EP0244844A2 - Roue à canal pour pompes centrifuges - Google Patents

Roue à canal pour pompes centrifuges Download PDF

Info

Publication number: EP0244844A2
Authority: EP; European Patent Office
Prior art keywords: base body; channel wheel; channel; insert; wheel according
Prior art date: 1986-05-09
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

EP87106548A

Other languages

German (de)

English (en)

Other versions

EP0244844A3 (en

EP0244844B1 (fr

Inventor

Rolf Witzel

Siegfried Kleindienst

Salvatore Scianna

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 AG

Original Assignee

KSB AG

Klein Schanzlin and Becker 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.)

1986-05-09

Filing date

1987-05-06

Publication date

1987-11-11

1987-05-06 Application filed by KSB AG, Klein Schanzlin and Becker AG filed Critical KSB AG

1987-05-06 Priority to AT87106548T priority Critical patent/ATE65300T1/de

1987-11-11 Publication of EP0244844A2 publication Critical patent/EP0244844A2/fr

1988-09-21 Publication of EP0244844A3 publication Critical patent/EP0244844A3/de

1991-07-17 Application granted granted Critical

1991-07-17 Publication of EP0244844B1 publication Critical patent/EP0244844B1/fr

2007-05-06 Anticipated expiration legal-status Critical

Status 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
- F04D29/18—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

Definitions

Channel wheels for centrifugal pumps are used primarily to promote with solid admixtures penetrate liquids, e.g. for pumping domestic wastewater and faeces. They are used in open and closed form, as single and multi-channel wheels.
the type of production and the fact that the channels are sometimes difficult to access for post-processing results in a comparatively poor surface quality of the conveyor channels.
the invention has for its object to provide a channel wheel for centrifugal pumps, which has a high usability with simple manufacture and workability.
the invention solves this problem by means of a channel wheel, which is formed by a base body comprising a pressure-side cover disk and a hub body and one or more flow-guiding insert bodies attached to the base body.
the insert bodies are manufactured independently of the base body to be connected to the shaft of the centrifugal pump, they can be made of a much lighter material than is the case with the cast casters to date. This results in lower circumferential inertia forces and easier balancing, which has a particularly favorable effect in the case of single-channel wheels.
the separate production can also be used for further material savings, since the arrangement of cavities can be realized much easier here.
the interchangeability of the insert bodies to be manufactured with a high surface quality allows a simple performance adjustment.
the main components of the single-channel wheel shown in the drawing are a base body (1) and an insert body (2). While the insert body (2) consists of a one-piece plastic part, the base body (1) is made of several parts that are connected by welding: A pressure-side cover disk (3) is connected to a hub body (4) that is used to attach the single-channel wheel a centrifugal pump shaft, not shown.
the pressure-side cover plate (3) like a suction-side cover plate (5) and its suction mouth (6) and a web (7) connecting the cover plates (3 and 5), are made of sheet steel.
the insert body (2) is inserted radially from the outside into the base body (1) and placed on the web (7).
the base body (1) and the insert body (2) are also fixed in their position relative to one another by means of the fastening of the single-channel wheel on the centrifugal pump shaft by means of screwing.
the base body (1) can also consist of a metallic casting or of plastic.
the flow-carrying insert body (2) which is connected to the base body (1) by screwing, clamping, welding, riveting or gluing, can also be formed from sheet metal, cast or made from a ceramic material. Depending on requirements, its contour can end inside, outside or with the base body (1).

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
General Engineering & Computer Science (AREA)
Structures Of Non-Positive Displacement Pumps (AREA)
Control Of Non-Positive-Displacement Pumps (AREA)
Iron Core Of Rotating Electric Machines (AREA)

EP87106548A 1986-05-09 1987-05-06 Roue à canal pour pompes centrifuges Expired - Lifetime EP0244844B1 (fr)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
AT87106548T ATE65300T1 (de)	1986-05-09	1987-05-06	Kanalrad fuer kreiselpumpen.

