EP0189549B1 - Dispositif d'écoulement pour médias coulants - Google Patents

Dispositif d'écoulement pour médias coulants Download PDF

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Publication number
EP0189549B1
EP0189549B1 EP85115117A EP85115117A EP0189549B1 EP 0189549 B1 EP0189549 B1 EP 0189549B1 EP 85115117 A EP85115117 A EP 85115117A EP 85115117 A EP85115117 A EP 85115117A EP 0189549 B1 EP0189549 B1 EP 0189549B1
Authority
EP
European Patent Office
Prior art keywords
bacteria filter
filter
wall surface
discharge
ring seal
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
EP85115117A
Other languages
German (de)
English (en)
Other versions
EP0189549A2 (fr
EP0189549A3 (en
Inventor
Hans-Josef Schütz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aptar Radolfzell GmbH
Original Assignee
Ing Erich Pfeiffer GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ing Erich Pfeiffer GmbH filed Critical Ing Erich Pfeiffer GmbH
Publication of EP0189549A2 publication Critical patent/EP0189549A2/fr
Publication of EP0189549A3 publication Critical patent/EP0189549A3/de
Application granted granted Critical
Publication of EP0189549B1 publication Critical patent/EP0189549B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D34/00—Containers or accessories specially adapted for handling liquid toiletry or cosmetic substances, e.g. perfumes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0037—Containers
    • B05B11/0039—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means
    • B05B11/0044—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0037—Containers
    • B05B11/0039—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means
    • B05B11/0044—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means
    • B05B11/00444—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means with provision for filtering or cleaning the air flow drawn into the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1001—Piston pumps
    • B05B11/1023—Piston pumps having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem
    • B05B11/1026—Piston pumps having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem the piston being deformable and its deformation allowing opening of the outlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
    • B67D7/02—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring liquids other than fuel or lubricants
    • B67D7/0205—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring liquids other than fuel or lubricants by manually operable pumping apparatus

