EP1295646B1 - Dosing device with a fluid container and pump therefor - Google Patents

Dosing device with a fluid container and pump therefor Download PDF

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Publication number
EP1295646B1
EP1295646B1 EP02008878A EP02008878A EP1295646B1 EP 1295646 B1 EP1295646 B1 EP 1295646B1 EP 02008878 A EP02008878 A EP 02008878A EP 02008878 A EP02008878 A EP 02008878A EP 1295646 B1 EP1295646 B1 EP 1295646B1
Authority
EP
European Patent Office
Prior art keywords
dosing
valve
pumping
metering
pump
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP02008878A
Other languages
German (de)
French (fr)
Other versions
EP1295646A1 (en
Inventor
Pierre Mbonyumuhire
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
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7701333&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1295646(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Erich Pfeiffer GmbH, Ing Erich Pfeiffer GmbH filed Critical Erich Pfeiffer GmbH
Priority to DE20212898U priority Critical patent/DE20212898U1/en
Priority to CA2460534A priority patent/CA2460534C/en
Priority to JP2003530432A priority patent/JP4210215B2/en
Priority to PCT/EP2002/010421 priority patent/WO2003026805A1/en
Priority to PL367350A priority patent/PL200833B1/en
Priority to US10/490,573 priority patent/US7182226B2/en
Priority to CNB02823152XA priority patent/CN1283365C/en
Priority to BRPI0212901-9A priority patent/BR0212901B1/en
Priority to ARP020103528A priority patent/AR036555A1/en
Publication of EP1295646A1 publication Critical patent/EP1295646A1/en
Publication of EP1295646B1 publication Critical patent/EP1295646B1/en
Application granted granted Critical
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005Components or details
    • B05B11/0037Containers
    • B05B11/0039Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means
    • B05B11/0044Containers 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005Components or details
    • B05B11/0037Containers
    • B05B11/0039Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means
    • B05B11/0044Containers 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
    • B05B11/00444Containers 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 with provision for filtering or cleaning the air flow drawn into the container
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01Single-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
    • B05B11/02Membranes or pistons acting on the contents inside the container, e.g. follower pistons
    • B05B11/026Membranes separating the content remaining in the container from the atmospheric air to compensate underpressure inside the container
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01Single-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
    • B05B11/10Pump 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
    • B05B11/1001Piston pumps
    • B05B11/1016Piston pumps the outlet valve having a valve seat located downstream a movable valve element controlled by a pressure actuated controlling element
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01Single-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
    • B05B11/10Pump 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
    • B05B11/1042Components or details
    • B05B11/1052Actuation means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01Single-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
    • B05B11/10Pump 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
    • B05B11/1042Components or details
    • B05B11/1061Pump priming means
    • B05B11/1063Air exhausted from the pump chamber being discharged into the container during priming
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01Single-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
    • B05B11/10Pump 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
    • B05B11/1042Components or details
    • B05B11/1066Pump inlet valves
    • B05B11/107Gate valves; Sliding valves

