EP2188534B1 - Laufradbefestigung - Google Patents

Laufradbefestigung Download PDF

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Publication number
EP2188534B1
EP2188534B1 EP08801957.5A EP08801957A EP2188534B1 EP 2188534 B1 EP2188534 B1 EP 2188534B1 EP 08801957 A EP08801957 A EP 08801957A EP 2188534 B1 EP2188534 B1 EP 2188534B1
Authority
EP
European Patent Office
Prior art keywords
shaft
rotor
shaft end
impeller
rotor hub
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.)
Not-in-force
Application number
EP08801957.5A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2188534A1 (de
Inventor
Christoph Jäger
Rolf Witzel
Heinrich Braun
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.)
KSB SE and Co KGaA
Original Assignee
KSB SE and Co KGaA
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 KSB SE and Co KGaA filed Critical KSB SE and Co KGaA
Publication of EP2188534A1 publication Critical patent/EP2188534A1/de
Application granted granted Critical
Publication of EP2188534B1 publication Critical patent/EP2188534B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F04D29/18—Rotors
    • F04D29/20—Mounting rotors on shafts

Definitions

  • the invention relates to an impeller mounting at one end of a shaft, in particular a shaft end of a centrifugal pump assembly, wherein at the shaft end a mating surface and at least one contact surface are formed, wherein an impeller hub is provided at least at its end facing the shaft with a central bore with internal thread and by means of threaded connection on Shaft end is fixed, wherein the shaft has at least at its the wheel hub end facing a central bore with internal thread, wherein a trained as a separate component threaded pin in both center holes connecting, torque and force is arranged.
  • the FR 2 288 888 A2 shows an impeller attachment of a pump by means of a screw with two threaded sections and an intermediate mating surface.
  • the invention is therefore an object of the invention to provide a wheel mounting, which is less expensive to produce, easy assembly and disassembly of the wheel allows and has very good round and flat running properties.
  • the solution to the problem provides that the impeller hub is aligned only on the fitting and contact surfaces on the shaft. This leads to very good concentricity and axial runout properties.
  • the threaded pin acts as a kind of joint, whereby only the mating and contact surfaces ensure concentricity and axial runout accuracy. This also allows operation of such an impeller with very high speeds, which is advantageous for speed-controlled centrifugal pump units.
  • the power transmission or torque transmission is provided solely by the threaded pin, the concentricity of the shaft solely by the centering on the mating surface and the axial runout through the contact surfaces.
  • An embodiment of the invention provides that at the shaft end a cylindrical centering surface and an axial bearing surfaces are formed. On these surfaces is an impeller hub in the assembled state and is thereby aligned with the shaft.
  • an axial extent of the cylindrical centering surface is equal to or greater than the diameter thereof. As a result, a sufficiently large mating surface is created.
  • Another embodiment provides that the central bore of the hub and / or the central bore of the shaft end is designed as a blind hole. Thus, the thread is protected against penetration of pumped liquid.
  • an impeller mounting is provided with a conical surface arranged at one end of a shaft, wherein the shaft has a central bore with internal thread at least at its end facing the impeller hub, connecting a threaded pin designed as a separate component in both central bores, transmitting torque and force and the Impeller hub exclusively on the conical surface, which forms both mating and contact surface, is aligned with the shaft.
  • Such impeller attachment offers advantages in manufacturing due to the reduced number of surfaces to be machined.
  • the threaded pin is provided at least one end with a tool holder. As a result, this can be brought, for example, in a simple manner in its mounting position within the central bore.
  • Fig. 1 shows a section of a centrifugal pump assembly and a wheel mounting according to the prior art. For the sake of clarity, only the relevant parts for a wheel mounting are shown.
  • the shaft end 5 has a cylindrical mating surface 7 and a radial contact surface 8.
  • the impeller 1 is screwed with its impeller hub 2 on the threaded stub 6 of the shaft end 5. Due to manufacturing tolerances, this solution has the disadvantage on that the thread 4 causes during assembly of the impeller hub 2 on the shaft end 5 a tilting of the impeller hub 2 relative to the shaft.
  • the consequences are insufficient concentricity properties and / or run-flat properties of shaft and impeller 1.
  • the Fig. 2 shows an impeller attachment according to the invention.
  • An impeller 11 has an impeller hub 12 with a central bore 13 and an internal thread 14. Furthermore, a shaft end 15 is shown.
  • the shaft end 15 has a hollow shaft 16 with internal thread 17.
  • a threaded pin 18 which is screwed into the central bore 16 during assembly.
  • the tool holder 19 which may be formed, for example, as a hexagon socket, slot or key surface, it can be screwed with conventional tools in the central bore 16.
  • the impeller hub 12 is a cylindrical mating surface 20 for pre-centering. This fitting or centering surface 20 is designed such that good concentricity and during operation of an aggregate good concentricity properties are achieved during assembly.
  • the threaded pin 18 can move loosely and the fit or alignment of the impeller is done only via the designated fitting surface 20 and the contact surface 21st
  • the threaded pin 18 which is arranged to connect in both central bores 13, 16, as a separate component decoupling is achieved within the impeller mounting.
  • the threaded pin 18 fulfills the function of a torque or power transmission.
  • the alignment of the impeller hub takes place exclusively via the mating surface 20 and the contact surface 21.
  • the mating surface 20 ensures the concentricity properties and the contact surface 21 the axial runout properties of the arrangement. This leads to very good concentricity and axial runout properties.
  • the decoupled thread can no longer tilt the wheel to be fastened 11 relative to the shaft. This also allows operation of such an impeller 11 at very high speeds, which is advantageous for speed-controlled centrifugal pump units.
  • the Fig. 3 shows another invention wheel mounting with impeller 31, an impeller hub 32 and a through-drilled through the impeller central bore 33.
  • a shaft end 34 also has a central bore 36.
  • the shaft end 34 is provided with a conical surface 35.
  • the conical surface 35 simultaneously forms investment as well as mating surface and offers the additional advantage of ease of manufacture.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP08801957.5A 2007-09-18 2008-09-10 Laufradbefestigung Not-in-force EP2188534B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007044646A DE102007044646A1 (de) 2007-09-18 2007-09-18 Laufradbefestigung
PCT/EP2008/007385 WO2009036915A1 (de) 2007-09-18 2008-09-10 Laufradbefestigung

