EP2844397B1 - Dispensing unit - Google Patents

Dispensing unit Download PDF

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Publication number
EP2844397B1
EP2844397B1 EP13728922.9A EP13728922A EP2844397B1 EP 2844397 B1 EP2844397 B1 EP 2844397B1 EP 13728922 A EP13728922 A EP 13728922A EP 2844397 B1 EP2844397 B1 EP 2844397B1
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EP
European Patent Office
Prior art keywords
valve
valve body
metering pump
delivery unit
unit according
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EP13728922.9A
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German (de)
French (fr)
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EP2844397A2 (en
Inventor
Hans Georg Hagleitner
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Individual
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Priority to SI201330114T priority Critical patent/SI2844397T1/en
Priority to PL13728922T priority patent/PL2844397T3/en
Priority to HRP20160029TT priority patent/HRP20160029T1/en
Publication of EP2844397A2 publication Critical patent/EP2844397A2/en
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Publication of EP2844397B1 publication Critical patent/EP2844397B1/en
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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
    • 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
    • B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
    • B05B11/0064—Lift 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
    • B05B11/0005—Components or details
    • B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
    • B05B11/0072—A valve member forming part of an outlet opening
    • 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
    • B05B11/1038—Pressure accumulation pumps, i.e. pumps comprising a pressure accumulation chamber
    • B05B11/104—Pressure accumulation pumps, i.e. pumps comprising a pressure accumulation chamber the outlet valve being opened by pressure after a defined accumulation stroke
    • 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
    • B05B11/0037—Containers
    • B05B11/0039—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means
    • 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
    • B05B11/0037—Containers
    • B05B11/0039—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means
    • B05B11/0044—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means
    • B05B11/00442—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means the means being actuated by the difference between the atmospheric pressure and the pressure inside the container

