EP0713009A2 - Membranpumpe - Google Patents

Membranpumpe Download PDF

Info

Publication number
EP0713009A2
EP0713009A2 EP95308267A EP95308267A EP0713009A2 EP 0713009 A2 EP0713009 A2 EP 0713009A2 EP 95308267 A EP95308267 A EP 95308267A EP 95308267 A EP95308267 A EP 95308267A EP 0713009 A2 EP0713009 A2 EP 0713009A2
Authority
EP
European Patent Office
Prior art keywords
outlet
inlet
diaphragm
chamber
aperture
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
EP95308267A
Other languages
English (en)
French (fr)
Other versions
EP0713009A3 (de
EP0713009B1 (de
Inventor
Peter Clarke
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.)
Clarke Brendon
Clarke Carl
Clarke Cheryl
Clarke Edit
Clarke Rene
Original Assignee
Clarke Brendon
Clarke Carl
Clarke Cheryl
Clarke Edit
Clarke Rene
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 Clarke Brendon, Clarke Carl, Clarke Cheryl, Clarke Edit, Clarke Rene filed Critical Clarke Brendon
Publication of EP0713009A2 publication Critical patent/EP0713009A2/de
Publication of EP0713009A3 publication Critical patent/EP0713009A3/de
Application granted granted Critical
Publication of EP0713009B1 publication Critical patent/EP0713009B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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

Definitions

  • the present invention relates to a diaphragm pump.
  • the diaphragm pump of the present invention has particular, but not exclusive, application to the field of sewage pumping.
  • Sewage comprises a liquid medium carrying a large amount of solid material in suspension and often comprises pockets of gas such as methane or air.
  • the present invention has an object of providing a pump designed to allow it to purge itself of the gas pockets during normal operation.
  • the present invention provides a diaphragm pump comprising: a chamber opening at opposite end portions to provide an inlet and an outlet, and including an aperture defined in a surface of the chamber between the inlet and outlet; a flexible diaphragm having an inner region and an outer region, the outer region sealing against the surface of the chamber surrounding the aperture to close off the aperture, the chamber and the diaphragm thereby defining a passageway providing fluid communication between the inlet and outlet; a one-way inlet valve coupled to the inlet and a one-way outlet valve coupled to the outlet; the inner region of the diaphragm being reciprocatable within the chamber, whereby on reciprocation of the inner region fluid is drawn in via the inlet valve and expelled via the outlet valve, wherein the diaphragm is angled such that the plane of the diaphragm faces the outlet.
  • the outlet is preferably disposed at a greater height than the inlet.
  • the upper surface defining the passageway slopes upwardly from the horizontal from generally midway between the inlet and outlet to adjacent the outlet.
  • the upper surface defining the passageway includes the diaphragm and the surface of the chamber surrounding the aperture, and the plane of the diaphragm slopes upwardly more steeply than does the surface of the chamber surrounding the aperture.
  • the inlet and outlet are constructed to convey fluid therethrough in a generally horizontal direction.
  • the present invention provides a diaphragm pump mounted for use comprising: a chamber opening at opposite end portions to provide an inlet and an outlet, and including an aperture defined in a surface of the chamber between the inlet and outlet, the inlet and outlet being constructed to convey fluid therethrough in a generally horizontal direction; a flexible diaphragm having an inner region and an outer region, the outer region sealing against the surface of the chamber surrounding the aperture to close off the aperture, the chamber and the diaphragm thereby defining a passageway providing fluid communication between the inlet and outlet; a one-way inlet valve coupled to the inlet and a one-way outlet valve coupled to the outlet; the inner region of the diaphragm being reciprocatable within the chamber, whereby on reciprocation of the inner region fluid is drawn in via the inlet valve and expelled via the outlet valve, wherein the outlet is disposed at a greater height than the inlet, and the upper surface defining the passageway slopes upwardly from the horizontal from generally midway between the inlet and outlet to adjacent
  • the present invention provides a diaphragm pump comprising a chamber opening at opposite end portions to provide an inlet and an outlet, and including an aperture defined in a surface of the chamber between the inlet and outlet, the central axes of the inlet and outlet being arranged to be parallel to and offset from one another; a flexible diaphragm having an inner region and an outer region, the outer region sealing against the surface of the chamber surrounding the aperture to close off the aperture, the chamber and the diaphragm thereby defining a passageway providing fluid communication between the inlet and outlet; a one-way inlet valve coupled to the inlet and a one-way outlet valve coupled to the outlet; the inner region of the diaphragm being reciprocatable within the chamber, whereby on reciprocation of the inner region fluid is drawn in via the inlet valve and expelled via the outlet valve.
  • Figure 1 shows a cross-sectional view of a diaphragm pump in accordance with the present invention.
  • a diaphragm pump suitable for pumping sewage Is generally designated 10 and comprises a chamber 12 in the form of an elongate hollow body having openings at opposite ends, which is mounted for use on a support structure 1 by legs 13.
  • the opening at the left-hand end of the chamber serves as an inlet 14 and the one at the opposite, right-hand ends serves as an outlet 16.
  • the inlet and outlet 14, 16 are constructed to convey fluid therethrough in a direction indicated by arrows F. It will be noted that the pump is constructed and its mounting arranged such that the arrows F extend horizontally and that the outlet 16 is at a greater height than the inlet 14.
  • connection flanges 18 are right-angled flanges in that they occupy a plane at right-angles to the arrows F and serve as the means by which an inlet valve assembly 24, including a one-way inlet valve 25, and an outlet valve assembly 26, including a one-way outlet valve 27 are connected to the chamber 12.
  • the pump 10 also includes an aperture 30 in an upper surface of the chamber 12 between the inlet 14 and the outlet 16, and a flexible diaphragm 40.
  • the flexible diaphragm 40 includes an inner region 42 and an outer region 44, the latter sealing against the surface of the chamber surrounding the aperture 30, thereby closing-off the aperture 30.
  • the volume enclosed by the diaphragm 40 and the chamber 12 may be thought of as a fluid passageway 50 providing fluid communication between the inlet and outlet. From an inspection of Figure 1, it may be seen that the plane of the diaphragm 40, illustrated by the line X-X1, slopes upwardly from the horizontal by a small angle as does a portion 12a of the upper surface of the chamber neighbouring the outlet 16 by approximately the same angle.
  • the pump 10 also includes a driving means 100 which is operable to reciprocate the inner region 42 of the diaphragm to and fro within the chamber in a direction indicated by the arrow D (which is orthogonal to the line X-X1 ).
  • the driving means 100 reciprocates the inner region 44 of the diaphragm to and fro within the chamber 12.
  • the outlet valve 27 is closed and fluid is sucked into the passageway 50 via inlet valve 25.
  • the inlet valve 25 is closed and fluid is expelled from the outlet valve 27.
  • the differential height between the inlet 14 and outlet 16 and the upwardly sloping nature of the upper surface of the passageway 50 which in the described embodiment includes the diaphragm 40 and the upper surface portion 12a, promote the passage of the gas pocket to the outlet 16. Further, the angling of the diaphragm 40 relative to the horizontal such that it 'faces' the outlet ensures that a component of its motion during reciprocation takes place in the flow direction of fluid expelled from the outlet ( indicated by arrow F ). In this manner, the reciprocation of the diaphragm can propel the pockets of gas towards the outlet 16 and expel them therefrom.
  • the angling of the diaphragm 40 can be further accentuated such that there is a differential in slope between for example, the diaphragm 40 and the portion 12a, whereby the above-mentioned propulsion effect is exaggerated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
EP95308267A 1994-11-17 1995-11-17 Membranpumpe Expired - Lifetime EP0713009B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9423174 1994-11-17
GB9423174A GB9423174D0 (en) 1994-11-17 1994-11-17 Diaphragm pump

