EP1373731B1 - Pompe volumetrique oscillante - Google Patents

Pompe volumetrique oscillante Download PDF

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Publication number
EP1373731B1
EP1373731B1 EP02726216A EP02726216A EP1373731B1 EP 1373731 B1 EP1373731 B1 EP 1373731B1 EP 02726216 A EP02726216 A EP 02726216A EP 02726216 A EP02726216 A EP 02726216A EP 1373731 B1 EP1373731 B1 EP 1373731B1
Authority
EP
European Patent Office
Prior art keywords
pump
pressure
chamber
damping
outlet
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
EP02726216A
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German (de)
English (en)
Other versions
EP1373731A1 (fr
Inventor
Robert KÄCH
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.)
KNF Flodos AG
Robert Bosch GmbH
Original Assignee
KNF Flodos AG
Robert Bosch 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 KNF Flodos AG, Robert Bosch GmbH filed Critical KNF Flodos AG
Publication of EP1373731A1 publication Critical patent/EP1373731A1/fr
Application granted granted Critical
Publication of EP1373731B1 publication Critical patent/EP1373731B1/fr
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
    • 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
    • F04B11/00—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
    • 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
    • F04B11/00—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
    • F04B11/0008—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using accumulators

Definitions

  • the invention relates to an oscillating positive displacement pump for liquid or gaseous media, with a delivery chamber, which is bounded on the one hand by a pump head and on the other hand by a conveying element, which is in drive connection with a lifting drive, wherein to the delivery chamber connected to an inlet port inlet valve and an outlet valve connected to an outlet valve are connected, wherein the pump at least on the pressure side a pulsation damper and between the pressure and the suction side has a pressure relief device, in particular a diaphragm pump with a conveyor element formed by a membrane.
  • Diaphragm pumps which are used as liquid pumps but also as gas pumps, operate on the principle of oscillating positive displacement pumps. Naturally, this principle causes pulsation on both the suction and the pressure side.
  • Pulsation on the suction side can cause cavitation, pressure surges and vibrations in diaphragm pumps and especially in high-speed diaphragm pumps.
  • Pressure surges can damage or affect the function of devices mounted in the suction line. Vibrations cause noise and are transmitted to peripherals or to the entire device.
  • Pulsation on the pressure side causes pressure surges and vibrations in diaphragm pumps.
  • the effects are the same as on the suction side but even more radical, because on the pressure side - in contrast to the suction side - the pressure peaks can rise much higher.
  • membrane fluid pumps compress a fluid until the weakest link in the chain yields. This will damage this item.
  • a pump of the type mentioned is known. This has a suction-side and a pressure-side damper each with a damping chamber with an air filling. Between the damping chamber and the inlet chamber or the outlet chamber is a disc with one or more openings or of porous material, provided. These partially transparent disks between the air filling and the liquid conveying medium in the inlet chamber or the outlet chamber are intended to prevent the damping air cushion being entrained with the liquid flow.
  • Such a damping device can only work in a position of use of the pump, where the damping chambers are at the top.
  • the pump is provided only for conveying liquids and finally the damping chambers for a sufficient damping are still relatively bulky.
  • Object of the present invention is to provide a positive displacement pump, in particular a diaphragm pump for liquid or gaseous media, in which both the suction side and the pressure side pressure peaks are avoided, which also increased safety requirements and still has a compact design.
  • a connection block is provided as part of the pump head, in which at least the pulsation damper, the overpressure limiting device and when used as a liquid pump in the suction-side part of the pump head an oscillating chamber are integrated and which has the inlet nozzle and the outlet, that the Pulsation damper has at least one damping chamber, which is divided by means of a separation membrane into a receiving space for damping elements and in a conveying medium leading area, are arranged within the damping chambers damping elements made of elastic material, that the pressure-side Pulsationsdämpfer is connected via an outlet throttle body with an outlet, which in turn is connected to the pressure-side, the outlet port forming line connection and that connected between the pressure and the suction side of the pump pressure relief device with its pressure side connected to the pressure-side line connection.