Definitions

  • the invention relates to a dispensing unit for liquid or pasty media with a container, on the neck of a two-part metering pump is placed, wherein a hollow cylindrical first part of the metering pump connects to the neck and at a suction port a first one-way valve having a first valve body, said a piston-forming second part of the metering pump is provided with an outer actuating lug for a stroke of the metering pump, slidably extending in the first part, and at a suction opening aligned with the suction port, a second one-way valve having a preferably spring-loaded, second valve body, and wherein the two one-way valves open in the same direction, and the distance between the two valve bodies is variable.
  • the first one-way valve will hereinafter also be referred to as a suction valve and the second one-way valve as a dispensing valve.
  • a container with a metering pump for an unspecified liquid medium is known, wherein the container is in the delivery on the head.
  • the two valve bodies are conical and arranged at the two ends of a spring-loaded rod, wherein in the rest position the second valve is closed at the discharge opening and the first valve is open at the suction opening, so that the pump chamber is filled with the medium.
  • the first valve closes and the second opens, so that the portion contained in the pump chamber can flow out.
  • the piston-forming second part then returns to the starting position, wherein the second valve closes and the first opens, so that the pump chamber fills again.
  • the rigid connection of the two valve body leads to inaccuracies in the dosage, since the two valves are not optimally matched to each other, the flow properties of the medium play a role.
  • the rigid connection has the advantage that, for example, in the case of air trapped in the pump chamber the Dispensing valve is reliably opened even if the resulting pressure in the pump chamber is not sufficient for this purpose.
  • the invention has now taken on the task of creating an existing from the container and the associated metering pump dispensing unit, in which even in a fault inaccuracies in the dosage causing valve positions are avoided.
  • This is achieved in that the first valve body arranged in the intake opening is designed as an opening stop for the second valve body arranged in the opposite discharge opening.
  • the two valve bodies operate unaffected by a substantial part of the stroke of the pump from each other, and it comes before the end of the stroke only in case of failure, when the second valve body is stuck in the closed position, to a direct coupling between the two valve bodies, forcibly the dispensing valve opens. In the pump chamber trapped, compressed air can escape from the metering pump. This is especially for a first time operation of advantage.
  • the coupling of the two valves also ensures that when a dried dispensing valve, as it may be the case for a longer standstill, the second valve body is mechanically opened.
  • the closing force of the intake valve corresponds to the required opening force of the dispensing valve.
  • the second valve body has an axially projecting into the metering shaft whose free end is at a distance from the first valve body.
  • an abutment for the spring may be formed, which acts on the second valve body in the closed position, so that the dispensing valve is tight and the medium does not drip.
  • a dispensing unit in particular for head-mounted use in a dispenser for dispensing a liquid or pasty medium, comprises a rigid, aeratable container 1 with a metering pump 5 arranged on its neck 2, which is covered by a protective cap 3 until use, such as Fig. 1 shows.
  • the metering pump 5 comprises two essential parts 11, 16, of which the first part 11 arranged on the neck 2 of the container 1, in particular unsolvable glued or welded, when the container 1 and the metering pump 5 are made of a plastic.
  • Such a dispensing unit is exchanged for a filled after emptying.
  • the first part 11 of the metering pump 5 is formed as a hollow cylinder and in the connection region with the container, a suction opening is provided, which is associated with an intake valve in the form of a first one-way valve 6.
  • the first valve body 7 provided in the first one-way valve is spherical and held loosely in a valve cage 12 comprising a plurality of webs with inwardly projecting end protrusions.
  • the valve seat is cone-shaped. Due to gravity, therefore, the first one-way valve 6 in the in Fig. 2 shown rest position open.
  • Other suitable intake valves are for example flap valves, umbrella valves or beak valves.
  • the second part 16 of the metering pump 5 forms the piston and is slidably disposed in the hollow cylindrical first part 11 against a spring 21, so that the delivery chamber 20 of the metering pump can change.
  • the intake opening in the first part 11 opposite a discharge opening is provided in the second part 16, which is associated with a dispensing valve in the form of a rectified, so outwardly opening second one-way valve 8.
  • the second one-way valve 8 has a conically widening valve body 9 which has a shaft 10 extending axially into the delivery chamber 20. The shaft ends at a variable distance a, which is smaller than the stroke h of the metering pump to the first valve body 7.
  • the shaft 10 has an annular shoulder, and a closing spring 22 is clamped between the annular shoulder and the inside of the valve seat in the second part 16 , In the in Fig. 2 shown rest position is therefore the second one-way valve 8 sealingly closed.
  • the closing spring 22 determines the opening pressure of the metering pump. 5
  • the delivery chamber 20 is reduced by raising the piston-forming second part 16.
  • the device used for this purpose is not the subject of the invention, wherein in Fig. 2 only one provided in the upside-down use in a dispenser driving sleeve 25 is shown by dashed lines, which engages around the second one-way valve 8 on an outer actuating lug 17 on the second part 16 of the metering pump 5. Below the discharge opening can still, optionally changeable, disc-like jet regulator 18 od. Like. Be provided to control flow rate or atomization of the escaping medium.
  • the system of the shaft 10 to the first valve body 7 helps to eliminate or avoid malfunctions that may result from the fact that the second valve body 9 in particular also hangs under the action of the closing spring 22 in the discharge opening. These malfunctions are dependent on the type and consistency of the medium contained and simultaneous air inclusion in the delivery chamber 20, especially at the first use, just before consumption of the content, or prolonged disuse by gluing the second valve body 9 in the discharge opening.
  • the lifting of the second piston-forming part 16 would in such a case empty the delivery chamber 20 only when the trapped air can be compressed to such an extent that the pressure is sufficient to release the second bonded valve body 9. If the proportion of air is too high, it would even be conceivable that the second valve body remains in its valve seat, and the metering pump is useless, since each stroke compresses only the air and each return stroke relaxes them, but not displaced.
  • FIG. 4 An accident caused mainly by air entrapment of this kind is out Fig. 4 seen.
  • the first valve body 7 is pressed into the valve seat, while the second valve body 9, which is additionally acted upon by the compression spring 22 has not moved down, so that the second one-way valve 8 also remains closed.
  • the pressure in the delivery chamber 20 may increase sufficiently, and the second one-way valve 8 opens, whereupon further metering operations take place in the desired manner.
  • a ventilation channel 14 is provided, which extends into the container 1 and is provided with a further one-way valve, in particular a duckbill valve.
  • the spring 21 for the return of the second part 16 of the metering pump 5 can be omitted if the unspecified described actuator for the metering pump 5, from the in Fig. 2 the driving sleeve 25 is drawn by dashed lines, having a return spring or the like, and the driving sleeve 25, the actuating projection 17 forcibly leads in both directions.

Landscapes

  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Closures For Containers (AREA)
  • Compressor (AREA)
  • Massaging Devices (AREA)
  • Beans For Foods Or Fodder (AREA)

