EP1134415A2 - Membraneinspannung mit Elastizitätsausgleich - Google Patents
Membraneinspannung mit Elastizitätsausgleich Download PDFInfo
- Publication number
- EP1134415A2 EP1134415A2 EP01105806A EP01105806A EP1134415A2 EP 1134415 A2 EP1134415 A2 EP 1134415A2 EP 01105806 A EP01105806 A EP 01105806A EP 01105806 A EP01105806 A EP 01105806A EP 1134415 A2 EP1134415 A2 EP 1134415A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- diaphragm
- membrane
- elastic component
- pump according
- diaphragm pump
- 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
Links
Images
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
- F04B43/06—Pumps having fluid drive
- F04B43/067—Pumps having fluid drive the fluid being actuated directly by a piston
-
- 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
- F04B43/0009—Special features
- F04B43/0054—Special features particularities of the flexible members
- F04B43/0063—Special features particularities of the flexible members bell-shaped flexible members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
- F05C2225/04—PTFE [PolyTetraFluorEthylene]
Definitions
- the invention relates to a diaphragm pump with a hydraulically driven membrane according to the preamble of claim 1.
- the membrane as the central Element fulfills the double function as a static seal and displacer in Form of an elastic pumping chamber wall.
- the static membrane seal is the Basis for the hermetic tightness of diaphragm pumps.
- the membrane also transfers the oscillating stroke movement of a drive to the one to be conveyed Fluid, which not only stimulates pulsation, but also interaction comes about with the fluid masses in the piping system.
- the oscillating movement becomes a Drive element via a hydraulic master, which comprises a hydraulic fluid, transferred to the membrane.
- the hydraulically driven membrane works always pressure balanced and only has to endure deflection stresses.
- PTFE polytetrafluoroethylene
- Usual membrane constructions are pure PTFE membranes with a rotationally symmetrical shaft contour or flat contour and PTFE as a protective layer on elastomer membranes.
- the limit for the use of PTFE as a membrane for membrane pumps is currently at a delivery pressure of 350 bar and a temperature of 150 ° C
- the reasons for these limits are the insufficient cold flow resistance and sealing pressure of the PTFE in the membrane clamping.
- With constructive Measures e.g. thanks to a suitable groove structure, to counteract the cold flow within limits.
- the creasing prevents the flow of the Membrane material from the membrane clamping. This allows the yield point in the membrane clamping to values far above the yield stress lift out of the tensile test. This is the only way to achieve a secure seal to achieve at 350 bar.
- the invention is therefore based on the object of a diaphragm pump of the above.
- Art to make available which the above Disadvantages eliminated and even with higher ones Delivery pressures and higher operating temperature with long membrane life can be used.
- the negative effect of "breathing" the pump head counteracted in the area of the membrane clamping.
- the diaphragm pump according to the invention there is an additional clamping area at least one elastic component is provided, which is designed in such a way that there are reductions in the pressure force occurring in the operation of the diaphragm pump in the clamping area of the membrane between the pump cover and the Pump housing compensates elastically.
- This design has the advantage that the diaphragm pump is also suitable for high pressures, for example above 350 bar, and for higher temperatures, for example above 150 ° C, is suitable because deformations of Pump cover and pump housing, which lead to a decrease in the contact pressure lead in the clamping area, are effectively balanced. At the same time may become insufficient under certain operating conditions Cold flow resistance and sealing pressure of the membrane material are compensated.
- the arrangement according to the invention increases the elasticity of the Membrane in the clamping area, so that the minimum pressure required for tightness in the clamping area of the membrane, even if it is deformed in the clamping area involved components is retained. That provided according to the invention elastic component has no sealing function, but serves to compensate of fluctuations in the contact pressure in the clamping area of the membrane.
- the elastic reserves of a membrane package are increased in that the Diaphragm comprises two or more layers of material, at least one elastic Component is arranged between at least two layers.
- the elastic Component for example, as an elastic intermediate layer or as an elastic one Intermediate ring formed.
- the elastic component extends over the entire circumference the membrane.
- the elastic component can be arranged on one side or on both sides of the membrane his.
