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EP0193054B1 - Distributeur de substances susceptibles de couler - Google Patents

Distributeur de substances susceptibles de couler Download PDF

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Publication number
EP0193054B1
EP0193054B1 EP86101939A EP86101939A EP0193054B1 EP 0193054 B1 EP0193054 B1 EP 0193054B1 EP 86101939 A EP86101939 A EP 86101939A EP 86101939 A EP86101939 A EP 86101939A EP 0193054 B1 EP0193054 B1 EP 0193054B1
Authority
EP
European Patent Office
Prior art keywords
piston
filling
drag
reservoir
discharge pump
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
Application number
EP86101939A
Other languages
German (de)
English (en)
Other versions
EP0193054A1 (fr
Inventor
Karl-Heinz Fuchs
Lothar Graf
Heinz-Peter Forsbach
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.)
Bayer AG
Aptar Radolfzell GmbH
Original Assignee
Bayer AG
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 Bayer AG, Ing Erich Pfeiffer GmbH filed Critical Bayer AG
Priority to AT86101939T priority Critical patent/ATE48819T1/de
Publication of EP0193054A1 publication Critical patent/EP0193054A1/fr
Application granted granted Critical
Publication of EP0193054B1 publication Critical patent/EP0193054B1/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • B65D83/0005—Containers or packages provided with a piston or with a movable bottom or partition having approximately the same section as the container
    • B65D83/0033—Containers or packages provided with a piston or with a movable bottom or partition having approximately the same section as the container the piston being a follower-piston and the dispensing means comprising a hand-operated pressure-device at the opposite part of the container
    • 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
    • B05B11/0005—Components or details
    • B05B11/0097—Means for filling or refilling the sprayer
    • 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
    • B05B11/1061—Pump priming means

Definitions

  • the invention relates to a method for filling a dispensing device for flowable media, in particular pasteuse pharmaceutical or cosmetic preparations, and to such a dispensing device.
  • the filling space of a container closed at the bottom is to be filled and closed with the medium through a filling opening opposite the bottom while displacing the air therein, such that the filling space of the filled container is delimited by a drag piston inserted therein.
  • FR-A 2546483 has disclosed a method of this type in which the trailing piston is assembled with a discharge pump to form a structural unit and is inserted into the container after the container has been filled, as a result of which the filled container is closed on its side opposite the bottom.
  • the filling opening is thereby formed through the entire container opening, which has essentially the same width as the rest of the container.
  • the invention has for its object to provide a method of the type mentioned, which ensures a very clean and hygienic filling in a simple manner.
  • a method of the type described in the introduction provides for the filling to take place through an opening in the drag piston already inserted in the container.
  • the container space enclosed for filling is closed by the drag piston before or at the latest when filling begins at the associated end, except for a filling opening which is smaller than this.
  • the trailing piston does not need to be removed after filling, but closes the storage container at the end to be filled from the beginning until the device is emptied, so that there is no contamination with the medium or the associated hygienic problems in this area can.
  • the ventilation takes place through a ventilation opening which is separate from the filling opening and which is closed in particular immediately after completion of the filling or after all air inclusions have been expelled, the filling preferably passing through the drag piston, possibly through one inserted into the drag piston and is carried out with a riser pipe to be connected, in particular held in the actuation position.
  • the method according to the invention is suitable, for example, for the filling with, as well as the storage and discharge of anti-infectives, antifungal agents, anti-inflammatory agents and similar media. If the riser pipe or an assembly composed of the riser pipe and drag piston is inserted into the container before or at the same time as the filling begins and then the filling space is filled from the bottom upwards through the riser pipe, venting is made even easier.
  • the connection opening for a filling device is in the region of the outer end of the riser pipe, and after the filling, the riser pipe is to be connected to the discharge pump. If the riser pipe is to be installed on a discharge pump before it is inserted into the container or if the riser pipe is to be combined with the discharge pump to form an assembly that can be assembled, it is expedient if the filling is carried out with the aid of a filling nozzle of the filling device. After pulling out the filling mouthpiece from the trailing piston, the riser pipe can be used immediately.
  • the trailing piston while being filled under axial pressure, be latched against a position securing device, in particular essentially in a sealing manner, and, after filling, be moved over the position securing device onto a raceway.
  • the trailing piston assumes a precisely defined position during filling.
  • the container can first be filled without air inclusion, ie until the filled medium comes into contact with the associated end face of the drag piston, after which the drag piston, if necessary simultaneously with the assembly of the discharge pump or the Riser pipe, can be pressed into the container.
  • the invention further relates to a dispensing device for flowable media, in particular pasty pharmaceutical or cosmetic preparations, with a storage container receiving a discharge pump at the open end, which has a filling opening for its filling space in the area of this end facing away from a floor, for its limitation the opposite side of the floor is provided with a trailing piston which feeds to a running track and is assigned to an initial working position and which is penetrated by a riser pipe on which the trailing piston is guided in a sealed manner, the outer end of the riser pipe being provided for the line connection with a discharge opening of the discharge pump and a vent is associated with the container.
  • the invention has for its object to provide an output device of this type, which ensures a clean and hygienic filling in a simple manner.