Description

Die Erfindung betrifft eine Abgabeeinheit für flüssige oder pastöse Medien mit einem Behälter, auf dessen Hals eine zwei Teile aufweisende Dosierpumpe aufgesetzt ist, wobei ein hohlzylindrischer erster Teil der Dosierpumpe an den Hals anschließt und an einer Ansaugöffnung ein erstes Einwegventil mit einem ersten Ventilkörper aufweist, wobei ein kolbenbildender zweiter Teil der Dosierpumpe mit einem äußeren Betätigungsansatz für einen Hub der Dosierpumpe versehen ist, sich verschiebbar im ersten Teil erstreckt, und an einer mit der Ansaugöffnung fluchtenden Abgabeöffnung ein zweites Einwegventil mit einem vorzugsweise federbeaufschlagten, zweiten Ventilkörper aufweist, und wobei die beiden Einwegventile in die gleiche Richtung öffnen, und der Abstand zwischen den beiden Ventilkörpern variabel ist. Das erste Einwegventil wird nachstehend auch als Ansaugventil und das zweite Einwegventil als Abgabeventil bezeichnet.The invention relates to a dispensing unit for liquid or pasty media with a container, on the neck of a two-part metering pump is placed, wherein a hollow cylindrical first part of the metering pump connects to the neck and at a suction port a first one-way valve having a first valve body, said a piston-forming second part of the metering pump is provided with an outer actuating lug for a stroke of the metering pump, slidably extending in the first part, and at a suction opening aligned with the suction port, a second one-way valve having a preferably spring-loaded, second valve body, and wherein the two one-way valves open in the same direction, and the distance between the two valve bodies is variable. The first one-way valve will hereinafter also be referred to as a suction valve and the second one-way valve as a dispensing valve.

Siehe auch WO 82/04203 als nächster Stand der Technik.See also WO 82/04203 as the closest prior art.

Aus der FR 10 64 626 ist ein Behälter mit einer Dosierpumpe für ein nicht näher definiertes flüssiges Medium bekannt, wobei der Behälter bei der Abgabe am Kopf steht. Die beiden Ventilkörper sind kegelig und an den beiden Enden eines federbeaufschlagten Stabes angeordnet, wobei in Ruhestellung das zweite Ventil an der Abgabeöffnung geschlossen und das erste Ventil an der Ansaugöffnung offen ist, sodass die Pumpenkammer mit dem Medium gefüllt ist. Wird der kolbenbildende zweite Teil der Dosierpumpe angehoben, so schließt das erste Ventil und das zweite öffnet, sodass die in der Pumpenkammer enthaltene Portion ausfließen kann.From the FR 10 64 626 a container with a metering pump for an unspecified liquid medium is known, wherein the container is in the delivery on the head. The two valve bodies are conical and arranged at the two ends of a spring-loaded rod, wherein in the rest position the second valve is closed at the discharge opening and the first valve is open at the suction opening, so that the pump chamber is filled with the medium. When the piston-forming second part of the metering pump is raised, the first valve closes and the second opens, so that the portion contained in the pump chamber can flow out.

Unter der Wirkung der Rückstellfeder kehrt der kolbenbildende zweite Teil dann in die Ausgangsstellung zurück, wobei das zweite Ventil schließt und das erste öffnet, sodass sich die Pumpenkammer wieder füllt.Under the action of the return spring, the piston-forming second part then returns to the starting position, wherein the second valve closes and the first opens, so that the pump chamber fills again.

Die starre Verbindung der beiden Ventilkörper führt zu Ungenauigkeiten in der Dosierung, da die beiden Ventile nicht optimal aufeinander abstimmbar sind, wobei die Fließeigenschaften des Mediums eine Rolle spielen. Die starre Verbindung hat aber den Vorteil, dass beispielsweise bei Lufteinschluss in der Pumpenkammer das Abgabeventil auch dann verlässlich geöffnet wird, wenn der in der Pumpenkammer entstehende Druck hiefür nicht ausreicht.The rigid connection of the two valve body leads to inaccuracies in the dosage, since the two valves are not optimally matched to each other, the flow properties of the medium play a role. But the rigid connection has the advantage that, for example, in the case of air trapped in the pump chamber the Dispensing valve is reliably opened even if the resulting pressure in the pump chamber is not sufficient for this purpose.

Die Erfindung hat sich nun die Aufgabe gestellt, eine aus dem Behälter und der damit verbundenen Dosierpumpe bestehende Abgabeeinheit zu schaffen, bei der auch in einem Störungsfall Ungenauigkeiten in der Dosierung verursachende Ventilstellungen vermieden sind. Dies wird dadurch erreicht, dass der in der Ansaugöffnung angeordnete erste Ventilkörper als Öffnungsanschlag für den in der gegenüber liegenden Abgabeöffnung angeordneten zweiten Ventilkörper ausgebildet ist.The invention has now taken on the task of creating an existing from the container and the associated metering pump dispensing unit, in which even in a fault inaccuracies in the dosage causing valve positions are avoided. This is achieved in that the first valve body arranged in the intake opening is designed as an opening stop for the second valve body arranged in the opposite discharge opening.

