WO2009024619A1 - Pompe à double membrane à haute pression, et élément formant membrane pour une telle pompe - Google Patents

Pompe à double membrane à haute pression, et élément formant membrane pour une telle pompe Download PDF

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Publication number
WO2009024619A1
WO2009024619A1 PCT/EP2008/061052 EP2008061052W WO2009024619A1 WO 2009024619 A1 WO2009024619 A1 WO 2009024619A1 EP 2008061052 W EP2008061052 W EP 2008061052W WO 2009024619 A1 WO2009024619 A1 WO 2009024619A1
Authority
WO
WIPO (PCT)
Prior art keywords
membrane
diameter
diaphragm pump
pressure double
coupling rod
Prior art date
Application number
PCT/EP2008/061052
Other languages
German (de)
English (en)
Other versions
WO2009024619A4 (fr
Inventor
Herbert Timmer
Original Assignee
Timmer Pneumatik Gmbh
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 Timmer Pneumatik Gmbh filed Critical Timmer Pneumatik Gmbh
Priority to EP08803172A priority Critical patent/EP2179177A1/fr
Priority to DE202008017904U priority patent/DE202008017904U1/de
Priority to US12/674,453 priority patent/US20110229352A1/en
Publication of WO2009024619A1 publication Critical patent/WO2009024619A1/fr
Publication of WO2009024619A4 publication Critical patent/WO2009024619A4/fr

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
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/0009—Special features
    • F04B43/0054—Special features particularities of the flexible 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
    • 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
    • F04B9/133—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 a double-acting elastic-fluid motor

