EP0867229A1 - Pulvérisateur manuel avec un évent étanche aux liquides - Google Patents

Pulvérisateur manuel avec un évent étanche aux liquides Download PDF

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Publication number
EP0867229A1
EP0867229A1 EP97830153A EP97830153A EP0867229A1 EP 0867229 A1 EP0867229 A1 EP 0867229A1 EP 97830153 A EP97830153 A EP 97830153A EP 97830153 A EP97830153 A EP 97830153A EP 0867229 A1 EP0867229 A1 EP 0867229A1
Authority
EP
European Patent Office
Prior art keywords
cylindrical chamber
container
liquid
piston
chamber
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.)
Withdrawn
Application number
EP97830153A
Other languages
German (de)
English (en)
Inventor
Piero Battegazzore
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.)
Guala Dispensing SpA
Original Assignee
Guala Dispensing SpA
Guala Dispensing SRL
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 Guala Dispensing SpA, Guala Dispensing SRL filed Critical Guala Dispensing SpA
Priority to EP97830153A priority Critical patent/EP0867229A1/fr
Publication of EP0867229A1 publication Critical patent/EP0867229A1/fr
Withdrawn legal-status Critical Current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
    • B05B11/0005—Components or details
    • B05B11/0059—Components or details allowing operation in any orientation, e.g. for discharge in inverted position
    • 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
    • B05B11/01—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
    • B05B11/1004—Piston pumps comprising a movable cylinder and a stationary piston
    • 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
    • B05B11/1009—Piston pumps actuated by a lever
    • B05B11/1011—Piston pumps actuated by a lever without substantial movement of the nozzle in the direction of the pressure stroke
    • 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
    • B05B11/1016—Piston pumps the outlet valve having a valve seat located downstream a movable valve element controlled by a pressure actuated controlling element