Auf diese Weise arbeiten die beiden Ventilkörper über einen wesentlichen Teil des Hubs der Pumpe voneinander unbeeinflusst, und es kommt vor Ende des Hubs nur im Störungsfall, wenn der zweite Ventilkörper in Schließstellung festsitzt, zu einer direkten Koppelung zwischen den beiden Ventilkörpern, die das Abgabeventil zwangweise öffnet. In der Pumpenkammer eingeschlossene, komprimierte Luft kann dadurch aus der Dosierpumpe austreten. Dies ist gerade bei einer erstmaligen Betätigung von Vorteil. Die Kopplung der beiden Ventile stellt auch sicher, dass bei einem eingetrockneten Abgabeventil, wie es bei einem längeren Stillstand der Fall sein kann, der zweite Ventilkörper mechanisch geöffnet wird. Die Schließkraft des Ansaugventils entspricht dabei der benötigten Öffnungskraft des Abgabeventils.In this way, the two valve bodies operate unaffected by a substantial part of the stroke of the pump from each other, and it comes before the end of the stroke only in case of failure, when the second valve body is stuck in the closed position, to a direct coupling between the two valve bodies, forcibly the dispensing valve opens. In the pump chamber trapped, compressed air can escape from the metering pump. This is especially for a first time operation of advantage. The coupling of the two valves also ensures that when a dried dispensing valve, as it may be the case for a longer standstill, the second valve body is mechanically opened. The closing force of the intake valve corresponds to the required opening force of the dispensing valve.

Bevorzugt ist weiters vorgesehen, dass der zweite Ventilkörper einen axial in die Dosierpumpe ragenden Schaft aufweist, dessen freies Ende im Abstand zum ersten Ventilkörper ist.Preferably, it is further provided that the second valve body has an axially projecting into the metering shaft whose free end is at a distance from the first valve body.

Am Schaft kann ein Widerlager für die Feder ausgebildet sein, die den zweiten Ventilkörper in Schließstellung beaufschlagt, sodass das Abgabeventil dicht ist und das Medium nicht nachtropft.On the shaft, an abutment for the spring may be formed, which acts on the second valve body in the closed position, so that the dispensing valve is tight and the medium does not drip.

Weitere Einzelheiten und Vorteile der vorliegenden Erfindung werden anhand der Figurenbeschreibung unter Bezugnahme auf die in den Zeichnungen dargestellten Ausführungsbeispiele im Folgenden näher erläutert. Darin zeigen:

Fig. 1
eine Schrägansicht einer erfindungsgemäßen Abgabeeinheit mit abgedeckter Dosierpumpe,
Fig. 2
einen Längsschnitt durch die Dosierpumpe in Ruhestellung,
Fig. 3
einen Längsschnitt durch die Dosierpumpe nach Abgabe einer Portion des Mediums,
Fig. 4
einen Längsschnitt durch die Dosierpumpe in einer störungsbedingten Schließstellung beider Ventilkörper, und
Fig. 5
einen Längsschnitt durch die Dosierpumpe gemäß Fig. 4 vor Zwangsöffnung des Abgabeventils.
Further details and advantages of the present invention will be explained in more detail below with reference to the description of the figures with reference to the exemplary embodiments illustrated in the drawings. Show:
Fig. 1
an oblique view of a dispensing unit according to the invention with covered metering pump,
Fig. 2
a longitudinal section through the metering pump in the rest position,
Fig. 3
a longitudinal section through the metering pump after dispensing a portion of the medium,
Fig. 4
a longitudinal section through the metering pump in a malfunctioning closed position of both valve body, and
Fig. 5
a longitudinal section through the metering pump according to Fig. 4 before forced opening of the dispensing valve.

Eine Abgabeeinheit, insbesondere zur kopfstehenden Verwendung in einem Spender für die Abgabe eines flüssigen oder pastösen Mediums umfasst einen steifen, belüftbaren Behälter 1 mit einer auf dessen Hals 2 angeordneten Dosierpumpe 5, die bis zur Verwendung von einer Schutzkappe 3 abgedeckt ist, wie Fig. 1 zeigt. Die Dosierpumpe 5 umfasst zwei wesentliche Teile 11, 16, von denen der erste Teil 11 am Hals 2 des Behälters 1 angeordnet, insbesondere unlösbar verklebt oder verschweißt ist, wenn der Behälter 1 und die Dosierpumpe 5 aus einem Kunststoff gefertigt sind. Eine derartige Abgabeeinheit wird nach Entleerung gegen eine gefüllte getauscht. Es wäre aber auch denkbar, die Dosierpumpe 5 lösbar am Behälter 1 anzubringen, sodass die Abgabeeinheit wieder befüllt und verwendet werden kann.A dispensing unit, in particular for head-mounted use in a dispenser for dispensing a liquid or pasty medium, comprises a rigid, aeratable container 1 with a metering pump 5 arranged on its neck 2, which is covered by a protective cap 3 until use, such as Fig. 1 shows. The metering pump 5 comprises two essential parts 11, 16, of which the first part 11 arranged on the neck 2 of the container 1, in particular unsolvable glued or welded, when the container 1 and the metering pump 5 are made of a plastic. Such a dispensing unit is exchanged for a filled after emptying. However, it would also be conceivable to detachably attach the metering pump 5 to the container 1 so that the dispensing unit can be refilled and used.

