EP0286954B1 - Selbstsaugende Kreiselpumpe - Google Patents

Selbstsaugende Kreiselpumpe Download PDF

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Publication number
EP0286954B1
EP0286954B1 EP88105434A EP88105434A EP0286954B1 EP 0286954 B1 EP0286954 B1 EP 0286954B1 EP 88105434 A EP88105434 A EP 88105434A EP 88105434 A EP88105434 A EP 88105434A EP 0286954 B1 EP0286954 B1 EP 0286954B1
Authority
EP
European Patent Office
Prior art keywords
rib
centrifugal pump
self
impeller
priming centrifugal
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.)
Expired - Lifetime
Application number
EP88105434A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0286954A2 (de
EP0286954A3 (en
Inventor
Ernst Korthaus
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT88105434T priority Critical patent/ATE83297T1/de
Publication of EP0286954A2 publication Critical patent/EP0286954A2/de
Publication of EP0286954A3 publication Critical patent/EP0286954A3/de
Application granted granted Critical
Publication of EP0286954B1 publication Critical patent/EP0286954B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F04D9/00—Priming; Preventing vapour lock
    • F04D9/004—Priming of not self-priming pumps
    • F04D9/005—Priming of not self-priming pumps by adducting or recycling liquid
    • 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 self-priming centrifugal pump with impeller cell flushing, according to the preamble of claim 1.
  • the centrifugal pump is particularly suitable for pumping dirty water.
  • self-priming centrifugal pumps it is necessary to aspirate the gas cushion contained in the suction line as quickly as possible and to expel it via the pressure line.
  • a self-priming centrifugal pump with a conventionally designed impeller is known from US Pat. No. 2,792,787.
  • the diffuser with its blades directed in the same direction has a new type of special training.
  • the two primary vanes of normal length are arranged opposite each other.
  • the two secondary, elongated guide vanes are assigned two opposing auxiliary guide vanes, following in the direction of rotation of the impeller, which are also greatly elongated and are curved in the same way in the rear 2/3 part.
  • the front end pieces i.e.
  • this auxiliary guide vanes bent outwards, so that these blade parts run at a substantial distance from the periphery of the impeller chamber.
  • the resulting channels to the impeller periphery should serve as suction channels, induction channels, for the water-air mixture. These suction channels cannot generate an induction pulse.
  • the special training and special assignment of the secondary and auxiliary guide vanes only result in a low air intake capacity.
  • the object of the invention is to design a self-priming centrifugal pump of the type mentioned in such a way that the drag effect of the process water on the existing and to be extracted gas volume is increased.
  • the impeller 4 is surrounded by a rotationally symmetrical open guide ring 5 which is formed from two rotating surfaces 7, 7a.
  • the impeller blades 6 are curved backwards in the present example.
  • the guide ring 5 has two pairs of guide ribs 8, 9, one above and one below the impeller axis.
  • the pair of guide ribs 8, 9 consists of the induction rib 8 and the catch rib 9, which are welded onto the rotating surface 7 in the example shown.
  • the induction rib 8 and the catch rib 9 are of different lengths, straight, with their starting points on the line of a secant of the rotating surfaces 7, 7a and at the same distance a from the impeller axis.
  • their starting points are arranged in the form of an isosceles triangle. The starting points of induction rib 8 and catch rib 9 are brought up close to the passing impeller blades.
  • the effect of the induction rib 8 is based on the fact that, due to its special angular adjustment to the passing impeller blade, the operating water rotating in the guide ring is partially returned to the impeller. This allows the water-air mixture in the impeller to suck in more air from the suction nozzle and thus lead to the ventilation of the suction line.
  • the effect of the rib 9 is based on the fact that a part of the water-air mixture thrown back into the guide ring is separated into water and air, the air escapes upwards and the water is brought back into the impeller by the following rib. The separated air is discharged through the pressure port and liquid is quickly conveyed.
  • the impeller 4 which is open on one side, is sealed on the suction side by the rotating surface 7.
  • the surface of rotation 7 can be equipped with an exchangeable wear plate 10 in the central area.
  • the second rotational surface 7a of the guide ring 5 is formed by the housing wall on the drive side.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP88105434A 1987-04-16 1988-04-06 Selbstsaugende Kreiselpumpe Expired - Lifetime EP0286954B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88105434T ATE83297T1 (de) 1987-04-16 1988-04-06 Selbstsaugende kreiselpumpe.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3712916 1987-04-16
DE19873712916 DE3712916A1 (de) 1987-04-16 1987-04-16 Selbstsaugende kreiselpumpe

Publications (3)

Publication Number Publication Date
EP0286954A2 EP0286954A2 (de) 1988-10-19
EP0286954A3 EP0286954A3 (en) 1989-01-11
EP0286954B1 true EP0286954B1 (de) 1992-12-09