Definitions

  • the invention relates to a discharge device for flowable media contained in a memory, in particular for pharmaceutical and / or cosmetic preparations, according to the preamble of patent claim 1.
  • DE-A-2 746 993 has disclosed a discharge device of this type, the filter of which is arranged as an annular coaxial filter between two jacket walls. If you want to achieve a sufficiently large filter area here, then a correspondingly large outside diameter of the filter and a correspondingly large diameter of the receptacle for the filter required. The neck of the storage device receiving the discharge device must then be correspondingly wide, which is why the known design is not suitable for numerous given storage sizes.
  • filter arrangements have become known in which the filter is in any case outside the memory.
  • the width of the discharge device in the area of the filter is so large that an introduction of this area through the storage neck and into the storage is excluded. It is also not a germ filter, but a water-repellent filter.
  • the invention has for its object to provide a discharge device of the type mentioned so that the penetration of germs is largely avoided, such that the addition of germicidal stabilizing agents can be dispensed with even in preparations that could be a breeding ground for germs or the amount of these stabilizers can be significantly reduced.
  • a discharge device of the type mentioned so that the penetration of germs is largely avoided, such that the addition of germicidal stabilizing agents can be dispensed with even in preparations that could be a breeding ground for germs or the amount of these stabilizers can be significantly reduced.
  • the germ filter preferably consists of a fiber filter made of polytetrafluoroethylene or the like.
  • the compact, space-saving housing of the germ filter is further improved by the fact that the germ filter is placed against the wall surface through which the ventilation duct has a through opening and is preferably parallel with a short distance or at constant distances from this wall surface.
  • the ventilation channel in the area of the germ filter is sealed with at least one ring seal, the ring seal preferably being formed in one piece with the germ filter, so that even with a relatively heavily added germ filter it is prevented in any case that also only a part of the ventilation air drawn into the active substance storage can bypass the germ filter.
  • the, in particular bead-like ring seal is formed by pressing, gluing, welding or the like. the ring seal expediently adjoins the associated wall surface of the dispenser.
  • the germ filter is multiple, in particular many times larger than the rest of the cross-section of the ventilation connection, wherein preferably the germ filter with its ring seal and the associated wall surface penetrated by the ventilation channel delimits a filter inlet chamber into which the substantially smaller passage opening, in particular the Germ filter located centrally opposite, opens out.
  • a window-like holding frame which is preferably attached directly to the wall surface, such as being welded, glued or the like, and on which the germ filter is preferably attached to the same, ring seal protruding over its thickness on both sides as against the wall surface, so that a good sealing pressure can be achieved.
  • the germ filter lies within the active substance store mentioned, as a result of which it is effectively protected against mechanical loads or damage and only comes into contact with the air which flows into the store through the ventilation connection for volume compensation.
  • a particularly simple assembly is obtained if the germ filter is arranged on an active substance discharge pump, such as the housing of a manually operated piston pump.
  • the germ filter is expediently arranged at approximately constant intervals on a wall surface which is approximately curved about the central axis of the discharge channel and / or immediately afterwards on a fastening flange of the discharge pump which projects above this wall surface.
  • the pump housing is in two parts, for example composed of a cylinder housing guiding the pump piston and a storage end cap closing it at the outer end, the germ filter is expediently only attached to one of these two components, preferably to the cylinder housing.
  • the discharge pump 1 has an active substance store, which is otherwise not shown in detail, which is essentially axially symmetrical Pump housing 2, which consists essentially of a gradually narrowing towards the inner end of the cylinder housing 3 and an end cap 4, which is attached to the outer, furthest end of the housing 3 by clip-like snap-in so that it covers the jacket of the Cylinder housing 3 in the area of the associated end overlaps both on the inner and on the outer circumference.
  • a pump piston 6 is slidably guided with a piston sleeve 7 made of elastic material, which tapers in the manner of a truncated cone to the outer end of the housing 2 and tapers with it inner end is guided in the manner of an annular sealing lip on the track 5.
  • a piston sleeve 7 made of elastic material, which tapers in the manner of a truncated cone to the outer end of the housing 2 and tapers with it inner end is guided in the manner of an annular sealing lip on the track 5.
  • an elastic compression sleeve 8 which is formed in one piece therewith, the outer end of which is fastened to a piston tappet 9 by annular clamping.
  • the piston tappet 9 which protrudes from the cap 4 for manual operation, has a discharge channel 11 for the active substance which extends from the pump chamber 10 receiving the piston 6 to its outer end, the discharge channel 11 through the interior of the piston sleeve 7 and the Compression sleeve 8 leads.