Der erste Teil 11 der Dosierpumpe 5 ist hohlzylindrisch ausgebildet und im Verbindungsbereich mit dem Behälter ist eine Ansaugöffnung vorgesehen, der ein Ansaugventil in Form eines ersten Einwegventils 6 zugeordnet ist. Für die in den Figuren gezeigte kopfstehende Anordnung ist der im ersten Einwegventil vorgesehene erste Ventilkörper 7 kugelig ausgebildet und in einem mehrere Stege mit nach innen vorstehenden Endvorsprüngen umfassenden Ventilkäfig 12 lose gehalten. Der Ventilsitz ist kegelförmig. Aufgrund der Schwerkraft ist daher das erste Einwegventil 6 in der in Fig. 2 gezeigten Ruhestellung offen. Andere geeignete Ansaugventile sind beispielsweise Klappenventile, Schirmventile oder Schnabelventile.The first part 11 of the metering pump 5 is formed as a hollow cylinder and in the connection region with the container, a suction opening is provided, which is associated with an intake valve in the form of a first one-way valve 6. For the upside-down arrangement shown in the figures, the first valve body 7 provided in the first one-way valve is spherical and held loosely in a valve cage 12 comprising a plurality of webs with inwardly projecting end protrusions. The valve seat is cone-shaped. Due to gravity, therefore, the first one-way valve 6 in the in Fig. 2 shown rest position open. Other suitable intake valves are for example flap valves, umbrella valves or beak valves.

Der zweite Teil 16 der Dosierpumpe 5 bildet deren Kolben und ist im hohlzylindrischen ersten Teil 11 gegen eine Feder 21 verschiebbar angeordnet, sodass der Förderraum 20 der Dosierpumpe sich verändern kann. Der Ansaugöffnung im ersten Teil 11 gegenüberliegend ist im zweiten Teil 16 eine Abgabeöffnung vorgesehen, der ein Abgabeventil in Form eines gleichgerichteten, also nach außen öffnenden zweiten Einwegventils 8 zugeordnet ist. Das zweite Einwegventil 8 hat einen sich konisch erweiternden Ventilkörper 9, der einen sich axial in den Förderraum 20 erstreckenden Schaft 10 aufweist. Der Schaft endet in einem variablen Abstand a, der kleiner als der Hub h der Dosierpumpe ist, zum ersten Ventilkörper 7. Der Schaft 10 weist eine Ringschulter auf, und eine Schließfeder 22 ist zwischen der Ringschulter und der Innenseite des Ventilsitzes im zweiten Teil 16 eingespannt. In der in Fig. 2 gezeigten Ruhestellung ist daher das zweite Einwegventil 8 dichtend geschlossen. Die Schließfeder 22 bestimmt den Öffnungsdruck der Dosierpumpe 5.The second part 16 of the metering pump 5 forms the piston and is slidably disposed in the hollow cylindrical first part 11 against a spring 21, so that the delivery chamber 20 of the metering pump can change. The intake opening in the first part 11 opposite a discharge opening is provided in the second part 16, which is associated with a dispensing valve in the form of a rectified, so outwardly opening second one-way valve 8. The second one-way valve 8 has a conically widening valve body 9 which has a shaft 10 extending axially into the delivery chamber 20. The shaft ends at a variable distance a, which is smaller than the stroke h of the metering pump to the first valve body 7. The shaft 10 has an annular shoulder, and a closing spring 22 is clamped between the annular shoulder and the inside of the valve seat in the second part 16 , In the in Fig. 2 shown rest position is therefore the second one-way valve 8 sealingly closed. The closing spring 22 determines the opening pressure of the metering pump. 5

