EP0942171A3 - Double diaphragm pump - Google Patents

Double diaphragm pump Download PDF

Info

Publication number
EP0942171A3
EP0942171A3 EP99201777A EP99201777A EP0942171A3 EP 0942171 A3 EP0942171 A3 EP 0942171A3 EP 99201777 A EP99201777 A EP 99201777A EP 99201777 A EP99201777 A EP 99201777A EP 0942171 A3 EP0942171 A3 EP 0942171A3
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
EP99201777A
Other languages
German (de)
French (fr)
Other versions
EP0942171B1 (en
EP0942171A2 (en
Inventor
Kent P. Hand
Ann C. Feitel
Joel T. Fisher
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 claimed from EP97302476A external-priority patent/EP0801228B9/en
Publication of EP0942171A2 publication Critical patent/EP0942171A2/en
Publication of EP0942171A3 publication Critical patent/EP0942171A3/en
Application granted granted Critical
Publication of EP0942171B1 publication Critical patent/EP0942171B1/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
    • 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
    • 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
    • F04B53/16—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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (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.
EP99201777A 1996-04-12 1997-04-11 Double diaphragm pump Expired - Lifetime EP0942171B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US1565096P 1996-04-12 1996-04-12
US15650P 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
EP97302476A EP0801228B9 (en) 1996-04-12 1997-04-11 Double diaphragm pump

Related Parent Applications (1)

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

Publications (3)

Publication Number Publication Date
EP0942171A2 EP0942171A2 (en) 1999-09-15
EP0942171A3 true EP0942171A3 (en) 2000-02-09
EP0942171B1 EP0942171B1 (en) 2003-07-02

Family

ID=27238604

Family Applications (1)

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

Country Status (1)

Country Link
EP (1) EP0942171B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MX2008015468A (en) * 2006-06-08 2009-02-12 Larry Alvin Schuetzle Reciprocating compressor or pump and a portable tool powering system including a reciprocating compressor.
US20100215519A1 (en) * 2009-02-25 2010-08-26 Idex Aodd, Inc. Air operated double diaphragm over center valve pump

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1173298B (en) * 1958-10-03 1964-07-02 Unilever Nv Self-opening and closing cap for compressible tubes
FR2372363A1 (en) * 1976-11-24 1978-06-23 Bosch Siemens Hausgeraete Washing machine water outlet pipe valve - prevents return flow of dirty water to wash tub
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
US4766930A (en) * 1987-06-03 1988-08-30 Itap S.P.A. Check valve with self-guided shutter in the valve body
GB2258519A (en) * 1991-08-03 1993-02-10 Bema Sports Company Limited Integral leaf spring valve stem
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

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1173298B (en) * 1958-10-03 1964-07-02 Unilever Nv Self-opening and closing cap for compressible tubes
FR2372363A1 (en) * 1976-11-24 1978-06-23 Bosch Siemens Hausgeraete Washing machine water outlet pipe valve - prevents return flow of dirty water to wash tub
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
US4766930A (en) * 1987-06-03 1988-08-30 Itap S.P.A. Check valve with self-guided shutter in the valve body
GB2258519A (en) * 1991-08-03 1993-02-10 Bema Sports Company Limited Integral leaf spring valve stem
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
EP0942171B1 (en) 2003-07-02
EP0942171A2 (en) 1999-09-15

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