EP0245319B1 - Dispositif de distribution de matieres visqueuses telles que des liquides, cremes, pates ou similaires contenus dans un recipient de stockage - Google Patents

Dispositif de distribution de matieres visqueuses telles que des liquides, cremes, pates ou similaires contenus dans un recipient de stockage Download PDF

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Publication number
EP0245319B1
EP0245319B1 EP86906280A EP86906280A EP0245319B1 EP 0245319 B1 EP0245319 B1 EP 0245319B1 EP 86906280 A EP86906280 A EP 86906280A EP 86906280 A EP86906280 A EP 86906280A EP 0245319 B1 EP0245319 B1 EP 0245319B1
Authority
EP
European Patent Office
Prior art keywords
piston
piston rod
seal
annular seal
pump
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP86906280A
Other languages
German (de)
English (en)
Other versions
EP0245319A1 (fr
Inventor
Karl-Heinz Schmidt
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.)
SCHOTTE GMBH
Original Assignee
SCHOTTE 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 SCHOTTE GmbH filed Critical SCHOTTE GmbH
Priority to AT86906280T priority Critical patent/ATE47987T1/de
Publication of EP0245319A1 publication Critical patent/EP0245319A1/fr
Application granted granted Critical
Publication of EP0245319B1 publication Critical patent/EP0245319B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • 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

Definitions

  • the invention relates to a device according to the preamble of claim 1.
  • Such a device is known from GB-A 20 91 818.
  • the object of the invention is to create a device of the generic type in which the tightness is ensured in both dead positions of the pump piston, that is to say when the piston is fully retracted or extended.
  • two raised seats which cooperate with the sleeve-like ring seal and are arranged one behind the other with axial spacing, are provided on the guide bushing in such a way that the ring seal includes one of the two aforementioned sealing seats in both end positions of the piston, but between the end positions of the piston is arranged with play to the guide bush.
  • This configuration ensures that in addition to the sealing in the top dead center position already achieved in the prior art, a sealing of the ventilation line is also ensured in the bottom dead center position.
  • the invention proposes that an annular seal is arranged on the end part of the piston rod immersed in the cylinder, behind which the delivery channel opens out laterally in the direction of conveyance of the medium, and that the piston on the piston rod is axially adjustable to such an extent that the piston is in its one end position is arranged at an axial distance from the ring seal and releases the lateral channel opening, while in the other end position the piston bears tightly against the ring seal.
  • the design according to claim 2 has the particular advantage that the outlet of the piston pump is only open when the medium is intended to be conveyed by means of the piston pump, but otherwise the outlet is blocked by means of the ring seal tightly fitting against the piston, so that when the device is not in use and in one of the pump pistons, which is in the dead position, no medium can pass the outlet line.
  • the suction line is additionally blocked when the piston rod is pressed into the cylinder.
  • the piston rod can be locked in its end positions, in particular also in the pressed-in end position, by rotating the piston rod about its longitudinal axis, so that inadvertent actuation of the piston pump is prevented.
  • the end position of the piston rod can also be fixed in a form-fitting manner, in which the suction line is blocked.
  • a piston pump is held on a screw cap 1 for detachable and tight connection of a storage container (not shown), flowable medium, for example perfume or cream, the cylinder 2 of which is smaller in diameter than the inside diameter of the screw cap 1 is.
  • the piston pump is also arranged coaxially with the screw cap 1.
  • the cylinder 2, which is open at the top, is closed by means of an end wall 3 which is connected to the screw cap 1 by means of a plug-in connection which is secured by latching.
  • a connecting piece 4 is formed, in which a suction line 5 engages tightly.
  • a valve body 6 which automatically closes by means of gravity against the conveying direction of the medium and which cooperates with a valve seat 7 arranged in the connecting piece 4.
  • a guide bushing 8 is formed in the displacement of the cylinder, through which the piston rod 9 of the piston pump passes through a longitudinal air gap 10.
  • the piston rod 9 is penetrated by a delivery channel 11 forming the outlet line of the piston pump.
  • a pin 12 is inserted frictionally.
  • a relatively soft ring seal 13 protruding laterally beyond the piston rod 9 is formed on the end part of the pin 12 protruding from the piston rod 9.
  • a longitudinal groove 14 is arranged in the pin 12, which on the one hand opens into the feed channel 11 at the top, and on the other hand merges into a lateral opening 15 of the piston rod 9.
  • the piston 16 of the piston pump is mounted such that it can be adjusted axially to a limited extent, which engages the ring seal 13 in one end position and closes the opening 15 in the other end position.
  • the piston rod 9 is assigned a return spring 17 arranged with a prestress, which is supported on the one hand on the pin 12 and on the other hand on a shoulder 18 of the cylinder 2.
  • the piston 16 has an integrally formed, cuff-like ring seal 19 which interacts with the cylinder 2 and strives from the piston end face facing the suction line 5.
  • a connecting piece 20 comprising the piston rod 9 is formed on the other end face of the piston.
  • a cuff-like ring seal 21 is formed on the piston coaxially with this, which comprises the guide bushing 8.
  • Two annular, raised sealing seats 22 and 23, which are arranged one behind the other at an axial distance, are formed on the outside of the latter.
  • a ventilation opening 24 is provided in the cylinder 2, above the piston 16.
  • a cam 25 strives from the inside of the guide bushing 8 and engages in an adjustable manner in a longitudinal groove 26 of the piston rod 9.
  • the groove 26 has at both end parts a circumferential groove extension 27, the length of which corresponds at least to the width of the cam 25.
  • this device is tightly connected to a storage container so that the suction line 5 extends into the medium to be conveyed, and if the piston rod 9 has been depressed manually for the first time, the medium is sucked into the displacement of the piston pump medium after the piston rod 9 has been released, the valve body 6 temporarily lifts off its valve seat 7 and furthermore the piston 16 bears tightly on the ring seal 13.
  • the ring seal 13, influenced by the return spring 17, is again placed tightly on the piston 16, so that no medium can pass through the channel 11 in the upper end position described above.
  • the channel 11 is also blocked in the lower piston end position, because the ring seal 13 plunges tightly into a sealing seat 28 formed in the cylinder 2.
  • the latter can optionally be fixed relative to the cylinder 2, for which purpose only the piston rod 9 has to be rotated about its longitudinal axis until the cam 25 engages in one of the groove extensions 27 extending in the circumferential direction.
  • any overpressure which may arise in the container provided with the device produces an improved seal with respect to the ventilation line, which the seal 21 is pressed against the sealing seat 22 or 23 corresponding to the position.
  • FIG. 4 shows a view of the locking connection of the piston rod 9 and guide bush 8.
  • the piston rod 9 can be axially displaced in accordance with the longitudinal groove 26, while in the lower and upper end position a rotation in the radial direction can take place through the groove extensions 27 for the purpose of locking under spring tension.
  • All parts of the device, with the exception of the return spring 17, are preferably made of plastic and are produced by archiving.