Definitions

  • the invention relates to a metering device with a media reservoir and with a pumping device for metering and dispensing a stored in the media storage medium, wherein the pumping device is associated with a pumping chamber, at least one inlet and at least one outlet valve, wherein the inlet valve is designed as a slide valve, the its closing position is movable via a metering, which defines a metering volume for the pumping chamber, and a pumping device for such a metering device.
  • the known metering device has a pump device with a pumping chamber, an inlet valve and an outlet valve.
  • the inlet valve is designed as a slide valve.
  • the slide valve is movable in its closed position via a Dosierhub which defines a Dosiervorlumen for the pumping chamber.
  • a further metering device is known, which is provided with a pump device designed as a thrust piston pump.
  • the pumping device has a flap-like outlet valve.
  • US 4371097 discloses a metering device with a pumping device associated with a spherical inlet valve.
  • a metering device provided with a pump device which is provided with a media reservoir for storing particular liquid, wide or creamy media.
  • the pumping chamber is associated with an outlet valve and an additional outlet valve in the region of an outlet opening, wherein the additional outlet valve is opened via a stepped piston by a fluid pressure built up within the pumping device.
  • a valve body is provided, which is acted upon by a spring bar arrangement in the closing direction.
  • the object of the invention is to provide a metering device of the type mentioned, which allows an exact dosage and application of a medium.
  • the Dosierhub is defined by the length of a housing-side, matched to the contour of the slide valve Dosierkanals, which is limited both to the pumping chamber and to the media storage out by a respective cross-sectional widening. Due to the given metering stroke of the slide valve, a very exact dosage is possible.
  • the metering channel is formed on a releasably positioned component.
  • a suitable component with a dosing channel of different lengths can be used.
  • the length the metering channel defines the metering stroke and thus also the metering volume of the metering device. By simply replacing the component, the metering device is thus suitable for different purposes.
  • the slide valve can be transferred in both stroke directions into an open position.
  • the pumping chamber has at least one housing-side receiving space, which is associated with at least one displacer together with the sliding valve whose shape is matched to the cross-section of the receiving space, that the displacer fills it almost completely when immersed in the receiving space ,
  • This makes it possible to keep the dead space volume of the pumping chamber of the metering device extremely low, whereby a further improved metering accuracy can be achieved.
  • a pump spring arrangement serving as a return stroke drive is arranged outside the flow paths of the medium to be delivered, in particular outside the pumping chamber.
  • the pumping spring arrangement can thus not be attacked by ingredients of the medium to be dispensed.
  • the pump spring arrangement positioned outside the flow paths of the medium also prevents contamination of the medium by the pump spring arrangement, in particular by its corrosion.
  • a return stroke spring arrangement assigned to a valve body of the outlet valve is positioned separately from the flow path of the medium to be delivered.
  • the gearhubfederan Aunt is housed in a medium-tight, separated from the pumping chamber space. This allows the remindhubfederan angel of ingredients of the medium are not attacked.
  • the pumping device is designed as a separate from the metering device and releasably connectable to the metering unit. This makes it possible to carry out the pumping device uniformly and to use in different metering devices.
  • a metering device has a closure lid 1, which can be latched onto a media reservoir, preferably in the form of a bottle-shaped or can-shaped container.
  • the closure lid 1 is cup-shaped and it has on its inner circumference an unspecified annular shoulder, which can be latched onto a corresponding annular flange in a neck region of the media storage.
  • a non-designated, circumferential elastic seal is provided, which is compressed when snapping the closure lid 1 on the neck of the media storage, thus ensuring a tight closure of the media storage.
  • a cup-like receiving part 2 which protrudes opposite to the non-illustrated media storage coaxially to a central longitudinal axis of the closure lid 1 upwards.
  • the receiving part 2 forms an outer, shell-shaped housing part for a pump device described in more detail below, which is part of the metering device according to Fig. 1.
  • a fixed pump housing part 3 is provided, which is provided coaxially to the central longitudinal axis of the closure lid 1 with a discharge channel 6, both down to the media storage out as well as up in the direction of a Dosing 18 is open.
  • a basically known, preferably flexible intake 7 is used in a lower portion of the discharge channel 6, a basically known, preferably flexible intake 7 is used.
  • An upper section of the discharge channel 6 is designed as a metering section 13 in that this upper section, starting from a step-shaped narrowing of the discharge channel 6, constitutes a cylindrical metering channel with a reduced diameter relative to the lower section of the discharge channel 6. Designed as a metering dosing 13 is surrounded by an inner cylinder shell 4.
  • the inner pump housing part 3 Radially in distance from the inner cylinder shell 4, the inner pump housing part 3 forms an outer cylinder shell 5, which - as well as the inner cylinder shell 4 - is integrally formed on the closure lid 1.
  • the outer cylinder shell 5 is aligned coaxially with the inner cylinder shell.
  • annular displacement chamber 14 Between the inner cylinder shell 4 and the outer cylinder shell 5 remains an annular displacement chamber 14, which will be discussed in more detail below and which counts to a pumping chamber.
  • a pump unit is mounted for lifting.
  • the liftable pump unit has an outer pump housing part 8 which is fixedly connected to an inner pumping piston unit 9 to 11.
  • the pumping piston unit 9 to 11 is manufactured separately as a one-piece component and locked in the interior of the outer pump housing part 8.
  • the pumping piston unit has a piston body 9, which forms a cylinder space for a coaxially arranged, liftable outlet valve 16 in an upper area.
  • the outlet valve 16 is so pressure-loaded in the closing direction by a compression spring arrangement, in the present case in the form of a helical compression spring, not described in more detail, that the piston-shaped outlet valve 16 closes the outlet opening 18.
  • the compression spring arrangement is arranged in the interior of the piston-shaped outlet valve 16 and is supported on a bottom of the cylinder space of the piston body 9.
  • the cylinder chamber of the piston body 9 is provided in its upper edge region with a circumferential sealing lip, which tightly fits snugly against the outer jacket of the piston-shaped outlet valve 16.
  • the outlet valve 16 is additionally formed as a filler by almost completely fills the interior of the outer pump housing part 8.
  • the piston body 9 is as a packing designed by being largely adapted with its outer contour to the inner contour of the outer pump housing part 8.
  • a first portion of a pump chamber belonging to the outlet chamber 17 is formed, which is open to the displacement chamber 14 and the metering 13.
  • This first section is open in its upper region radially outward and merges into an annular chamber section of the outlet chamber 17, which is formed between the outer shell of the piston body 9, the outer contour of the outlet valve 16 and the inner contour of the outer pump housing part 8.
  • the piston body 9 forms a coaxially inner valve piston 10 which, together with the inner cylinder jacket 4 in the region of the metering section 13, forms an inlet valve designed as a slide valve for the pumping device.
  • the valve piston 10 which is integrally formed on the piston body 9, provided in a lower region with an annular metering lip 12, which conforms to a dipping of the valve piston 10 in the metering 13 tightly against an inner wall of the metering 13 forming metering channel.
  • the diameter of the metering lip 12 is greater than the diameter of the valve piston 10.
  • the length of the valve piston 10 and the stroke of the piston body 9 and thus the entire liftable pump unit are dimensioned so that the metering lip 12 in an upper, shown in FIG is positioned at a short distance above the metering 13.
  • the metering lip 12 In a lower, fully downwardly pressed end position of the liftable pump unit, the metering lip 12 is in the stepped extension of the discharge channel 6, ie it has been moved beyond the metering 13 also down.
  • the outer diameter of the metering lip 12 is smaller than the diameter of the discharge channel 6 in the step-shaped enlarged area and moreover, the diameter of the valve piston 10 is smaller than the inner diameter of the metering 13, in this lower end position of the pumping unit, a medium exchange between the outlet chamber 17 and the media storage - via the intake 7 - done.
  • the valve piston 10 is surrounded by a bell-shaped displacement piston 11, which abuts circumferentially by means of a lower sealing edge against an inner wall of the annular displacement chamber 14.
  • the cross-section of the bell-shaped displacer 11 is adapted to the cross section of the displacer 14 so that remains virtually no dead space in the displacer in the downwardly moved end position of the piston body, since the displacer 11 is completely immersed in this position in the displacement chamber 14.
  • the remaining between the outer wall of the valve piston 10 and the inner wall of the displacer 11 annular space is tuned in its volume to the body volume of the inner cylinder shell 4, whereby the remaining dead space volume is further reduced in downwardly moving pump unit.
  • the piston-shaped outlet valve 16 is provided in the region of its outer jacket with a plurality of annular steps which form pressure engagement surfaces for opening the outlet valve 16.
  • the cap 19 has a conically widening bell shape, which is slipped over an upper mold portion of the outer pump housing part 8 and comes to an annular shoulder shoulder of the pump housing part 8 axially to the plant.
  • the protective cap 19 is manually releasably latched onto the mold section of the pump housing part 8.
  • the outer diameter of the protective cap 19 is less than the maximum outer diameter of the pump housing part 8.
  • the upper mold section of Pump housing part 8 is designed as a nose olive to allow application of a medium contained in the media storage in the nose.
  • at least one pharmaceutical active substance is contained in the medium stored in the medium reservoir.
  • An actuating handle 20 which is provided on its upper side at least on two opposite sides, each with a finger rest, is latched onto an outer jacket region of the outer pump housing part 8.
  • the finger supports are provided with profilings.
  • a circumferential detent web 21 is provided on the outer circumference of the pump housing part 8, to which at least one detent groove is assigned, into which corresponding inner edge sections of the actuating handle 20 engage axially.
  • the actuating handle 20 is snapped onto the pump housing part 8 by means of a permanent latching connection, i. after the axial locking of the actuating handle 20, this is no longer removable from the pump housing part 8, without being destroyed.
  • the pump housing part 8 has a cylindrical guide casing which is provided in its lower edge region with a plurality of stop cams 23 distributed over the outer circumference of the guide casing at the same height, which are provided with a circumferentially extending latching collar 24 projecting radially inwards. or cup-like receiving parts 2 cooperate.
  • the locking cams 23 and the locking collar 24 form latching profiles, which ensure an axial securing of the liftable pump housing part 8 to the stationary receiving part 2.
  • the latching profiles 23, 24 form an axial support of the pump housing part 8 against the pressure force of a pump spring arrangement 15, which serves as a pump drive for a provision of the liftable pump unit in the starting position shown in Fig. 1.
  • the pump spring arrangement 15 is arranged outside the outer cylinder jacket 5 of the inner stationary pump housing part 8, so that the pump spring arrangement 15 is positioned outside the pump space through which the medium flows.
  • the pumping spring assembly 15 thus can not communicate with the medium, for example, a liquid containing at least one pharmaceutical agent.
  • the actuating handle 20 has an annular securing extension 22, which protrudes downwards as a cylinder jacket and axially projects beyond the receiving part 2 in the upper end position of the pump unit shown in FIG. 1 so that it overlaps the region of the locking profilings 23, 24.
  • the distance between the outer side of the receiving part to the inner wall of the protective extension 22 is preferably less than the radial extent of the locking profiles 23, 24, so that the rigid, annular protective extension 22 provides protection against release of the locking profiles 23, 24 and thus a trigger protection for the pump housing part. 8 forms.
  • a pressure equalization must take place in the case of corresponding pumping operations so as not to impair the function of the pumping device.
  • a pressure compensation device 25, 26, D is provided for this purpose, which is integrated in the closure lid 1.
  • the pressure compensation device has a nozzle bore D, which tapers strongly towards the outside and serves as a pressure compensation opening, the narrowest diameter of which preferably does not exceed 0.2 mm to 0.3 mm. This ensures a gas exchange, a liquid loss, however, is minimized due to the extremely small nozzle bore D. This results in a reduced Evaporation.
  • the reduced evaporation is particularly advantageous for the additionally provided in Fig. 1 filter assembly 25.
  • the filter assembly 25 has a unspecified recording housing for a membrane-shaped filter 26.
  • the receiving housing is inserted into a corresponding receptacle of the closure lid 1 and preferably glued into it or connected in another way firmly with this.
  • the membrane-shaped filter 26 is encapsulated in the illustrated embodiment of the receiving housing and thus integrated in this. Alternatively, it is also possible to laminate the membrane-shaped filter 26 to an upper end edge of the receiving housing.
  • the membrane-shaped filter preferably represents a PP / PTFE membrane or a TPE / PES membrane.
  • the filter 26 serves to prevent contamination of the medium in the media reservoir by sucking through the nozzle bore D in a corresponding pumping operation as a pressure equalization Atmosphere air is purified through the corresponding membrane. Water or moisture ingress is avoided by the filter assembly 25.
  • the inlet valve formed by the valve piston 10 in conjunction with the metering lip 12 and the metering 13 works at a manual actuation of the actuating handle 20 as a slide by the outer pump housing part 8 is moved together with the pumping unit 9 to 11 down. Due to the fact that the metering lip 12 runs at a complete stroke of the pumping unit down below the metering 13 and thus below the stepped heel in the discharge channel 6 into the open, a so-called priming is possible.
  • the defined, and tapered from the remaining discharge channel 6 graduated Dosierrange 13 in conjunction with the slide down into the open to the outside valve piston 10 allows even after the completion of priming, ie after complete filling of the entire medium path in the discharge channel 6 and in the pump or Metering chamber of the pumping device a particularly accurate and reliable dosage.
  • a discharge operation occurs as soon as the fluid pressure in the pumping chamber, i. in particular in the upper region of the outlet chamber 17, which acts on the piston-shaped outlet valve 16, exceeds the counter-pressure applied by the compression spring arrangement.
  • the fluid pressure then presses the outlet valve 16 against the pressure force of the compression spring arrangement down, whereby via the outlet opening 18 of the corresponding discharge of the medium takes place.
  • the outlet port 18 is preferably nozzle-shaped to cause atomization of the discharged medium.
  • the cap 19 is removed before a corresponding discharge.
  • the metering device shown in Fig. 1 consists of a few plastic components, in this case from a total of only six plastic components.
  • a first plastic component is the closure lid 1 in conjunction with the receiving part 2 and the inner pump housing part 3.
  • the second plastic component is formed by the outer pump housing part 8.
  • the third plastic component is the pumping piston unit 9 to 11.
  • the fourth plastic component is the piston-shaped outlet valve 16.
  • the fifth plastic component is provided with the finger pads actuating handle 20 and the last plastic component is the protective cap 19.
  • the piston-shaped outlet valve 16 together with this acting spring arrangement in the Pump piston unit 9 is inserted and then the pumping piston unit 9 is locked together with the outlet valve 16 into the interior of the outer pump housing part 8, whereby an upper end face of the outlet valve 16 is pressed against the corresponding valve seat in the region of the outlet opening 18. Subsequently, the outer pump housing part 8 is inserted axially together with the pumping piston unit 9 to 11 in the fixed plastic component, whereby the latching and axial securing in the region of the locking profiles 23, 24 takes place.
  • the actuating handle 20 is snapped axially from above onto the outer pump housing part 8, whereby the latching connection and axial securing between pump housing part 8 and receiving part 2 of the closure lid 1 is covered and secured.
  • the filter assembly 25 as well as the circumferential seal is used.
  • the closure lid 1 can be placed tightly on a corresponding media storage.
  • the pump spring assembly 15 has been inserted.
  • a pumping device P corresponds to the pumping device described above with reference to FIG. 1, so that reference is made to the detailed description of FIG. 1 for a more detailed explanation of the pumping device P.
  • Functionally identical parts are provided with the same reference number with respect to the embodiment of FIG. 1, but with the addition of the letter "a”.
  • the pumping device P can be produced and detachably connected to it as a separate structural unit, separate from the metering device.
  • the receiving part 2a is indeed also designed in one piece with the inner pump housing part.
  • the inner pump housing part which is surrounded by the pumping spring assembly 15a, together with the receiving part 2a is a separate unit from a closure lid 28 for a container cup B.
  • the closure lid 28 is sleeve-like or ring-shaped and has a receiving recess into which the Receiving part 2a of the pumping device P can be latched by means of a circumferential annular flange.
  • an edge of the receiving recess is provided with an annular detent, which is shown in FIGS. 2 and 3 recognizable, but not specified.
  • a tight and play-free seat of the annular flange and thus of the receiving part 2a in the receiving recess of the closure cover 28 is ensured by a ring seal 29 which is positioned below the annular flange and rests on one edge of the annular receiving recess of the closure lid 28.
  • the closure lid 28 is designed as a plastic part and locked with an upper edge region of the container cup B ° or fixed by crimping with this.
  • the closure lid 28 is provided below the plate edge of the receiving recess with an integrally molded profile ring 27 which protrudes as an extension to the closure lid 28 in the interior of the container cup B.
  • the profile ring is provided with a plurality of parallel and spaced-apart annular ribs 32, which protrude radially to a central longitudinal axis of the closure lid 28 to the outside.
  • several, over the height of the profile ring 27 extending vertically oriented rib webs are provided, which are not designated in more detail in Figs. These Rib webs are arranged distributed over the circumference of the profile ring 27. The sectional view in FIGS. 2 and 3 is pulled through two such rib webs.
  • An actuating handle 20a for the pumping device P corresponds with respect to its pumping operation function of the actuating handle 20 of FIG. 1.
  • the actuating handle 20a is additionally designed as a cup-shaped cylinder jacket which axially overlaps the container cup B over more than half its height.
  • the outer casing of the container cup B and an inner wall of a lower edge region of the cylinder jacket 22a of the actuating handle 20a are provided with corresponding stop profiles 30, 31, which engage behind one another in a form-fitting manner in the axial direction.
  • stop profiles 30, 31 which engage behind one another in a form-fitting manner in the axial direction.
  • FIG. 2 and the illustration in FIG. 3 are slightly modified.
  • a receptacle for the use of a filter arrangement is provided in the receiving part 2a of the pumping device P, as can be seen from FIG.
  • the closure lid 28 therefore provides a tight closure of the container cup B
  • the container cup B can serve directly as a media storage for a corresponding liquid, since despite the dimensionally stable container cup B provided by the nozzle bore receptacle, optionally with additional use of a filter assembly, a sufficient pressure equalization during operation of the pumping device P is given.
  • the media storage S is designed as a film bag produced from a single-layer or multi-layer film, which is circumferentially tightly connected to the profile ring 27.
  • the film bag is welded to the profile ring 27, wherein the profiles of the profile ring 27 enlarge the surface for a tight welding of the film bag with the profile ring 27.
  • the foil bag serving as a media store S is therefore open only to the pump device P, whereby the same pumping and discharging function can be achieved as in the embodiment according to FIG. 1. With each discharge operation, the volume of the media store S decreases, as a result of which the foil bag contracts.
  • the flexible wall of the film bag thus enables the pressure and volume compensation within the media reservoir S at corresponding AustragsvorĂŞtn the pumping device P.
  • FIGS. 5 and 6 a metering device is shown, the pumping device with the pumping device of FIG. 1 matches. Functionally identical parts of the metering device are provided with the same reference numerals as in the embodiment of FIG. 1, but with the addition of the letter "b". For a more detailed explanation, reference is made to the description of FIG. In the following, only the differences shown in FIGS. 5 and 6 will be discussed in detail.
  • the essential difference is that, similar to the embodiment according to FIGS. 2 to 4, the receiving part 2b is designed separately from a closure lid 1b.
  • the closure lid 1b is designed as a crimp lid, which is placed on a corresponding container neck of a media storage.
  • the placement of the receiving part 2b together with the closure lid 1b designed as a crimp lid takes place with the interposition of an unspecified, circumferential elastic seal.
  • the actuating handle 20b has a cup-shaped protective extension 22b, which is pulled down over the closure lid 1b designed as a crimping lid, so that the protective extension 22b axially covers a crimping region of the closure lid 1b designed as a crimping lid.
  • a release of the closure lid 1b is avoided by a corresponding container neck of a media storage as soon as the actuating handle 20b is snapped onto the outer pump housing part 8b of the pumping device as shown and described in FIG.
  • the separately produced actuating handle is only mounted on the pump housing part 8b when the closure lid 1b is crimped onto a corresponding container neck of a media reservoir. Because with already aufgerasteter actuating handle 22b no crimping would be possible.