  • connection block of the pump head results in a particularly compact design. Connecting lines, which would be required in a remote arrangement of facilities are avoided.
  • terminal block also allows for optimal arrangement of the individual devices and it is possible to provide one or the other device only as needed and thus to take into account an adaptation to different applications as well as unused devices disabled, for example by blind cover. Also, the production is simplified.
  • the damping elements can not come into communication with the fluid, so that the damping elements used can be tailored exclusively to the required damping properties and a resistance to the respective fluid is not required.
  • the pump can be operated independently of position by the separation membrane between the receiving space for damping elements and the conveying medium leading area.
  • the vibration chamber integrated in the suction-side part of the pump head when used as a fluid pump has a vibration diaphragm which divides the vibration chamber into a chamber part connected to the suction side and a chamber part connected to the ambient air via an opening.
  • the pressure relief device provides pressure monitoring or pressure limiting and protects the pump from damage when the pressure rises due to a closed or clogged system.
  • the overpressure relief which is located between the pressure and suction sides of the pump head, is used to set the maximum allowable pressure on the discharge side of the pump or to maintain a constant pressure on the discharge side of the pump regardless of the flow rate.
  • the present invention thus reduces pressure peaks on both the suction and on the pressure side and limited by the overpressure limiting device, the pressure increase on the pressure side to a predetermined value.
  • the pressure-side pulsation damper By arranging the pressure-side pulsation damper with its outlet throttle body before the pressure-side connection of the pressure-limiting device, it can be adjusted to the already smoothed pressure, so that pressure peaks no longer have to be taken into account. Pressure peaks only reach the overpressure limiting device in a dampened form, so that the overpressure limiting device can be adjusted more sensitively and more accurately and, in particular, the adjustment can be made very close to the operating pressure.
  • the arrangement of the pressure-side Pulsationsdämpfers with its outlet throttle body before the pressure-side connection of the overpressure limiting device in the pump according to the invention advantageous that the damping effect by the throttle integrated into the pump exactly predetermined and thus an accurate adjustment of the pressure relief device before delivery of the pump and allows connection to peripheral devices.
  • the pump head has an approximately cuboid pump head housing, with a connection side for an intermediate plate having the valves, opposite to this connection side with the overpressure limiting device, and that on the four other circumferential sides opposite the inlet port and the outlet port and the pressure side Pulsationsdämpfer and optionally the suction-side vibration chamber are mounted.
  • This is the inputs or attachments - pressure relief, pulsation damper, vibration chamber - the pump head independently accessible and thereby, among other things, easy to assemble and disassemble.
  • One embodiment of the pressure-side pulsation damper provides that it has at least two series-connected damping chambers within the pump head or a damper housing belonging to the pump head, for this purpose a line section connected to an inlet has a connection channel to a first damping chamber and via an inlet throttle element to a second, connected via an outlet throttle body with an outlet damping chamber is connected.
  • the series connection of several damper stages achieves a high damping, which increases exponentially with the number of damper stages.
