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EP0713009B1 - Membranpumpe - Google Patents

Membranpumpe Download PDF

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Publication number
EP0713009B1
EP0713009B1 EP95308267A EP95308267A EP0713009B1 EP 0713009 B1 EP0713009 B1 EP 0713009B1 EP 95308267 A EP95308267 A EP 95308267A EP 95308267 A EP95308267 A EP 95308267A EP 0713009 B1 EP0713009 B1 EP 0713009B1
Authority
EP
European Patent Office
Prior art keywords
outlet
diaphragm
inlet
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.)
Expired - Lifetime
Application number
EP95308267A
Other languages
English (en)
French (fr)
Other versions
EP0713009A2 (de
EP0713009A3 (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.
  • US Patent 2351304 discloses a fluid transfer apparatus comprising a casing, a flexible diaphragm peripherally supported on said casing and co-operating therewith to form a pump chamber above said diaphragm, inlet and outlet passages in the top of said casing, valves located in the passages with the seat of the inlet valve inclined with respect to a horizontal plane, the portion of said inlet valve seat at highest elevation being adjacent said outlet valve with at least a portion of the latter being located above the portion of the inlet valve which is at highest elevation whereby indrawn relatively light fluid or gases that would otherwise tend to collect immediately below said inlet valve will pass to said outlet valve and escape therethrough, there being no intervening structure to interfere with such flow.
  • US 1834957 discloses an open discharge pump having a pump structure forming a water passageway and comprising a member the upper wall of which is horizontal and the lower wall of which has a portion parallel to the horizontal flow of water and another portion contiguous to the first inclining upwardly until it is in horizontal alignment with the upper wall, the latter portion together with the upper wall and the lateral walls of the member forming a horizontal outlet, said structure also comprising a spout member having an apertured base joined to the first member in proximity to the edges of said outlet, said spout member having upper and lower walls shaped so as to provide a substantially direct water passageway through the structure and to discharge the outflowing water substantially horizontally, and a discharge valve horizontally seated within said structure against the edges of said outlet and hinged longitudinally of the edge of the outlet formed by the upper wall to provide free passage for outflow of water and sedimentary material, the lower wall of said spout sloping upwardly for a predetermined distance to keep the valve submerged at all times and the inclined portion of
  • US Patent 3358610 discloses a diaphragm pump having a dished casing and one wall comprised by a flexible diaphragm clamped over a rim of the casing.
  • An extension on the casing off to one side of and spaced from the rim carries a pivotally mounted handle having a portion extending over and secured to the diaphragm.
  • the diaphragm can thus be easily removed to give unobstructed access to the interior of the pump.
  • the casing has inlet and outlet valves whose axes are disposed at a substantial angle to each other, and the diaphragm moves substantially along the bisector of that angle.
  • US Patent 2811929 discloses a diaphragm pump of the discharge and suction stroke type having a pump body having a wall partly defining a pumping chamber provided with a valved liquid inlet and a valved liquid outlet, and means to initiate and resiliently to increase the rate of flow of liquid out of said chamber.
  • 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 invention provides a diaphragm pump in accordance with claim 1 of the appended claims.
  • 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, righthand 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-X 1 , 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-X 1 ).
  • 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)

Claims (2)

  1. Membranpumpe (10), die zum Gebrauch montiert wird, umfassend:
    Eine Kammer (12), die sich an gegenüberliegenden Endabschnitten öffnet, um einen Einlaß (14) und einen Auslaß (16) bereitzustellen, und die eine Öffnung (30) umfasst, die in einer Oberfläche der Kammer (12) zwischen dem Einlaß (14) und dem Auslaß (16) gebildet ist, wobei der Einlaß (14) und der Auslaß (16) konstruiert sind, um ein Fluid in einer im wesentlichen horizontalen Richtung hindurch zu befördern, und der Auslaß (16) höher angeordnet ist als der Einlaß (14);
    eine flexible Membran (40) mit einem inneren Bereich (42) und einem äußeren Bereich (44), wobei der äußere Bereich (44) an der die Öffnung (30) umgebenden Oberfläche der Kammer (12) dichtend abschließt, um die Öffnung (30) zu verschließen, wodurch die Kammer (12) und die Membran (40) einen Durchgang (50) bilden, der eine Fluidverbindung zwischen dem Einlaß (14) und dem Auslaß (16) schafft;
    ein Einwege-Einlaßventil (25), das mit dem Einlaß (14) verbunden ist, und ein Einwege-Austaßventil (27), das mit dem Auslaß (16) verbunden ist;
    wobei der innere Bereich (42) der Membran (40) In der Kammer (12) hin- und herbewegbar ist, wobei während des wechselseltigen Hubs des inneren Bereichs (42) Fluid über das Einlaßventil (25) eingesaugt und über das Auslaßventil (27) ausgestoßen wird,
    dadurch gekennzeichnet, daß
    die Membran (40) winkelig angeordnet ist, so daß die Ebene der Membran (40) dem Auslaß (16) gegenüberliegt;
    die obere Fläche, die den Durchgang (50) bildet, im wesentlichen von der Mitte zwischen dem Einlaß (14) und dem Auslaß (16) bis nahe zum Auslaß (16) aus der Horizontalen nach oben geneigt ist; und
    die obere Fläche, die den Durchgang (50) bildet, die Membran (40) und die die Öffnung (30) umgebende Oberfläche (12a) der Kammer (12) umfasst, wobei die Ebene der Membran (40) steiler nach oben geneigt ist als die die Öffnung (30) umgebende Oberfläche (12a) der Kammer (12).
  2. Membranpumpe (10) nach Anspruch 1, dadurch gekennzeichnet, daß die Mittelachsen des Einlasses (14) und des Auslasses (16) parallel und horizontal versetzt zueinander angeordnet sind.
EP95308267A 1994-11-17 1995-11-17 Membranpumpe Expired - Lifetime EP0713009B1 (de)

Applications Claiming Priority (2)

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

Publications (3)

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

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9404484B2 (en) 2012-06-07 2016-08-02 Northern Tool & Equipment Company, Inc. Diaphragm pump and valve assembly with molded wobble plate
CN104379932B (zh) * 2012-06-07 2017-05-31 北方工具设备有限公司 具有改善的泵寿命和效率的隔膜泵
ES2873199T3 (es) 2014-06-16 2021-11-03 Flow Control LLC Bomba de diafragma que utiliza válvulas de pico de pato, puertos multi-direccionales y conectividad eléctrica flexible

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

Also Published As

Publication number Publication date
EP0713009A2 (de) 1996-05-22
GB9423174D0 (en) 1995-01-04
DE69534315D1 (de) 2005-08-25
ES2245452T3 (es) 2006-01-01
EP0713009A3 (de) 1998-02-11
DE69534315T2 (de) 2006-04-20

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