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  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Description

Die Erfindung betrifft eine Dosiervorrichtung mit einem Medienspeicher sowie mit einer Pumpvorrichtung zum Dosieren und Ausbringen eines in dem Medienspeicher bevorrateten Mediums, wobei der Pumpvorrichtung eine Pumpkammer, wenigstens ein Einlass- sowie wenigstens ein Auslassventil zugeordnet sind, wobei das Einlassventil als Schieberventil ausgebildet ist, das in seiner SchlieĂźstellung ĂĽber einen Dosierhub beweglich ist, der ein Dosiervolumen fĂĽr die Pumpkammer definiert, sowie eine Pumpvorrichtung fĂĽr eine derartige Dosiervorrichtung.The invention relates to a metering device with a media reservoir and with a pumping device for metering and dispensing a stored in the media storage medium, wherein the pumping device is associated with a pumping chamber, at least one inlet and at least one outlet valve, wherein the inlet valve is designed as a slide valve, the its closing position is movable via a metering, which defines a metering volume for the pumping chamber, and a pumping device for such a metering device.

Aus der US 4369900 ist eine derartige Dosiervorrichtung bekannt. Die bekannte Dosiervorrichtung weist eine Pumpvorrichtung mit einer Pumpkammer, einem Einlassventil und einem Auslassventil auf. Das Einlassventil ist als Schieberventil ausgebildet. Das Schieberventil ist in seiner SchlieĂźstellung ĂĽber einen Dosierhub beweglich, der ein Dosiervorlumen fĂĽr die Pumpkammer definiert.From US 4369900 such a metering device is known. The known metering device has a pump device with a pumping chamber, an inlet valve and an outlet valve. The inlet valve is designed as a slide valve. The slide valve is movable in its closed position via a Dosierhub which defines a Dosiervorlumen for the pumping chamber.

Aus der US 5351863 ist eine weitere Dosiervorrichtung bekannt, die mit einer als Schubkolbenpumpe ausgebildeten Pumpvorrichtung versehen ist. Die Pumpvorrichtung weist ein klappenartiges Auslassventil auf.From US 5351863 a further metering device is known, which is provided with a pump device designed as a thrust piston pump. The pumping device has a flap-like outlet valve.

Die US 4371097 offenbart eine Dosiervorrichtung mit einer Pumpvorrichtung, der ein kugelförmiges Einlassventil zugeordnet ist.US 4371097 discloses a metering device with a pumping device associated with a spherical inlet valve.

Aus der DE 33 15 334 A1 ist eine mit einer Pumpvorrichtung versehene Dosiervorrichtung bekannt, die mit einem Medienspeicher zum Bevorraten von insbesondere flüssigen, brei- oder cremeartigen Medien versehen ist. Neben einem Einlassventil ist der Pumpkammer ein Auslassventil sowie ein zusätzliches Auslassventil im Bereich einer Austrittsöffnung zugeordnet, wobei das zusätzliche Auslassventil über einen Stufenkolben durch einen innerhalb der Pumpvorrichtung aufgebauten Flüssigkeitsdruck geöffnet wird. Hierzu ist ein Ventilkörper vorgesehen, der durch eine Federsteganordnung in Schließrichtung beaufschlagt ist.From DE 33 15 334 A1 a metering device provided with a pump device is known, which is provided with a media reservoir for storing particular liquid, wide or creamy media. In addition to an inlet valve, the pumping chamber is associated with an outlet valve and an additional outlet valve in the region of an outlet opening, wherein the additional outlet valve is opened via a stepped piston by a fluid pressure built up within the pumping device. For this purpose, a valve body is provided, which is acted upon by a spring bar arrangement in the closing direction.

Aufgabe der Erfindung ist es, eine Dosiervorrichtung der eingangs genannten Art zu schaffen, die eine exakte Dosierung und Ausbringung eines Mediums ermöglicht.The object of the invention is to provide a metering device of the type mentioned, which allows an exact dosage and application of a medium.

Diese Aufgabe wird dadurch gelöst, dass der Dosierhub durch die Länge eines gehäuseseitigen, auf die Kontur des Schieberventils abgestimmten Dosierkanals definiert ist, der sowohl zur Pumpkammer hin als auch zu dem Medienspeicher hin durch jeweils eine Querschnittserweiterung begrenzt ist. Durch den vorgegebenen Dosierhub des Schieberventils ist eine äußerst exakte Dosierung ermöglicht. Je nach Länge des Dosierhubes sind unterschiedliche Dosiervolumen erzielbar. Vorzugsweise ist der Dosierkanal an einem lösbar positionierten Bauteil ausgebildet. Dadurch kann je nach benötigtem Dosiervolumen ein geeignetes Bauteil mit unterschiedlich langem Dosierkanal eingesetzt werden. Die Länge des Dosierkanals definiert den Dosierhub und damit auch das Dosiervolumen der Dosiervorrichtung. Durch einfachen Austausch des Bauteiles ist die Dosiervorrichtung somit für unterschiedliche Einsatzzwecke geeignet. Sobald das Schieberventil die jeweilige Querschnittserweiterung erreicht hat, öffnet es. Dadurch ist das Schieberventil in beiden Hubrichtungen in eine Öffnungsstellung überführbar.This object is achieved in that the Dosierhub is defined by the length of a housing-side, matched to the contour of the slide valve Dosierkanals, which is limited both to the pumping chamber and to the media storage out by a respective cross-sectional widening. Due to the given metering stroke of the slide valve, a very exact dosage is possible. Depending on the length of Dosierhubes different dosing volumes can be achieved. Preferably, the metering channel is formed on a releasably positioned component. As a result, depending on the required dosing volume, a suitable component with a dosing channel of different lengths can be used. The length the metering channel defines the metering stroke and thus also the metering volume of the metering device. By simply replacing the component, the metering device is thus suitable for different purposes. As soon as the slide valve has reached the respective cross-sectional widening, it opens. As a result, the slide valve can be transferred in both stroke directions into an open position.

In weiterer Ausgestaltung der Erfindung weist die Pumpkammer wenigstens einen gehäuseseitigen Aufnahmeraum auf, dem wenigstens ein mit dem Schieberventil gemeinsam beweglicher Verdrängerkörper zugeordnet ist, dessen Form derart auf den Querschnitt des Aufnahmeraumes abgestimmt ist, dass der Verdrängerkörper bei einem Eintauchen in den Aufnahmeraum diesen nahezu vollständig ausfüllt. Dadurch ist es möglich, das Totraumvolumen der Pumpkammer der Dosiervorrichtung äußerst gering zu halten, wodurch eine weiter verbesserte Dosiergenauigkeit erzielbar ist.In a further embodiment of the invention, the pumping chamber has at least one housing-side receiving space, which is associated with at least one displacer together with the sliding valve whose shape is matched to the cross-section of the receiving space, that the displacer fills it almost completely when immersed in the receiving space , This makes it possible to keep the dead space volume of the pumping chamber of the metering device extremely low, whereby a further improved metering accuracy can be achieved.

In weiterer Ausgestaltung der Erfindung ist eine als Rückhubantrieb dienende Pumpfederanordnung außerhalb der Strömungswege des auszubringenden Mediums, insbesondere außerhalb der Pumpkammer, angeordnet. Die Pumpfederanordnung kann somit durch Inhaltsstoffe des jeweils auszubringenden Mediums nicht angegriffen werden. Durch die außerhalb der Strömungswege des Mediums positionierte Pumpfederanordnung wird auch eine Verunreinigung des Mediums durch die Pumpfederanordnung, insbesondere durch deren Korrosion, vermieden.In a further embodiment of the invention, a pump spring arrangement serving as a return stroke drive is arranged outside the flow paths of the medium to be delivered, in particular outside the pumping chamber. The pumping spring arrangement can thus not be attacked by ingredients of the medium to be dispensed. The pump spring arrangement positioned outside the flow paths of the medium also prevents contamination of the medium by the pump spring arrangement, in particular by its corrosion.

In weiterer Ausgestaltung der Erfindung ist eine einem Ventilkörper des Auslassventils zugeordnete Rückhubfederanordnung von dem Strömungsweg des auszubringenden Mediums getrennt positioniert. Insbesondere ist die Rückhubfederanordnung in einem mediumdichten, von der Pumpkammer separierten Raum untergebracht. Hierdurch kann die Rückhubfederanordnung von Inhaltsstoffen des Mediums nicht angegriffen werden.In a further refinement of the invention, a return stroke spring arrangement assigned to a valve body of the outlet valve is positioned separately from the flow path of the medium to be delivered. In particular, the Rückhubfederanordnung is housed in a medium-tight, separated from the pumping chamber space. This allows the Rückhubfederanordnung of ingredients of the medium are not attacked.

Für die Pumpvorrichtung werden verbesserte Einsatzmöglichkeiten dadurch geschaffen, dass die Pumpvorrichtung als getrennt von der Dosiervorrichtung hergestellte und lösbar mit der Dosiervorrichtung verbindbare Baueinheit gestaltet ist. Dadurch ist es möglich, die Pumpvorrichtung einheitlich auszuführen und in unterschiedlichen Dosiervorrichtungen einzusetzen.For the pumping device improved applications are created by the fact that the pumping device is designed as a separate from the metering device and releasably connectable to the metering unit. This makes it possible to carry out the pumping device uniformly and to use in different metering devices.

Weitere Vorteile und Merkmale der Erfindung ergeben sich aus den AnsprĂĽchen. Nachfolgend sind bevorzugte AusfĂĽhrungsbeispiele der Erfindung beschrieben und anhand der Zeichnungen dargestellt.

Fig. 1
zeigt in einem Längsschnitt eine Ausführungsform einer Dosiervorrichtung mit einer Pumpvorrichtung und einer Druckausgleichsvorrichtung,
Fig. 2
eine weitere Ausführungsform einer Dosiervorrichtung mit einem wandungsflexiblen Medienspeicher und einer Pumpvorrichtung ähnlich Fig. 1,
Fig. 3
die Dosiervorrichtung nach Fig. 2 in längsgeschnittener Darstellung,
Fig. 4
in vergrößerter, als Halbschnitt gezeigter Darstellung eine als Deckel dienende Aufnahmeeinheit der Dosiervorrichtung nach Fig. 3,
Fig. 5
in einem Längsschnitt eine Dosiervorrichtung ähnlich Fig. 1 und
Fig. 6
die Dosiervorrichtung nach Fig. 5 mit entfernter Betätigungshandhabe.
Further advantages and features of the invention will become apparent from the claims. Hereinafter, preferred embodiments of the invention are described and illustrated with reference to the drawings.
Fig. 1
shows a longitudinal section of an embodiment of a metering device with a pumping device and a pressure compensation device,
Fig. 2
FIG. 1 shows a further embodiment of a metering device with a wall-flexible media reservoir and a pump device similar to FIG. 1, FIG.
Fig. 3
the metering device according to FIG. 2 in longitudinal section,
Fig. 4
in enlarged, shown as a half-section representation serving as a lid receiving unit of the metering device of FIG. 3,
Fig. 5
in a longitudinal section a metering device similar to FIG. 1 and
Fig. 6
the metering device according to Fig. 5 with remote actuating handle.

