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EP2416895B1 - Cleaning device for spray gun - Google Patents

Cleaning device for spray gun Download PDF

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Publication number
EP2416895B1
EP2416895B1 EP10718636.3A EP10718636A EP2416895B1 EP 2416895 B1 EP2416895 B1 EP 2416895B1 EP 10718636 A EP10718636 A EP 10718636A EP 2416895 B1 EP2416895 B1 EP 2416895B1
Authority
EP
European Patent Office
Prior art keywords
nozzle
cleaning device
fluid
outlet
cleaning
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP10718636.3A
Other languages
German (de)
French (fr)
Other versions
EP2416895A2 (en
Inventor
Patrick Saint
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fillon Technologies SAS
Original Assignee
Fillon Technologies SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from FR0901734A external-priority patent/FR2944220B1/en
Application filed by Fillon Technologies SAS filed Critical Fillon Technologies SAS
Priority to PL10718636T priority Critical patent/PL2416895T3/en
Priority to EP12164723.4A priority patent/EP2478972B1/en
Publication of EP2416895A2 publication Critical patent/EP2416895A2/en
Application granted granted Critical
Publication of EP2416895B1 publication Critical patent/EP2416895B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/006—Cabinets or cupboards specially adapted for cleaning articles by hand
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
    • B05B14/40—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths
    • B05B14/49—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths specially adapted for solvents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
    • B05B15/55—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
    • B05B7/2478—Gun with a container which, in normal use, is located above the gun
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
    • B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44D—PAINTING OR ARTISTIC DRAWING, NOT OTHERWISE PROVIDED FOR; PRESERVING PAINTINGS; SURFACE TREATMENT TO OBTAIN SPECIAL ARTISTIC SURFACE EFFECTS OR FINISHES
    • B44D3/00—Accessories or implements for use in connection with painting or artistic drawing, not otherwise provided for; Methods or devices for colour determination, selection, or synthesis, e.g. use of colour tables
    • B44D3/006—Devices for cleaning paint-applying hand tools after use
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/38—Details of the container body
    • B65D83/384—Details of the container body comprising an aerosol container disposed in an outer shell or in an external container
    • B65D83/386—Details of the container body comprising an aerosol container disposed in an outer shell or in an external container actuation occurring by moving the aerosol container relative to the outer shell or external container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/38—Details of the container body
    • B65D83/388—Details of the container body with means for suspending the aerosol container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/06—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane
    • B05B7/062—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet
    • B05B7/066—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet with an inner liquid outlet surrounded by at least one annular gas outlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
    • B05B7/0807—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets
    • B05B7/0815—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets with at least one gas jet intersecting a jet constituted by a liquid or a mixture containing a liquid for controlling the shape of the latter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
    • B05B7/2405—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant

Definitions

  • the present invention relates to a cleaning device for a spray gun.
  • Such cleaning machines are already known as illustrated by the patent FR-2903332 . These machines are currently being designed in the sense of reducing the number of operator operations, speed of cleaning, and simplification of the architecture of the machine. The objective is to allow an operator to be able, without disconnecting his gun from the cleaning device, to clean and then to dry the gun while simplifying the architecture of the device, in particular by limiting the length of the ducts and avoiding the passage of fluids of different types within the same conduit to facilitate subsequent cleaning of the device.
  • the patent GB-2,182,266 discloses a paint gun cleaning apparatus according to the preamble of claim 1 having a fluid supply head having a conduit for connection to the spray gun paint inlet, which can be supplied with liquid from the spray gun. cleaning or compressed air. To allow such a power supply, pumps are needed.
  • Gun cleaning facilities are also known through demand WO 2008/084327 and the patent US 2745418 . Again, such facilities are complex and require the presence of pumps, valves ...
  • An object of the present invention is therefore to provide an improved cleaning device whose design allows, with ducts of reduced length and dedicated to a single type of fluid, to carry out, for an operator, cleaning and then drying a gun without disconnecting the gun from said device.
  • Another object of the present invention is to provide a cleaning device of the aforementioned type whose design allows to minimize the stagnation of liquid fluid in the ducts of the cleaning device.
  • the subject of the invention is a cleaning device for a spray gun according to claim 1.
  • the fluid supply inlets are arranged in the immediate vicinity of the feed nozzle and that they are distinct, one serving for supplying cleaning fluid to the nozzle for cleaning the gun, the other to the supply of compressed air to the nozzle for drying said gun, the cleaning of the inlets and cleaning and drying ducts connectable to said inputs is facilitated and the length of said ducts reduced.
  • This arrangement makes it possible to dispense with a pump at the level of the cleaning device and to easily adapt the characteristics of the cleaning fluid to depending on the nature of the fluid to be sprayed.
  • the feed nozzle is mounted movably relative to the support frame in the direction of a connection or a spacing of the device of the evacuation means.
  • Such a device can thus be adapted to guns of variable characteristic.
  • each fluid supply inlet of the supply nozzle is an axial outlet with an axis parallel to the longitudinal axis of the duct of the supply nozzle.
  • This arrangement makes it possible to facilitate the flow of fluid into the nozzle and makes it possible to produce an axial fluid supply inlet in which the risks of stagnation of liquid are reduced or even zero.
  • the evacuation means of the cleaning device comprise at least one fluid receiving member intended to be connected at the inlet to the fluid outlet of the gun.
  • the supply nozzle and said receiving member are positioned relative to each other so as to be able to be connected at the same time respectively to said spray gun paint inlet and to the outlet of the spray gun .
  • the operator can, without disconnecting the gun from the cleaning device, proceed to the supply of cleaning fluid, the emptying and drying of the gun.
  • the output of the spray gun to be cleaned comprises at least one axial outlet of fluid to be sprayed and at least one, preferably a plurality of, preferably radial, outlet (s). (s), called (s) output (s) of gas under pressure, serving for example to adjust the shape of the fluid flow from the axial outlet
  • said receiving member comprises on the one hand at least one receiving nozzle, preferably of cylindro-conical shape, connected, at the outlet, to means for collecting the flow of sprayed and connectable fluid, at the inlet, with the axial outlet of the fluid stream to be sprayed from the gun, on the other hand at least one inlet gas outlet duct connectable with the at least one gas outlet of said gun and opening out in an area, called evacuation zone gases distinct from the collection means of the sprayed fluid stream.
  • said receiving member comprises, in addition to the receiving nozzle intended to cooperate with the axial outlet of the spray gun, a ring surrounding said nozzle, the inlet of the at least one gas discharge duct being provided between the ring and receiving nozzle.
  • annular seal with a convex outer circumferential surface is housed inside said ring.
  • the seal housed inside the ring, is loaded by a spring and is biased in the bearing position against an inner peripheral circumferential shoulder of the ring.
  • the gas evacuation zone is formed by the ambient air surrounding said cleaning device so that the end of the exhaust duct separate from the collection means of the fluid flow opens out in the open air.
  • the gas evacuation zone being formed by the ambient air surrounding the cleaning device, the support frame comprises, in its so-called rear zone opposite its front opening, at least one, preferably a plurality of openings corresponding to the outlet. in the open air of the exhaust ducts or gases.
  • the user is not hindered by the vapors of the cleaning products and the volume of cleaning fluid to be treated is reduced.
  • the cleaning device which is the subject of the invention, comprises a support frame delimiting a cleaning volume 22, such as a enclosure, adapted to receive at least partially a spray gun to be cleaned.
  • This support frame 2 carries a fluid supply head 3 comprising at least one feed nozzle 5 intended to be connected to the paint inlet 27 of the spray gun to be cleaned.
  • This cleaning device also comprises means 4 for discharging at least a portion of the fluid from the fluid supply head 3.
  • the cleaning device is for cleaning spray guns.
  • a spray gun 26 may be placed partially in the volume 22.
  • the spray gun 26 comprises in particular an inlet 27 for spraying fluid, said entry 27 of paint, an internal conduit and a fluid outlet 28, the internal conduit s extending between the inlet 27 and the fluid outlet 28.
  • Such a gun also has an air inlet 31 connectable to a source of compressed air supply.
  • This inlet 31 of air allows, in particular, to help the fluid to flow from the paint inlet 27 to the fluid outlet 28 and to be ejected from said gun during actuation of the gun trigger.
  • This air inlet 31 also serves to supply a gas outlet 30 of the gun for adjusting the shape of the fluid flow.
  • the outlet 28 of the spray gun to be cleaned comprises at least one axial outlet 29 of spray fluid formed of a gas-liquid mixture, and at least one, preferably a plurality of outlets 30, preferably radial said pressurized gas outlets for adjusting the shape of the fluid flow from the axial outlet.
  • the gas outlets 30 are disposed around the axial outlet 29.
  • a paint bucket (not shown) is connected to the paint inlet 27.
  • the paint passes into the inner duct and exits through the outlet 28, in particular through the axial outlet 29 of spray fluid from the outlet 28.
  • the spray gun 26 is connected to the cleaning device 1, as shown in figure 5 . More specifically, the paint bucket is removed and the paint inlet 27 is connected to the feed nozzle 3 of the feed head 3.
  • the feed head 3 can be controlled to circulate cleaner.
  • the cleaning device 1 comprises at least two independent fluid supply inlets 6, 7 of the supply nozzle 5.
  • Said inlets 6, 7 each have a separate outlet 6A, 7A in the duct of said supply nozzle, said inlets 6, 7 being connectable to one, to a source of cleaning fluid, the other 7 to a source of compressed air.
  • the cleaning fluid feeds the inlet nozzle 6 via the inlet 6 and passes successively through the inlet 27 of FIG. paint, the inner conduit, the outlet 28 of the gun, in particular by the axial outlet 29 of the outlet 28.
  • compressed air supplies, through the inlet 7, the nozzle 5 and passes successively through the paint inlet 27, the inner conduit, the outlet 28 of the gun, in particular the axial outlet 29 of the outlet 28 of the gun. This drying makes it possible to evacuate the cleaning product remaining in the internal conduit of the gun between inlet 27 and outlet 28 of said gun.
  • the frame 2 has the shape of a column provided with a front opening through which the gun is introduced inside the column in the cleaning volume 22.
  • This cleaning volume 22 is delimited at least by the peripheral wall of the frame.
  • the feed head 3 is disposed at or near the top of the frame and therefore extends substantially above the pistol in the introduced state of the gun in the cleaning volume 22.
  • the cleaning device also comprises means 4 for evacuating at least a portion of the fluid coming from the fluid supply head 3 cleaning.
  • the means 4 for discharging the cleaning device comprise at least one fluid receiving member 14 intended to be connected at the inlet to the fluid outlet of the gun 26.
  • the peripheral wall of the frame door on its side facing the interior of the frame, the receiving member 14 which is housed inside the volume 22 cleaning. This receiving member 14 extends substantially opposite the front opening of the frame.
  • the supply nozzle and said receiving member 14 are positioned relative to one another so as to be able to be connected at the same time respectively to said paint spray gun entry port 27 and at the outlet 28 of the spray gun.
  • said receiving member 14 comprises at least one receiving nozzle 15, preferably of cylindro-conical shape, said receiving nozzle 15 being connected, at the outlet, to means 16 for collecting the flow of sprayed and connectable fluid. at the inlet, with the axial outlet 29 of spray fluid from the gun.
  • This input connection makes it possible to orient the flow of fluid towards said collection means 16.
  • Said receiving nozzle 15 is, in the state connected with said axial outlet 29, able to prevent any action of the gas coming from the gas outlets 30 on the fluid flow coming from the axial outlet.
  • the receiving member 14 comprises, in addition to the at least one receiving nozzle 15 connected, at the outlet, to means 16 for collecting the flow of sprayed and connectable fluid, at the inlet, with the axial outlet 29 of the flow of fluid to be sprayed. of the gun, at least one gas discharge duct 17 connectable at the inlet with the at least one gas outlet 30 of said gun and opening out in an area called gas evacuation zone distinct from the means 16 for collecting the flow of gas. sprayed fluid to evacuate the gun's gases into an evacuation zone.
  • This receiving member 14 also comprises, in addition to the receiving nozzle 15 intended to cooperate with the axial outlet 29 of the spray gun and the discharge pipe 17, a ring 18 surrounding said nozzle 15, in particular the frustoconical part of said nozzle 15, the inlet of the at least one evacuation pipe 17 being formed between ring 18 and receiving nozzle 15.
  • An annular seal 19 having a convex outer circumferential surface is housed inside said ring 18.
  • Said at least one gas evacuation conduit 17 has an inlet formed in the volume formed by the space left free between the ring 18 and the receiving nozzle 15, in particular the frustoconical portion of said nozzle 15, and an opposite end or outlet that opens into the gas evacuation zone.
  • the gas evacuation zone is formed by the ambient air surrounding the cleaning device so that the at least one gas evacuation duct opens in the open air.
  • the frame 2 support comprises, in its so-called rear zone, opposite to its front opening, at least one, preferably a plurality of openings corresponding to the outlet to the open air of the exhaust ducts or gases .
  • the seal 19, housed inside the ring 18, is loaded by a spring 20 and is biased into a bearing position against an inner peripheral circumferential shoulder 21 of the ring 18.
  • this seal 19 surrounds the gun barrel with sealing contact and prevents the air exiting from the end of the barrel of the gun by the gas outlets 30 to escape out of the volume delimited by the ring 18, the nozzle 15 and said seal 19 and forming the inlet of the at least one discharge conduit 17.
  • the convex outer peripheral surface of the gasket 19 allows said gasket to be swiveled inside the housing formed by the ring when the gun barrel is introduced inside the gasket until the end of the gun barrel comes into position.
  • this nozzle end is preferably made of an elastically deformable material.
  • the radial outlet 30 gun barrel gas flows into the volume extending between the ring 18, the seal 19 and the nozzle 15 receiving and wherein is formed the inlet of the conduit 17 gas discharge.
  • the seal 19 seals with the barrel of the gun, the clean air is forced to evacuate through the conduit 17 for evacuation of gas and is brought into the atmosphere so that the volume of fluid to be treated collected in the collection means is less than in the state of the art.
  • said receiving member 14 comprises a plurality of gas discharge ducts 17, said ducts being disposed equidistant from the axis of the receiving nozzle 15.
  • the entrances of the gas discharge ducts 17 in the space between the ring 18 and the receiving nozzle 15 are arranged on a center circle located on the central axis of the receiving nozzle. This increases the possibilities of evacuation of gases in the atmosphere.
  • the receiving nozzle has a cylindro-conical shape. This makes it possible to connect the receiving nozzle 15 to guns having paint outlets of different diameters.
  • the cleaning product leaves the feed head 3 and passes successively through the feed nozzle 5, the paint inlet 27, the internal pipe, the outlet 28 of the gun, the receiving member 14 then arrives in the collection means 16.
  • the cleaning product thus flows in a closed circuit from the feed head 3 to the collection means 16.
  • the inlet head 3 can be controlled to pass air under pressure in the closed circuit mentioned above to dry the spray gun and more specifically to evacuate the cleaning product remaining in the internal conduit.
  • the means 16 for collecting the cleaning fluid to be treated are here formed of a duct connected to the outlet of the receiving nozzle 15 and a tank supplied with cleaning fluid to be treated by said duct.
  • This reservoir is a tank housed in a generally removable manner in the base of the support frame to be emptied.
  • the device further comprises fluid evacuation means 4 disposed in the lower part of the cleaning volume 22 of the support frame.
  • this cleaning volume 22 is delimited at least by the peripheral wall of the frame and by an inclined lower wall delimiting a bowl inside the frame to guide a flow to a conduit 23 drain which opens into the conduit d supply of the reservoir of the collection means.
  • the bottom wall and the drain duct allow recovery to the product reservoir. cleaning to treat.
  • the feed nozzle 5 is mounted movably relative to the support frame 2 in the direction of an approximation or a spacing of the means 4 for discharging the device.
  • the feed nozzle 5 is driven up and down between a high position remote from the evacuation means 4 and a low position close to said evacuation means 4, said lower position being an adjustable position. function at least of the dimensional characteristics of the spray gun to be cleaned.
  • adjusting the level of the nozzle 5 supply allows to vary its relative position relative to the receiving member 14 and therefore to adapt to guns of different characteristics as illustrated the figures 5 and 6 , said guns being able to differ in the dimensions of the paint inlet, the dimensions of the outlet, the distance and relative orientation between the paint entry and the gun exit.
  • the feed head 3 is in turn represented in greater detail in the figures 1 and 2 .
  • the supply nozzle 5 is coupled to the frame 2 of the cleaning device 1 at least by a nozzle holder 8 forming, in cooperation with the nozzle 5, the feed head 3 of the cleaning device.
  • the nozzle holder 8 has the shape of a vertical axis tubular body equipped at its lower end with the feed nozzle and open at its upper end to form an opening for introducing a source of fluid. cleaning device, such as an aerosol container, inside said nozzle holder 8.
  • the aerosol container 24 is adapted to be introduced by its diffuser 25, that is to say, upside down, inside. of the nozzle holder 8 until the diffuser 25 comes to fit at least partially inside the inlet 6 for supplying cleaning fluid to the feed nozzle 5 opening into the conduit of the nozzle 5 power supply.
  • This inlet 6 is formed by a stepped through duct formed in the bottom 9 of the constituent body of the nozzle holder.
  • This nozzle holder 8 comprises, in addition to this through conduit housing of the aerosol container diffuser 25, communicating with the supply nozzle 5, an air inlet circuit portion connectable at one end to a power supply source. compressed air and opening at its opposite end in said feed nozzle forming an air inlet 7 in said nozzle separate from the cleaning fluid supply inlet 6.
  • Outlet 6A, 7A of each inlet 6, 7 for supplying fluid to the supply nozzle 5 is an axial outlet with an axis parallel to the longitudinal axis of the duct 5 of the supply nozzle.
  • the air inlets 7 and the cleaning fluid inlet 6 in the supply nozzle 5 are thus axial inlets disposed on the large base side of the cone of the frustoconical feed nozzle 5 so as to facilitate the flow of the fluids to the inside the nozzle.
  • the nozzle holder 8 is mounted on said frame, slidably movable in a direction parallel to the longitudinal axis of the tubular body constituting the nozzle holder.
  • nozzle holder 8 and frame 2 are equipped with means such as rails, slides, rolling members, pads or others for sliding mounting of the nozzle holder on said frame.
  • the nozzle holder comprises a cylindrical wall which defines an upwardly open housing for the introduction of the aerosol container into said housing.
  • the bottom of the housing is closed by a bottom wall 9 which has a through duct shouldered preferably central.
  • This conduit opens into the channel of the feed nozzle 5 and is substantially aligned with it.
  • This conduit forms the inlet 6 for supplying cleaning fluid to the nozzle 5.
  • the air inlet 7 is also formed in the bottom wall of the nozzle holder 8 and opens into the feed nozzle via axial passages.
  • This air inlet is formed of a radial air inlet duct to the nozzle holder and connected to a source 33 of compressed air.
  • This conduit opens into an annular volume disposed around the inlet 6 for supplying cleaning fluid to the nozzle.
  • This annular volume is provided with axial passages aligned with the conduit of the feed nozzle.
  • These axial passages form the outlet 7A of the air inlet 7 in the nozzle 5.
  • the supply head 3 also comprises radial handles 13, one of which is shown, which are fixed to the cylindrical wall of the carrier. nozzle 8 and allow the displacement of the feed head 3. It can be seen that the feed nozzle 5 has a frustoconical shape. This makes it possible to connect the feed nozzle to guns having paint entries of different diameters.
  • An aerosol container 24 is arranged in the housing formed in the nozzle holder 8, upside down.
  • the aerosol container 24 comprises a bottom, possibly a dip tube and a diffuser 25. Cleaner and propellant under pressure are contained in the container 24.
  • the diffuser 25 is arranged in abutment in the conduit through the bottom wall of the nozzle holder.
  • the aerosol container 24 can slide in the housing. Thus, if a user presses on the bottom of the container 24, the container 24 approaches the diffuser 25, which causes the opening of a valve (not shown) of the aerosol container 24. The cleaning product contained in the container 25 is then expelled and passes into the diffuser 25, the inlet 6 and the feed nozzle 5.
  • the aerosol container 24 can be easily placed in the housing, and easily replaced when empty. In addition, a mixture of cleaner and propellant is expelled. Thus, by choosing the cleaning product and the shape of the diffuser appropriately, it is possible to expel the cleaning product in the form of foam and to improve the cleaning ability.
  • the feed head 3 can have a simple structure so that it is not necessary to provide a pump or a valve for cleaner.
  • the cleaning device could comprise a cleaner pump or be connected to the dispensing water as a cleaning product.
  • the gun is positioned on the receiving member.
  • the feed head 3 and thus the nozzle 5 are lowered to a position of connection with the paint inlet of the gun.
  • the aerosol container is pressed until the gun inlet is filled.
  • the gun is drained by pressing the gun trigger. Bearing operations are repeated on the aerosol container and drain as many times as necessary.
  • the gun is dried by sending compressed air through the paint inlet of said gun. We go back the head 3 and the associated nozzle 5.
  • the gun is extracted from the cleaning zone 22.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Nozzles (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)

Description

La présente invention concerne un dispositif de nettoyage pour pistolet de pulvérisation.The present invention relates to a cleaning device for a spray gun.