Der Förderraum 20 wird durch Anheben des kolbenbildenden zweiten Teiles 16 verkleinert. Die hiefür verwendete Einrichtung ist nicht Gegenstand der Erfindung, wobei in Fig. 2 nur eine in der kopfstehenden Verwendung in einem Spender vorgesehene Mitnahmehülse 25 strichliert gezeichnet ist, die rund um das zweite Einwegventil 8 an einem äußeren Betätigungsansatz 17 am zweiten Teil 16 der Dosierpumpe 5 angreift. Unterhalb der Abgabeöffnung kann noch ein, gegebenenfalls wechselbarer, scheibenartiger Strahlregler 18 od. dgl. vorgesehen sein, um Fließgeschwindigkeit bzw. Zerstäubung des austretenden Mediums zu kontrollieren.The delivery chamber 20 is reduced by raising the piston-forming second part 16. The device used for this purpose is not the subject of the invention, wherein in Fig. 2 only one provided in the upside-down use in a dispenser driving sleeve 25 is shown by dashed lines, which engages around the second one-way valve 8 on an outer actuating lug 17 on the second part 16 of the metering pump 5. Below the discharge opening can still, optionally changeable, disc-like jet regulator 18 od. Like. Be provided to control flow rate or atomization of the escaping medium.

Wird die Mitnahmehülse 25 aus der Stellung nach Fig. 2 angehoben, so wird im Förderraum 20 eingeschlossenes Medium über das zweite Einwegventil 8 durch die Abgabeöffnung ausgedrückt, da das erste Einwegventil 6 den Weg in den Behälter 1 sperrt. Am Ende des Hubs liegt der Schaft 10 des zweiten Ventilkörpers 9 am ersten Ventilkörper 7 an. Wird die Dosierpumpe 5 in der komprimierten Stellung, die in Fig. 3 gezeigt ist, wieder freigegeben, so vergrößert sich unter der Wirkung der Feder 21 der Förderraum 20, wobei zu Beginn des Rückhubs aufgrund der Anlage des Schafts 10 am Ventilkörper 7 durch das noch offene zweite Einwegventil 8 ein im Ventilbereich hängender Rest des Mediums in den Förderraum 20 rückgesaugt wird, sodass ein Nachtropfen vermieden wird. Nach diesem kurzen Augenblick entfernt sich bei fortschreitendem Rückhub der Schaft 10 vom ersten Ventilkörper 7, sodass sich einerseits das zweite Einwegventil 8 schließen und andererseits das erste Einwegventil 6 öffnen kann. Nunmehr wird Medium aus dem Behälter 1 angesaugt, bis der Rückhub abgeschlossen ist und die Ruhestellung nach Fig. 2 wieder erreicht ist.If the driving sleeve 25 from the position after Fig. 2 lifted, as in the delivery chamber 20 enclosed medium via the second one-way valve 8 is expressed by the discharge opening, since the first one-way valve 6 blocks the way into the container 1. At the end of the stroke, the shaft 10 of the second valve body 9 bears against the first valve body 7. If the metering pump 5 in the compressed position, the in Fig. 3 is shown, released again, so increases under the action of the spring 21, the delivery chamber 20, wherein at the beginning of the return stroke due to the system of the shaft 10 on the valve body 7 through the still open second one-way valve 8 in the valve region hanging remainder of the medium in the delivery chamber 20 is sucked back, so that dripping is avoided. After this brief moment the shaft 10 moves away from the first valve body 7 as the return stroke progresses, so that on the one hand the second one-way valve 8 closes and on the other hand the first one-way valve 6 can open. Now medium is sucked from the container 1 until the return stroke is completed and the rest position after Fig. 2 is reached again.

Die Anlage des Schaftes 10 an den ersten Ventilkörper 7 hilft Funktionsstörungen zu beheben oder zu vermeiden, die sich daraus ergeben können, dass der zweite Ventilkörper 9 insbesondere auch unter der Wirkung der Schließfeder 22 in der Abgabeöffnung hängen bleibt. Diese Funktionsstörungen sind abhängig von der Art und Konsistenz des enthaltenen Mediums und gleichzeitigem Lufteinschluss im Förderraum 20, vor allem bei der Erstverwendung, knapp vor Aufbrauch des Inhalts, oder bei längerem Nichtgebrauch durch Verkleben des zweiten Ventilkörpers 9 in der Abgabeöffnung. Das Anheben des zweiten kolbenbildenden Teiles 16 würde in einem derartigen Fall den Förderraum 20 erst dann entleeren, wenn die eingeschlossene Luft so weit komprimiert werden kann, dass der Druck ausreicht, um den zweiten verklebten Ventilkörper 9 zu lösen. Ist der Luftanteil zu hoch, so wäre es sogar denkbar, dass der zweite Ventilkörper in seinem Ventilsitz verbleibt, und die Dosierpumpe unbrauchbar ist, da jeder Hub nur die Luft komprimiert und jeder Rückhub sie wieder entspannt, aber nicht verdrängt.The system of the shaft 10 to the first valve body 7 helps to eliminate or avoid malfunctions that may result from the fact that the second valve body 9 in particular also hangs under the action of the closing spring 22 in the discharge opening. These malfunctions are dependent on the type and consistency of the medium contained and simultaneous air inclusion in the delivery chamber 20, especially at the first use, just before consumption of the content, or prolonged disuse by gluing the second valve body 9 in the discharge opening. The lifting of the second piston-forming part 16 would in such a case empty the delivery chamber 20 only when the trapped air can be compressed to such an extent that the pressure is sufficient to release the second bonded valve body 9. If the proportion of air is too high, it would even be conceivable that the second valve body remains in its valve seat, and the metering pump is useless, since each stroke compresses only the air and each return stroke relaxes them, but not displaced.