Eine Dosiervorrichtung nach Fig. 1 weist einen Verschlussdeckel 1 auf, der auf einen Medienspeicher, vorzugsweise in Form eines flaschen- oder dosenförmigen Behältnisses, aufrastbar ist. Hierzu ist der Verschlussdeckel 1 becherartig gestaltet und er weist an seinem Innenumfang eine nicht näher bezeichnete Ringschulter auf, die auf einen korrespondierenden Ringflansch in einem Halsbereich des Medienspeichers aufrastbar ist. In einem oberen Bereich des Verschlussdeckels 1 ist eine nicht bezeichnete, umlaufende elastische Dichtung vorgesehen, die beim Aufrasten des Verschlussdeckels 1 auf den Hals des Medienspeichers komprimiert wird und so einen dichten Verschluss des Medienspeichers gewährleistet. An den Verschlussdeckel 1 einstückig angeformt ist ein becherartiger Aufnahmeteil 2, der entgegengesetzt zu dem nicht dargestellten Medienspeicher koaxial zu einer Mittellängsachse des Verschlussdeckels 1 nach oben abragt. Der Aufnahmeteil 2 bildet einen äußeren, mantelförmigen Gehäuseteil für eine nachfolgend näher beschriebenen Pumpvorrichtung, die Teil der Dosiervorrichtung nach Fig. 1 ist. Ebenfalls einstückig von dem Verschlussdeckel 1 abragend, und zwar koaxial innerhalb des Aufnahmeteils 2 ist ein feststehender Pumpgehäuseteil 3 vorgesehen, der koaxial zur Mittellängsachse des Verschlussdeckels 1 mit einem Austragkanal 6 versehen ist, der sowohl nach unten zum Medienspeicher hin als auch nach oben in Richtung einer Dosieröffnung 18 hin offen ist. In einem unteren Abschnitt des Austragkanals 6 ist ein grundsätzlich bekannter, vorzugsweise flexibler Ansaugstutzen 7 eingesetzt. Ein oberer Abschnitt des Austragkanals 6 ist als Dosierstrecke 13 gestaltet, indem dieser obere Abschnitt ausgehend von einer stufenförmigen Verjüngung des Austragkanals 6 einen zylindrischen Dosierkanal mit gegenüber dem unteren Abschnitt des Austragkanals 6 verringerten Durchmesser darstellt. Die als Dosierkanal gestaltete Dosierstrecke 13 ist von einem inneren Zylindermantel 4 umgeben.A metering device according to FIG. 1 has a closure lid 1, which can be latched onto a media reservoir, preferably in the form of a bottle-shaped or can-shaped container. For this purpose, the closure lid 1 is cup-shaped and it has on its inner circumference an unspecified annular shoulder, which can be latched onto a corresponding annular flange in a neck region of the media storage. In an upper region of the closure lid 1, a non-designated, circumferential elastic seal is provided, which is compressed when snapping the closure lid 1 on the neck of the media storage, thus ensuring a tight closure of the media storage. Integrally formed on the closure lid 1 is a cup-like receiving part 2, which protrudes opposite to the non-illustrated media storage coaxially to a central longitudinal axis of the closure lid 1 upwards. The receiving part 2 forms an outer, shell-shaped housing part for a pump device described in more detail below, which is part of the metering device according to Fig. 1. Also projecting in one piece from the closure cover 1, namely coaxially within the receiving part 2, a fixed pump housing part 3 is provided, which is provided coaxially to the central longitudinal axis of the closure lid 1 with a discharge channel 6, both down to the media storage out as well as up in the direction of a Dosing 18 is open. In a lower portion of the discharge channel 6, a basically known, preferably flexible intake 7 is used. An upper section of the discharge channel 6 is designed as a metering section 13 in that this upper section, starting from a step-shaped narrowing of the discharge channel 6, constitutes a cylindrical metering channel with a reduced diameter relative to the lower section of the discharge channel 6. Designed as a metering dosing 13 is surrounded by an inner cylinder shell 4.

Radial in Abstand zu dem inneren Zylindermantel 4 bildet der innere Pumpgehäuseteil 3 einen äußeren Zylindermantel 5, der - wie auch der innere Zylindermantel 4 - einstückig an dem Verschlussdeckel 1 angeformt ist. Der äußere Zylindermantel 5 ist koaxial zu dem inneren Zylindermantel ausgerichtet. Zwischen dem inneren Zylindermantel 4 und dem äußeren Zylindermantel 5 verbleibt ein ringförmiger Verdrängerraum 14, auf den nachfolgend noch näher eingegangen wird und der zu einer Pumpkammer zählt.Radially in distance from the inner cylinder shell 4, the inner pump housing part 3 forms an outer cylinder shell 5, which - as well as the inner cylinder shell 4 - is integrally formed on the closure lid 1. The outer cylinder shell 5 is aligned coaxially with the inner cylinder shell. Between the inner cylinder shell 4 and the outer cylinder shell 5 remains an annular displacement chamber 14, which will be discussed in more detail below and which counts to a pumping chamber.

Relativ zu dem lagefest am Medienspeicher befestigbaren Aufnahmeteil 2 einschließlich des inneren Pumpgehäuseteils 3 ist eine Pumpeinheit hubbeweglich gelagert. Die hubbewegliche Pumpeinheit weist einen äußeren Pumpgehäuseteil 8 auf, der mit einer inneren Pumpkolbeneinheit 9 bis 11 fest verbunden ist. Die Pumpkolbeneinheit 9 bis 11 ist separat als einstückiges Bauteil hergestellt und im Inneren des äußeren Pumpgehäuseteiles 8 verrastet. Die Pumpkolbeneinheit weist einen Kolbenkörper 9 auf, der in einem oberen Bereich einen Zylinderraum für ein koaxial angeordnetes, hubbewegliches Auslassventil 16 bildet. Das Auslassventil 16 ist durch eine Druckfederanordnung, vorliegend in Form einer nicht näher bezeichneten Schraubendruckfeder, in Schließrichtung so druckbelastet, dass das kolbenförmige Auslassventil 16 die Auslassöffnung 18 verschließt. Die Druckfederanordnung ist im Inneren des kolbenförmigen Auslassventils 16 angeordnet und stützt sich an einem Boden des Zylinderraumes des Kolbenkörpers 9 ab. Der Zylinderraum des Kolbenkörpers 9 ist in seinem oberen Randbereich mit einer umlaufenden Dichtlippe versehen, die sich umlaufend dicht an den Außenmantel des kolbenförmigen Auslassventils 16 anschmiegt. Dadurch ist der Zylinderraum und damit auch der Aufnahmeraum für die Druckfederanordnung gegen das Eindringen eines Mediums, insbesondere einer Flüssigkeit, abgedichtet. Das Auslassventil 16 ist zusätzlich als Füllstück ausgebildet, indem es das Innere des äußeren Pumpgehäuseteiles 8 nahezu vollständig ausfüllt. Auch der Kolbenkörper 9 ist als Füllkörper gestaltet, indem er mit seiner Außenkontur weitgehend an die Innenkontur des äußeren Pumpgehäuseteiles 8 angepasst ist.Relative to the fixed position on the media storage mountable receiving part 2 including the inner pump housing part 3, a pump unit is mounted for lifting. The liftable pump unit has an outer pump housing part 8 which is fixedly connected to an inner pumping piston unit 9 to 11. The pumping piston unit 9 to 11 is manufactured separately as a one-piece component and locked in the interior of the outer pump housing part 8. The pumping piston unit has a piston body 9, which forms a cylinder space for a coaxially arranged, liftable outlet valve 16 in an upper area. The outlet valve 16 is so pressure-loaded in the closing direction by a compression spring arrangement, in the present case in the form of a helical compression spring, not described in more detail, that the piston-shaped outlet valve 16 closes the outlet opening 18. The compression spring arrangement is arranged in the interior of the piston-shaped outlet valve 16 and is supported on a bottom of the cylinder space of the piston body 9. The cylinder chamber of the piston body 9 is provided in its upper edge region with a circumferential sealing lip, which tightly fits snugly against the outer jacket of the piston-shaped outlet valve 16. As a result, the cylinder space and thus also the receiving space for the compression spring arrangement against the penetration of a medium, in particular a liquid, sealed. The outlet valve 16 is additionally formed as a filler by almost completely fills the interior of the outer pump housing part 8. Also, the piston body 9 is as a packing designed by being largely adapted with its outer contour to the inner contour of the outer pump housing part 8.

In dem Kolbenkörper 9 ist ein erster Abschnitt einer zur Pumpkammer gehörenden Auslasskammer 17 gebildet, die zu dem Verdrängerraum 14 und der Dosierstrecke 13 hin offen ist. Dieser erste Abschnitt ist in seinem oberen Bereich radial nach außen hin offen und geht in einen Ringkammerabschnitt der Auslasskammer 17 über, der zwischen dem Außenmantel des Kolbenkörpers 9, der Außenkontur des Auslassventils 16 und der Innenkontur des äußeren Pumpgehäuseteiles 8 gebildet ist. Durch die Rastverbindung des Kolbenkörpers 9 in einem ringförmigen Rastflanschbereich mit dem äußeren Pumpgehäuseteil 8 ist der Ringkammerabschnitt axial nach unten geschlossen. Zur Auslassöffnung 18 hin verschließt das Auslassventil 16 den Ringkammerabschnitt der Auslasskammer 17.In the piston body 9, a first portion of a pump chamber belonging to the outlet chamber 17 is formed, which is open to the displacement chamber 14 and the metering 13. This first section is open in its upper region radially outward and merges into an annular chamber section of the outlet chamber 17, which is formed between the outer shell of the piston body 9, the outer contour of the outlet valve 16 and the inner contour of the outer pump housing part 8. By the latching connection of the piston body 9 in an annular Rastflanschbereich with the outer pump housing part 8 of the annular chamber section is closed axially downwards. Toward the outlet opening 18, the outlet valve 16 closes off the annular chamber section of the outlet chamber 17.