- the elastic component comprises a or several elastomer o-rings.
- the elastic component is used as a lip seal educated.
- the elastic component is an integral part for simple and quick assembly Part of the membrane.
- the membrane is expediently made of PTFE or PE or alternatively of one Elastomer with a protective layer made of PTFE.
- the diaphragm pump shown comprises a diaphragm 10, which separates a delivery chamber 12 from a hydraulic chamber 14.
- a piston 16 As a drive a piston 16 is provided, which is in operation around a constant piston center position oscillates.
- the piston 16 is exemplary in the position of the piston center position shown.
- the oscillating movement of the piston 16 is via a hydraulic fluid in the hydraulic chamber 14 transferred to the membrane 10, which has a corresponding oscillates around a central position.
- the hydraulic chamber 14 has a pressure-limiting one Pressure relief valve 26 and a sniffer valve Refill valve 28 connected to a hydraulic reservoir 30.
- Support surfaces 31, 33 are provided, which laterally a working space of the membrane 10 limit.
- 31 designates the hydraulic support surface and 33 the Support surface on the conveyor chamber side.
- the membrane 10 is between a pump cover 34 and a pump housing 36 is clamped in a predetermined radial clamping area 38 and is preferably supported by groove structures in the pump components 34, 36.
- an elastic element 40 in addition to the membrane 10 arranged, as can be seen by way of example from FIGS. 2 to 5. This elastic element 40 compensates for "breathing" in the clamping area 38 at all times and sets the pressure required for tightness. This means even at high Pressure and temperature loads, which are known about the permissible loads Diaphragm pumps go out, a sufficient surface pressure of the Membrane clamping 38 guaranteed.
- the membrane clamping 38 designed according to the invention thus comprises one Elasticity compensation, since in the clamping area 38 of the membrane 10 the elastic Component 40 is provided.
- the elastic component formed as a lip ring 40, the one side or, as shown in Fig. 2, on both sides the membrane 10 is arranged in the clamping area 38.
- the lip ring 40 is in one piece formed with the membrane 10 so that when the membrane 10 the elastic component 40 is automatically arranged in the clamping area 38 and is mounted.
- the elastic component is an elastomer O-ring 42 formed and around the entire circumference in the clamping area 38 arranged.
- the membrane 10 has two material layers 44, 46, between which a space 48 is formed, for example in fluid-conducting connection with a diaphragm rupture sensor, not shown stands.
- the elastic component is here as an intermediate ring or intermediate layer 50 formed and in the clamping area 38 between the material layers 44, 46 of the Membrane 10 arranged.
- the membrane 10 is, so to speak "floating" stored.
- the elastic reserve of the membrane package 44, 46 increased, and the required minimum pressure in the clamping remains intact even if component deformations occur.
- To the fluid-conducting connection between the space 48 and the diaphragm rupture sensor ensure the intermediate ring or the intermediate layer 50 as Fabric formed.
- the diaphragm rupture sensor registers the through the Membrane fracture in the space 48 entering liquid, which by the Tissue gaps penetrate through to the membrane rupture sensor.
- 32 denotes the center of the membrane 10, which at the same time is to be regarded as an axis of rotational symmetry.
- the elastic component can be used to achieve the desired elasticity compensation also in the form of at least one or more axially effective profile rings be trained.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
Description
- Fig. 1
- eine Membranpumpe im Schnitt,
- Fig. 2
- jeweils geschnitten im Detail eine erste Ausführungsform des erfindungsgemäßen elastischen Bauteils,
- Fig. 3
- eine zweite Ausführungsform des elastischen Bauteils,
- Fig. 4
- eine dritte Ausführungsform des elastischen Bauteils und
- Fig. 5
- eine vierte Ausführungsform des elastischen Bauteils.
