EP0750119A1 - Rouet de pompe - Google Patents

Rouet de pompe Download PDF

Info

Publication number: EP0750119A1
Authority: EP; European Patent Office
Prior art keywords: impeller; blade; pump; blades; thickening
Prior art date: 1995-06-19
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

EP95117565A

Other languages

German (de)

English (en)

Other versions

EP0750119B1 (fr

Inventor

Manfred Zelder

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.)

Wilo GmbH

Original Assignee

Wilo 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.)

1995-06-19

Filing date

1995-11-08

Publication date

1996-12-27

1995-11-08 Application filed by Wilo GmbH filed Critical Wilo GmbH

1996-12-27 Publication of EP0750119A1 publication Critical patent/EP0750119A1/fr

2000-05-10 Application granted granted Critical

2000-05-10 Publication of EP0750119B1 publication Critical patent/EP0750119B1/fr

2015-11-08 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

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
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2238—Special flow patterns
- F04D29/225—Channel wheels, e.g. one blade or one flow channel
- 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
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/24—Vanes
- F04D29/242—Geometry, shape
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2225/00—Synthetic polymers, e.g. plastics; Rubber

Definitions

the invention relates to a pump impeller of a radial centrifugal pump, in particular a submersible motor pump with two curved blades, which are fixed to a disc close to the impeller hub, the two blades projecting freely into the pump chamber on the suction side without being fixed to another impeller disc (half-open impeller) .
the object of the invention is to improve the blockage of a radial centrifugal pump of the type mentioned in the introduction with a simple construction.
this object is achieved in that the initial area of the blade impinging on the liquid, in particular the leading edge of one of the two blades, has a greater thickness than the initial area of the second blade.
the impeller according to the invention does not buy the two-bladed design with an increased risk of clogging, but this quietly working impeller is similarly low in clogging as a single-bladed one.
the thickening of the initial region of the first blade is arranged on the side of the blade facing away from the impeller axis.
the thickening should also pass into the front curve of the front edge of the blade.
a reduction in the unbalance is achieved in that the unbalance generated by the thickening is eliminated by a reduction in mass on the same impeller side or by an increase in mass on the opposite impeller side. It is also an advantage if the impeller is made of plastic.
the impeller 1 of a radial centrifugal pump which can be used as a submersible pump, has a circular disk 2, on the rear of which a hub 3 is coaxially formed, in which a bushing 4 can be cast in order to fasten the impeller to the shaft of an electric motor.
the blades 5 and 6 are formed in a rotationally symmetrical manner opposite one another on the plastic disk 2 and taper in their thickness D towards the pump inlet side.
the impeller shown in Figure 1 rotates in the direction of arrow 7 so that the blade leading edges 5a and 6a first meet the liquid to be conveyed.
These blade leading edges together with an adjoining area are referred to as blade start areas 5b, 6b. While outside the blade start areas 5b, 6b the two blades 5, 6 are identical, there is a difference in these blade start areas:
the thickness D1 of the blade beginning area 5b is greater than the thickness D2 of the blade starting area 6b, the second blade 6.
the additional thickening of the starting area 5b of the first blade 5 is open molded on the side of the blade facing away from the impeller axis 8.
the thickness D 1 is only slightly larger than the thickness D2 (0.1-4mm or 5-40% larger than D2), the effect is considerable for greater freedom from clogging.
the length of the thickened blade start area 5b is 1/20 to 1/4 of the total length of the first blade 5.
the thickening merges with the curve at the front edge 5a of the blade, so that the first blade 5 has the same aerodynamic shape as the second blade 6.
the impeller In order to compensate for the imbalance caused by the thickening, the impeller has a reduction in mass on the side of FIG. 5 or an increase in mass on the opposite side.