In einem unteren Bereich bildet der Kolbenkörper 9 einen koaxial inneren Ventilkolben 10, der zusammen mit dem inneren Zylindermantel 4 im Bereich der Dosierstrecke 13 ein als Schieberventil gestaltetes Einlassventil für die Pumpvorrichtung bildet. Hierzu ist der Ventilkolben 10, der einstückig an dem Kolbenkörper 9 angeformt ist, in einem unteren Bereich mit einer ringförmigen Dosierlippe 12 versehen, die sich bei einem Eintauchen des Ventilkolbens 10 in die Dosierstrecke 13 dicht an eine Innenwandung des die Dosierstrecke 13 bildenden Dosierkanals anschmiegt. Der Durchmesser der Dosierlippe 12 ist größer als der Durchmesser des Ventilkolbens 10. Die Länge des Ventilkolbens 10 sowie der Hub des Kolbenkörpers 9 und damit der gesamten, hubbeweglichen Pumpeinheit sind so bemessen, dass die Dosierlippe 12 in einer oberen, in Fig. 1 dargestellten Öffnungsstellung im geringen Abstand oberhalb der Dosierstrecke 13 positioniert ist. In einer unteren, vollständig nach unten gedrückten Endposition der hubbeweglichen Pumpeinheit ist die Dosierlippe 12 in die stufenförmige Erweiterung des Austragkanals 6 hineingefahren, d.h. sie ist über die Dosierstrecke 13 hinaus nach unten bewegt worden. Da der Außendurchmesser der Dosierlippe 12 geringer ist als der Durchmesser des Austragkanals 6 in den stufenförmig erweiterten Bereich und darüber hinaus der Durchmesser des Ventilkolbens 10 geringer ist als der Innendurchmesser der Dosierstrecke 13, kann in dieser unteren Endposition der Pumpeinheit ein Mediumaustausch zwischen der Auslasskammer 17 und dem Medienspeicher - über den Ansaugstutzen 7 - erfolgen.In a lower region, the piston body 9 forms a coaxially inner valve piston 10 which, together with the inner cylinder jacket 4 in the region of the metering section 13, forms an inlet valve designed as a slide valve for the pumping device. For this purpose, the valve piston 10, which is integrally formed on the piston body 9, provided in a lower region with an annular metering lip 12, which conforms to a dipping of the valve piston 10 in the metering 13 tightly against an inner wall of the metering 13 forming metering channel. The diameter of the metering lip 12 is greater than the diameter of the valve piston 10. The length of the valve piston 10 and the stroke of the piston body 9 and thus the entire liftable pump unit are dimensioned so that the metering lip 12 in an upper, shown in FIG is positioned at a short distance above the metering 13. In a lower, fully downwardly pressed end position of the liftable pump unit, the metering lip 12 is in the stepped extension of the discharge channel 6, ie it has been moved beyond the metering 13 also down. Since the outer diameter of the metering lip 12 is smaller than the diameter of the discharge channel 6 in the step-shaped enlarged area and moreover, the diameter of the valve piston 10 is smaller than the inner diameter of the metering 13, in this lower end position of the pumping unit, a medium exchange between the outlet chamber 17 and the media storage - via the intake 7 - done.

Koaxial und in radialem Abstand ist der Ventilkolben 10 von einem glockenartigen Verdrängerkolben 11 umschlossen, der mittels eines unteren Dichtrandes umlaufend dicht an einer Innenwandung des ringförmigen Verdrängerraumes 14 anliegt. Der Querschnitt des glockenförmigen Verdrängerkolbens 11 ist an den Querschnitt des Verdrängerraumes 14 derart angepasst, dass in der nach unten bewegten Endposition des Kolbenkörpers nahezu kein Totraum im Verdrängerraum verbleibt, da der Verdrängerkolben 11 in dieser Position vollständig in den Verdrängerraum 14 eingetaucht ist. Auch der zwischen der Außenwandung des Ventilkolbens 10 und der Innenwandung des Verdrängerkolbens 11 verbleibende Ringraum ist in seinem Volumen auf das Körpervolumen des inneren Zylindermantels 4 abgestimmt, wodurch das verbleibende Totraumvolumen bei nach unten bewegter Pumpeinheit weiter reduziert ist. Das kolbenförmige Auslassventil 16 ist im Bereich seines Außenmantels mit mehreren Ringstufen versehen, die Druckangriffsflächen zum Öffnen des Auslassventils 16 bilden. Die Schutzkappe 19 weist eine sich konisch nach unten erweiternde Glockenform auf, die über einen oberen Formabschnitt des äußeren Pumpgehäuseteiles 8 gestülpt ist und auf einem Ringschulterabsatz des Pumpgehäuseteiles 8 axial zur Anlage kommt. Die Schutzkappe 19 wird manuell lösbar auf den Formabschnitt des Pumpgehäuseteiles 8 aufgerastet. Der Außendurchmesser der Schutzkappe 19 ist geringer als der maximale Außendurchmesser des Pumpgehäuseteils 8. Der obere Formabschnitt des Pumpgehäuseteils 8 ist als Nasenolive gestaltet, um eine Applikation eines in dem Medienspeicher enthaltenen Mediums in die Nase zu ermöglichen. Vorzugsweise ist in dem in dem Medienspeicher gelagerten Medium wenigstens ein pharmazeutischer Wirkstoff enthalten.Coaxially and at a radial distance, the valve piston 10 is surrounded by a bell-shaped displacement piston 11, which abuts circumferentially by means of a lower sealing edge against an inner wall of the annular displacement chamber 14. The cross-section of the bell-shaped displacer 11 is adapted to the cross section of the displacer 14 so that remains virtually no dead space in the displacer in the downwardly moved end position of the piston body, since the displacer 11 is completely immersed in this position in the displacement chamber 14. Also, the remaining between the outer wall of the valve piston 10 and the inner wall of the displacer 11 annular space is tuned in its volume to the body volume of the inner cylinder shell 4, whereby the remaining dead space volume is further reduced in downwardly moving pump unit. The piston-shaped outlet valve 16 is provided in the region of its outer jacket with a plurality of annular steps which form pressure engagement surfaces for opening the outlet valve 16. The cap 19 has a conically widening bell shape, which is slipped over an upper mold portion of the outer pump housing part 8 and comes to an annular shoulder shoulder of the pump housing part 8 axially to the plant. The protective cap 19 is manually releasably latched onto the mold section of the pump housing part 8. The outer diameter of the protective cap 19 is less than the maximum outer diameter of the pump housing part 8. The upper mold section of Pump housing part 8 is designed as a nose olive to allow application of a medium contained in the media storage in the nose. Preferably, at least one pharmaceutical active substance is contained in the medium stored in the medium reservoir.

Auf einen Außenmantelbereich des äußeren Pumpgehäuseteiles 8 ist eine Betätigungshandhabe 20 aufgerastet, die an ihrer Oberseite wenigstens auf zwei gegenüberliegenden Seiten mit jeweils einer Fingerauflage versehen ist. In der Darstellung gemäß Fig. 1 sind die Fingerauflagen mit Profilierungen versehen. Zur Axialsicherung der Betätigungshandhabe 20 ist am Außenumfang des Pumpgehäuseteiles 8 ein umlaufender Raststeg 21 vorgesehen, dem oberhalb wenigstens eine Rastnut zugeordnet ist, in die entsprechende Innenrandabschnitte der Betätigungshandhabe 20 axial einrasten. Vorzugsweise wird die Betätigungshandhabe 20 auf dem Pumpgehäuseteil 8 mittels einer unlösbaren Rastverbindung aufgerastet, d.h. nach dem axialen Aufrasten der Betätigungshandhabe 20 ist diese von dem Pumpgehäuseteil 8 nicht mehr entfernbar, ohne zerstört zu werden.An actuating handle 20, which is provided on its upper side at least on two opposite sides, each with a finger rest, is latched onto an outer jacket region of the outer pump housing part 8. In the illustration according to FIG. 1, the finger supports are provided with profilings. For axial securing of the actuating handle 20, a circumferential detent web 21 is provided on the outer circumference of the pump housing part 8, to which at least one detent groove is assigned, into which corresponding inner edge sections of the actuating handle 20 engage axially. Preferably, the actuating handle 20 is snapped onto the pump housing part 8 by means of a permanent latching connection, i. after the axial locking of the actuating handle 20, this is no longer removable from the pump housing part 8, without being destroyed.

Unterhalb des Raststeges 21 weist der Pumpgehäuseteil 8 einen zylindrischen Führungsmantel auf, der in seinem unteren Randbereich mit mehreren, über den Außenumfang des Führungsmantels auf gleicher Höhe verteilt angeordneten Anschlagnocken 23 versehen ist, die mit einem radial nach innen abragenden, umlaufenden Rastbund 24 des mantel- oder becherartigen Aufnahmeteiles 2 zusammenwirken. Die Rastnocken 23 und der Rastbund 24 bilden Rastprofilierungen, die eine Axialsicherung des hubbeweglichen Pumpgehäuseteils 8 an dem feststehenden Aufnahmeteil 2 gewährleisten. Die Rastprofilierungen 23, 24 bilden einen axialen Rückhalt des Pumpgehäuseteils 8 gegen die Druckkraft einer Pumpfederanordnung 15, die als Pumpantrieb für eine Rückstellung der hubbeweglichen Pumpeinheit in die in Fig. 1 dargestellte Ausgangslage dient. Ein manuelles Nachuntendrücken der Pumpeinheit erfolgt somit gegen die Druckkraft der Pumpfederanordnung 15. Wie anhand der Fig. 1 erkennbar ist, ist die Pumpfederanordnung 15 außerhalb des äußeren Zylindermantels 5 des inneren, feststehenden Pumpgehäuseteils 8 angeordnet, so dass die Pumpfederanordnung 15 außerhalb des von Medium durchströmten Pumpraumes positioniert ist. Die Pumpfederanordnung 15 kann somit mit dem Medium, beispielsweise einer wenigstens einen pharmazeutischen Wirkstoff enthaltenden Flüssigkeit, nicht in Verbindung geraten.Below the latching web 21, the pump housing part 8 has a cylindrical guide casing which is provided in its lower edge region with a plurality of stop cams 23 distributed over the outer circumference of the guide casing at the same height, which are provided with a circumferentially extending latching collar 24 projecting radially inwards. or cup-like receiving parts 2 cooperate. The locking cams 23 and the locking collar 24 form latching profiles, which ensure an axial securing of the liftable pump housing part 8 to the stationary receiving part 2. The latching profiles 23, 24 form an axial support of the pump housing part 8 against the pressure force of a pump spring arrangement 15, which serves as a pump drive for a provision of the liftable pump unit in the starting position shown in Fig. 1. A manual Nachuntendrücken the As can be seen with reference to FIG. 1, the pump spring arrangement 15 is arranged outside the outer cylinder jacket 5 of the inner stationary pump housing part 8, so that the pump spring arrangement 15 is positioned outside the pump space through which the medium flows. The pumping spring assembly 15 thus can not communicate with the medium, for example, a liquid containing at least one pharmaceutical agent.

Die Betätigungshandhabe 20 weist einen ringförmigen Sicherungsfortsatz 22 auf, der als Zylindermantel nach unten abragt und in der in Fig. 1 dargestellten, oberen Endposition der Pumpeinheit den Aufnahmeteil 2 so weit axial überragt, dass er den Bereich der Rastprofilierungen 23, 24 überlappt. Der Abstand der Außenseite des Aufnahmeteils zur Innenwandung des Schutzfortsatzes 22 ist vorzugsweise geringer als die radiale Erstreckung der Rastprofilierungen 23, 24, so dass der starre, ringförmige Schutzfortsatz 22 einen Schutz gegen ein Lösen der Rastprofilierungen 23, 24 und damit eine Abzugsicherung für den Pumpgehäuseteil 8 bildet.The actuating handle 20 has an annular securing extension 22, which protrudes downwards as a cylinder jacket and axially projects beyond the receiving part 2 in the upper end position of the pump unit shown in FIG. 1 so that it overlaps the region of the locking profilings 23, 24. The distance between the outer side of the receiving part to the inner wall of the protective extension 22 is preferably less than the radial extent of the locking profiles 23, 24, so that the rigid, annular protective extension 22 provides protection against release of the locking profiles 23, 24 and thus a trigger protection for the pump housing part. 8 forms.