  • the filling opening is delimited over its circumference or directly by the drag piston, as a result of which relatively large cross sections of the filling opening can also be achieved.
  • the trailing piston does not have a separate opening as the filling opening, which would have to be subsequently closed by an operation intended exclusively for this purpose, but if the filling opening is formed by the opening of the trailing piston provided for receiving the riser pipe.
  • this opening has sealing members and thus forms a connection piece for a filling mouthpiece of the filling device which is delimited by at least one sealing lip.
  • the trailing piston which is displaceably guided from the filling position into the working position on the container, has an overrun stop on its outer end face for a driving stop connected in particular to the riser pipe and / or to the discharge pump, and that the filled filling space is shorter than the filling space during filling by an amount corresponding to the associated driving stroke of the drag piston.
  • the drag piston is moved simultaneously with the assembly of the discharge pump and possibly the riser pipe by the predetermined driving stroke by direct mechanical action on the drag piston in the storage container.
  • the outlet channel of the discharge pump which may be closed by a valve in the rest position, is opened, for example, by holding the discharge pump in an actuation position at the end of the pump stroke, the medium displaced from the container can easily enter the riser pipe and finally climb into the discharge pump or its pump chamber.
  • the riser pipe is also used during this process, it is immersed in the stored medium and also displaces a corresponding volume from the container into the riser pipe or the discharge pump.
  • the free end of the riser pipe in particular conically, is tapered to a smaller width than the filling opening.
  • assembly is very simple if the driving stop forms a component with the container closure carrying the discharge pump and / or is formed in one piece with the riser pipe, the driving stop particularly in the open end of the container engaging driving cap for the system adjacent to the sealing members of the drag piston. This prevents the driving stop from touching any sealing element of the drag piston and possibly leading to damage.
  • the trailing piston can, for example, have a front end wall, which faces the container bottom, over the rear side of which the seal protrude organs, the stopper is expediently formed by the back of this end wall.
  • the design according to the invention also makes it possible to securely close the vent opening after filling without any special effort.
  • a structurally very simple design is obtained if the ventilation opening is connected to the outside of the dispensing device via a ventilation channel, which is preferably provided in a groove-like manner on the inner lateral surface of the open end section of the container and / or the inner end of which forms the ventilation opening.
  • the slide is formed by an annular sealing lip of the trailing piston, preferably its annular sealing lip which seals the storage space on the piston raceway and which, in particular, projects obliquely from the trailing piston against the trailing direction and / or is provided at the front piston end in the trailing direction.
  • This annular sealing lip can be made relatively short in cross section and with high rigidity, so that it ensures a precisely defined closing of the vent opening and no separate seal or the like has to be provided for this.
  • the trailing piston lies in the filling position in the region of a slightly enlarged container section in the internal cross section compared to the piston running surface, in particular up to the open end surface of the container, which preferably extends over an oblique annular shoulder into the piston raceway passes over and / or in the filling position forms a contact ring shoulder, in particular channeled through by the ventilation opening, for the front annular sealing lip of the drag piston in the towing direction.
  • the trailing piston can be used relatively smoothly up to the filling position, and the filling position is precisely determined by the ring shoulder, which acts like a stop.
  • the towing piston engages in the annular shoulder with an elastic member, namely the associated ring sealing lip, it results in the towing piston being fixed in the filling position in the manner of a spring catch, which can be overcome by a correspondingly high force acting on the towing piston, and then simultaneously Vent opening is closed.
  • the guiding and sealing of the drag piston with smooth running is significantly improved in that the, particularly ring-shaped, drag piston for guidance on the piston raceway and / or on the riser pipe has at least two annular sealing lips one behind the other, of which the rear, the riser pipe associated ring sealing lip can form the connection piece for the filling mouthpiece and can be provided on the inside with a further ring sealing lip for contacting the filling mouthpiece.
  • the annular sealing lips protrude obliquely towards the sealing surface in cross-section against the drag direction, i. H. that the ring sealing lips associated with the piston raceway are flared backwards and the ring sealing lips associated with the riser pipe are tapered towards the rear in the shape of a truncated cone.
  • the design according to the invention is particularly suitable for dispensing devices in which the discharge pump is designed as a piston pump, which preferably has a check valve, such as a ball valve, between the pump piston and the riser pipe.
  • the discharge pump can also be kept in its actuated state in a simple manner during assembly.
  • Some media tend, for example by creeping, to move in the finest traces between the piston and its raceway and thereby form a kind of bridge between both sides of the piston. This can be the case, for example, with fatty media, such as ointment-like preparations.
  • fatty media such as ointment-like preparations.
  • the empty space of the container above the trailing piston is sealed from the atmosphere when the discharge pump is at rest, so that any traces of the medium that get into this space are also sealed off from the outside in a sterile manner .
  • the housing of the discharge pump is inserted into the container in a sealed manner, preferably with an annular flange provided on its housing, is blown into an inner groove of a container closure sealed with the container, the discharge pump also being provided with an air compensation that is sealed in its rest position.
  • Air balance for the empty space goes with the interposition of a valve that is inevitably closed when the discharge pump is at rest, only through the discharge pump, so that when the discharge unit is in the rest position and thus in the storage state, the empty space is hermetically sealed twice from the atmosphere, namely once by the sealed connection of the pump housing to the container and to others through the closed air balance.
