JPS57129298A - Impeller for volute pump or the like - Google Patents

Impeller for volute pump or the like

Info

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
Application number
JP1444981A
Other languages
Japanese (ja)
Inventor
Akira Kodama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kubota Corp
Original Assignee
Kubota Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kubota Corp filed Critical Kubota Corp
Priority to JP1444981A priority Critical patent/JPS57129298A/en
Publication of JPS57129298A publication Critical patent/JPS57129298A/en
Pending legal-status Critical Current

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.
JP1444981A 1981-02-04 1981-02-04 Impeller for volute pump or the like Pending JPS57129298A (en)

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)

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