Claims (12)
- Membranpumpe mit hydraulisch angetriebener Membran (10), die an einem umlaufenden Rand zwischen einem Pumpendeckel (34) und einem Pumpengehäuse (36) in einem vorbestimmten radialen Einspannbereich (38) und mit einer vorbestimmten Andruckkraft zwischen Pumpendeckel (34) und Pumpengehäuse (36) derart eingespannt ist, daß die Andruckkraft unterhalb der Fließgrenze des Membranwerkstoffes liegt,
dadurch gekennzeichnet, daß im Einspannbereich (38) zusätzlich wenigstens ein elastisches Bauteil (40; 42; 50) vorgesehen ist, welches derart ausgebildet ist, daß es im Betrieb der Membranpumpe auftretende Verringerungen der Andruckkraft im Einspannbereich (38) der Membran (10) zwischen dem Pumpendeckel (34) und dem Pumpengehäuse (36) elastisch ausgleicht. - Membranpumpe nach Anspruch 1, dadurch gekennzeichnet, daß die Membran (10) zwei oder mehr Werkstofflagen (44, 46) umfaßt und daß das elastische Bauteil (50) zwischen wenigstens zwei Lagen (44, 46) angeordnet ist.
- Membranpumpe nach Anspruch 2, dadurch gekennzeichnet, daß das elastische Bauteil als elastische Zwischenlage ausgebildet ist.
- Membranpumpe nach Anspruch 2, dadurch gekennzeichnet, daß das elastische Bauteil als elastischer Zwischenring (50) ausgebildet ist.
- Membranpumpe nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, daß das elastische Bauteil (50) als Gewebe ausgebildet ist.
- Membranpumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß sich das elastische Bauteil (40; 42; 50) in Umfangsrichtung über den gesamten Umfang der Membran (10) erstreckt.
- Membranpumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das elastische Bauteil (40; 42; 50) beidseitig der Membran (10) angeordnet ist.
- Membranpumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das elastische Bauteil ein oder mehrere Elastomer-O-Ringe (42) umfaßt.
- Membranpumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das elastische Bauteil als Lippendichtung (40) ausgebildet ist.
- Membranpumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das elastische Bauteil (42) als integrales Teil der Membran (10) ausgebildet ist.
- Membranpumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Membran (10) aus PTFE oder PE hergestellt ist.
- Membranpumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Membran (10) aus einem Elastomer mit einer Schutzschicht aus PTFE hergestellt ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10012904 | 2000-03-16 | ||
DE10012904A DE10012904B4 (de) | 2000-03-16 | 2000-03-16 | Membraneinspannung mit Elastizitätsausgleich |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1134415A2 true EP1134415A2 (de) | 2001-09-19 |
EP1134415A3 EP1134415A3 (de) | 2002-07-17 |
EP1134415B1 EP1134415B1 (de) | 2006-06-07 |
Family
ID=7635006
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01105806A Expired - Lifetime EP1134415B1 (de) | 2000-03-16 | 2001-03-08 | Membraneinspannung mit Elastizitätsausgleich |
Country Status (3)
Country | Link |
---|---|
US (1) | US6582206B2 (de) |
EP (1) | EP1134415B1 (de) |
DE (2) | DE10012904B4 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012054394A3 (en) * | 2010-10-22 | 2012-07-12 | Oshkosh Corporation | Pump for vehicle suspension system |
US10221055B2 (en) | 2016-04-08 | 2019-03-05 | Oshkosh Corporation | Leveling system for lift device |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002500099A (ja) * | 1998-01-09 | 2002-01-08 | エフエイスター、リミティド | 可動ヘッド、塗装装置、および方法 |
