JPS57129298A - Impeller for volute pump or the like - Google Patents
Impeller for volute pump or the likeInfo
- Publication number
- JPS57129298A JPS57129298A JP1444981A JP1444981A JPS57129298A JP S57129298 A JPS57129298 A JP S57129298A JP 1444981 A JP1444981 A JP 1444981A JP 1444981 A JP1444981 A JP 1444981A JP S57129298 A JPS57129298 A JP S57129298A
- Authority
- JP
- Japan
- Prior art keywords
- vane
- impeller
- predetermined angle
- overlapped
- occurrence
- 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
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/24—Vanes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
PURPOSE:To enable to prevent lowering of the efficiency of a volute pump or the like due to occurrence of back flow, by extending the outlet end of each vane in the manner that the extended portion of one vane and the inlet end of other vane are overlapped with each other over a predetermined angle. CONSTITUTION:Outlet end of each vane 12 is extended a proper length smoothly along the outer circumference 11a of an impeller 11, so that inlet end portion 12a of one vane 12 and an extended portion 12b at the outlet portion of other vane 12 are overlapped a predetermined angle alpha with each other along the circumference of the impeller 11. Therefore, if the circumferential length of the extension 12b is selected appropriately, it is enabled to overlap the two vanes 12 with each other always over the predetermined angle alpha, so that occurrence of back flow can be prevented and hence lowering of efficiency can be prevented accordingly.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1444981A JPS57129298A (en) | 1981-02-04 | 1981-02-04 | Impeller for volute pump or the like |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1444981A JPS57129298A (en) | 1981-02-04 | 1981-02-04 | Impeller for volute pump or the like |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57129298A true JPS57129298A (en) | 1982-08-11 |
Family
ID=11861337
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1444981A Pending JPS57129298A (en) | 1981-02-04 | 1981-02-04 | Impeller for volute pump or the like |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57129298A (en) |
-
1981
- 1981-02-04 JP JP1444981A patent/JPS57129298A/en active Pending
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