EP0982499B1 - Pompe centrifuge à entrainement magnétique - Google Patents

Pompe centrifuge à entrainement magnétique Download PDF

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Publication number
EP0982499B1
EP0982499B1 EP99114038A EP99114038A EP0982499B1 EP 0982499 B1 EP0982499 B1 EP 0982499B1 EP 99114038 A EP99114038 A EP 99114038A EP 99114038 A EP99114038 A EP 99114038A EP 0982499 B1 EP0982499 B1 EP 0982499B1
Authority
EP
European Patent Office
Prior art keywords
pump
bearing
sleeve
rotary pump
rotor
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
EP99114038A
Other languages
German (de)
English (en)
Other versions
EP0982499A1 (fr
Inventor
Peter Wirz
Thomas Folsche
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.)
CP Pumpen AG
Original Assignee
CP Pumpen AG
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 CP Pumpen AG filed Critical CP Pumpen AG
Publication of EP0982499A1 publication Critical patent/EP0982499A1/fr
Application granted granted Critical
Publication of EP0982499B1 publication Critical patent/EP0982499B1/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
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/046—Bearings
    • F04D29/047—Bearings hydrostatic; hydrodynamic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/021—Units comprising pumps and their driving means containing a coupling
    • F04D13/024—Units comprising pumps and their driving means containing a coupling a magnetic coupling
    • F04D13/026—Details of the bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/046—Bearings
    • F04D29/0465—Ceramic bearing designs

Definitions

  • the present invention relates to a magnetically coupled centrifugal pump according to the preamble of claim 1.
  • Such a centrifugal pump is for example from EP 0171515 or EP 0237868, in which the pump chamber with therein on a stationary Axis floating pump impeller by a static sealing canned pot is separated from the engine compartment.
  • the Drive motor is equipped with a permanent magnet Internal rotor connected, which is close to the engine compartment side Wall of the canned pot is arranged.
  • the pump impeller is in turn with a permanent rotor provided with external rotor connected, which is close to the pump-side wall the canned pot is arranged.
  • Such pumps are used in particular for fluid media, which an optimal tightness resp. avoidance of Leaks require, and in which no movable resp. dynamic Seals are approved, such as at aggressive or toxic media.
  • To the pump room such To be able to empty pumps, they are usually with horizontally disposed Pumpenlaufradachse arranged, wherein in the lower Area of the pump room separate, additional drainage nozzle must be provided. These drainage nozzles But now also have to be sealed again, with these So-called dead spaces can occur in which residues of the medium to be conveyed, ie a complete one Emptying can not be achieved.
  • the described pump fulfills these additional criteria only insufficient, in particular, the intake is through the conventional use of multi-part, stationary axes and arranged in the pump impeller metallic threaded bushes with shrunken plain bearing bush not free of dead space, resulting in insufficient cleaning and sterilization of the pump room leads.
  • the inventive design of the storage of the pump impeller on the stationary axis of the pump impeller in shape a one-piece sliding bearing, which except the bearing gap no columns resp. Has dead spaces, in which the promotional Medium could penetrate, the compact pump interior completely emptied, cleaned and disinfected. Moreover, the only camp will be at resumption of operation immediately washed with the medium to be pumped and can thus Do not run dry and be damaged. The rest, too Training both the storage area as the pump impeller promote and support these properties as well. advantageously, It also becomes a very compact and simple one Construction of the pump reached, which is easy to wait and repair if necessary.
  • Such a pump designed according to the invention is suitable for use in fluid processing technology and in particular in the field of sterile process engineering.
  • FIG. 1 shows the longitudinal section through an inventive device Centrifugal pump with drive housing 1, a pump housing 2 and an attached suction flange resp. -socket 3.
  • drive housing 1 in drive housing 1 is on a flywheel 4 a permanent magnet rotor 5 arranged.
  • a canned pot 6 is arranged, which only over its pot edge 6 'with the drive housing 1 respectively.
  • the Pump housing 2 is connected and the drive chamber 1 'from the pump room 2 'statically sealing separates.
  • the flywheel 4 is on a shaft 7 with a not shown in the figure Drive motor, such as an electric motor arranged.
  • a pump impeller 8 is arranged, which For example, directly in the PumpenraisingradSystem integrated permanent magnets 9, which is an outer permanent magnet rotor form.
  • the two permanent magnet rotor 5 and 9 are spaced from each other by the wall of the Canned pot 6 separated, arranged parallel to the pump axis 10.
  • pump blades are formed which contain the medium in the outer region of the pump chamber 2 'promote and remove via a pump outlet opening 11.
  • the pump impeller 8 is now on a stationary axis of the Pump bearing support 12 mounted, which fixed to the pump housing 2 is connected, and whose nose into the suction chamber 3 'of the Inlet 3 opens.
  • the storage of the pump impeller 8 on the pump bearing support 12th is now according to the invention as follows in the form of a sliding bearing realsiert.
  • On the pump bearing support 12 is preferably a Sleeve 13 applied as a bearing axis, in the present case by means a clamping screw 14.
  • the connecting surfaces between the sleeve 13 and the pump bearing support 12, respectively. the head of the Clamping screw 14 are sealed by means of O-rings 15.
  • the metal sleeve 17 is preferably made of a material with a high yield strength, good heat resistance, good corrosion resistance and preferably one thermal expansion coefficient, which is in the range the thermal expansion coefficient of the bearing bush 16 is located.
  • the dimensions of the metal sleeve 17th are designed so that they at least partially plastic is deformed, preferably completely plastically deformed becomes. Through this metal sleeve 17 is on the bearing bush 16 achieved a favorable stress distribution, which no Has voltage peaks.
  • FIG. 2 shows yet another preferred embodiment of the present invention.
  • the pump bearing support 12 in one piece at the same time Also designed as a bearing axis in the bearing bush 16.
  • This embodiment is compared to the embodiment simplified again after Figure 1 and can be even easier clean and, if necessary, disassemble.
  • a through bore 18 can formed here in the pump bearing support 12, a through bore 18 be, which simplifies the cleaning of the pump room and in operation the pressure equalization between the intake 3 'and the rear of the pump impeller 8 is used.
  • the pump presented here is suitable because of the simple and compact design and the avoidance of dead spaces and Columns especially for applications in the field of sterile Process engineering, of course, but also for all other applications are used.

