EP0289854A2 - Distributeur de fluides - Google Patents

Distributeur de fluides Download PDF

Info

Publication number
EP0289854A2
EP0289854A2 EP88106257A EP88106257A EP0289854A2 EP 0289854 A2 EP0289854 A2 EP 0289854A2 EP 88106257 A EP88106257 A EP 88106257A EP 88106257 A EP88106257 A EP 88106257A EP 0289854 A2 EP0289854 A2 EP 0289854A2
Authority
EP
European Patent Office
Prior art keywords
valve
piston
pump
section
discharge device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP88106257A
Other languages
German (de)
English (en)
Other versions
EP0289854B1 (fr
EP0289854A3 (en
Inventor
Lothar Graf
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
Application filed by Erich Pfeiffer GmbH, Ing Erich Pfeiffer GmbH filed Critical Erich Pfeiffer GmbH
Priority to AT88106257T priority Critical patent/ATE78778T1/de
Publication of EP0289854A2 publication Critical patent/EP0289854A2/fr
Publication of EP0289854A3 publication Critical patent/EP0289854A3/de
Application granted granted Critical
Publication of EP0289854B1 publication Critical patent/EP0289854B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • 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
    • 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
    • B05B11/1042—Components or details
    • B05B11/1061—Pump priming means

Definitions

  • the invention relates to a discharge device for media, in particular liquids, according to the preamble of patent claim 1.
  • a discharge device has become known in which a shortenable piston shaft is formed by two telescopically interlocking pipe parts, of which the inside carries a valve closing part.
  • the valve closing part is exposed in the pump chamber and the outlet valve is opened gradually during the pumping stroke, the opening cross section being enlarged over a relatively long period of time up to the maximum opening width. This can cause pressure in the pump chamber standing medium are hardly suddenly released for discharge, which prevents a high discharge speed and a complete discharge.
  • the invention has for its object to provide a discharge device of the type mentioned, which makes it possible with a simple structure to keep at least one valve, for example until a predetermined pressure is reached in a functional position, for example completely closed, and then suddenly to full opening width to open.
  • a thrust piston pump expediently has a Zy. cylinder housing with a pump piston which can be moved in a cylinder along a cylinder path via a pump stroke from a starting position to an end-of-stroke position with a piston shaft and which delimits a pump chamber in the cylinder to which an outlet duct leading to an outlet opening is connected via an outlet valve, wherein a shortenable portion of the piston skirt is provided for opening the exhaust valve between an actuating head and the exhaust valve.
  • the shortenable section of the piston skirt can preferably be positively secured against opening of the outlet valve on an initial part of the pump stroke of the pump piston and released on a subsequent lifting part for shortening under the pressure in the pump chamber.
  • the outlet valve cannot yet open, after which the safety device acting on the piston shaft against shortening reduces the pressure acting on it forces already preloaded piston shaft to shorten, which leads to a very quick opening of the exhaust valve.
  • the shortenable section of the piston skirt is designed as a bulging expandable compression section which preferably forms a one-piece component with the piston skirt and which can be secured in a narrow guide against expansion in the initial part of the pump stroke of the pump piston. If this compression section is stretched essentially cylindrically when it is in the guide, it takes up very little space and, moreover, it can be designed in this state in such a way that, due to its elasticity, no radially constricting forces act on it, so that it is stress-free.
  • the compression section in the stretched state has a bias in the direction of radial expansion, that is, in the direction of shortening or in the direction of opening the exhaust valve, so that its opening can take place even faster when the shortenable section is released.
  • valve closing part of the outlet valve is guided in a longitudinally movable manner with respect to the piston unit and is limited by a stop, preferably a driver for opening the outlet valve being provided which only takes a certain initial time Shortening the associated section of the piston skirt takes the outlet valve to the opening, so that the shortenable section is already in a shortening movement before the outlet valve begins to open.
  • the outlet valve such that it can be opened mechanically at the end of the pump stroke by a stop, that is to say mechanically, in addition to during the pump stroke due to the pressure in the pump chamber, which is particularly expedient if the pump chamber is not yet filled with medium and must therefore be vented through the outlet channel for filling.
