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EP0213476B1 - Distributeur de matières coulantes - Google Patents

Distributeur de matières coulantes Download PDF

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Publication number
EP0213476B1
EP0213476B1 EP86111114A EP86111114A EP0213476B1 EP 0213476 B1 EP0213476 B1 EP 0213476B1 EP 86111114 A EP86111114 A EP 86111114A EP 86111114 A EP86111114 A EP 86111114A EP 0213476 B1 EP0213476 B1 EP 0213476B1
Authority
EP
European Patent Office
Prior art keywords
piston
pump
chamber body
casing
dosing chamber
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.)
Expired - Lifetime
Application number
EP86111114A
Other languages
German (de)
English (en)
Other versions
EP0213476A2 (fr
EP0213476A3 (en
Inventor
Lothar Graf
Karl-Heinz Fuchs
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.)
Aptar Radolfzell GmbH
Original Assignee
Ing Erich Pfeiffer GmbH
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
Application filed by Ing Erich Pfeiffer GmbH filed Critical Ing Erich Pfeiffer GmbH
Publication of EP0213476A2 publication Critical patent/EP0213476A2/fr
Publication of EP0213476A3 publication Critical patent/EP0213476A3/de
Application granted granted Critical
Publication of EP0213476B1 publication Critical patent/EP0213476B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B05B15/30—Dip tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/02—Membranes or pistons acting on the contents inside the container, e.g. follower pistons
    • B05B11/028—Pistons separating the content remaining in the container from the atmospheric air to compensate underpressure inside the container
    • B05B11/029—Pistons separating the content remaining in the container from the atmospheric air to compensate underpressure inside the container located on top of the remaining content
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1001—Piston pumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/1066—Pump inlet valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/1073—Springs
    • B05B11/1074—Springs located outside pump chambers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1094—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle having inlet or outlet valves not being actuated by pressure or having no inlet or outlet valve

