Combined antiwearing blades

A combined, impeller technology, applied in non-variable volume pumps, components of pumping devices for elastic fluids, machines/engines, etc., can solve problems such as high cost and difficult impellers, and achieve high production efficiency and cost. The effect of increasing less and reducing the frequency of damage

Inactive Publication Date: 2007-06-06
宜兴市宙斯泵业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is achieved, the main improvement is to change the original integral impeller into blades and separate the webs of the fixed blades, the impeller webs that are not easy to wear are made of existing general materials, and the blades are made of high wear-resistant materials, and then the two are combined , which not only overcomes the difficulty of making the impeller with high wear-resistant materials and the high cost, but also greatly improves the wear resistance of the blade and prolongs the overall service life of the impeller.

Method used

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  • Combined antiwearing blades
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1: Referring to Figures 1-5, the impeller web core 1 is cast in metal, and the surface is processed with grooves 2 for embedding the blades according to the arc shape of the blades. Using wear-resistant ceramics (such as silicon carbide, Al 2 o 3 The impeller blade 3 is made of high-purity alumina, zirconia), wear-resistant alloy, and glass-ceramics with a content of more than 95%. The blade is inserted into the groove of the impeller core, put into the mold, and the hardenable resin 4 is poured on the peripheral surface of the web core of the metal impeller, so as to obtain the combined wear-resistant impeller with auxiliary blades 5 .

[0028] In addition, the surrounding surface of the metal core can also be injection molded plastics, or other organic polymer materials, and 30-90%wt mineral particles can be added in the polymer materials, or poplar-free fibers (such as ceramic fibers, glass fibers), to Improve the wear resistance of the web.

[0029] In...

Embodiment 2

[0031] Embodiment 2: Referring to Figures 6 and 7, the combined wear-resistant impeller of the present invention has a cast metal impeller web 8, and an additionally cast wear-resistant alloy blade 7 is fixed on the web by welding 9.

Embodiment 3

[0032] Embodiment 3: Referring to Figures 8, 9, and 10, the combined wear-resistant impeller of the present invention, its wear-resistant blade 10 can also be a blade part, that is, the web and part of the blade are made into one (leaving the most easily worn angle of attack position ), the wear-resistant blade 10 is welded or embedded in the default position of the blade.

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PUM

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Abstract

The invention relates to an improved half-opened wear-resisting impeller, in which, the vanes and the web are made of different materials and the vanes is made of high-abrasive material and then combined with the web, so that the operation life of the integral impeller has increased greatly.

Description

technical field [0001] The invention relates to the improvement of the centrifugal pump impeller, in particular to a semi-open wear-resistant impeller. Background technique [0002] Centrifugal pumps, especially mortar pumps for conveying slurry, have solid particles in the conveying medium, which will cause blockage of the flow channel of the closed impeller, so semi-open impellers are often used. However, the particles in the pumped slurry medium are easy to wear the blades, especially the top of the contact surface between the blade and the pump cover and the attack angle of the blade. For example, in non-ferrous metal smelting and mine transportation centrifugal pumps, the service life of the impeller is only one week or more. about a month. [0003] The wear of the blades increases the gap between the pump cover and the impeller, and increases the return flow of liquid at the pump outlet and suction port, resulting in a decrease in the volumetric efficiency of the pump...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/02F04D29/24
Inventor 蒋龙福闵锡君蒋兆平
Owner 宜兴市宙斯泵业有限公司
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