Definitions

  • the invention relates to a high-pressure double diaphragm pump with a central housing, two cylindrical pumping chambers, one in pumping reciprocating coupling rod with pump piston, two each one of the pumping chambers in a product and a compressed air chamber with varying volumes dividing membranes whose elastomeric membrane body is peripherally clamped , wherein in the central region of the membrane body, a rigid implant body is embedded, which is provided with a pin which is connected to one end of the coupling rod, and a pneumatic control unit for changing the pressurized air chambers with compressed air.
  • the invention also relates to a membrane element for such a double membrane pump.
  • a diaphragm pump of the aforementioned type in which, however, the invention is limited to the specific membrane, shows the DE 94 06 216 Ul.
  • a disc-shaped implant body is present, the diameter of which is relatively small compared to the total membrane diameter.
  • the object is to significantly increase the service life and the number of strokes that the membrane can perform without significantly reducing the pressure ratio of 1: 3 or higher.
  • a membrane element which are characterized in that pushed in the compressed air chambers each have a rigid support disk between the end of the coupling rod and the inside of the membrane on the pin whose diameter is between 50 % and 95% of the diameter of the working surface of the membrane is and whose periphery is shaped as a shoulder facing away from the membrane body rounded shoulder.
  • the support disc prevents excessive tilting of the membrane and thus excessive asymmetric deformation of the membrane surface.
  • the rounded shoulder of the support disc absorbs part of the excess NEN deformation of the membrane and supports it, without the efficiency of the pump is thus significantly reduced.
  • the compression ratio of such a membrane is therefore not limited.
  • the diameter of the support disk is between 70 and 85% of the diameter of the working surface of the membrane.
  • the support disk should not fill the entire work surface.
  • the diameter of the support disk should be larger than the diameter of the implant body.
  • the support disk is preferably not firmly connected to the membrane. Preferably, it is provided with a center hole whose diameter is greater than the diameter of the pin, so that a movement along the pin axis in the direction of the axis of movement of the coupling rod is allowed.
  • the shape of the shoulder also depends on the shape of the membrane.
  • the shoulder of the support disk extends from a flat central region and runs in cross-section outwards into a pitch circle.
  • the pitch circle is rounded so that - seen in cross section - a tangent to the inclined surface in its end point encloses an angle of 20 to 60 ° with the axis of movement of the coupling rod.
  • the membrane is convexly curved towards the air chamber, it is advantageous to insert the support disk into the concave region of the membrane curvature, so that the membrane outer ring region can nestle against the shoulder when pressure is applied.
  • a material for the support plate is metal, preferably stainless or nickel plated steel.
  • the support disk made of high-strength, fabric-reinforced plastic. It is essential that the support disk is much more rigid and inelastic than the material of the membrane outside of the implant body.
  • the support disk may have different shapes, in particular also be designed polygonal. Also, cutouts or material dilutions are possible.
  • the membrane facing outside of the support disk should be smooth to provide the largest possible contact surface.
  • Figure 1 shows a schematic representation of a section drawn high-pressure double diaphragm pump according to the invention
  • FIG. 2 shows a section through a membrane element of a double membrane pump according to FIG. 1;
  • Figure 3 in exploded view essential to the invention parts of the double diaphragm pump according to the invention.
  • the illustrated in Figure 1 high-pressure double diaphragm pump operates with compressed air, which is fed for example with 5 bar overpressure from a compressor and via a pneumatic control unit (not shown here) certain elements of the double diaphragm pump - as known per se - is fed.
  • the high-pressure double diaphragm pump has a central housing 3, in the center of which is a pump rod reciprocating coupling rod 4 with a pump piston 9.
  • the coupling rod 4 is sealed relative to the central housing 3.
  • the pump piston 9 is controlled directionally alternating and thereby acted upon alternately from both sides with compressed air.
  • the coupling rod 4 connects two symmetrically arranged membranes 5 and 6.
  • the membranes 5 and 6 each share a pumping chamber 7,8 with varying volume in a product chamber 11,12 and a compressed air chamber 1,2.
  • one diaphragm 5 is in a suction position and the other diaphragm 6 is in a pressure position.
  • the membrane body is made of an elastomer and is peripherally clamped, as shown in FIG. For this purpose, the membrane 5 on its periphery a thickened bead 10 on.
  • FIG. 2 shows a section through the membrane 5.
  • the elastomeric membrane body 15 forming the main part of the membrane consists for example of two layers 15.1 and 15.2, namely a main layer 15.1 made of a rubber material and a thinner relative to the main layer Protective layer 15.2, which consists of a PTFE plastic.
  • a rigid implant body 17 is embedded, which is provided with a threaded pin 18. This is connected to one end of the coupling rod 4.
  • the implant body 17 fills only a central region of the membrane body 15.
  • the implant body 17 has approximately a diameter which amounts to 10 to 20% of the diameter of the membrane body 15.
  • the support disk 20 has a diameter D, which according to embodiment is about 80% of the diameter of the working surface of the membrane 5, wherein this ratio is preferably variable between 50% and 90%. In any case, the diameter of the support disk 20 is smaller than the diameter of the working surface of the membrane.
  • the diameter of the support disk 20 is greater than the diameter of the disk-shaped surface of the implant body 17, that is, it is approximately 150% to 210% of the diameter of the implant body 17th
  • the support disk 20 is a closed structure provided with only a central opening. However, it should not be ruled out that the support disk 20 also has cutouts or material dilutions.
  • the support disk On its side facing the membrane 5, the support disk is smooth. In the present case, it is made either of stainless steel or of a steel material provided with a nickel-plated surface. It is circular in the embodiment. However, it should not be ruled out that it also has a polygon or star shape.
  • the support disk 20 has a periphery which faces away from the membrane body 15 has a rounded shoulder 21.
  • the support disk has a flat central region 23 which has the central opening 22.
  • the surface runs from the central region 23 toward the edge at the shoulder 21 into a partial circle or an arc segment.
  • the pitch circle or arc section does not terminate at right angles to the plane of the flat central area, but terminates in an oblique face, which - in transverse direction has a tangent T in its end point, which forms an angle of 20 to 60 ° with the axis of movement A of the coupling rod 4.
  • the support disk 20 can be inserted into the concave region of the membrane curvature so that the membrane outer ring region around the shoulder 21 of the support disk 20 when pressurized nestles.
  • the membrane body 15 is supported when a significant pressure is applied to it.
  • the outer region of the membrane body 15 is not deformed too much.
  • the membrane body of the loose lying on the threaded pin 18 support disc 20 dissolves, but the membrane 5 can take the form that is optimal under the prevailing pressure conditions.
  • the given in certain position rigidity of consisting of the membrane and the support plate 20 membrane element 100 prevents unnecessary flexing and compressive load in the Walk area W.
  • the membrane body 15 also dissipates less Walk heat in the Walk area, which e- also counteracts the material fatigue.
  • FIG. 3 shows an exploded view of the invention belonging to the essential parts.
  • the outer boundaries of the pumping chambers form the pump caps 31 and 32.
  • Arranged in the pumping chambers are the membranes 5, 6, which are provided with the support disk 20 placed on top.
  • the central housing 3 of the pump is equipped with the pump piston 9, in which the coupling rod 4 is arranged centrally.
  • the conclusion is the pump cover 32. Wie- In turn, this limits a pumping space through and through the end wall 33, in which the membrane 6 moves with the support disk 20.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)