Definitions

  • the invention relates to a discharge device for flowable media according to the preamble of claim 1.
  • a discharge device which has a slide-controlled inlet and outlet valve, the valve slide formed by a piston sleeve is guided on the piston raceway and encloses a piston core, but not a pump chamber.
  • the invention has for its object to provide a discharge device of the type described, which ensures a safe and complete filling of the pump chamber with each pump cycle with a relatively small pump stroke.
  • the media inlet can be opened on a relatively large inlet cross section. If the metering chamber body is to be moved with the pump piston into the position associated with the closed position of the media inlet, the metering chamber body is immersed in the medium during this movement, the metering chamber body being repeatedly filled with a precisely determined volume with little effort.
  • the dosing chamber body itself forms the movable valve closing part of an inlet valve with its front, annular cutting-shaped end in the direction of the pump stroke of the pump piston, which, at the end of an idle movement of the dosing chamber body associated with the pump stroke, dips into an annular groove-shaped valve seat of the housing and thereby both the associated end position of the dosing chamber body defines by stop, and also closes the dosing chamber body, which is initially open to practically its full inner width, at this moment at the end which is opposite the pump piston in the starting position, so that the cylinder chamber or the pump chamber is then securely closed on this cylinder end face and only for Discharge opening is open.
  • the valve closing part of which is movably mounted on the cylinder between an open and a closed position, for example in the manner of a check valve
  • the main advantage of the subject matter of the invention is that the valve closing part is controlled purely in a position-dependent manner by means of the pump piston or by the pump piston and also can be designed without special space so that extremely large inlet cross-sections result when the inlet valve is open.
  • the inside width of the inlet valve or of the metering chamber body forming the pump chamber and the piston track can be in the order of magnitude of the pump stroke or can be substantially larger than this, for example more than twice as large.
  • the design according to the invention is particularly suitable for such discharge devices which are structurally combined with a media store, ie do not have to be connected to a separate media store via a media supply line leading to the inlet.
  • the dosing chamber body can be arranged practically completely floating within the stored medium as an immersion body, so that when it moves to the closed position of the media inlet it practically sticks out the media volume filling it from the medium surrounding it.
  • the metering chamber body can be arranged directly adjacent to the bottom of the storage housing, that is to say at its end remote from the discharge and actuation end, so that, independently of the filling state of the media storage device, the area in the area of the metering chamber body or partially formed by this thrust piston pump always result in approximately the same operating conditions.
  • the discharge device in such a way that its spaces filled with or to be flowed through by the medium are sealed airtightly before the first use of the discharge device and / or after each pumping stroke, so that the media content of the discharge device is always protected against drying out, penetration of bacteria and the like right up to the discharge opening.
  • the said spaces of the discharge device are essentially completely filled with medium already during the manufacture or first filling of the discharge device, that is to say until the discharge opening or an outlet valve located close to it, so that the a full, precisely metered discharge volume is applied the first time the thrust piston pump is actuated.
  • the discharge device expediently has a trailing piston at the end of the storage space remote from the media inlet, which is formed and designed for the complete ventilation of the storage space and for the first filling of the outlet channel in accordance with patent application P 35 05 911.7 - to which reference is made here for further details can be arranged.
  • a ventilation channel is assigned to this empty space, which, depending on the position of the pumping piston, is only open when the pumping piston is in one of is different from its starting position.
  • a piston tappet of the pump piston penetrating this empty space and led out of the housing is sealed out through a through opening of the housing and carries an actuating head of the discharge device outside the housing.
  • the sealing of the cavities of the discharge device assigned to the medium can also be improved in that an outlet valve is arranged in the outlet channel between the pump piston and the discharge opening, preferably directly adjacent to the discharge opening, which tightly closes the outlet channel on its two flow sides when there is pressure equilibrium.
  • This outlet valve which is expediently designed as a pressure relief valve, can be a spring-loaded ball valve, but also a hose valve according to DE-OS 29 02 624, to which reference is made for further details.
  • the discharge device 1 has a housing 3 which is essentially axially symmetrical with respect to a central axis 2 and which has constant, for example cylindrical, cross sections over most of its length and at one end with a truncated cone-shaped base 4 and with an inside this lying bottom wall 5 is provided in the form of a transverse wall perpendicular to the central axis 2, which is formed in one piece with the jacket 6 of the housing 3.