Publications (2)

Publication Number Publication Date
EP2188534A1 EP2188534A1 (de) 2010-05-26
EP2188534B1 true EP2188534B1 (de) 2018-04-18

Family

ID=40227714

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08801957.5A Not-in-force EP2188534B1 (de) 2007-09-18 2008-09-10 Laufradbefestigung

Country Status (7)

Country Link
US (1) US8425189B2 (ja)
EP (1) EP2188534B1 (ja)
JP (2) JP5548128B2 (ja)
DE (1) DE102007044646A1 (ja)
DK (1) DK2188534T3 (ja)
ES (1) ES2674083T3 (ja)
WO (1) WO2009036915A1 (ja)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5499701B2 (ja) * 2009-12-25 2014-05-21 株式会社Ｉｈｉ インペラ取付構造及び過給機
DE102010011695B4 (de) 2010-03-17 2013-12-19 Ksb Aktiengesellschaft Laufradbefestigung
KR101681661B1 (ko) * 2012-06-11 2016-12-01 가부시키가이샤 아이에이치아이 터보 기계
GB201221429D0 (en) * 2012-11-28 2013-01-09 Napier Turbochargers Ltd Impeller shaft
WO2014138519A1 (en) * 2013-03-07 2014-09-12 Ti Group Automotive Systems, L.L.C. Coupling element for a screw pump
CN105234623A (zh) * 2015-10-16 2016-01-13 安徽科达埃尔压缩机有限公司 一种用于离心鼓风机的旧轴找轴心方法
CN111989470A (zh) * 2018-05-24 2020-11-24 株式会社Ihi 旋转体以及增压器
CN110242611A (zh) * 2019-05-06 2019-09-17 湖南天尚科技有限公司 一种便于拆装的水泵叶片
DE102019209885B4 (de) * 2019-07-04 2021-06-17 BSH Hausgeräte GmbH Lüfterrad und Haushaltsgerät mit einem solchen Lüfterrad
CN110397621A (zh) * 2019-07-22 2019-11-01 高邮环流泵业有限公司 一种化工反应器用轴流泵叶轮
CN110886704B (zh) * 2019-12-03 2020-12-22 合肥华升泵阀股份有限公司 一种便于安装拆卸操作的泵阀及其工作方法
DE102020127312A1 (de) 2020-10-16 2022-04-21 Ebm-Papst Mulfingen Gmbh & Co. Kg Lüfter mit einem Rotor und einem Lüfterrad
CN113144984B (zh) * 2021-05-20 2023-08-22 上海应用技术大学 一种磁力搅拌装置及反应釜
JP7341537B2 (ja) * 2022-01-20 2023-09-11 日益電機股▲ふん▼有限公司 インナーローターとインペラーの組み合わせ及びマグネットポンプ