US6913234B2 (en) * | 2002-10-07 | 2005-07-05 | Sondra Weiss | Rod clamp |
US6899530B2 (en) * | 2002-10-31 | 2005-05-31 | Wanner Engineering, Inc. | Diaphragm pump with a transfer chamber vent with a longitudinal notch on the piston cylinder |
US7090474B2 (en) * | 2003-05-16 | 2006-08-15 | Wanner Engineering, Inc. | Diaphragm pump with overfill limiter |
US8454324B2 (en) * | 2004-03-18 | 2013-06-04 | Precision Dispensing Systems Limited | Pump |
NZ531822A (en) * | 2004-03-18 | 2007-08-31 | Prec Dispensing Systems Ltd | A membrane pump |
DE102009023012A1 (de) * | 2009-05-28 | 2010-12-16 | G.S. Anderson Gmbh | Membranventil-Membran |
GB0915327D0 (en) * | 2009-09-03 | 2009-10-07 | Quanta Fluid Solution Ltd | Pump |
US9850889B2 (en) * | 2010-02-02 | 2017-12-26 | Dajustco Ip Holdings Inc. | Hydraulic fluid control system for a diaphragm pump |
WO2013028729A1 (en) * | 2011-08-22 | 2013-02-28 | Cummins Emission Solutions Inc. | Urea solution pumps having leakage bypass |
GB201305755D0 (en) | 2013-03-28 | 2013-05-15 | Quanta Fluid Solutions Ltd | Re-Use of a Hemodialysis Cartridge |
GB201409796D0 (en) | 2014-06-02 | 2014-07-16 | Quanta Fluid Solutions Ltd | Method of heat sanitization of a haemodialysis water circuit using a calculated dose |
US9964106B2 (en) | 2014-11-04 | 2018-05-08 | Wanner Engineering, Inc. | Diaphragm pump with dual spring overfill limiter |
DK201570293A1 (en) * | 2015-05-19 | 2016-12-12 | Nel Hydrogen As | Diaphragm compressor with an oblong shaped chamber |
GB201523104D0 (en) | 2015-12-30 | 2016-02-10 | Quanta Fluid Solutions Ltd | Dialysis machine |
US10920763B2 (en) | 2016-09-01 | 2021-02-16 | Wanner Engineering, Inc. | Diaphragm with edge seal |
GB201622119D0 (en) | 2016-12-23 | 2017-02-08 | Quanta Dialysis Tech Ltd | Improved valve leak detection system |
JP7346445B2 (ja) | 2018-04-18 | 2023-09-19 | ワナー・エンジニアリング・インコーポレーテッド | ダイヤフラムポンプを圧力差から保護するためのデバイス |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1373780A (fr) * | 1963-08-19 | 1964-10-02 | Perfectionnements aux pompes à diaphragme | |
DE1503429A1 (de) * | 1963-04-26 | 1969-04-03 | Andreas Hofer Hochdruck Appbau | Dichtungsring fuer Hoechstdruck-Zusatzverdichter mit Membranbetaetigung |
DE2620228A1 (de) * | 1976-05-07 | 1977-11-10 | Bran & Luebbe | Kolbenmembranpumpe |
EP0320091A1 (de) * | 1987-11-13 | 1989-06-14 | Plf Acquisition Subsidiary Inc. | Vorrichtung und Verfahren zur Feststellung von Membranschäden in Verdrängerpumpen |
DE4143371A1 (de) * | 1991-11-08 | 1993-05-13 | Almatec Tech Innovationen Gmbh | Membran fuer eine membranpumpe |
US5860793A (en) * | 1995-12-01 | 1999-01-19 | Pulsafeeder, Inc. | Diaphragm metering pump with push to prime air bleeder valve |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
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US2242582A (en) * | 1938-09-29 | 1941-05-20 | Leo L Williams | Fuel pump |
US4275997A (en) * | 1979-08-09 | 1981-06-30 | Parker-Hannifin Corporation | Hydraulic pump with proportional pressure controller |
EP0055467B1 (de) * | 1980-12-29 | 1984-12-05 | LEWA Herbert Ott GmbH + Co. | Membranpumpe mit druckentlastet eingespannter Membran |
US4791805A (en) * | 1985-06-07 | 1988-12-20 | Expertek, Inc. | Fuel tank leak detection apparatus |