  • the other, at full inner width open end of the one-piece base body of the housing 3 is sealed airtight with an end cover in the form of a cover cap 7, which engages with an annular flange in the inner surface of the shell 6 of the housing 3, the outer circumference of the ring flange and the inner circumference of the Jacket 6 interlocking, ring-shaped around the central axis 2 continuous grooves and ribs are provided, which ensure both a positive connection between the casing 6 and the cover cap 7 and a tight seal in the manner of seals.
  • the cover cap 7 lies with an annular disk-shaped flange on the associated end face of the jacket 6, this flange adjoining the outer circumference of the jacket 6.
  • the cover cap 7 is fastened in the manner of a snap ring attachment only by being pressed into the jacket 6.
  • a thrust piston pump 8, coaxial with the central axis 2, is arranged within the housing 3, the pump piston 10 of which is located close to the bottom wall 5 and the two-part piston tappet 9 is guided through the housing 3 out of the cover cap 7 to the outside.
  • the section 11 of the piston tappet 9 passing through the cover cap 7 is guided to the outside through a through opening in an end wall 12 of the cover cap 7, an annular seal running on the outer circumference of this section 11, which in the form of an annular sealing lip 13 tapering at an acute angle in the shape of a truncated cone in one piece with the end wall 12 or the cover cap 7 is formed and rests with prestress on the cylindrical outer circumference of section 11.
  • the cover cap 7 On the outside of the end wall 12, the cover cap 7 has a guide sleeve 14 which is formed in one piece with it and which is smaller than the width of the jacket 6 and which carries an actuating head 15 for actuating the discharge device or the push piston pump 8.
  • the cams mentioned have mutually assigned inclined run-up surfaces, so that the actuating head 15 can be mounted only by pressing onto the guide sleeve 14, the mating ring cam 17 driving over the ring cam 16 with elastic expansion and then jumping into its engaging functional position.
  • the annular cams can rest against each other in an airtight manner, so that the space enclosed by the guide sleeve 14 and the actuating head 15 is hermetically sealed.
  • the section 11 of the piston rod 9 is formed in one piece with the actuating head 15, this section 11 projecting freely from the inside of the end wall of the actuating head 15 and projecting beyond the mating ring cam 17.
  • a return spring 18 is arranged around the section 11 in the guide sleeve 14 and in the actuating head 15 and is supported with one end on the outside of the end wall 12 and with the other end on the inside of the end wall of the actuating head 15 with prestress.
  • This return spring 18 can also be supported on an outer flank of the annular sealing lip 13 in such a way that it is loaded by the spring pressure towards its sealing system.
  • the actuating head 15 has a discharge nozzle 19 which projects radially from its jacket in the vicinity of its end wall and has a discharge opening 20 provided in its end face and leading to the outside.
  • a sealing and protective cap 21 is detachably blown open, which engages with its spherical cap-shaped inward end wall in the discharge opening 20 lying coaxially to it in such a way that it engages with it by continuous contact tightly seals its outer boundary edge.
  • an outlet valve 22 is arranged in the form of a ball pressure relief valve, which is only at a distance from the discharge opening 20 by the length of its valve spring.
  • a trailing piston 23 is arranged in the housing 3, which has two annular sealing lips 24, 25, which are axially one behind the other and point away from the thrust piston pump 8 at an acute angle, frusto-conical, on the inner surface 29 of the housing shell 6 and with two inner ring sealing lips 27, 28 protruding in the same direction, but narrowing frustoconically in this direction at an obtuse angle and slightly offset axially to the thrust piston pump 8 relative to the outer ring sealing lips 24, 25, lies sealingly against the outer circumference of a section 30 of the piston rod 9 which is in one piece with the pump piston 10.
  • the housing 3 with its jacket 6 forms a media store 31, the storage space 32 of which is annular in cross section.
  • the thrust piston pump 8 is located in this storage space 32, but the vast majority of the storage space 32 is located behind the thrust piston pump 8, i.e. adjacent to that end of the thrust piston pump or pump piston 10 that represents the rear end thereof during the pumping stroke or the cover cap 7 and the actuating head 15 is facing, from which the plunger 9 is guided to the outside.
  • the housing 3 On the side of the trailing piston 23 facing away from the storage space 32, the housing 3 encloses an outwardly sealed empty space 33 which is likewise penetrated by the piston tappet 9 and is sealed with the annular sealing lip in the region of its passage through the end wall 12.
  • a ventilation duct 34 is assigned to this empty space 33, for example can be formed by a single longitudinal groove 35 on the outer circumference of section 11 of the piston rod 9.
  • the ventilation channel 34 to the empty space 33 is hermetically sealed by the fact that the longitudinal groove 35, which is only part of the length of section 11, lies completely outside the empty space 33 adjacent to the outside of the annular sealing lip 13.
  • the associated end of the longitudinal groove 35 passes over the annular sealing lip 13 in such a way that now there is a ventilation connection between the empty space 33 and that of the guide sleeve 14 and the actuating head 15 enclosed space is produced, which remains open during the remaining pump stroke and is only closed again towards the end of the reverse stroke directed in the direction of arrow 37.
  • the trailing piston 23 can run unimpeded with the movements of the medium in the storage space 32 in such a way that its end face delimiting the storage space 32, regardless of the filling state of the storage space 32, remains in direct contact with the medium.