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2288888A2 (fr) * 1974-04-26 1976-05-21 Seplec Ste Nouvelle Moteurs Motopompe a liquide, et appareil comportant une telle motopompe
JPS5711298U (ja) * 1980-06-25 1982-01-20

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2010525A (en) * 1934-02-26 1935-08-06 Ingersoll Rand Co Locking device for pump impellers
GB1156678A (en) * 1965-11-24 1969-07-02 Vickers Ltd Improvements in and relating to Marine Propellers
US3717045A (en) * 1971-10-12 1973-02-20 Tsc Ind Inc Tractor power take-off drive for centrifugal pump
US3904301A (en) * 1974-07-24 1975-09-09 Allis Chalmers Hub locking arrangement
GB2039615A (en) 1979-01-06 1980-08-13 Lucas Industries Ltd Turbo pump
JPS5593999A (en) * 1979-01-06 1980-07-16 Lucas Industries Ltd Turbo type pump
KR830002159A (ko) * 1979-03-21 1983-05-23 에이. 더블유. 프리쉬 고속 가스 압축기용 임펠러와 축 조립체
JPS59111997U (ja) * 1983-01-19 1984-07-28 株式会社日立製作所 渦巻ポンプ
JPS6139498U (ja) * 1984-08-17 1986-03-12 株式会社クボタ ポンプ羽根車とポンプ軸との取付け構造
JPS6382095U (ja) * 1986-11-17 1988-05-30
US4810918A (en) * 1987-10-07 1989-03-07 Flint & Walling, Inc. Rotor shaft with corrosion resistant ferrule for pumps motor
AT410827B (de) * 1997-02-14 2003-08-25 Andritz Ag Maschf Pumpenwelle
US6017184A (en) * 1997-08-06 2000-01-25 Allied Signal Inc. Turbocharger integrated bearing system
EP0903465B1 (de) * 1997-09-19 2003-09-03 ABB Turbo Systems AG Verdichterradbefestigung für schnellaufende Turbomaschinen
US6499958B2 (en) * 1999-07-02 2002-12-31 Ingersoll-Rand Company Device and method for detachably connecting an impeller to a pinion shaft in a high speed fluid compressor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2288888A2 (fr) * 1974-04-26 1976-05-21 Seplec Ste Nouvelle Moteurs Motopompe a liquide, et appareil comportant une telle motopompe
JPS5711298U (ja) * 1980-06-25 1982-01-20

Also Published As

Publication number Publication date
DK2188534T3 (en) 2018-07-30
US20100189567A1 (en) 2010-07-29
JP2010539381A (ja) 2010-12-16
JP2013241941A (ja) 2013-12-05
DE102007044646A1 (de) 2009-03-26
WO2009036915A1 (de) 2009-03-26
JP6185778B2 (ja) 2017-08-23
ES2674083T3 (es) 2018-06-27
EP2188534A1 (de) 2010-05-26
US8425189B2 (en) 2013-04-23
JP5548128B2 (ja) 2014-07-16

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