  • the discharge pump can be hygienically installed together with the, for example, cap-shaped container closure in one assembly on the filled base part of the container.
  • the design according to the invention also makes it possible to design the dispensing device in a simple manner in such a way that it can be practically completely emptied, including the riser pipe and the discharge pump.
  • This can be achieved in an advantageous manner, for example, in that at least one ventilation duct for the riser pipe, which is provided in particular on the outer circumference of the riser pipe, emanates from the floor level of the container and which, when the trailing piston is at the bottom end position, releases a ventilation connection from the empty space of the container to the inner end of the riser pipe and its end facing away from the floor, preferably shortly before reaching this end position, overflowed in the manner of a slide control by the associated annular sealing lip of the drag piston.
  • the riser pipe including the pump chamber can still be completely emptied by further actuation of the discharge pump, because the lower end of the riser pipe is connected to ventilation by this design.
  • the design of the dispensing device according to the invention enables both a precisely metered dispensing of media and the dispensing of relatively highly viscous media, which ensures a very versatile application of the device.
  • This advantage is achieved in a surprisingly simple manner, in particular when the dispensing device consists of an atomizer pump known per se and a storage container with drag or climbing pistons, since the action of the climbing piston thus supports the suction behavior of the discharge pump and the flow behavior of the medium that with an atomizer pump that is not suitable for highly viscous media, but rather for low-viscosity media, it is possible to dispense media with a relatively high viscosity that can be repeatedly and precisely metered.
  • an output device 1 has, for example, a substantially cylindrical storage container 2, which is closed at one end with a bottom 4 formed in one piece with it and at the other end 5 with a cap-like or sleeve-like container closure 3 is, which rests with an annular shoulder on the associated end face of the container 2 and engages centered in the open end 5 of the container 2 with a connecting sleeve 6 projecting over this annular shoulder.
  • a discharge pump 8 lying coaxially with the container closure 3 and the container 2 with an annular flange 9 formed by its housing is blown in from below and thereby secured and fastened both radially and axially.
  • the end of the discharge pump 8 facing the bottom 4 is part of a plug-in connection 10, via which a discharge pipe 11 is connected to the discharge pump 8, which is located coaxially with the latter and which extends close to the bottom 4.
  • a trailing piston 12 is guided on the riser pipe 11, both opposite the inner circumferential surface of the container 2 and in relation to the outer circumferential surface of the riser 11 can be moved in a sealed manner.
  • the discharge pump 8 has, on a pump plunger 13 protruding beyond the outer end of its housing, an actuating head 14 which is guided in the container closure 3 and is provided with a radially projecting discharge spout which delimits the discharge opening 15 of the dispensing device.
  • the container 2 with its section of its inner surface adjoining the flat inner surface of the bottom 4 and extending over most of its length, forms a raceway 16 for the trailing piston 12. At its end facing away from the bottom 4, it runs over a 45 ° -like manner.
  • Chamfer formed oblique ring shoulder 17 in a slightly enlarged inside section container section 18, which extends essentially to the open end face 19 of the container 2. Adjacent to this end face 19, the inner surface of the container section 18 is narrowed only by two annular beads 20, 21 which are partially circular in cross section, the inside width of the container in the area of these annular beads being the same, larger or at most slightly smaller than in the area of the raceway 16.
  • the connecting sleeve 6 of the container closure 3 has, on the outer circumference, complementary annular grooves for the engagement of the annular beads 20, 21, which are arranged such that when the ring shoulder of the container closure 3 adjoining the connecting sleeve 6 rests on the end face 19 in a clip-like manner, locking and positive locking and sealing engage in the annular beads 20, 21.
  • Provided in the inner surface of the container section 18 are a plurality of axially groove-shaped ventilation channels 23 distributed uniformly around the central axis 22 of the container 2, each of which passes from the end face 19 to the annular shoulder 17 and in which there is a recessed and therefore both the annular shoulder 17 and the raceway 16 form at the associated end penetrating vent 24.
  • the vent channels 23 are sealed to the outside when the container closure 3 is attached.
  • the essentially ring-shaped trailing piston 12 which has an approximately U-shaped cross-section in axial section on each side of its central axis 22 with profile legs directed away from the bottom 4, is formed at its end facing the bottom 4 by a substantially flat, annular disk-shaped end wall 25; From their end face facing away from the bottom 4, four ring sealing lips 25 to 29 protrude. Two ring sealing lips are provided for the sealed sliding on the raceway 16 and two ring sealing lips 28, 29 for the sealed sliding on the essentially cylindrical outer circumference of the riser pipe 11.
  • the two annular sealing lips 26, 28 which protrude less than or away from the bottom 4 of the end wall 25, or which lie substantially approximately in the region of the thickness of the end wall 25, have only a very small lip length in cross section and are approximately at 45 ° to the central axis 22 inclined in such a way that they rest relatively hard resiliently on the associated running surfaces.
  • the installation of these two annular sealing lips takes place almost in the same plane perpendicular to the central axis 22.