Abstract

L'invention concerne une pompe à double membrane à haute pression possédant : un carter central (3); deux chambres de pompage cylindriques (7, 8); une tige de couplage (4) animée d'un mouvement alternatif lorsque la pompe est en mode de pompage et pourvue d'un piston de pompe (9); deux membranes (5, 6) divisant chacune une des chambres de pompage (7, 8) en une chambre de produit (11, 12) et en une chambre d'air comprimé (1, 2) à volume variable, membranes dont le corps élastomère (15) est enserré périphériquement, un corps d'implant rigide (17) étant incorporé dans la région centrale du corps de membrane (15) et étant pourvu d'un tenon (18) qui est assemblé à une extrémité de la tige de couplage (4), ainsi qu'une unité de commande pneumatique pour alimenter en alternance les chambres d'air comprimé en air comprimé. Un disque de soutien rigide respectif (20) est enfilé sur le tenon (18) dans la région des chambres d'air comprimé (1, 2) entre l'extrémité de la tige de couplage (4) et le côté intérieur de la membrane (5). Son diamètre est compris entre 50 et 95% du diamètre de la surface de travail de la membrane (5), et sa périphérie est réalisée sous la forme d'un épaulement (21) arrondi, à l'opposé du corps de membrane (15).
PCT/EP2008/061052 2007-08-23 2008-08-22 Pompe à double membrane à haute pression, et élément formant membrane pour une telle pompe WO2009024619A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP08803172A EP2179177A1 (fr) 2007-08-23 2008-08-22 Pompe à double membrane à haute pression, et élément formant membrane pour une telle pompe
DE202008017904U DE202008017904U1 (de) 2007-08-23 2008-08-22 Hochdruck-Doppelmembranpumpe und Membranelement für eine solche Pumpe
US12/674,453 US20110229352A1 (en) 2007-08-23 2008-08-22 High Pressure Double Membrane Pump and Membrane Element for Such a Pump

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007039964A DE102007039964B4 (de) 2007-08-23 2007-08-23 Hochdruck-Doppelmembranpumpe und Membranelement für eine solche Pumpe
DE102007039964.4 2007-08-23

Publications (2)

Publication Number Publication Date
WO2009024619A1 true WO2009024619A1 (fr) 2009-02-26
WO2009024619A4 WO2009024619A4 (fr) 2009-04-23

Family

ID=39938235

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/061052 WO2009024619A1 (fr) 2007-08-23 2008-08-22 Pompe à double membrane à haute pression, et élément formant membrane pour une telle pompe

Country Status (4)

