EP1719914A2 - Pompe centrifuge à accouplement magnétique - Google Patents

Pompe centrifuge à accouplement magnétique Download PDF

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Publication number
EP1719914A2
EP1719914A2 EP06015105A EP06015105A EP1719914A2 EP 1719914 A2 EP1719914 A2 EP 1719914A2 EP 06015105 A EP06015105 A EP 06015105A EP 06015105 A EP06015105 A EP 06015105A EP 1719914 A2 EP1719914 A2 EP 1719914A2
Authority
EP
European Patent Office
Prior art keywords
shaft
bearing housing
rotor
pump
gap
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
Application number
EP06015105A
Other languages
German (de)
English (en)
Other versions
EP1719914A3 (fr
EP1719914B1 (fr
Inventor
Ulrich Rennett
Manfred Sett
Alfred Mersch
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.)
ITT Manufacturing Enterprises LLC
Original Assignee
ITT Manufacturing Enterprises LLC
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 ITT Manufacturing Enterprises LLC filed Critical ITT Manufacturing Enterprises LLC
Publication of EP1719914A2 publication Critical patent/EP1719914A2/fr
Publication of EP1719914A3 publication Critical patent/EP1719914A3/fr
Application granted granted Critical
Publication of EP1719914B1 publication Critical patent/EP1719914B1/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
    • F04D29/041—Axial thrust balancing
    • F04D29/0413—Axial thrust balancing hydrostatic; hydrodynamic thrust 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 invention relates to a centrifugal pump with a magnetic coupling arranged between the pump shaft and the drive shaft and a split pot in the magnetic gap between the inner magnet rotor of the pump and the outer magnet rotor of the drive shaft, wherein the inner magnet rotor is mounted on a tubular bearing housing in the interior of the split pot through which the fluid flows surrounding the pump impeller shaft having on the side facing away from the pump impeller fastening means for the inner magnet rotor, which is arranged between the bearing housing and the containment shell.
  • a conventional magnetic pump drive is from the DE 37 15 484 known. In addition, it is from the EP 0 398 175 known to lead a small portion of the fluid to be cooled between the stator and rotor.
  • magnetic coupling rotors with radial return vanes are known.
  • the blades serve to generate a flushing or cooling medium flow.
  • These radial blades are arranged on the front side of the magnetic coupling rotor and generate a flow rate in the radial direction by the medium accelerates by centrifugal force to the outer diameter of the rotor and through the Gap between rotor circumference and split pot is promoted. This conveying direction to the outer diameter is contrary to the required flow direction in order to be able to initiate the flushing medium flow directly into the rotor bearing positioned in the center of the rotor.
  • Radial blades generally produce only smaller mass flows at higher pressures, so that only very small amounts of flushing or cooling medium are available and the promotion can be interrupted due to cavitation. When enlarging the radial blades, although more medium is promoted, but the tendency to cavitation also increases. In addition, larger radial blades also require a higher hydraulic power, which is to be classified as a coupling power loss and therefore undesirable.
  • the object of the invention is to improve a centrifugal pump of the type mentioned so that at low hydraulic power loss high rinsing, cooling and lubricating performance, a high leakage safety is achieved.
  • This object is achieved in that in the annular gap between the bearing portion of the inner magnet rotor and the inner wall of the tubular bearing housing a helical groove in the inner wall of the tubular bearing housing and / or in the outer wall of the magnetic rotor bearing is arranged, which promotes the liquid through the bearings, which are arranged between the bearing housing and the shaft or the shaft sleeve.
  • the helical groove generates a sufficiently large flow through the radial and thrust bearings through with little design effort.
  • a respective helical groove is arranged at both ends of the bearing housing in the respective gap.
  • the centrifugal pump 1 with magnetic coupling has a rotating in a pump chamber impeller 2, which is fixed to one end of a shaft 3.
  • the shaft 3 carries a shaft sleeve 12, which is supported by two ceramic radial bearings 4, 5 and two ceramic thrust bearings 6, 7, which are fixed to the inner wall of a tubular bearing housing 8.
  • the bearing housing 8 is fixed to the wall 11, which separates the pump chamber 9 from the interior of a split pot 10, which is fixed to the partition wall 11.
  • the shaft 3 carries an inner pot-shaped magnet rotor 14.
  • a circular bottom 16 is integrally formed on the shaft 3 as a fastening means 15, on the outer edge of a tubular coaxial magnetic carrier 17 is formed on the outer edge, on the outside of the output magnets 18 are attached.
  • the bearing housing 8 thus extends coaxially in the magnet rotor 14, wherein between the magnet carrier 17 and the bearing housing 8, an annular space 19 and between the magnet carrier 17 and the gap pot 10 is an annular gap 20.
  • the split pot 10 is surrounded by a drive pot, not shown, which carries the drive magnets inside and is driven by a coaxial shaft of an electric motor.
  • annular coaxial Flow channel annular space 21 introduced, which is in the amount of the annular space 19 and is traversed by two to four radial axial blades 22 which hold the magnetic carrier 17 at the bottom 16.
  • the blades are formed at regular intervals (angles) on the bottom and magnetic carrier and have an angle of attack of 5 to 15 degrees.
  • the preferably three blades 22 convey the liquid entering through the inlet channels 23 into the crevice interior space from the annular gap 20 into the intermediate space 24 between the bearing housing 8 and the shaft sleeve 12 so that the fluid conveyed through it flows through the radial and axial bearings 4 to 7 to the pumping chamber flow back.
  • the tubular bearing housing 8 forms at the end facing away from the impeller 2 an annular gap 25 with an inner region of the inner magnet rotor or the fastening means 15.
  • a coaxial ring 26 is fixed, in which the outer thrust bearing 7 is present.
  • the outer side of the ring 26 forms, with the inside of the bearing housing 8, the annular gap 25 whose radial width B1 is less than the radial width B2 of the annular gap 20.
  • a helical coaxial groove 27 is introduced in the region of the gap 25, which conveys the liquid to the space 24 in the gap 25.
  • the groove 27 may also be arranged in the outer wall of the magnet rotor or of the ring 26.
  • a temperature sensor 28 is attached, indicating early, when a radial bearing is defective and the surfaces of the Rub gap 25 together.
  • a bearing defect may be indicated by a current sensing sensor 29 located in or on the lead 31 of the electric motor. These sensors are connected to a warning device (horn light, connection to the system monitoring) 30.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP06015105A 2000-05-22 2001-04-03 Pompe centrifuge à accouplement magnétique Expired - Lifetime EP1719914B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10024953A DE10024953A1 (de) 2000-05-22 2000-05-22 Kreiselpumpe mit Magnetkupplung
EP01108334A EP1158174B1 (fr) 2000-05-22 2001-04-03 Pompe centrifuge à accouplement magnétique