Da der Verschlussdeckel 1 in Verbindung mit der zuvor beschriebenen Pumpvorrichtung ein als Medienspeicher dienendes Behältnis dicht abschließt, muss bei entsprechenden Pumpvorgängen ein Druckausgleich erfolgen, um die Funktion der Pumpvorrichtung nicht zu beeinträchtigen. Beim dargestellten Ausführungsbeispiel ist hierzu eine Druckausgleichsvorrichtung 25, 26, D vorgesehen, die in dem Verschlussdeckel 1 integriert ist. Die Druckausgleichsvorrichtung weist zum einen eine sich zur Außenseite hin stark verjüngende, als Druckausgleichsöffnung dienende Düsenbohrung D auf, deren engster Durchmesser vorzugsweise 0,2mm bis 0,3mm nicht übersteigt. Hierdurch wird ein Gasaustausch gewährleistet, ein Flüssigkeitsverlust hingegen ist aufgrund der äußerst kleinen Düsenbohrung D minimiert. Damit ergibt sich eine reduzierte Verdunstung. Die reduzierte Verdunstung ist insbesondere vorteilhaft für die in Fig. 1 zusätzlich vorgesehene Filteranordnung 25. Die Filteranordnung 25 weist ein nicht näher bezeichnetes Aufnahmegehäuse für einen membranförmigen Filter 26 auf. Das Aufnahmegehäuse ist in eine korrespondierende Aufnahme des Verschlussdeckels 1 eingesetzt und vorzugsweise in diese eingeklebt oder in anderer Art und Weise fest mit dieser verbunden. Der membranförmige Filter 26 ist bei der dargestellten Ausführungsform von dem Aufnahmegehäuse umspritzt und somit in diesem integriert. Alternativ ist es auch möglich, den membranförmigen Filter 26 auf einen oberen Stirnrand des Aufnahmegehäuses aufzulaminieren. Der membranförmige Filter stellt vorzugsweise eine PP/PTFE-Membran oder eine TPE/PES-Membran dar. Der Filter 26 dient dazu, eine Kontaminierung des in dem Medienspeicher befindlichen Mediums zu vermeiden, indem die durch die Düsenbohrung D bei einem entsprechenden Pumpvorgang als Druckausgleich angesaugte Atmosphärenluft durch die entsprechende Membran gereinigt wird. Ein Wasser- oder Feuchtigkeitseintritt wird durch die Filteranordnung 25 vermieden.Since the closure lid 1 in conjunction with the pumping device described above closes off tightly a container serving as a media reservoir, a pressure equalization must take place in the case of corresponding pumping operations so as not to impair the function of the pumping device. In the illustrated embodiment, a pressure compensation device 25, 26, D is provided for this purpose, which is integrated in the closure lid 1. On the one hand, the pressure compensation device has a nozzle bore D, which tapers strongly towards the outside and serves as a pressure compensation opening, the narrowest diameter of which preferably does not exceed 0.2 mm to 0.3 mm. This ensures a gas exchange, a liquid loss, however, is minimized due to the extremely small nozzle bore D. This results in a reduced Evaporation. The reduced evaporation is particularly advantageous for the additionally provided in Fig. 1 filter assembly 25. The filter assembly 25 has a unspecified recording housing for a membrane-shaped filter 26. The receiving housing is inserted into a corresponding receptacle of the closure lid 1 and preferably glued into it or connected in another way firmly with this. The membrane-shaped filter 26 is encapsulated in the illustrated embodiment of the receiving housing and thus integrated in this. Alternatively, it is also possible to laminate the membrane-shaped filter 26 to an upper end edge of the receiving housing. The membrane-shaped filter preferably represents a PP / PTFE membrane or a TPE / PES membrane. The filter 26 serves to prevent contamination of the medium in the media reservoir by sucking through the nozzle bore D in a corresponding pumping operation as a pressure equalization Atmosphere air is purified through the corresponding membrane. Water or moisture ingress is avoided by the filter assembly 25.

Nachfolgend wird die Funktion der in Fig. 1 dargestellten Dosiervorrichtung beschrieben. Das durch den Ventilkolben 10 in Verbindung mit der Dosierlippe 12 und der Dosierstrecke 13 gebildete Einlassventil arbeitet bei einem manuellen Betätigen der Betätigungshandhabe 20 als Schieber, indem der äußere Pumpgehäuseteil 8 zusammen mit der Pumpeinheit 9 bis 11 nach unten bewegt wird. Durch die Tatsache, dass die Dosierlippe 12 bei einem kompletten Hub der Pumpeinheit nach unten unterhalb der Dosierstrecke 13 und damit unterhalb des stufenförmigen Absatzes im Austragkanal 6 ins Freie läuft, wird ein sogenanntes Priming ermöglicht. Das bedeutet, dass in dem durch die Auslasskammer 17, dem Verdrängerraum 14 und dem Ringraum zwischen dem inneren Ventilkolben 10 und dem äußeren Verdrängerkolben 11 definierten Pumpraum der Pumpvorrichtung befindliche Luft bei einer Hubbewegung der Pumpeinheit nach unten in den Austragkanal 6 und damit in den Ansaugstutzen 7 und in den Medienspeicher entweichen kann. Beim anschließenden Rückhub erfolgt die entsprechende Ansaugung des flüssigen Mediums. Aufgrund des äußerst geringen Totraumvolumens innerhalb des als Pumpkammer dienenden Pumpraumes der Pumpvorrichtung genügt vorzugsweise bereits ein einziger Hub als Priming, um eine ausreichende Ansaugung des auszubringenden Mediums in der Pumpkammer zu erzielen. Die Länge des Hubs der Dosierlippe 12 entlang der Dosierstrecke 13 definiert das Dosiervolumen. Die definierte, und vom übrigen Austragkanal 6 verjüngt abgestufte Dosierstrecke 13 in Verbindung mit dem als Schieber nach unten ins Freie laufenden Ventilkolben 10 ermöglicht auch nach dem Abschluss des Primings, d.h. nach der vollständigen Befüllung des gesamten Mediumweges im Austragkanal 6 sowie in der Pump- oder Dosierkammer der Pumpvorrichtung eine besonders exakte und zuverlässige Dosierung.The function of the dosing device shown in Fig. 1 will be described below. The inlet valve formed by the valve piston 10 in conjunction with the metering lip 12 and the metering 13 works at a manual actuation of the actuating handle 20 as a slide by the outer pump housing part 8 is moved together with the pumping unit 9 to 11 down. Due to the fact that the metering lip 12 runs at a complete stroke of the pumping unit down below the metering 13 and thus below the stepped heel in the discharge channel 6 into the open, a so-called priming is possible. This means that in the pump chamber defined by the outlet chamber 17, the displacement chamber 14 and the annular space between the inner valve piston 10 and the outer displacer 11 of the pumping air at a stroke of the pump unit down into the discharge channel 6 and thus in the intake manifold 7 and can escape into the media storage. During the subsequent return stroke, the corresponding intake of the liquid medium takes place. Due to the extremely low dead space volume within the pumping chamber serving as the pumping chamber of the pumping device, preferably only one single stroke suffices as priming in order to achieve sufficient suction of the medium to be delivered in the pumping chamber. The length of the stroke of the metering lip 12 along the metering 13 defines the metering volume. The defined, and tapered from the remaining discharge channel 6 graduated Dosierstrecke 13 in conjunction with the slide down into the open to the outside valve piston 10 allows even after the completion of priming, ie after complete filling of the entire medium path in the discharge channel 6 and in the pump or Metering chamber of the pumping device a particularly accurate and reliable dosage.

Ein Austragvorgang erfolgt, sobald der Flüssigkeitsdruck in der Pumpkammer, d.h. insbesondere im oberen Bereich der Auslasskammer 17, der auf das kolbenförmige Auslassventil 16 wirkt, den durch die Druckfederanordnung aufgebrachten Gegendruck übersteigt. Der Flüssigkeitsdruck drückt dann das Auslassventil 16 gegen die Druckkraft der Druckfederanordnung nach unten, wodurch über die Auslassöffnung 18 der entsprechende Austragvorgang des Mediums erfolgt. Die Auslassöffnung 18 ist vorzugsweise düsenförmig gestaltet, um eine Zerstäubung des ausgebrachten Mediums zu bewirken. Selbstverständlich wird vor einem entsprechenden Austragvorgang die Schutzkappe 19 entfernt.A discharge operation occurs as soon as the fluid pressure in the pumping chamber, i. in particular in the upper region of the outlet chamber 17, which acts on the piston-shaped outlet valve 16, exceeds the counter-pressure applied by the compression spring arrangement. The fluid pressure then presses the outlet valve 16 against the pressure force of the compression spring arrangement down, whereby via the outlet opening 18 of the corresponding discharge of the medium takes place. The outlet port 18 is preferably nozzle-shaped to cause atomization of the discharged medium. Of course, the cap 19 is removed before a corresponding discharge.

Die in Fig. 1 dargestellte Dosiervorrichtung besteht aus wenigen Kunststoffbauteilen, vorliegend aus insgesamt lediglich sechs Kunststoffbauteilen. Ein erstes Kunststoffbauteil stellt der Verschlussdeckel 1 in Verbindung mit dem Aufnahmeteil 2 und dem inneren Pumpgehäuseteil 3 dar. Das zweite Kunststoffbauteil wird durch den äußeren Pumpgehäuseteil 8 gebildet. Das dritte Kunststoffbauteil ist die Pumpkolbeneinheit 9 bis 11. Das vierte Kunststoffbauteil ist das kolbenförmige Auslassventil 16. Das fünfte Kunststoffbauteil ist die mit den Fingerauflagen versehene Betätigungshandhabe 20 und das letzte Kunststoffbauteil ist die Schutzkappe 19. Zur Montage der Dosiervorrichtung wird zunächst das kolbenförmige Auslassventil 16 gemeinsam mit der dieses beaufschlagenden Druckfederanordnung in die Pumpkolbeneinheit 9 eingesetzt und anschließend die Pumpkolbeneinheit 9 gemeinsam mit dem Auslassventil 16 ins Innere des äußeren Pumpgehäuseteiles 8 eingerastet, wodurch eine obere Stirnfläche des Auslassventils 16 gegen den korrespondierenden Ventilsitz im Bereich der Auslassöffnung 18 gepresst wird. Anschließend wird der äußere Pumpgehäuseteil 8 zusammen mit der Pumpkolbeneinheit 9 bis 11 in das feststehende Kunststoffbauteil axial eingeschoben, wodurch die Verrastung und axiale Sicherung im Bereich der Rastprofilierungen 23, 24 erfolgt. Nun wird die Betätigungshandhabe 20 axial von oben her auf den äußeren Pumpgehäuseteil 8 aufgerastet, wodurch die Rastverbindung und Axialsicherung zwischen Pumpgehäuseteil 8 und Aufnahmeteil 2 des Verschlussdeckels 1 überdeckt und gesichert ist. In den Verschlussdeckel 1 wird die Filteranordnung 25 wie auch die umlaufende Dichtung eingesetzt. Anschließend kann der Verschlussdeckel 1 auf einen entsprechenden Medienspeicher dicht aufgesetzt werden. Vor dem axialen Aufsetzen des äußeren Pumpgehäuseteils 8 auf den Verschlussdeckel 1 wurde die Pumpfederanordnung 15 eingefügt.The metering device shown in Fig. 1 consists of a few plastic components, in this case from a total of only six plastic components. A first plastic component is the closure lid 1 in conjunction with the receiving part 2 and the inner pump housing part 3. The second plastic component is formed by the outer pump housing part 8. The third plastic component is the pumping piston unit 9 to 11. The fourth plastic component is the piston-shaped outlet valve 16. The fifth plastic component is provided with the finger pads actuating handle 20 and the last plastic component is the protective cap 19. To mount the metering device, first the piston-shaped outlet valve 16 together with this acting spring arrangement in the Pump piston unit 9 is inserted and then the pumping piston unit 9 is locked together with the outlet valve 16 into the interior of the outer pump housing part 8, whereby an upper end face of the outlet valve 16 is pressed against the corresponding valve seat in the region of the outlet opening 18. Subsequently, the outer pump housing part 8 is inserted axially together with the pumping piston unit 9 to 11 in the fixed plastic component, whereby the latching and axial securing in the region of the locking profiles 23, 24 takes place. Now the actuating handle 20 is snapped axially from above onto the outer pump housing part 8, whereby the latching connection and axial securing between pump housing part 8 and receiving part 2 of the closure lid 1 is covered and secured. In the cap 1, the filter assembly 25 as well as the circumferential seal is used. Subsequently, the closure lid 1 can be placed tightly on a corresponding media storage. Before the axial placement of the outer pump housing part 8 on the cap 1, the pump spring assembly 15 has been inserted.