Claims (13)

  1. Pompe centrifuge avec une gaine tubulaire d'interstice (6) qui rend son espace de pompe (2'), côté entraínement, étanche par rapport à un produit pompé et sur un côté de laquelle est disposé un premier rotor à aimants permanents (5) entraíné par moteur tandis que sur son autre côté est disposé un second rotor à aimants permanents (9) relié à un rotor de pompe (8), la gaine tubulaire (6) n'étant reliée aux éléments de pompe (1, 2) qu'au niveau de son bord (6') et le rotor de pompe (8) étant tourné vers un conduit d'aspiration (3') sur son côté opposé à la gaine (6), dans la zone du moyeu, et étant monté en rotation sur un axe fixe d'un support de pompe (12) qui est disposé dans le conduit d'aspiration (3') et qui est solidaire de l'enveloppe (2) de la pompe centrifuge,
       caractérisée en ce qu'un coussinet (16) est relié au rotor de pompe (8) à l'aide d'un manchon (17) en métal qui est thermoformé sur le coussinet (16), et forme en coopération avec un axe de palier disposé sur le support de pompe (12) le palier unique, sous la forme d'un palier lisse du rotor de pompe (8).
  2. Pompe centrifuge selon la revendication 1, caractérisée en ce que le manchon (17) présente une épaisseur de paroi plusieurs fois inférieure à celle du coussinet (16).
  3. Pompe centrifuge selon la revendication 1 ou 2, caractérisée en ce que le manchon (17) se compose d'une matière métallique qui présente une limite d'élasticité élevée, une résistance thermique élevée et une bonne résistance à la corrosion par rapport aux fluides.
  4. Pompe centrifuge selon l'une des revendications 1 à 3, caractérisée en ce que le manchon (17) présente à peu près le même coefficient de dilatation thermique que le coussinet (16).
  5. Pompe centrifuge selon l'une des revendications 1 à 4, caractérisée en ce que le manchon (17) a une longueur au maximum égale, mais de préférence inférieure à celle du coussinet (16).
  6. Pompe centrifuge selon l'une des revendications 1 à 5, caractérisée en ce que le manchon (17) est aussi long ou plus long que le moyeu du rotor de pompe (8) dans lequel il est inséré.
  7. Pompe centrifuge selon l'une des revendications 1 à 6, caractérisée en ce que le manchon (17) est relié au rotor de pompe (8) le long de ses deux bords à l'aide de soudures, de préférence des soudures étanches aux fluides.
  8. Pompe centrifuge selon l'une des revendications 1 à 7, caractérisée en ce que le coussinet (16) se compose d'une matière céramique ou d'un métal dur.
  9. Pompe centrifuge selon l'une des revendications 1 à 8, caractérisée en ce que la surface de tourillon est formée par une douille (13) qui est disposée de manière concentrique sur l'axe fixe du support de pompe (12).
  10. Pompe centrifuge selon la revendication 9, caractérisée en ce que la douille (13) est serrée à l'aide d'une vis (14) contre l'axe fixe du support de pompe (12) et est rendue étanche par rapport à celui-ci à l'aide de moyens d'étanchéité, de préférence des joints toriques (15).
  11. Pompe centrifuge selon l'une des revendications 1 à 8, caractérisée en ce que la surface de palier lisse est formée par l'axe fixe du support de pompe (12) lui-même, de préférence avec une construction d'une seule pièce.
  12. Pompe centrifuge selon l'une des revendications 1 à 11, caractérisée en ce que les fonds des ailettes du rotor de pompe (8) présentent au moins dans la zone du moyeu de rotor de pompe des creux continus (8').
  13. Utilisation d'une pompe centrifuge selon l'une des revendications 1 à 12, caractérisée en ce qu'en fonctionnement, l'axe du rotor de pompe est disposé à la verticale.
EP99114038A 1998-08-21 1999-07-20 Pompe centrifuge à entrainement magnétique Expired - Lifetime EP0982499B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH172798 1998-08-21
CH172798 1998-08-21