Country Link
US (1) US20110229352A1 (fr)
EP (1) EP2179177A1 (fr)
DE (2) DE102007039964B4 (fr)
WO (1) WO2009024619A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011116910A2 (fr) 2010-03-26 2011-09-29 Promera Gmbh & Co. Kg Soupape pour le remplissage alterné de deux chambres de travail d'un système piston-cylindre d'une pompe
DE102010013108A1 (de) 2010-03-26 2011-09-29 Promera Gmbh & Co. Kg Doppelmembranpumpe
CN103925200A (zh) * 2014-03-21 2014-07-16 上海如迪流体输送设备有限公司 一种气动隔膜泵
DE202014105320U1 (de) 2014-11-05 2015-01-12 Timmer-Pneumatik Gmbh Membranpumpe, insbesondere pneumatische Doppelmembranpumpe
CN107073185A (zh) * 2014-09-04 2017-08-18 弗雷森纽斯医疗护理德国有限责任公司 医用膜泵驱动器的系统压缩率值的确定方法

Families Citing this family (17)

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Publication number Priority date Publication date Assignee Title
US8764732B2 (en) 2007-11-21 2014-07-01 Smith & Nephew Plc Wound dressing
GB0723855D0 (en) 2007-12-06 2008-01-16 Smith & Nephew Apparatus and method for wound volume measurement
GB201015656D0 (en) 2010-09-20 2010-10-27 Smith & Nephew Pressure control apparatus
US9067003B2 (en) 2011-05-26 2015-06-30 Kalypto Medical, Inc. Method for providing negative pressure to a negative pressure wound therapy bandage
US9084845B2 (en) 2011-11-02 2015-07-21 Smith & Nephew Plc Reduced pressure therapy apparatuses and methods of using same
AU2013237095B2 (en) 2012-03-20 2017-10-05 Smith & Nephew Plc Controlling operation of a reduced pressure therapy system based on dynamic duty cycle threshold determination
US9427505B2 (en) 2012-05-15 2016-08-30 Smith & Nephew Plc Negative pressure wound therapy apparatus
DE102013102731B4 (de) 2013-03-18 2017-02-09 Timmer-Pneumatik Gmbh Gehäuse einer druckluftbetriebenen Doppelmembranpumpe
CN104481852B (zh) * 2014-10-28 2016-08-31 上海空间推进研究所 一种补偿膜盒组件及其安装方法
SG11201704255WA (en) 2014-12-22 2017-07-28 Smith & Nephew Negative pressure wound therapy apparatus and methods
EP3115607B1 (fr) 2015-07-10 2018-02-21 J. Wagner AG Pompe a double membrane
DE102016001806B4 (de) 2016-02-17 2022-10-13 Timmer Gmbh Membranpumpe, Membran für eine Membranpumpe und Verfahren zum Nachweis einer defekten Membran einer Membranpumpe
CN105889041A (zh) * 2016-06-29 2016-08-24 湖州安瑞能液压气动科技有限公司 膜片式汽车用电动真空泵的进排气机构
CN105889042A (zh) * 2016-06-29 2016-08-24 湖州安瑞能液压气动科技有限公司 膜片式汽车用电动真空泵
CN106089662A (zh) * 2016-06-29 2016-11-09 湖州安瑞能液压气动科技有限公司 膜片式汽车用电动真空泵的活塞组件
DE102017126651B4 (de) 2017-11-13 2021-05-27 Timmer Gmbh Pumpeinrichtung mit über einem gemeinsamen Antrieb gekoppelten Pumpen
EP3936235A1 (fr) * 2020-07-10 2022-01-12 Wagner International Ag Installation de revêtement destinée au revêtement de pièces d'une matière de revêtement

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FR1149743A (fr) * 1956-05-09 1957-12-31 Compresseur à membrane et à manivelle de commande, plus particulièrement pour installations de refroidissement
US5607290A (en) * 1995-11-07 1997-03-04 Wilden Pump & Engineering Co. Air driven diaphragm pump
DE29709831U1 (de) * 1997-06-06 1997-08-14 Wolfgang Eichler GmbH & Co KG, 76327 Pfinztal Dosierpumpe mit einem flanschartigen Zwischenstück zur Montage am Einsatzort
DE19647882A1 (de) * 1996-11-20 1998-05-28 Knf Neuberger Gmbh Membranpumpe
EP1712796A1 (fr) * 2005-04-12 2006-10-18 J. Wagner AG Pompe à mebrane

