EP0801228A3 - Double diaphragm pump - Google Patents

Double diaphragm pump Download PDF

Info

Publication number
EP0801228A3
EP0801228A3 EP97302476A EP97302476A EP0801228A3 EP 0801228 A3 EP0801228 A3 EP 0801228A3 EP 97302476 A EP97302476 A EP 97302476A EP 97302476 A EP97302476 A EP 97302476A EP 0801228 A3 EP0801228 A3 EP 0801228A3
Authority
EP
European Patent Office
Prior art keywords
pump
fluid
valve
guide members
air
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
EP97302476A
Other languages
German (de)
French (fr)
Other versions
EP0801228A2 (en
EP0801228B1 (en
EP0801228B9 (en
Inventor
Kent P. Hand
Joel T. Fisher
Ann C. Feitel
Harold D. Johnson
Graig D. Burt
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.)
Graco Inc
Original Assignee
Graco Inc
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 US08/837,237 external-priority patent/US5860794A/en
Application filed by Graco Inc filed Critical Graco Inc
Priority to EP99201777A priority Critical patent/EP0942171B1/en
Publication of EP0801228A2 publication Critical patent/EP0801228A2/en
Publication of EP0801228A3 publication Critical patent/EP0801228A3/en
Publication of EP0801228B1 publication Critical patent/EP0801228B1/en
Application granted granted Critical
Publication of EP0801228B9 publication Critical patent/EP0801228B9/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
    • F04B45/04—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms
    • F04B45/041—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms double acting plate-like flexible pumping member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0027—Pulsation and noise damping means
    • F04B39/0055—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes
    • F04B39/0061—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes using muffler volumes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/10—Adaptations or arrangements of distribution members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • F04B43/06—Pumps having fluid drive
    • F04B43/073—Pumps having fluid drive the actuating fluid being controlled by at least one valve
    • F04B43/0736—Pumps having fluid drive the actuating fluid being controlled by at least one valve with two or more pumping chambers in parallel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/22—Arrangements for enabling ready assembly or disassembly
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
    • F04B9/12—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air
    • F04B9/129—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air having plural pumping chambers
    • F04B9/131—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air having plural pumping chambers with two mechanically connected pumping members
    • F04B9/135—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air having plural pumping chambers with two mechanically connected pumping members reciprocating movement of the pumping members being obtained by two single-acting elastic-fluid motors, each acting in one direction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2210/00—Working fluid
    • F05B2210/10—Kind or type
    • F05B2210/12—Kind or type gaseous, i.e. compressible
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Check Valves (AREA)
  • Electromagnetic Pumps, Or The Like (AREA)

Abstract

An air operated double diaphragm pump 10 is provided with an air valve assembly which allows the valve cup 38 to move in a rectangular pattern which greatly reduces the cost and number of parts required for such an air valve. The main housing 12 of the pump 10 is mounted on a fluid base 20 to which the lines of fluid are attached. This allows removal of the pump for servicing by undoing several basic fasteners such as nuts and bolts 18 without requiring removal of the fluid fittings to the base 20. Thus, in the event of a pump malfunction, the pump may be easily replaced while the fluid fittings remain intact. Provision is also made for additional passages 54, 56 into each air chamber 44, 46 for operation via an externally operated solenoid valve. A one-piece check valve 26 construction is utilised with the part having a central sealing disk 26A having a plurality of radially axially extending guide members 26B extending therefrom wherein each of the guide members has an outer diameter sized to slidingly fit within a cylindrical cavity 28 and each of the guide members 26B having axially opposite the sealing disk 26A a plurality of spring loaded fingers 26D which serve to bias the check valve 26 into a closed position.
EP97302476A 1996-04-12 1997-04-11 Double diaphragm pump Expired - Lifetime EP0801228B9 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP99201777A EP0942171B1 (en) 1996-04-12 1997-04-11 Double diaphragm pump

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US1565096P 1996-04-12 1996-04-12
US15650 1996-04-12
US08/837,237 US5860794A (en) 1997-04-10 1997-04-10 Double diaphragm pump with air valve block moving in a rectangular pattern
US837237 1997-04-10

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP99201777A Division EP0942171B1 (en) 1996-04-12 1997-04-11 Double diaphragm pump

Publications (4)

Publication Number Publication Date
EP0801228A2 EP0801228A2 (en) 1997-10-15
EP0801228A3 true EP0801228A3 (en) 1999-07-21
EP0801228B1 EP0801228B1 (en) 2003-07-02
EP0801228B9 EP0801228B9 (en) 2003-10-08

Family

ID=26687654

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97302476A Expired - Lifetime EP0801228B9 (en) 1996-04-12 1997-04-11 Double diaphragm pump

Country Status (6)

