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Title:
CENTRIFUGAL OR HALF AXIAL FLOW TYPE PUMP IMPELLER USED IN PUMP FOR TRANSPORTING SEWAGE
Document Type and Number:
Japanese Patent JPH11201087
Kind Code:
A
Abstract:

To solve problems such as clogging and a low efficiency by arranging a front edge of an impeller in a plane surface which is perpendicular to an impeller axis, and extendedly arranging a supplying groove from an inlet to an outlet in a pump housing wall part on a surface opposed to the impeller while drawing a curve in an impeller rotational direction.

A front edge 6 of one or a plurality of impellers 5 is arranged on an upstream side of a pump housing 1, namely, it is arranged in a plane surface which is perpendicular a rotary shaft Z of an impeller 3 in a cylindrical inlet 2. One or many cutout parts, namely, a groove 8 extends along a surface 7 opposed to the impeller 3 on a wall part of the pump housing 1, namely, it is arranged extendedly from the cylindrical inlet 2 to the surface 7. The groove 8 is moved together with the front edge 6 of the impeller 5 so as to send a contaminant in an outlet direction.


Inventors:
Arbeus, Ulf
Application Number:
JP1998000272657
Publication Date:
July 27, 1999
Filing Date:
September 28, 1998
Export Citation:
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Assignee:
ITT MFG ENTERP INC
International Classes:
E03F5/22; F04D1/04; F04D3/02; F04D7/00; F04D7/04; F04D29/18; F04D29/24; (IPC1-7): F04D29/24; E03F5/22
Attorney, Agent or Firm:
浅村 皓 (外3名)