EP0475920A1 - Verstopfungssichere Pumpe - Google Patents

Verstopfungssichere Pumpe Download PDF

Info

Publication number
EP0475920A1
EP0475920A1 EP91850194A EP91850194A EP0475920A1 EP 0475920 A1 EP0475920 A1 EP 0475920A1 EP 91850194 A EP91850194 A EP 91850194A EP 91850194 A EP91850194 A EP 91850194A EP 0475920 A1 EP0475920 A1 EP 0475920A1
Authority
EP
European Patent Office
Prior art keywords
pump
vanes
pump housing
housing
impeller
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
EP91850194A
Other languages
English (en)
French (fr)
Other versions
EP0475920B1 (de
Inventor
Ulf Arbeus
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.)
Xylem Water Solutions AB
Original Assignee
ITT Flygt AB
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=20380333&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0475920(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by ITT Flygt AB filed Critical ITT Flygt AB
Publication of EP0475920A1 publication Critical patent/EP0475920A1/de
Application granted granted Critical
Publication of EP0475920B1 publication Critical patent/EP0475920B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/54—Fluid-guiding means, e.g. diffusers
    • F04D29/548—Specially adapted for liquid pumps
    • 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/445—Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps
    • F04D29/448—Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps bladed diffusers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2240/00—Components
    • F05D2240/10—Stators
    • F05D2240/12—Fluid guiding means, e.g. vanes
    • F05D2240/121—Fluid guiding means, e.g. vanes related to the leading edge of a stator vane

Definitions

  • This invention concerns a rotodynamic pump comprising an impeller rotating in a pump housing.
  • Such pumps may roughly be categorized as centrifugal pumps and axial pumps.
  • the centrifugal pump comprises an impeller consisting of a hub, at least one cover disc on said hub and a number of vanes, a so-called open impeller.
  • a closed impeller is provided with two cover discs and intermediate vanes. Common for the two types is that the liquid is sucked into the centre of the impeller in an axial direction and leaves it tangentially at the periphery.
  • the axial flow pump differs from the centrifugal pump in that the liquid leaves the pump in a substantially axial direction.
  • This linking of the fluid is taken care of by a number of vanes in the pump housing after the impeller. These vanes also normally serve as supporting elements in the housing construction.
  • FIG. 1 stands for an impeller hub provided with vanes 2.
  • 3 stands for a motor unit, 4 an annular channel, 5 pump housing and 6 vanes having leading edges 7 and bulbs 8.
  • the pump operates in the following way:
  • the rotating impeller vanes 2 suck the liquid through the annular channel 4.
  • the leading edge 7 of the vane 6 In order to diminish the risk that fibres and the like will clog on the leading edge 7 of the vane 6, the latter is designed strongly swept backwards, as seen in the direction of the flow, causing the fibres to slip outwards in the direction of the wall 5 of the pump housing where the velocity is the highest.
  • the vane is designed with a bulb 8 having increased thickness towards the wall 6 and with decreasing thickness towards the trailing edge of the vane. In this way the fibres easily slip over the edge of the vane and the bulb has only a slight influence on the flow as a whole.
  • said part In order to prevent solid material from getting stuck in the transition between leading edge 7 and wall 5, said part is designed with a radius and no sharp corners.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Glass Compositions (AREA)
  • Power Steering Mechanism (AREA)
  • Treatment Of Fiber Materials (AREA)
EP91850194A 1990-09-12 1991-08-14 Verstopfungssichere Pumpe Expired - Lifetime EP0475920B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9002898A SE466768B (sv) 1990-09-12 1990-09-12 Igensaettningsfri pump av axialtyp
SE9002898 1990-09-12

Publications (2)

Publication Number Publication Date
EP0475920A1 true EP0475920A1 (de) 1992-03-18
EP0475920B1 EP0475920B1 (de) 1995-07-19