  • a stop that is to say mechanically, in addition to during the pump stroke due to the pressure in the pump chamber, which is particularly expedient if the pump chamber is not yet filled with medium and must therefore be vented through the outlet channel for filling.
  • the same stop is provided both for the stroke end position of the pump piston and for the associated open position of the valve closing part.
  • the discharge device 1 according to FIGS. 1 and 2 has an essentially axially symmetrical thrust piston pump 2 with a cylinder housing 3 which is offset several times towards the inner end and which is provided at the outer end of its widest housing section with a one-piece annular flange 4 projecting over its outer circumference, which one can be inserted into a cap 5 in such a way that its outer end face is supported on a transverse wall of this cap 5.
  • the cap 5, which can have, for example, an internal thread surrounding the cylinder housing 3, is used to fasten the discharge device 1 to the neck of a vessel or the like, an annular seal for sealing being arranged between the inner end face of the ring flange 4 and the end face of the vessel neck.
  • a cylinder cover 6 In the rear end of the cylinder housing 3 there is inserted a cylinder cover 6 completely recessed therein, which is inserted with a disc-shaped ring part 7 into an inner groove of the flange ring 4 in a sealed manner by resilient snap-in.
  • the ring part 7 merges into a sleeve part 8, which projects into the cylinder housing 3 and lies on the largest part of its length adjoining the ring part 7 on the inner circumference of the cylinder housing 3.
  • a piston unit 9 is slidably guided, which has a cup-shaped or sleeve-shaped pump piston 10 and, for actuation, a piston shaft 11 protruding from the outer end of the cylinder housing 3 and passing through the cylinder cover 6.
  • the pump piston 10 is guided in a longitudinal section of the furthest part of the cylinder housing 3 provided as a cylinder 12 and thereby delimits a pump chamber 13.
  • the end of stroke position of the pump piston 10 is defined by a stop 14 in the form of an inwardly projecting annular shoulder between two sections of the pump chamber 13 that are offset from one another limited.
  • an outlet channel 16 leads through the tubular piston shaft 11 to an outlet opening 17, which is attached in an actuation which is attached to the outer end of the piston shaft 11 by being plugged on Head 18 is provided.
  • the actuating head 18 projects into a collar of the cap 5 surrounding it at a short distance.
  • the pump piston 10 is cup-shaped or cuff-shaped and has at the front end of its cuff jacket 19 an annular piston lip 20 which is flared conically at the front for guiding on the piston raceway of the cylinder 12.
  • the sleeve jacket 19 merges into an annular inwardly projecting end wall 22, over the rear end surface of which a further piston lip 21, which is flared to the rear, projects for guidance on the same piston raceway.
  • the piston shaft 11 which has an outer diameter that is reduced compared to the inner diameter of the sealing lips, extends in one part and has an outer diameter that is approximately constant up to the actuating head 18.
  • a ventilation valve 23 for the vessel which is only closed when the piston unit 9 or the actuating head 18 is in the initial position, is provided.
  • the valve seat 24 formed by an annular inner surface of this ventilation valve 23 is formed by the inner end edge of the sleeve extension 8, namely by a reduced diameter and by a truncated cone-shaped intermediate section into the remaining sleeve part 8, the end section formed in the starting position of the pump in the rear piston lip 21 engages and which is assigned as a valve-closing part 25 a truncated conical rearward transition section of the outer circumference of the piston skirt 11, this transition section directly adjoining the end wall 22.
  • ventilation openings 26 are evenly distributed over the handling in the jacket of the cylinder housing, these ventilation openings 26 are expediently formed by longitudinal slots that extend to the rear end face of the cylinder housing 3 or the contact surface of the flange ring 4 for the ring part 7 of the cylinder cover 6 are sufficient and covered by this to the outside.
  • the ventilation openings 26 surround the sleeve part 8 of the cylinder cover 6 and extend into the region of its frustoconical section, so that the passage of air is free.
  • the inner diameter of the sleeve part 8 is expanded compared to the outer diameter of the piston skirt 11, the sleeve part 8 in this area having longitudinal ribs 27 or similar guide projections evenly distributed over the circumference, the longitudinal edges of which can be adapted so closely to the outer diameter of the piston skirt 11 that they guide it practically without play.