  • the throttle bodies in conjunction with the damping chambers form attenuators, which can caching and releasing medium when pressure fluctuations occur. Through the throttle bodies, a dynamic pressure is built up during a pressure surge, by which a pressure charging of the attenuators and a throttled delivery of fluid in the subsequent pressure phase to the pressure drop phase is possible.
  • a pump P shown in the figure has a pump housing 1, to which a motor 50 is flanged laterally.
  • a crank drive for a pump diaphragm 6 has two crankshaft bearings 2, an eccentric 3 and a connecting rod bearing 4.
  • a connecting rod 5 has a connection point 15, via which it is connectable to the pump diaphragm 6.
  • the pump diaphragm Upon rotation of the crank drive, the pump diaphragm is placed in a stroke movement.
  • On the pump housing 1, an intermediate plate 7 is mounted, between which and the pump diaphragm 6, a pumping chamber is formed.
  • the intermediate plate 7 includes an attached valve plate 8, an inlet valve and an exhaust valve.
  • the intermediate plate 7 and an adjoining terminal block 9 essentially form the pump head.
  • the terminal block 9 as part of the pump head is formed approximately cuboid in the embodiment.
  • One of the six sides forms a connection side for the intermediate plate. 7
  • the functional parts of a pressure-limiting device 27 are shown. This is used to set the maximum allowable pressure on the pressure side of the pump and has a flow connection between Pressure side and suction side, which is closed in normal operation by an overflow valve.
  • a pressure control diaphragm 20 engages in an inner cavity of the connection block 9 and is there sealingly on an opening 28 connected to the suction side.
  • the pressure control diaphragm 20 is pressurized by a spring 21, wherein the pressurization by an adjusting screw 23 is adjustable.
  • a lock nut 24 with washer 25 serves to secure the respective setting of the adjusting screw 23rd
  • the inner cavity of the terminal block 9 for receiving the pressure regulating diaphragm 20 and the like is closed by a pressure cover 22 which is held by means of screws 26. Within the recess are still connected to the pressure side opening 29 can be seen.
  • a line connection 14 inlet port
  • a line connection 12 outlet
  • the other two peripheral sides of the terminal block have, on the one hand, a pulsation damper 45 connected to the pressure side and, on the other side, a vibration chamber 16.
  • the pulsation damper 45 has a large damping element 40 and a small damping element 41, which are located in separate damper chambers.
  • the damping elements may be different in terms of their mass and / or their volume.
  • the two associated damping chambers are, which is not shown in detail, connected to each other via a line section.
  • This line section has a pressure side Inlet with a connection channel to the first damping chamber.
  • the line section is connected to the second damping chamber, which in turn is connected via an outlet throttle body with an outlet, which in turn is connected to the pressure-side line connection 12.
  • the damping elements located inside the damping chambers are made of resilient material.
  • the damping chambers of the pressure-side pulsation damper 45 are divided by means of a separating membrane 42 into a receiving space for the damping elements 40, 41 and into a conveying medium leading area.
  • a damper cover 43 is provided as the outer termination of the pulsation damper 45, which may have a part or the total volume of the damping chambers here.
  • the damping chambers are completely integrated in the terminal block 9. With the help of screws 44, the damper cover 43 is held on the terminal block 9.
  • the vibration chamber 16 On the opposite side of the pulsation damper 45 is the vibration chamber 16.
  • This vibration chamber has an inner cavity connected to the suction side in the connection block 9.
  • a vibrating diaphragm 10 divides the vibrating chamber into a chamber part connected to the suction side and a chamber part connected to the environment via an opening 17.
  • a cover plate 11 To hold the vibrating diaphragm 10 and as the conclusion of the vibration chamber is a cover plate 11 which is held by screws 13 on the terminal block 9.
  • a suction-side pulsation damper is formed.
  • the vibration damping can also be optimized depending on the respective pumped medium.
  • a heater can be integrated. This may, as not shown in detail, a hot plate 30 including cable connections, optionally a heat distribution plate 31 and optionally a Einguß mass 31 include. This can be avoided at appropriate pressure and temperature conditions freezing of the pump head or it can be thawed frozen pump head this.