ES2013712B3 (es) * | 1985-11-20 | 1990-06-01 | Schweizerische Viscose | Metodo de produccion de un hilo en tren de poliester - poy |
US4741360A (en) * | 1987-09-14 | 1988-05-03 | Tom Mcguane Industries, Inc. | Fuel pressure regulator |
US5062770A (en) * | 1989-08-11 | 1991-11-05 | Systems Chemistry, Inc. | Fluid pumping apparatus and system with leak detection and containment |
DE4018464A1 (de) * | 1990-06-08 | 1991-12-12 | Ott Kg Lewa | Membran fuer eine hydraulisch angetriebene membranpumpe |
US5217797A (en) * | 1992-02-19 | 1993-06-08 | W. L. Gore & Associates, Inc. | Chemically resistant diaphragm |
US5279504A (en) * | 1992-11-02 | 1994-01-18 | Williams James F | Multi-diaphragm metering pump |
JPH074359A (ja) * | 1993-05-06 | 1995-01-10 | Almatec Technische Innovationen Gmbh | ポンプ用ダイヤフラム |
US5560279A (en) * | 1995-03-16 | 1996-10-01 | W. L. Gore & Associates, Inc. | Pre-failure sensing diaphragm |
US6173959B1 (en) * | 1996-02-14 | 2001-01-16 | Mikuni Adec Corporation | Diaphragm-holding synthetic resin assembly |
JP3083275B2 (ja) * | 1997-09-18 | 2000-09-04 | 株式会社ワイ・テイ・エス | ダブルダイヤフラム式ポンプ |
-
2000
- 2000-03-16 DE DE10012904A patent/DE10012904B4/de not_active Expired - Fee Related
-
2001
- 2001-03-08 DE DE50109995T patent/DE50109995D1/de not_active Expired - Fee Related
- 2001-03-08 EP EP01105806A patent/EP1134415B1/de not_active Expired - Lifetime
- 2001-03-15 US US09/808,108 patent/US6582206B2/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1503429A1 (de) * | 1963-04-26 | 1969-04-03 | Andreas Hofer Hochdruck Appbau | Dichtungsring fuer Hoechstdruck-Zusatzverdichter mit Membranbetaetigung |
FR1373780A (fr) * | 1963-08-19 | 1964-10-02 | Perfectionnements aux pompes à diaphragme | |
DE2620228A1 (de) * | 1976-05-07 | 1977-11-10 | Bran & Luebbe | Kolbenmembranpumpe |
EP0320091A1 (de) * | 1987-11-13 | 1989-06-14 | Plf Acquisition Subsidiary Inc. | Vorrichtung und Verfahren zur Feststellung von Membranschäden in Verdrängerpumpen |
DE4143371A1 (de) * | 1991-11-08 | 1993-05-13 | Almatec Tech Innovationen Gmbh | Membran fuer eine membranpumpe |
US5860793A (en) * | 1995-12-01 | 1999-01-19 | Pulsafeeder, Inc. | Diaphragm metering pump with push to prime air bleeder valve |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012054394A3 (en) * | 2010-10-22 | 2012-07-12 | Oshkosh Corporation | Pump for vehicle suspension system |
US8596648B2 (en) | 2010-10-22 | 2013-12-03 | Oshkosh Corporation | Pump for vehicle suspension system |
US8821130B2 (en) | 2010-10-22 | 2014-09-02 | Oshkosh Corporation | Pump for vehicle suspension system |
US9581153B2 (en) | 2010-10-22 | 2017-02-28 | Oshkosh Corporation | Pump for vehicle suspension system |
US10221055B2 (en) | 2016-04-08 | 2019-03-05 | Oshkosh Corporation | Leveling system for lift device |
US10934145B2 (en) | 2016-04-08 | 2021-03-02 | Oshkosh Corporation | Leveling system for lift device |
US11565920B2 (en) | 2016-04-08 | 2023-01-31 | Oshkosh Corporation | Leveling system for lift device |
US11679967B2 (en) | 2016-04-08 | 2023-06-20 | Oshkosh Corporation | Leveling system for lift device |
Also Published As
Publication number | Publication date |
---|---|
US6582206B2 (en) | 2003-06-24 |
EP1134415A3 (de) | 2002-07-17 |
US20010043872A1 (en) | 2001-11-22 |
DE10012904B4 (de) | 2004-08-12 |
DE50109995D1 (de) | 2006-07-20 |
EP1134415B1 (de) | 2006-06-07 |
DE10012904A1 (de) | 2001-10-04 |
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