  • the longitudinal ribs 27 are angled into radial ribs 28 on the rear or outer end face of the ring part 7, these radial ribs or similar projections with their free longitudinal edges expediently abutting the inner shoulder of the cap 5, which is formed, for example, by an annular disk-shaped transverse wall 29, so that the ring part 7 with the cap 5 can be pressed axially against its contact surface in the flange ring 4, or the flange ring 4 and the cylinder cover 6 between the cap 5 and the neck of the vessel are braced against each other.
  • the piston skirt 11 is guided through the transverse wall 29 with such a large clearance that ventilation air for the vessel can flow through. This Be.
  • Ventilation air can also between the longitudinal ribs 27 and the subsequent, in the inner diameter opposite the piston.
  • Shaft 11 flow through the end portion of the sleeve part 8 and the piston shaft 11 forming the valve seat 24.
  • the ventilation air can flow through the cylinder housing 3 into the vessel.
  • the outlet valve 15 has an inner valve closing part 30 which tapers conically at the outer circumference at the rear at an acute angle and which at the rear tapered end merges into a valve tappet 31 which is in the piston skirt 11 and is provided with continuous longitudinal slots and is reduced in diameter compared to the valve opening.
  • the valve closing part 30 merges, on the one hand, into a central mandrel 32 projecting beyond the front end of the pumping piston 10 into the pump chamber 13 and, on the other hand, into a stop sleeve 33 which surrounds this mandrel 32 with a radial spacing and which has an outer circumference of only a very small radial spacing from a few, for example 1 to 2 tenths of a millimeter, is located directly adjacent to the inner circumference of the sleeve jacket 19 of the pump piston 10 and can thus be guided directly on the associated side of the outlet valve 15 on the pump piston 10.
  • the rear end face of the stop sleeve 33 is at a distance from the inner bottom surface of the pump piston 10, 33 being provided in the stop sleeve 33 with longitudinal openings in the form of longitudinal slots in the sleeve jacket, which connect the pump chamber 13 to the outlet valve 15 over a relatively large width.
  • the front end face 34 of the stop sleeve 33 is set back from the front end face 35 of the pump piston 10 by an opening path of the exhaust valve 15, the stop 14 of the cylinder housing 3 associated with these end faces being so wide that it is in the path of movement of both end faces 34 , 35 lies.
  • the piston unit 9 is loaded by a return spring 36 located in the pump chamber 13 in the form of a helical compression spring, which extends with its front end beyond the stop 14 and whose rear end surrounding the mandrel 32 is supported on the bottom of the stop sleeve 33, so that the valve closing part 30 is also loaded by the return spring 36 towards its closed position.
  • a return spring 36 located in the pump chamber 13 in the form of a helical compression spring, which extends with its front end beyond the stop 14 and whose rear end surrounding the mandrel 32 is supported on the bottom of the stop sleeve 33, so that the valve closing part 30 is also loaded by the return spring 36 towards its closed position.
  • the valve seat 37 of the outlet valve 35 which is designed as an annular inner edge, is formed directly by the end wall 22 of the pump piston 10 and lies on the front or inner end face thereof.
  • the piston shaft 11 has a section with an enlarged inside diameter, the length of which is adapted to that of the valve tappet 31, and in which the valve tappet 31 slides smoothly on the associated side of the outlet valve 15 is led.
  • the piston shaft 11 is reduced in its inner diameter by means of an inner shoulder 38.
  • the outlet valve 15 is opened before the pump piston 10 hits the stop 14 by the pressure acting axially on the pump piston 10 and thus on the shortenable section 39. If the part of the shortenable section 39 which has been moved out of the sleeve part 8 of the cylinder cover 6 has reached a length for which the pump chamber pressure acting on the pumping piston 10 is sufficient for compression, the outlet valve 15 opens very quickly, because this part which is moved out yes is continued at the same time by the continuation of the pump stroke and the pressure forces required for expansion are reduced.
  • section 39 must first overcome the distance between driver 40 and end face 41 before outlet valve 15 opens, so that section 39 is already pre-compressed at the start of the opening process, and therefore for further compression required pressure forces only have to be relatively small.
  • the pump piston 10 can then be opened netem exhaust valve 15 reach the stop 14 so that the exhaust valve 15 can be kept open until the release of the actuating head 18 in the manner described.
  • the cylinder housing 3 merges into an inlet channel 42 which is suitable for connecting a riser pipe or the like and which is connected to the pump chamber 13 via an inlet valve 43 in the form of a ball check valve.
  • the associated end of the return spring 36 or its associated unwinding serves as a stop for the open position of the valve body of the inlet valve 43.

