EP0286925A2 - Device for delivery of liquids - Google Patents

Device for delivery of liquids Download PDF

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Publication number
EP0286925A2
EP0286925A2 EP88105328A EP88105328A EP0286925A2 EP 0286925 A2 EP0286925 A2 EP 0286925A2 EP 88105328 A EP88105328 A EP 88105328A EP 88105328 A EP88105328 A EP 88105328A EP 0286925 A2 EP0286925 A2 EP 0286925A2
Authority
EP
European Patent Office
Prior art keywords
channel
pump
valve
discharge
compressed air
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.)
Granted
Application number
EP88105328A
Other languages
German (de)
French (fr)
Other versions
EP0286925B1 (en
EP0286925A3 (en
Inventor
Karl-Heinz Fuchs
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aptar Radolfzell GmbH
Original Assignee
Erich Pfeiffer GmbH
Ing Erich Pfeiffer GmbH
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Filing date
Publication date
Application filed by Erich Pfeiffer GmbH, Ing Erich Pfeiffer GmbH filed Critical Erich Pfeiffer GmbH
Publication of EP0286925A2 publication Critical patent/EP0286925A2/en
Publication of EP0286925A3 publication Critical patent/EP0286925A3/en
Application granted granted Critical
Publication of EP0286925B1 publication Critical patent/EP0286925B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/0018—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with devices for making foam
    • B05B7/0025—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with devices for making foam with a compressed gas supply
    • B05B7/0031—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with devices for making foam with a compressed gas supply with disturbing means promoting mixing, e.g. balls, crowns
    • B05B7/0037—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with devices for making foam with a compressed gas supply with disturbing means promoting mixing, e.g. balls, crowns including sieves, porous members or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/08—Apparatus to be carried on or by a person, e.g. of knapsack type
    • B05B9/0805—Apparatus to be carried on or by a person, e.g. of knapsack type comprising a pressurised or compressible container for liquid or other fluent material
    • B05B9/0811—Apparatus to be carried on or by a person, e.g. of knapsack type comprising a pressurised or compressible container for liquid or other fluent material comprising air supplying means actuated by the operator to pressurise or compress the container
    • B05B9/0816—Apparatus to be carried on or by a person, e.g. of knapsack type comprising a pressurised or compressible container for liquid or other fluent material comprising air supplying means actuated by the operator to pressurise or compress the container the air supplying means being a manually actuated air pump
    • B05B9/0822—Apparatus to be carried on or by a person, e.g. of knapsack type comprising a pressurised or compressible container for liquid or other fluent material comprising air supplying means actuated by the operator to pressurise or compress the container the air supplying means being a manually actuated air pump a discharge device being fixed to the container