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE3615686		1986-05-09
DE19863615686 DE3615686A1 (de)	1986-05-09	1986-05-09	Kanalrad fuer kreiselpumpen

Publications (3)

Publication Number	Publication Date
EP0244844A2 true EP0244844A2 (fr)	1987-11-11
EP0244844A3 EP0244844A3 (en)	1988-09-21
EP0244844B1 EP0244844B1 (fr)	1991-07-17

Family

ID=6300489

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP87106548A Expired - Lifetime EP0244844B1 (fr)	1986-05-09	1987-05-06	Roue à canal pour pompes centrifuges

Country Status (3)

Country	Link
EP (1)	EP0244844B1 (fr)
AT (1)	ATE65300T1 (fr)
DE (2)	DE3615686A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO1991018210A1 (fr) *	1990-05-12	1991-11-28	Ksb Aktiengesellschaft	Roue a aube pour pompes centrifuges
GB2254891A (en) *	1991-03-26	1992-10-21	Biwater Pumps Limited	Single vane impeller.
US5290236A (en) *	1991-09-25	1994-03-01	Baxter International Inc.	Low priming volume centrifugal blood pump
GB2293630A (en) *	1994-09-30	1996-04-03	Klein Schanzlin & Becker Ag	Centrifugal pump impeller for dirty liquids
US5591404A (en) *	1991-09-25	1997-01-07	Mathewson; Wilfred	Integrated low priming volume centrifugal pump and membrane oxygenator
EP1750284A3 (fr) *	2005-08-05	2008-07-09	AREVA NP GmbH	Elément de couverture pour le coeur d'une installation nucléaire et réacteur nucléaire

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE102010026756B4 (de) *	2010-07-09	2012-10-25	Wilo Se	Laufrad einer Kreiselpumpe
DE102019006665A1 (de) *	2019-09-23	2021-03-25	KSB SE & Co. KGaA	Einschaufelrad

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US1305290A (en) *		1919-06-03		krause
GB813133A (en) *	1956-08-09	1959-05-06	Ralph Edgar Smart	Improvements in and relating to pump impellers
US1327812A (en) *	1919-06-06	1920-01-13	American Manganese Steel Co	Sectional shoe for the runner-vanes of centrifugal pumps
US1754992A (en) *	1926-12-06	1930-04-15	American Well Works	Centrifugal pump
DE697787C (de) *	1937-09-03	1940-10-23	Alfred Kath	Verfahren zur Herstellung von Laufraedern fuer Kreem Kunststoff
US2272469A (en) *	1939-12-23	1942-02-10	Chicago Pump Co	Centrifugal pump
US2262039A (en) *	1940-11-01	1941-11-11	Richard B Pekor	Centrifugal pump impeller
US2463581A (en) *	1947-02-05	1949-03-08	William H Welsh	Impeller
US2625884A (en) *	1949-02-23	1953-01-20	William H Welsh	Impeller
DE1034031B (de) *	1956-03-31	1958-07-10	Amag Hilpert Pegnitzhuette A G	Kanalrad, insbesondere Einkanalrad fuer Kreiselpumpen zur Foerderung schlammhaltiger Abwaesser
DE1196506B (de) *	1957-05-28	1965-07-08	Klein Schanzlin & Becker Ag	Kanalrad fuer Kreiselpumpen
US3632220A (en) *	1970-08-27	1972-01-04	Chrysler Corp	Coolant pump
DK131438B (da) *	1973-08-31	1975-07-14	Danske Mejeriers Maskinfabrik	Centrifugalpumpe.
SE426976B (sv) *	1979-04-27	1983-02-21	Flygt Ab	Skovelhjul
GB2102886B (en) *	1981-07-23	1985-06-19	Wickham And Company Limited D	Preventing wear in centrifugal pumps
FI71266C (fi) *	1984-10-23	1990-02-27	Ahlstroem Oy	Saett att belaegga en pumps loephjul.

