CA2485237A1 - Liquid jet pump - Google Patents

Liquid jet pump Download PDF

Info

Publication number
CA2485237A1
CA2485237A1 CA002485237A CA2485237A CA2485237A1 CA 2485237 A1 CA2485237 A1 CA 2485237A1 CA 002485237 A CA002485237 A CA 002485237A CA 2485237 A CA2485237 A CA 2485237A CA 2485237 A1 CA2485237 A1 CA 2485237A1
Authority
CA
Canada
Prior art keywords
valve member
stem
liquid
jetting pump
liquid jetting
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
CA002485237A
Other languages
French (fr)
Other versions
CA2485237C (en
Inventor
Shinji Shimada
Katsuhito Kuwahara
Takao Kishi
Takayuki Abe
Shuzo Endo
Yuji Kohara
Takamitsu Nozawa
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.)
Yoshino Kogyosho Co Ltd
Original Assignee
Individual
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
Priority claimed from JP7031358A external-priority patent/JPH08198303A/en
Priority claimed from JP7031359A external-priority patent/JPH08198302A/en
Priority claimed from JP09810995A external-priority patent/JP3569343B2/en
Application filed by Individual filed Critical Individual
Publication of CA2485237A1 publication Critical patent/CA2485237A1/en
Application granted granted Critical
Publication of CA2485237C publication Critical patent/CA2485237C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
    • 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
    • B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
    • B05B11/0064—Lift valves
    • 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
    • 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
    • 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
    • B05B11/1038—Pressure accumulation pumps, i.e. pumps comprising a pressure accumulation chamber
    • B05B11/1039—Pressure accumulation pumps, i.e. pumps comprising a pressure accumulation chamber the outlet valve being mechanically opened after a defined accumulation 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
    • B05B11/1042—Components or details
    • B05B11/1059—Means for locking a pump or its actuation means in a fixed position
    • B05B11/106—Means for locking a pump or its actuation means in a fixed position in a retracted position, e.g. in an end-of-dispensing-stroke 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
    • B05B11/01—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
    • B05B11/1066—Pump inlet valves
    • B05B11/1067—Pump inlet valves actuated by pressure
    • 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
    • B05B11/1073—Springs
    • B05B11/1077—Springs characterised by a particular shape or material
    • 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
    • B05B11/1097—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 with means for sucking back the liquid or other fluent material in the nozzle after a dispensing stroke

Abstract

A liquid jetting pump of the present invention is constructed such that an intra container liquid is sucked into a cylinder 3 through a suction valve 9 by moving a vertically movable member 4 up and down, and the intra cylinder liquid is jetted out of a nozzle 29 through a discharge valve 31 from a stem 28. A plurality of ribs 10 are protruded in a peripheral direction from a lower edge part within the cylinder. Engagement recessed portions 11 are formed in inner parts of the upper surfaces of the ribs. A lower edge of a coil spring 38 for biasing the vertically movable member 4 is secured to each of the engagement recessed portions 11, thereby permitting a flow of liquid on both sides of the lower edge of the spring internally externally.

Claims (18)