Landscapes

  • Reciprocating Pumps (AREA)

Abstract

Dispositif de distribution de matières visqueuses contenues dans un récipient de stockage au moyen d'une pompe à piston qui est fixée à la sortie du récipient de stockage, le cylindre (2) de la pompe qui est plus petit en diamètre que le dispositif étant maintenu à l'intérieur de celui-ci. La bielle (9) est guidée avec un déplacement limité longitudinalement à l'intérieur d'un alésage du dispositif et contre la force d'un ressort de rappel (17). Un canal de ventilation est prévu qui conduit vers le récipient de stockage et l'alésage du dispositif conçu pour guider la bielle se prolonge dans une tubulure (8) disposée coaxialement et orientée vers le tuyau d'aspiration (5) de la pompe à piston. La bielle traverse l'alésage précité ainsi que la tubulure en laissant un vide (10), et possède une ouverture de ventilation (32) dans le cylindre de la pompe entre le couvercle du dispositif et la bielle lorsqu'elle est dans sa position extrême supérieure.

Claims (5)

1. Dispositif de distribution de matières visqueuses telles que des liquides, crèmes, pâtes ou similiaires contenus dans un récipient de stockage, au moyen d'une pompe à piston qui est fixée, de manière à réaliser une fermeture étanche et, le cas écheant, à être amovible, à la sortie du réservoir au moyen d'un dispositif, par exemple d'un capuchon (1), le cylindre de pompe (2), dont le diamètre est inférieur à celui de ce dispositif, étant maintenu à l'intérieur du dispositif, la tige de piston (9) étant guidée dans un manchon de guidage (8) du dispositif de manière à se déplacer longitudinalement en s'opposant à la force d'un ressort de rappel (17) et en laissant libre un espace rempli d'air, cet espace rempli d'air constituant le conduit d'amenée d'air aboutissant au réservoir, le cylindre de pompe (9) comportant, entre le couvercle du dispositif et le piston de pompe (16), dans sa position d'extrémité la plus haute, une ouverture pour l'entrée de l'air et, dans le piston (16), du côté frontal faisant face au couvercle du dispositif, un joint qui, lorsque le piston (16) est dans sa position d'extrémité la plus haute, obture le manchon de guidage (8), le joint (21) qui coopère avec le manchon de guidage (8) étant par ailleurs constitué par une manchette élastique et enserrant le manchon de guidage (8) lorsque le piston (16) est dans sa position d'extrémité la plus haute, de manière à réaliser une fermeture étanche, notamment par une extension élastique, caractérisé en ce que le manchon de guidage (8) comporte deux sièges de joint convexes (22 et 23) qui sont disposés dans le sens radial à une certaine distance l'un derrière l'autre et coopèrent avec le joint annulaire (21) constitué par une manchette, en ce que, dans les deux positions d'extrémité du piston (16), le joint annulaire (21) enserre l'un des deux sièges de joint (22 ou 23) déjà mentionnés en réalisant une fermeture étanche, mais lorsque le piston se trouve entre les positions d'extrémité, laisse un jeu par rapport au manchon de guidage (8).
2. Dispositif selon la revendication 1, dans lequel la tige de piston (9) est traversée par un conduit de distribution (11) constituant la canalisation de sortie, caractérisé en ce que l'extrémité de la tige de piston (9) qui pénètre dans le cylindre (2) comporte un joint annulaire (13) et que le conduit de distribution (11) débouche latéralement en arrière dans la direction de distribution du milieu et en ce que le piston (16) est monté sur la tige de piston (9) de manière à pouvoir, se déplace d'une manière limitée de sorte que, dans l'une de ses positions d'extrémité le piston (16) se trouve à une certaine distance dans le sens axial du joint annulaire (13) et dégage le débouche latéral du conduit tandis que, dans son autre position d'extrémité, le piston (16) s'applique contre le joint annulaire (11) en réalisant une fermeture étanche.