1986
- 1986-05-09 DE DE19863615686 patent/DE3615686A1/de not_active Withdrawn
1987
- 1987-05-06 EP EP87106548A patent/EP0244844B1/fr not_active Expired - Lifetime
- 1987-05-06 DE DE8787106548T patent/DE3771383D1/de not_active Expired - Lifetime
- 1987-05-06 AT AT87106548T patent/ATE65300T1/de not_active IP Right Cessation

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO1991018210A1 (fr) *	1990-05-12	1991-11-28	Ksb Aktiengesellschaft	Roue a aube pour pompes centrifuges
US5348444A (en) *	1990-05-12	1994-09-20	Ksb Aktiengesellschaft	Single-blade impeller for centrifugal pumps
GB2254891A (en) *	1991-03-26	1992-10-21	Biwater Pumps Limited	Single vane impeller.
US5290236A (en) *	1991-09-25	1994-03-01	Baxter International Inc.	Low priming volume centrifugal blood pump
US5591404A (en) *	1991-09-25	1997-01-07	Mathewson; Wilfred	Integrated low priming volume centrifugal pump and membrane oxygenator
GB2293630A (en) *	1994-09-30	1996-04-03	Klein Schanzlin & Becker Ag	Centrifugal pump impeller for dirty liquids
US5605434A (en) *	1994-09-30	1997-02-25	Ksb Aktiengesellschaft	Impeller having transport elements disposed on a pressure side of a cover disk for a centrifugal pump for dirty liquids
GB2293630B (en) *	1994-09-30	1998-11-04	Klein Schanzlin & Becker Ag	Centrifugal pump impeller for dirty liquids
EP1750284A3 (fr) *	2005-08-05	2008-07-09	AREVA NP GmbH	Elément de couverture pour le coeur d'une installation nucléaire et réacteur nucléaire

Also Published As

Publication number	Publication date
DE3615686A1 (de)	1987-11-12
EP0244844A3 (en)	1988-09-21
EP0244844B1 (fr)	1991-07-17
DE3771383D1 (de)	1991-08-22
ATE65300T1 (de)	1991-08-15

Legal Events

Date	Code	Title	Description
1987-09-26	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
1987-11-11	AK	Designated contracting states	Kind code of ref document: A2 Designated state(s): AT BE CH DE FR GB IT LI LU NL
1988-08-04	PUAL	Search report despatched	Free format text: ORIGINAL CODE: 0009013
1988-09-21	AK	Designated contracting states	Kind code of ref document: A3 Designated state(s): AT BE CH DE FR GB IT LI LU NL
1988-12-07	RAP1	Party data changed (applicant data changed or rights of an application transferred)	Owner name: KSB AKTIENGESELLSCHAFT
1989-03-29	17P	Request for examination filed	Effective date: 19890131
1990-05-02	17Q	First examination report despatched	Effective date: 19900321
1991-05-31	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1991-07-17	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): AT BE CH DE FR GB IT LI LU NL
1991-07-17	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: NL Effective date: 19910717 Ref country code: BE Effective date: 19910717
1991-07-17	REF	Corresponds to:	Ref document number: 65300 Country of ref document: AT Date of ref document: 19910815 Kind code of ref document: T
1991-08-22	REF	Corresponds to:	Ref document number: 3771383 Country of ref document: DE Date of ref document: 19910822
1991-09-11	ITF	It: translation for a ep patent filed
1991-10-18	ET	Fr: translation filed
1991-11-27	GBT	Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
1991-12-16	NLV1	Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
1992-05-06	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: AT Effective date: 19920506
1992-05-23	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1992-05-23	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1992-05-31	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19920531 Ref country code: LI Effective date: 19920531 Ref country code: CH Effective date: 19920531
1992-07-15	26N	No opposition filed
1993-01-29	REG	Reference to a national code	Ref country code: CH Ref legal event code: PL
2000-04-27	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: GB Payment date: 20000427 Year of fee payment: 14
2000-05-15	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: FR Payment date: 20000515 Year of fee payment: 14
2001-05-06	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: 20010506
2002-01-02	GBPC	Gb: european patent ceased through non-payment of renewal fee	Effective date: 20010506
2002-01-31	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020131
2005-05-06	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;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20050506
2006-05-09	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: DE Payment date: 20060509 Year of fee payment: 20

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