  • the arrangement of the ventilation channel 34 is expediently coordinated so that the ventilation channel is opened during the pump stroke approximately in the position to the empty space 33 in which an inlet valve of the push piston pump 8, which is still to be described, has come into the closed position, so that the trailing piston 23 is at overpressure can only move relatively stiffly in the storage space 32, while it runs relatively smoothly when there is negative pressure in the storage space 32.
  • the push piston pump 8 has a suspension on the pump piston 10 and with it parallel to the central axis 2 in the arrow directions 36, 37 between two end positions the housing 3 movable dosing chamber body 38, which is arranged close to the inside of the bottom wall 5 completely within the storage space 32 and is movable in the arrow directions 36, 37 relative to the pump piston 10 by an amount greater than its maximum movement distance relative to the housing 3 is.
  • the dosing chamber body 38 which in the starting position of the pump piston 10 is closed in a cup-shaped manner by this at the rear end facing away from its media inlet 39, has a jacket 40 which is coaxial with the central axis 2 of the pump piston 10, in particular essentially cylindrical, in such a way that the dosing chamber body 38 is formed by a simple sleeve.
  • the outer cross section of the metering chamber body 38 which is adapted to the inner cross section of the housing 3 or of the jacket 6, is smaller than the inner cross section of the jacket 6 in such a way that the metering chamber body 38 has a constant distance from the inner surface 29 of the jacket 6 approximately over its entire outer circumference 43.
  • the metering chamber body 38 With the outer circumference 43, the metering chamber body 38 is guided on the edge surfaces of the longitudinal webs 44 facing the central axis 2, which webs are provided on the inner surface of the housing shell 6 and are preferably formed in one piece therewith. According to FIG. 3, three longitudinal guide webs evenly distributed around the central axis 2 are provided. Adjacent to its rear end 41, the metering chamber body 38 is reduced in its outer width such that a rear-facing stop shoulder 45 is formed, with which the metering chamber body 38 bears against stop cams 45 in its starting position. In the exemplary embodiment shown, these stop cams 45 are formed by the associated, radially inwardly projecting ends of the longitudinal webs 44. These longitudinal webs 44 go continuously to the bottom wall 5.
  • an inlet valve 47 is provided which has an annular valve body 48 which is coaxial with the central axis 2 and can be moved with respect to the housing 3 and a valve seat which is fixed with respect to the housing 3 49 has.
  • the valve body 48 has a cross-sectional shape or diverges from the rear end 41 of the metering chamber body 38 such that its outer flank 50, which is formed by a frustoconical end face of the metering chamber body 38, diverges rearward at an angle of approximately 90 ° or less, while its radial inner flank 51 formed by a cylindrical surface lies in cross section essentially axially parallel to the central axis 2 or to the direction of movement of the metering chamber body 38.
  • the valve seat 49 is formed by an annular groove in the inside of the bottom wall 5, the cross section of which is adapted to the cross section of the valve body 48 in such a way that when the inlet valve 47 is closed, its flanks 50, 51 on the associated inner flanks of the valve seat 49 lies essentially over the entire surface.
  • the axial extent of at least the outer flank 50 of the valve body 48 is, however, greater than the axial extent of the associated inclined inner flank of the valve seat 49, so that this flank 50, when the inlet valve 47 is closed, still has an inclined section projecting inward beyond the valve seat 49.
  • the flank 50 is guided up to the outer circumference 43 of the metering chamber body 38.
  • the metering chamber body 38 can be moved back and forth between the starting position defined by the stop cams 46 and a pump position determined by engagement of the valve body 48 in the valve seat 49.
  • the stop cams 46 have inclined inlet surfaces on their sides facing the central axis 2, against which the dosing chamber body 38 can be pressed axially with its flank 50 in such a way that the stop cams 46 dodge while elastically widening the container jacket 6 until they jump behind the stop shoulder 45.
  • the axial stroke of the metering chamber body 38 is substantially smaller than its outer diameter, but in the starting position the front end face formed by the annular lip end lip of the valve body 48 lies at an axial distance from the inner surface of the bottom wall 5 or from the valve seat 49. Due to the distance of the outer circumference 43 from the container jacket 6, annular cut-out media connections 52 are formed between the longitudinal webs 44 between the main part of the media storage space 32 behind the thrust piston pump 8 and the media inlet 39.
  • the inner surface of the casing 40 of the metering chamber body 38 forms a piston raceway 53 of constant width over most of its length, which is expediently cylindrical.
  • the piston runway 53 merges into an internal, enlarged, conical frustum-shaped driving shoulder 54 that extends appropriately at an acute angle to the frustum of a cone up to the rear end surface of the metering chamber body.
  • the piston raceway 53 also merges into an inner, enlarged, annular driving shoulder 55, which diverges in the shape of a truncated cone to the front end, but whose cone angle is smaller than that of the driving shoulder 54.
  • the driving shoulder 55 lies at a distance behind the front end face of the metering chamber body 38 or the valve body 48, which is at least as large as the depth of the valve seat 49, the driving shoulder 55 expediently merging directly into the flank 51.
  • the pumping piston 10 has two axially one behind the other, resilient piston lips 56, 57, which protrude radially beyond its remaining outer circumference, the rear of which widens conically at an obtuse or acute angle and, in a relaxed state, is larger in its outer width than the front piston lip 57 , which is expanded forward at an acute angle in a relaxed state at a smaller cone angle.