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP01108334A Division EP1158174B1 (fr) 2000-05-22 2001-04-03 Pompe centrifuge à accouplement magnétique
EP01108334.2 Division 2001-04-03

Publications (3)

Publication Number Publication Date
EP1719914A2 true EP1719914A2 (fr) 2006-11-08
EP1719914A3 EP1719914A3 (fr) 2006-11-15
EP1719914B1 EP1719914B1 (fr) 2010-10-27

Family

ID=7642885

Family Applications (2)

Application Number Title Priority Date Filing Date
EP01108334A Expired - Lifetime EP1158174B1 (fr) 2000-05-22 2001-04-03 Pompe centrifuge à accouplement magnétique
EP06015105A Expired - Lifetime EP1719914B1 (fr) 2000-05-22 2001-04-03 Pompe centrifuge à accouplement magnétique

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP01108334A Expired - Lifetime EP1158174B1 (fr) 2000-05-22 2001-04-03 Pompe centrifuge à accouplement magnétique

Country Status (4)

Country Link
US (1) US6554576B2 (fr)
EP (2) EP1158174B1 (fr)
AT (2) ATE356937T1 (fr)
DE (3) DE10024953A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011114191A1 (de) 2011-09-22 2013-03-28 Eagleburgmann Germany Gmbh & Co. Kg Spalttopf für eine Magnetkupplung mit verbesserter Fluidströmung
CN103410739A (zh) * 2013-07-24 2013-11-27 黄佳华 立式液下多组渣浆磁力泵