De telles machines de nettoyage sont d'ores et déjà connues comme l'illustre le brevet FR-2.903.332 . On tend actuellement à concevoir ces machines dans le sens d'une réduction du nombre de manipulations de l'opérateur, d'une rapidité de nettoyage, et d'une simplification de l'architecture de la machine. L'objectif est de permettre à un opérateur de pouvoir, sans déconnecter son pistolet du dispositif de nettoyage, procéder au nettoyage puis au séchage du pistolet tout en simplifiant l'architecture du dispositif, en particulier en limitant la longueur des conduits et en évitant le passage de fluides de nature différente à l'intérieur d'un même conduit en vue de faciliter un nettoyage ultérieur du dispositif.Such cleaning machines are already known as illustrated by the patent FR-2903332 . These machines are currently being designed in the sense of reducing the number of operator operations, speed of cleaning, and simplification of the architecture of the machine. The objective is to allow an operator to be able, without disconnecting his gun from the cleaning device, to clean and then to dry the gun while simplifying the architecture of the device, in particular by limiting the length of the ducts and avoiding the passage of fluids of different types within the same conduit to facilitate subsequent cleaning of the device.

Le brevet GB-2.182.266 décrit une installation de nettoyage pour pistolet de peinture selon le preambule de la revendication 1 comportant une tête d'alimentation en fluide comportant un conduit destiné à être relié à l'entrée de peinture du pistolet de pulvérisation, ce conduit pouvant être alimenté en liquide de nettoyage ou en air comprimé. Pour permettre une telle alimentation, des pompes sont nécessaires.The patent GB-2,182,266 discloses a paint gun cleaning apparatus according to the preamble of claim 1 having a fluid supply head having a conduit for connection to the spray gun paint inlet, which can be supplied with liquid from the spray gun. cleaning or compressed air. To allow such a power supply, pumps are needed.

Des installations de nettoyage du pistolet sont également connues à travers la demande WO 2008/084327 et le brevet US-2.745.418 . A nouveau, de telles installations sont complexes et nécessitent la présence de pompes, de valves...Gun cleaning facilities are also known through demand WO 2008/084327 and the patent US 2745418 . Again, such facilities are complex and require the presence of pumps, valves ...

Un but de la présente invention est donc de proposer un dispositif de nettoyage amélioré dont la conception permet, avec des conduits de longueur réduite et dédiés à un seul type de fluide, de procéder, pour un opérateur, au nettoyage puis au séchage d'un pistolet sans déconnexion du pistolet dudit dispositif.An object of the present invention is therefore to provide an improved cleaning device whose design allows, with ducts of reduced length and dedicated to a single type of fluid, to carry out, for an operator, cleaning and then drying a gun without disconnecting the gun from said device.

Un autre but de la présente invention est de proposer un dispositif de nettoyage du type précité dont la conception permet de limiter au maximum la stagnation de fluide liquide dans les conduits du dispositif de nettoyage.Another object of the present invention is to provide a cleaning device of the aforementioned type whose design allows to minimize the stagnation of liquid fluid in the ducts of the cleaning device.

A cet effet, l'invention a pour objet un dispositif de nettoyage pour pistolet de pulvérisation selon la revendication 1.For this purpose, the subject of the invention is a cleaning device for a spray gun according to claim 1.

Grâce au fait que les entrées d'alimentation en fluide sont disposées au voisinage immédiat de la buse d'alimentation et qu'elles sont distinctes, l'une servant à l'alimentation en fluide de nettoyage de la buse pour le nettoyage du pistolet, l'autre à l'alimentation en air comprimé de la buse pour le séchage dudit pistolet, le nettoyage des entrées et des conduits de nettoyage et de séchage raccordables auxdites entrées est facilité et la longueur desdits conduits réduite.Due to the fact that the fluid supply inlets are arranged in the immediate vicinity of the feed nozzle and that they are distinct, one serving for supplying cleaning fluid to the nozzle for cleaning the gun, the other to the supply of compressed air to the nozzle for drying said gun, the cleaning of the inlets and cleaning and drying ducts connectable to said inputs is facilitated and the length of said ducts reduced.

Cette disposition permet de s'affranchir d'une pompe au niveau du dispositif de nettoyage et d'adapter aisément les caractéristiques du fluide de nettoyage en fonction de la nature du fluide à pulvériser.This arrangement makes it possible to dispense with a pump at the level of the cleaning device and to easily adapt the characteristics of the cleaning fluid to depending on the nature of the fluid to be sprayed.

De préférence, la buse d'alimentation est montée mobile par rapport au bâti support dans le sens d'un rapprochement ou d'un écartement des moyens d'évacuation du dispositif.Preferably, the feed nozzle is mounted movably relative to the support frame in the direction of a connection or a spacing of the device of the evacuation means.

Un tel dispositif peut ainsi s'adapter à des pistolets de caractéristique variable.Such a device can thus be adapted to guns of variable characteristic.

De préférence, le débouché de chaque entrée d'alimentation en fluide de la buse d'alimentation est un débouché axial d'axe parallèle à l'axe longitudinal du conduit de la buse d'alimentation.Preferably, the outlet of each fluid supply inlet of the supply nozzle is an axial outlet with an axis parallel to the longitudinal axis of the duct of the supply nozzle.

Cette disposition permet de faciliter l'écoulement du fluide dans la buse et permet de réaliser une entrée axiale d'alimentation en fluide dans laquelle les risques de stagnation de liquide sont réduits voire nuls.This arrangement makes it possible to facilitate the flow of fluid into the nozzle and makes it possible to produce an axial fluid supply inlet in which the risks of stagnation of liquid are reduced or even zero.

De préférence encore, les moyens d'évacuation du dispositif de nettoyage comprennent au moins un organe de réception de fluide destiné à être relié en entrée à la sortie de fluide du pistolet. La buse d'alimentation et ledit organe de réception sont positionnés l'un par rapport à l'autre de manière à être aptes à être reliés en même temps respectivement à ladite entrée de peinture du pistolet de pulvérisation et à la sortie du pistolet de pulvérisation.More preferably, the evacuation means of the cleaning device comprise at least one fluid receiving member intended to be connected at the inlet to the fluid outlet of the gun. The supply nozzle and said receiving member are positioned relative to each other so as to be able to be connected at the same time respectively to said spray gun paint inlet and to the outlet of the spray gun .

Grâce à cette disposition, l'opérateur peut, sans déconnexion du pistolet du dispositif de nettoyage, procéder à l'alimentation en fluide de nettoyage, à la vidange et au séchage de son pistolet.With this arrangement, the operator can, without disconnecting the gun from the cleaning device, proceed to the supply of cleaning fluid, the emptying and drying of the gun.

Selon une forme de réalisation préférée de l'invention, dans laquelle la sortie du pistolet de pulvérisation à nettoyer comprend au moins une sortie axiale de fluide à pulvériser et au moins une, de préférence une pluralité de, sortie(s), de préférence radiale(s), dite(s) sortie(s) de gaz sous pression, servant par exemple à régler la forme du flux de fluide issu de la sortie axiale, caractérisé en ce que ledit organe de réception comprend d'une part au moins une buse de réception, de préférence de forme cylindro-conique, raccordée, en sortie, à des moyens de collecte du flux de fluide pulvérisé et raccordable, en entrée, avec la sortie axiale du flux de fluide à pulvériser du pistolet, d'autre part au moins un conduit d'évacuation de gaz raccordable en entrée avec la au moins une sortie de gaz dudit pistolet et débouchant en sortie dans une zone, dite zone d'évacuation des gaz distincte des moyens de collecte du flux de fluide pulvérisé.According to a preferred embodiment of the invention, in which the output of the spray gun to be cleaned comprises at least one axial outlet of fluid to be sprayed and at least one, preferably a plurality of, preferably radial, outlet (s). (s), called (s) output (s) of gas under pressure, serving for example to adjust the shape of the fluid flow from the axial outlet, characterized in that said receiving member comprises on the one hand at least one receiving nozzle, preferably of cylindro-conical shape, connected, at the outlet, to means for collecting the flow of sprayed and connectable fluid, at the inlet, with the axial outlet of the fluid stream to be sprayed from the gun, on the other hand at least one inlet gas outlet duct connectable with the at least one gas outlet of said gun and opening out in an area, called evacuation zone gases distinct from the collection means of the sprayed fluid stream.