1. A liquid jetting pump comprising:
a mounting cap fitted to a container neck portion;
a cylinder fixed to a container through said cap and including a suction valve provided in a lower edge part extending downward into said container, said suction valve including a valve member always biased in a valve hole closing direction by a resilient member, a bar-like protrusion protruding above a top outer wall of the fixed cylinder;
a stem which has an annular piston fitted to an interior of said cylinder, and protruding from a lower part of an outer periphery so as to be vertically movable in an upward-biased state;
a push-down head, with a nozzle, disposed in continuation from an upper edge of said stem and vertically movable above said mounting cap; and a discharge valve provided with a valve member, for closing a valve hole formed in an inner upper part of said stem and being vertically movable by a liquid pressure, a vertical liquid passageway being defined in the stem between the nozzle anal the valve hole, a liquid within said container being sucked into said cylinder through said suction valve, and a liquid within said cylinder being jetted out of said nozzle through said discharge valve from said stem by vertically moving a vertically movable member constructed of said stem and said push-down head.
2. The liquid jetting pump of claim 1, wherein a vertical stroke of said discharge valve member is regulated so that Vb-Vc is equal to or larger than Va, wherein Va is the volumetric capacity of said nozzle, Vb is the volumetric capacity of the liquid passageway where said discharge valve member is vertically movable, and Vc is the volume of said discharge valve member.
3. The liquid jetting pump of claim 1, wherein said suction valve member is a ball-like suction valve member.
4. The liquid jetting pump of claim 3, further comprising a coil spring provided between the fixed cylinder and the ball-like suction valve member, the coil spring serving as the resilient member biasing the valve member in a valve hole closing direction.
5. The liquid jetting pump of claim 4, wherein a lower end of the coil spring is press-fitted onto an upper surface of the ball-like suction valve member.
6. The liquid jetting pump of claim 4, wherein an upper end of the coil spring is secured to an outer periphery of a bar-like protrusion protruding below the fixed cylinder.
7. The liquid jetting pump of claim 1, wherein when the stem is pushed down, an inner peripheral surface of the stem is lightly fitted to the outside periphery of the bar-like protrusion.
8. The liquid jetting pump of claim 1, wherein the nozzle has a proximal end portion that extends obliquely upward to a tip that descends obliquely.
9. The liquid jetting pump of claim 1, wherein a vertical stroke of the discharge valve member is at least 10 mm.
10. A liquid jetting pump comprising:
a mounting cap fitted to a container neck portion;
a cylinder fixed to a container through said cap and including a suction valve provided in a lower edge part extending downward into said container, said suction valve including a valve member always biased in a valve hole closing direction by a resilient member;
a stem which has an annular piston fitted to an interior of said cylinder, and protruding from a lower part of an outer periphery so as to be vertically movable in an upward-biased state;
a push-down head, with a nozzle, disposed in continuation from an upper edge of said stem and vertically movable above said mounting cap; and a discharge valve provided with a valve member, for closing a valve hole formed in an inner upper part of said stem and being vertically movable by a liquid pressure, a vertical liquid passageway being defined in the stem between the nozzle and the valve hole, a liquid within said container being sucked into said cylinder through said suction valve, and a liquid within said cylinder being jetted out of said nozzle through said discharge valve from said stem by vertically moving a vertically movable member constructed of said stem and said push-down head, wherein a vertical stroke of said discharge valve member is regulated so that Vb-Vc is equal to or larger than Va, wherein Va is the volumetric capacity of said nozzle, Vb is the volumetric capacity of the liquid passageway where said discharge valve member is vertically movable, and Vc is the volume of said discharge valve member.
11. The liquid jetting pump of claim 10, wherein said valve member is a ball-like suction valve member.
12. The liquid jetting pump of claim 11, further comprising a coil spring provided between the fixed cylinder and the ball-like suction valve member, the coil spring serving as the resilient member biasing the valve member in a valve hole closing direction.
13. The liquid jetting pump of claim 12, wherein a lower end of the coil spring is press-fitted onto an upper surface of the ball-like suction valve member.
14. The liquid jetting pump of claim 12, wherein an upper end of the coil spring is secured to an outer periphery of a bar-like protrusion protruding below the fixed cylinder.
15. The liquid jetting pump of claim 10, wherein a bar-like protrusion protrudes above a top outer wall of the fixed cylinder.
16. The liquid jetting pump of claim 15, wherein when the stem is pushed down, an inner peripheral surface of the stem is lightly fitted to the outside periphery of the bar-like protrusion.
17. The liquid jetting pump of claim 16, wherein the nozzle has a proximal end portion that extends obliquely upward to a tip that descends obliquely.
18. The liquid jetting pump of claim 10, wherein a vertical stroke of the discharge valve member is at least 10 mm.
CA2485237A 1995-01-27 1996-01-26 Liquid jet pump Expired - Lifetime CA2485237C (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
JP7031358A JPH08198303A (en) 1995-01-27 1995-01-27 Liquid spray pump
JP7031359A JPH08198302A (en) 1995-01-27 1995-01-27 Liquid spray pump
JP7-31359 1995-01-27
JP7-31358 1995-01-27
JP7-98109 1995-03-29
JP09810995A JP3569343B2 (en) 1995-03-29 1995-03-29 Liquid ejection pump
CA2440737A CA2440737C (en) 1995-01-27 1996-01-26 Liquid jet pump