  • the two other annular sealing lips 27, 29, which are also tapered at an acute angle to their free ends, are inclined at substantially smaller angles to the associated running surfaces, such that the annular sealing lip 27 associated with the raceway 16 widens conically at an acute angle to its free end surface and the other annular sealing lip 29 is tapered at an acute angle.
  • the free end faces of these two ring sealing lips and thus their contact zones on the associated running surfaces lie axially behind those of the ring sealing lips 26, 28 and in a common plane perpendicular to the central axis 22.
  • the distance between the inner annular bead 21 and the annular shoulder 17 is greater than the distance between the contact surface of the annular sealing lip 26 associated with the annular shoulder 17 and the rear end face of the annular sealing lip 27; 3, the rear end face is at a short distance from the inner annular bead 21 at least.
  • the flank of the annular sealing lip 26 facing the bottom 4 is formed by a frustoconical centering surface 30 on the circumference of the drag piston 12, which is from the bottom 4 facing end face of the end wall 25 extends to the free end face of the sealing lip 26 in the manner of a chamfer and expediently has the same flank angle as the annular shoulder 17.
  • the outer diameter of the annular sealing lip 26 is almost the same as the inner diameter of the container section 18, so that the trailing piston 12, although centered in the arrangement according to FIG. 3, engages in the container 2 essentially radially without stress and under axial pressure against the annular shoulder 17 can rest on this with the annular sealing lip 26 essentially sealingly.
  • the rear end face of the end wall 25 of the trailing piston 12 facing away from the floor 4 forms with its annular zone between the two annular sealing lips 27, 29 a run-up stop 31 for a driving stop 32.
  • the driving stop 32 is an assembly with the discharge pump 8 and / or the container closure 3 summarized and formed in one piece with the riser 11 in the illustrated embodiment; it is formed by the end of the jacket of a driving cap 33 of the riser pipe 11 facing the bottom 4 or the inner end of the riser pipe 11. Its end wall lies in the plane of the outer end of the riser tube 11, which is formed, for example, by a plastic injection-molded part, and merges in one piece into this end.
  • the inner length of the jacket of the driving cap 33 is the same size or at least slightly larger than the distance between the overrun stop 31 and the free end of the annular sealing lip 29, so that there is no fear of pressure or compression of the annular sealing lip 29 by the end wall of the driving cap 33 when the driving stop 32 bears against the run-up stop 31.
  • the plug connection 10 between the discharge pump 8 and the riser pipe 11 also extends approximately over the length of the driving cap 33.
  • the end of the housing of the discharge pump 8 facing the bottom 4 is reduced in diameter by a sleeve-shaped one, compared to the rest of the discharge pump 8, and to its free end slightly tapered connecting link 34 is formed, which delimits the inlet channel of the discharge pump 8.
  • the complementary, also sleeve-shaped connecting member 35 of the riser pipe 11 is formed by its end section 36, which tightly encloses the connecting member 34 on the outer circumference, and by an inner sleeve 37 lying coaxially therewith, which engages in a sealed manner into the interior of the connecting member 34, so that the connecting members 34, 35 there is a frictional, but extremely firm connection.
  • the trailing piston 12 is inserted into the container 2 so far that its outer annular sealing lip 26, which is in the direction of the arrow 39 in the trailing direction, rests on the annular shoulder 17 with the flank associated with the centering surface 30, in such a way that the radially outer one Ring sealing lips 26, 27 with their actual sealing edges only bear against the inner lateral surface 40 of the container section 18 and have not yet been transferred to the raceway 16. Since the riser pipe 11 or the discharge pump 8 has not yet been inserted into the trailing piston 12, the radially inner annular sealing lips 29, 28 of the trailing piston 12 can be used as a connecting piece 41 for a filling mouthpiece 42 indicated by dash-dotted lines in FIG. H. that the annular sealing lips 29, 28 limit a filling opening 43.
  • the filling nozzle 42 expediently engages only so far in the annular sealing lips 29, 28 that its front end does not protrude beyond the front piston end 44 facing the bottom 4. In this state, the filling space 38 is connected to the vent opening 24. When the medium to be filled into the container 2 is pressed in through the filling mouthpiece 42, the air can thus escape from the filling space 38 through the ventilation channels 23 until the filling space 38 is completely filled from the bottom 4 to the trailing piston 12 without air being trapped. It is conceivable to design the filling mouthpiece 42 so long that its end lies near the bottom 4 at the beginning of the filling and is drawn outwards with increasing filling while the drag piston 12 is at a standstill.
  • the filling mouthpiece 42 is pulled out of the trailing piston 12 or the connecting piece 41.
  • the towing piston 12 is not moved relative to the container 2, which is relatively simple since the towing piston 12 is now secured in its position relative to the container 2 by the filling.
  • the preassembled assembly consisting of the riser pipe 11, the discharge pump 8 and the container closure 3 is inserted into the open end of the container 2, the inner, conically tapered end 45 of the riser pipe 11 being first inserted into the annular sealing lip 29 , 28 is inserted until the driving stop 32 abuts the overrun stop 31 of the drag piston 12; here the container closure 3 has not yet reached its final assembly position relative to the container 2.
  • the driving stop 32 takes the drag piston 12 with it by a predetermined driving stroke 46 such that the annular sealing lip 26 jumps over the annular shoulder 17, reaches the raceway 16 and at the same time closes the ventilation openings 24 from the interior of the container .