Definitions

  • the present invention relates to a manually-operated pump for spraying liquids
  • a manually-operated pump for spraying liquids comprising a trigger, a piston, which is actuated by the said trigger in opposition to a reaction spring and can move axially inside a first cylindrical chamber where the compression takes place of the liquid sucked up from a container that can be gripped in one hand, a suction tube, one end of which dips into the container and the other end of which is connected to the said first cylindrical chamber, a dispensing tube that communicates, on the one hand, with the said first cylindrical chamber and, on the other hand, with an atomizer member, first valve means located between the said dispensing tube and the said first chamber, second valve means located between the suction tube and the said first cylindrical chamber, and a standard element for mounting the pump on to the said container and supporting the said first cylindrical chamber and the said dispensing tube.
  • the said connection is fitted with suitable conventional sealing members which prevent the liquid from leaking out, as well as with suitable take-up means in the liquid suction tube which enable the liquid to be taken up not only when the container is in its usual vertical position, with the spraying device on top, but also when it is turned upside down and the liquid collects around the connection between the container and the pump, leaving the opening of the suction tube uncovered, which opening, as is known, is located in the vicinity of the closed base of the container.
  • the container which is usually made of moulded plastic, is made with thin walls.
  • the object of the present invention is therefore to produce a spray pump structure which can be used even upside down, with the container for the liquid being made of plastic with thin walls but without the container caving in as a result of an internal drop in pressure.
  • the pump according to the invention comprises a cylindrical body 1 that extends axially in the direction of the vertical axis X-X; this cylindrical body defines a first cylindrical chamber 2 having an open end 3 and a top closed by the wall 4.
  • the wall 4 has an annular edge 5 that engages, with the possibility of sliding axially, in an annular groove 6 carried by a body 7 which defines two cylindrical extensions 8 and 9 lying at right angles to each other.
  • the extension 9 which extends parallel with the axis X-X and concentrically with the cylindrical body 1, defines the housing 12 for the pump and forms the base for supporting and operating the trigger 13 via which the pump is actuated.
  • the trigger 13 can move angularly around the pivot 14.
  • the dispensing channel 10 is connected to the said first cylindrical chamber 2 via the passages 15 and 16.
  • the top wall 4 presses against the opposing surface of the body 7 and the passages 15 and 16 are therefore closed.
  • a piston 17 with an axial cavity 18 is actuated by the trigger 13 in a to and fro movement along the axis X-X, with its extension 19 projecting inside the cylindrical chamber 2 which has axial ribs 20 arranged in the shape of a cross on its internal surface.
  • a tubular body 21 extends coaxially from the said piston 17, in the opposite direction to the extension 19, and defines, internally, the continuation of the axial cavity 18 which is connected, in a manner that will be described below, to the suction tube 22 that dips into the container 23 containing the liquid 24 to be sprayed, in particular detergent.
  • the container 23 is connected to the standard tubular extension 9 via conventional attachment means and suitable sealing members.
  • a sleeve 25 Fixed on to the extension 19 of the piston 17 is a sleeve 25, the free end 26 of which is fitted with a flap valve 27 that works in association with the mouth 28 of the said extension 19 in the sense that it keeps the said mouth closed during the stage in which the liquid to be sprayed is compressed, and keeps it open during the stage in which the liquid is sucked up through the tubes 22 and 18.
  • the said piston 17 is actuated in its reciprocating motion along the axis X-X by the trigger 13, by means of lever-type connection members which are not illustrated since they are not crucial to an understanding of the present invention.
  • a tubular sleeve Coaxial to the extension 19 of the piston 17, and integral with the peripheral edge of the said piston, is a tubular sleeve which, via a first part 29, extends until it engages in a sliding manner around the outside of the wall of the cylindrical body 1, and, via a second part 30, which is in the shape of an upturned beaker, extends in an opposite direction until it engages in a sliding manner inside the chamber 31 defined by a second cylindrical body 32 supported by the tubular extension 9.
  • annular collar 33 Surrounding the part 29 of the said tubular sleeve is an annular collar 33 which defines a cavity 34 that houses one end of the spring 35, the other end of which is engaged in the cavity 36 formed by the flange 37 which is integral with the said first cylindrical body 1.
  • the edge 38 of the second part 30 of the said sleeve is in the shape of an elastically flexible lip that engages with the internal wall 39 of the second cylindrical chamber 31.
  • this edge means that the said second part 30 of the sleeve acts like a piston during the movement of the piston 17, with which it is integral as its axial continuation, in accordance with the operating methods which will be described below.
  • While the second cylindrical body 32 is open at the end facing the first cylindrical body 1, it is closed on the bottom by a flexible wall 40 having a central aperture 41 through which the tubular body 21 passes in a sliding manner, the inside of this tubular body 21 defining the tube 18.
  • the flexibility of the wall 40 is such that, when the air inside the second cylindrical chamber 31 is compressed by the piston 30, it allows this pressurized air to pass between the edge of the aperture 41 and the external surface 42 of the tube 21, as indicated by the arrows F in Figure 5 of the drawings.
  • the standard tubular extension 9 also contains the means, diagrammatically indicated by the reference 43, that enable the spray pump to be fastened to the neck 44 of the container 23.
  • the latter has thin walls and is made using a conventional plastic moulding process.
  • the spray pump is completed by a conventional cover indicated by the reference 45.
  • the suction tube 18 is connected to the body 47 of a device providing additional access so that liquid can be fed to the suction tube 18 even when the container 23 is turned upside down ( Figure 2), in which position the tube 22 can no longer suck up liquid.
  • This body 47 comprises an access channel 48 which extends parallel with the tube 18 and has a conical portion 49 that forms the seating of a ball valve 50.
  • the abovementioned channel 48 is connected to the tube 18 via the passage 51 and has an aperture 52 that faces the bottom wall 40 of the second cylindrical chamber 31.
  • the internal projections 53 prevent the ball 50 from falling out of the tube 48 when the container 23 is turned upside down.
  • An aperture 54 in the wall of the tube 48 allows the liquid to enter when the latter is sucked up with the container 23 in an upturned position and the ball 50 is resting on the projections 53.
  • the pressure of the compressed air in the second chamber 31 is in fact sufficient to cause the edge of the aperture 41 around the tube 21 to flex and cause an annular passage to form, this passage not normally being present on account of the fact that the said edge adheres elastically around the external surface of the tube 21.
  • the pressurized air introduced into the container 23 compensates for the drop in pressure that takes place inside the container following repeated sucking up of the liquid and prevents the said container from caving in, even though it has very thin walls.
  • the liquid 24, which has been sucked up into the first cylindrical chamber 2, is sprayed as a result of the axial movement of the extension 19 of the piston 17 inside the said cylindrical chamber 2, while the flap valve 27 is held closed by the pressure prevailing inside the chamber.
  • the liquid 24 which is pressurized in the chamber 2 also enters the passages 15 and 16 formed within the thickness of the top wall 4, and passes out of the said top wall.
  • the pressurized liquid which has passed behind the wall 4 generates an axial thrust which overcomes that of the spring 35, axially displacing the body 1 in an opposite direction to that of the piston 17.
  • This displacement causes the zone 55 behind the wall 4 to connect up with the dispensing tube 10 and therefore, via the passages 15 and 16, also causes the said dispensing tube 10 to connect up hydraulically with the cylindrical chamber 2.