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA2440737A Division CA2440737C (en) 1995-01-27 1996-01-26 Liquid jet pump

Publications (2)

Publication Number Publication Date
CA2485237A1 true CA2485237A1 (en) 1996-08-01
CA2485237C CA2485237C (en) 2011-03-15

Family

ID=27287295

Family Applications (5)

Application Number Title Priority Date Filing Date
CA002426367A Expired - Lifetime CA2426367C (en) 1995-01-27 1996-01-26 Liquid jet pump
CA2665953A Expired - Lifetime CA2665953C (en) 1995-01-27 1996-01-26 Liquid jet pump
CA2440737A Expired - Lifetime CA2440737C (en) 1995-01-27 1996-01-26 Liquid jet pump
CA002186614A Expired - Lifetime CA2186614C (en) 1995-01-27 1996-01-26 Liquid jet pump
CA2485237A Expired - Lifetime CA2485237C (en) 1995-01-27 1996-01-26 Liquid jet pump

Family Applications Before (4)

Application Number Title Priority Date Filing Date
CA002426367A Expired - Lifetime CA2426367C (en) 1995-01-27 1996-01-26 Liquid jet pump
CA2665953A Expired - Lifetime CA2665953C (en) 1995-01-27 1996-01-26 Liquid jet pump
CA2440737A Expired - Lifetime CA2440737C (en) 1995-01-27 1996-01-26 Liquid jet pump
CA002186614A Expired - Lifetime CA2186614C (en) 1995-01-27 1996-01-26 Liquid jet pump

Country Status (8)

Country Link
US (5) US5924604A (en)
EP (4) EP1210983B1 (en)
KR (1) KR100311593B1 (en)
CN (4) CN1098200C (en)
AU (1) AU717120B2 (en)
CA (5) CA2426367C (en)
DE (4) DE69631269T2 (en)
WO (1) WO1996022924A1 (en)

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DE69638012D1 (en) 2009-10-08
AU4496596A (en) 1996-08-14
CN100375657C (en) 2008-03-19
EP1543886B1 (en) 2009-08-26
DE69635938D1 (en) 2006-05-11
EP1579923A2 (en) 2005-09-28
CA2186614C (en) 2003-12-30
CA2440737A1 (en) 1996-08-01
CA2426367A1 (en) 1996-08-01
EP0757004B1 (en) 2004-01-07
EP1543886A2 (en) 2005-06-22
CA2665953A1 (en) 1996-08-01
DE69635938T2 (en) 2006-08-24
CA2665953C (en) 2012-05-01
CA2186614A1 (en) 1996-08-01
EP1210983B1 (en) 2006-03-22
US20020056731A1 (en) 2002-05-16
EP0757004A4 (en) 1999-08-11
CN1378882A (en) 2002-11-13
DE69631269D1 (en) 2004-02-12
US20040144806A1 (en) 2004-07-29
US6938803B2 (en) 2005-09-06
EP1210983A3 (en) 2002-09-04
AU717120B2 (en) 2000-03-16
CA2440737C (en) 2010-08-24
DE69631269T2 (en) 2004-12-09
CN1378883A (en) 2002-11-13
US6702156B2 (en) 2004-03-09
EP1543886A3 (en) 2007-03-14
EP1579923A3 (en) 2005-10-12
US7472809B2 (en) 2009-01-06
CN1098200C (en) 2003-01-08
CA2426367C (en) 2005-01-25
CN1145609A (en) 1997-03-19
US5924604A (en) 1999-07-20
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US20050167451A1 (en) 2005-08-04
CA2485237C (en) 2011-03-15
US6119902A (en) 2000-09-19
CN100402157C (en) 2008-07-16
EP1210983A2 (en) 2002-06-05
CN1232356C (en) 2005-12-21
KR100311593B1 (en) 2002-12-05
WO1996022924A1 (en) 1996-08-01
DE69637311T2 (en) 2008-08-07
EP0757004A1 (en) 1997-02-05
CN1666823A (en) 2005-09-14

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