  • the container closure 3 is in its final assembly position relative to the container 2 and the trailing piston 12 according to FIG. 1 in its starting working position, ie the storage space 47 is now defined in the container 2.
  • the discharge pump 8 is designed as a piston pump which, between the pump piston 56 and the riser pipe 11, has a check valve 48 which opens to the discharge opening 15 and which is located directly adjacent to the connecting member 34 in the housing 49 of the discharge pump 8.
  • the housing 49 of the discharge pump 8 forms a cylinder with a piston race 55 for a pump piston 56, which together with the pump plunger 13 represents a piston unit.
  • the pump piston 56 which is guided on the piston raceway 55 with a conically enlarged piston lip, delimits a pump chamber 58 with the cylinder and the suction valve formed, for example, by the check valve 48 Exhaust valve through the pump plunger 13 to the discharge opening 15.
  • the valve body of the exhaust valve is expediently formed in one piece with the pump piston 56 and has, for example, an annular bead located at a distance behind its piston lip on the inner circumference, which in the closed position of the exhaust valve on an annular valve seat Pump plunger 13 is present.
  • the pump piston 56 is formed in one piece with a piston neck 59, which surrounds the pump plunger 13 in a sealed manner and can itself be compressed in a resilient manner under axial pressure load.
  • the piston raceway 55 ends in an inner annular shoulder 57, against which the associated end of the pump piston 56 runs at the end of the pump stroke; Beyond this position, the pump plunger 13 can be moved a little further relative to the cylinder, so that the pump piston 56, which is fixed relative to the cylinder by the annular shoulder 57, moves upward relative to the pump plunger 13 under axial compression of the piston neck 59, and the valve body of the pump piston 56 is lifted off the valve seat.
  • the outlet valve is opened, which is closed again after the pump plunger 13 has been moved back by the valve closing path at the beginning of the return stroke by the resilient force of the piston neck 59.
  • the outer or upper end of the housing 49 of the discharge pump 8 is closed with a cylinder cover 60, which forms the annular flange 9 projecting over its outer circumference adjacent to its lower end face and has a through opening for the piston unit or the pump plunger 13 located in the pump axis.
  • the annular gap between this through opening and the piston unit forms part of a connection provided as air compensation 61 between the atmosphere and the interior of the housing 49 separated from the pump chamber 58 by the pump piston 56, the interior above the pump chamber 58 between the cylinder cover 60 and the piston lip of the pump piston 56 lies.
  • This space is connected through an opening 62 in the housing 49 to the empty space 51 of the entire container which lies above the drag piston 12 and surrounds the discharge pump 8.
  • an air compensation valve 63 which is positively closed when the discharge pump 8 is at rest is provided in the air compensation 61 is open during the pumping stroke and the return stroke of the pump piston 56.
  • This air balancing valve 63 has a valve body 64 which is formed in one piece with the pump piston 56 or the piston neck 59 and tapered upwards in the shape of a truncated cone, to which the valve seat 65 is assigned the lower end of an inner sleeve of the cylinder cover 60 which delimits the passage opening and which is in the housing 49 intervenes.
  • valve body 64 hermetically seals against the valve seat 65 under the force of a return spring, not shown, which acts on the piston unit and is arranged, for example, in the pump axis in the housing 49 or in the pump chamber 58, as a result of which the rest position of the piston unit is also ensured Stop is set.
  • a return spring not shown
  • an air compensation opening for the empty space 51 could also be provided directly in the wall of the entire container, for example in the container 2 or in the container closure 3, which would be constantly open, but would then be a sterile closure the empty space 51 is not possible.
  • the discharge pump 8 described represents a type of atomizer pump which, in particular as a result of the described outlet valve, operates with a relatively high pump pressure.
  • four ventilation channels 50 distributed uniformly over the circumference, in the form of axial grooves of the same length are provided on the outer circumference of the inner end section of the riser pipe, which extend to the associated free end of the riser pipe 11.
  • the medium still located in the riser pipe 11 or in the pump chamber of the discharge pump 8 can be discharged through the discharge opening 15 by further actuation of the discharge pump 8 until the riser pipe 11 and the discharge pump 8 are also substantially completely emptied.
  • the spacer 54 which is smaller than the clear cross section of the riser pipe 11 in the axial view according to FIG. 2, is formed in the exemplary embodiment shown by a web lying diametrically to the riser pipe 11.
  • FIGS. 4 to 8 the same reference numerals as in FIGS. 1 to 3, but with the index “a”, are used for corresponding parts.
  • the driving stop 32a is formed directly by the container closure 3a, namely by the end of its connecting sleeve 6a.
  • the arrangement can be such that the driving stop 32a does not act outside the sealing elements of the drag piston 12a, but on the rear end face of the drag piston 12a, which is formed by the radially outer rear annular sealing lip 27a, in such a way that its rear end face touches the run-up stop 31 a forms and the riser 11 a at the rear end requires no special training.
  • This embodiment is particularly expedient when the annular sealing lip 27a ver is dimensioned relatively strong and therefore there is no need to fear damage from the transport system.
  • the filling space 38a can also be filled directly by the drag piston 12a.
