JPS57153999A - Casing of centrifugal pump - Google Patents
Casing of centrifugal pumpInfo
- Publication number
- JPS57153999A JPS57153999A JP3940281A JP3940281A JPS57153999A JP S57153999 A JPS57153999 A JP S57153999A JP 3940281 A JP3940281 A JP 3940281A JP 3940281 A JP3940281 A JP 3940281A JP S57153999 A JPS57153999 A JP S57153999A
- Authority
- JP
- Japan
- Prior art keywords
- casing
- spacing
- pump
- swirl
- shroud
- 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.)
- Pending
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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
PURPOSE:To convert a frictional loss of a disc into an effective work done, by forming a projecting wall which communicates a tank area and an internal peripheral area of a casing and making a spacing between the projecting wall and an impeller shroud as small as possible. CONSTITUTION:Projecting walls 9a, 9b which communicate a tank area 8 and an internal peripheral area are formed on an internal face which is opposed via an impeller shroud 2a, 2b and a spacing 7a, 7b of a pump casing 1, showing a gradually tapered form from the start of swirl toward the end of the swirl of a volute casing 3. Liquid which flows from the start of the swirl of the volute casing 3 into the spacing 7a, 7b between the impeller shroud 2a, 2b and the casing 1 during operation of a pump is subjected to a word performed by friction with an external face of the shroud 2a, 2b. Thereafter, while flowing along the tapered spacing 7a, 7b, the liquid is collected to rise in pressure and flows from an end of the spacing 7a, 7b into a discharge flow of the impeller 2 for increasing a discharge pressure of the pump.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3940281A JPS57153999A (en) | 1981-03-20 | 1981-03-20 | Casing of centrifugal pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3940281A JPS57153999A (en) | 1981-03-20 | 1981-03-20 | Casing of centrifugal pump |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57153999A true JPS57153999A (en) | 1982-09-22 |
Family
ID=12551991
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3940281A Pending JPS57153999A (en) | 1981-03-20 | 1981-03-20 | Casing of centrifugal pump |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57153999A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995008714A1 (en) * | 1993-09-25 | 1995-03-30 | Ksb Aktiengesellschaft | Turbo-machine with reduced attrition |
US7766605B2 (en) | 2003-10-20 | 2010-08-03 | Itt Manufacturing Enterprises Inc. | Centrifugal pump |
-
1981
- 1981-03-20 JP JP3940281A patent/JPS57153999A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995008714A1 (en) * | 1993-09-25 | 1995-03-30 | Ksb Aktiengesellschaft | Turbo-machine with reduced attrition |
US5984629A (en) * | 1993-09-25 | 1999-11-16 | Ksb Aktiengesellscaft | Turbo-machine with reduced abrasive wear |
US7766605B2 (en) | 2003-10-20 | 2010-08-03 | Itt Manufacturing Enterprises Inc. | Centrifugal pump |
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