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Design method for impeller of single-channel cutting pump

A design method and single-channel technology, applied in the components, pumps, pump components, etc. of pumping devices for elastic fluids, can solve the problem of low reliability, high total power consumption, and pump power consumption of single-channel pumps. problem, to achieve the effect of good response, improved lift and efficiency, and improved flow conditions

Inactive Publication Date: 2012-04-11
JIANGSU GUOQUAN PUMP MFG CO LTD
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

The single-channel pump with cutting function has very good passing capacity when transporting sewage. However, the cutter disc is installed at the inlet of the impeller, which consumes part of the power of the pump, and the lift, flow and efficiency characteristics of the pump will be affected. There is a certain degree of decline, and the total power consumption of the single-channel pump with cutting function is high, and the phenomenon of over-power will appear, resulting in low reliability of the single-channel pump with cutting function

Method used

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  • Design method for impeller of single-channel cutting pump
  • Design method for impeller of single-channel cutting pump
  • Design method for impeller of single-channel cutting pump

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Embodiment Construction

[0035] figure 1 and figure 2 Together determine the impeller shape for this embodiment. It is a single-channel impeller. The impeller has a blade (3) in total. The blade has front and rear cover plates, and an approximately circular flow channel is formed between the front and rear cover plates. In order to improve the flow conditions, the lift and Efficiency, and the operating reliability of single channel pump, the present invention determines impeller impeller inlet diameter (1) D by the following relations j , The diameter of the outer circle of the blade (2)D 2 , the outlet width of the impeller blade (4)b 2 , impeller blade wrap angle (5)

[0036] D j = 16 · ( Q n ) 0.7 + d h ...

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Abstract

The invention relates to a design method for an impeller of a single-channel cutting pump. The design method provides design formula of main geometric parameter outer diameter, outlet width, inlet diameter and blade wrap angle of blades. The flow condition can be improved by using the single-channel impeller, and the lift and efficiency as well as operating reliability of the single-channel pump are improved.

Description

technical field [0001] The invention relates to a method for designing main parts of a single-channel pump, in particular to a method for designing an impeller of a single-channel pump with a cutting function. Background technique [0002] Presently, known single-channel pumps are typical forms of non-clogging pumps. The single-channel pump with cutting function has very good passing capacity when transporting sewage. However, the cutter disc is installed at the inlet of the impeller, which consumes part of the power of the pump, and the lift, flow and efficiency characteristics of the pump will be affected. There is a certain degree of decline, and the total power consumption of the single-channel pump with cutting function is high, and the phenomenon of overpower will appear, resulting in low reliability of the single-channel pump with cutting function. [0003] The single-channel impeller is the core component that affects the performance of the single-channel pump. Ther...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/22
Inventor 朱荣生杨爱玲王振伟林鹏
Owner JIANGSU GUOQUAN PUMP MFG CO LTD
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