  • the piston lips 56, 57 are at an axial distance from one another that is smaller than the axial distance of the driving shoulders 54, 55 from one another.
  • the two piston lips 56, 57 start from a common ring-shaped lip root 58, which forms the base body of the pump piston 10, to which the associated section 30 of the piston tappet 9 is connected.
  • the outer circumference of the rear piston lip 56 rests essentially over the entire area on the driving shoulder 54.
  • the ring-shaped lip sealing surface of the piston lip 56 associated with the piston raceway 53 therefore has a diameter that is substantially larger than that of the piston raceway 53.
  • the lip sealing surface provided at the front end of the piston lip 57 lies here approximately in the middle of the length of the piston raceway 53.
  • the valve body 48 is moved in the direction of the valve seat 49 so that the cross section of the inlet 39 is reduced and the inlet valve 47 is finally closed.
  • the flank 50 displaces the medium which completely surrounds the dosing chamber body 38 outwards and out of the valve seat 49, while the flank 51 runs into the associated flank of the valve seat 49 in the manner of a shear cutting edge.
  • the piston lip 56 runs like a spring catch from the driving shoulder 54, the piston lip 56 having an acute-angled frustoconical shape is transferred.
  • the pump piston 10 displaces the medium contained therein from the pump chamber 59 enclosed by the metering chamber body 38 into an outlet channel 60, which forms the connection between the pump chamber 59 and the discharge opening 20.
  • the end of the pump stroke of the pump piston 10 is defined by a stop projecting beyond the inside of the bottom wall 5 in the form of a stop ring 61 coaxial with the central axis 2, the outside diameter of which is smaller than the inside diameter of the metering chamber body 38 or the diameter of the piston raceway 53, and the latter
  • An internal stop shoulder 62 which is expediently formed by the front end face of the lip root 58, is assigned to the end face as a counter stop.
  • the pump piston 10 is fixed before the piston lip 57 strikes the bottom wall 5, so that the piston lip 57 is protected.
  • the front piston lip 57 reaches the area of the driving shoulder 55 with radial or conical widening until it reaches the full stroke of the pump stroke position according to FIG. 5.
  • the piston lip 57 then also forms a non-positive, releasable latching connection between the pumping piston 10 and the metering chamber body 38 with the driving shoulder 55, the latching force of which, however, can be less than the latching connection between the piston lip 56 and the driving shoulder 54.
  • the respective latching connection need not be provided directly between the respective piston lip and the metering chamber body 38, but rather can also have a detent member on the piston unit separate from the respective piston lip; it is also conceivable to select the frictional connection between the pump piston 10 and the metering chamber body 38 so high that separate driver shoulders, at least the front driver shoulder 55, is not required and the piston raceway 53 can thus continuously pass through to the associated end face of the metering chamber body 38. If the pump piston 10 is released in the pump stroke end position, it is moved back by the force of the return spring 18 in the direction of arrow 37 of its return stroke, without the need for a separate spring for the metering chamber body.
  • the inlet valve 47 is opened and, during the further return stroke of the pump piston 10, a negative pressure is built up in the pump chamber 59, so that the medium connection 39 and the annular media inlet 39 medium delimited on the inner circumference by the stop ring 61 is sucked into the pump chamber 59 from the storage space 32.
  • the stop ring 61 also projects into the front end of the dosing chamber body 38 when the dosing chamber body is in the starting position.
  • the rear end of the metering chamber body 38 is also designed in the form of an annular cutting edge, one flank of the cutting edge being formed by the driving shoulder 54, so that the metering chamber body 38 is relatively resistant due to the Medium can move.
  • the method described, according to which the discharge device operates, results in a very precise metering when the storage space 32 is sealed airtight.
  • the pump piston 10 which has a larger working stroke than the metering chamber body 38, is arranged at the end of a relatively long, resilient piston plunger 9, it is guided precisely over the metering chamber body 38.
  • the section 30 of the piston tappet 9 is tubular, such that the associated section of the outlet channel 16 passes through it in the central axis 2. Adjacent to the pump piston 10, the section 30 of the piston tappet 9 is widened in steps, such that the outlet channel 60 in the inner cross section of the pump chamber 59 decreases several times in cross section in the outlet direction. The end of the section 30 remote from the pump piston 10 is inserted into the section 11 of the piston tappet 9 and is thereby secured both axially and about the central axis 2 with respect to the actuating head 15.
  • the outlet channel 60 also passes through the tubular section 11 of the piston tappet 9 and opens into a radial channel 63 in which the outlet valve 22 is located and which is provided coaxially with the discharge opening 20.
  • the outlet valve 22a is provided further away from the discharge opening 20a in the central axis 2a, specifically within the section 11a of the piston rod 9a associated with the actuating head 15a.
  • the valve seat is formed by the associated end of the portion 30a of the piston rod 9a associated with the pump piston, on which the valve body of the exhaust valve 22a formed by a ball rests under the force of a valve spring lying within the section 11a.