3. Dispositif selon la revendication 2, caractérisé en ce que le joint annulaire (13) monté sur la tige de piston (9) est conçu de telle manière qu'il pénètre, en réalisant une fermeture étanche, dans un siège de joint (28) du cylindre (2) situé, dans la direction de déplacement du milieu, en avant du piston (16).
4. Dispositif selon l'une des revendications 2 ou 3, caractérisé en ce que le joint annulaire (13) est monté sur un embout (12) qui est engagé dans le conduit (11) de la tige de piston et est fixé au moins par frottement et qui comporte au moins une rainure longitudinale (14) qui, d'une part, débouche du côté frontal de l'embout (12) qui est à l'opposé du joint annulaire (13) et qui, d'autre part, aboutit à un passage (15) situé dans la tige de piston (9) immédiatement après le joint annulaire (13) dans la direction d'écoulement du milieu.
5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que la tige de piston (9) est montée dans un manchon de guidage (8) situé à poste fixe sur le bâti, de manière à pouvoir se déplacer dans le sens axial et tourner autour de son axe longitudinal, que le manchon de guidage (8) comporte une came (25) qui fait saillie vers l'intérieur et qui s'engage dans une rainure longitudinale (26) de la tige de piston (9) de manière à pouvoir se déplacer par rapport à cette dernière et en ce que la rainure (26) comporte dans les deux positions d'extrémité de la tige de piston (9), un prolongement de rainure (27) qui s'étend dans le sens périphérique en face de la came (25) correspondante.
EP86906280A 1985-11-06 1986-11-04 Dispositif de distribution de matieres visqueuses telles que des liquides, cremes, pates ou similaires contenus dans un recipient de stockage Expired EP0245319B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86906280T ATE47987T1 (de) 1985-11-06 1986-11-04 Vorrichtung zum foerdern von viskosen materialien, wie fluessigkeiten, creme, pasten oder dergleichen aus einem vorratsbehaelter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8531330U DE8531330U1 (de) 1985-11-06 1985-11-06 Vorrichtung zum Fördern von viskosen Materialien, wie Flüssigkeiten, Creme, Pasten oder dgl. aus einem Vorratsbehälter
DE8531330U 1985-11-06

Publications (2)

Publication Number Publication Date
EP0245319A1 EP0245319A1 (fr) 1987-11-19
EP0245319B1 true EP0245319B1 (fr) 1989-11-15

Family

ID=6786974

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86906280A Expired EP0245319B1 (fr) 1985-11-06 1986-11-04 Dispositif de distribution de matieres visqueuses telles que des liquides, cremes, pates ou similaires contenus dans un recipient de stockage

Country Status (3)

Country Link
EP (1) EP0245319B1 (fr)
DE (2) DE8531330U1 (fr)
WO (1) WO1987002976A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5405057A (en) * 1993-10-21 1995-04-11 Moore; David G. Manually actuated pump
DE19756442A1 (de) * 1997-12-18 1999-06-24 Pfeiffer Erich Gmbh & Co Kg Spender für Medien
CN100494008C (zh) * 2006-06-15 2009-06-03 丁要武 弹簧外置式乳液泵

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1415269A (fr) * 1963-11-30 1965-10-22 Petite pompe à piston en matière plastique pour vider un récipient muni de cette pompe
US3359917A (en) * 1966-03-01 1967-12-26 Calmar Inc Liquid dispenser
ES409434A1 (es) * 1971-12-16 1976-01-01 Pfeiffer Kunststofftech Gmbh Perfeccionamientos en los dispositivos para emitir liquidoso productos pastosos o cremosos.
IT1134954B (it) * 1981-01-07 1986-08-20 Sar Spa Pompa ad azionamento manuale per la erogazione sotto pressione di sostanze liquide e/o dense racchiuse in un contenitore sul quale la pompa e' montata
DE3225910A1 (de) * 1982-07-10 1984-01-12 Pfeiffer Zerstäuber Vertriebsgesellschaft mbH & Co KG, 7760 Radolfzell Zerstaeuber- oder dosierpumpe

Also Published As

Publication number Publication date
EP0245319A1 (fr) 1987-11-19
WO1987002976A1 (fr) 1987-05-21
DE3666942D1 (en) 1989-12-21
DE8531330U1 (de) 1986-03-06

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