Landscapes

  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Closures For Containers (AREA)
EP97830153A 1997-03-28 1997-03-28 Pulvérisateur manuel avec un évent étanche aux liquides Withdrawn EP0867229A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP97830153A EP0867229A1 (fr) 1997-03-28 1997-03-28 Pulvérisateur manuel avec un évent étanche aux liquides

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP97830153A EP0867229A1 (fr) 1997-03-28 1997-03-28 Pulvérisateur manuel avec un évent étanche aux liquides

Publications (1)

Publication Number Publication Date
EP0867229A1 true EP0867229A1 (fr) 1998-09-30

Family

ID=8230605

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97830153A Withdrawn EP0867229A1 (fr) 1997-03-28 1997-03-28 Pulvérisateur manuel avec un évent étanche aux liquides

Country Status (1)

Country Link
EP (1) EP0867229A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2233213A4 (fr) * 2007-12-14 2017-03-22 Canyon Co., Ltd. Distributeur à accumulation de pression
CN112004755A (zh) * 2018-05-31 2020-11-27 株式会社吉野工业所 扳机式液体喷出器
CN112244584A (zh) * 2020-10-21 2021-01-22 江西天晟金属设备有限公司 一种便于多功能装饰存放架
CN112461375A (zh) * 2020-11-14 2021-03-09 向绪华 一种物联网数据采集手持终端

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2075992A1 (fr) * 1970-01-08 1971-10-15 Diamond Int Corp
US4161288A (en) * 1976-10-05 1979-07-17 Creative Dispensing Systems, Inc. Fluid dispenser method and apparatus
GB2141186A (en) * 1983-06-08 1984-12-12 Douglas Frank Corsette Manually actuated pump having pliant piston
FR2593243A1 (fr) * 1986-01-17 1987-07-24 Aerosol Inventions Dev Pompe a commande manuelle utilisable en toutes positions
EP0391292A1 (fr) * 1989-04-03 1990-10-10 Jiri Dipl.-Ing. Hodek Pompe de pulvérisation à double effet
WO1991003321A1 (fr) * 1989-08-29 1991-03-21 Megaplast Dosiersysteme Gmbh & Co. Pompe de dosage

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2075992A1 (fr) * 1970-01-08 1971-10-15 Diamond Int Corp
US4161288A (en) * 1976-10-05 1979-07-17 Creative Dispensing Systems, Inc. Fluid dispenser method and apparatus
GB2141186A (en) * 1983-06-08 1984-12-12 Douglas Frank Corsette Manually actuated pump having pliant piston
FR2593243A1 (fr) * 1986-01-17 1987-07-24 Aerosol Inventions Dev Pompe a commande manuelle utilisable en toutes positions
EP0391292A1 (fr) * 1989-04-03 1990-10-10 Jiri Dipl.-Ing. Hodek Pompe de pulvérisation à double effet
WO1991003321A1 (fr) * 1989-08-29 1991-03-21 Megaplast Dosiersysteme Gmbh & Co. Pompe de dosage

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2233213A4 (fr) * 2007-12-14 2017-03-22 Canyon Co., Ltd. Distributeur à accumulation de pression
CN112004755A (zh) * 2018-05-31 2020-11-27 株式会社吉野工业所 扳机式液体喷出器
US11389813B2 (en) 2018-05-31 2022-07-19 Yoshino Kogyosho Co., Ltd. Trigger type liquid ejector
CN112244584A (zh) * 2020-10-21 2021-01-22 江西天晟金属设备有限公司 一种便于多功能装饰存放架
CN112244584B (zh) * 2020-10-21 2022-06-10 江西天晟金属设备有限公司 一种便于多功能装饰存放架
CN112461375A (zh) * 2020-11-14 2021-03-09 向绪华 一种物联网数据采集手持终端

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