De préférence, ledit organe de réception comprend, outre la buse de réception destinée à coopérer avec la sortie axiale du pistolet de pulvérisation, une bague entourant ladite buse, l'entrée du au moins un conduit d'évacuation des gaz étant ménagée entre bague et buse de réception.Preferably, said receiving member comprises, in addition to the receiving nozzle intended to cooperate with the axial outlet of the spray gun, a ring surrounding said nozzle, the inlet of the at least one gas discharge duct being provided between the ring and receiving nozzle.

En outre, généralement, un joint d'étanchéité annulaire à surface périphérique externe convexe est logé à l'intérieur de ladite bague.In addition, generally, an annular seal with a convex outer circumferential surface is housed inside said ring.

De préférence, le joint, logé à l'intérieur de la bague, est chargé par un ressort et est rappelé en position d'appui contre un épaulement circonférentiel périphérique interne de la bague. La zone d'évacuation des gaz est formée par l'air ambiant entourant ledit dispositif de nettoyage de sorte que l'extrémité du conduit d'évacuation distincte des moyens de collecte du flux de fluide débouche à l'air libre. La zone d'évacuation des gaz étant formée par l'air ambiant entourant le dispositif de nettoyage, le bâti support comporte, dans sa zone dite arrière opposée à son ouverture frontale, au moins une, de préférence une pluralité d'ouvertures correspondant au débouché à l'air libre du ou des conduits d'évacuation des gaz.Preferably, the seal, housed inside the ring, is loaded by a spring and is biased in the bearing position against an inner peripheral circumferential shoulder of the ring. The gas evacuation zone is formed by the ambient air surrounding said cleaning device so that the end of the exhaust duct separate from the collection means of the fluid flow opens out in the open air. The gas evacuation zone being formed by the ambient air surrounding the cleaning device, the support frame comprises, in its so-called rear zone opposite its front opening, at least one, preferably a plurality of openings corresponding to the outlet. in the open air of the exhaust ducts or gases.

Dans ce mode de réalisation, l'utilisateur n'est pas gêné par les vapeurs des produits de nettoyage et le volume de fluide de nettoyage à traiter est réduit.In this embodiment, the user is not hindered by the vapors of the cleaning products and the volume of cleaning fluid to be treated is reduced.

L'invention sera bien comprise à la lecture de la description suivante d'exemples de réalisation, en référence aux dessins annexés dans lesquels :

  • la figure 1 représente une vue partielle en coupe de la tête d'alimentation en fluide prise au niveau de la buse d'alimentation, la source de nettoyage étant formée par un récipient aérosol ;
  • la figure 2 représente une vue en coupe de la tête d'alimentation, la source de nettoyage étant formée par un récipient aérosol ;
  • la figure 3 représente une vue schématique en coupe de la tête d'alimentation et une vue partielle du bâti à l'état raccordé de la buse d'alimentation de la tête à l'entrée de peinture du pistolet de pulvérisation;
  • la figure 4 représente une vue schématique partielle en coupe du dispositif de nettoyage ;
  • la figure 5 représente une vue schématique partielle en coupe du dispositif de nettoyage à l'état raccordé des buses du dispositif aux entrée et sortie d'un pistolet de pulvérisation ;
  • la figure 6 représente une vue similaire à la figure 5 pour un pistolet aux caractéristiques dimensionnelles différentes ;
  • la figure 7 représente une vue de détail en coupe de l'organe de réception ;
  • la figure 8 représente une vue partielle de détail en coupe de l'organe de réception à l'état raccordé à la sortie d'un pistolet.
The invention will be better understood on reading the following description exemplary embodiments, with reference to the accompanying drawings in which:
  • the figure 1 is a partial sectional view of the fluid supply head taken at the feed nozzle, the cleaning source being formed by an aerosol container;
  • the figure 2 represents a sectional view of the feed head, the cleaning source being formed by an aerosol container;
  • the figure 3 is a schematic sectional view of the feed head and a partial view of the frame in the connected state of the feed nozzle of the head to the spray gun paint inlet;
  • the figure 4 is a partial schematic sectional view of the cleaning device;
  • the figure 5 is a partial diagrammatic sectional view of the cleaning device in the connected state of the device nozzles at the inlet and outlet of a spray gun;
  • the figure 6 represents a view similar to the figure 5 for a gun with different dimensional characteristics;
  • the figure 7 represents a detailed sectional view of the receiving member;
  • the figure 8 is a partial sectional detail view of the receiving member in the state connected to the output of a gun.

Comme mentionné ci-dessus, le dispositif de nettoyage, objet de l'invention, comprend un bâti 2 support délimitant un volume 22 de nettoyage, tel qu'une enceinte, apte à recevoir au moins partiellement un pistolet de pulvérisation à nettoyer. Ce bâti 2 support porte une tête 3 d'alimentation en fluide comportant au moins une buse 5 d'alimentation destinée à être reliée à l'entrée 27 de peinture du pistolet de pulvérisation à nettoyer. Ce dispositif de nettoyage comporte encore des moyens 4 d'évacuation d'au moins une partie du fluide issu de la tête 3 d'alimentation en fluide.As mentioned above, the cleaning device, which is the subject of the invention, comprises a support frame delimiting a cleaning volume 22, such as a enclosure, adapted to receive at least partially a spray gun to be cleaned. This support frame 2 carries a fluid supply head 3 comprising at least one feed nozzle 5 intended to be connected to the paint inlet 27 of the spray gun to be cleaned. This cleaning device also comprises means 4 for discharging at least a portion of the fluid from the fluid supply head 3.

Le dispositif de nettoyage est destiné à nettoyer des pistolets de pulvérisation. Comme le montre la figure 5, un pistolet 26 de pulvérisation peut être placé partiellement dans le volume 22. Le pistolet 26 de pulvérisation comprend notamment une entrée 27 de fluide à pulvériser, dite entrée 27 de peinture, un conduit interne et une sortie 28 de fluide, le conduit interne s'étendant entre l'entrée 27 et la sortie 28 de fluide. Un tel pistolet comporte encore une entrée 31 d'air raccordable à une source d'alimentation en air comprimé. Cette entrée 31 d'air permet, notamment, d'aider le fluide à circuler depuis l'entrée 27 de peinture vers la sortie 28 de fluide et à être éjecté hors dudit pistolet lors d'un actionnement de la gâchette du pistolet. Cette entrée 31 d'air permet également d'alimenter une sortie 30 de gaz du pistolet servant à régler la forme du flux de fluide. En effet, généralement, la sortie 28 du pistolet de pulvérisation à nettoyer comprend au moins une sortie 29 axiale de fluide à pulvériser formée d'un mélange gaz-liquide, et au moins une, de préférence une pluralité de sorties 30, de préférence radiales, dites sorties de gaz sous pression servant à régler la forme du flux de fluide issu de la sortie axiale.The cleaning device is for cleaning spray guns. As shown in figure 5 a spray gun 26 may be placed partially in the volume 22. The spray gun 26 comprises in particular an inlet 27 for spraying fluid, said entry 27 of paint, an internal conduit and a fluid outlet 28, the internal conduit s extending between the inlet 27 and the fluid outlet 28. Such a gun also has an air inlet 31 connectable to a source of compressed air supply. This inlet 31 of air allows, in particular, to help the fluid to flow from the paint inlet 27 to the fluid outlet 28 and to be ejected from said gun during actuation of the gun trigger. This air inlet 31 also serves to supply a gas outlet 30 of the gun for adjusting the shape of the fluid flow. Indeed, generally, the outlet 28 of the spray gun to be cleaned comprises at least one axial outlet 29 of spray fluid formed of a gas-liquid mixture, and at least one, preferably a plurality of outlets 30, preferably radial said pressurized gas outlets for adjusting the shape of the fluid flow from the axial outlet.

Les sorties 30 de gaz sont disposées autour de la sortie 29 axiale. Lorsque le pistolet 26 de pulvérisation est utilisé pour peindre, un godet de peinture (non représenté) est relié à l'entrée 27 de peinture. La peinture passe dans le conduit interne et sort par la sortie 28, en particulier par la sortie 29 axiale de fluide à pulvériser de la sortie 28. Lorsqu'on souhaite le nettoyer, le pistolet 26 de pulvérisation est relié au dispositif de nettoyage 1, comme le montre la figure 5. Plus précisément, le godet de peinture est retiré et l'entrée 27 de peinture est reliée à la buse 5 d'alimentation de la tête 3 d'alimentation.The gas outlets 30 are disposed around the axial outlet 29. When the spray gun 26 is used to paint, a paint bucket (not shown) is connected to the paint inlet 27. The paint passes into the inner duct and exits through the outlet 28, in particular through the axial outlet 29 of spray fluid from the outlet 28. When it is desired to clean it, the spray gun 26 is connected to the cleaning device 1, as shown in figure 5 . More specifically, the paint bucket is removed and the paint inlet 27 is connected to the feed nozzle 3 of the feed head 3.

Ensuite, la tête 3 d'alimentation peut être commandée pour faire circuler du produit nettoyant.Then, the feed head 3 can be controlled to circulate cleaner.

De manière caractéristique à l'invention, le dispositif 1 de nettoyage comporte au moins deux entrées 6, 7 indépendantes d'alimentation en fluide de la buse 5 d'alimentation. Lesdites entrées 6, 7 présentent chacune un débouché 6A, 7A distinct dans le conduit de ladite buse 5 d'alimentation, lesdites entrées 6, 7 étant raccordables l'une 6, à une source de fluide de nettoyage, l'autre 7 à une source d'air comprimé.In characteristic manner to the invention, the cleaning device 1 comprises at least two independent fluid supply inlets 6, 7 of the supply nozzle 5. Said inlets 6, 7 each have a separate outlet 6A, 7A in the duct of said supply nozzle, said inlets 6, 7 being connectable to one, to a source of cleaning fluid, the other 7 to a source of compressed air.