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
General Engineering & Computer Science (AREA)
Physics & Mathematics (AREA)
Geometry (AREA)
Structures Of Non-Positive Displacement Pumps (AREA)

EP95117565A 1995-06-19 1995-11-08 Rouet de pompe Expired - Lifetime EP0750119B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE19521768		1995-06-19
DE19521768A DE19521768A1 (de)	1995-06-19	1995-06-19	Pumpenlaufrad

Publications (2)

Publication Number	Publication Date
EP0750119A1 true EP0750119A1 (fr)	1996-12-27
EP0750119B1 EP0750119B1 (fr)	2000-05-10

Family

ID=7764431

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP95117565A Expired - Lifetime EP0750119B1 (fr)	1995-06-19	1995-11-08	Rouet de pompe

Country Status (3)

Country	Link
US (1)	US5692880A (fr)
EP (1)	EP0750119B1 (fr)
DE (2)	DE19521768A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2014029790A1 (fr) *	2012-08-23	2014-02-27	Sulzer Pumpen Ag	Pompe permettant de refouler des eaux usées ainsi que roue à aubes et plaque de fond pour une telle pompe

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
ES2195733B1 (es) *	2001-07-20	2005-08-16	Fagor, S.Coop.	Bomba hidraulica con guiador de flujo.
US6979174B2 (en) *	2003-10-01	2005-12-27	Schlumberger Technology Corporation	Stage pump having composite components
JP4554189B2 (ja) *	2003-11-26	2010-09-29	株式会社エンプラス	遠心式羽根車
US7544042B2 (en) *	2006-01-03	2009-06-09	Emerson Electric Co.	Insert with sleeve for a molded impeller
DE102011007907B3 (de) *	2011-04-21	2012-06-21	Ksb Aktiengesellschaft	Laufrad für Kreiselpumpen
CN103216452B (zh) *	2013-04-25	2016-05-11	常州雷利电机科技有限公司	排水泵
JP6488167B2 (ja) *	2015-03-27	2019-03-20	株式会社荏原製作所	渦巻ポンプ
AU201614369S (en) *	2016-08-12	2016-10-27	Weir Minerals Australia Ltd	Impeller
USD810788S1 (en) *	2016-08-25	2018-02-20	Weir Minerals Australia Ltd.	Pump impeller
USD810789S1 (en) *	2016-08-25	2018-02-20	Weir Minerals Australia Ltd.	Pump impeller
DE102017221930A1 (de) *	2017-12-05	2019-06-06	KSB SE & Co. KGaA	Laufrad für Abwasserpumpe

Citations (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US1864834A (en) *	1927-12-28	1932-06-28	Buffalo Steam Pump Company	Centrifugal pump impeller
US1959710A (en) *	1931-09-21	1934-05-22	Chicago Pump Co	Pump
US4063849A (en) *	1975-02-12	1977-12-20	Modianos Doan D	Non-clogging, centrifugal, coaxial discharge pump
GB2053368A (en) *	1979-06-22	1981-02-04	Klein Schanzlin & Becker Ag	An open impeller for a centrifugal pump
JPS61252893A (ja) *	1985-05-02	1986-11-10	Hitachi Ltd	汚水汚物ポンプ
EP0640768A1 (fr) *	1993-08-24	1995-03-01	KSB Aktiengesellschaft	Rouet à canal unique pour pompes centrifuges

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US553956A (en) *		1896-02-04		Explosive valve for blast-furnaces
US1754992A (en) *	1926-12-06	1930-04-15	American Well Works	Centrifugal pump
US2265758A (en) *	1940-05-29	1941-12-09	Buffalo Pumps Inc	Pump
US4087994A (en) *	1976-09-07	1978-05-09	The Maytag Company	Centrifugal pump with means for precluding airlock
US4293280A (en) *	1980-08-27	1981-10-06	The United States Of America As Represented By The Secretary Of The Navy	Transcavitating propeller
US4681508A (en) *	1984-11-14	1987-07-21	Kim Choong W	Supercavitation centrifugal pump

1995
- 1995-06-19 DE DE19521768A patent/DE19521768A1/de not_active Withdrawn
- 1995-11-08 EP EP95117565A patent/EP0750119B1/fr not_active Expired - Lifetime
- 1995-11-08 DE DE59508322T patent/DE59508322D1/de not_active Expired - Lifetime
1996
- 1996-06-13 US US08/662,945 patent/US5692880A/en not_active Expired - Fee Related