Bei der Ausführungsform nach den Fig. 2 bis 4 entspricht eine Pumpvorrichtung P der zuvor anhand der Fig. 1 beschriebenen Pumpvorrichtung, so dass für eine nähere Erläuterung der Pumpvorrichtung P auf die ausführliche Beschreibung zur Fig. 1 verwiesen wird. Funktionsgleiche Teile sind mit gleichem Bezugszeichen gegenüber der Ausführungsform nach Fig. 1, jedoch unter Hinzufügung des Buchstabens "a", versehen. Nachfolgend wird lediglich auf die Unterschiede der Pumpvorrichtung P zu der Pumpvorrichtung in Fig. 1 eingegangen. Zudem wird die übrige Dosiervorrichtung, in der die Pumpvorrichtung P integriert ist, beschrieben. Wesentlicher Unterschied zu der Ausführungsform nach Fig. 1 ist es, dass die Pumpvorrichtung P als separate Baueinheit getrennt von der Dosiervorrichtung herstellbar und lösbar mit dieser verbunden ist. Bei der Ausführungsform nach den Fig. 2 bis 4 ist der Aufnahmeteil 2a zwar ebenfalls einstückig mit dem inneren Pumpgehäuseteil gestaltet. Der innere Pumpgehäuseteil, der von der Pumpfederanordnung 15a umgeben ist, stellt jedoch gemeinsam mit dem Aufnahmeteil 2a eine von einem Verschlussdeckel 28 für einen Behälterbecher B getrennte Einheit dar. Der Verschlussdeckel 28 ist hülsen- oder ringartig gestaltet und weist eine Aufnahmevertiefung auf, in die der Aufnahmeteil 2a der Pumpvorrichtung P mittels eines umlaufenden Ringflansches einrastbar ist. Hierzu ist ein Rand der Aufnahmevertiefung mit einer ringförmigen Raststelle versehen, die in den Fig. 2 und 3 erkennbar, jedoch nicht näher bezeichnet ist. Ein dichter und spielfreier Sitz des Ringflansches und damit des Aufnahmeteils 2a in der Aufnahmevertiefung des Verschlussdeckels 28 wird durch eine Ringdichtung 29 gewährleistet, die unterhalb des Ringflansches positioniert ist und auf einem Tellerrand der ringförmigen Aufnahmevertiefung des Verschlussdeckels 28 aufliegt. Der Verschlussdeckel 28 ist als Kunststoffteil gestaltet und mit einem oberen Randbereich des Behälterbechers B° verrastet oder durch Krimpen fest mit diesem verbunden.In the embodiment according to FIGS. 2 to 4, a pumping device P corresponds to the pumping device described above with reference to FIG. 1, so that reference is made to the detailed description of FIG. 1 for a more detailed explanation of the pumping device P. Functionally identical parts are provided with the same reference number with respect to the embodiment of FIG. 1, but with the addition of the letter "a". Below, only the differences of the pumping device P to the pumping device in Fig. 1 will be discussed. In addition, will the rest of the dosing device, in which the pumping device P is integrated described. The essential difference from the embodiment according to FIG. 1 is that the pumping device P can be produced and detachably connected to it as a separate structural unit, separate from the metering device. In the embodiment according to FIGS. 2 to 4, the receiving part 2a is indeed also designed in one piece with the inner pump housing part. However, the inner pump housing part, which is surrounded by the pumping spring assembly 15a, together with the receiving part 2a is a separate unit from a closure lid 28 for a container cup B. The closure lid 28 is sleeve-like or ring-shaped and has a receiving recess into which the Receiving part 2a of the pumping device P can be latched by means of a circumferential annular flange. For this purpose, an edge of the receiving recess is provided with an annular detent, which is shown in FIGS. 2 and 3 recognizable, but not specified. A tight and play-free seat of the annular flange and thus of the receiving part 2a in the receiving recess of the closure cover 28 is ensured by a ring seal 29 which is positioned below the annular flange and rests on one edge of the annular receiving recess of the closure lid 28. The closure lid 28 is designed as a plastic part and locked with an upper edge region of the container cup B ° or fixed by crimping with this.

Der Verschlussdeckel 28 ist unterhalb des Tellerrandes der Aufnahmevertiefung mit einem einstückig angeformten Profilring 27 versehen, der als Fortsatz zu dem Verschlussdeckel 28 in das Innere des Behälterbechers B hineinragt. Wie anhand der Fig. 4 erkennbar ist, ist der Profilring mit mehreren parallel und in Abstand zueinander angeordneten Ringrippen 32 versehen, die radial zu einer Mittellängsachse des Verschlussdeckels 28 nach außen abragen. Zudem sind mehrere, über die Höhe des Profilringes 27 erstreckte, vertikal ausgerichtete Rippenstege vorgesehen, die in den Fig. 2 bis 4 nicht näher bezeichnet sind. Diese Rippenstege sind über den Umfang des Profilringes 27 verteilt angeordnet. Die Schnittdarstellung in den Fig. 2 und 3 ist jeweils durch zwei solche Rippenstege hindurchgezogen.The closure lid 28 is provided below the plate edge of the receiving recess with an integrally molded profile ring 27 which protrudes as an extension to the closure lid 28 in the interior of the container cup B. As can be seen with reference to FIG. 4, the profile ring is provided with a plurality of parallel and spaced-apart annular ribs 32, which protrude radially to a central longitudinal axis of the closure lid 28 to the outside. In addition, several, over the height of the profile ring 27 extending vertically oriented rib webs are provided, which are not designated in more detail in Figs. These Rib webs are arranged distributed over the circumference of the profile ring 27. The sectional view in FIGS. 2 and 3 is pulled through two such rib webs.

Eine Betätigungshandhabe 20a für die Pumpvorrichtung P entspricht bezüglich ihrer Pumpbetätigungsfunktion der Betätigungshandhabe 20 nach Fig. 1. Die Betätigungshandhabe 20a ist zusätzlich als becherförmiger Zylindermantel gestaltet, der den Behälterbecher B über mehr als die Hälfte seiner Höhe axial übergreift. Der Außenmantel des Behälterbechers B und eine Innenwandung eines unteren Randbereiches des Zylindermantels 22a der Betätigungshandhabe 20a sind mit korrespondierenden Anschlagprofilierungen 30, 31 versehen, die einander in axialer Richtung formschlüssig hintergreifen. Hierdurch wird für die Betätigungshandhabe 20a eine Axialsicherung gewährleistet. Da die Betätigungshandhabe 20a - wie die Betätigungshandhabe 20 nach Fig. 1 - auf den äußeren Pumpgehäuseteil der Pumpvorrichtung P aufgerastet ist, wird durch die Anschlagprofilierungen 30 und 31 gleichzeitig die Hubbegrenzung der Pumpvorrichtung P geschaffen, die die notwendige Rückhaltekraft gegen die Druckkraft der Pumpfederanordnung 15 bietet.An actuating handle 20a for the pumping device P corresponds with respect to its pumping operation function of the actuating handle 20 of FIG. 1. The actuating handle 20a is additionally designed as a cup-shaped cylinder jacket which axially overlaps the container cup B over more than half its height. The outer casing of the container cup B and an inner wall of a lower edge region of the cylinder jacket 22a of the actuating handle 20a are provided with corresponding stop profiles 30, 31, which engage behind one another in a form-fitting manner in the axial direction. As a result, an axial securing is ensured for the actuating handle 20a. Since the actuating handle 20a - like the actuating handle 20 of FIG. 1 - is latched onto the outer pump housing part of the pump device P, the stroke limit of the pump device P is created by the stop profiles 30 and 31 at the same time providing the necessary restraining force against the pressure force of the pump spring arrangement 15 ,

Die Ausführungsform der Fig. 2 und die Darstellung in Fig. 3 sind geringfügig modifiziert. So ist bei der Ausführungsform nach Fig. 3 in dem Aufnahmeteil 2a der Pumpvorrichtung P eine Aufnahme für den Einsatz einer Filteranordnung vorgesehen, wie sie aus Fig. 1 ersichtlich ist. Falls der Verschlussdeckel 28 daher einen dichten Abschluss des Behälterbechers B bietet, kann der Behälterbecher B direkt als Medienspeicher für eine entsprechende Flüssigkeit dienen, da trotz des formstabilen Behälterbechers B durch die mit der Düsenbohrung versehene Aufnahme, gegebenenfalls mit zusätzlichem Einsatz einer Filteranordnung, ein ausreichender Druckausgleich während des Betriebs der Pumpvorrichtung P gegeben ist.The embodiment of FIG. 2 and the illustration in FIG. 3 are slightly modified. Thus, in the embodiment according to FIG. 3, a receptacle for the use of a filter arrangement is provided in the receiving part 2a of the pumping device P, as can be seen from FIG. If the closure lid 28 therefore provides a tight closure of the container cup B, the container cup B can serve directly as a media storage for a corresponding liquid, since despite the dimensionally stable container cup B provided by the nozzle bore receptacle, optionally with additional use of a filter assembly, a sufficient pressure equalization during operation of the pumping device P is given.

Bei der Darstellung nach Fig. 2 hingegen ist eine derartige Druckausgleichsvorrichtung für den Behälterbecher B nicht gegeben. Stattdessen ist in dem Behälterbecher B ein Medienspeicher S mit flexibler Wandung vorgesehen. Vorliegend ist der Medienspeicher S als aus einer ein- oder mehrlagigen Folie hergestellter Folienbeutel gestaltet, der umlaufend dicht mit dem Profilring 27 verbunden ist. Vorzugsweise ist der Folienbeutel mit dem Profilring 27 verschweißt, wobei die Profilierungen des Profilringes 27 die Oberfläche für eine dichte Verschweißung des Folienbeutels mit dem Profilring 27 vergrößern. Hierdurch ist eine große Sicherheit der Schweißverbindung wie auch des dichten Abschlusses des Folienbeutels mit dem Profilring 27 gewährleistet. Der als Medienspeicher S dienende Folienbeutel ist somit lediglich zur Pumpvorrichtung P hin offen, wodurch die gleiche Pump- und Austragfunktion erzielbar ist wie bei der Ausführungsform nach Fig. 1. Mit jedem Austragvorgang verringert sich das Volumen des Medienspeichers S, wodurch der Folienbeutel sich zusammenzieht. Die flexible Wandung des Folienbeutels ermöglicht somit den Druck- und Volumenausgleich innerhalb des Medienspeichers S bei entsprechenden Austragsvorgängen der Pumpvorrichtung P.In the illustration of FIG. 2, however, such a pressure compensation device for the container cup B is not given. Instead, in the container cup B a media storage S is provided with a flexible wall. In the present case, the media storage S is designed as a film bag produced from a single-layer or multi-layer film, which is circumferentially tightly connected to the profile ring 27. Preferably, the film bag is welded to the profile ring 27, wherein the profiles of the profile ring 27 enlarge the surface for a tight welding of the film bag with the profile ring 27. As a result, a great security of the welded joint as well as the tight completion of the foil bag with the profile ring 27 is ensured. The foil bag serving as a media store S is therefore open only to the pump device P, whereby the same pumping and discharging function can be achieved as in the embodiment according to FIG. 1. With each discharge operation, the volume of the media store S decreases, as a result of which the foil bag contracts. The flexible wall of the film bag thus enables the pressure and volume compensation within the media reservoir S at corresponding Austragsvorgängen the pumping device P.