Definitions

  • the invention relates to a discharge device for media stored in a container, with a pump which can be actuated by pressure actuation with a handle and a pump chamber, and with an outlet channel for the medium which is open in a discharge position of the device and leads to a discharge opening and which has an inlet channel which can be closed against the discharge direction is assigned for the stored medium.
  • the pump is usually designed as a thrust piston pump that acts directly on the medium to be pumped, ie, the medium in the pump chamber under delivery pressure, so that only a quantity of medium that is dependent on the size of the pump chamber can be pumped with a pump piston stroke.
  • a thrust piston pump that acts directly on the medium to be pumped, ie, the medium in the pump chamber under delivery pressure, so that only a quantity of medium that is dependent on the size of the pump chamber can be pumped with a pump piston stroke.
  • the invention has for its object to provide a discharge device of the type mentioned, which makes it possible in a simple manner to transfer the medium in a larger or smaller amount when transferred to a single discharge position, that is to say in a single continuous discharge process, regardless of the lifting capacity of the pump to apply.
  • the pump is designed as a compressed air pump with a compressed air connection leading to the container and that the discharge channel and the inlet channel in the discharge position to form an inlet opening between a container and through the discharge opening through the media channel substantially bypassing the pump chamber are directly connected to each other.
  • the preferably essentially pressure-tight container can be placed under a gas overpressure with the aid of the compressed air pump above the media level, that is to say can be charged with a substantially greater delivery capacity than the pump, for which purpose the inlet channel is kept closed. If the medium is now to be discharged, then only the channel connection between the inlet opening and the outlet opening needs to be established or opened, so that any quantity of the medium can then be discharged in one pass until the stated conveying capacity is exhausted.
  • the gas which is prestressed in the manner of a capacity in the container or in the media storage space, can be fed between the inlet opening and the outlet opening at the same time as the medium flowing through the media channel in a branch flow and can thereby be admixed, the gas then supplied for example, for foaming the medium before or in the area of the closable point of the inlet channel.
  • a partial stroke of the pump handle extending from the initial position of the pump over a larger part of the actuation stroke serves for the exclusive actuation of the compressed air pump, which can also be repeated over several strokes, for charging the pressure of the container, during a subsequent partial stroke, in particular extending to the end of the pump stroke serves to establish the open media channel connection between the inlet opening and the discharge opening, so that both functions can be triggered in succession with one-handed actuation of only a single handle.
  • the discharge device can be designed to be particularly compact and at least substantially axially symmetrical over the entire length of the pump chamber and of the valve arrangements associated with the media channel if the media channel is guided through the pump chamber in an essentially sealed manner.
  • the outlet channel can be transferred to its discharge position in simply moved together with the pump piston and transferred to its position, which is essentially close to the inlet channel, to form the media channel.
  • the discharge device 1 shown in FIGS. 1 to 4 is provided for pressure-tight, possibly detachable attachment to the narrowed neck of a bottle-shaped container 2, which forms a storage space for the medium and a compressed gas storage above the media level, the discharge device 1 engaging in the container neck fills almost the entire neck.
  • the discharge device 1 has an essentially axially symmetrical compressed air pump 3, which is designed as a thrust piston pump and is equipped with a device that extends across the neck of the container St Trentskappe 4, as a screw cap provided with an internal thread is centered opposite the container neck and is tensioned with the interposition of an annular seal against the end face of the container neck.
  • the compressed air pump 3 has an essentially cylindrical cylinder housing 5, which is relatively closely matched to the inner cross section of the neck of the container 2 indicated by dash-dotted lines in FIG. 2 and is essentially cup-shaped.
  • the cylinder housing 5 has an enlarged housing flange 6 which adjoins it via an annular disk-shaped projection, in the annular jacket part of which forms the associated end of the cylinder housing 5, an essentially annular disk-shaped cylinder cover 7 is inserted and is axially so by resilient detonation is securely fastened that the cylinder cover 7 rests with prestress on the inside of the annular disk-shaped projection and a projecting annular projection engages in the center of the cylinder housing 5.
  • the associated shoulder surface of the housing flange 6 serves to support the front surface of the container neck or on the associated ring seal.
  • the cylinder flange 6 engages with its outer circumference and its end face centered in an annular recessed inner recess of the fastening cap 4, with which it can be clamped against the container neck.
  • the compressed air pump 3 thus forms a structural unit which can be assembled together with the cap 4.
  • the cylinder housing 5 encloses a pump chamber 8 of the compressed air pump 3 that extends almost over its entire length and forms with the inner surface of its jacket a piston raceway 9 for a pot-shaped, essentially one-piece pump piston 10, the opposite with two at the ends of its jacket part obliquely directed sealing lips is guided sealed on this piston raceway 9.
  • the pump piston 10 is tubular with an outgoing from its bottom and less than half in outside diameter piston shaft 11, which is so large and lies in its central axis, which protrudes essentially beyond the outside of the bottom of the pump piston 10 and penetrates a central opening of the cylinder cover 7 and the associated section of the fastening cap 4 to the outside.
  • An actuating head 12 protruding from the associated end of the fastening cap 4 is fastened to the piston shaft 11, which engages in an end collar of the fastening cap 4 with a reduced diameter and can be displaced in the axial direction of the pump 3 up to the stop on the cylinder cover 7.
  • the actuating head 12 has on the inside a tubular socket, in which the piston shaft 11 engages for fastening and which projects through the cylinder cover 7 into the pump chamber 8 at the end of the pump stroke.
  • the pump piston 10 is loaded with a return spring 13 located within the pump chamber 8, which is designed as a helical compression spring and with one end on the inside of the bowl bottom 16 of the pump piston 10 and the other end on the ring-shoulder-shaped bowl bottom 17 of the cylinder housing 5 biased.
  • a return spring 13 located within the pump chamber 8, which is designed as a helical compression spring and with one end on the inside of the bowl bottom 16 of the pump piston 10 and the other end on the ring-shoulder-shaped bowl bottom 17 of the cylinder housing 5 biased.
  • the compressed air pump 3 has at least one suction check valve 14 and at least one discharge check valve 15 for filling and emptying the pump chamber 8.
  • Lip, flap, ball, hose or similar valves are conceivable as valves, it being advantageous if both check valves 14, 15 are of essentially the same or similar design.
  • the valve seat of the respective check valve 14 or 15 by an annular end face of the associated bottom, namely in the case of the suction check valve 14 through the inside of the cup bottom 16 of the pump piston 10 and in the case of the discharge check valve 15 through the outside of the Bottom wall 17 of the cylinder housing 5 is formed.
  • the valve closing part 18 of the entire vorgesese on the pump piston 10 Henen and with this as a whole displaceable suction check valve 14 is formed by an elastic, very flat or plate-shaped annular disc that needs to be axially movable over just a little more than twice its thickness and in the closed position covers a ring of suction openings, which in Cup bottom 16 immediately adjacent to and around the piston shaft 11 are provided as through openings in such a way that outside air can be sucked in via the end collar of the cap 4 and through the central opening of the cylinder cover 7 into it and thus into the pump chamber 8.
  • a disk-shaped stop ring 20 is attached to the valve closing part 18 on its side facing away from the valve seat at a correspondingly small distance in the pump piston 10 or in its cup bottom 16, the stop ring 20 being provided through openings on the outer circumference, on the inner circumference and / or is permeable to air in the area between these peripheral edges.
  • the discharge check valve 15 has a corresponding, but larger in diameter valve closing part 19 and an associated stop ring 21, but these two parts are in a projecting beyond the outside of the bottom wall 17 forming an extension of the jacket wall of the cylinder housing 5 and the ring of compressed air openings is provided close to the inner circumference of the cylinder housing 5.
  • the pump piston 10 When the compressed air pump 3 is actuated by depressing the actuating head 12, the pump piston 10 is moved in the direction of the bottom wall 17 against the force of the return spring 13 and with a corresponding reduction in the size of the pump chamber 8, the suction check valve 14 being automatically closed while the exhaust Check valve 15 is open so that air is pumped into the container 2 and thereby an excess pressure is generated.
  • the discharge check valve 15 closes automatically, while the suction check valve 15 opens, so that air flows into the pump chamber 8 in the manner described is sucked in.
  • the discharge device 1 has an outlet channel 22 which is essentially constantly closed with respect to the pump chamber 8 and which is guided through or essentially formed by the piston shaft 11 and leads at the outer end into a discharge opening 23 which leads to the outside and is provided on the actuating head 12.
  • the discharge opening 23 can lie in the axis of the pump 3 or, as shown, can be formed by the end of an end channel lying at an angle to it in the actuating head 12.
  • the discharge device 1 has an inlet channel 24 lying essentially in the axis of the pump 3, which has an inlet opening close to the container bottom opposite the pump 3, closed or formed in one piece with the rest of the container, and for example by a hose-like elastic or rigid Riser pipe 25 is formed, which is attached to the cylinder housing 5.
  • a cup-shaped sleeve 26 protruding into the pump chamber 8 is connected in one piece to the bottom wall 17 of the cylinder housing 5 and extends approximately over half the length of the pump chamber 88 and the outside width of the pump chamber 8 is so small that the inside width is smaller the compressed air openings in the bottom wall 17 lie between the outer circumference of this sleeve 26 and the piston raceway 9.
  • the return spring 13 is also guided centered on the outer circumference of the sleeve 26.
  • the associated end of the riser 25 is inserted and fixed, for example, by clamping or pressing.
  • the inlet end of the outlet channel 22 is in the form of a socket on the inside of the cup base 16 of the pump piston 10, on which the piston shaft 11 protrudes slightly with a corresponding extension and is surrounded by the check valve 14.
  • the outlet end of the inlet channel 24 is axially aligned and opposite in the bottom of the sleeve 26.
  • the outlet channel 22 has a transition opening 27 and the inlet channel 24 has a transition opening 28 which have the same width and a width which are slightly larger than that is the smallest clear width of the respective channel 22, 24.
  • the transfer openings 27, 28 pass through mutually facing end faces 29, 30 on the one hand of the associated end of the piston skirt 11 and on the other hand the bottom wall of the sleeve 26.
  • the inlet channel 24 and the outlet channel 22 form a media channel 31 which is continuous from the inlet end to the discharge opening 23 and which, although it passes through the pump chamber 8, is essentially sealed off from it, since the end face 29, 30, optionally with the use of additional ones Sealing members are provided as sealing surfaces.
  • the outlet channel 22 can be closed with an outlet valve 32 which is expediently located in the region of its transition opening 27, while the inlet channel 24 also with one Expediently in the region of its transfer opening 28 inlet valve 33 can be closed.
  • Both valves are expediently designed as conical seat valves that can be opened mechanically by pressure or axial actuation, and essentially so that the two valve closing parts 34, 35 and the associated valve springs can be mounted interchangeably.
  • the outlet valve 32 closes against the overpressure in the pump chamber 8, while the inlet valve 33 closes against the overpressure in the container 2. Both valves can be opened by hand against spring force, whereby instead of a separate actuation the arrangement is such that both valves can be opened essentially simultaneously with the actuating head 12.
  • valve closing part 35 of the inlet valve 33 has a driving stop 36 lying in the path of movement of an opening or stop member of the actuating head 12, which is formed by the end face of a plunger 37 projecting beyond the tapered end of the conical valve closing part 35.
  • the valve closing part 34 of the outlet valve 32 has a stop 38 in the relative movement path of an opening or stop member of the part of the pump which is fixed relative to the container 2 or the cap 4, and is formed in the same way by the end of a plunger 39 on.
  • the stop 36 or 38 of the one valve closing part 35 or 34 forms the opening or stop member 38 or 36 for the other valve closing part 34 or 35, so that the two valves 32, 33 are at the end of the pump stroke of the compressed air pump 3 open each other against the force of their closing spring by moving in opposite directions with respect to their valve seats.
  • the stops 36, 38 and the plungers 37, 39 protrude through the transfer openings 28, 27 in the closed position over the end faces 30, 29 and are approximately in the plane in the open or discharge position according to FIGS. 3 and 4 of these abutting end faces.
  • valve seat or the valve housing for the valve Closing part 34 of the outlet valve 32 is formed directly by the piston shaft 11 or the pump piston 10, the valve seat being formed by the inner boundary of an annular end wall penetrated by the transfer opening 27 and having the end face 29 on its outside.
  • a collar sleeve 40 is inserted within the socket of the actuating head 12, at the inner end of which the associated end of the valve spring 41, embodied as a helical compression spring and lying within the outlet channel 22, is supported, the other end of which has a centering mandrel surrounds at the rear of the valve closing part 34.
  • the valve housing 42 of the inlet valve 33 is formed by a separate, sleeve or cup-shaped component which is anchored to an outer jacket by insertion in the sleeve 26 and receives the valve closing part 35 and the associated valve spring 43 in an inner jacket, the associated one End of the riser 25 clamped between the outer and inner sheath of the valve housing 42 engages and is thereby fixed.
  • the valve seat of this inlet valve 33 is formed by the inside of the bottom wall of the sleeve 26.
  • a compressed air duct 44 opens into the media duct and preferably into the inlet duct 24, the inlet of which is connected to the pressure accumulator of the container 2 sunk and is therefore protected from spray liquid inside the sleeve 26, while its outlet opens transversely to the axis of the transfer opening 28 or the inlet channel 24 into the inlet valve 33 immediately adjacent to the valve seat thereof.
  • the compressed air duct 44 has significantly smaller, throttled cross sections than the media duct and is formed, for example, by a helical groove on the outer circumference of the outer casing of the valve housing 42, which lies against the inner surface of the casing wall of the sleeve 26.
  • This helical, directly connected to the pressure accumulator circumferential section of the compressed air channel 44 merges into an end section which is provided in the end face of the valve housing 42 abutting the bottom wall of the sleeve 26 and can have a spiral course instead of a radial course directed against the channel axis, so that the compressed air swirling into inlet channel 24 or the associated valve housing.
  • the discharge device works according to the following method: By depressing the actuating head 12, the pressure in the container 2 is charged in the manner described with the compressed air pump 3, whereby actuation of the pump 3 can only avoid a partial stroke that medium is discharged. If medium is to be discharged, the actuating head 12 is pressed down as far as it will go, the plungers 37, 39 of the valves 33, 32 meeting one another and the valves 32, 33 being opened substantially simultaneously with the application of the end faces 29, 30 to one another, so that the continuous media channel is formed and is continuously open from the inlet end of the inlet channel 24 to the discharge opening 23.
  • the excess pressure in the container 2 drives the medium through the inlet channel 24, bypassing the pump chamber 8, into the outlet channel 22 and from there through the discharge opening 23 into the open.
  • part of the compressed air compressed in the container 2 is admixed via the compressed air duct 44 to the medium flowing through the media or inlet duct 24 in an injection-like manner, so that it can be foamed up relatively far away from the discharge opening 23 and only in the fully foamed state Discharge opening 23 leaves.
  • a foaming body in the form of, for example, a sieve 45 can also be provided in the flow direction after the supply of the foaming air in the media channel, which is expediently attached as a cup-shaped body to the inner end of the collar sleeve 40 and thus in is located within the outlet channel 22 in the flow direction immediately after the outlet valve 32, so that there is also a relatively wide flow path from the sieve 45 to the discharge opening 23.
  • a collecting space 46 is provided in this for this leak medium, from which a return connection leads to the container 2.
  • the annular collecting space can be formed in a simple manner by the space of the pump chamber 8 adjoining the bottom wall 17 and not reached by the pump piston 10 at the end of the pump stroke, while the return connection is formed by the discharge check valve 15 or its valve openings, so that possibly Leak medium located in the pump chamber 8 is forcibly pressed out of the compressed air pump 3 and back into the container 2 at the beginning of each pump stroke.
  • the cup opening of the pump piston 10 lies in the direction of the pump stroke at the front.

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

Abstract

The device (1) for liquid, in particular foaming, media has a compressed air pump (3) to apply pressure to the medium container (2) and a medium channel which is controlled by a valve mechanically via the same actuating head (12) as the pump (3), which medium channel is formed by axial joining together of an outlet channel (22) and a feed channel (24). When these channels are joined together, valves (32, 33) belonging to the compressed air pump (3) are opened mechanically towards the end of the pump stroke, the medium channel penetrating the pump chamber (8) being essentially sealed off in this delivery position in relation to the pump chamber (8). Compressed air from the container (2) is added to the medium flow for foaming of the medium. <IMAGE>

Description

Die Erfindung betrifft eine Austragvorrichtung für in einem Behälter gespeicherte Medien, mit einer durch Druckbetäti­gung mit einer Handhabe betätigbaren, eine Pumpenkammer auf­weisenden Pumpe und mit einem in einer Austragstellung der Vorrichtung geöffneten, zu einer Austragöffnung führenden Auslaßkanal für das Medium, dem ein gegen Austragrichtung verschließbarer Zulaufkanal für das gespeicherte Medium zu­geordnet ist.The invention relates to a discharge device for media stored in a container, with a pump which can be actuated by pressure actuation with a handle and a pump chamber, and with an outlet channel for the medium which is open in a discharge position of the device and leads to a discharge opening and which has an inlet channel which can be closed against the discharge direction is assigned for the stored medium.

Bei bekannten Austragvorrichtungen dieser Art ist die Pumpe meist als unmittelbar auf das zu fördernde Medium wirkende, d.h. das Medium in der Pumpenkammer unter Förderdruck set­zende Schubkolbenpumpe ausgebildet, so daß mit einem Pump­kolbenhub lediglich eine von der Größe der Pumpenkammer ab­hängige Menge an Medium gefördert werden kann. Beim Austrag mancher Medien besteht aber auch das Bedürfnis, das Medium in einfacher Weise in größeren oder kleineren Mengen, bei­ spielsweise nach Augenmaß, ausbringen zu können, wie das zum Beispiel bei aufzuschäumenden kosmetischen oder ähnlichen Medien der Fall ist.In known discharge devices of this type, the pump is usually designed as a thrust piston pump that acts directly on the medium to be pumped, ie, the medium in the pump chamber under delivery pressure, so that only a quantity of medium that is dependent on the size of the pump chamber can be pumped with a pump piston stroke. When discharging some media, there is also the need to easily and in large or small quantities to be able to apply, for example, by eye, as is the case, for example, with cosmetic or similar media to be foamed.