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US1864834A (en) *	1927-12-28	1932-06-28	Buffalo Steam Pump Company	Centrifugal pump impeller
US1959710A (en) *	1931-09-21	1934-05-22	Chicago Pump Co	Pump
US4063849A (en) *	1975-02-12	1977-12-20	Modianos Doan D	Non-clogging, centrifugal, coaxial discharge pump
GB2053368A (en) *	1979-06-22	1981-02-04	Klein Schanzlin & Becker Ag	An open impeller for a centrifugal pump
JPS61252893A (ja) *	1985-05-02	1986-11-10	Hitachi Ltd	汚水汚物ポンプ
EP0640768A1 (fr) *	1993-08-24	1995-03-01	KSB Aktiengesellschaft	Rouet à canal unique pour pompes centrifuges

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 011, no. 105 (M - 577) 3 April 1987 (1987-04-03) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2014029790A1 (fr) *	2012-08-23	2014-02-27	Sulzer Pumpen Ag	Pompe permettant de refouler des eaux usées ainsi que roue à aubes et plaque de fond pour une telle pompe
US10495092B2 (en)	2012-08-23	2019-12-03	Sulzer Management Ag	Pump for conveying waste water as well as impeller and base plate for such a pump

Also Published As

Publication number	Publication date
DE59508322D1 (de)	2000-06-15
DE19521768A1 (de)	1997-01-02
US5692880A (en)	1997-12-02
EP0750119B1 (fr)	2000-05-10

Publication	Publication Date	Title
EP0750119A1 (fr)	1996-12-27	Rouet de pompe
DE4006604A1 (de)	1990-10-04	Vorrichtung zum fluidisieren, entgasen und pumpen einer zellulosefasermaterialsuspension
EP0623752B1 (fr)	1998-09-09	Rouet de pompe centrifuge
EP0459497A2 (fr)	1991-12-04	Ventilateur hélicoide avec boîtier cylindrique
EP0733805A1 (fr)	1996-09-25	Forme de paroi empêchant le dépÔt de fibres
DE3147513C3 (fr)	1992-01-30
DE69106179T2 (de)	1995-07-27	Diagonal-Verdichter.
EP3922855A1 (fr)	2021-12-15	Roue pour une pompe centrifuge
DE69210718T2 (de)	1996-10-02	Nicht-verstopfende Pumpe
WO2018114143A1 (fr)	2018-06-28	Pompe non colmatable
EP0449861A1 (fr)	1991-10-09	Rotor de pompe centrifuge a vitesse specifique reduite.
EP1344944B1 (fr)	2004-06-02	Pompe centrifuge avec un dispositif de broyage
DE69111345T2 (de)	1996-03-07	Verstopfungssichere Pumpe.
EP0463385B1 (fr)	1996-08-14	Roue pour ventilateur
DE3340295A1 (de)	1985-05-15	Pumpe zum foerdern von mit stueckigen verunreinigungen durchsetzten fluessigkeiten
CH649135A5 (de)	1985-04-30	Kleingeblaese mit sich erweiterndem, ringfoermigem schaufelkanal.
EP0640768B1 (fr)	1998-01-28	Rouet à canal unique pour pompes centrifuges
EP0733808A1 (fr)	1996-09-25	Pompe centrifuge
EP0623750B1 (fr)	1998-07-29	Pompe du type à écoulement axial
DE3028775A1 (de)	1981-03-26	Diffusor fuer fliehkraft-arbeitsmaschine
DE19521759C2 (de)	2003-10-30	Laufrad einer Radialkreiselpumpe
EP1327781A2 (fr)	2003-07-16	Pompe centrifuge auto-amorçante
DE4128535C2 (de)	1997-07-10	Kreiselpumpe für Scheibenwaschanlagen von Kraftfahrzeugen
DE1191231B (de)	1965-04-15	Rotierende Verdraengerpumpe
DE69125364T2 (de)	1997-07-17	Weniger leicht verstopfende Pumpe

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