Bei der Ausführungsform nach den Fig. 5 und 6 ist eine Dosiervorrichtung dargestellt, deren Pumpvorrichtung mit der Pumpvorrichtung nach Fig. 1 übereinstimmt. Funktionsgleiche Teile der Dosiervorrichtung sind mit den gleichen Bezugszeichen versehen wie bei der Ausführungsform nach Fig. 1, jedoch unter Hinzufügung des Buchstabens "b". Bezüglich einer näheren Erläuterung wird auf die Beschreibung zur Fig. 1 verwiesen. Nachfolgend wird lediglich auf die in den Fig. 5 und 6 dargestellten Unterschiede ausführlich eingegangen. Wesentlicher Unterschied ist es, dass der Aufnahmeteil 2b ähnlich wie bei der Ausführungsform nach Fig. 2 bis 4 separat zu einem Verschlussdeckel 1b gestaltet ist. Der Verschlussdeckel 1b ist als Krimpdeckel ausgeführt, der auf einen korrespondierenden Behälterhals eines Medienspeichers aufsetzbar ist. Das Aufsetzen des Aufnahmeteiles 2b gemeinsam mit dem als Krimpdeckel gestalteten Verschlussdeckel 1b erfolgt unter Zwischenfügung einer nicht näher bezeichneten, umlaufenden elastischen Dichtung. Die Betätigungshandhabe 20b weist einen becherförmigen Schutzfortsatz 22b auf, der bis über den als Krimpdeckel ausgeführten Verschlussdeckel 1b nach unten gezogen ist, so dass der Schutzfortsatz 22b einem Krimpbereich des als Krimpdeckel gestalteten Verschlussdeckels 1b axial überdeckt. Dadurch wird ein Lösen des Verschlussdeckels 1b von einem entsprechenden Behälterhals eines Medienspeichers vermieden, sobald die Betätigungshandhabe 20b auf den äußeren Pumpgehäuseteil 8b der Pumpvorrichtung gemäß der Darstellung und Beschreibung nach Fig. 1 aufgerastet ist. Da der Schutzfortsatz den Krimpbereich des Verschlussdeckels 1b überdeckt, wird die separat hergestellte Betätigungshandhabe erst dann auf dem Pumpgehäuseteil 8b montiert, wenn der Verschlussdeckel 1b auf einen entsprechenden Behälterhals eines Medienspeichers aufgekrimpt ist. Denn mit bereits aufgerasteter Betätigungshandhabe 22b wäre kein Krimpvorgang mehr möglich.In the embodiment of FIGS. 5 and 6, a metering device is shown, the pumping device with the pumping device of FIG. 1 matches. Functionally identical parts of the metering device are provided with the same reference numerals as in the embodiment of FIG. 1, but with the addition of the letter "b". For a more detailed explanation, reference is made to the description of FIG. In the following, only the differences shown in FIGS. 5 and 6 will be discussed in detail. The essential difference is that, similar to the embodiment according to FIGS. 2 to 4, the receiving part 2b is designed separately from a closure lid 1b. The closure lid 1b is designed as a crimp lid, which is placed on a corresponding container neck of a media storage. The placement of the receiving part 2b together with the closure lid 1b designed as a crimp lid takes place with the interposition of an unspecified, circumferential elastic seal. The actuating handle 20b has a cup-shaped protective extension 22b, which is pulled down over the closure lid 1b designed as a crimping lid, so that the protective extension 22b axially covers a crimping region of the closure lid 1b designed as a crimping lid. As a result, a release of the closure lid 1b is avoided by a corresponding container neck of a media storage as soon as the actuating handle 20b is snapped onto the outer pump housing part 8b of the pumping device as shown and described in FIG. Since the protective extension covers the crimping area of the closure lid 1b, the separately produced actuating handle is only mounted on the pump housing part 8b when the closure lid 1b is crimped onto a corresponding container neck of a media reservoir. Because with already aufgerasteter actuating handle 22b no crimping would be possible.

Claims (5)

  1. Dosing device having a medium reservoir (S) and having a pumping device for dosing and dispensing a medium stored in the medium reservoir, wherein a pump chamber, at least one inlet valve and at least one outlet valve are allocated to the pumping device, wherein the inlet valve is formed as a slide valve (10, 12) which is movable in its closed position over a dosing stroke which defines a dosing volume for the pump chamber (17), characterised in that the dosing stroke is defined by the length of a housing-side dosing channel (13) tailored to suit the contour of the slide valve (10, 12), which dosing channel is delimited both towards the pump chamber (17) and towards the medium reservoir by a cross-sectional widening in each case.
  2. Dosing device as claimed in Claim 1, characterised in that the pump chamber comprises at least one housing-side reception space (14) to which is allocated at least one displacement body (11) which is movable together with the slide valve (10, 12) and whose shape is tailored to suit the cross-section of the reception space (14) in such a manner that upon insertion into the reception space (14) the displacement body (11) almost completely fills said reception space.
  3. Dosing device as claimed in Claim 1, characterised in that a pump spring arrangement (15) serving as a return stroke drive is disposed outside the flow paths of the medium to be dispensed, in particular outside the pump chamber (17).
  4. Dosing device as claimed in Claim 1, characterised in that a return stroke spring arrangement allocated to a valve body (16) of the outlet valve is positioned separately from the flow path of the medium to be dispensed.
  5. Pumping device of a dosing device as claimed in Claim 1, characterised in that the pumping device is designed as a structural unit which is manufactured separately from the dosing device and can be connected to the dosing device in a releasable manner.
EP02008878A 2001-09-21 2002-04-20 Dosing device with a fluid container and pump therefor Expired - Lifetime EP1295646B1 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
DE20212898U DE20212898U1 (en) 2002-04-20 2002-08-20 Dispensing device, includes pump with sliding valve for removing liquid from reservoir
CNB02823152XA CN1283365C (en) 2001-09-21 2002-09-17 Dosing device comprising a medium reservoir and corresponding pump device
JP2003530432A JP4210215B2 (en) 2001-09-21 2002-09-17 Dosing device with medium reservoir and pump device therefor
PCT/EP2002/010421 WO2003026805A1 (en) 2001-09-21 2002-09-17 Dosing device comprising a medium reservoir and corresponding pump device
PL367350A PL200833B1 (en) 2001-09-21 2002-09-17 Dosing device comprising a medium reservoir and corresponding pump device
US10/490,573 US7182226B2 (en) 2001-09-21 2002-09-17 Dosing device comprising a medium reservoir and corresponding pump device
CA2460534A CA2460534C (en) 2001-09-21 2002-09-17 Dosing device comprising a medium reservoir and corresponding pump device
BRPI0212901-9A BR0212901B1 (en) 2001-09-21 2002-09-17 metering device with a medium reservoir as well as pump device for a metering device.
ARP020103528A AR036555A1 (en) 2001-09-21 2002-09-19 DOSING DEVICE WITH FLUID CONTAINER AS ALSO PUMP DEVICE

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10148899 2001-09-21
DE10148899 2001-09-21

Publications (2)

Publication Number Publication Date
EP1295646A1 EP1295646A1 (en) 2003-03-26
EP1295646B1 true EP1295646B1 (en) 2006-12-20

Family

ID=7701333

Family Applications (3)

Application Number Title Priority Date Filing Date
EP02008877A Expired - Lifetime EP1295645B1 (en) 2001-09-21 2002-04-20 Metering device provided with a pump
EP02008876A Expired - Lifetime EP1295644B1 (en) 2001-09-21 2002-04-20 Dosing device with a reservoir and a pump
EP02008878A Expired - Lifetime EP1295646B1 (en) 2001-09-21 2002-04-20 Dosing device with a fluid container and pump therefor

Family Applications Before (2)

Application Number Title Priority Date Filing Date
EP02008877A Expired - Lifetime EP1295645B1 (en) 2001-09-21 2002-04-20 Metering device provided with a pump
EP02008876A Expired - Lifetime EP1295644B1 (en) 2001-09-21 2002-04-20 Dosing device with a reservoir and a pump

Country Status (5)

Country Link
EP (3) EP1295645B1 (en)
AR (3) AR036557A1 (en)
AT (3) ATE407745T1 (en)
DE (3) DE50208993D1 (en)
ES (2) ES2317962T3 (en)

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FR2871786B1 (en) * 2004-06-16 2007-08-10 Valois Sas DEVICE FOR DISPENSING FLUID PRODUCT
DE102004044344A1 (en) * 2004-09-09 2006-03-30 Ing. Erich Pfeiffer Gmbh metering
DE102004050679A1 (en) * 2004-10-13 2006-04-20 Ing. Erich Pfeiffer Gmbh metering
US7914497B2 (en) 2005-01-26 2011-03-29 Radius International Limited Partnership Catheter
DE102006008874B4 (en) 2006-02-21 2012-06-21 Ing. Erich Pfeiffer Gmbh Metering device with a manually operable pumping device
FR2903329B3 (en) 2006-07-10 2008-10-03 Rexam Dispensing Systems Sas SPRAY NOZZLE, SPRAY DEVICE AND USE THEREOF.
DE102008027599A1 (en) * 2008-06-10 2009-12-31 Meadwestvaco Calmar Gmbh Fluidaustragkopf
DE102009040783B4 (en) * 2009-09-09 2012-04-26 F. Holzer Gmbh Metering device for metered dispensing of liquid preparations, method for filling and use of a metering device according to the invention
DE102009051570B3 (en) 2009-10-23 2011-06-22 Ing. Erich Pfeiffer GmbH, 78315 discharge
DE102013215599B4 (en) * 2013-08-07 2017-12-07 Aptar Radolfzell Gmbh Pumping device and dispenser for liquid or pasty media
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Also Published As

Publication number Publication date
EP1295645B1 (en) 2008-09-10
ES2317962T3 (en) 2009-05-01
EP1295646A1 (en) 2003-03-26
DE50213095D1 (en) 2009-01-22
ES2276868T3 (en) 2007-07-01
AR036555A1 (en) 2004-09-15
ATE407745T1 (en) 2008-09-15
DE50212754D1 (en) 2008-10-23
DE50208993D1 (en) 2007-02-01
AR036556A1 (en) 2004-09-15
EP1295644A1 (en) 2003-03-26
ATE416848T1 (en) 2008-12-15
ATE348664T1 (en) 2007-01-15
EP1295644B1 (en) 2008-12-10
AR036557A1 (en) 2004-09-15
EP1295645A1 (en) 2003-03-26

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