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

Claims (12)

  1. Pompe volumétrique oscillante pour des fluides refoulés liquides ou gazeux, avec une chambre de refoulement qui est délimitée d'un côté par une tête de pompe et de l'autre côté par un élément de refoulement qui se trouve en liaison d'entraînement avec un entraînement en translation, sachant qu'une soupape d'admission reliée à un piquage d'admission et une soupape d'évacuation reliée à un piquage d'évacuation sont raccordées à la chambre de refoulement, sachant que la pompe (P) présente au moins du côté de pression un amortisseur de pulsations (45) ainsi qu'un dispositif (27) de limitation des surpressions entre le côté de pression et le côté d'aspiration, la pompe étant notamment une pompe à membrane avec un élément de refoulement formé par une membrane, caractérisée en ce qu'il est prévu un bloc de raccordement comme partie de la tête de pompe, dans lequel sont intégrés au moins l'amortisseur de pulsations (45), le dispositif (27) de limitation des surpressions ainsi qu'une chambre d'oscillation (16) dans la partie côté aspiration de la tête de pompe dans le cas d'une utilisation comme pompe à liquides, et qui présente l'admission (14) ainsi que l'évacuation (12), en ce que l'amortisseur de pulsations (45) présente au moins une chambre d'amortissement qui, au moyen d'une membrane séparatrice, est divisée en un espace récepteur pour des éléments d'amortissement (40, 41) et une région dirigeant du fluide refoulé, en ce que des éléments d'amortissement (40, 41) en matériau à élasticité de ressort sont disposés à l'intérieur des chambres d'amortissement, en ce que l'amortisseur de pulsations (45) situé du côté de pression est relié par l'intermédiaire d'un organe d'étranglement d'évacuation à une évacuation qui est elle-même raccordée au branchement de conduite (12) situé du côté de pression qui constitue le piquage d'évacuation, et en ce que le dispositif (27) de limitation des surpressions raccordé entre le côté de pression et le côté d'aspiration de la pompe est raccordé par son côté de pression au branchement de conduite (12) situé du côté de pression.
  2. Pompe selon la revendication 1, caractérisée en ce que le dispositif (27) de limitation des surpressions situé entre le côté de pression et le côté d'aspiration de la pompe peut être déplacé vers le côté de pression de la pompe afin de régler la pression maximale admissible.
  3. Pompe selon la revendication 1 ou 2, caractérisée en ce que le dispositif (27) de limitation des surpressions présente une liaison entre le côté de pression et le côté d'aspiration de la pompe, et en ce qu'une soupape de trop-plein (20, 28), de préférence à pression de réaction réglable, est installée dans cette liaison.
  4. Pompe selon la revendication 3, caractérisée en ce que la soupape réglable de trop-plein présente une membrane (20) de régulation de pression sollicitée par ressort, dont la sollicitation élastique est réglable au moyen d'une vis de réglage (23).
  5. Pompe selon l'une des revendications 1 à 4, caractérisée en ce que la tête de pompe présente un boîtier de tête de pompe approximativement parallélépipédique (bloc de raccordement 9), avec une face de raccordement pour une plaque intermédiaire (7) présentant les soupapes, et avec le dispositif (27) de limitation des surpressions en vis-à-vis de cette face de raccordement, et en ce que le piquage d'admission (14) et le piquage d'évacuation (12) ainsi que l'amortisseur de pulsations (45) situé du côté de pression et le cas échéant la chambre d'oscillation (16) située du côté d'aspiration sont installés en vis-à-vis sur les quatre autres faces.
  6. Pompe selon l'une des revendications 1 à 5, caractérisée en ce que l'amortisseur de pulsations (45) situé du côté de pression présente au moins deux éléments d'amortissement (40, 41) différents quant à leur masse ou leurs matériaux, et/ou au moins deux chambres d'amortissement de volumes différents.
  7. Pompe selon l'une des revendications 1 à 6, caractérisée en ce que l'amortisseur de pulsations (45) situé du côté de pression présente au moins deux chambres d'amortissement reliées en série à l'intérieur de la tête de pompe ou d'un boîtier d'amortisseur (43) faisant partie de la tête de pompe, et en ce que, à cet effet, un tronçon de conduite raccordé à une admission présente un canal de liaison vers une première chambre d'amortissement et est raccordé par l'intermédiaire d'un organe d'étranglement d'admission à une deuxième chambre d'amortissement reliée à une évacuation par l'intermédiaire d'un organe d'étranglement d'évacuation.
  8. Pompe selon l'une des revendications 1 à 7, caractérisée en ce que le couvercle de tête de la pompe à membrane est conçu comme élément de liaison de telle sorte que les chambres fonctionnelles des composants (soupape de surpression, chambre oscillante) sont intégrées dans cet élément de liaison.
  9. Pompe selon l'une des revendications 1 à 8, caractérisée en ce que la ou les chambres d'amortissement de pulsations de l'amortisseur de pulsations (45) situé du côté de pression est ou sont conçues aussi bien comme couvercle de tête de la pompe que comme élément de liaison vers la chambre d'oscillation.
  10. Pompe selon l'une des revendications 1 à 9, caractérisée en ce que la chambre d'oscillation (16) située du côté d'aspiration présente une membrane oscillante (10) qui divise la chambre d'oscillation en une partie de chambre reliée au côté d'aspiration et une partie de chambre reliée à l'air ambiant par l'intermédiaire d'une ouverture (17).
  11. Pompe selon la revendication 10, caractérisée en ce que la membrane oscillante (10) de la chambre d'oscillation située du côté d'aspiration est adaptée, quant au rapport de son diamètre à son épaisseur, au fluide refoulé respectif afin d'optimiser l'amortissement des oscillations.
  12. Pompe selon l'une des revendications 1 à 11, caractérisée en ce qu'un chauffage (30, 31, 32) est intégré dans la tête de pompe.
EP02726216A 2001-04-06 2002-03-27 Pompe volumetrique oscillante Expired - Lifetime EP1373731B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10117418 2001-04-06
DE10117418A DE10117418A1 (de) 2001-04-06 2001-04-06 Oszillierende Verdrängerpumpe
PCT/EP2002/003411 WO2002081918A1 (fr) 2001-04-06 2002-03-27 Pompe volumetrique oscillante

Publications (2)

Publication Number Publication Date
EP1373731A1 EP1373731A1 (fr) 2004-01-02
EP1373731B1 true EP1373731B1 (fr) 2007-01-03