Family

ID=20380333

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91850194A Expired - Lifetime EP0475920B1 (de) 1990-09-12 1991-08-14 Verstopfungssichere Pumpe

Country Status (6)

Country Link
EP (1) EP0475920B1 (de)
JP (1) JPH0730751B2 (de)
AT (1) ATE125335T1 (de)
AU (1) AU645341B2 (de)
DE (1) DE69111345T2 (de)
SE (1) SE466768B (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4314477A1 (de) * 1993-05-03 1994-11-10 Klein Schanzlin & Becker Ag Kreiselpumpe axialer Bauart
EP0651163A1 (de) * 1993-10-28 1995-05-03 KSB Aktiengesellschaft Leitapparat für Kreiselpumpen
DE4433066A1 (de) * 1994-09-16 1996-03-21 Klein Schanzlin & Becker Ag Halbaxiale Einlaufdüsen für Axialpumpen
EP0733805A1 (de) * 1995-03-24 1996-09-25 KSB Aktiengesellschaft Faserabweisende Wandflächengestaltung
US5562405A (en) * 1994-03-10 1996-10-08 Weir Pumps Limited Multistage axial flow pumps and compressors
US5755554A (en) * 1995-12-22 1998-05-26 Weir Pumps Limited Multistage pumps and compressors
WO1998026176A1 (de) * 1996-12-12 1998-06-18 Andreas Keller Wasserturbine oder -pumpe
US9651050B2 (en) 2011-12-13 2017-05-16 Xylem Ip Holdings Llc Propeller pump and pump station

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE475984C (de) * 1928-02-26 1929-05-04 Wilhelm Schulz Dr Ing Schaufelform fuer Propeller- und Schraubenpumpen
US4640666A (en) * 1982-10-11 1987-02-03 International Standard Electric Corporation Centrifugal pump

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE475984C (de) * 1928-02-26 1929-05-04 Wilhelm Schulz Dr Ing Schaufelform fuer Propeller- und Schraubenpumpen
US4640666A (en) * 1982-10-11 1987-02-03 International Standard Electric Corporation Centrifugal pump

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4314477A1 (de) * 1993-05-03 1994-11-10 Klein Schanzlin & Becker Ag Kreiselpumpe axialer Bauart
US5634769A (en) * 1993-10-28 1997-06-03 Ksb Aktiengesellschaft Guide apparatus for centrifugal pumps
EP0651163A1 (de) * 1993-10-28 1995-05-03 KSB Aktiengesellschaft Leitapparat für Kreiselpumpen
US5562405A (en) * 1994-03-10 1996-10-08 Weir Pumps Limited Multistage axial flow pumps and compressors
DE4433066A1 (de) * 1994-09-16 1996-03-21 Klein Schanzlin & Becker Ag Halbaxiale Einlaufdüsen für Axialpumpen
DE4433066C2 (de) * 1994-09-16 2002-08-01 Ksb Ag Halbaxiale Einlaufdüsen für Axialpumpen
EP0733805A1 (de) * 1995-03-24 1996-09-25 KSB Aktiengesellschaft Faserabweisende Wandflächengestaltung
US5785495A (en) * 1995-03-24 1998-07-28 Ksb Aktiengesellschaft Fiber-repellant centrifugal pump
CN1070583C (zh) * 1995-03-24 2001-09-05 Ksb股份公司 回转泵
DE19510811A1 (de) * 1995-03-24 1996-09-26 Klein Schanzlin & Becker Ag Faser abweisende Wandflächengestaltung
US5755554A (en) * 1995-12-22 1998-05-26 Weir Pumps Limited Multistage pumps and compressors
WO1998026176A1 (de) * 1996-12-12 1998-06-18 Andreas Keller Wasserturbine oder -pumpe
US9651050B2 (en) 2011-12-13 2017-05-16 Xylem Ip Holdings Llc Propeller pump and pump station