Ainsi, à l'état raccordé des entrées 6, 7 à leur source de fluide respective, pendant la phase de nettoyage, le fluide de nettoyage alimente par l'entrée 6 la buse 5 d'alimentation et passe successivement par l'entrée 27 de peinture, le conduit interne, la sortie 28 du pistolet, en particulier par la sortie 29 axiale de la sortie 28. Pendant la phase de séchage, de l'air comprimé alimente, par l'entrée 7, la buse 5 d'alimentation et passe successivement par l'entrée 27 de peinture, le conduit interne, la sortie 28 du pistolet, en particulier la sortie 29 axiale de la sortie 28 du pistolet. Ce séchage permet d'évacuer le produit de nettoyage restant dans le conduit interne du pistolet entre entrée 27 et sortie 28 dudit pistolet.Thus, in the connected state of the inlets 6, 7 at their respective fluid source, during the cleaning phase, the cleaning fluid feeds the inlet nozzle 6 via the inlet 6 and passes successively through the inlet 27 of FIG. paint, the inner conduit, the outlet 28 of the gun, in particular by the axial outlet 29 of the outlet 28. During the drying phase, compressed air supplies, through the inlet 7, the nozzle 5 and passes successively through the paint inlet 27, the inner conduit, the outlet 28 of the gun, in particular the axial outlet 29 of the outlet 28 of the gun. This drying makes it possible to evacuate the cleaning product remaining in the internal conduit of the gun between inlet 27 and outlet 28 of said gun.

Dans l'exemple représenté, le bâti 2 affecte la forme d'une colonne munie d'une ouverture frontale à travers laquelle le pistolet est introduit à l'intérieur de la colonne dans le volume 22 de nettoyage. Ce volume 22 de nettoyage est délimité au moins par la paroi périphérique du bâti. La tête 3 d'alimentation est disposée à, ou au voisinage du sommet du bâti et s'étend donc essentiellement au-dessus du pistolet à l'état introduit du pistolet dans le volume 22 de nettoyage.In the example shown, the frame 2 has the shape of a column provided with a front opening through which the gun is introduced inside the column in the cleaning volume 22. This cleaning volume 22 is delimited at least by the peripheral wall of the frame. The feed head 3 is disposed at or near the top of the frame and therefore extends substantially above the pistol in the introduced state of the gun in the cleaning volume 22.

Le dispositif de nettoyage comporte encore des moyens 4 d'évacuation d'au moins une partie du fluide issu de la tête 3 d'alimentation en fluide de nettoyage. Dans les exemples représentés, les moyens 4 d'évacuation du dispositif de nettoyage comprennent au moins un organe 14 de réception de fluide destiné à être relié en entrée à la sortie 28 de fluide du pistolet 26. A cet effet, la paroi périphérique du bâti porte, sur sa face tournée vers l'intérieur du bâti, l'organe 14 de réception qui est donc logé à l'intérieur du volume 22 de nettoyage. Cet organe 14 de réception s'étend sensiblement en regard de l'ouverture frontale du bâti.The cleaning device also comprises means 4 for evacuating at least a portion of the fluid coming from the fluid supply head 3 cleaning. In the examples shown, the means 4 for discharging the cleaning device comprise at least one fluid receiving member 14 intended to be connected at the inlet to the fluid outlet of the gun 26. For this purpose, the peripheral wall of the frame door, on its side facing the interior of the frame, the receiving member 14 which is housed inside the volume 22 cleaning. This receiving member 14 extends substantially opposite the front opening of the frame.

De préférence, la buse 5 d'alimentation et ledit organe 14 de réception sont positionnés l'un par rapport à l'autre de manière à être aptes à être reliés en même temps respectivement à ladite entrée 27 de peinture du pistolet 26 de pulvérisation et à la sortie 28 du pistolet de pulvérisation.Preferably, the supply nozzle and said receiving member 14 are positioned relative to one another so as to be able to be connected at the same time respectively to said paint spray gun entry port 27 and at the outlet 28 of the spray gun.

De préférence encore, ledit organe 14 de réception comprend au moins une buse 15 de réception, de préférence de forme cylindro-conique, ladite buse 15 de réception étant raccordée, en sortie, à des moyens 16 de collecte du flux de fluide pulvérisé et raccordable, en entrée, avec la sortie 29 axiale de fluide à pulvériser du pistolet. Ce raccordement en entrée permet d'orienter le flux de fluide en direction desdits moyens 16 de collecte. Ladite buse 15 de réception est, à l'état raccordé avec ladite sortie 29 axiale, apte à empêcher toute action du gaz issu des sorties 30 de gaz sur le flux de fluide issu de la sortie axiale.More preferably, said receiving member 14 comprises at least one receiving nozzle 15, preferably of cylindro-conical shape, said receiving nozzle 15 being connected, at the outlet, to means 16 for collecting the flow of sprayed and connectable fluid. at the inlet, with the axial outlet 29 of spray fluid from the gun. This input connection makes it possible to orient the flow of fluid towards said collection means 16. Said receiving nozzle 15 is, in the state connected with said axial outlet 29, able to prevent any action of the gas coming from the gas outlets 30 on the fluid flow coming from the axial outlet.

L'organe 14 de réception comprend, outre la au moins une buse 15 de réception raccordée, en sortie, à des moyens 16 de collecte du flux de fluide pulvérisé et raccordable, en entrée, avec la sortie 29 axiale du flux de fluide à pulvériser du pistolet, au moins un conduit 17 d'évacuation de gaz raccordable en entrée avec la au moins une sortie 30 de gaz dudit pistolet et débouchant en sortie dans une zone dite zone d'évacuation des gaz distincte des moyens 16 de collecte du flux de fluide pulvérisé pour évacuer les gaz du pistolet dans une zone d'évacuation.The receiving member 14 comprises, in addition to the at least one receiving nozzle 15 connected, at the outlet, to means 16 for collecting the flow of sprayed and connectable fluid, at the inlet, with the axial outlet 29 of the flow of fluid to be sprayed. of the gun, at least one gas discharge duct 17 connectable at the inlet with the at least one gas outlet 30 of said gun and opening out in an area called gas evacuation zone distinct from the means 16 for collecting the flow of gas. sprayed fluid to evacuate the gun's gases into an evacuation zone.

Cet organe 14 de réception comprend encore, outre la buse 15 de réception destinée à coopérer avec la sortie 29 axiale du pistolet de pulvérisation et le conduit 17 d'évacuation, une bague 18 entourant ladite buse 15, en particulier la partie tronconique de ladite buse 15, l'entrée du au moins un conduit 17 d'évacuation étant ménagée entre bague 18 et buse 15 de réception. Un joint 19 d'étanchéité annulaire à surface périphérique externe convexe est logé à l'intérieur de ladite bague 18.This receiving member 14 also comprises, in addition to the receiving nozzle 15 intended to cooperate with the axial outlet 29 of the spray gun and the discharge pipe 17, a ring 18 surrounding said nozzle 15, in particular the frustoconical part of said nozzle 15, the inlet of the at least one evacuation pipe 17 being formed between ring 18 and receiving nozzle 15. An annular seal 19 having a convex outer circumferential surface is housed inside said ring 18.

Ledit au moins un conduit 17 d'évacuation des gaz comporte une entrée ménagée dans le volume formé par l'espace laissé libre entre la bague 18 et la buse 15 de réception, en particulier la partie tronconique de ladite buse 15, et une extrémité opposée ou sortie qui débouche dans la zone d'évacuation des gaz. Dans les exemples représentés, la zone d'évacuation des gaz est formée par l'air ambiant entourant le dispositif de nettoyage de sorte que ledit au moins un conduit d'évacuation des gaz débouche à l'air libre. A cet effet, le bâti 2 support comporte, dans sa zone dite arrière, opposée à son ouverture frontale, au moins une, de préférence une pluralité d'ouvertures correspondant au débouché à l'air libre du ou des conduits d'évacuation des gaz. Le joint 19, logé à l'intérieur de la bague 18, est chargé par un ressort 20 et est rappelé en position d'appui contre un épaulement 21 circonférentiel périphérique interne de la bague 18. A l'état relié de la sortie 28 du pistolet à l'organe 14 de réception, ce joint 19 entoure à contact d'appui étanche le canon du pistolet et empêche l'air sortant de l'extrémité du canon du pistolet par les sorties 30 de gaz de s'échapper hors du volume délimité par la bague 18, la buse 15 et ledit joint 19 et formant l'entrée du au moins un conduit 17 d'évacuation. La surface périphérique externe convexe du joint 19 permet audit joint de rotuler à l'intérieur du logement formé par la bague lorsque le canon du pistolet est introduit à l'intérieur du joint jusqu'à ce que l'extrémité du canon du pistolet vienne en contact d'appui avec l'extrémité conique de la buse 15 de réception et vienne coiffer l'extrémité de ladite buse. Il doit être noté que cette extrémité de buse est de préférence réalisée en un matériau élastiquement déformable. Dans cette position de contact d'appui de la sortie 29 axiale du fluide du pistolet avec l'extrémité conique de la buse 15 de réception, la sortie 30 radiale des gaz du canon du pistolet débouche dans le volume s'étendant entre la bague 18, le joint 19 et la buse 15 de réception et dans lequel est ménagée l'entrée du conduit 17 d'évacuation de gaz. Comme le joint 19 assure l'étanchéité avec le canon du pistolet, l'air propre est obligé de s'évacuer par le conduit 17 d'évacuation de gaz et est amené dans l'atmosphère de sorte que le volume de fluide à traiter collecté dans les moyens de collecte est moindre que dans l'état de la technique. Dans les exemples représentés, ledit organe 14 de réception comporte une pluralité de conduits 17 d'évacuation des gaz, lesdits conduits étant disposés à équidistance de l'axe de la buse 15 de réception. Ainsi, les entrées des conduits 17 d'évacuation de gaz dans l'espace ménagé entre bague 18 et buse 15 de réception sont disposées sur un cercle de centre situé sur l'axe central de la buse de réception. On augmente ainsi les possibilités d'évacuation de gaz dans l'atmosphère.Said at least one gas evacuation conduit 17 has an inlet formed in the volume formed by the space left free between the ring 18 and the receiving nozzle 15, in particular the frustoconical portion of said nozzle 15, and an opposite end or outlet that opens into the gas evacuation zone. In the examples shown, the gas evacuation zone is formed by the ambient air surrounding the cleaning device so that the at least one gas evacuation duct opens in the open air. For this purpose, the frame 2 support comprises, in its so-called rear zone, opposite to its front opening, at least one, preferably a plurality of openings corresponding to the outlet to the open air of the exhaust ducts or gases . The seal 19, housed inside the ring 18, is loaded by a spring 20 and is biased into a bearing position against an inner peripheral circumferential shoulder 21 of the ring 18. In the connected state of the outlet 28 of the gun to the receiving member 14, this seal 19 surrounds the gun barrel with sealing contact and prevents the air exiting from the end of the barrel of the gun by the gas outlets 30 to escape out of the volume delimited by the ring 18, the nozzle 15 and said seal 19 and forming the inlet of the at least one discharge conduit 17. The convex outer peripheral surface of the gasket 19 allows said gasket to be swiveled inside the housing formed by the ring when the gun barrel is introduced inside the gasket until the end of the gun barrel comes into position. bearing contact with the conical end of the receiving nozzle 15 and capping the end of said nozzle. It should be noted that this nozzle end is preferably made of an elastically deformable material. In this bearing contact position of the axial outlet 29 of the gun fluid with the tapered end of the receiving nozzle 15, the radial outlet 30 gun barrel gas flows into the volume extending between the ring 18, the seal 19 and the nozzle 15 receiving and wherein is formed the inlet of the conduit 17 gas discharge. As the seal 19 seals with the barrel of the gun, the clean air is forced to evacuate through the conduit 17 for evacuation of gas and is brought into the atmosphere so that the volume of fluid to be treated collected in the collection means is less than in the state of the art. In the examples shown, said receiving member 14 comprises a plurality of gas discharge ducts 17, said ducts being disposed equidistant from the axis of the receiving nozzle 15. Thus, the entrances of the gas discharge ducts 17 in the space between the ring 18 and the receiving nozzle 15 are arranged on a center circle located on the central axis of the receiving nozzle. This increases the possibilities of evacuation of gases in the atmosphere.