Family

ID=7680785

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02726216A Expired - Lifetime EP1373731B1 (fr) 2001-04-06 2002-03-27 Pompe volumetrique oscillante

Country Status (6)

Country Link
US (1) US7128541B2 (fr)
EP (1) EP1373731B1 (fr)
JP (1) JP4177115B2 (fr)
AT (1) ATE350579T1 (fr)
DE (2) DE10117418A1 (fr)
WO (1) WO2002081918A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2157295A1 (fr) 2008-08-21 2010-02-24 Robert Bosch GmbH Système de dosage pour un milieu liquide, notamment solution urée-eau
EP2505804A2 (fr) 2011-03-28 2012-10-03 Robert Bosch GmbH Système de dosage pour un milieu liquide, notamment une solution urée-eau
DE102020115618A1 (de) 2020-06-12 2021-12-16 Knf Flodos Ag Oszillierende Verdrängermaschine, insbesondere oszillierende Verdrängerpumpe

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PT2135538E (pt) * 2008-06-20 2012-01-06 Gojo Ind Inc Bomba de espuma de diafragma
JP5262590B2 (ja) * 2008-11-06 2013-08-14 Ｊｓｒ株式会社 樹脂組成物溶液の製造方法、及び製造装置
EP2194270B1 (fr) * 2008-12-05 2013-06-12 ebm-papst St. Georgen GmbH & Co. KG Pompe doseuse
US20110116940A1 (en) * 2009-11-17 2011-05-19 Cameron International Corporation Viscoelastic compressor pulsation dampener
EP2372157B2 (fr) 2010-03-18 2016-07-13 L & P Swiss Holding AG Pompe à diaphragme pour dispositif de réglage de siège et dispositif de réglage de siège
US8863784B2 (en) 2010-04-22 2014-10-21 Cameron International Corporation Viscoelastic damped jumpers
US9500247B2 (en) 2010-11-01 2016-11-22 University Of Houston Pounding tune mass damper with viscoelastic material
EP2771664B1 (fr) * 2011-10-26 2020-12-16 Research Triangle Institute, International Système de surveillance d'exposition à un aérosol
DE102011089509A1 (de) 2011-12-22 2013-06-27 Robert Bosch Gmbh Fördereinrichtung und Dosieranordnung
WO2015119717A1 (fr) 2014-02-07 2015-08-13 Graco Minnesota Inc. Pompe volumétrique non pulsée et procédé de déplacement de fluide non pulsé
US11002261B2 (en) * 2016-05-06 2021-05-11 Graco Minnesota Inc. Mechanically driven modular diaphragm pump
US11022106B2 (en) 2018-01-09 2021-06-01 Graco Minnesota Inc. High-pressure positive displacement plunger pump
KR20220156622A (ko) 2020-03-31 2022-11-25 그라코 미네소타 인크. 전기 작동식 변위 펌프
WO2022178342A1 (fr) * 2021-02-22 2022-08-25 Gojo Industries, Inc. Distributeurs de mousse ayant une combinaison de pompe à déplacement air/liquide de turbine

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2157295A1 (fr) 2008-08-21 2010-02-24 Robert Bosch GmbH Système de dosage pour un milieu liquide, notamment solution urée-eau
DE102008041410A1 (de) 2008-08-21 2010-02-25 Robert Bosch Gmbh Dosiersystem für ein flüssiges Medium, insbesondere Harnstoff-Wasser-Lösung
EP2505804A2 (fr) 2011-03-28 2012-10-03 Robert Bosch GmbH Système de dosage pour un milieu liquide, notamment une solution urée-eau
DE102011006187A1 (de) 2011-03-28 2012-10-04 Robert Bosch Gmbh Dosiersystem für ein flüssiges Medium, insbesondere eine Harnstoff-Wasser-Lösung
DE102020115618A1 (de) 2020-06-12 2021-12-16 Knf Flodos Ag Oszillierende Verdrängermaschine, insbesondere oszillierende Verdrängerpumpe

Also Published As

Publication number Publication date
ATE350579T1 (de) 2007-01-15
EP1373731A1 (fr) 2004-01-02
JP4177115B2 (ja) 2008-11-05
DE10117418A1 (de) 2002-10-17
US20040105764A1 (en) 2004-06-03
DE50209162D1 (de) 2007-02-15
JP2004522044A (ja) 2004-07-22
WO2002081918A1 (fr) 2002-10-17
US7128541B2 (en) 2006-10-31

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