EP0715691A1 - Kreiselpumpe mit drehmomentkompensation - Google Patents

Kreiselpumpe mit drehmomentkompensation

Info

Publication number
EP0715691A1
EP0715691A1 EP94925659A EP94925659A EP0715691A1 EP 0715691 A1 EP0715691 A1 EP 0715691A1 EP 94925659 A EP94925659 A EP 94925659A EP 94925659 A EP94925659 A EP 94925659A EP 0715691 A1 EP0715691 A1 EP 0715691A1
Authority
EP
European Patent Office
Prior art keywords
pump
hose
impeller
torque
hoses
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
EP94925659A
Other languages
English (en)
French (fr)
Other versions
EP0715691B1 (de
Inventor
Bengt Olsson
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
Publication of EP0715691A1 publication Critical patent/EP0715691A1/de
Application granted granted Critical
Publication of EP0715691B1 publication Critical patent/EP0715691B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • F04D29/406—Casings; Connections of working fluid especially 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
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/04—Units comprising pumps and their driving means the pump being fluid driven
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
    • F04D13/086—Units comprising pumps and their driving means the pump being electrically driven for submerged use the pump and drive motor are both submerged

Definitions

  • Fig. 1 which shows the pump from the suction (inlet) side when operating lightly loaded
  • Fig. 2 which shows the pump in the same view as Fig. 1 when operating at a heavier, continuous load
  • Fig. 3 which shows the pump in the same view as Figs. 1 and 2, but in a version designed especially for heavy load
  • Fig. 4 which shows the pump in a schematic view at 90° to Figs. 1, 2 and 3.
  • Simple centrifugal pumps driven by submersible electric or hydraulic motors mounted more or less directly on the pump housing are already known. These pumps suffer from the disadvantage of a reaction moment about the impeller axis, which tends to swing the entire pump housing in the opposite direction to impeller rotation, often making it necessary to make fast the pump to the bottom or side walls of the pit, or to use a rigid, torque-resistant iron pipe or similar component as discharge line, and to make fast this line.
  • a readily flexible component i.e. a hose
  • the purpose of the present invention is to achieve a submersible centrifugal pump in which the reaction moment on the pump housing is accommodated in a manner allowing the pump to operate freely suspended from a hose in the liquid to be pumped, the hose preferably serving also as flow discharge line from the pump.
  • This is achieved by arranging the pump impeller (1), Fig. 1, to operate vertically submerged in the liquid with its shaft entering the motor (5), Fig. 4, horizontally, and by connecting the hose (4), Fig.
  • the pump housing (2), Fig. 3 may suitably be provided with a rigid outlet section (7) which is longer than that required to connect the hose (4) securely by means of a hose clip.
  • This outlet section may consist, for example, of a welded-on iron pipe, to which the hose (4) is connected essentially above the centre of the pump impeller.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP94925659A 1993-08-25 1994-08-16 Kreiselpumpe mit drehmomentkompensation Expired - Lifetime EP0715691B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9302739 1993-08-25
SE9302739A SE503575C2 (sv) 1993-08-25 1993-08-25 Vridmomentskompenserad centrifugalpump
PCT/SE1994/000744 WO1995006206A1 (en) 1993-08-25 1994-08-16 Torque-compensated centrifugal pump

Publications (2)

Publication Number Publication Date
EP0715691A1 true EP0715691A1 (de) 1996-06-12
EP0715691B1 EP0715691B1 (de) 1999-12-01

Family

ID=20390875

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94925659A Expired - Lifetime EP0715691B1 (de) 1993-08-25 1994-08-16 Kreiselpumpe mit drehmomentkompensation

Country Status (5)

Country Link
EP (1) EP0715691B1 (de)
DE (1) DE69421931T2 (de)
DK (1) DK0715691T3 (de)
SE (1) SE503575C2 (de)
WO (1) WO1995006206A1 (de)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI54185C (fi) * 1976-05-04 1978-10-10 Sarlin Ab Oy E Fiskpump

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9506206A1 *

Also Published As

Publication number Publication date
SE9302739D0 (sv) 1993-08-25
SE503575C2 (sv) 1996-07-08
EP0715691B1 (de) 1999-12-01
DE69421931D1 (de) 2000-01-05
WO1995006206A1 (en) 1995-03-02
DK0715691T3 (da) 2000-05-08
SE9302739L (sv) 1995-02-26
DE69421931T2 (de) 2000-11-02

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