Landscapes

  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Reciprocating Pumps (AREA)
  • Closures For Containers (AREA)
  • Coating Apparatus (AREA)

Claims (14)

  1. Distributeur de matières coulantes, en particulier des pâtes ou substances similaires, muni d'une pompe (8) à piston refouleur qui présente un carter (3) destiné à être empli de matière, un piston de pompage (10) guidé à coulissement sur une piste de glissement (53) d'un cylindre de pompage, entre une position de départ (figure 2) et une position extrême de la course de pompage, ainsi qu'une chambre de pompage (59) formée par le cylindre de pompage, reliée à un orifice de distribution (20) du distributeur, délimitée par une enveloppe (40), et dans laquelle débouche une admission (39) de matière qui se ferme en fonction de la course de pompage, et s'ouvre en fonction de la course de retour du piston de pompage (10), caractérisé par le fait que l'enveloppe (40) de la chambre de pompage (59), matérialisant un corps de compartiment doseur (38), est agencée mobile axialement entre deux positions extrêmes, par rapport au carter (3), de telle sorte que le corps de compartiment doseur (38) soit animé d'un mouvement, en fonction du mouvement du piston de pompage (10), jusqu'à ce que l'une respective des positions extrêmes précitées soit atteinte ; et par le fait que l'extrémité du corps de compartiment doseur (38), qui est associée à la chambre de pompage (59), forme l'admission (39) de matière avec des parties correspondantes du carter (3).
  2. Distributeur selon la revendication 1, caractérisé par le fait que l'admission (39) de matière peut être obturée par une soupape d'admission (47) ouverte et fermée en fonction de la position du corps de compartiment doseur (38), un organe obturateur, notamment le corps obturateur (48) de la soupape d'admission (47) étant; de préférence, directement prévu sur le corps de compartiment doseur (38), ou respectivement formé par ce dernier.
  3. Distributeur selon la revendication 2, caractérisé par le fait que la soupape d'admission (47) est notamment de réalisation annulaire autour d'un axe médian (2) du piston de pompage (10), et/ou le corps obturateur (48) est prévu à l'extrémité de l'enveloppe (40) de la chambre du corps de compartiment doseur (38) ; et par le fait que, de préférence, le siège obturateur (49) de la soupape d'admission (47) forme une surface de butée pour la position extrême correspondante du corps de compartiment doseur (38), et est notamment formé par un encaissement qui est ménagé dans une paroi transversale (5) du carter (3), et dont la section transversale est adaptée à celle du corps obturateur (48).
  4. Distributeur selon la revendication 1 ou 2, caractérisé par le fait que le piston de pompage (10) s'engage mécaniquement dans la direction de l'entraînement (flèches 36, 37), en particulier exclusivement par au moins une lèvre (56, 57), dans le corps de compartiment doseur (38) formant le cylindre de pompage, le piston de pompage (10) et le corps de compartiment doseur (38) pénétrant préférentiellement l'un dans l'autre par l'intermédiaire d'un encrantage élastique, dans au moins l'une de leurs deux positions extrêmes mutuelles, avec une interaction mécanique plus grande que l'interaction par frottement s'opérant entre la piste de glissement (53) et le piston de pompage (10).
  5. Distributeur selon l'une des revendications précédentes, caractérisé par le fait que le corps de compartiment doseur (38) présente au moins un épaulement d'entraînement (54, 55) notamment annulaire, en vue de la venue en prise par déclic d'une lèvre (56, 57) du piston de pompage (10), lequel est de préférence pourvu de deux lèvres coniques (56, 57) faisant approximativement saillie à l'opposé l'une de l'autre, dont l'une emprisonne par-derrière, dans la position extrême de départ (figure 2), un épaulement conique d'entraînement (54) dans la région de l'extrémité postérieure (41), et/ou l'autre lèvre (57) du piston emprisonne par-derrière, dans la position extrême de la course de pompage, un épaulement conique d'entraînement (55) dans la région de l'extrémité antérieure (42) du corps de compartiment doseur (38).
  6. Distributeur selon l'une des revendications précédentes, caractérisé par le fait que la position extrême de départ (figure 2) du corps de compartiment doseur (38) est fermement arrêtée par butée vis-à-vis du carter (3), le corps de compartiment doseur (38) comportant de préférence sur son pourtour extérieur, dans la région de son extrémité postérieure (41), un décrochement de butée (45) auquel est associé au moins un mentonnet de butée (46), prévu à la face interne du carter (3).