On peut voir que la buse 15 de réception présente une forme cylindro-conique. Cela permet de relier la buse 15 de réception à des pistolets présentant des sorties de peinture de diamètres différents.It can be seen that the receiving nozzle has a cylindro-conical shape. This makes it possible to connect the receiving nozzle 15 to guns having paint outlets of different diameters.

Ainsi, pendant une phase de nettoyage, le produit de nettoyage part de la tête d'alimentation 3 et passe successivement par la buse 5 d'alimentation, l'entrée 27 de peinture, le conduit interne, la sortie 28 du pistolet, l'organe 14 de réception puis arrive dans les moyens 16 de collecte. Comme on peut le constater, le produit de nettoyage circule donc en circuit fermé de la tête 3 d'alimentation aux moyens 16 de collecte. Ainsi, on évite que du fluide de nettoyage se vaporise dans l'environnement du dispositif 1 de nettoyage. La gêne de l'utilisateur est donc évitée. Après avoir fait circuler du produit de nettoyage, la tête 3 d'admission peut être commandée pour faire passer de l'air sous pression dans le circuit fermé précité afin de sécher le pistolet de pulvérisation et plus précisément d'évacuer le produit nettoyant restant dans le conduit interne. Les moyens 16 de collecte du fluide de nettoyage à traiter sont ici formés d'un conduit raccordé à la sortie de la buse 15 de réception et d'un réservoir alimenté en fluide de nettoyage à traiter par ledit conduit. Ce réservoir est un réservoir logé de manière généralement amovible dans la base du bâti support pour pouvoir être vidangé.Thus, during a cleaning phase, the cleaning product leaves the feed head 3 and passes successively through the feed nozzle 5, the paint inlet 27, the internal pipe, the outlet 28 of the gun, the receiving member 14 then arrives in the collection means 16. As can be seen, the cleaning product thus flows in a closed circuit from the feed head 3 to the collection means 16. Thus, it is avoided that cleaning fluid vaporizes in the environment of the cleaning device 1. The inconvenience of the user is avoided. After circulating the cleaning product, the inlet head 3 can be controlled to pass air under pressure in the closed circuit mentioned above to dry the spray gun and more specifically to evacuate the cleaning product remaining in the internal conduit. The means 16 for collecting the cleaning fluid to be treated are here formed of a duct connected to the outlet of the receiving nozzle 15 and a tank supplied with cleaning fluid to be treated by said duct. This reservoir is a tank housed in a generally removable manner in the base of the support frame to be emptied.

Le dispositif comporte encore des moyens 4 d'évacuation de fluide disposés dans la partie inférieure du volume 22 de nettoyage du bâti support. En effet, ce volume 22 de nettoyage est délimité au moins par la paroi périphérique du bâti et par une paroi inférieure inclinée délimitant une cuvette à l'intérieur du bâti afin de guider un écoulement vers un conduit 23 de drain qui débouche dans le conduit d'alimentation du réservoir des moyens de collecte. Ainsi, si, lors de la mise en place ou du retrait du pistolet 26 de pulvérisation, de la peinture ou du produit nettoyant s'écoule dans le volume 22, la paroi inférieure et le conduit de drain permettent une récupération vers le réservoir de produit de nettoyage à traiter.The device further comprises fluid evacuation means 4 disposed in the lower part of the cleaning volume 22 of the support frame. Indeed, this cleaning volume 22 is delimited at least by the peripheral wall of the frame and by an inclined lower wall delimiting a bowl inside the frame to guide a flow to a conduit 23 drain which opens into the conduit d supply of the reservoir of the collection means. Thus, if, during the introduction or removal of the spray gun 26, the paint or the cleaning product flows into the volume 22, the bottom wall and the drain duct allow recovery to the product reservoir. cleaning to treat.

Comme illustré aux figures 5 et 6, la buse 5 d'alimentation est montée mobile par rapport au bâti 2 support dans le sens d'un rapprochement ou d'un écartement des moyens 4 d'évacuation du dispositif.As illustrated in figures 5 and 6 , the feed nozzle 5 is mounted movably relative to the support frame 2 in the direction of an approximation or a spacing of the means 4 for discharging the device.

En particulier, la buse 5 d'alimentation est animée d'un mouvement de monte et baisse entre une position haute éloignée des moyens 4 d'évacuation et une position basse rapprochée desdits moyens 4 d'évacuation, ladite position basse étant une position ajustable en fonction au moins des caractéristiques dimensionnelles du pistolet de pulvérisation à nettoyer.In particular, the feed nozzle 5 is driven up and down between a high position remote from the evacuation means 4 and a low position close to said evacuation means 4, said lower position being an adjustable position. function at least of the dimensional characteristics of the spray gun to be cleaned.

Ainsi, lorsque la buse 5 d'alimentation et l'organe 14 de réception sont positionnés l'un par rapport à l'autre de manière à être reliés en même temps respectivement à ladite entrée 27 de peinture du pistolet 26 de pulvérisation et à la sortie 28 du pistolet de pulvérisation, le réglage du niveau de la buse 5 d'alimentation permet de faire varier sa position relative par rapport à l'organe 14 de réception et donc de s'adapter à des pistolets de caractéristique différente comme l'illustrent les figures 5 et 6, lesdits pistolets pouvant différer au niveau des dimensions de l'entrée de peinture, des dimensions de la sortie, de la distance et de l'orientation relative entre l'entrée de peinture et la sortie du pistolet. La tête 3 d'alimentation est quant à elle représentée plus en détail aux figures 1 et 2.Thus, when the supply nozzle and the receiving member 14 are positioned relative to each other so as to be connected at the same time respectively to said spray gun paint inlet 27 and to the output 28 of the spray gun, adjusting the level of the nozzle 5 supply allows to vary its relative position relative to the receiving member 14 and therefore to adapt to guns of different characteristics as illustrated the figures 5 and 6 , said guns being able to differ in the dimensions of the paint inlet, the dimensions of the outlet, the distance and relative orientation between the paint entry and the gun exit. The feed head 3 is in turn represented in greater detail in the figures 1 and 2 .