Der Erfindung liegt die Aufgabe zugrunde, eine Austragvor­richtung der genannten Art zu schaffen, die es auf einfache Weise ermöglicht, das Medium bei Überführung in eine einzige Austragstellung, also in einem einzigen durchgehenden Aus­tragvorgang, unabhängig von der Hubleistung der Pumpe in einer größeren oder kleineren Menge auszubringen.The invention has for its object to provide a discharge device of the type mentioned, which makes it possible in a simple manner to transfer the medium in a larger or smaller amount when transferred to a single discharge position, that is to say in a single continuous discharge process, regardless of the lifting capacity of the pump to apply.

Zur Lösung dieser Aufgabe ist bei einer Austragvorrichtung der eingangs beschriebenen Art gemäß der Erfindung vorgese­hen, daß die Pumpe als Druckluft-Pumpe mit einem zum Behäl­ter führenden Druckluftanschluß ausgebildet ist und daß der Austragkanal und der Zulaufkanal in der Austragstellung zur Bildung eines zwischen einer behälterseitigen Einlaßöffnung und der Austragöffnung durchgehenden Medienkanales im we­sentlichen unter Umgehung der Pumpenkammer unmittelbar an­einander angeschlossen sind. Dadurch kann der vorzugsweise im wesentlichen druckdichte Behälter mit Hilfe der Druck­luft-Pumpe oberhalb des Medienspiegels unter einen Gasüber­druck gesetzt, also mit einer gegenüber der Pumpe wesentlich größeren Förderkapazität aufgeladen werden, wofür der Zu­laufkanal geschlossen gehalten wird. Soll nun das Medium ausgebracht werden, so braucht lediglich die Kanalverbindung zwischen der Einlaßöffnung und der Auslaßöffnung hergestellt bzw. geöffnet zu werden, so daß dann jede beliebige Menge des Mediums bis zur Erschöpfung der genannten Förderkapazi­tät in einem Durchgang ausgebracht werden kann.To solve this problem it is provided in a discharge device of the type described at the outset according to the invention that the pump is designed as a compressed air pump with a compressed air connection leading to the container and that the discharge channel and the inlet channel in the discharge position to form an inlet opening between a container and through the discharge opening through the media channel substantially bypassing the pump chamber are directly connected to each other. As a result, the preferably essentially pressure-tight container can be placed under a gas overpressure with the aid of the compressed air pump above the media level, that is to say can be charged with a substantially greater delivery capacity than the pump, for which purpose the inlet channel is kept closed. If the medium is now to be discharged, then only the channel connection between the inlet opening and the outlet opening needs to be established or opened, so that any quantity of the medium can then be discharged in one pass until the stated conveying capacity is exhausted.

Das nach Art einer Kapazität im Behälter bzw. im Medien-­Speicherraum vorgespannte Gas kann gleichzeitig zwischen der Einlaßöffnung und der Auslaßöffnung dem durch den Medienka­nal strömenden Medium in einem Abzweigstrom zugeführt und dadurch beigemischt werden, wobei dieses zugeführte Gas dann zum Beispiel zur Aufschäumung des Mediums bereits vor bzw. im Bereich der verschließbaren Stelle des Zulaufkanales her­angezogen werden kann.The gas, which is prestressed in the manner of a capacity in the container or in the media storage space, can be fed between the inlet opening and the outlet opening at the same time as the medium flowing through the media channel in a branch flow and can thereby be admixed, the gas then supplied for example, for foaming the medium before or in the area of the closable point of the inlet channel.

Es ist zwar denkbar, den Austragkanal und den Zulaufkanal durch einen in jeder Stellung der Austragvorrichtung durch­gehenden Kanal zu bilden bzw. den Medienkanal räumlich au­ßerhalb die Pumpenkammer, beispielsweise unmittelbar neben diese zu legen, jedoch ergibt sich eine besonders kompakte, auch in enge Behälterhälse einsetzbare sowie in den ver­schiedenen Funktionen leicht bedienbare Ausbildung, wenn der Zulaufkanal und der Austragkanal aus einer im Abstand von­einander liegenden getrennten Stellung bei der Handbetäti­gung der Druckluft-Pumpe so zusammengeführt und gleichzeitig geöffnet werden können, daß sie den Medienkanal bilden, der dann von der Einlaßöffnung bis zur Austragöffnung durchge­hend geöffnet und beim Auseinanderführen der beiden Kanäle wieder geschlossen ist. Ein von der Ausgangsstellung der Pumpe über einen größeren Teil des Betätigungshubes reichen­der Teilhub der Pumpen-Handhabe dient zur ausschließlichen, auch über mehrere Hübe wiederholbaren, Betätigung der Druck­luft-Pumpe zur Druckaufladung des Behälters, während ein an­schließender, insbesondere bis zum Förderhubende der Pumpe reichender Teilhub der Herstellung der geöffneten Medien-Ka­nalverbindung zwischen der Einlaßöffnung und der Austragöff­nung dient, so daß bei einhändiger Betätigung nur einer ein­zigen Handhabe beide Funktionen aufeinanderfolgend ausgelöst werden können. Die Austragvorrichtung kann dabei besonders kompakt und wenigstens über die gesamte Länge der Pumpen­kammer sowie der dem Medienkanal zugehörigen Ventilanordnun­gen im wesentlichen achssymmetrisch ausgebildet werden, wenn der Medienkanal im wesentlichen abgedichtet durch die Pum­penkammer hindurchgeführt ist. Vor allem in diesem Fall kann der Auslaßkanal zur Überführung in seine Austragstellung in einfacher Weise gemeinsam mit dem Pumpkolben bewegt und zur Bildung des Medienkanales in seine im wesentlichen dicht an den Zulaufkanal angeschlossene Stellung überführt werden.Although it is conceivable to form the discharge channel and the inlet channel through a channel that is continuous in any position of the discharge device or to place the media channel spatially outside the pump chamber, for example directly next to it, this results in a particularly compact and also usable in narrow container necks Easy to use training in the various functions if the inlet channel and the discharge channel can be brought together and opened at the same time from a separate position in the manual operation of the compressed air pump, so that they form the media channel, which then extends from the inlet opening to Discharge opening is continuously open and is closed again when the two channels are brought apart. A partial stroke of the pump handle extending from the initial position of the pump over a larger part of the actuation stroke serves for the exclusive actuation of the compressed air pump, which can also be repeated over several strokes, for charging the pressure of the container, during a subsequent partial stroke, in particular extending to the end of the pump stroke serves to establish the open media channel connection between the inlet opening and the discharge opening, so that both functions can be triggered in succession with one-handed actuation of only a single handle. The discharge device can be designed to be particularly compact and at least substantially axially symmetrical over the entire length of the pump chamber and of the valve arrangements associated with the media channel if the media channel is guided through the pump chamber in an essentially sealed manner. Especially in this case, the outlet channel can be transferred to its discharge position in simply moved together with the pump piston and transferred to its position, which is essentially close to the inlet channel, to form the media channel.

Diese und weitere Merkmale von bevorzugten Weiterbildungen der Erfindung gehen auch aus der Beschreibung und den Zeich­nungen hervor, wobei die einzelnen Merkmale jeweils für sich allein oder zu mehreren in Form von Unterkombinationen bei einer Ausführungsform der Erfindung und auf anderen Gebieten verwirklicht sein können. Ein Ausführungsbeispiel der Erfin­dung ist in den Zeichnungen dargestellt und wird im folgen­den näher erläutert. In den Zeichnungen zeigen:

  • Fig. 1 eine erfindungsgemäße Austragvorrichtung in Ansicht;
  • Fig. 2 einen Ausschnitt der Fig. 1 im vergrößerten Axialschnitt und in Ausgangsstellung;
  • Fig. 3 den Ausschnitt gemäß Fig. 2, jedoch in Aus­tragstellung;
  • Fig. 4 einen Ausschnitt der Fig. 3 in nochmals ver­größerter Darstellung.
These and further features of preferred developments of the invention are also apparent from the description and the drawings, the individual features being able to be implemented individually or in groups in the form of sub-combinations in one embodiment of the invention and in other fields. An embodiment of the invention is shown in the drawings and is explained in more detail below. The drawings show:
  • 1 shows a discharge device according to the invention in view;
  • Fig. 2 shows a detail of Figure 1 in an enlarged axial section and in the starting position.
  • 3 shows the detail according to FIG. 2, but in the discharge position;
  • Fig. 4 shows a detail of Fig. 3 in a further enlarged view.

Die in den Fig. 1 bis 4 dargestellte Austragvorrichtung 1 ist zur druckdichten, ggf. lösbaren Befestigung am verengten Hals eines flaschenförmigen Behälters 2 vorgesehen, der einen Speicherraum für das Medium und oberhalb des Medien­spiegels einen Druckgasspeicher bildet, wobei die in den Behälterhals eingreifende Austragvorrichtung 1 annähernd den gesamten Hals ausfüllt.The discharge device 1 shown in FIGS. 1 to 4 is provided for pressure-tight, possibly detachable attachment to the narrowed neck of a bottle-shaped container 2, which forms a storage space for the medium and a compressed gas storage above the media level, the discharge device 1 engaging in the container neck fills almost the entire neck.

