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Semi-open type vortex pump impeller structure design method

A technology of structural design and swirl pump, which is applied to non-variable pumps, components of pumping devices for elastic fluids, pumps, etc., can solve problems such as waste, reduce waste of resources, improve structure, balance shaft force effect

Inactive Publication Date: 2016-04-20
江苏国泉泵业制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At this time, if the impeller is replaced as a whole, it will cause a lot of waste

Method used

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  • Semi-open type vortex pump impeller structure design method
  • Semi-open type vortex pump impeller structure design method
  • Semi-open type vortex pump impeller structure design method

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Embodiment Construction

[0051] figure 1 and figure 2 Jointly determine the shape and installation of the impeller of the swirl pump. It improves the impeller structure of the swirl pump, and only replaces the blades when the blades are greatly worn, reducing resource waste. Because the special structure is equivalent to an additional back blade, it can well balance the axial force. The present invention determines impeller inlet diameter (1), impeller outlet diameter (2), blade outlet width (3), impeller rear cover groove width (4), back blade thickness (7), back Blade width (8) and number of blades.

[0052] D j = K 0 ( Q / n ) 0.71 + ( M ...

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Abstract

The invention relates to a semi-open type vortex pump impeller structure design method. In the method, design formulas of an impeller inlet diameter, an impeller outlet diameter, a blade outlet width, an impeller back cover plate groove width, a back blade thickness, a back blade width and a blade number are given. A vortex pump, designed according to the design method, can havea vortex pump impeller structure improved; when a blade is highly worn, only the blade is replaced, so that the resource waste is reduced; and as a special structure is equivalent to one with an additionally arranged back blade, the axial force can be well balanced.

Description

technical field [0001] The invention relates to a method for designing the impeller structure of a semi-open swirl pump, in particular to a method for designing the structure of a semi-open impeller of a swirl pump with detachable parts. Background technique [0002] With the advancement of science and technology, pumps are not only used to transport various liquids, but also to transport various materials (including solids). Swirl pumps are usually used to transport impurities-containing media. Structurally, the impeller of the swirl pump retracts to the back chamber of the vaneless cavity, and the blades are mostly in the form of straight blades. The unique structure makes it non-clogging for large particles and long-fiber dirt, so it is also called a non-clogging pump. Due to the simultaneous existence of through flow and circulating flow inside it, a large hydraulic loss is caused. Therefore, its biggest disadvantage is low pump efficiency, generally η≤50%. Because it...

Claims

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Application Information

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IPC IPC(8): F04D29/22F04D29/24
CPCF04D29/22F04D29/24
Inventor 朱荣生杨爱玲陈宗良
Owner 江苏国泉泵业制造有限公司
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