EP0075100B2 - Mehrstufige Kreiselpumpe - Google Patents

Mehrstufige Kreiselpumpe Download PDF

Info

Publication number: EP0075100B2
Authority: EP; European Patent Office
Prior art keywords: container; pump; centrifugal pump; housing; inlet
Prior art date: 1981-09-11
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.): Expired

Application number

EP82107260A

Other languages

German (de)

English (en)

French (fr)

Other versions

EP0075100A1 (de

EP0075100B1 (de

Inventor

Wilfried Dr.Ing. Lehmann

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.)

Sihi GmbH and Co KG

Original Assignee

Sihi GmbH and Co KG

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.)

1981-09-11

Filing date

1982-08-11

Publication date

1988-10-12

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6141422&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0075100(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1982-08-11 Application filed by Sihi GmbH and Co KG filed Critical Sihi GmbH and Co KG

1982-08-11 Priority to AT82107260T priority Critical patent/ATE12814T1/de

1983-03-30 Publication of EP0075100A1 publication Critical patent/EP0075100A1/de

1985-04-17 Application granted granted Critical

1985-04-17 Publication of EP0075100B1 publication Critical patent/EP0075100B1/de

1988-10-12 Publication of EP0075100B2 publication Critical patent/EP0075100B2/de

Status Expired 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
- F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D1/06—Multi-stage pumps
- F04D1/063—Multi-stage pumps of the vertically split casing type
- 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
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/708—Suction grids; Strainers; Dust separation; Cleaning specially 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
- F04D9/00—Priming; Preventing vapour lock
- F04D9/02—Self-priming pumps

Definitions

the invention relates to a multi-stage centrifugal pump with a vertical shaft and a multi-member link housing for conveying liquids near their boiling point, which dips with its lower, suction-side end into a pot for the supply of liquid, above which the pump drive and the pressure line connection accessible (DE-A-1 703 529).
a pump for the circulation of a medium under high pressure, which encompasses all pump stages within a pressure-resistant housing, which consists of a pot-like lower part receiving the pump and an upper part receiving the drive Has pump housing which is connected to the pressure-resistant housing by means of an annular flange arranged thereon.
the invention has for its object to provide a centrifugal pump that allows the improvement of the inlet conditions demand of liquids near their boiling point with simple means using series pumps.
the solution according to the invention is that the housing member of the second or a further pump stage is designed with an annular flange as the lid of the pot, on which the inlet nozzle accessible above the pot is arranged.
the ring flange is preferably arranged on the housing member of the last or penultimate stage so that the pump protrudes as deeply as possible into the pot.
Either the inlet connector can be directly connected to the lid (for example welded), or an attachment option for the inlet connector is provided on the lid.
the liquid calming can be improved even further according to the invention by arranging flow guide ribs in the pot, which preferably run away from the pot lid.
the arrangement of flow guide ribs is particularly expedient when the pump is not arranged centrally in the pot.
the distance between the pump inlet and the wall of the pot opposite the pump inlet should be at least equal to the diameter of the pump inlet.
This cover carries the pump 2 with a vertical axis by being designed as a housing member 6 of the third stage of a total of four pump stages.
This design has the advantage that the pump is held in the cover in the simplest manner in such a way that the pump inlet 3 dips relatively deep into the pot.
that of the fourth stage 4 could also be designed as a pot cover if the flange of the pressure port 5 offers sufficient space for it.
this is arranged above the cover 7 and thus above the floor in which the pot 1 is lowered and is therefore freely accessible for assembly and maintenance.
the cover 7 contains a fixed connection to the inlet pipe elbow 8, the connecting flange of which is also above the level of the pot cover 7 lies.
the outlet opening 9 of the nozzle 8 is rounded like a diffuser to reduce the flow losses. In the neighborhood of this outlet opening - but possibly also in other areas of the pot 1 - flow guiding ribs can be provided to calm the conveying medium, one of which is indicated by dash-dotted lines.

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
General Engineering & Computer Science (AREA)
Structures Of Non-Positive Displacement Pumps (AREA)
Applications Or Details Of Rotary Compressors (AREA)
Diaphragms For Electromechanical Transducers (AREA)
Non-Positive Displacement Air Blowers (AREA)

EP82107260A 1981-09-11 1982-08-11 Mehrstufige Kreiselpumpe Expired EP0075100B2 (de)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
AT82107260T ATE12814T1 (de)	1981-09-11	1982-08-11	Mehrstufige kreiselpumpe.

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE19813136116 DE3136116A1 (de)	1981-09-11	1981-09-11	Mehrstufige kreiselpumpe
DE3136116		1981-09-11

Publications (3)

Publication Number	Publication Date
EP0075100A1 EP0075100A1 (de)	1983-03-30
EP0075100B1 EP0075100B1 (de)	1985-04-17
EP0075100B2 true EP0075100B2 (de)	1988-10-12

Family

ID=6141422

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP82107260A Expired EP0075100B2 (de)	1981-09-11	1982-08-11	Mehrstufige Kreiselpumpe

Country Status (9)

Country	Link
EP (1)	EP0075100B2 (da)
AT (1)	ATE12814T1 (da)
AU (1)	AU8750182A (da)
DE (2)	DE3136116A1 (da)
DK (1)	DK405282A (da)
ES (1)	ES276130Y (da)
NO (1)	NO822996L (da)
NZ (1)	NZ201627A (da)
ZA (1)	ZA825936B (da)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN104481889B (zh) *	2014-12-22	2017-01-04	邓伟	一种即开节能立式自吸泵