Die Austragvorrichtung 1 weist eine im wesentlichen achssym­metrische, als Schubkolbenpumpe ausgebildete Druckluft-Pumpe 3 auf, die mit einer den Behälterhals übergreifenden Befe­ stigungskappe 4, wie einer mit einem Innengewinde versehene Überwurfkappe gegenüber dem Behälterhals zentriert sowie unter Zwischenlage einer Ringdichtung gegen die Stirnfläche des Behälterhalses gespannt ist. Die Druckluft-Pumpe 3 weist ein im wesentlichen zylindrisches Zylindergehäuse 5 auf, das verhältnismäßig eng an den Innenquerschnitt des Halses des in Fig. 2 strichpunktiert angedeuteten Behälters 2 angepaßt und im wesentlichen napfförmig ausgebildet ist. An seinem offenen, über den Behälterhals vorstehenden Ende weist das Zylindergehäuse 5 einen über einen ringscheibenförmigen An­satz an es anschließenden erweiterten Gehäuseflansch 6 auf, in dessen das zugehörige Ende des Zylindergehäuses 5 bilden­den ringförmigen Mantelteil ein im wesentlichen ringschei­benförmiger Zylinderdeckel 7 eingesetzt und durch federndes Einsprengen so axial gesichert befestigt ist, daß der Zylin­derdeckel 7 mit Vorspannung an der Innenseite des ringschei­benförmigen Ansatzes anliegt und ein vorspringender Ringan­satz zentriert in das Zylindergehäuse 5 eingreift. Die zuge­hörige Schulterfläche des Gehäuseflansches 6 dient zur Ab­stützung gegenüber der Stirnfläche des Behälterhalses bzw. an der zugehörigen Ringdichtung. Der Zylinderflansch 6 greift mit seinem Außenumfang und seiner Stirnfläche zen­triert in eine ringförmig abgesetzte Innenausnehmung der Befestigungskappe 4 ein, mit welcher er gegen den Behälter­hals zu spannen ist. Die Druckluft-Pumpe 3 bildet insofern eine gemeinsam mit der Kappe 4 montierbare Baueinheit.The discharge device 1 has an essentially axially symmetrical compressed air pump 3, which is designed as a thrust piston pump and is equipped with a device that extends across the neck of the container Stigungskappe 4, as a screw cap provided with an internal thread is centered opposite the container neck and is tensioned with the interposition of an annular seal against the end face of the container neck. The compressed air pump 3 has an essentially cylindrical cylinder housing 5, which is relatively closely matched to the inner cross section of the neck of the container 2 indicated by dash-dotted lines in FIG. 2 and is essentially cup-shaped. At its open end projecting beyond the neck of the container, the cylinder housing 5 has an enlarged housing flange 6 which adjoins it via an annular disk-shaped projection, in the annular jacket part of which forms the associated end of the cylinder housing 5, an essentially annular disk-shaped cylinder cover 7 is inserted and is axially so by resilient detonation is securely fastened that the cylinder cover 7 rests with prestress on the inside of the annular disk-shaped projection and a projecting annular projection engages in the center of the cylinder housing 5. The associated shoulder surface of the housing flange 6 serves to support the front surface of the container neck or on the associated ring seal. The cylinder flange 6 engages with its outer circumference and its end face centered in an annular recessed inner recess of the fastening cap 4, with which it can be clamped against the container neck. The compressed air pump 3 thus forms a structural unit which can be assembled together with the cap 4.

Das Zylindergehäuse 5 umschließt eine annähernd über seine gesamte Länge reichende Pumpenkammer 8 der Druckluft-Pumpe 3 und bildet mit der Innenfläche seines Mantels eine Kolben­laufbahn 9 für einen topfförmigen, im wesentlichen einteili­gen Pumpkolben 10, der mit zwei, an den Enden seines Mantel­teiles liegenden, entgegengesetzt schräg gerichteten Dicht­lippen an dieser Kolbenlaufbahn 9 abgedichtet geführt ist. Der Pumpkolben 10 ist mit einem von seinem Boden ausgehen­den, rohrförmigen und im Außendurchmesser weniger als halb so großen sowie in seiner Mittelachse liegenden Kolbenschaft 11 einteilig ausgebildet, der im wesentlichen über die Au­ßenseite des Bodens des Pumpkolbens 10 vorsteht und eine zentrale Öffnung des Zylinderdeckels 7 sowie den zugehörigen Abschnitt der Befestigungskappe 4 nach außen durchsetzt. An dem Kolbenschaft 11 ist ein über das zugehörige Ende der Befestigungskappe 4 vorstehender Betätigungskopf 12 befe­stigt, der in einen im Durchmesser reduzierten Endkragen der Befestigungskappe 4 eingreift und in diesem in Achsrichtung der Pumpe 3 annähernd bis zum Anschlag am Zylinderdeckel 7 verschiebbar ist. Der Betätigungskopf 12 weist an der Innen­seite einen rohrförmigen Stutzen auf, in welchen der Kol­benschaft 11 zur Befestigung eingreift und der am Ende des Pumphubes durch den Zylinderdeckel 7 bis in die Pumpenkammer 8 ragt. Zur Ausgangsstellung gemäß Fig. 2 ist der Pumpkolben 10 mit einer innerhalb der Pumpenkammer 8 liegenden Rück­stellfeder 13 belastet, die als Schraubendruckfeder ausge­bildet ist und mit einem Ende an der Innenseite des Napfbo­dens 16 des Pumpkolbens 10 sowie mit dem anderen Ende am ringschulterförmigen Napfboden 17 des Zylindergehäuses 5 vorgespannt anliegt.The cylinder housing 5 encloses a pump chamber 8 of the compressed air pump 3 that extends almost over its entire length and forms with the inner surface of its jacket a piston raceway 9 for a pot-shaped, essentially one-piece pump piston 10, the opposite with two at the ends of its jacket part obliquely directed sealing lips is guided sealed on this piston raceway 9. The pump piston 10 is tubular with an outgoing from its bottom and less than half in outside diameter piston shaft 11, which is so large and lies in its central axis, which protrudes essentially beyond the outside of the bottom of the pump piston 10 and penetrates a central opening of the cylinder cover 7 and the associated section of the fastening cap 4 to the outside. An actuating head 12 protruding from the associated end of the fastening cap 4 is fastened to the piston shaft 11, which engages in an end collar of the fastening cap 4 with a reduced diameter and can be displaced in the axial direction of the pump 3 up to the stop on the cylinder cover 7. The actuating head 12 has on the inside a tubular socket, in which the piston shaft 11 engages for fastening and which projects through the cylinder cover 7 into the pump chamber 8 at the end of the pump stroke. 2, the pump piston 10 is loaded with a return spring 13 located within the pump chamber 8, which is designed as a helical compression spring and with one end on the inside of the bowl bottom 16 of the pump piston 10 and the other end on the ring-shoulder-shaped bowl bottom 17 of the cylinder housing 5 biased.

Die Druckluft-Pumpe 3 weist zur Befüllung und Entleerung der Pumpenkammer 8 mindestens ein Ansaug-Rückschlagventil 14 sowie mindestens ein Ausstoß-Rückschlagventil 15 auf. Als Ventile sind Lippen-, Klappen-, Kugel-, Schlauch- oder ähn­liche Ventile denkbar, wobei es vorteilhaft ist, wenn beide Rückschlagventile 14, 15 im wesentlichen gleich bzw. gleich­artig ausgebildet sind. Im dargestellten Ausführungsbeispiel ist der Ventilsitz des jeweiligen Rückschlagventiles 14 bzw. 15 durch eine ringförmige Stirnseite des zugehörigen Bodens, nämlich im Falle des Ansaug-Rückschlagventiles 14 durch die Innenseite des Napfbodens 16 des Pumpkolbens 10 und im Falle des Ausstoß-Rückschlagventiles 15 durch die Außenseite der Bodenwand 17 des Zylindergehäuses 5 gebildet. Der Ventil­schließteil 18 des vollständig an dem Pumpkolben 10 vorgese­ henen und mit diesem als Ganzes verschiebbaren Ansaug-Rück­schlagventiles 14 ist durch eine elastische, sehr flache bzw. plättchenförmige Ringscheibe gebildet, die über nur wenig mehr als das Doppelte ihrer Dicke axial beweglich zu sein braucht und in Schließlage einen Kranz von Ansaugöff­nungen abdeckt, welche im Napfboden 16 unmittelbar benach­bart zu und um den Kolbensachaft 11 als Durchgangsöffnungen so vorgesehen sind, daß über den Endkragen der Kappe 4 und durch die zentrale Öffnung des Zylinderdeckels 7 in sie und damit in die Pumpenkammer 8 Außenluft angesaugt werden kann. Zur Lagesicherung in der Öffnungstellung ist für den Ventil­schließteil 18 an dessen von dem Ventilsitz abgekehrten Sei­te mit entsprechend geringem Abstand ein scheibenförmiger Anschlagring 20 im Pumpkolben 10 bzw. in dessen Napfboden 16 befestigt, wobei der Anschlagring 20 durch Öffnungen am Au­ßenumfang, am Innenumfang und/oder im Bereich zwischen die­sen Umfangskanten luftdurchlässig ist. Das Ausstoß-Rück­schlagventil 15 weist einen entsprechenden, jedoch im Durch­messer größeren Ventilschließteil 19 sowie einen zugehörigen Anschlagring 21 auf, wobei jedoch diese beiden Teile in einem über die Außenseite der Bodenwand 17 vorstehenden, eine Verlängerung der Mantelwand des Zylindergehäuses 5 bil­denden Ringansatz liegen und der Kranz von Druckluftöffnun­gen nahe benachbart zum Innenumfang des Zylindergehäuses 5 vorgesehen ist. Bei Betätigung der Druckluft-Pumpe 3 durch Niederdrücken des Betätigungskopfes 12 wird der Pumpkolben 10 entgegen der Kraft der Rückstellfeder 13 sowie unter ent­sprechender Verkleinerung der Pumpenkammer 8 in Richtung zur Bodenwand 17 verfahren, wobei das Ansaug-Rückschlagventil 14 selbsttätig geschlossen ist, während das Ausstoß-Rückschlag­ventil 15 geöffnet ist, so daß in den Behälter 2 Luft ge­pumpt und dadurch ein Überdruck erzeugt wird. Beim Rückhub des Pumpkolbens 10 schließt das Ausstoß-Rückschlagventil 15 selbsttätig, während das Ansaug-Rückschlagventil 15 öffnet, so daß in der beschriebenen Weise Luft in die Pumpenkammer 8 angesaugt wird. Durch Betätigen der Druckluft-Pumpe 3 über mehrere aufeinanderfolgende Pumphübe kann somit der Druck im Behälter 2 je nach Bedarf erhöht werden.The compressed air pump 3 has at least one suction check valve 14 and at least one discharge check valve 15 for filling and emptying the pump chamber 8. Lip, flap, ball, hose or similar valves are conceivable as valves, it being advantageous if both check valves 14, 15 are of essentially the same or similar design. In the illustrated embodiment, the valve seat of the respective check valve 14 or 15 by an annular end face of the associated bottom, namely in the case of the suction check valve 14 through the inside of the cup bottom 16 of the pump piston 10 and in the case of the discharge check valve 15 through the outside of the Bottom wall 17 of the cylinder housing 5 is formed. The valve closing part 18 of the entire vorgesese on the pump piston 10 Henen and with this as a whole displaceable suction check valve 14 is formed by an elastic, very flat or plate-shaped annular disc that needs to be axially movable over just a little more than twice its thickness and in the closed position covers a ring of suction openings, which in Cup bottom 16 immediately adjacent to and around the piston shaft 11 are provided as through openings in such a way that outside air can be sucked in via the end collar of the cap 4 and through the central opening of the cylinder cover 7 into it and thus into the pump chamber 8. To secure the position in the open position, a disk-shaped stop ring 20 is attached to the valve closing part 18 on its side facing away from the valve seat at a correspondingly small distance in the pump piston 10 or in its cup bottom 16, the stop ring 20 being provided through openings on the outer circumference, on the inner circumference and / or is permeable to air in the area between these peripheral edges. The discharge check valve 15 has a corresponding, but larger in diameter valve closing part 19 and an associated stop ring 21, but these two parts are in a projecting beyond the outside of the bottom wall 17 forming an extension of the jacket wall of the cylinder housing 5 and the ring of compressed air openings is provided close to the inner circumference of the cylinder housing 5. When the compressed air pump 3 is actuated by depressing the actuating head 12, the pump piston 10 is moved in the direction of the bottom wall 17 against the force of the return spring 13 and with a corresponding reduction in the size of the pump chamber 8, the suction check valve 14 being automatically closed while the exhaust Check valve 15 is open so that air is pumped into the container 2 and thereby an excess pressure is generated. On the return stroke of the pump piston 10, the discharge check valve 15 closes automatically, while the suction check valve 15 opens, so that air flows into the pump chamber 8 in the manner described is sucked in. By actuating the compressed air pump 3 over several successive pumping strokes, the pressure in the container 2 can thus be increased as required.

