GB976114A - Self priming centrifugal pump - Google Patents
Self priming centrifugal pumpInfo
- Publication number
- GB976114A GB976114A GB27228/62A GB2722862A GB976114A GB 976114 A GB976114 A GB 976114A GB 27228/62 A GB27228/62 A GB 27228/62A GB 2722862 A GB2722862 A GB 2722862A GB 976114 A GB976114 A GB 976114A
- Authority
- GB
- United Kingdom
- Prior art keywords
- impeller
- periphery
- vanes
- vane
- diffuser
- 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
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
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/445—Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps
- F04D29/448—Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps bladed diffusers
-
- 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
- F04D29/02—Selection of particular materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D9/00—Priming; Preventing vapour lock
- F04D9/004—Priming of not self-priming pumps
- F04D9/005—Priming of not self-priming pumps by adducting or recycling liquid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D9/00—Priming; Preventing vapour lock
- F04D9/02—Self-priming pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2250/00—Geometry
- F05D2250/50—Inlet or outlet
- F05D2250/52—Outlet
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
976,114. Centrifugal pumps. BELL & GOSSETT CO. July 16, 1962 [July 20, 1961], No. 27228/62. Heading F1C. A self priming centrifugal pump having an impeller 22 supported about a substantially horizontal axis in a casing 10 which defines a main chamber 21 for a reserve of liquid in which the impeller 22 is rotatable, an inlet 12 communicating centrally with the impeller and an outlet 11, and a number of vanes 31-37 spaced about the periphery of the impeller and spiraling forwardly in the direction of impeller rotation and outwardly to define discharge flow passages communicating between the main chamber 21 and the periphery of the impeller, is characterized in that at least one vane with its inner edge originating adjacent the lower downward sweep region of the impeller periphery has its inner end located in such position relative to an outer end portion of an adjacent preceding vane to provide therebetween a reverse flow path from the main chamber 21 to the impeller periphery that is shorter and more direct than any reverse flow path associated with vanes having inner end portions originating adjacent the other regions swept by the impeller periphery. Vanes 31, 32, of a fixed diffuser 30 having preferably uniformly arranged vanes 31-37, are shortened to establish radial flow paths 31A, 32A near the bottom of chamber 21 where a substantially maximum head of reserve liquid acts to establish a high pressure differential and thereby create a reverse radial flow of air free liquid from the chamber 21 to the periphery of the impeller 22. The turbulence thereby created in this region mixes air with the liquid to form a foamy mixture from which air bubbles are peeled off, principally at the inner edges of vanes 33 and 34, and are discharged upwardly to prime the pump by the momentum induced by the impeller and their inherent buoyancy. Long reverse flow passages exist between vanes 35, 36 and 37, which have inner edges close to the impeller periphery, so that an hydraulic seal is maintained between the high pressure air within the pump chamber 21 and the low pressure air within the impeller 22, thereby eliminating the likelihood of creating a vortex of air. Since the vane 33 is closely adjacent the lower downward sweep region of the impeller periphery it may likewise have a portion of its inner end eliminated. In two alternative embodiments (not shown), having a diffuser with four and five vanes respectively, only one vane in each diffuser is shortened and the angle of the vanes with respect to the impeller periphery is so small that the inner end of the shortened vane still remains closely adjacent the impeller. The resulting reverse flow path, in the case of the four vane diffuser, is radial but, in the case of the five vane diffuser, it is only substantially radial. Specifications 546,541 and 691,362 are referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US125486A US3103177A (en) | 1961-07-20 | 1961-07-20 | Self-priming centrifugal pump |
Publications (1)
Publication Number | Publication Date |
---|---|
GB976114A true GB976114A (en) | 1964-11-25 |
Family
ID=22419933
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB27228/62A Expired GB976114A (en) | 1961-07-20 | 1962-07-16 | Self priming centrifugal pump |
Country Status (2)
Country | Link |
---|---|
US (1) | US3103177A (en) |
GB (1) | GB976114A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0618368A1 (en) * | 1993-03-24 | 1994-10-05 | WILO GmbH | Radial centrifugal pump |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3451343A (en) * | 1967-02-03 | 1969-06-24 | Machinery Co Const | Pump means |
US3506374A (en) * | 1968-06-04 | 1970-04-14 | Decatur Pump Co | Self-priming pump |
US3918829A (en) * | 1974-06-19 | 1975-11-11 | Warren Pumps Inc | Low pressure-pulse kinetic pump |
AT342425B (en) * | 1976-05-12 | 1978-04-10 | Vogel Pumpen | SELF-PRIMING CENTRIFUGAL PUMP |
YU41671B (en) * | 1979-10-22 | 1987-12-31 | Tozd Tovarna Motorjev Tomos | Self suction centrifugal pump |
US4739525A (en) * | 1985-06-11 | 1988-04-26 | American Standard, Inc. | Self-contained toilet system |
DE3712916A1 (en) * | 1987-04-16 | 1988-11-03 | Korthaus Ernst | SELF-SUCTIONING CENTRIFUGAL PUMP |
GB2519503B (en) * | 2013-08-19 | 2015-08-12 | Dynamic Boosting Systems Ltd | Diffuser for a forward-swept tangential flow compressor |
EP4118338A1 (en) * | 2020-04-03 | 2023-01-18 | Zodiac Pool Systems LLC | Swimming pool and spa pumps configured to improve priming performance |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE302588C (en) * | ||||
DE440679C (en) * | 1924-07-19 | 1927-02-11 | Armaturen & Maschinenfabrik A | Ballast pump |
US2332875A (en) * | 1941-07-30 | 1943-10-26 | Alfred S Marlow | Self-priming pump |
US2653546A (en) * | 1949-11-03 | 1953-09-29 | Jr Alfred S Marlow | Self-priming pump |
US2945448A (en) * | 1957-02-15 | 1960-07-19 | Bell & Gossett Co | Universal centrifugal pump |
US2951449A (en) * | 1957-07-30 | 1960-09-06 | Bell & Gossett Co | Centrifugal pump |
-
1961
- 1961-07-20 US US125486A patent/US3103177A/en not_active Expired - Lifetime
-
1962
- 1962-07-16 GB GB27228/62A patent/GB976114A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0618368A1 (en) * | 1993-03-24 | 1994-10-05 | WILO GmbH | Radial centrifugal pump |
Also Published As
Publication number | Publication date |
---|---|
US3103177A (en) | 1963-09-10 |
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