EP0192621A1 - Dichtungsanlage - Google Patents
Dichtungsanlage Download PDFInfo
- Publication number
- EP0192621A1 EP0192621A1 EP86850033A EP86850033A EP0192621A1 EP 0192621 A1 EP0192621 A1 EP 0192621A1 EP 86850033 A EP86850033 A EP 86850033A EP 86850033 A EP86850033 A EP 86850033A EP 0192621 A1 EP0192621 A1 EP 0192621A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- impeller
- ring
- rings
- seal
- slot
- 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
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
- 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
Definitions
- This invention concerns a seal device to prevent leakage between an impeller and a non-rotating part.
- the purpose of the invention is thus to replace the wear parts made of rubber by a more resistant matrial which extends the service intervals.
- At least on of the seal rings is attached by help of an O-ring.
- a mechanical seal is thus arranged between the impeller 1 and the housing 2 preventing medium that has passed through the impeller to flow back to the inlet.
- the mechanical seal which has an axial sealing surface, consists of a seal ring 3 attached to the impeller and another ring 4 attached to the housing.
- at least one of the rings 3 is attached by an O-ring.
- a slot 6 is made in the impeller, extending axially along a part of a mantle surface of the impeller. The slot has then such a configuration that it is deeper in the radial direction at'some distance from the opening.
- a sealing is obtained which is very resistant to wear and in addition the O-ring attachment means that the rings are easy to replace and problems due to the seal rings not being sufficiently plain are eliminated.
- a specific advantage occurs if the sealing surface has a radial direction. This means that the demands for tolerances decrease as a sufficient sealing is obtained, even if the rings are somewhat displaced relative each other. This quality is especially important if the pump contains several steps, that is to say several continous impellers on the same shaft.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Mechanical Sealing (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8500691A SE459755B (sv) | 1985-02-14 | 1985-02-14 | Anordning foer att aastadkommma en avtaetning mellan ett roterbart pumphjul och ett omgivande pumphus |
SE8500691 | 1985-02-14 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0192621A1 true EP0192621A1 (de) | 1986-08-27 |
EP0192621B1 EP0192621B1 (de) | 1990-10-24 |
Family
ID=20359116
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP86850033A Expired - Lifetime EP0192621B1 (de) | 1985-02-14 | 1986-02-04 | Dichtungsanlage |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0192621B1 (de) |
JP (1) | JPS61192896A (de) |
AU (1) | AU593534B2 (de) |
DE (1) | DE3675032D1 (de) |
SE (1) | SE459755B (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2315824A (en) * | 1996-07-31 | 1998-02-11 | Framo Developments | Dynamic wear ring |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE142214C (de) * | ||||
US1521226A (en) * | 1921-01-28 | 1924-12-30 | Paul G Bogdanoff | Centrifugal pump |
DE422681C (de) * | 1923-03-21 | 1925-12-09 | Edwin Letts Oliver | Spaltdichtung fuer Turbinen, Pumpen und aehnliche Kreiselmaschinen |
FR2296124A1 (fr) * | 1974-12-24 | 1976-07-23 | Warman Int Ltd | Agencement de coussinet restricteur a centrage automatique |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU476959B2 (en) * | 1973-09-18 | 1976-10-07 | Westinghouse Electric Corporation | Improvements in or relating to rotating element fluid seal for centrifugal compressor |
US4018544A (en) * | 1976-02-20 | 1977-04-19 | Hale Fire Pump Company | Centrifugal pump |
-
1985
- 1985-02-14 SE SE8500691A patent/SE459755B/sv not_active IP Right Cessation
-
1986
- 1986-02-03 AU AU52920/86A patent/AU593534B2/en not_active Ceased
- 1986-02-04 EP EP86850033A patent/EP0192621B1/de not_active Expired - Lifetime
- 1986-02-04 DE DE8686850033T patent/DE3675032D1/de not_active Expired - Fee Related
- 1986-02-14 JP JP61029187A patent/JPS61192896A/ja active Granted
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE142214C (de) * | ||||
US1521226A (en) * | 1921-01-28 | 1924-12-30 | Paul G Bogdanoff | Centrifugal pump |
DE422681C (de) * | 1923-03-21 | 1925-12-09 | Edwin Letts Oliver | Spaltdichtung fuer Turbinen, Pumpen und aehnliche Kreiselmaschinen |
FR2296124A1 (fr) * | 1974-12-24 | 1976-07-23 | Warman Int Ltd | Agencement de coussinet restricteur a centrage automatique |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2315824A (en) * | 1996-07-31 | 1998-02-11 | Framo Developments | Dynamic wear ring |
GB2315824B (en) * | 1996-07-31 | 2000-02-16 | Framo Developments | Dynamic wear ring |
Also Published As
Publication number | Publication date |
---|---|
EP0192621B1 (de) | 1990-10-24 |
SE459755B (sv) | 1989-07-31 |
JPH0217719B2 (de) | 1990-04-23 |
SE8500691L (sv) | 1986-08-15 |
DE3675032D1 (de) | 1990-11-29 |
JPS61192896A (ja) | 1986-08-27 |
AU593534B2 (en) | 1990-02-15 |
AU5292086A (en) | 1986-08-21 |
SE8500691D0 (sv) | 1985-02-14 |
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