Die Austrag-Vorrichtung 1 weist einen gegenüber der Pumpen­kammer 8 im wesentlichen ständig geschlossenen Auslaßkanal 22 auf, der durch den Kolbenschaft 11 hindurchgeführt bzw. im wesentlichen durch diesen gebildet ist und am äußeren Ende in eine Austragöffnung 23 führt, die nach außen ins Freie führt und am Betätigungskopf 12 vorgesehen ist. Die Austragöffnung 23 kann in der Achse der Pumpe 3 liegen oder aber, wie dargestellt, durch das Ende eines im Winkel dazu liegenden Endkanales im Betätigungskopf 12 gebildet sein. Ferner weist die Austragvorrichtung 1 einen im wesentlichen in der Achse der Pumpe 3 liegenden Zulaufkanal 24 auf, der mit seiner Einlaßöffnung nahe von dem der Pumpe 3 gegenüber­liegenden, geschlossenen bzw. einteilig mit dem übrigen Be­hälter ausgebildeten Behälterboden ausgeht und beispielswei­se durch ein schlauchartig elastisches oder biegesteifes Steigrohr 25 gebildet ist, welches an dem Zylindergehäuse 5 befestigt ist. Zu diesem Zweck ist mit der Bodenwand 17 des Zylindergehäuses 5 einteilig eine in die Pumpenkammer 8 vor­stehende, napfförmige Muffe 26 verbunden, die annähernd über die Hälfte der Länge der Pumpenkammer 88 reicht und deren Außenweite gegenüber der lichten Weite der Pumpenkammer 8 derart kleiner ist, daß die Druckluftöffnungen in der Boden­wand 17 zwischen dem Außenumfang dieser Muffe 26 und der Kolbenlaufbahn 9 liegen. Auf dem Außenumfang der Muffe 26 ist auch die Rückstellfeder 13 zentriert geführt. In die an der Außenseite der Bodenwand 17 offene Muffe 26 ist das zu­gehörige Ende des Steigrohres 25 eingesetzt und beispiels­weise durch Klemmung bzw. Pressung lagestarr befestigt. Das Eintrittsende des Auslaßkanales 22 liegt als stutzenförmiger Ansatz an der Innenseite des Napfbodens 16 des Pumpkolbens 10, an welcher der Kolbenschaft 11 mit einer entsprechenden Verlängerung geringfügig und vom Rückschlagventil 14 umgeben vorsteht.The discharge device 1 has an outlet channel 22 which is essentially constantly closed with respect to the pump chamber 8 and which is guided through or essentially formed by the piston shaft 11 and leads at the outer end into a discharge opening 23 which leads to the outside and is provided on the actuating head 12. The discharge opening 23 can lie in the axis of the pump 3 or, as shown, can be formed by the end of an end channel lying at an angle to it in the actuating head 12. Furthermore, the discharge device 1 has an inlet channel 24 lying essentially in the axis of the pump 3, which has an inlet opening close to the container bottom opposite the pump 3, closed or formed in one piece with the rest of the container, and for example by a hose-like elastic or rigid Riser pipe 25 is formed, which is attached to the cylinder housing 5. For this purpose, a cup-shaped sleeve 26 protruding into the pump chamber 8 is connected in one piece to the bottom wall 17 of the cylinder housing 5 and extends approximately over half the length of the pump chamber 88 and the outside width of the pump chamber 8 is so small that the inside width is smaller the compressed air openings in the bottom wall 17 lie between the outer circumference of this sleeve 26 and the piston raceway 9. The return spring 13 is also guided centered on the outer circumference of the sleeve 26. In the open on the outside of the bottom wall 17 sleeve 26, the associated end of the riser 25 is inserted and fixed, for example, by clamping or pressing. The inlet end of the outlet channel 22 is in the form of a socket on the inside of the cup base 16 of the pump piston 10, on which the piston shaft 11 protrudes slightly with a corresponding extension and is surrounded by the check valve 14.

Das Austrittsende des Zulaufkanales 24 liegt dazu achsgleich sowie gegenüber im Boden der Muffe 26. An diesen Enden weist der Auslaßkanal 22 eine Übertrittsöffnung 27 und der Zulauf­kanal 24 eine Übertrittsöffnung 28 auf, die achsgleich zu­einanderliegend gleiche Weite sowie eine Weite haben, die geringfügig größer als die kleinste lichte Weite des jewei­ligen Kanales 22, 24 ist. Die Übertrittsöffnungen 27, 28 durchsetzen einander zugekehrte Stirnflächen 29, 30 einer­seits des zugehörigen Endes des Kolbenschaftes 11 und ande­rerseits der Bodenwand der Muffe 26. Obwohl auch eine anders geartete, beispielsweise gesonderte bzw. mittelbare Überfüh­rung des Auslaßkanales 22 in eine Austragstellung denkbar ist, ist durch die beschriebene Ausbildung der Auslaßkanal 22 mit dem Betätigungskopf 12 und dadurch gemeinsam mit der Pumpenbetätigung in seine Austragstellung gemäß den Fig. 3 und 4 überführbar, in welcher die Übertrittsöffnungen 27, 28 dadurch innerhalb der Pumpenkammer 8 aneinander angeschlos­sen sind, daß die Stirnfläche 29, 30, die auch komplementär kegelstumpfförmig ausgebildet sein könnten, im wesentlichen druckdicht in einer Ebene aneinander anliegen. In dieser Austragstellung liegt das zugehörige Ende des Pumpkolbens 10 noch mit einem geringen Abstand von der Bodenwand 17, so daß also die Endstellung des Pumphubes durch den Anschlag der beiden Stirnflächen 29, 30 aneinander begrenzt ist. In die­ser Austragstellung bilden der Zulaufkanal 24 und der Aus­laßkanal 22 einen vom Einlaßende bis zur Austragöffnung 23 ununterbrochen durchgehenden Medienkanal 31, der zwar die Pumpenkammer 8 durchquert, gegenüber dieser jedoch im we­sentlichen abgedichtet ist, da die Stirnfläche 29, 30, ggf. unter Verwendung zusätzlicher Dichtglieder, als Dichtflächen vorgesehen sind.For this purpose, the outlet end of the inlet channel 24 is axially aligned and opposite in the bottom of the sleeve 26. At these ends, the outlet channel 22 has a transition opening 27 and the inlet channel 24 has a transition opening 28 which have the same width and a width which are slightly larger than that is the smallest clear width of the respective channel 22, 24. The transfer openings 27, 28 pass through mutually facing end faces 29, 30 on the one hand of the associated end of the piston skirt 11 and on the other hand the bottom wall of the sleeve 26. Although a different type, for example a separate or indirect transfer of the outlet channel 22 into a discharge position is also conceivable, is by 3 and 4, in which the transfer openings 27, 28 are connected to one another within the pump chamber 8 in that the end face 29, 30 , which could also have a complementary frustoconical shape, rest against one another in a substantially pressure-tight manner. In this discharge position, the associated end of the pump piston 10 is still a short distance from the bottom wall 17, so that the end position of the pump stroke is limited by the abutment of the two end faces 29, 30. In this discharge position, the inlet channel 24 and the outlet channel 22 form a media channel 31 which is continuous from the inlet end to the discharge opening 23 and which, although it passes through the pump chamber 8, is essentially sealed off from it, since the end face 29, 30, optionally with the use of additional ones Sealing members are provided as sealing surfaces.