Dans les exemples représentés, la buse 5 d'alimentation est couplée au bâti 2 du dispositif 1 de nettoyage au moins par un porte-buse 8 formant, en coopération avec la buse 5, la tête 3 d'alimentation du dispositif de nettoyage. Le porte-buse 8 affecte la forme d'un corps tubulaire d'axe vertical équipé, à son extrémité inférieure, de la buse 5 d'alimentation et ouvert à son extrémité supérieure pour former une ouverture d'introduction d'une source de fluide de nettoyage, telle qu'un récipient 24 aérosol, à l'intérieur dudit porte-buse 8. Le récipient 24 aérosol est apte à être introduit par son diffuseur 25, c'est-à-dire tête en bas, à l'intérieur du porte-buse 8 jusqu'à ce que le diffuseur 25 vienne s'insérer au moins partiellement à l'intérieur de l'entrée 6 d'alimentation en fluide de nettoyage de la buse 5 d'alimentation débouchant dans le conduit de la buse 5 d'alimentation. Cette entrée 6 est formée par un conduit traversant épaulé ménagé dans le fond 9 du corps constitutif du porte-buse. Ainsi, une pression généralement manuelle appliquée sur le fond du récipient 24 aérosol permet, via le diffuseur 25 de récipient aérosol, d'alimenter en fluide de nettoyage ladite buse. Ce porte-buse 8 comporte, outre ce conduit traversant de logement du diffuseur 25 de récipient aérosol, communiquant avec la buse 5 d'alimentation, une portion de circuit d'entrée d'air raccordable à une extrémité à une source d'alimentation d'air comprimé et débouchant à son extrémité opposée dans ladite buse 5 d'alimentation en formant une entrée 7 d'air dans ladite buse distincte de l'entrée 6 d'alimentation en fluide de nettoyage. Le débouché 6A, 7A de chaque entrée 6, 7 d'alimentation en fluide de la buse 5 d'alimentation est un débouché axial d'axe parallèle à l'axe longitudinal du conduit de la buse 5 d'alimentation. Les entrées 7 d'air et 6 de fluide de nettoyage dans la buse 5 d'alimentation sont donc des entrées axiales disposées côté grande base du cône de la buse 5 d'alimentation tronconique de manière à faciliter l'écoulement des fluides à l'intérieur de la buse. Ces deux entrées distinctes permettent, sans déconnexion du pistolet et avec un montage simple, de procéder, dans un premier temps, à un nettoyage du pistolet puis, dans un deuxième temps, à un séchage du pistolet. Le porte-buse 8 est monté sur ledit bâti, mobile à coulissement suivant une direction parallèle à l'axe longitudinal du corps tubulaire constitutif du porte-buse. A cet effet, porte-buse 8 et bâti 2 sont équipés de moyens tels que rails, glissières, organes de roulement, patins ou autres pour le montage à coulissement du porte-buse sur ledit bâti. Dans le détail, le porte-buse comprend une paroi cylindrique qui délimite un logement ouvert vers le haut pour l'introduction du récipient aérosol dans ledit logement. Le fond du logement est fermé par une paroi de fond 9 qui présente un conduit traversant épaulé de préférence central. Ce conduit débouche dans le canal de la buse 5 d'alimentation et est sensiblement aligné avec ce dernier. Ce conduit forme l'entrée 6 d'alimentation en fluide de nettoyage de la buse 5.In the examples shown, the supply nozzle 5 is coupled to the frame 2 of the cleaning device 1 at least by a nozzle holder 8 forming, in cooperation with the nozzle 5, the feed head 3 of the cleaning device. The nozzle holder 8 has the shape of a vertical axis tubular body equipped at its lower end with the feed nozzle and open at its upper end to form an opening for introducing a source of fluid. cleaning device, such as an aerosol container, inside said nozzle holder 8. The aerosol container 24 is adapted to be introduced by its diffuser 25, that is to say, upside down, inside. of the nozzle holder 8 until the diffuser 25 comes to fit at least partially inside the inlet 6 for supplying cleaning fluid to the feed nozzle 5 opening into the conduit of the nozzle 5 power supply. This inlet 6 is formed by a stepped through duct formed in the bottom 9 of the constituent body of the nozzle holder. Thus, a generally manual pressure applied to the bottom of the aerosol container 24, via the aerosol container diffuser 25, to supply cleaning fluid to said nozzle. This nozzle holder 8 comprises, in addition to this through conduit housing of the aerosol container diffuser 25, communicating with the supply nozzle 5, an air inlet circuit portion connectable at one end to a power supply source. compressed air and opening at its opposite end in said feed nozzle forming an air inlet 7 in said nozzle separate from the cleaning fluid supply inlet 6. Outlet 6A, 7A of each inlet 6, 7 for supplying fluid to the supply nozzle 5 is an axial outlet with an axis parallel to the longitudinal axis of the duct 5 of the supply nozzle. The air inlets 7 and the cleaning fluid inlet 6 in the supply nozzle 5 are thus axial inlets disposed on the large base side of the cone of the frustoconical feed nozzle 5 so as to facilitate the flow of the fluids to the inside the nozzle. These two separate inputs allow, without disconnecting the gun and with a simple assembly, to proceed, at first, with a cleaning of the gun then, in a second time, with a drying of the gun. The nozzle holder 8 is mounted on said frame, slidably movable in a direction parallel to the longitudinal axis of the tubular body constituting the nozzle holder. For this purpose, nozzle holder 8 and frame 2 are equipped with means such as rails, slides, rolling members, pads or others for sliding mounting of the nozzle holder on said frame. In detail, the nozzle holder comprises a cylindrical wall which defines an upwardly open housing for the introduction of the aerosol container into said housing. The bottom of the housing is closed by a bottom wall 9 which has a through duct shouldered preferably central. This conduit opens into the channel of the feed nozzle 5 and is substantially aligned with it. This conduit forms the inlet 6 for supplying cleaning fluid to the nozzle 5.

L'entrée 7 d'air est également ménagée dans la paroi de fond du porte-buse 8 et débouche dans la buse d'alimentation par l'intermédiaire de passages axiaux. Cette entrée d'air est formée d'un conduit d'entrée d'air radial au porte-buse et relié à une source 33 d'air comprimé. Ce conduit débouche dans un volume annulaire disposé autour de l'entrée 6 d'alimentation en fluide de nettoyage de la buse. Ce volume annulaire est pourvu de passages axiaux alignés avec le conduit de la buse 5 d'alimentation. Ces passages axiaux forment le débouché 7A de l'entrée 7 d'air dans la buse 5. La tête d'alimentation 3 comprend également des poignées 13 radiales, dont l'une est représentée, qui sont fixées à la paroi cylindrique du porte-buse 8 et permettent le déplacement de la tête d'alimentation 3. On peut voir que la buse 5 d'alimentation présente une forme tronconique. Cela permet de relier la buse 5 d'alimentation à des pistolets présentant des entrées de peinture de diamètres différents.The air inlet 7 is also formed in the bottom wall of the nozzle holder 8 and opens into the feed nozzle via axial passages. This air inlet is formed of a radial air inlet duct to the nozzle holder and connected to a source 33 of compressed air. This conduit opens into an annular volume disposed around the inlet 6 for supplying cleaning fluid to the nozzle. This annular volume is provided with axial passages aligned with the conduit of the feed nozzle. These axial passages form the outlet 7A of the air inlet 7 in the nozzle 5. The supply head 3 also comprises radial handles 13, one of which is shown, which are fixed to the cylindrical wall of the carrier. nozzle 8 and allow the displacement of the feed head 3. It can be seen that the feed nozzle 5 has a frustoconical shape. This makes it possible to connect the feed nozzle to guns having paint entries of different diameters.

Un récipient 24 aérosol est agencé dans le logement ménagé dans le porte-buse 8, tête en bas. Le récipient 24 aérosol comprend un fond, éventuellement un tube plongeur et un diffuseur 25. Du produit nettoyant et du gaz propulseur sous pression sont contenus dans le récipient 24. Comme le montre la figure 2, le diffuseur 25 est agencé en butée dans le conduit traversant de la paroi de fond du porte-buse. Le récipient 24 aérosol peut coulisser dans le logement. Ainsi, si un utilisateur appuie sur le fond du récipient 24, le récipient 24 se rapproche du diffuseur 25, ce qui provoque l'ouverture d'une vanne (non représentée) du récipient 24 aérosol. Le produit nettoyant contenu dans le récipient 25 est alors expulsé et passe dans le diffuseur 25, l'entrée 6 et la buse 5 d'alimentation.An aerosol container 24 is arranged in the housing formed in the nozzle holder 8, upside down. The aerosol container 24 comprises a bottom, possibly a dip tube and a diffuser 25. Cleaner and propellant under pressure are contained in the container 24. As shown in FIG. figure 2 , the diffuser 25 is arranged in abutment in the conduit through the bottom wall of the nozzle holder. The aerosol container 24 can slide in the housing. Thus, if a user presses on the bottom of the container 24, the container 24 approaches the diffuser 25, which causes the opening of a valve (not shown) of the aerosol container 24. The cleaning product contained in the container 25 is then expelled and passes into the diffuser 25, the inlet 6 and the feed nozzle 5.

Le récipient 24 aérosol peut être facilement mis en place dans le logement, et facilement remplacé lorsqu'il est vide. De plus, un mélange de produit nettoyant et de gaz propulseur est expulsé. Ainsi, en choisissant le produit nettoyant et la forme du diffuseur de manière appropriée, il est possible d'expulser le produit nettoyant sous forme de mousse et d'améliorer la capacité de nettoyage. La tête d'alimentation 3 peut présenter une structure simple puisse qu'il n'est pas nécessaire de prévoir une pompe ou une vanne pour produit nettoyant.The aerosol container 24 can be easily placed in the housing, and easily replaced when empty. In addition, a mixture of cleaner and propellant is expelled. Thus, by choosing the cleaning product and the shape of the diffuser appropriately, it is possible to expel the cleaning product in the form of foam and to improve the cleaning ability. The feed head 3 can have a simple structure so that it is not necessary to provide a pump or a valve for cleaner.

Cependant, dans une variante non représentée, le dispositif de nettoyage pourrait comprendre une pompe pour produit nettoyant ou être relié à l'eau de distribution en guise de produit nettoyant.However, in a variant not shown, the cleaning device could comprise a cleaner pump or be connected to the dispensing water as a cleaning product.

A l'aide d'un dispositif de nettoyage, tel que décrit ci-dessus, on peut procéder de la manière suivante pour le nettoyage d'un pistolet : on positionne le pistolet sur l'organe de réception. On descend la tête 3 d'alimentation et donc la buse 5 jusqu'à une position de liaison avec l'entrée de peinture du pistolet. On appuie sur le récipient aérosol jusqu'à remplissage de l'entrée du pistolet. On vidange le pistolet par appui sur la gâchette du pistolet. On reproduit les opérations d'appui sur le récipient aérosol et de vidange autant de fois qu'il est nécessaire. On sèche ledit pistolet par envoi d'air comprimé à travers l'entrée de peinture dudit pistolet. On remonte la tête 3 et la buse 5 associée. On extrait le pistolet de la zone 22 de nettoyage.With the aid of a cleaning device, as described above, it is possible to proceed as follows for the cleaning of a gun: the gun is positioned on the receiving member. The feed head 3 and thus the nozzle 5 are lowered to a position of connection with the paint inlet of the gun. The aerosol container is pressed until the gun inlet is filled. The gun is drained by pressing the gun trigger. Bearing operations are repeated on the aerosol container and drain as many times as necessary. The gun is dried by sending compressed air through the paint inlet of said gun. We go back the head 3 and the associated nozzle 5. The gun is extracted from the cleaning zone 22.