  • the filling can also be carried out through the riser pipe 11, i.e., before the filling piston 12a, the riser pipe 11a is also inserted into the container 2a before the filling.
  • the outer end of the riser pipe 11 forms the filling opening 43 or the connecting piece 41 for the filling mouth piece 42a, indicated by dash-dotted lines.
  • the assembly consisting of the container closure 3a and the discharge pump 8a is assembled in the manner described, the connecting member 34a of the discharge pump 8a being telescopically connected to the connecting member 35a of the riser pipe 11a and the trailing piston 12a via the driving stroke 46a into it 5 working position is taken.
  • the output device is ready for operation, i. This means that a precisely metered amount of medium is discharged with the first pump stroke without empty strokes.
  • FIG. 8 shows the lower end position of the drag piston 12a, in which the rear ends 52a of the ventilation channels 50a are released by the associated ring sealing lip 29a of the drag piston 12a in the manner of a slide control.
  • the air permeability desired for ventilation in this position between the outer circumference of the riser pipe and the drag piston can also be achieved by a suitable surface quality at the lower end of the riser pipe, so that separate groove-shaped ventilation channels are not required.
  • this surface in the area of the free end of the riser pipe can be designed so rough or with grooves that a large number of labyrinth-like or capillary-like air passages are created between it and the associated annular sealing lip of the drag piston on the last section of the piston path.
  • the same reference numerals are used for corresponding parts as in the previous figures, but with the index “b”.
  • the ventilation channels 23b do not go as far as the open end surface 19b of the container 2b, but they are designed as pocket-shaped depressions in the inner surface of the container 2b which extend in a groove-like manner and extend from the piston raceway 16b into the inner lateral surface 40b of the container section 18b.
  • the ventilation channels 23b end on the side facing away from the open end face 19b of the annular beads 20b, 21b, which form sealing elements in cooperation with the container closure, and which are not continuously closed over their circumference, but are provided with depressions or interruptions, each of which, for example, extends of the associated ventilation duct 22b parallel to the central axis 22b.
  • the container closure When the container closure is fitted, it engages in the annular groove delimited by the two annular beads 20b, 21 with an annular part that is continuously closed over the circumference and is provided on the outer circumference of the connecting sleeve of the container closure between the grooves, which is used for the engagement of the annular beads 20b, 21b are determined.
  • the ventilation channels 24b are not sealed to the outside by the container closure in the region of the open end surface 19b, as in the embodiment according to FIGS. 1 to 3, but are closed by a seal lying in the region of the lateral surfaces when the container closure is attached, which both can have radial as well as axial sealing pressure and thereby enables a particularly hermetic seal.
  • the maximum storage time of the filled device can be significantly extended without the risk of the contents spoiling. It is also conceivable to provide the connecting sleeve of the container closure on the outer circumference with projections which engage in a direct sealing manner in the ventilation channels.
  • the airtight seal between the container closure and the container should be designed so that it can withstand an overpressure of at least 0.5 bar.
  • the transition between the piston raceway 16b and the inner surface of the bottom 4b to the centering surface 30 of the trailing piston is frustoconical in such a way that the trailing piston lies in its lower end position essentially without gaps with its centering surface on this transition surface and between the Trailing piston and the container practically no cavity remains.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Reciprocating Pumps (AREA)
  • Basic Packing Technique (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Vending Machines For Individual Products (AREA)

Claims (20)

1. Procédé pour remplir un dispensateur (1) pour produits fluides et, en particulier, pour préparations pâteuses pharmaceutiques ou cosmétiques, dans lequel l'enceinte de remplissage (38) d'un récipient (2) fermé du côté du fond, est remplie de produit par un orifice de remplissage (43) opposé au fond (4) en refoulant l'air qui y est contenu et est fermée de façon à ce que l'enceinte de remplissage du récipient rempli soit délimitée par un piston mobile (12) qui y est inséré, caractérisé en ce que le remplissage est réalisé à travers un orifice dans le piston mobile déjà inséré dans le récipient.
2. Procédé selon la revendication 1, caractérisé en ce que l'élimination de l'air est réalisée à travers un orifice d'évacuation de l'air (43), séparé de l'orifice de remplisssage (24), cet orifice étant fermé, en particulier immédiatement après l'achèvement du remplissage, ou après l'élimination de toutes les inclusions d'air, le remplissage étant effectué de préférence à travers un tube montant (11), inséré dans le piston mobile et à connecter à une pompe d'extraction (8) maintenue en particulier en position de fonctionnement.
3. Procédé selon la revendication 1 ou 2, caractérisé en ce que le piston mobile (12) prend appui pendant le remplissage sous pression axiale et avec emboîtement contre une butée de positionnement, celle-ci pouvant, en particulier, assurer l'étanchéité, le piston étant déplacé sur une glissière (16) s'écartant de la butée de positionnement après le remplissage.
