Efficient and wear-resisting double entry pump impeller and preparation method thereof

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, Easy to spray and apply, good fiber dispersion effect

Active Publication Date: 2018-12-07
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 invention relates to the technical field of double entry pumps, in particular to an efficient and wear-resisting double entry pump impeller and a preparation method thereof. A wear-resisting layercomprises, by weight, 20-40 parts of modified natural fibers, 40-60 parts of modified filler, 1-2 parts of a surfactant, 1.2-2 parts of a dispersing agent, 0.6-1.2 parts of nickel powder and 40-50 parts of polyvinylpyrrolidone. Thus, in the efficient and wear-resisting double entry pump impeller and the preparation method thereof, linear cellulose is wound around the peripheral sides of the natural fibers, the strength of the natural fibers can be improved through the winding manner, and the firmness of graphene on the outer portions of the fibers can be improved; meanwhile, one end of the cellulose can be inserted into a graphene flake layer, the adhesion amount of graphene matter on the fibers can be improved, and therefore the steadiness and reliability of the wear-resisting layer canbe enhanced; and slurry of the prepared wear-resisting layer is uniform and stable through the good mixing dispersity of the modified high-stability and high-reliability fibers.

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 Applications(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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