  7. Distributeur selon l'une des revendications précédentes, caractérisé par le fait que le corps de compartiment doseur (38) est formé uniquement par l'enveloppe (40) de la chambre, revêtant de préférence la forme d'une douille et ouverte, à l'extrémité postérieure et/ou antérieure (41, 42), au moins sur la largeur de la piste de glissement (53) du piston.
  8. Distributeur selon l'une des revendications précédentes, caractérisé par le fait que la position extrême de la course de pompage du piston de pompage (10) est fermement arrêtée par butée vis-à-vis du carter (3) avec, de préférence, la présence d'une bague de butée (61) qui fait saillie vers le piston de pompage (10) sur la paroi transversale (5) dudit carter (3), et à laquelle est associé un décrochement de butée (62) prévu, à la face interne du piston de pompage (10), dans la région de la base (58) de la lèvre (56, 57) dudit piston.
  9. Distributeur selon l'une des revendications précédentes, caractérisé par le fait qu'un canal de sortie (60), ouvert en direction de la chambre de pompage (59), parcourt le piston de pompage (10) vers l'orifice de distribution (20), en particulier au moins partiellement une tige tubulaire (9) qui est ménagée d'une seule pièce avec ledit piston de pompage (10) et dont l'extrémité, tournée à l'opposé de ce piston de pompage (10), est reliée à une tête d'actionnement (15) percée de l'orifice de distribution (20) et destinée à la pompe (8) à piston refouleur.
  10. Distributeur selon l'une des revendications précédentes, caractérisé par le fait que le carter (3) est réalisé, au moins partiellement, sous la forme d'un réservoir (31) de matière qui est ouvert vers le corps de compartiment doseur (38), par l'intermédiaire de l'admission (39) de matière, et dans lequel, de préférence, ledit corps de compartiment doseur (38) est intégralement logé à l'intérieur de la chambre d'accumulation (32), et/ou est agencé à peu près coaxialement ; et par le fait que, de préférence, la chambre d'accumulation (32) du carter (3) est pour l'essentiel prévue derrière l'extrémité postérieure (41) du corps de compartiment doseur (38) et, à partir de cette chambre d'accumulation (32), un passage (52) de matière longe le pourtour extérieur (43) du corps de compartiment doseur (38), pour gagner son admission (39) de matière, prévue dans la région d'une paroi de fond (5) dudit carter (3), ledit passage étant notamment formé par un intervalle compris entre le pourtour extérieur (43) du corps de compartiment doseur (38), et la surface intérieure (29) du carter (3).
  11. Distributeur selon la revendication 10, caractérisé par le fait que l'extrémité de la chambre d'accumulation (32), éloignée de l'admission (39) de matière, est délimitée par un plongeur (23) qui se déplace au fur et à mesure de la diminution du volume de matière renfermé et est guidé, par des lèvres d'étanchement (24, 25, 27, 28), notamment sur la surface intérieure (29) du carter (3) et/ou sur la surface extérieure de la tige (9) du piston ; et par le fait qu'il est de préférence prévu un canal de ventilation (34) qui débouche dans l'espace vide (33) derrière le plongeur (23), est en particulier fermé lorsque le piston de pompage (10) occupe une position de départ (figure 2) et est formé, sur le tronçon (11) de la tige (9) du piston, prévu sur la tête d'actionnement (15), par au moins une rainure longitudinale (35) située intégralement à l'extérieur de l'espace vide (33) dans la position de départ (figure 2).
  12. Distributeur selon l'une des revendications précédentes, caractérisé par le fait que le corps de compartiment doseur (38) est directement monté sur le carter (3) et est de préférence guidé, par son pourtour extérieur (43), sur des membrures longitudinales (44) dudit carter (3) qui fusionnent dans les mentonnets de butée (46).
  13. Distributeur selon l'une des revendications précédentes, caractérisé par le fait que la tige (9) du piston de pompage (10) sort, de manière étanche, du carter (3) qui présente de préférence, sur la paroi extrême correspondante (12) notamment formée par un capuchon de recouvrement (7) encastré avec étanchéité, une lèvre annulaire d'étanchement (13) qui est réalisée d'un seul tenant avec ladite paroi et est guidée sur le pourtour extérieur d'un tronçon (11) de la tige (9) du piston, prévu sur la tête d'actionnement (15).
  14. Distributeur selon l'une des revendications précédentes, caractérisé par une soupape de sortie à surpression (22) notamment logée, dans le canal de sortie (60), au voisinage direct de l'orifice de distribution (20), en particulier une soupape à bille chargée élastiquement et obturant hermétiquement le canal de sortie (60) en position de repos.
EP86111114A 1985-08-27 1986-08-12 Distributeur de matières coulantes Expired - Lifetime EP0213476B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3530486 1985-08-27
DE19853530486 DE3530486A1 (de) 1985-08-27 1985-08-27 Austragvorrichtung fuer fliessfaehige medien