Also Published As

Publication number Publication date
SE466768B (sv) 1992-03-30
JPH0730751B2 (ja) 1995-04-10
JPH04279795A (ja) 1992-10-05
SE9002898D0 (sv) 1990-09-12
DE69111345D1 (de) 1995-08-24
DE69111345T2 (de) 1996-03-07
EP0475920B1 (de) 1995-07-19
AU8361091A (en) 1992-03-19
AU645341B2 (en) 1994-01-13
ATE125335T1 (de) 1995-08-15
SE9002898A (de) 1992-03-13

Similar Documents

Publication Publication Date Title
US4594052A (en) Centrifugal pump for liquids containing solid material
US3447475A (en) Centrifugal pump
EP0120178B1 (de) Zentrifugalpumpe für feststoffenthaltende Flüssigkeiten
WO1991005168A1 (en) Pump impeller
EP1692397B1 (de) Zentrifugalpumpe
EP0395604B1 (de) Kreiselpumpe
EP1092094B1 (de) Zentrifugalpumpe
EP1815144B1 (de) Laufrad
JP4143184B2 (ja) 下水を輸送するためのポンプに使用される遠心型または半軸流型のポンプ羽根車
EP0475920B1 (de) Verstopfungssichere Pumpe
EP0631055B1 (de) Pumpenlaufrad
US5221182A (en) Vane apparatus for clog resistant pump
EP0512190B1 (de) Weniger leicht verstopfende Pumpe
EP0597815A1 (de) Pumpengehäuse Vorrichtung
EP0530163A1 (de) Nicht-verstopfende Pumpe
US3958895A (en) Pump with shearing means
JP6896595B2 (ja) 汚水用ポンプ
CA2051927C (en) Vane apparatus for clog resistant pump
JPH05321867A (ja) 混流羽根と遠心羽根を一体化した複合インペラー
JPH0514116B2 (de)
AU8236287A (en) Centrifugal pump, particularly for dirty liquids
GB939888A (en) Improvements in or relating to self-priming gas-expelling pumps

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT DE FR GB IT NL

17P Request for examination filed

Effective date: 19920917

17Q First examination report despatched

Effective date: 19941110

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT DE FR GB IT NL

REF Corresponds to:

Ref document number: 125335

Country of ref document: AT

Date of ref document: 19950815

Kind code of ref document: T

REF Corresponds to:

Ref document number: 69111345

Country of ref document: DE

Date of ref document: 19950824

ET Fr: translation filed
ITF It: translation for a ep patent filed
PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

26 Opposition filed

Opponent name: KSB AKTIENGESELLSCHAFT

Effective date: 19960419

NLR1 Nl: opposition has been filed with the epo

Opponent name: KSB AKTIENGESELLSCHAFT

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

PLBO Opposition rejected

Free format text: ORIGINAL CODE: EPIDOS REJO

APAC Appeal dossier modified

Free format text: ORIGINAL CODE: EPIDOS NOAPO

APAE Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOS REFNO

APCC Communication from the board of appeal sent

Free format text: ORIGINAL CODE: EPIDOS OBAPO

APAC Appeal dossier modified

Free format text: ORIGINAL CODE: EPIDOS NOAPO

PLBO Opposition rejected

Free format text: ORIGINAL CODE: EPIDOS REJO

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PLBN Opposition rejected

Free format text: ORIGINAL CODE: 0009273

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: OPPOSITION REJECTED

27O Opposition rejected

Effective date: 20000613

NLR2 Nl: decision of opposition
APAH Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOSCREFNO

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20080813

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20080826

Year of fee payment: 18

Ref country code: IT

Payment date: 20080822

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20080811

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20090827

Year of fee payment: 19

REG Reference to a national code

Ref country code: NL

Ref legal event code: V1

Effective date: 20100301

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20090814

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090814

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100301

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090814

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090814

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20110502

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 69111345

Country of ref document: DE

Effective date: 20110301

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110301

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100831

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20090916

Year of fee payment: 19