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DE4007932A1 (de) * 1990-03-13 1991-09-19 Knf Neuberger Gmbh Membranpumpe mit einer formmembrane
DE9406216U1 (de) * 1994-04-14 1994-09-22 Knf-Neuberger Gmbh, 79112 Freiburg Membranpumpe mit einer Formmembran
DE4427981C1 (de) * 1994-08-08 1995-12-07 Huewel Ralf Hydraulisch oder pneumatisch betriebene Kolben- und/oder Membran-Pumpe
DE19535745C1 (de) * 1995-09-26 1997-03-13 Boellhoff Verfahrenstech Membranpumpe
US5927954A (en) * 1996-05-17 1999-07-27 Wilden Pump & Engineering Co. Amplified pressure air driven diaphragm pump and pressure relief value therefor
US6901961B2 (en) * 2002-09-06 2005-06-07 Ingersoll-Rand Company Double diaphragm pump having a spool valve
US6883417B2 (en) * 2003-03-19 2005-04-26 Ingersoll-Rand Company Connecting configuration for a diaphragm in a diaphragm pump

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1149743A (fr) * 1956-05-09 1957-12-31 Compresseur à membrane et à manivelle de commande, plus particulièrement pour installations de refroidissement
US5607290A (en) * 1995-11-07 1997-03-04 Wilden Pump & Engineering Co. Air driven diaphragm pump
DE19647882A1 (de) * 1996-11-20 1998-05-28 Knf Neuberger Gmbh Membranpumpe
DE29709831U1 (de) * 1997-06-06 1997-08-14 Wolfgang Eichler GmbH & Co KG, 76327 Pfinztal Dosierpumpe mit einem flanschartigen Zwischenstück zur Montage am Einsatzort
EP1712796A1 (fr) * 2005-04-12 2006-10-18 J. Wagner AG Pompe à mebrane

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2179177A1 *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011116910A2 (fr) 2010-03-26 2011-09-29 Promera Gmbh & Co. Kg Soupape pour le remplissage alterné de deux chambres de travail d'un système piston-cylindre d'une pompe
DE102010013108A1 (de) 2010-03-26 2011-09-29 Promera Gmbh & Co. Kg Doppelmembranpumpe
WO2011116911A2 (fr) 2010-03-26 2011-09-29 Promera Gmbh & Co. Kg Pompe à membrane double
DE102010013107A1 (de) 2010-03-26 2011-09-29 Promera Gmbh & Co. Kg Ventil zum alternierenden Befüllen zweier Arbeitsräume eines Kolben-Zylinder-Systems einer Pumpe
CN103925200A (zh) * 2014-03-21 2014-07-16 上海如迪流体输送设备有限公司 一种气动隔膜泵
CN107073185A (zh) * 2014-09-04 2017-08-18 弗雷森纽斯医疗护理德国有限责任公司 医用膜泵驱动器的系统压缩率值的确定方法
CN107073185B (zh) * 2014-09-04 2021-01-05 弗雷森纽斯医疗护理德国有限责任公司 医用膜泵驱动器的系统压缩率值的确定方法
DE202014105320U1 (de) 2014-11-05 2015-01-12 Timmer-Pneumatik Gmbh Membranpumpe, insbesondere pneumatische Doppelmembranpumpe

Also Published As

Publication number Publication date
WO2009024619A4 (fr) 2009-04-23
US20110229352A1 (en) 2011-09-22
DE202008017904U1 (de) 2010-11-11
EP2179177A1 (fr) 2010-04-28
DE102007039964A1 (de) 2009-02-26
DE102007039964B4 (de) 2011-06-22

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