Publications (3)

Publication Number Publication Date
EP0213476A2 EP0213476A2 (fr) 1987-03-11
EP0213476A3 EP0213476A3 (en) 1987-12-02
EP0213476B1 true EP0213476B1 (fr) 1991-09-18

Family

ID=6279404

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86111114A Expired - Lifetime EP0213476B1 (fr) 1985-08-27 1986-08-12 Distributeur de matières coulantes

Country Status (4)

Country Link
US (1) US4728008A (fr)
EP (1) EP0213476B1 (fr)
JP (1) JPH07102872B2 (fr)
DE (2) DE3530486A1 (fr)

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DE3521580A1 (de) * 1985-02-21 1986-08-21 Bayer Ag, 5090 Leverkusen Ausgabeeinrichtung fuer fliessfaehige medien
US4805809A (en) * 1988-03-14 1989-02-21 Owens-Illinois Closure Inc. Dispensing package for a viscous product
US4938392A (en) * 1988-11-29 1990-07-03 Su Cheng Yuan Anti-leakage structure for a liquid atomizer
JPH0280582U (fr) * 1988-12-05 1990-06-21
DE4005528C2 (de) * 1990-02-22 1998-01-15 Pfeiffer Erich Gmbh & Co Kg Austragvorrichtung für Medien
US5545481A (en) * 1992-02-14 1996-08-13 Hercules Incorporated Polyolefin fiber
US5449094A (en) * 1992-05-18 1995-09-12 Sofab Dispenser with plunging sleeve
FR2732742B1 (fr) * 1995-04-07 1997-05-30 Valois Ensemble de clapet d'admission.
GB9519346D0 (en) * 1995-09-22 1995-11-22 English Glass Company The Limi Dispensing systems
US5738250A (en) * 1997-04-07 1998-04-14 Calmar Inc. Liquid dispensing pump having water seal
JP3563014B2 (ja) * 2000-06-26 2004-09-08 株式会社トップ 吐出容器
DE50006973D1 (de) * 2000-10-19 2004-08-05 Dentaco Gmbh Dosierspender für fliessfähige Medien mit einer in einem Medienbehälter integrierten, handbetätigbaren Pumpe
US7261221B2 (en) * 2003-04-16 2007-08-28 Innovation And Design, Inc. Inverted dispensing system and apparatus
DE102008027987A1 (de) * 2008-03-04 2009-09-17 Kist-Europe Forschungsgesellschaft Mbh Dosierungsvorrichtung
DE102008039682A1 (de) * 2008-08-26 2010-03-11 Henkel Ag & Co. Kgaa Spender zur Bevorratung und Abgabe eines oxidativen kosmetischen Produkts
EP2177275A1 (fr) 2008-10-16 2010-04-21 Merz Pharma GmbH & Co. KGaA Distributeur à pompe pour le titrage de produits pharmaceutiques
DE202010011248U1 (de) * 2010-08-08 2011-09-01 Anton Brugger Dosierspender
US20120048894A1 (en) * 2010-08-25 2012-03-01 Francis Tatu Hand-operated pump
DE102010045059A1 (de) * 2010-09-10 2012-03-15 F. Holzer Gmbh Dosiervorrichtung
US8550131B1 (en) 2013-01-02 2013-10-08 Liquid Squeeze, LLC Liquid dispensing device, system and method
DE102018100338A1 (de) * 2018-01-09 2019-07-11 Aero Pump Gmbh Austragvorrichtung zum Austragen von flüssigen Medien
KR102015622B1 (ko) * 2018-02-05 2019-08-28 (주)연우 유체 용기

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GB1470597A (en) * 1974-08-21 1977-04-14 Sterling Winthrop Group Ltd Reciprocating pumps for dispensing pastes liquids and other substances
US4122982A (en) * 1976-03-16 1978-10-31 Coster Tecnologie Speciali S.P.A. Aerosol metering valve provided with pumping effect
DE2711795A1 (de) * 1977-03-18 1978-09-21 Lindal Gmbh Aerosol Tech Kolbenpumpe fuer die zerstaeubung eines fluids
JPS5815021Y2 (ja) * 1977-06-02 1983-03-25 株式会社三谷バルブ 手動噴霧器の噴射装置
FR2393279A1 (fr) * 1977-06-03 1978-12-29 Normos Norbert Dispositif de prelevement de doses precises et constantes de liquide
US4230242A (en) * 1979-03-26 1980-10-28 Philip Meshberg Triple seal valve member for an atomizing pump dispenser
DE3137760A1 (de) * 1981-09-23 1983-07-14 Bayer Ag, 5090 Leverkusen Vorrichtung zum dosieren von pastoesen stoffen
ZA826903B (en) * 1981-10-01 1984-04-25 Colgate Palmolive Co Dispenser for pressurized products
US4485943A (en) * 1982-03-08 1984-12-04 Joachim Czech Dispenser for liquids or pasty products
FR2546483B3 (fr) * 1983-05-24 1986-06-27 Aerosol Inventions Dev Distributeur-doseur manuel de substance fluide
DE3339180C2 (de) * 1983-10-28 1993-10-14 Pfeiffer Erich Gmbh & Co Kg Austragvorrichtung für Medien

Also Published As

Publication number Publication date
EP0213476A2 (fr) 1987-03-11
DE3681533D1 (de) 1991-10-24
JPH07102872B2 (ja) 1995-11-08
US4728008A (en) 1988-03-01
DE3530486A1 (de) 1987-03-05
JPS6252072A (ja) 1987-03-06
EP0213476A3 (en) 1987-12-02

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