Der Auslaßkanal 22 ist mit einem zweckmäßig im Bereich sei­ner Übertrittsöffnung 27 liegenden Auslaß-Ventil 32 ver­schließbar, während der Zulaufkanal 24 mit einem ebenfalls zweckmäßig im Bereich seiner Übertrittsöffnung 28 liegenden Zulauf-Ventil 33 verschließbar ist. Beide Ventile sind zweckmäßig als mechanisch durch Druck- bzw. Axialbetätigung zu öffnende Kegelsitzventile sowie im wesentlichen so gleich ausgebildet, daß die beiden Ventilschließteile 34, 35 sowie die zugehörigen Ventilfedern gegeneinander austauschbar mon­tiert werden können. Das Auslaß-Ventil 32 schließt gegen den Überdruck in der Pumpenkammer 8, während das Zulauf-Ventil 33 gegen den Überdruck im Behälter 2 schließt. Beide Ventile sind durch Handbetätigung gegen Federkraft zu öffnen, wobei statt einer gesonderten Betätigung die Anordnung so getrof­fen ist, daß beide Ventile im wesentlichen gleichzeitig mit dem Betätigungskopf 12 geöffnet werden können. Der Ventil­schließteil 35 des Zulauf-Ventiles 33 weist zu diesem Zweck einen im Bewegungsweg eines Öffnungs- bzw. Anschlaggliedes des Betätigungskopfes 12 liegenden Mitnahme-Anschlag 36 auf, der durch die Endfläche eines über das verjüngte Ende des kegelförmigen Ventilschließteiles 35 vorstehenden Stößels 37 gebildet ist. In entsprechender Weise weist der Ventil­schließteil 34 des Auslaß-Ventiles 32 einen im relativen Bewegungsweg eines Öffnungs- bzw. Anschlaggliedes des gegen­über dem Behälter 2 bzw. der Kappe 4 feststehenden Teiles der Pumpe liegenden, in gleicher Weise durch das Ende eines Stößels 39 gebildeten Anschlag 38 auf. Der Anschlag 36 bzw. 38 des einen Ventilschließteiles 35 bzw. 34 bildet das Öffnungs- bzw. Anschlagglied 38 bzw. 36 für den anderen Ven­tilschließteil 34 bzw. 35, so daß die beiden Ventile 32, 33 sich am Ende des Pumphubes der Druckluft-Pumpe 3 gegenseitig entgegen der Kraft ihrer Schließfeder dadurch öffnen, daß sie sich gegenüber ihren Ventilsitzen in entgegengesetzter Richtung bewegen. Die Anschläge 36, 38 bzw. die Stößel 37, 39 stehen zu diesem Zweck durch die Übertrittsöffnungen 28, 27 in Schließlage über die Stirnflächen 30, 29 vor und lie­gen in Öffnungs- bzw. Austragstellung gemäß den Fig. 3 und 4 etwa in der Ebene dieser aneinanderliegenden Stirnflächen. Der Ventilsitz bzw. das Ventilgehäuse für den Ventil­ schließteil 34 des Auslaß-Ventiles 32 ist unmittelbar durch den Kolbenschaft 11 bzw. den Pumpkolben 10 gebildet, wobei der Ventilsitz durch die innere Begrenzung einer von der Übertrittsöffnung 27 durchsetzten ringförmigen Stirnwand gebildet ist, welche an ihrer Außenseite die Stirnfläche 29 aufweist. In das vom Pumpkolben 10 abgekehrte Ende des Kol­benschaftes 11 ist eine innerhalb des Stutzens des Betäti­gungskopfes 12 liegende Bundhülse 40 eingesetzt, an deren innerem Ende das zugehörige Ende der als Schraubendruckfeder ausgebildeten, innerhalb des Auslaßkanales 22 liegenden Ven­tilfeder 41 abgestützt ist, deren anderes Ende einen Zen­trierdorn an der Rückseite des Ventilschließteiles 34 um­gibt. Das Ventilgehäuse 42 des Zulauf-Ventiles 33 ist durch einen gesonderten, muffen- bzw. napfförmigen Bauteil gebil­det, der mit einem Außenmantel durch Einsetzen in der Muffe 26 verankert ist und in einem Innenmantel den Ventilschließ­teil 35 sowie die zugehörige Ventilfeder 43 aufnimmt, wobei das zugehörige Ende des Steigrohres 25 verspannt zwischen den Außen- und den Innenmantel des Ventilgehäuses 42 ein­greift und dadurch befestigt ist. Der Ventilsitz dieses Zu­lauf-Ventiles 33 ist durch die Innenseite der Bodenwand der Muffe 26 gebildet.The outlet channel 22 can be closed with an outlet valve 32 which is expediently located in the region of its transition opening 27, while the inlet channel 24 also with one Expediently in the region of its transfer opening 28 inlet valve 33 can be closed. Both valves are expediently designed as conical seat valves that can be opened mechanically by pressure or axial actuation, and essentially so that the two valve closing parts 34, 35 and the associated valve springs can be mounted interchangeably. The outlet valve 32 closes against the overpressure in the pump chamber 8, while the inlet valve 33 closes against the overpressure in the container 2. Both valves can be opened by hand against spring force, whereby instead of a separate actuation the arrangement is such that both valves can be opened essentially simultaneously with the actuating head 12. For this purpose, the valve closing part 35 of the inlet valve 33 has a driving stop 36 lying in the path of movement of an opening or stop member of the actuating head 12, which is formed by the end face of a plunger 37 projecting beyond the tapered end of the conical valve closing part 35. Correspondingly, the valve closing part 34 of the outlet valve 32 has a stop 38 in the relative movement path of an opening or stop member of the part of the pump which is fixed relative to the container 2 or the cap 4, and is formed in the same way by the end of a plunger 39 on. The stop 36 or 38 of the one valve closing part 35 or 34 forms the opening or stop member 38 or 36 for the other valve closing part 34 or 35, so that the two valves 32, 33 are at the end of the pump stroke of the compressed air pump 3 open each other against the force of their closing spring by moving in opposite directions with respect to their valve seats. For this purpose, the stops 36, 38 and the plungers 37, 39 protrude through the transfer openings 28, 27 in the closed position over the end faces 30, 29 and are approximately in the plane in the open or discharge position according to FIGS. 3 and 4 of these abutting end faces. The valve seat or the valve housing for the valve Closing part 34 of the outlet valve 32 is formed directly by the piston shaft 11 or the pump piston 10, the valve seat being formed by the inner boundary of an annular end wall penetrated by the transfer opening 27 and having the end face 29 on its outside. In the end of the piston shaft 11 facing away from the pump piston 10, a collar sleeve 40 is inserted within the socket of the actuating head 12, at the inner end of which the associated end of the valve spring 41, embodied as a helical compression spring and lying within the outlet channel 22, is supported, the other end of which has a centering mandrel surrounds at the rear of the valve closing part 34. The valve housing 42 of the inlet valve 33 is formed by a separate, sleeve or cup-shaped component which is anchored to an outer jacket by insertion in the sleeve 26 and receives the valve closing part 35 and the associated valve spring 43 in an inner jacket, the associated one End of the riser 25 clamped between the outer and inner sheath of the valve housing 42 engages and is thereby fixed. The valve seat of this inlet valve 33 is formed by the inside of the bottom wall of the sleeve 26.

In den Medienkanal und zwar vorzugsweise in den Zulaufkanal 24 mündet ein in den Fig. 2 und 3 nicht näher dargestellter Druckluftkanal 44 gemäß Fig. 4, dessen an den Druckspeicher des Behälters 2 angeschlossener Einlaß versenkt und damit vor Spritzflüssigkeit geschützt innerhalb der Muffe 26 liegt, während sein Auslaß quer zur Achse der Übertrittsöff­nung 28 bzw. des Zulaufkanales 24 gerichtet in das Zulauf­ventil 33 unmittelbar benachbart zu desen Ventilsitz mündet. Der Druckluftkanal 44 weist wesentlich kleinere, gedrosselte Querschnitte als der Medienkanal auf und ist beispielsweise durch eine wendelförmige Nut am Außenumfang des Außenmantels des Ventilgehäuses 42 gebildet, welcher an der Innenfläche der Mantelwand der Muffe 26 anliegt. Dieser wendelförmige, unmittelbar an den Druckspeicher angeschlossene Umfangsab­schnitt des Druckluftkanales 44 geht in einen Stirnabschnitt über, welcher in der an der Bodenwand der Muffe 26 anliegen­den Stirnfläche des Ventilgehäuses 42 vorgesehen ist und statt eines gegen die Kanalachse gerichteten radialen Ver­laufes einen spiralförmigen Verlauf haben kann, so daß die Druckluft stark verwirbelnd in den Zulaufkanal 24 bzw. das zugehörige Ventilgehäuse eintritt.A compressed air duct 44 according to FIG. 4, not shown in FIGS. 2 and 3, opens into the media duct and preferably into the inlet duct 24, the inlet of which is connected to the pressure accumulator of the container 2 sunk and is therefore protected from spray liquid inside the sleeve 26, while its outlet opens transversely to the axis of the transfer opening 28 or the inlet channel 24 into the inlet valve 33 immediately adjacent to the valve seat thereof. The compressed air duct 44 has significantly smaller, throttled cross sections than the media duct and is formed, for example, by a helical groove on the outer circumference of the outer casing of the valve housing 42, which lies against the inner surface of the casing wall of the sleeve 26. This helical, directly connected to the pressure accumulator circumferential section of the compressed air channel 44 merges into an end section which is provided in the end face of the valve housing 42 abutting the bottom wall of the sleeve 26 and can have a spiral course instead of a radial course directed against the channel axis, so that the compressed air swirling into inlet channel 24 or the associated valve housing.

Die Austragvorrichtung arbeitet nach folgendem Verfahren: Durch Niederdrücken des Betätigungskopfes 12 wird in der beschriebenen Weise mit der Druckluft-Pumpe 3 der Druck im Behälter 2 aufgeladen, wobei durch Betätigen der Pumpe 3 nur über einen Teilhub vermieden werden kann, daß Medium ausge­tragen wird. Soll Medium ausgetragen werden, so wird der Betätigungskopf 12 bis zum Anschlag niedergedrückt, wobei die Stößel 37, 39 der Ventile 33, 32 aufeinandertreffen und im wesentlichen gleichzeitig mit dem Anlegen der Stirnflä­chen 29, 30 aneinander die Ventile 32, 33 geöffnet werden, so daß der durchgehende Medienkanal gebildet und vom Einlaß­ende des Zulaufkanales 24 bis zur Austragöffnung 23 durchge­hend geöffnet ist. Dadurch treibt der Überdruck im Behälter 2 das Medium durch den Zulaufkanal 24 unter Umgehung der Pumpenkammer 8 in den Auslaßkanal 22 und von dort durch die Austragöffnung 23 ins Freie. Gleichzeitig wird ein Teil der im Behälter 2 komprimierten Druckluft über den Druckluftka­nal 44 dem durch den Medien- bzw. Zulaufkanal 24 strömenden Medium injektionsartig zugemischt, so daß dieses noch ver­hältnismäßig weit entfernt von der Austragöffnung 23 stark aufgeschäumt werden kann und erst in vollständig aufge­schäumtem Zustand die Austragöffnung 23 verläßt. Zur Unter­stützung der Aufschäumung kann in Strömungsrichtung nach der Zuführung der Aufschäumluft im Medienkanal noch ein Auf­schäumkörper in Form beispielsweise eines Siebes 45 vorgese­hen sein, das zweckmäßig als topfförmiger Körper auf das innere Ende der Bundhülse 40 aufgesteckt ist und somit in­ nerhalb des Auslaßkanales 22 und zwar in Strömungsrichtung unmittelbar nach dem Auslaß-Ventil 32 liegt, so daß auch vom Sieb 45 zur Austragöffnung 23 noch ein verhältnismäßig wei­ter Strömungsweg gegeben ist.The discharge device works according to the following method: By depressing the actuating head 12, the pressure in the container 2 is charged in the manner described with the compressed air pump 3, whereby actuation of the pump 3 can only avoid a partial stroke that medium is discharged. If medium is to be discharged, the actuating head 12 is pressed down as far as it will go, the plungers 37, 39 of the valves 33, 32 meeting one another and the valves 32, 33 being opened substantially simultaneously with the application of the end faces 29, 30 to one another, so that the continuous media channel is formed and is continuously open from the inlet end of the inlet channel 24 to the discharge opening 23. As a result, the excess pressure in the container 2 drives the medium through the inlet channel 24, bypassing the pump chamber 8, into the outlet channel 22 and from there through the discharge opening 23 into the open. At the same time, part of the compressed air compressed in the container 2 is admixed via the compressed air duct 44 to the medium flowing through the media or inlet duct 24 in an injection-like manner, so that it can be foamed up relatively far away from the discharge opening 23 and only in the fully foamed state Discharge opening 23 leaves. To support the foaming, a foaming body in the form of, for example, a sieve 45 can also be provided in the flow direction after the supply of the foaming air in the media channel, which is expediently attached as a cup-shaped body to the inner end of the collar sleeve 40 and thus in is located within the outlet channel 22 in the flow direction immediately after the outlet valve 32, so that there is also a relatively wide flow path from the sieve 45 to the discharge opening 23.

