A high-efficiency wear-resistant double-suction pump impeller and its preparation method

A technology for double-suction pumps and impellers, which is applied to parts, pumps, and pump components of pumping devices for elastic fluids, and can solve the problems of low service life and high replacement costs of double-suction pump impellers, and achieve increased adhesion, Ease of application by spraying and improved stability

Active Publication Date: 2021-04-23
SANLIAN PUMP IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention overcomes the defects of the prior art, provides a high-efficiency wear-resistant double-suction pump impeller with excellent wear resistance and adhesion, and solves the problems of low service life and high replacement cost of the double-suction pump impeller in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A high-efficiency and wear-resistant double-suction pump impeller includes an impeller body and a wear-resistant layer coated on the impeller body. The wear-resistant layer includes the following components in parts by weight:

[0033] Modified natural fiber 20kg, modified filler 40kg, surfactant 1kg, dispersant 1.2kg, nickel powder 0.6kg, polyvinylpyrrolidone 40kg;

[0034] The above raw materials are prepared through the following steps to form the slurry for the wear-resistant layer:

[0035] (1) Weigh the modified natural fiber, modified filler, and nickel powder according to the formula, mix them evenly in a high-speed mixer, then feed them into the mixing tank, add solvent, surfactant and dispersant, and ultrasonically disperse them for 20 ~30min to get the mixed solution A;

[0036] (2) Add polyvinylpyrrolidone in a state of stirring, and continue stirring for 15 minutes after adding, to obtain a slurry for forming a wear-resistant layer.

[0037] The modified na...

Embodiment 2

[0047] The content of this embodiment is basically the same as that of Example 1, and the similarities will not be repeated. The difference is that the preparation method of the high-efficiency wear-resistant double-suction pump impeller includes the following steps:

[0048] (1) Place the formed impeller body in the treatment kiln, heat it to 30-35°C in the treatment kiln, keep it for 100-120min, and preheat the impeller body;

[0049] (2) Use a pig hair brush to evenly paint the slurry along the radial direction of the impeller body, with a thickness of 1-1.6mm, and then raise the temperature of the center of the impeller body to 60-62°C at a heating rate of 4-12°C / h ;

[0050] (3) Take out the impeller after step (2), and polish it with a 400-grit sandpaper wheel with an electric tool to remove the film covering the surface of the impeller body, and then use a pig hair brush to evenly brush the slurry along the radial direction of the impeller The thickness of the coating ...

Embodiment 3

[0053] The content of this embodiment is basically the same as that of Example 2, and the similarities will not be repeated. The difference is that 30 kg of modified natural fibers, 50 kg of modified fillers, 1.5 kg of surfactants, 1.6 kg of dispersants, and 0.9 kg of nickel powder kg, polyvinylpyrrolidone 45kg.

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Abstract

The present invention relates to the technical field of double-suction pumps, in particular to a high-efficiency wear-resistant double-suction pump impeller and a preparation method thereof. The wear-resistant layer comprises the following components in parts by weight: modified natural fiber 20-40 40-60 parts of modified filler, 1-2 parts of surfactant, 1.2-2 parts of dispersant, 0.6-1.2 parts of nickel powder, 40-50 parts of polyvinylpyrrolidone, so, in this application, it is in the line Shaped cellulose is wound on the outer peripheral side of the natural fiber. The winding method can improve the strength of the natural fiber and the firmness of the graphene outside the fiber. The adhesion of the substance on the fiber can enhance the stability and reliability of the modified wear-resistant layer. This application uses the modified fiber with high stability and reliability and good dispersion to make the preparation of the wear-resistant layer slurry uniform. Stablize.

Description

Technical field: [0001] The invention relates to the technical field of double-suction pumps, in particular to an efficient and wear-resistant double-suction pump impeller and a preparation method thereof. Background technique: [0002] As an important form of centrifugal pump, double-suction pump is widely used in engineering because of its high lift and large flow. The impeller of this type of pump is actually composed of two back-to-back impellers, and the water flow from the impeller is merged into a volute. The double-suction pump has the following characteristics: it is equivalent to two single-suction impellers of the same diameter working at the same time, and the flow rate can be doubled under the same outer diameter of the impeller; the pump casing is opened horizontally, which is convenient for inspection and maintenance. The inlet and outlet of the suction pump are in the same direction and perpendicular to the pump shaft, which is convenient for the arrangement...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/22F04D29/02C09D139/06C09D7/61C09D7/62
CPCC08K2003/0862C08K2003/265C08K2201/011C09D139/06C09D7/61C09D7/62F04D29/026F04D29/2294C08K9/02C08K3/08C08K3/041C08K3/26C08K3/04
Inventor 汪李劼秦新保许吉军张彦明徐刚
Owner SANLIAN PUMP IND CO LTD
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