Landscapes

  • Reciprocating Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Nozzles (AREA)
EP88106257A 1987-05-08 1988-04-20 Distributeur de fluides Expired - Lifetime EP0289854B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88106257T ATE78778T1 (de) 1987-05-08 1988-04-20 Austragvorrichtung fuer medien.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873715300 DE3715300A1 (de) 1987-05-08 1987-05-08 Austragvorrichtung fuer medien
DE3715300 1987-05-08

Publications (3)

Publication Number Publication Date
EP0289854A2 true EP0289854A2 (fr) 1988-11-09
EP0289854A3 EP0289854A3 (en) 1989-12-06
EP0289854B1 EP0289854B1 (fr) 1992-07-29

Family

ID=6327066

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88106257A Expired - Lifetime EP0289854B1 (fr) 1987-05-08 1988-04-20 Distributeur de fluides

Country Status (3)

Country Link
EP (1) EP0289854B1 (fr)
AT (1) ATE78778T1 (fr)
DE (2) DE3715300A1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3836236A1 (de) * 1988-10-25 1990-04-26 Siegfried Kroschel Vorrichtung zum handbetaetigten verspruehen einer fluessigkeit
US4986453A (en) * 1989-05-15 1991-01-22 The Pittway Corporation Atomizing pump
DE4027672A1 (de) * 1990-08-31 1992-03-05 Pfeiffer Erich Gmbh & Co Kg Austragvorrichtung fuer medien
EP0505974A1 (fr) * 1991-03-28 1992-09-30 Ing. Erich Pfeiffer GmbH Distributeur de fluides
FR2704524A1 (fr) * 1993-04-29 1994-11-04 Step Dispositif portatif pour la distribution d'une substance fluide.
US5375745A (en) * 1991-09-05 1994-12-27 Ing. Erich Pfeiffer Gmbh & Co. Kg Media dispenser with initial pressure-relief state
US5655688A (en) * 1994-10-19 1997-08-12 Aptargroup, Inc. Atomizing pump with high stroke speed enhancement and valve system therefor
US5730335A (en) * 1994-03-16 1998-03-24 Afa Products, Inc. Precompression valve for trigger sprayer
EP2000219A1 (fr) * 2007-06-08 2008-12-10 Gotohti.Com Inc. Mécanisme de libération sous vide
EP4028339A4 (fr) * 2019-09-13 2023-11-22 Rieke LLC Soupape et joint résistant aux différentiels de pression
EP4074621A4 (fr) * 2021-01-22 2024-01-17 Hcp Packaging Co Ltd Pompe à liquide

Families Citing this family (4)

* 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
DE4417486A1 (de) * 1994-05-19 1995-11-23 Pfeiffer Erich Gmbh & Co Kg Austragvorrichtung für Medien
DE4438364A1 (de) * 1994-10-27 1996-05-02 Pfeiffer Erich Gmbh & Co Kg Austragvorrichtung für Medien sowie Verfahren und Vorrichtung zur Befüllung einer Austragvorrichtung
DE19502725B4 (de) * 1995-01-28 2004-03-04 Ing. Erich Pfeiffer Gmbh & Co Kg Austragvorrichtung für Medien

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3463093A (en) * 1967-01-17 1969-08-26 Erich Pfeiffer Kg Metallwarenf Simply operating push plunger pump housed in a container
US4117957A (en) * 1977-04-11 1978-10-03 George Duffey Atomizer valve assembly
EP0201701A2 (fr) * 1985-05-15 1986-11-20 Ing. Erich Pfeiffer GmbH & Co. KG Dispositif de pulvérisation manuel

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3463093A (en) * 1967-01-17 1969-08-26 Erich Pfeiffer Kg Metallwarenf Simply operating push plunger pump housed in a container
US4117957A (en) * 1977-04-11 1978-10-03 George Duffey Atomizer valve assembly
EP0201701A2 (fr) * 1985-05-15 1986-11-20 Ing. Erich Pfeiffer GmbH & Co. KG Dispositif de pulvérisation manuel

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3836236A1 (de) * 1988-10-25 1990-04-26 Siegfried Kroschel Vorrichtung zum handbetaetigten verspruehen einer fluessigkeit
US4986453A (en) * 1989-05-15 1991-01-22 The Pittway Corporation Atomizing pump
DE4027672A1 (de) * 1990-08-31 1992-03-05 Pfeiffer Erich Gmbh & Co Kg Austragvorrichtung fuer medien
EP0505974A1 (fr) * 1991-03-28 1992-09-30 Ing. Erich Pfeiffer GmbH Distributeur de fluides
US5316198A (en) * 1991-03-28 1994-05-31 Ing. Erich Pfeiffer Gmbh & Co. Kg Media dispenser with elastically deformable plunger
US5375745A (en) * 1991-09-05 1994-12-27 Ing. Erich Pfeiffer Gmbh & Co. Kg Media dispenser with initial pressure-relief state
WO1994025175A1 (fr) * 1993-04-29 1994-11-10 Etablissements Valois S.A. Dispositif portatif pour la distribution d'une substance fluide
FR2704524A1 (fr) * 1993-04-29 1994-11-04 Step Dispositif portatif pour la distribution d'une substance fluide.
US5730335A (en) * 1994-03-16 1998-03-24 Afa Products, Inc. Precompression valve for trigger sprayer
US5655688A (en) * 1994-10-19 1997-08-12 Aptargroup, Inc. Atomizing pump with high stroke speed enhancement and valve system therefor
EP2000219A1 (fr) * 2007-06-08 2008-12-10 Gotohti.Com Inc. Mécanisme de libération sous vide
US8056772B2 (en) 2007-06-08 2011-11-15 Gotohti.Com Inc. Vacuum release mechanism
EP4028339A4 (fr) * 2019-09-13 2023-11-22 Rieke LLC Soupape et joint résistant aux différentiels de pression
EP4074621A4 (fr) * 2021-01-22 2024-01-17 Hcp Packaging Co Ltd Pompe à liquide

Also Published As

Publication number Publication date
DE3873153D1 (de) 1992-09-03
ATE78778T1 (de) 1992-08-15
EP0289854B1 (fr) 1992-07-29
DE3715300A1 (de) 1988-11-24
EP0289854A3 (en) 1989-12-06

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