Da unter Umständen, insbesondere bei nicht bestimmungsgemä­ßer Betätigung der Austragvorrichtung 1, kleine Mengen Leck­medium in die Pumpenkammer 8 austreten können, ist in dieser ein Sammelraum 46 für dieses Leckmedium vorgesehen, von wel­chem eine Rücklaufverbindung zum Behälter 2 führt. Der ring­förmige Sammelraum kann in einfacher Weise durch den an die Bodenwand 17 anschließenden, am Ende des Pumphubes vom Pump­kolben 10 nicht erreichten Raum der Pumpenkammer 8 gebildet sein, während die Rücklaufverbindung durch das Ausstoß-Rück­schlagventil 15 bzw. dessen Ventilöffnungen gebildet ist, so daß eventuell in der Pumpenkammer 8 befindliches Leckmedium bereits zu Beginn jedes Pumphubes zwangsweise aus der Druck­luft-Pumpe 3 heraus und zurück in den Behälter 2 gepreßt wird. Die Napföffnung des Pumpkolbens 10 liegt in Richtung des Pumphubes vorne.Since under certain circumstances, especially when the discharge device 1 is not operated as intended, small amounts of leak medium can escape into the pump chamber 8, a collecting space 46 is provided in this for this leak medium, from which a return connection leads to the container 2. The annular collecting space can be formed in a simple manner by the space of the pump chamber 8 adjoining the bottom wall 17 and not reached by the pump piston 10 at the end of the pump stroke, while the return connection is formed by the discharge check valve 15 or its valve openings, so that possibly Leak medium located in the pump chamber 8 is forcibly pressed out of the compressed air pump 3 and back into the container 2 at the beginning of each pump stroke. The cup opening of the pump piston 10 lies in the direction of the pump stroke at the front.

Claims (10)

1. Austragvorrichtung (1) für Medien, dadurch gekennzeich­net, daß sie mindestens eine Pumpe (3) aufweist.1. discharge device (1) for media, characterized in that it has at least one pump (3). 2. Austragvorrichtung, insbesondere nach Anspruch 1, da­durch gekennzeichnet, daß sie für in einem Behälter (2) gespeicherte Medien eine durch Druckbetätigung mit einer Handhabe (12) betätigbare, eine Pumpenkammer (8) aufweisenden Pumpe (3) sowie einen in einer Austrag­stellung (Fig. 3) der Vorrichtung geöffneten, zu einer Austragöffnung (23) führenden Auslaßkanal (22) für das Medium aufweist, dem ein gegen Austragrichtung ver­schließbarer Zulaufkanal (24) für das gespeicherte Me­dium zugeordnet ist, daß die Pumpe als Druckluft-Pumpe (3) mit einem zum Behälter (2) führenden Druckluftan­schluß ausgebildet ist und daß der Austragkanal (22) und der Zulaufkanal (24) in der Austragstellung (Fig. 3) zur Bildung mindestens eines Medienkanales (31) im wesentlichen unter Umgehung der Pumpenkammer (8) unmittelbar aneinander angeschlossen sind.2. Discharge device, in particular according to claim 1, characterized in that for a stored in a container (2) media, a pressure actuation with a handle (12), a pump chamber (8) having a pump (3) and one in a discharge position ( Fig. 3) of the device open, leading to a discharge opening (23) outlet channel (22) for the medium, to which a closable against discharge direction inlet channel (24) for the stored medium is assigned that the pump as a compressed air pump (3) is formed with a compressed air connection leading to the container (2) and that the discharge channel (22) and the inlet channel (24) are in the discharge position (Fig. 3) to form at least one media channel (31) essentially bypassing the pump chamber (8) directly connected to each other. 3. Austragvorrichtung, insbesondere nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß mindestens ein in den Medienkanal (31), insbesondere in den Zulaufkanal (24), führender Druckluftkanal (44) für Aufschäumluft o.dgl., vorgesehen ist, daß vorzugsweise mindestens ein Kanal, insbesondere der Auslaßkanal (22), aus einer vom ande­ren Kanal (24) getrennten Ausgangsstellung (Fig. 2) in eine an diesen anderen Kanal (24) angeschlossene und zu diesem beispielsweise achsgleiche Austragstellung (Fig. 3) überführbar gelagert ist, daß vorzugsweise der Austragkanal (22) zur Überführung mit einem ggf. die Auslaßöffnung (23) aufweisenden Betätigungskopf (12) für die Druckluft-Pumpe (3) verbunden, insbesondere im wesentlichen lagestarr und/oder achsgleich zum Zulauf­kanal (4) in dem Betätigungskopf (12) angeordnet sowie am Ende des Pumphubes (Fig. 3) an den Zulaufkanal (24) angeschlossen ist und daß vorzugsweise der Austragkanal (22) und der Zulaufkanal (24) in der Austragstellung (Fig. 3) im wesentlichen mit einander zugekehrten, ins­besondere ebenen Stirnflächen (29, 30) aneinander an­liegen bzw. der überführbare Kanal (22) in Richtung seiner Mittelachse verschiebbar gelagert ist.3. Discharge device, in particular according to claim 1 or 2, characterized in that at least one in the media channel (31), in particular in the inlet channel (24), leading compressed air channel (44) for foaming air or the like is provided, that preferably at least a channel, in particular the outlet channel (22), is mounted from an initial position (FIG. 2) separated from the other channel (24) into a discharge position (FIG. 3) connected to this other channel (24) and, for example, axially identical to this, that the discharge channel (22) is preferably connected for transfer to an actuating head (12) for the compressed air pump (3), which may have the outlet opening (23), in particular essentially rigid and / or axially aligned with the inlet channel (4) in the actuating head ( 12) and at the end of the pump stroke (Fig. 3) is connected to the inlet channel (24) and that preferably the discharge channel (22) and the inlet channel (24) in the discharge position (Fig. 3) essentially Lichen facing each other, in particular flat end faces (29, 30) abut each other or the transferable channel (22) is mounted displaceably in the direction of its central axis. 4. Austragvorrichtung, insbesondere nach einem der vorher­gehenden Ansprüche, dadurch gekennzeichnet, daß der Zulaufkanal (24) mit einem durch Handbetätigung zu öff­nenden Zulauf-Ventil (33) verschließbar ist, das insbe­sondere einen in Schließrichtung federbelasteten Ven­tilschließteil (35) aufweist und am Ende des Pumphubes der Druckluft-Pumpe (3) mit deren Handhabe (12) in Öff­nungstellung überführbar ist, wobei vorzugsweise der Ventilschließteil (35) des Zulauf-Ventiles (33) einen im Bewegungsweg eines Öffnungsgliedes der Handhabe (12) liegenden Anschlag (36), insbesondere einen achsgleich zu ihm liegenden Stößel (37) aufweist, der vorzugsweise durch eine am zugehörigen Ende des Zulaufkanales (24) liegende Übertrittsöffnung (28) für den Auslaßkanal (22) vorsteht.4. Discharge device, in particular according to one of the preceding claims, characterized in that the inlet channel (24) can be closed with an inlet valve (33) which can be opened by hand and which in particular has a valve-closing part (35) which is spring-loaded in the closing direction and at the end of the The pump stroke of the compressed air pump (3) can be moved into the open position with its handle (12), the valve closing part (35) of the inlet valve (33) preferably being one has a stop (36) lying in the path of movement of an opening member of the handle (12), in particular a plunger (37) lying axially to it, which preferably has an outlet opening (28) for the outlet channel (22) located at the associated end of the inlet channel (24) protrudes. 5. Austragvorrichtung, insbesondere nach einem der vorher­gehenden Ansprüche, dadurch gekennzeichnet, daß der Auslaßkanal (22) mit einem Auslaß-Ventil (32) ver­schließbar ist, das insbesondere durch Handbetätigung zu öffnen ist bzw. einen in Schließrichtung federbe­lasteten Ventilschließteil (34) aufweist, der am Ende des Pumphubes der Druckluft-Pumpe (3) mit deren Hand­habe (12) in Öffnungstellung überführbar ist, wobei vorzugsweise der Ventilschließteil (34) des Auslaß-­Ventiles (32) einen auf ein Öffnungsglied auflaufenden Anschlag (38), insbesondere einen achsgleich zu ihm liegenden Stößel (39) aufweist, der bevorzugt durch eine am zugehörigen Ende des Auslaßkanales (42) lie­gende Übertrittsöffnung (27) für den Zulaufkanal (24) vorsteht und das Öffnungsglied für das Zulauf-Ventil (33) bildet.5. Discharge device, in particular according to one of the preceding claims, characterized in that the outlet channel (22) can be closed with an outlet valve (32) which can be opened in particular by manual operation or has a valve-closing part (34) which is spring-loaded in the closing direction, which at the end of the pumping stroke of the compressed air pump (3) can be moved into its open position with its handle (12), the valve closing part (34) of the outlet valve (32) preferably having a stop (38) running onto an opening member, in particular an axially aligned one has plunger (39) lying towards it, which preferably protrudes through an overflow opening (27) for the inlet channel (24) at the associated end of the outlet channel (42) and forms the opening member for the inlet valve (33). 6. Austragvorrichtung, insbesondere nach einem der vorher­gehenden Ansprüche, dadurch gekennzeichnet, daß der Medienkanal (31) die Pumpenkammer (8) durchquert und daß insbesondere der Auslaßkanal (22) wenigstens teil­weise einen, einen Pumpkolben (10) der Druckluft-Pumpe (3) durchsetzenden bzw. einteilig mit dem Pumpkolben (10) ausgebildeten, Bauteil bildet, wobei vorzugsweise der Pumpkolben (10) napfförmig und im Napfboden (16) vom Auslaßkanal (22) durchsetzt sowie insbesondere das zugehörige Ende des Zulaufkanales (24) durch eine von einer Bodenwand (17) in die Pumpenkammer (8) ragende Muffe (26) eines Zylindergehäuses (5) gebildet ist.6. discharge device, in particular according to one of the preceding claims, characterized in that the media channel (31) passes through the pump chamber (8) and that in particular the outlet channel (22) at least partially one, a pump piston (10) of the compressed air pump (3) penetrating or formed in one piece with the pump piston (10), component, wherein preferably the pump piston (10) cup-shaped and in the bowl bottom (16) of the outlet channel (22) and in particular that The associated end of the inlet channel (24) is formed by a sleeve (26) of a cylinder housing (5) protruding from a bottom wall (17) into the pump chamber (8). 7. Austragvorrichtung, insbesondere nach einem der vorher­gehenden Ansprüche, dadurch gekennzeichnet, daß zur Ventilsteuerung der Druckluft-Pumpe (3) mindestens ein Rückschlagventil, insbesondere ein Ansaug- und ein Aus­stoß-Rückschlagventil (14 bzw. 15) vorgesehen sind, von denen insbesondere ein Rückschlagventil (14) am Napfbo­den (16) des Pumpkolbens (10) und/oder ein Rückschlag­ventil (15) an der Bodenwand (17) des Zylindergehäuses (5) vorgesehen ist, wobei vorzugsweise das Rückschlag­ventil (14, 15) einen ringscheibenförmigen Ventil­schließteil (18, 19) aufweist, der einem Kranz von Ven­tilöffnungen zugeordnet ist und in Öffnungstellung an einem Anschlagring (20, 21) anliegt.7. Discharge device, in particular according to one of the preceding claims, characterized in that for valve control of the compressed air pump (3) at least one check valve, in particular a suction and a discharge check valve (14 or 15) are provided, of which in particular one Check valve (14) on the bowl bottom (16) of the pump piston (10) and / or a check valve (15) on the bottom wall (17) of the cylinder housing (5) is provided, preferably the check valve (14, 15) being an annular disk-shaped valve closing part (18 , 19), which is assigned to a ring of valve openings and bears in the open position on a stop ring (20, 21). 8. Austragvorrichtung, insbesondere nach einem der vorher­gehenden Ansprüche, dadurch gekennzeichnet, daß eine Einlaßöffnung des Druckluftkanales (44) außerhalb der Pumpenkammer (8) an den Behälter (2) angeschlossen ist, vorzugsweise in der Muffe (26) des Zylindergehäuses (5) liegt.8. Discharge device, in particular according to one of the preceding claims, characterized in that an inlet opening of the compressed air channel (44) outside the pump chamber (8) to the container (2) is connected, preferably in the sleeve (26) of the cylinder housing (5) . 9. Austragvorrichtung, insbesondere nach einem der vorher­gehenden Ansprüche, dadurch gekennzeichnet, daß der Druckluftkanal (44) in unmittelbarer Nähe der Über­trittsöffnung (28) bzw. des Ventiles (33) des Zulaufka­nales (24) mündet und vorzugsweise als wendelförmiger oder geradliniger Kanal im wesentlichen am Außenumfang eines in die Muffe (26) des Zylindergehäuses (5) einge­setzten Ventilgehäuses (42) vorgesehen ist.9. Discharge device, in particular according to one of the preceding claims, characterized in that the compressed air channel (44) opens in the immediate vicinity of the transfer opening (28) or the valve (33) of the inlet channel (24) and preferably essentially as a helical or rectilinear channel on the outer circumference of a valve housing (42) inserted into the sleeve (26) of the cylinder housing (5). 10. Austragvorrichtung, insbesondere nach einem der vorher­gehenden Ansprüche, dadurch gekennzeichnet, daß die Pumpenkammer (8) eine zum Behälter (2) führende Rück­führverbindung für Leckmedium aufweist, die vorzugswei­se von einem bei der Bodenwand (17) des Zylindergehäu­ses (5) liegenden Sammelraum (46) ausgeht und durch das Ausstoß-Rückschlagventil (15) gebildet ist.10. Discharge device, in particular according to one of the preceding claims, characterized in that the pump chamber (8) has a return connection for leakage medium leading to the container (2), preferably from a collecting chamber (5) lying on the bottom wall (17) of the cylinder housing (5). 46) goes out and is formed by the discharge check valve (15).
EP88105328A 1987-04-11 1988-04-01 Device for delivery of liquids Expired - Lifetime EP0286925B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873712327 DE3712327A1 (en) 1987-04-11 1987-04-11 DISCHARGE DEVICE FOR MEDIA
DE3712327 1987-04-11