4. Dispensateur (1) pour produits fluides et, en particulier, pour préparations pâteuses, pharmaceutiques ou cosmétiques, avec un récipient d'alimentation (2) portant, à son extrémité ouverte, une pompe d'extraction (8), ledit récipient présentant, dans la zone de son extrémité opposée au fond (4), un orifice de remplissage (43) pour son enceinte de remplissage (38) dont la délimitation sur le côté opposé au fond (4) est prévue au moyen d'un piston mobile (12) correspondant à une position de travail de départ (fig. 1) et à guider sur une surface de glissement (16), ce piston étant traversé par un tube montant (11) sur lequel le piston mobile (12) est guidé de manière étanche, tandis que l'extrémité extérieure du tube montant (11) est pourvue pour assurer la connexion d'un orifice d'extraction (15) de la pompe d'extraction (8) et qu'un orifice d'évacuation de l'air (24) est prévu pour le récipient (2) caractérisé en ce que, pour une position de remplissage du piston mobile (12), présentant l'orifice de remplissage (43), il est prévu une butée de positionnement amovible vis à vis du récipient (2).
5. Dispositif selon l'une des revendications 4, caractérisé en ce que l'orifice de remplissage (43) est délimité sur sa périphérie par le piston mobile (12) et, de préférence, par l'orifice du piston mobile prévu pour recevoir le tube montant (11) et/ ou une pièce de raccordement (41) délimitée par au moins une lèvre d'étanchéité (29, 28) pour une trémie de remplissage (42).
6. Dispositif selon la revendication 4 ou 5, caractérisé en ce que l'orifice d'évacuation de l'air (24) peut être fermé par le déplacement du piston mobile (12) depuis la position de remplissage (fig.3) vers la position de travail de sortie (fig. 1) et, en particulier, par le piston mobile (12).
7. Dispositif selon l'une des revendications 4 à 6, caractérisé en ce que le piston mobile (12), guidé de manière à pouvoir se déplacer d'une position de remplissage (fig. 3), jusqu'à une position de travail (fig. 1) dans le récipient (2), présente, sur sa face frontale extérieure, une butée d'appui (31) pour une butée d'entraînement (32) reliée en particulier au tube montant (11) et/ou à la pompe d'extraction (8) et que l'enceinte de remplissage remplie (47) est plus courte que l'enceinte de remplissage (38) au moment du remplissage dans une mesure correspondant à la course d'entraînement (46) du piston mobile (12).
8. Dispositif selon l'une des revendications 4 à 7, caractérisé en ce que l'enceinte de remplissage (47) ainsi qu'également, de préférence, le tube montant (11) et la chambre de pompe (58) de la pompe d'extraction (8) sont remplis complètement du produit après le remplissage.
9. Dispositif selon l'une des revendications 4 à 8, caractérisé en ce que le remplissage de la chambre de pompe (58) de la pompe d'extraction (8) et, éventuellement du tube montant (11) est assuré par un déplacement du piston mobile (12), qui a lieu à la suite du remplissage de l'enceinte de remplissage (47) tandis que, de préférence, le volume déplacé correspondant à la course d'entraînement (46) du piston mobile (12) est, au moins approximativement, égal au volume de la contenance de la chambre de pompe (58) et, éventuellement, du tube montant (11).
10. Dispositif selon l'une des revendications 4 à 9, caractérisé en ce que l'extrémité libre (45) du tube montant (11), présente un rétrécissement, en particulier de forme conique, avec un diamètre plus petit que celui de l'orifice de remplissage (43) et que la butée d'entraînement (32) forme, de préférence, un élément constructif avec la fermeture de récipient (3) portant la pompe d'extraction (8) et/ou réalisé d'une pièce avec le tube montant (11), tandis que la butée d'entraînement (32) présente, en particulier, un capuchon d'entraînement (33) s'engageant dans l'extrémité ouverte (5) du récipient (2) pour assurer l'appui à proximité des organes d'étanchéité (26, 27, 28, 29) du piston mobile (12).
11. Dispositif selon l'une des revendications 4 à 10, caractérisé en ce que l'orifice d'évacuation de l'air (24) peut être fermé avec commande par vanne, par rapport à l'enceinte de remplissage (47) tandis que, de préférence, le piston mobile (12) forme la vanne qui dégage l'orifice d'évacuation d'air (24) en position de remplissage (fig. 3) et qui la ferme en position de travail (fig. 1 ).
12. Dispositif selon l'une des revendications 4 à 11, caractérisé en ce que l'orifice d'évacuation de l'air (24b) est relié à la face extérieure du dispositif par l'intermédiaire d'un canal d'évacuation d'air (23b) qui est prévu, en particulier, en forme de poche dans la surface périphérique intérieure (40b) de la section terminale ouverte (18b) du récipient (2b) dont l'extrémité intérieure forme l'orifice d'évacuation d'air (24b) et qui est précédé, de préférence, du côté de la sortie par une étanchéité entre le récipient et la fermeture de récipient.
13. Dispositif selon la revendication 11 ou 12, caractérisé en ce que la vanne est constituée par une lèvre d'étanchéité annulaire (26) du piston mobile (12) et de préférence, par la lèvre d'étanchéité annulaire (26), rendant étanche l'enceinte de remplissage (47) de celui-ci, par rapport à la surface de glissement du piston (16), cette lèvre s'écartant obliquement du piston mobile (12) et, en particulier, en sens opposé à la direction de déplacement (flèche 39) et/ou est prévue à l'extrémité antérieure du piston (44) en direction de déplacement (flèche 39).
