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Impeller, cutting method and application thereof

A cutting method and impeller technology, applied to components of pumping devices for elastic fluids, non-variable pumps, machines/engines, etc., can solve the problems of time-consuming and energy-consuming, different axial forces, etc. , to achieve the effect of reducing maintenance rate, reducing investment and reducing pump weight

Inactive Publication Date: 2017-10-03
SHIMGE PUMP IND GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the traditional axial force calculations use empirical formulas and test methods. There are various empirical formulas for axial force. spend a lot of time and energy

Method used

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  • Impeller, cutting method and application thereof
  • Impeller, cutting method and application thereof
  • Impeller, cutting method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0033] Embodiment: a kind of impeller, as figure 1 As shown, it includes a front cover plate 1, a rear cover plate 2 and a plurality of blades 3 arranged between the front cover plate and the rear cover plate, and the two sides of each blade are connected to the front cover plate and the rear cover plate respectively. to form a connection. As shown in 2, several cutting notches 4 are arranged on the rear cover, and each of the cutting notches is respectively located between two adjacent blades (the cutting notches are formed by blades I and II). on the runner), each of the cutting gaps is a triangle, the two sides of the triangle are curved sides, and the other side is a straight line, and the intersection point of the back side of the blade I and the outer circle of the rear end cover is point A, which is located at the The intersection of the working surface of the adjacent blade II in the bending direction of the blade I and the outer circle of the rear end cover is point ...

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Abstract

The invention relates to an impeller, a cutting method and its application, characterized in that: the rear cover plate is provided with several cutting notches, each of the cutting notches is a triangle, and the two sides of the triangle are curved sides, and the other side is a straight line, the intersection of the back side of the blade I and the outer circle of the rear end cover is point A, and the intersection of the working surface of the adjacent blade II in the bending direction of the blade I and the outer circle of the rear end cover is Point B, the first curved side is the arc segment AB between point A and point B, the perpendicular line from point A to the working surface of blade II is AA´, one end point of the other curved side is point C, and the angle between the line connecting point A and point C and the vertical line AA´ is θ. Its effect: cutting the impeller back cover with a special shape can greatly reduce the axial force generated on the impeller, which not only improves the service life of the impeller and surrounding components, but also improves the effective working efficiency of the pump.

Description

technical field [0001] The invention relates to an impeller, a cutting method and an application thereof. Background technique [0002] When the pump is running, an axial force acts on the rotor. If measures are not taken to balance the axial force, the axial force will pull the rotor to move axially in series, causing collision and friction between the moving and static parts, causing damage to the bearing and corresponding parts, or even breaking the shaft and failing to work, seriously affecting the pump's performance. The damage or broken shaft caused by normal operation needs to be repaired and replaced in time, which increases the maintenance cost. [0003] The traditional measures used to balance the axial force include balance holes, double-suction impellers, symmetrical arrangement of impellers, back blades, balance drums, balance discs, etc. When the measure of balance hole is adopted, a sealing ring must be provided on the back cover of the impeller, which is of...

Claims

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Application Information

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IPC IPC(8): F04D29/22F04D29/66B23D79/00
CPCF04D29/2216B23D79/00F04D29/66
Inventor 付威葛杰蒋敦军卢新全
Owner SHIMGE PUMP IND GRP CO LTD
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