Country Link
EP (1) EP0801228B9 (en)
JP (2) JP4004097B2 (en)
KR (2) KR100491065B1 (en)
CN (2) CN1081747C (en)
AR (1) AR006617A1 (en)
DE (2) DE69723290T2 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2463822B (en) 2005-05-17 2010-06-09 Thomas Industries Inc Pump improvements
GB2478784B (en) * 2010-03-19 2017-01-25 Finishing Brands Holdings Inc Improvements in diaphragm pumps
CN105351180A (en) * 2015-11-03 2016-02-24 王庆昌 Double-outlet and double-inlet integral pneumatic diaphragm pump
CN106762575A (en) * 2016-12-30 2017-05-31 张家港科康智能科技有限公司 A kind of compactedness compressed gas membrane pump
US10823167B2 (en) * 2019-01-31 2020-11-03 Wilden Pump And Engineering Llc Pump assembly
CN110374846B (en) * 2019-07-13 2020-12-11 新沂市锡沂高新材料产业技术研究院有限公司 Alternate air distribution method of bidirectional pneumatic diaphragm pump
CN110529367B (en) * 2019-07-26 2020-12-15 宁波钱湖石油设备有限公司 Hydraulic end structure of high-pressure reciprocating diaphragm pump
DE102019132711A1 (en) 2019-12-02 2021-06-02 Fte Automotive Gmbh Liquid pump, in particular for supplying a transmission or a clutch in the drive train of a motor vehicle
EP4388196A1 (en) * 2021-08-17 2024-06-26 Koninklijke Philips N.V. Suspension system, compressor assembly and portable oxygen concentrator

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4385869A (en) * 1980-06-28 1983-05-31 Far East Engineering Co., Ltd. Reciprocation pump
US4597403A (en) * 1983-03-14 1986-07-01 Milburn Jr William W Nutation valving apparatus and method of operation
EP0609044A1 (en) * 1993-01-25 1994-08-03 The Aro Corporation An air valving mechanism, in combination with a double diaphragm pump subassembly
WO1996008130A2 (en) * 1994-08-08 1996-03-21 Huewel Ralf Hydraulic or pneumatic piston and/or diaphragm pump

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2748752A (en) * 1952-04-11 1956-06-05 Baghuis Ludovicus Hendrikus Automatically reversing valves
US4138089A (en) * 1977-08-09 1979-02-06 The United States Of America As Represented By The Secretary Of The Department Of Health, Education And Welfare Slide valve
US4854832A (en) * 1987-08-17 1989-08-08 The Aro Corporation Mechanical shift, pneumatic assist pilot valve for diaphragm pump
US5062770A (en) * 1989-08-11 1991-11-05 Systems Chemistry, Inc. Fluid pumping apparatus and system with leak detection and containment
DE4111463A1 (en) * 1991-04-09 1992-10-15 Festo Kg EXTERNAL THREAD AND INTERNAL THREAD, PREFERABLY FOR THE PRODUCTION OF FLUIDIC CONNECTIONS IN PNEUMATICS
US5240390A (en) * 1992-03-27 1993-08-31 Graco Inc. Air valve actuator for reciprocable machine
US5326234A (en) * 1993-02-17 1994-07-05 Versa-Matic Tool, Inc. Fluid driven pump
US5391060A (en) * 1993-05-14 1995-02-21 The Aro Corporation Air operated double diaphragm pump
US5368452A (en) * 1993-07-20 1994-11-29 Graco Inc. Double diaphragm pump having two-stage air valve actuator
CN2174578Y (en) * 1993-09-02 1994-08-17 淄博潜水电泵厂 Double bellows pump

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4385869A (en) * 1980-06-28 1983-05-31 Far East Engineering Co., Ltd. Reciprocation pump
US4597403A (en) * 1983-03-14 1986-07-01 Milburn Jr William W Nutation valving apparatus and method of operation
EP0609044A1 (en) * 1993-01-25 1994-08-03 The Aro Corporation An air valving mechanism, in combination with a double diaphragm pump subassembly
WO1996008130A2 (en) * 1994-08-08 1996-03-21 Huewel Ralf Hydraulic or pneumatic piston and/or diaphragm pump

Also Published As

Publication number Publication date
JP2007285301A (en) 2007-11-01
AR006617A1 (en) 1999-09-08
DE69723144T2 (en) 2004-04-29
CN1374455A (en) 2002-10-16
EP0801228A2 (en) 1997-10-15
KR19980076691A (en) 1998-11-16
CN1174293A (en) 1998-02-25
JPH1030570A (en) 1998-02-03
DE69723144D1 (en) 2003-08-07
CN1165699C (en) 2004-09-08
CN1081747C (en) 2002-03-27
EP0801228B1 (en) 2003-07-02
KR100491065B1 (en) 2005-08-12
DE69723290T2 (en) 2004-02-05
JP4004097B2 (en) 2007-11-07
EP0801228B9 (en) 2003-10-08
KR100461707B1 (en) 2004-12-16
DE69723290D1 (en) 2003-08-07

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