14. Dispositif selon l'une des revendications 4 à 13, caractérisé en ce que le piston mobile (12) se trouve en position de remplissage (fig. 3) dans la zone d'une section du récipient (18) s'étendant, en particulier, jusqu'à la surface terminale ouverte (19) du récipient (2) et avec section intérieure légèrement élargie par rapport à la surface de glissement du piston (16), cette section se continuant par la surface de glissement du piston (16), de préférence par un épaulement annulaire (17) formant une butée de position oblique correspondant, en particulier, à une surface de centrage (30) du piston mobile (12) et/ou en position de remplissage (fig.3), un épaulement annulaire d'appui (17) traversé, en particulier en forme de rainure, par l'orifice d'évacuation d'air (24) pour la lèvre d'étanchéité annulaire antérieure (26) en direction de déplacement (flèche 39) du piston mobile (12).
15. Dispositif selon l'une des revendications 4 à 14, caractérisé en ce que le piston mobile (12), en particulier en forme de ventouse annulaire, présente pour le guidage sur la surface de glissement du piston (16) et/ou sur le tube montant (11) chaque fois au moins deux lèvres d'étanchéité annulaire (26, 27; 28, 29) disposées l'une derrière l'autre, qui s'étendent de préférence obliquement par rapport à la surface d'étanchéité et en section à l'encontre de la direction de déplacement (flèche 39) et/ou dont au moins la lèvre d'étanchéité annulaire postérieur (29) correspondant au tube montant (11) forme la pièce de raccord (41) pour la trémie de remplissage (42).
16. Dispositif selon l'une des revendications 4 à 15, caractérisé en ce que l'extrémité extérieure du tube du montant (11) forme pour le raccordement de la pompe d'extraction (8), un élément d'assemblage (35) d'un assemblage de conduite (10) en particulier de type télescopique, qui est formé en particulier par deux douilles emboîtables, tandis que l'élément d'assemblage (35) du tube montant (11) est formé, de préférence par la section terminale et dépassant extérieurement l'élément d'assemblage (34) de la pompe d'extraction (8) et/ou une douille intérieure (37) s'engageant dans l'élément d'assemblage (34) de la pompe d'extraction (8).
17. Dispositif selon l'une des revendications 4 à 16, caractérisé en ce que la pompe d'extraction (8) se présente sous forme d'une pompe à piston, qui présente, de préférence, un clapet anti-retour (48) tel qu'un clapet à bille, situé entre le piston de pompe et le tube montant (11 ).
18. Dispositif selon l'une des revendications 4 à 17, caractérisé en ce que l'espace vide (51) du récipient au-dessus du piston mobile (12) est fermé hermétiquement par rapport à l'atmosphère en position de repos de la pompe d'extraction (8).
19. Dispositif selon l'une des revendications 4 à 18, caractérisé en ce que le corps (49) de la pompe d'extraction (8) est disposé de manière étanche dans le récipient, de préférence avec une bride annulaire (9) prévue sur son corps (49) dans une rainure intérieure (7) d'une fermeture de récipient (3) reliée de manière étanche au récipient (2) et que la pompe d'extraction (8) est pourvue d'un dispositif d'équilibrage de l'air (61) fermé hermétiquement dans sa position de repos.
20. Dispositif selon l'une des revendications 4 à 19, caractérisé en ce qu'il est constitué d'une pompe de pulvérisation (8) connue en soi et d'un récipient d'alimentation (2) avec piston mobile ou grimpant (12).
EP86101939A 1985-02-21 1986-02-15 Distributeur de substances susceptibles de couler Expired EP0193054B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86101939T ATE48819T1 (de) 1985-02-21 1986-02-15 Ausgabeeinrichtung fuer fliessfaehige medien.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3505911 1985-02-21
DE3505911 1985-02-21
DE3521580 1985-06-15
DE19853521580 DE3521580A1 (de) 1985-02-21 1985-06-15 Ausgabeeinrichtung fuer fliessfaehige medien

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EP0193054A1 EP0193054A1 (fr) 1986-09-03
EP0193054B1 true EP0193054B1 (fr) 1989-12-20

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US (1) US4817829A (fr)
EP (1) EP0193054B1 (fr)
AU (1) AU596960B2 (fr)
CA (1) CA1294252C (fr)
DE (2) DE3521580A1 (fr)
DK (1) DK162277C (fr)
ES (1) ES8707852A1 (fr)
NO (1) NO165996C (fr)

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Also Published As

Publication number Publication date
NO165996B (no) 1991-02-04
DK79086A (da) 1986-08-22
AU5366486A (en) 1986-08-28
US4817829A (en) 1989-04-04
CA1294252C (fr) 1992-01-14
ES552235A0 (es) 1987-09-01
NO165996C (no) 1991-05-15
DK162277B (da) 1991-10-07
DK79086D0 (da) 1986-02-20
DE3521580A1 (de) 1986-08-21
DK162277C (da) 1992-03-02
DE3667648D1 (de) 1990-01-25
AU596960B2 (en) 1990-05-24
NO860504L (no) 1986-08-22
ES8707852A1 (es) 1987-09-01
EP0193054A1 (fr) 1986-09-03

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