  • a discharge valve 12 is provided, the annular movable valve closing part of which is formed by a valve lip projecting annularly over the inner surface of the component which forms the piston sleeve 7 and / or the compression sleeve 8.
  • the valve seat 14 for this valve closing part 13 is formed by the piston tappet 9 and is flared at an obtuse angle towards the inner end of the discharge pump 1.
  • the valve closing part 13 is pressed against the valve seat 14 by the axial prestressing of the compression sleeve 8.
  • the discharge valve 12 can be designed as a pressure relief valve or, as in the exemplary embodiment shown, as a mechanically opening valve which is opened at the end of the pump stroke by running the piston sleeve 7 onto a stop shoulder 15 of the pump housing 2.
  • the pump piston 6 is loaded by a prestressed return spring 16 arranged in the cylinder housing 3, which is supported on the one hand at the inner end of the piston rod 9 and on the other hand in the region of an inlet valve 17 designed as a check valve for the pump chamber 10 relative to the pump housing 2.
  • the discharge pump 1 is expediently arranged in or in the storage indicated by dash-dotted lines at 20 in such a way that the pump housing 2 engages in the neck 21 of the storage 20 following the end cap 4 and one provided on the cap 4 and above it
  • the circumferential projecting annular fastening flange 22 is sealed against the outer end face of the neck 21.
  • a discharge channel 23 leads through the discharge pump 1 as a ventilation connection between the interior of the reservoir 20 and the outside atmosphere.
  • the ventilation channel 23 is formed between the outside atmosphere and a ventilation valve 24 located inside the pump housing 2 in a filter inlet chamber 25 by an annular gap, which is located radially on the inside is delimited by the outer section of the piston tappet 9 and the compression sleeve 8 adjoining it and radially on the outside by an inner sleeve 26 which that engages in the cylinder housing 3 section of the end cap 4.
  • the wall 27 of the housing 3 is penetrated by an axially slot-shaped passage opening 28, which establishes the ventilation connection to the inlet chamber 25 and the interior of the store 20.
  • the movable valve closing part 29 of the ventilation valve 24 is formed by a portion of the piston sleeve 7 or the compression sleeve 8 which is enlarged in the shape of a truncated cone on the outer circumference against the pump chamber 10, this portion lying essentially in the same axial area as the valve closing part 13.
  • the valve seat 30 for the valve closing part 29 the inner end of the inner sleeve 26 is provided, on the radially inner end edge of which the valve closing part 29 bears under initial tension in the initial position of the pump piston 6 such that the discharge valve 12 is simultaneously under closing pressure. In the starting position, both the discharge duct 11 and the ventilation duct 23 are therefore necessarily sealed.
  • the valve closing part 29 lifts off the valve seat 30, so that the ventilation valve 24 and thus the ventilation channel 23 are opened into the interior of the accumulator 20.
  • a germ filter 31 is arranged, which is placed directly adjacent to the outer periphery of the cylinder housing 3 on its associated wall surface 32.
  • the flat, for example circular disc-shaped germ filter 31 is arranged in the region of the passage opening 28 and symmetrically to the axial plane of the discharge pump 1 passing through it in such a way that that of the input chamber 25 ventilation air flowing into the storage 20 can only and completely enter the storage 20 only through the germ filter 31.
  • the germ filter 31 is formed in one piece with a circumferential ring seal 33 which is closed adjacent to its outer circumference and projects in the manner of ring beads on both sides approximately equally far beyond the surfaces of the germ filter 31, such that a protruding ring seal is formed on each surface and the two ring seals in View of the germ filter 31 are substantially congruent with each other.
  • the germ filter 31 is pressed under pressure on the one hand against the wall surface 32 and on the other hand the ring seal 33 with its side facing away from this wall surface 32 is in contact with a window-like holding frame 34 which, for example, by pressing, gluing, welding or the like on the cylinder -Housing 3, in particular is exclusively attached to the wall surface 32;
  • the holding frame 34 is designed so that it is also attached to the end cap 4 in the region of the inner end face of the fastening flange 22, but in most cases it is expedient to hold the holding frame 34 only on one of the two, that Fasten the pump housing 2 forming components and, if necessary, to engage in the end cap 4 in the area of the mounting flange 22.
  • the central opening of the holding frame 34 forms the inlet opening for the ventilation air emerging from the germ filter 31 into the reservoir 20; this inlet opening is only slightly smaller than the filter field within the ring seal 33.
  • the holding frame 34 is expediently at least partially angular in cross section, so that one angle leg overlaps the ring seal 33 and the other angle leg is used for attachment to the pump housing 2.
  • the holding frame 34 can also be formed, for example, by at least one ring or sleeve which is pushed and / or welded onto the pump housing 2, for example by pressing, in such a way that the holding frame surrounds the housing 2 on the outer circumference or in the central axis 35 of the discharge pump 1.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)
  • Closures For Containers (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Reciprocating Pumps (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Claims (10)