Publications (3)

Publication Number Publication Date
EP0713009A2 true EP0713009A2 (de) 1996-05-22
EP0713009A3 EP0713009A3 (de) 1998-02-11
EP0713009B1 EP0713009B1 (de) 2005-07-20

Family

ID=10764527

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95308267A Expired - Lifetime EP0713009B1 (de) 1994-11-17 1995-11-17 Membranpumpe

Country Status (4)

Country Link
EP (1) EP0713009B1 (de)
DE (1) DE69534315T2 (de)
ES (1) ES2245452T3 (de)
GB (1) GB9423174D0 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013184120A1 (en) * 2012-06-07 2013-12-12 Northern Tool + Equipment Company, Inc. Diaphragm pump and valve assembly
US9404484B2 (en) 2012-06-07 2016-08-02 Northern Tool & Equipment Company, Inc. Diaphragm pump and valve assembly with molded wobble plate
CN106662096A (zh) * 2014-06-16 2017-05-10 流量控制有限责任公司 利用鸭嘴阀、多方向端口和灵活的电连接的隔膜泵

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2351304A (en) * 1940-10-22 1944-06-13 Eisemann Corp Fluid transfer apparatus
FR1043464A (fr) * 1951-10-05 1953-11-09 F Devernois & Cie Ets Pompe à diaphragme
US2811929A (en) * 1953-07-17 1957-11-05 Gorman Rupp Co Diaphragm pump
FR1424503A (fr) * 1964-12-02 1966-01-14 Perfectionnements apportés aux pompes à diaphragme et ventouses extensibles
GB1123616A (en) * 1964-12-08 1968-08-14 Munster Simms Eng Ltd Improvements in or relating to diaphragm pumps

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"ALFA LAVAL. SINGLE DISC PUMPS.", ALFA LAVAL SINGLE DISC PUMPS, XX, XX, 1 January 1989 (1989-01-01), XX, pages COMPLETE 07., XP000783754
"BRITISCH STANDARD 8005", part 2 1987, BSI, article "Guide to Pumping Stations and Pumping Mains", pages: 3, XP000783755

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013184120A1 (en) * 2012-06-07 2013-12-12 Northern Tool + Equipment Company, Inc. Diaphragm pump and valve assembly
US9404484B2 (en) 2012-06-07 2016-08-02 Northern Tool & Equipment Company, Inc. Diaphragm pump and valve assembly with molded wobble plate
CN106662096A (zh) * 2014-06-16 2017-05-10 流量控制有限责任公司 利用鸭嘴阀、多方向端口和灵活的电连接的隔膜泵
CN106662096B (zh) * 2014-06-16 2019-07-19 流量控制有限责任公司 利用鸭嘴阀、多方向端口和灵活的电连接的隔膜泵
US11898548B2 (en) 2014-06-16 2024-02-13 Flow Control LLC Diaphragm pump utilizing duckbill valves, multi-directional ports and flexible electrical connectivity

Also Published As

Publication number Publication date
ES2245452T3 (es) 2006-01-01
EP0713009A3 (de) 1998-02-11
EP0713009B1 (de) 2005-07-20
GB9423174D0 (en) 1995-01-04
DE69534315D1 (de) 2005-08-25
DE69534315T2 (de) 2006-04-20

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