SE9400881D0 - sealing device - Google Patents
sealing deviceInfo
- Publication number
- SE9400881D0 SE9400881D0 SE9400881A SE9400881A SE9400881D0 SE 9400881 D0 SE9400881 D0 SE 9400881D0 SE 9400881 A SE9400881 A SE 9400881A SE 9400881 A SE9400881 A SE 9400881A SE 9400881 D0 SE9400881 D0 SE 9400881D0
- Authority
- SE
- Sweden
- Prior art keywords
- pump
- impeller
- slot
- main flow
- inlet
- Prior art date
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>
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 true SE9400881D0 (en) | 1994-03-16 |
SE9400881L 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)
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)
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 |
-
1994
- 1994-03-16 SE SE9400881A patent/SE502552C2/en not_active IP Right Cessation
-
1995
- 1995-03-13 EP EP19950850055 patent/EP0672832B1/en not_active Expired - Lifetime
- 1995-03-13 DE DE1995602525 patent/DE69502525T2/en not_active Expired - Fee Related
- 1995-03-15 JP JP5592495A patent/JPH08121384A/en active Pending
- 1995-03-15 CA CA 2144692 patent/CA2144692C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
SE502552C2 (en) | 1995-11-13 |
JPH08121384A (en) | 1996-05-14 |
CA2144692A1 (en) | 1995-09-17 |
EP0672832A1 (en) | 1995-09-20 |
CA2144692C (en) | 2000-03-07 |
SE9400881L (en) | 1995-09-17 |
DE69502525T2 (en) | 1998-09-17 |
EP0672832B1 (en) | 1998-05-20 |
DE69502525D1 (en) | 1998-06-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NUG | Patent has lapsed |