Claims (14)

  1. A cleaning device (1) for a spray gun (26) of the type having at least one inlet (27) for fluid to be sprayed, called paint inlet (27), and a fluid outlet (28), said cleaning device (1) comprising at least one support housing (2), a fluid supply head (3) supported by said housing (2) and means (4) for discharging at least part of the fluid coming from said fluid supply head (3), said fluid supply head (3) including at least one supply nozzle (5) delimiting a duct designed to be connected to the paint inlet (27) of the spray gun, said cleaning device (1) including at least two independent fluid supply inlets (6, 7) of the supply nozzle (5), said inlets (6, 7) each having a distinct discharge end (6A, 7A) in the duct of said supply nozzle (5), said inlets (6, 7) being able to be connected for one (6) to a cleaning fluid source, and the other (7) to a compressed air source, characterized in that the supply nozzle (5) is coupled to the housing (2) of the device (1) by means of at least one nozzle holder (8) forming, in cooperation with the nozzle (5), the supply head (3) of the cleaning device, said nozzle holder (8) assuming the form of a tubular body with a vertical axis, equipped, at the lower end thereof, with the supply nozzle (5) and fluid supply inlets of said nozzle and open at its upper end to form an opening for inserting a cleaning fluid source, such as an aerosol container (24), inside said nozzle holder (8), said aerosol container (24) being able to be inserted by its diffuser (25), i.e., upside down, inside the nozzle holder (8) until the diffuser (25) is at least partially inserted inside the cleaning fluid supply inlet (6) of the supply nozzle (5) emerging in the duct of said supply nozzle (5).
  2. The cleaning device (1) according to claim 1,
    characterized in that the supply nozzle (5) has a cylindro-conical shape.
  3. The cleaning device (1) according to one of claims 1 or 2, characterized in that said supply nozzle (5) is mounted to be movable with respect to the support housing (2) in the direction bringing it closer to or further from the discharge means (4) of the device.
  4. The cleaning device (1) according to one of claims 1 to 3,
    characterized in that the supply nozzle (5) is mounted movably rising and lowering between an upper position separated from the discharge means (4) and a lower position closer to said discharge means (4), said lower position being adjustable as a function at least of the dimensional characteristics of the spray gun to be cleaned.
  5. The cleaning device (1) according to one of claims 1 to 4,
    characterized in that the outlet end (6A, 7A) of each fluid supply inlet (6, 7) of the supply nozzle (5) is an axial outlet end with an axis parallel to the longitudinal axis of the duct of the supply nozzle (5).
  6. The cleaning device (1) according to one of claims 1 to 5,
    characterized in that the discharge means (4) of the cleaning device comprise at least one fluid receiving member (14) designed to be connected as input to the fluid outlet (28) of the gun (26).
  7. The cleaning device (1) according to claim 6,
    characterized in that the supply nozzle (5) and said receiving member (14) are positioned with respect to one another so as to be able to be connected at the same time respectively to said paint inlet (27) of the spray gun (26) and the outlet (28) of the spray gun.
  8. The cleaning device (1) according to one of claims 6 and 7,
    characterized in that the supply nozzle (5) and the receiving member (14) are mounted on said support housing (2) delimiting a cleaning volume housing the receiving member (14) and inside which said gun to be cleaned can be at least partially inserted, said supply nozzle (5) including at least one position in which it is at least partially positioned inside said cleaning volume.
  9. The cleaning device (1) according to one of claims 6 to 8, of the type in which the outlet (28) of the spray gun to be cleaned comprises at least one axial outlet (29) for fluid to be sprayed and at least one, preferably a plurality of, outlet(s) (30), preferably radial, called pressurized gas outlet(s) (30), for example serving to adjust the shape of the fluid stream coming from the axial outlet (29),
    characterized in that said receiving member (14) on the one hand comprises at least one receiving nozzle (15), preferably cylindro-conical, connected, at the outlet, to collecting means (16) of the sprayed fluid stream and connectable, as input, with the axial outlet (29) of the sprayed fluid stream of the gun, on the other hand comprising at least one gas discharge duct (17) connectable as input with the at least one gas outlet (30) of said gun and emerging at the outlet in a zone, called gas discharge zone, distinct from the collecting means (16) for the sprayed fluid stream.
  10. The cleaning device (1) according to claim 9,
    characterized in that said receiving member (14) comprises, aside from the receiving nozzle (15) designed to cooperate with the axial outlet (29) of the spray gun, a ring (18) surrounding said nozzle (15), the inlet of the at least one discharge duct (17) being formed between the ring (18) and the receiving nozzle (15).
  11. The cleaning device (1) according to claim 10,
    characterized in that an annular seal (19) with a convex outer peripheral surface is housed inside said ring (18).
  12. The cleaning device (1) according to claim 11,
    characterized in that the seal (19), housed inside the ring (18), is loaded by a spring and is returned into a position bearing against an inner peripheral circumferential shoulder of the ring (18).
  13. The cleaning device (1) according to one of claims 9 to 12,
    characterized in that the gas discharge zone is formed by the ambient air surrounding the cleaning device such that the end of the discharge duct (17) separate from the collecting means (16) of the fluid stream emerges in the open air.
  14. The cleaning device (1) according to claim 13,
    characterized in that the gas discharge zone being formed by the ambient air surrounding the cleaning device, the support housing (2) includes, in the so-called rear zone thereof opposite the frontal opening thereof, at least one, preferably a plurality of openings corresponding to the open air outlet end of the gas discharge duct(s).
EP10718636.3A 2009-04-08 2010-03-31 Cleaning device for spray gun Not-in-force EP2416895B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL10718636T PL2416895T3 (en) 2009-04-08 2010-03-31 Cleaning device for spray gun
EP12164723.4A EP2478972B1 (en) 2009-04-08 2010-03-31 Cleaning device for spray gun

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0901735A FR2944221B1 (en) 2009-04-08 2009-04-08 CLEANING DEVICE FOR SPRAY GUN
FR0901734A FR2944220B1 (en) 2009-04-08 2009-04-08 CLEANING SPRAY GUN
PCT/FR2010/050603 WO2010116070A2 (en) 2009-04-08 2010-03-31 Cleaning device for spray gun

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP12164723.4A Division EP2478972B1 (en) 2009-04-08 2010-03-31 Cleaning device for spray gun
EP12164723.4 Division-Into 2012-04-19

Publications (2)

Publication Number Publication Date
EP2416895A2 EP2416895A2 (en) 2012-02-15
EP2416895B1 true EP2416895B1 (en) 2013-08-07

Family

ID=42936636

Family Applications (2)

Application Number Title Priority Date Filing Date
EP12164723.4A Not-in-force EP2478972B1 (en) 2009-04-08 2010-03-31 Cleaning device for spray gun
EP10718636.3A Not-in-force EP2416895B1 (en) 2009-04-08 2010-03-31 Cleaning device for spray gun

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP12164723.4A Not-in-force EP2478972B1 (en) 2009-04-08 2010-03-31 Cleaning device for spray gun

Country Status (7)

Country Link
US (1) US9192969B2 (en)
EP (2) EP2478972B1 (en)
BR (1) BRPI1015960A2 (en)
CA (1) CA2757385C (en)
FR (1) FR2944221B1 (en)
PL (1) PL2416895T3 (en)
WO (1) WO2010116070A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106345720A (en) * 2015-07-17 2017-01-25 沈阳芯源微电子设备有限公司 Automatic spray nozzle cleaning device and cleaning method thereof

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Publication number Priority date Publication date Assignee Title
DE102007012859B4 (en) * 2007-03-17 2009-01-02 Josef Albrecht Bohrfutterfabrik Gmbh & Co. Kg Flushable food
FR2994111B1 (en) * 2012-07-31 2014-08-22 Fillon Technologies CLEANING DEVICE FOR SPRAY GUN
CN102989704A (en) * 2012-11-26 2013-03-27 吴江市金真缝纫机有限公司 Cleaning device and cleaning method for nozzle of jet loom
CN105170579A (en) * 2015-09-30 2015-12-23 舒恒管夹制造有限公司 Sundry removing device for liquid pipeline
CN109225735B (en) * 2018-10-25 2024-05-28 中国计量大学 Spray gun cleaning machine
DE102018130809A1 (en) * 2018-12-04 2020-06-04 Dürr Systems Ag Collection device for rinsing media of an atomizer
US12122350B2 (en) 2021-02-22 2024-10-22 Cnh Industrial America Llc System and method for purging agricultural sprayer nozzles using air pressure data
CN118681716A (en) * 2024-08-22 2024-09-24 泰兴市南磷化工有限公司 High-efficient safe phosphorus supply spray gun of yellow phosphorus

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US2745418A (en) * 1953-08-10 1956-05-15 John A Balcom Apparatus for cleaning paint spray guns and containers utilized in conjunction therewith
US3771539A (en) * 1972-05-19 1973-11-13 Santis B De Paint gun cleaner
GB8527244D0 (en) * 1985-11-05 1985-12-11 Roberts G S Cleaning spray painting guns
WO2008084327A2 (en) * 2006-07-31 2008-07-17 Chemchamp (Barbados) Inc. Paint gun washer station for paint guns and the like
US7785420B2 (en) 2006-08-01 2010-08-31 Hedson Technologies Ab Method for cleaning a spray gun

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106345720A (en) * 2015-07-17 2017-01-25 沈阳芯源微电子设备有限公司 Automatic spray nozzle cleaning device and cleaning method thereof
CN106345720B (en) * 2015-07-17 2019-04-30 沈阳芯源微电子设备有限公司 A kind of spraying nozzle automatic flushing device and its cleaning method

Also Published As

Publication number Publication date
WO2010116070A2 (en) 2010-10-14
US20120042912A1 (en) 2012-02-23
PL2416895T3 (en) 2014-01-31
BRPI1015960A2 (en) 2016-04-26
FR2944221A1 (en) 2010-10-15
EP2478972A1 (en) 2012-07-25
FR2944221B1 (en) 2012-03-09
EP2416895A2 (en) 2012-02-15
EP2478972B1 (en) 2014-04-30
CA2757385A1 (en) 2010-10-14
CA2757385C (en) 2016-12-13
WO2010116070A3 (en) 2011-01-06
US9192969B2 (en) 2015-11-24

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