SE9400881L - sealing device - Google Patents

sealing device

Info

Publication number
SE9400881L
SE9400881L SE9400881A SE9400881A SE9400881L SE 9400881 L SE9400881 L SE 9400881L SE 9400881 A SE9400881 A SE 9400881A SE 9400881 A SE9400881 A SE 9400881A SE 9400881 L SE9400881 L SE 9400881L
Authority
SE
Sweden
Prior art keywords
pump
impeller
slot
main flow
inlet
Prior art date
Application number
SE9400881A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE502552C2 (en
SE9400881D0 (en
Inventor
Ulf Arbeus
Original Assignee
Flygt Ab Itt
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 Flygt Ab Itt filed Critical Flygt Ab Itt
Priority to SE9400881A priority Critical patent/SE502552C2/en
Publication of SE9400881D0 publication Critical patent/SE9400881D0/en
Priority to DE1995602525 priority patent/DE69502525T2/en
Priority to EP19950850055 priority patent/EP0672832B1/en
Priority to CA 2144692 priority patent/CA2144692C/en
Priority to JP5592495A priority patent/JPH08121384A/en
Publication of SE9400881L publication Critical patent/SE9400881L/en
Publication of SE502552C2 publication Critical patent/SE502552C2/en

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
    • F04D29/08—Sealings
    • F04D29/16—Sealings between pressure and suction sides
    • F04D29/165—Sealings between pressure and suction sides especially adapted for liquid pumps
    • F04D29/167—Sealings between pressure and suction sides especially adapted for liquid pumps of a centrifugal flow wheel

Landscapes

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

Abstract

The invention concerns a device for sealing off the slot between a pump impeller and a pump housing in a centrifugal pump. The inlet part (2) of the pump housing (1) is designed with a collar (2) which concentrically surrounds a corresponding opposite collar formed part (5) of the pump impeller inlet, thus linking any possible leakage flow in parallel with the main flow into the impeller and minimizing the disturbance in the main flow. In order to minimize the leakage flow an O-ring (7) is arranged in front of the opening to the slot (8) between the parts (2) and (5). <IMAGE>
SE9400881A 1994-03-16 1994-03-16 sealing device SE502552C2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
SE9400881A SE502552C2 (en) 1994-03-16 1994-03-16 sealing device
DE1995602525 DE69502525T2 (en) 1994-03-16 1995-03-13 Sealing device for pump impeller
EP19950850055 EP0672832B1 (en) 1994-03-16 1995-03-13 Sealing device for pump impeller
CA 2144692 CA2144692C (en) 1994-03-16 1995-03-15 Sealing device for pump impeller
JP5592495A JPH08121384A (en) 1994-03-16 1995-03-15 Reducing device for back flow

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9400881A SE502552C2 (en) 1994-03-16 1994-03-16 sealing device

Publications (3)

Publication Number Publication Date
SE9400881D0 SE9400881D0 (en) 1994-03-16
SE9400881L true SE9400881L (en) 1995-09-17
SE502552C2 SE502552C2 (en) 1995-11-13

Family

ID=20393295

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9400881A SE502552C2 (en) 1994-03-16 1994-03-16 sealing device

Country Status (5)

Country Link
EP (1) EP0672832B1 (en)
JP (1) JPH08121384A (en)
CA (1) CA2144692C (en)
DE (1) DE69502525T2 (en)
SE (1) SE502552C2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19613486C2 (en) * 1996-04-04 1998-12-24 Grundfos As Formation of seals for centrifugal pumps to reduce the gap leakage current in the suction mouth area of the pump impeller
DE102006024997A1 (en) * 2006-05-30 2007-12-06 Wilo Ag rotary pump
JP2008050958A (en) * 2006-08-23 2008-03-06 Iwaki Co Ltd Self-priming pump
FR2911166B1 (en) * 2007-01-09 2012-08-03 Siebec Soc PUMP WITH MAGNETIC DRIVE AND SLIDING SEAL
JP5046767B2 (en) * 2007-07-19 2012-10-10 日立アプライアンス株式会社 Electric blower and vacuum cleaner provided with the same
CN104235070A (en) * 2013-06-13 2014-12-24 德昌电机(深圳)有限公司 Pump case and pump with same
CN107917100B (en) * 2017-10-26 2019-03-26 珠海格力电器股份有限公司 Connection structure and air conditioner of water conservancy diversion circle and fan impeller front bezel

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3221661A (en) 1961-12-18 1965-12-07 Electronic Specialty Co Low-suction head pumps
US3228343A (en) 1964-05-25 1966-01-11 U S Pumps Inc Self-priming pump
US3741679A (en) * 1971-09-17 1973-06-26 Blue Co John Centrifugal pump
IT1180991B (en) * 1984-06-07 1987-09-23 Lowara Spa SEALING DEVICE INTERPOSED BETWEEN IMPELLER AND PUMP BODY
SU1370318A1 (en) * 1986-06-06 1988-01-30 Всесоюзный Научно-Исследовательский Институт Горной Механики Им.М.М.Федорова Packing of pump impeller
US5295786A (en) 1990-12-27 1994-03-22 Ebara Corporation Liner ring for a pump
US5129795A (en) * 1991-05-31 1992-07-14 Powerdyne Corporation Motor driven pump

Also Published As

Publication number Publication date
JPH08121384A (en) 1996-05-14
SE502552C2 (en) 1995-11-13
SE9400881D0 (en) 1994-03-16
DE69502525T2 (en) 1998-09-17
CA2144692A1 (en) 1995-09-17
EP0672832A1 (en) 1995-09-20
CA2144692C (en) 2000-03-07
DE69502525D1 (en) 1998-06-25
EP0672832B1 (en) 1998-05-20

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Legal Events

Date Code Title Description
NUG Patent has lapsed