Family

ID=6325756

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88105434A Expired - Lifetime EP0286954B1 (de) 1987-04-16 1988-04-06 Selbstsaugende Kreiselpumpe

Country Status (7)

Country Link
US (1) US4844687A (uk)
EP (1) EP0286954B1 (uk)
JP (1) JPS63277886A (uk)
AT (1) ATE83297T1 (uk)
DE (2) DE3712916A1 (uk)
ES (1) ES2037123T3 (uk)
IN (1) IN171114B (uk)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102913484A (zh) * 2012-10-31 2013-02-06 遵义海立水泵制造有限责任公司 一种泵顶涡壳

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2533191Y2 (ja) * 1991-03-22 1997-04-23 新明和工業株式会社 ポンプ装置
DE4309479A1 (de) * 1993-03-24 1994-09-29 Wilo Gmbh Radialkreiselpumpe
DE9317443U1 (de) * 1993-11-15 1994-01-13 Duewag Ag, 47829 Krefeld Wasserversorgungsanlage, insbesondere für Gastronomiewagen von Reisezügen
US6471476B1 (en) 2000-11-13 2002-10-29 Wacker Corporation Centrifugal trash pump
US7197885B2 (en) * 2004-09-30 2007-04-03 Valeo Climate Control Corp Water separator with ribs
JP4861289B2 (ja) * 2004-10-27 2012-01-25 パナソニック株式会社 空気調和機用ファンユニット
PL1873399T3 (pl) * 2006-06-29 2013-06-28 Grundfos Management As Agregat z pompą odśrodkową
CN103133353B (zh) * 2013-03-12 2015-05-06 孙九江 自吸式离心泵
JP2021181764A (ja) * 2020-05-19 2021-11-25 株式会社荏原製作所 ポンプ

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE673662C (de) * 1937-02-27 1939-03-25 Fedor Werner Selbstansaugende Fliehkraftpumpe
US2247817A (en) * 1938-04-30 1941-07-01 Gen Electric Centrifugal pump
US2461925A (en) * 1946-09-05 1949-02-15 Gorman Rupp Co Self-priming centrifugal pump
DE959969C (de) * 1951-05-16 1957-03-14 Georg Volland Dr Ing Selbstansaugende Kreiselpumpe
US2792787A (en) * 1953-03-03 1957-05-21 Mcculloch Motors Corp Pumping device
US2945448A (en) * 1957-02-15 1960-07-19 Bell & Gossett Co Universal centrifugal pump
GB856886A (en) * 1957-07-30 1960-12-21 Bell & Gossett Co Centrifugal pump
GB974971A (en) * 1959-12-03 1964-11-11 J H Carruthers & Company Ltd A rotary gas pump
US3103177A (en) * 1961-07-20 1963-09-10 Bell & Gossett Co Self-priming centrifugal pump
US3506374A (en) * 1968-06-04 1970-04-14 Decatur Pump Co Self-priming pump
US3873231A (en) * 1972-08-11 1975-03-25 Allis Chalmers Centrifugal pump diffuser
DE7534163U (de) * 1975-10-28 1976-03-11 Grabbe, Friedbert, Ing.(Grad.), 4300 Essen Kreiselpumpe zur foerderung von mit gasen vermischten fluessigkeiten
FR2405083A1 (fr) * 1977-10-04 1979-05-04 Ideal Standard Separateur liquide-air pour applications diverses et notamment pour pompe centrifuge
YU41671B (en) * 1979-10-22 1987-12-31 Tozd Tovarna Motorjev Tomos Self suction centrifugal pump
SU987189A1 (ru) * 1981-05-19 1983-01-07 Предприятие П/Я В-8319 Лопастной насос
DE3539883A1 (de) * 1985-09-18 1987-03-26 Hermetic Pumpen Gmbh Selbstansaugende kreiselpumpe
DE8705619U1 (de) * 1987-04-16 1987-07-16 Korthaus, Ernst, Dipl.-Ing., 5982 Neuenrade Selbstsaugende Kreiselpumpe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102913484A (zh) * 2012-10-31 2013-02-06 遵义海立水泵制造有限责任公司 一种泵顶涡壳

Also Published As

Publication number Publication date
JPS63277886A (ja) 1988-11-15
DE3712916C2 (uk) 1989-11-30
EP0286954A2 (de) 1988-10-19
EP0286954A3 (en) 1989-01-11
DE3876476D1 (de) 1993-01-21
DE3712916A1 (de) 1988-11-03
IN171114B (uk) 1992-07-25
US4844687A (en) 1989-07-04
ATE83297T1 (de) 1992-12-15
ES2037123T3 (es) 1993-06-16

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