Publications (2)

Publication Number Publication Date
EP0982499A1 EP0982499A1 (fr) 2000-03-01
EP0982499B1 true EP0982499B1 (fr) 2005-02-09

Family

ID=4217197

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99114038A Expired - Lifetime EP0982499B1 (fr) 1998-08-21 1999-07-20 Pompe centrifuge à entrainement magnétique

Country Status (4)

Country Link
US (1) US6280156B1 (fr)
EP (1) EP0982499B1 (fr)
AT (1) ATE289008T1 (fr)
DE (1) DE59911579D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2534195C2 (ru) * 2011-11-03 2014-11-27 Ассома Инк. Насос с магнитным приводом

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1329638A1 (fr) * 2002-01-18 2003-07-23 CP Pumpen AG Pompe centrifuge à entrainement magnétique
US7128538B2 (en) * 2003-07-07 2006-10-31 Terumo Corporation Centrifugal fluid pump apparatus
ATE366876T1 (de) * 2004-11-23 2007-08-15 Ebm Papst St Georgen Gmbh & Co Anordnung zur förderung von fluiden
JP6120826B2 (ja) 2011-04-18 2017-04-26 レスメド・モーター・テクノロジーズ・インコーポレーテッド Ｐａｐシステムブロワ
DE102011086460A1 (de) * 2011-11-16 2013-05-16 Robert Bosch Gmbh Flüssigkeitspumpe mit axialer Anlaufscheibe
EP2610498B1 (fr) * 2011-12-27 2016-11-16 Grundfos Holding A/S Groupe motopompe
US8905728B2 (en) 2011-12-30 2014-12-09 Peopleflo Manufacturing, Inc. Rotodynamic pump with permanent magnet coupling inside the impeller
US8905729B2 (en) 2011-12-30 2014-12-09 Peopleflo Manufacturing, Inc. Rotodynamic pump with electro-magnet coupling inside the impeller
DE102013008795B3 (de) * 2013-05-24 2014-08-21 Ksb Aktiengesellschaft Pumpenanordnung
DE102014223795A1 (de) * 2014-11-21 2016-05-25 Robert Bosch Gmbh Pumpe, insbesondere eine Kraftstoffhochdruckpumpe
DE102014225247A1 (de) 2014-12-09 2016-06-09 Robert Bosch Gmbh Verfahren zum Flüssigkeitsstrahlschneiden
CA3041837C (fr) * 2016-11-01 2021-08-10 Psg Worldwide, Inc. Pompe centrifuge sans joint a entrainement magnetique

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3938914A (en) * 1967-11-01 1976-02-17 March Manufacturing Company Pump impeller and coupling magnet structures
JPS61152998A (ja) * 1984-12-27 1986-07-11 Toshiba Corp インペラ構造体
CH672820A5 (fr) * 1986-03-21 1989-12-29 Ernst Hauenstein
DE3633400A1 (de) * 1986-10-01 1988-04-14 Halberg Maschbau Gmbh & Co Wellenschutzhuelse fuer gleitlager und laufflaechen von dichtungen und stopfbuchspackungen
US4871301A (en) * 1988-02-29 1989-10-03 Ingersoll-Rand Company Centrifugal pump bearing arrangement
DE4026717A1 (de) * 1990-08-24 1992-02-27 Uraca Pumpen Verdraenger- bzw. kolbenpumpe
US5261676A (en) * 1991-12-04 1993-11-16 Environamics Corporation Sealing arrangement with pressure responsive diaphragm means
EP0583003A1 (fr) * 1992-08-13 1994-02-16 Perseptive Biosystems, Inc. Système pour le dosage, le mélange et le contrôle de la composition de fluides
US5411378A (en) * 1992-09-08 1995-05-02 Sipin; Anatole J. Orbiting fluid pump
US6024542A (en) * 1994-02-14 2000-02-15 Phillips Engineering Co. Piston pump and method of reducing vapor lock
US5569383A (en) * 1994-12-15 1996-10-29 Delaware Capital Formation, Inc. Filter with axially and rotatably movable wiper
JP4016441B2 (ja) * 1996-10-02 2007-12-05 株式会社ジェイ・エム・エス ターボ式血液ポンプ

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2534195C2 (ru) * 2011-11-03 2014-11-27 Ассома Инк. Насос с магнитным приводом

Also Published As

Publication number Publication date
ATE289008T1 (de) 2005-02-15
DE59911579D1 (de) 2005-03-17
US6280156B1 (en) 2001-08-28
EP0982499A1 (fr) 2000-03-01

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