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE725506C (de) *	1940-01-12	1942-09-23	Wilhelm Beck Dipl Ing	Selbstansaugende Kreiselpumpe
US2514865A (en) *	1945-04-13	1950-07-11	Ingersoll Rand Co	Pumping unit
GB701511A (en) *	1949-11-01	1953-12-30	Hayward Tyler & Co Ltd	Improvements in and relating to pump and motor combinations
FR2044994A5 (da) *	1969-05-29	1971-02-26	Guinard Pompes

1981
- 1981-09-11 DE DE19813136116 patent/DE3136116A1/de not_active Withdrawn
1982
- 1982-08-11 DE DE8282107260T patent/DE3263132D1/de not_active Expired
- 1982-08-11 EP EP82107260A patent/EP0075100B2/de not_active Expired
- 1982-08-11 AT AT82107260T patent/ATE12814T1/de not_active IP Right Cessation
- 1982-08-17 ZA ZA825936A patent/ZA825936B/xx unknown
- 1982-08-18 NZ NZ201627A patent/NZ201627A/en unknown
- 1982-08-23 AU AU87501/82A patent/AU8750182A/en not_active Abandoned
- 1982-09-03 NO NO822996A patent/NO822996L/no unknown
- 1982-09-10 ES ES1982276130U patent/ES276130Y/es not_active Expired
- 1982-09-10 DK DK405282A patent/DK405282A/da not_active Application Discontinuation

Also Published As

Publication number	Publication date
EP0075100A1 (de)	1983-03-30
ZA825936B (en)	1983-07-27
DK405282A (da)	1983-03-12
ES276130Y (es)	1984-12-16
ATE12814T1 (de)	1985-05-15
DE3263132D1 (en)	1985-05-23
AU8750182A (en)	1983-03-17
DE3136116A1 (de)	1983-03-31
NZ201627A (en)	1985-04-30
NO822996L (no)	1983-03-14
EP0075100B1 (de)	1985-04-17
ES276130U (es)	1984-05-01

Legal Events

Date	Code	Title	Description
1983-01-29	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
1983-03-30	AK	Designated contracting states	Designated state(s): AT BE CH DE FR GB IT LI LU NL SE
1983-06-22	17P	Request for examination filed	Effective date: 19830407
1985-01-08	ITF	It: translation for a ep patent filed
1985-02-16	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1985-04-17	AK	Designated contracting states	Designated state(s): AT BE CH DE FR GB IT LI LU NL SE
1985-04-17	REF	Corresponds to:	Ref document number: 12814 Country of ref document: AT Date of ref document: 19850515 Kind code of ref document: T
1985-05-23	REF	Corresponds to:	Ref document number: 3263132 Country of ref document: DE Date of ref document: 19850523
1985-07-05	ET	Fr: translation filed
1985-08-12	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: SE Effective date: 19850812
1985-08-31	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: 19850831 Ref country code: LI Effective date: 19850831 Ref country code: CH Effective date: 19850831
1986-01-23	PLBI	Opposition filed	Free format text: ORIGINAL CODE: 0009260
1986-02-07	PLBI	Opposition filed	Free format text: ORIGINAL CODE: 0009260
1986-03-01	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: NL Effective date: 19860301
1986-03-12	26	Opposition filed	Opponent name: KLEIN, SCHANZLIN & BECKER AG Effective date: 19860116
1986-03-17	NLR1	Nl: opposition has been filed with the epo	Opponent name: KLEIN, SCHANZLIN & BECKER AG
1986-03-26	26	Opposition filed	Opponent name: GRUNDFOS INTERNATIONAL A/S Effective date: 19860117
1986-04-01	NLR1	Nl: opposition has been filed with the epo	Opponent name: GRUNDFOS INTERNATIONAL A/S
1986-04-16	NLV4	Nl: lapsed or anulled due to non-payment of the annual fee
1986-04-30	REG	Reference to a national code	Ref country code: CH Ref legal event code: PL
1986-06-20	REG	Reference to a national code	Ref country code: FR Ref legal event code: ST
1986-10-03	REG	Reference to a national code	Ref country code: FR Ref legal event code: RC
1986-12-12	REG	Reference to a national code	Ref country code: FR Ref legal event code: DA
1987-02-28	BERE	Be: lapsed	Owner name: SIHI G.M.B.H. & CO. K.G. Effective date: 19860831
1987-04-29	GBPC	Gb: european patent ceased through non-payment of renewal fee
1988-08-27	PUAH	Patent maintained in amended form	Free format text: ORIGINAL CODE: 0009272
1988-08-27	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: PATENT MAINTAINED AS AMENDED
1988-10-12	27A	Patent maintained in amended form	Effective date: 19881012
1988-10-12	AK	Designated contracting states	Kind code of ref document: B2 Designated state(s): AT BE CH DE FR GB IT LI LU NL SE
1988-11-21	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: GB Effective date: 19881121
1988-12-14	ITF	It: translation for a ep patent filed
1989-02-03	ET3	Fr: translation filed ** decision concerning opposition
1989-08-31	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: BE Effective date: 19890831
1991-08-31	ITTA	It: last paid annual fee
1995-01-31	EUG	Se: european patent has lapsed	Ref document number: 82107260.0 Effective date: 19860729
1997-10-21	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: DE Payment date: 19971021 Year of fee payment: 16
1998-08-17	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: FR Payment date: 19980817 Year of fee payment: 17
1998-08-21	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: AT Payment date: 19980821 Year of fee payment: 17
1999-06-01	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: 19990601
1999-08-11	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: 19990811
2000-04-28	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: 20000428
2000-07-28	REG	Reference to a national code	Ref country code: FR Ref legal event code: ST

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DE69206082T2 (de)	1996-05-15	Motorkühlungsvorrichtung.
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