Ein vor allem durch Lufteinschluss bedingter Störfall dieser Art ist aus Fig. 4 ersichtlich. Zu Beginn des Hubes schließt das erste Einwegventil 6, und der erste Ventilkörper 7 wird in den Ventilsitz gedrückt, während der zweite Ventilkörper 9, der ja zusätzlich von der Druckfeder 22 beaufschlagt ist, sich nicht nach unten bewegt hat, sodass das zweite Einwegventil 8 ebenfalls geschlossen bleibt. Beim weiteren Anheben kann sich der Druck im Förderraum 20 ausreichend erhöhen, und das zweite Einwegventil 8 öffnet, worauf weitere Dosiervorgänge in der gewünschten Weise ablaufen. Reicht dies aber nicht aus, so stößt der Schaft 10 des zweiten Ventilkörpers 9 nach etwa zwei Drittel des Hubs h - der Ventilkörper 9 liegt ja höher und näher zum ersten Einwegventil 6, als wenn er geöffnet hätte - an den ersten Ventilkörper 7. Dieser Moment ist in Fig. 5 dargestellt. Der verbleibende Resthub h-a überführt den Ventilkörper 9 zwangsläufig in die offene Stellung gemäß Fig. 3, sodass die Dosierpumpe 5 wieder funktionsfähig wird und bleibt, und bei der nächsten Betätigung eine vollständige Portion abgegeben wird.An accident caused mainly by air entrapment of this kind is out Fig. 4 seen. At the beginning of the stroke closes the first one-way valve 6, and the first valve body 7 is pressed into the valve seat, while the second valve body 9, which is additionally acted upon by the compression spring 22 has not moved down, so that the second one-way valve 8 also remains closed. Upon further lifting, the pressure in the delivery chamber 20 may increase sufficiently, and the second one-way valve 8 opens, whereupon further metering operations take place in the desired manner. However, if this is not sufficient, then the shaft 10 of the second valve body 9 abuts after approximately two thirds of the stroke h - the valve body 9 is higher and closer to the first one-way valve 6 than if it had opened - to the first valve body 7 is in Fig. 5 shown. The remaining residual stroke ha inevitably transfers the valve body 9 to the open position Fig. 3 so that the metering pump 5 becomes functional again and remains, and at the next actuation a complete portion is dispensed.

Damit in einen Behälter 1, der nicht durch äußeren Luftdruck zusammengedrückt werden soll, Luft einströmen kann, wenn das Medium in den Förderraum 20 abgesaugt wird, ist in dem am Hals 2 fixierten Bereich des ersten Teiles 11 der Dosierpumpe 5 ein Belüftungskanal 14 vorgesehen, der sich in den Behälter 1 erstreckt und mit einem weiteren Einwegventil, insbesondere einem Entenschnabelventil versehen ist.Thus, air can flow into a container 1, which is not to be compressed by external air pressure, when the medium is sucked into the delivery chamber 20 is, in the fixed to the neck 2 region of the first part 11 of the metering pump 5, a ventilation channel 14 is provided, which extends into the container 1 and is provided with a further one-way valve, in particular a duckbill valve.

Die Feder 21 für die Rückstellung des zweiten Teiles 16 der Dosierpumpe 5 kann entfallen, wenn die nicht näher beschriebene Betätigungseinrichtung für die Dosierpumpe 5, von der in Fig. 2 die Mitnahmehülse 25 strichliert gezeichnet ist, eine Rückstellfeder oder dergleichen aufweist, und die Mitnahmehülse 25 den Betätigungsansatz 17 in beide Richtungen zwangführt.The spring 21 for the return of the second part 16 of the metering pump 5 can be omitted if the unspecified described actuator for the metering pump 5, from the in Fig. 2 the driving sleeve 25 is drawn by dashed lines, having a return spring or the like, and the driving sleeve 25, the actuating projection 17 forcibly leads in both directions.

