ES2038030T3 - CENTRIFUGAL PUMP FOR THE TRANSPORT OF LIQUIDS AT HIGH TEMPERATURE. - Google Patents
CENTRIFUGAL PUMP FOR THE TRANSPORT OF LIQUIDS AT HIGH TEMPERATURE.Info
- Publication number
- ES2038030T3 ES2038030T3 ES199090121433T ES90121433T ES2038030T3 ES 2038030 T3 ES2038030 T3 ES 2038030T3 ES 199090121433 T ES199090121433 T ES 199090121433T ES 90121433 T ES90121433 T ES 90121433T ES 2038030 T3 ES2038030 T3 ES 2038030T3
- Authority
- ES
- Spain
- Prior art keywords
- chamber
- seal
- pump
- face
- face seal
- 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
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
- F04D29/10—Shaft sealings
- F04D29/12—Shaft sealings using sealing-rings
- F04D29/126—Shaft sealings using sealing-rings especially adapted for liquid pumps
- F04D29/128—Shaft sealings using sealing-rings especially adapted for liquid pumps with special means for adducting cooling or sealing fluid
Abstract
Centrifugal pump, especially for pumping hot liquids, with at least one shaft passage to the outside through the pump housing and sealing of the shaft passage by means of a face seal (14, 15) and a scavenging and cooling flow for the face seal derived from the pumped medium. This flow is drawn from a higher pressure chamber, the pressure chamber (3), spiral chamber (6) or spiral side chamber (7) of the pump and led through at least one duct (8) provided in a housing cover (10) to an annular gap (13) formed between the housing cover (10) and an intermediate housing (11) inserted from the impeller wheel side into the housing cover, and from this close to the sealing face of the face seal (14, 15) into the seal chamber containing the face seal. After flowing through the seal chamber (16) the flow is fed via a choke gap to a low pressure chamber of the pump. In order to improve the scavenging and cooling effect it is proposed, according to the invention, that between the duct (8) and the annular gap (13) a distribution annulus be arranged, the width of which is a multiple of the annular gap (13) directed with radial direction components at the sealing face area of the face seal (14, 15) and that the pressure drop in the choke gap (17) be many times greater than the pressure drop from the higher pressure chamber (7) to the seal chamber (14).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3914652A DE3914652A1 (en) | 1989-05-03 | 1989-05-03 | CENTRIFUGAL PUMP |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2038030T3 true ES2038030T3 (en) | 1993-07-01 |
Family
ID=6380039
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES199090121433T Expired - Lifetime ES2038030T3 (en) | 1989-05-03 | 1990-11-08 | CENTRIFUGAL PUMP FOR THE TRANSPORT OF LIQUIDS AT HIGH TEMPERATURE. |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0484582B1 (en) |
AT (1) | ATE85106T1 (en) |
DE (2) | DE3914652A1 (en) |
ES (1) | ES2038030T3 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3914652A1 (en) * | 1989-05-03 | 1990-11-08 | Sihi Gmbh & Co Kg | CENTRIFUGAL PUMP |
GB2290113B (en) * | 1994-05-31 | 1998-07-15 | Ingersoll Dresser Pump Co | Centrifugal pump |
GB2390398B (en) * | 1999-03-30 | 2004-02-25 | Concentric Pumps Ltd | Improvements in pumps |
GB9907372D0 (en) * | 1999-03-30 | 1999-05-26 | Concentric Pumps Ltd | Improvements in pumps |
DE102006004266A1 (en) * | 2006-01-31 | 2007-08-02 | Wilo Ag | rotary pump |
EP2129919A1 (en) * | 2007-04-05 | 2009-12-09 | Weir Minerals Australia Ltd | Air diffuser system for industrial pumps |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1400545A1 (en) * | 1961-12-22 | 1969-11-13 | Wernert Geb Schaafhausen | Mechanical seal for rotating shafts in centrifugal pumps |
GB1120231A (en) * | 1964-07-08 | 1968-07-17 | Worthington Simpson | Rotary pumps |
DE1528677A1 (en) * | 1965-06-11 | 1969-10-16 | Itt Ind Gmbh Deutsche | Centrifugal pump |
DE3438662C2 (en) * | 1984-10-22 | 1997-01-30 | Sihi Gmbh & Co Kg | Centrifugal pump for hot media |
US4621975A (en) * | 1984-10-25 | 1986-11-11 | Graco Inc. | Centrifugal pump seal |
DE8601166U1 (en) * | 1986-01-18 | 1986-02-27 | Sihi Gmbh & Co Kg, 2210 Itzehoe | Pump for pumping hot water |
DE3843429A1 (en) * | 1988-12-23 | 1990-06-28 | Klein Schanzlin & Becker Ag | SHAFT SEALING ON FLOWING MACHINES |
DE3914652A1 (en) * | 1989-05-03 | 1990-11-08 | Sihi Gmbh & Co Kg | CENTRIFUGAL PUMP |
-
1989
- 1989-05-03 DE DE3914652A patent/DE3914652A1/en not_active Withdrawn
-
1990
- 1990-11-08 DE DE9090121433T patent/DE59000825D1/en not_active Expired - Fee Related
- 1990-11-08 AT AT90121433T patent/ATE85106T1/en not_active IP Right Cessation
- 1990-11-08 EP EP90121433A patent/EP0484582B1/en not_active Expired - Lifetime
- 1990-11-08 ES ES199090121433T patent/ES2038030T3/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE3914652A1 (en) | 1990-11-08 |
ATE85106T1 (en) | 1993-02-15 |
EP0484582B1 (en) | 1993-01-27 |
EP0484582A1 (en) | 1992-05-13 |
DE59000825D1 (en) | 1993-03-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG2A | Definitive protection |
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