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Centrifugal pump impeller

a centrifugal pump and impeller technology, applied in the direction of liquid fuel engines, vessel construction, marine propulsion, etc., can solve problems such as power loss, and achieve the effect of simplifying the assembly process of the impeller

Inactive Publication Date: 2011-07-28
SHIN MEIWA IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0010]According to the foregoing configuration, the lid is attached and fixed to the impeller body through the engagement section. By attaching and fixing the lid to the impeller body, the balance weight is sandwiched between the holding section of

Problems solved by technology

However, the opening of the recessed section is exposed, resulting in a power loss due to fluid turbulence.

Method used

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  • Centrifugal pump impeller
  • Centrifugal pump impeller
  • Centrifugal pump impeller

Examples

Experimental program
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Effect test

Embodiment Construction

[0023]An example of a centrifugal pump impeller includes an impeller body having a substantially cylindrical shape with first and second end surfaces facing each other in a cylindrical axis direction, and with a circumferential surface interposed between the first and second end surfaces; and including an internal flow path which connects between an inlet opening in the first end surface and an outlet opening in the circumferential surface, and a recessed section which opens in the second end surface, and which is recessed in the cylindrical axis direction in the second end surface; a lid which is attached to the second end surface of the impeller body, and which covers the opening of the recessed section so that the second end surface of the impeller body defines a flat surface; and a balance weight arranged between the impeller body and the lid. The lid is attached and fixed to the impeller body through an engagement section, and holding sections of the balance weight are formed i...

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PUM

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Abstract

An impeller includes an impeller body in which an internal flow path and a recessed section are formed; a lid covering an opening of the recessed section; and a balance weight arranged between the impeller body and the lid. The lid is attached and fixed to the impeller body through an engagement section. Holding sections for the balance weight are formed in a back-side surface of the lid. When attaching and fixing the lid to the impeller body, the balance weight is sandwiched between the holding section of the lid and the impeller body to be fixed.

Description

TECHNICAL FIELD[0001]A technique disclosed herein relates to a centrifugal pump impeller.BACKGROUND ART[0002]Conventionally, a centrifugal pump has been used for delivering, e.g., drainage. Among various impellers attached to the centrifugal pump, a non-clog impeller in which a flow path connecting between an inlet opening through a first end surface and an outlet opening through a circumferential surface is formed has been known as an impeller in which it is less likely to cause clogging of, e.g., drainage containing solid substances such as impurities (see, e.g., Patent Document 1).[0003]The non-clog impeller has a single vane, and therefore is formed in non-symmetric shape about a rotation axis. Thus, a part of the impeller disclosed in Patent Document 1 is removed in order to achieve static balance at rest and dynamic balance during rotation in air (hereinafter collectively referred to as “mechanical balance”). In a second end surface of the substantially cylindrical impeller, w...

Claims

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Application Information

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IPC IPC(8): F01D5/16F04D29/22F04D29/66
CPCF04D7/04F04D29/662F04D29/2238F04D29/225F04D29/669
Inventor TARUI, MOTONOBUTAKEUCHI, KAZUKIENOMOTO, JUNYATANAKA, NOBUKAZU
Owner SHIN MEIWA IND CO LTD