  1. Dispositif distributeur pour substances de grande fluidité renfermées par un réservoir (20), en particulier pour préparations pharmaceutiques et/ou cosmétiques, comprenant un corps de base (2, 4) présentant une partie de fixation jusqu'à laquelle le dispositif distributeur peut être introduit dans le réservoir, et par l'intermédiaire de laquelle il peut être relié audit réservoir (20), et une région attenante à la partie de fixation et conçue pour être introduite dans un orifice du réservoir, avec une enveloppe de carter (27) formant des surfaces de paroi périphérique (32), ainsi qu'avec un canal (11) délivreur de la substance, et une liaison de ventilation qui forme un canal de ventilation (23) pour la compensation de volume de la substance délivrée, et traverse un filtre de stérilisation (31) installé sur l'enveloppe de carter, et dans la région d'un orifice (28) de circulation d'air, caractérisé par le fait que le filtre de stérilisation (31) est de réalisation mince et aplatie, et se trouve sur l'une des surfaces de paroi périphérique (32), pour l'essentiel parallèlement et à faible distance de cette dernière, la surface de paroi (32) étant traversée, par l'orifice de circulation (28), pour l'essentiel radialement et transversalement par rapport au filtre aplati de stérilisation (31).
  2. Dispositif selon la revendication 1, caractérisé par le fait que le filtre de stérilisation (31) est d'une réalisation de type membrane et consiste, de préférence, en un filtre en fibres de polytétrafluoréthylène ou matière similaire.
  3. Dispositif selon la revendication 1 ou 2, caractérisé par le fait que le filtre de stérilisation (31) est appliqué contre la surface de paroi (32) et se trouve, notamment, à une distance approximativement constante de cette surface de paroi (32) matérialisant, de préférence, une surface périphérique extérieure de l'enveloppe de carter (27).
  4. Dispositif selon l'une des revendications précédentes, caractérisé par le fait que le canal de ventilation (23) est rendu étanche, dans la région du filtre de stérilisation (31), par au moins une garniture annulaire d'étanchement (33), cette garniture annulaire d'étanchement (33) étant préférentiellement réalisée d'un seul tenant avec le filtre de stérilisation (31).
  5. Dispositif selon la revendication 4, caractérisé par le fait que la garniture annulaire d'étanchement (33), notamment du type bourrelet, est formée par compression, collage, soudage ou procédé similaire, et/ou est attenante à la surface de paroi associée (32) du dispositif distributeur.
  6. Dispositif selon l'une des revendications précédentes, caractérisé par le fait que la dimension du filtre de stérilisation (31) est plusieurs fois supérieure à celle du reste de la section transversale de la liaison de ventilation ; et par le fait que le filtre de stérilisation (31) délimite de préférence, avec sa garniture annulaire d'étanchement (33) et la surface de paroi associée (32) traversée par le canal de ventilation (23), une chambre d'entrée de filtration (25) dans laquelle débouche l'orifice de circulation (28) qui est notablement plus petit et se trouve, notamment, en vis-à-vis du filtre de stérilisation (31).
  7. Dispositif selon l'une des revendications précédentes, caractérisé par le fait que, sur son côté tourné à l'opposé de la surface de paroi (32), le filtre de stérilisation (31) est entouré par un cadre de retenue (34) du type fenêtre, qui est de préférence directement fixé à la surface de paroi (32), par exemple rapporté par soudage, collé ou assujetti d'une manière similaire ; et par le fait que le filtre de stérilisation (31) est notamment appliqué, contre ce cadre de retenue (34), par la même garniture annulaire d'étanchement (33) par laquelle il est appliqué contre la surface de paroi (32), et qui fait de part et d'autre saillie au-delà de son épaisseur.
  8. Dispositif selon l'une des revendications précédentes, caractérisé par le fait que le filtre de stérilisation (31) est installé sur une pompe (1) de distribution de substances, comme le carter (2) d'une pompe à piston actionnable à la main.
  9. Dispositif selon l'une des revendications précédentes, caractérisé par le fait que la surface de paroi (32) est curviligne dans la région du filtre de stérilisation (31), en particulier approximativement autour de l'axe médian (35) d'un canal délivreur (11) ; et/ou par le fait que le filtre de stérilisation (31) est installé dans la continuité directe d'une bride (22) de fixation du dispositif distributeur, qui déborde de la surface de paroi (32).
  10. Dispositif selon l'une des revendications précédentes, caractérisé par le fait qu'une soupape d'évent (24) est prévue dans le canal de ventilation (23) et/ou une soupape de distribution (12) est prévue dans le canal délivreur (11) ; et par le fait que, de préférence, au moins une soupape est fermée à force dans la position initiale de la pompe de distribution (1).
EP85115117A 1985-02-01 1985-11-28 Dispositif d'écoulement pour médias coulants Expired - Lifetime EP0189549B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3503354 1985-02-01
DE19853503354 DE3503354A1 (de) 1985-02-01 1985-02-01 Wirkstoff-spender

Publications (3)

Publication Number Publication Date
EP0189549A2 EP0189549A2 (fr) 1986-08-06
EP0189549A3 EP0189549A3 (en) 1987-08-19
EP0189549B1 true EP0189549B1 (fr) 1991-10-16

Family

ID=6261359

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85115117A Expired - Lifetime EP0189549B1 (fr) 1985-02-01 1985-11-28 Dispositif d'écoulement pour médias coulants

Country Status (4)

Country Link
US (1) US4694976A (fr)
EP (1) EP0189549B1 (fr)
JP (1) JPS61178570A (fr)
DE (2) DE3503354A1 (fr)

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Also Published As

Publication number Publication date
EP0189549A2 (fr) 1986-08-06
DE3584441D1 (de) 1991-11-21
JPS61178570A (ja) 1986-08-11
US4694976A (en) 1987-09-22
DE3503354A1 (de) 1986-08-07
EP0189549A3 (en) 1987-08-19

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