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8337166B2 (en) * 2001-11-26 2012-12-25 Shurflo, Llc Pump and pump control circuit apparatus and method
DE10221843B4 (de) * 2002-05-16 2004-12-30 Minebea Co., Ltd. Elektromotor zur Verwendung als Pumpenmotor und Pumpe
WO2011022557A2 (fr) * 2009-08-19 2011-02-24 Aspen Motion Technologies, Inc. D/B/A Ensemble pompe à entraînement magnétique avec moteur intégré
DE102009052856B3 (de) * 2009-11-11 2010-09-09 Leistritz Ag Pumpe mit einer Magnetkupplung
CN102844576B (zh) * 2010-03-29 2015-12-02 Ntn株式会社 流体动压轴承装置及其组装方法
CN102465884A (zh) * 2010-11-17 2012-05-23 黄佳华 一种立式磁力驱动料浆泵
TW201317459A (zh) * 2011-10-26 2013-05-01 Assoma Inc 永磁罐裝泵結構改良
US20140271270A1 (en) * 2013-03-12 2014-09-18 Geotek Energy, Llc Magnetically coupled expander pump with axial flow path
DE102013007849A1 (de) * 2013-05-08 2014-11-13 Ksb Aktiengesellschaft Pumpenanordnung
DE102014006568A1 (de) * 2013-05-08 2014-11-13 Ksb Aktiengesellschaft Pumpenanordnung und Verfahren zum Herstellen eines Spalttopfes der Pumpenanordnung
CN104776033B (zh) * 2014-01-14 2017-09-15 高涵文 一种耐腐蚀抗干磨的磁力泵
US9771938B2 (en) 2014-03-11 2017-09-26 Peopleflo Manufacturing, Inc. Rotary device having a radial magnetic coupling
US9920764B2 (en) 2015-09-30 2018-03-20 Peopleflo Manufacturing, Inc. Pump devices
CN110873061B (zh) * 2018-08-29 2023-08-01 广东德昌电机有限公司 泵体及用于泵体的转子组件的制造方法
DE202019101723U1 (de) * 2019-03-26 2020-06-29 Meßner GmbH & Co. KG Teichpumpe
KR102484602B1 (ko) * 2020-11-23 2023-01-06 주식회사 코아비스 전동식 워터 펌프
DE102020132907A1 (de) 2020-12-10 2022-06-15 Eagleburgmann Germany Gmbh & Co. Kg Magnetkupplung mit verbesserter Kühlung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3715484A1 (de) 1987-05-09 1988-11-17 Klaus Union Armaturen Magnetischer pumpenantrieb
US4812108A (en) 1986-09-25 1989-03-14 Seikow Chemical Engineering & Machinery Ltd. Magnet pump
EP0398175A1 (fr) 1989-05-13 1990-11-22 RHEINHÜTTE GMBH & CO. Pompe à entraînement magnétique
US5160246A (en) 1989-11-08 1992-11-03 Sanwa Koki Co., Ltd. Magnetically driven cyntrifical pump

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB922319A (en) * 1960-03-28 1963-03-27 Klaus Franz Centrifugal pump
US3420184A (en) * 1967-05-17 1969-01-07 Julius L Englesberg Pump employing magnetic drive
DE2639540A1 (de) * 1976-09-02 1978-03-09 Grundfos As Gleitlagerhuelse fuer die pumpenwelle von umwaelzpumpen fuer heizungs- und brauchwasseranlagen
DE2752249B2 (de) * 1977-11-23 1979-09-27 Klein, Schanzlin & Becker Ag, 6710 Frankenthal Schutzeinrichtung für Pumpen
DE8717855U1 (de) * 1987-02-14 1990-09-27 Richter Chemie Technik GmbH, 47906 Kempen Leckanzeigevorrichtung für eine Magnetkreiselpumpe
EP0308372B1 (fr) * 1987-09-15 1991-04-03 Bieri Pumpenbau Ag Pompe de circulation, en particulier pour systèmes à eau chaude
US5184945A (en) * 1991-12-27 1993-02-09 Assoma, Inc. Bushing structure for using in magnetically driving centrifugal pumps
DE4212982C2 (de) * 1992-04-18 1996-04-11 Lederle Pumpen & Maschf Pumpe für heiße Fördermedien
DE9316897U1 (de) * 1993-11-04 1994-07-28 Renner GmbH, 75433 Maulbronn Magnetpumpe mit Heißlaufschutz
US5944489A (en) * 1996-12-11 1999-08-31 Crane Co. Rotary fluid pump

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4812108A (en) 1986-09-25 1989-03-14 Seikow Chemical Engineering & Machinery Ltd. Magnet pump
DE3715484A1 (de) 1987-05-09 1988-11-17 Klaus Union Armaturen Magnetischer pumpenantrieb
EP0398175A1 (fr) 1989-05-13 1990-11-22 RHEINHÜTTE GMBH & CO. Pompe à entraînement magnétique
US5160246A (en) 1989-11-08 1992-11-03 Sanwa Koki Co., Ltd. Magnetically driven cyntrifical pump

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011114191A1 (de) 2011-09-22 2013-03-28 Eagleburgmann Germany Gmbh & Co. Kg Spalttopf für eine Magnetkupplung mit verbesserter Fluidströmung
WO2013041161A2 (fr) 2011-09-22 2013-03-28 Eagleburgmann Germany Gmbh & Co. Kg Chemise d'entrefer pour accouplement magnétique à écoulement fluidique amelioré
CN103410739A (zh) * 2013-07-24 2013-11-27 黄佳华 立式液下多组渣浆磁力泵
CN103410739B (zh) * 2013-07-24 2016-09-21 黄佳华 立式液下多组渣浆磁力泵

Also Published As

Publication number Publication date
DE50115684D1 (de) 2010-12-09
ATE356937T1 (de) 2007-04-15
DE50112181D1 (de) 2007-04-26
EP1719914A3 (fr) 2006-11-15
EP1158174B1 (fr) 2007-03-14
EP1158174A3 (fr) 2005-09-07
DE10024953A1 (de) 2001-11-29
US6554576B2 (en) 2003-04-29
ATE486219T1 (de) 2010-11-15
EP1158174A2 (fr) 2001-11-28
EP1719914B1 (fr) 2010-10-27
US20010043865A1 (en) 2001-11-22

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