Claims (6)

  1. A delivery unit for fluid or pasty media comprising a container (1), on the neck (2) of which is fitted a metering pump (5) having two portions (11, 16), wherein a hollow-cylindrical first portion (11) of the metering pump (5) connects to the neck (2) and at a suction intake opening has a first one-way valve (6) with a first valve body (7), wherein a piston-forming second portion (16) of the metering pump (5) is provided with an outer actuation fitment (17) for a lifting (h) of the metering pump (5), extends displaceably in the first portion (11), and at a delivery opening aligned with the suction intake opening has a second one-way valve (8) having a preferably spring-loaded second valve body (9), and wherein the two one-way valves (6, 8) open in the same direction, and the spacing (a) between the two valve bodies (7, 9) is variable, characterised in that the first valve body (7) arranged in the suction intake opening is in the form of an opening abutment for the second valve body (9) arranged in the oppositely disposed delivery opening.
  2. A delivery unit according to claim 1 characterised in that the second valve body (9) has a stem (10) which projects axially into the metering pump (5) and whose free end is at a spacing (a) relative to the first valve body (7).
  3. A delivery unit according to claim 1 or claim 2 characterised in that the second one-way valve has a conical valve seat and a tapered valve body (9).
  4. A delivery unit according to one of claims 1 to 3 characterised in that the first valve body (7) is spherical.
  5. A delivery unit according to claim 4 characterised in that for upside down use the first valve body (7) is held loosely in a valve cage (12) provided in the first portion (11) of the metering pump (5).
  6. A delivery unit according to one of claims 1 to 5 characterised in that the container (1) is non-compressible and the first portion (11) has an air inlet passage (14) equipped with a one-way valve.
EP13728922.9A 2012-04-30 2013-04-26 Dispensing unit Active EP2844397B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SI201330114T SI2844397T1 (en) 2012-04-30 2013-04-26 Dispensing unit
PL13728922T PL2844397T3 (en) 2012-04-30 2013-04-26 Dispensing unit
HRP20160029TT HRP20160029T1 (en) 2012-04-30 2013-04-26 Dispensing unit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA518/2012A AT511827B1 (en) 2012-04-30 2012-04-30 Dispensing unit for liquid or pasty media
PCT/AT2013/000080 WO2013163666A2 (en) 2012-04-30 2013-04-26 Dispensing unit for liquid or pasty media

Publications (2)

Publication Number Publication Date
EP2844397A2 EP2844397A2 (en) 2015-03-11
EP2844397B1 true EP2844397B1 (en) 2015-10-21

Family

ID=47833616

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13728922.9A Active EP2844397B1 (en) 2012-04-30 2013-04-26 Dispensing unit

Country Status (10)

Country Link
EP (1) EP2844397B1 (en)
AT (1) AT511827B1 (en)
ES (1) ES2559266T3 (en)
HR (1) HRP20160029T1 (en)
HU (1) HUE028392T2 (en)
PL (1) PL2844397T3 (en)
PT (1) PT2844397E (en)
RS (1) RS54484B1 (en)
SI (1) SI2844397T1 (en)
WO (1) WO2013163666A2 (en)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4511069A (en) * 1981-06-04 1985-04-16 The Pharmasol Corporation Dispensing system
GB8507868D0 (en) * 1985-03-26 1985-05-01 Salesprint Temple Group Ltd Liquid dispenser
US4964544A (en) * 1988-08-16 1990-10-23 Bobrick Washroom Equipment, Inc. Push up dispenser with capsule valve
US4949877A (en) * 1989-05-11 1990-08-21 Bobrick Washroom Equipment, Inc. Fluid dispenser valve
US4993600A (en) * 1989-10-10 1991-02-19 James River Corporation Liquid dispenser pump
US5975360A (en) * 1991-05-20 1999-11-02 Ophardt; Heiner Capped piston pump
DE19713721C2 (en) * 1997-04-03 2000-04-20 Calmar Albert Gmbh donor
US6516976B2 (en) * 2000-12-19 2003-02-11 Kimberly-Clark Worldwide, Inc. Dosing pump for liquid dispensers
PT2135681E (en) * 2008-06-20 2015-08-24 Gojo Ind Inc Two-stroke foam pump

Also Published As

Publication number Publication date
HRP20160029T1 (en) 2016-02-12
ES2559266T3 (en) 2016-02-11
PL2844397T3 (en) 2016-04-29
SI2844397T1 (en) 2016-02-29
WO2013163666A2 (en) 2013-11-07
EP2844397A2 (en) 2015-03-11
AT511827B1 (en) 2013-03-15
RS54484B1 (en) 2016-06-30
PT2844397E (en) 2016-01-28
AT511827A4 (en) 2013-03-15
HUE028392T2 (en) 2016-12-28
WO2013163666A3 (en) 2013-12-27

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