Publications (3)

Publication Number Publication Date
EP0286925A2 true EP0286925A2 (en) 1988-10-19
EP0286925A3 EP0286925A3 (en) 1988-12-28
EP0286925B1 EP0286925B1 (en) 1991-08-07

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ID=6325427

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88105328A Expired - Lifetime EP0286925B1 (en) 1987-04-11 1988-04-01 Device for delivery of liquids

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EP (1) EP0286925B1 (en)
DE (2) DE3712327A1 (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0392238A1 (en) * 1989-04-08 1990-10-17 Ing. Erich Pfeiffer GmbH & Co. KG Dispensing facility for media
US5425477A (en) * 1994-06-29 1995-06-20 Monturas, S.A. Pump sprayer with stationary discharge
US5480069A (en) * 1993-07-23 1996-01-02 Chesebrough-Pond's Usa Co. Aerosol dispensing device
US5503306A (en) * 1994-10-19 1996-04-02 Aptar Group, Inc. Manually actuated pump
US5505343A (en) * 1994-10-19 1996-04-09 Knickerbocker; Michael G. Manually actuated pump
US5520337A (en) * 1990-03-14 1996-05-28 Ing. Erich Pfeiffer Gmbh & Co. Kg Controllable discharge head for controlling the flow media delivered therethrough
FR2757786A1 (en) * 1996-12-26 1998-07-03 Sanofi Sa LIQUID PACKAGING ASSEMBLY, ESPECIALLY A COSMETIC PRODUCT OR A MEDICINAL PRODUCT
DE19727356A1 (en) * 1997-06-27 1999-01-07 Pfeiffer Erich Gmbh & Co Kg Media Donor
ITMI20121678A1 (en) * 2012-10-08 2014-04-09 Meadwestvaco Calmar S R L MANUAL DRIVE PUMP FOR THE DELIVERY OF FLUID SUBSTANCES, PERFORMED IN STORE
CN104884174A (en) * 2012-09-03 2015-09-02 旻诺维森公司 Foam dispenser

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3860150A (en) * 1971-12-28 1975-01-14 Ciba Geigy Corp Aerosol dispenser for fluid products comprising a piston pump assembly for generating compressed air serving as propellant and a product metering device
FR2319788A1 (en) * 1975-08-01 1977-02-25 Unilever Nv FINGER-ACTUATED PUMP FOR LIQUID DISTRIBUTION

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3860150A (en) * 1971-12-28 1975-01-14 Ciba Geigy Corp Aerosol dispenser for fluid products comprising a piston pump assembly for generating compressed air serving as propellant and a product metering device
FR2319788A1 (en) * 1975-08-01 1977-02-25 Unilever Nv FINGER-ACTUATED PUMP FOR LIQUID DISTRIBUTION

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0392238A1 (en) * 1989-04-08 1990-10-17 Ing. Erich Pfeiffer GmbH & Co. KG Dispensing facility for media
US5520337A (en) * 1990-03-14 1996-05-28 Ing. Erich Pfeiffer Gmbh & Co. Kg Controllable discharge head for controlling the flow media delivered therethrough
US5480069A (en) * 1993-07-23 1996-01-02 Chesebrough-Pond's Usa Co. Aerosol dispensing device
US5425477A (en) * 1994-06-29 1995-06-20 Monturas, S.A. Pump sprayer with stationary discharge
US5503306A (en) * 1994-10-19 1996-04-02 Aptar Group, Inc. Manually actuated pump
US5505343A (en) * 1994-10-19 1996-04-09 Knickerbocker; Michael G. Manually actuated pump
FR2757786A1 (en) * 1996-12-26 1998-07-03 Sanofi Sa LIQUID PACKAGING ASSEMBLY, ESPECIALLY A COSMETIC PRODUCT OR A MEDICINAL PRODUCT
WO1998029192A1 (en) * 1996-12-26 1998-07-09 Sanofi System for packaging a liquid, especially a cosmetic or drug product
DE19727356A1 (en) * 1997-06-27 1999-01-07 Pfeiffer Erich Gmbh & Co Kg Media Donor
US6227415B1 (en) 1997-06-27 2001-05-08 Ing. Erich Pfeiffer Gmbh Thrust piston pump with double valve assembly
DE19727356B4 (en) * 1997-06-27 2006-04-20 Ing. Erich Pfeiffer Gmbh Donor for media
CN104884174A (en) * 2012-09-03 2015-09-02 旻诺维森公司 Foam dispenser
ITMI20121678A1 (en) * 2012-10-08 2014-04-09 Meadwestvaco Calmar S R L MANUAL DRIVE PUMP FOR THE DELIVERY OF FLUID SUBSTANCES, PERFORMED IN STORE

Also Published As

Publication number Publication date
EP0286925B1 (en) 1991-08-07
DE3712327A1 (en) 1988-10-20
DE3864059D1 (en) 1991-09-12
EP0286925A3 (en) 1988-12-28

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