A process method for anti-corrosion and anti-cavitation of impeller of water ring vacuum pump

A process method and vacuum pump technology, applied in anti-corrosion coatings, epoxy resin coatings, devices for coating liquids on surfaces, etc. Reasonable design of impeller coating, improved gas impact resistance, and improved work efficiency

Active Publication Date: 2021-06-04
上海邦聚工程材料技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a water ring vacuum pump impeller anti-corrosion and anti-cavitation process, which can solve the problems in the prior art that the anti-corrosion coating has poor anti-cavitation ability and the processing size error of the end surface of the impeller is large.

Method used

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  • A process method for anti-corrosion and anti-cavitation of impeller of water ring vacuum pump
  • A process method for anti-corrosion and anti-cavitation of impeller of water ring vacuum pump
  • A process method for anti-corrosion and anti-cavitation of impeller of water ring vacuum pump

Examples

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Comparison scheme
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Embodiment 1

[0034] A process method for anti-corrosion and anti-cavitation of a vacuum pump impeller, comprising the following steps:

[0035] Weigh 100g of bisphenol A epoxy resin (epoxy equivalent of 180), 30g of alumina powder (average particle size of 0.03mm), 2g of silane coupling agent, 7g of polyamine curing agent (triethylenetetramine g), Curing accelerator (2,4,5-tris(dimethylaminomethyl)phenol) 2g, mixed evenly to obtain primer A; (2) Weigh 80g of bisphenol A epoxy resin (epoxy equivalent 180) , Alumina powder (average particle size 0.03mm) 30g, silicon carbide powder (average particle size 0.03mm) 150g, toughening agent (liquid hydroxynitrile rubber) 5g, thickening thixotropic agent (fumed silica) 2g, polyamine curing agent (N-aminoethylpiperazine) 8g, mixed evenly to obtain paste material B; (3) Weigh 50g of bisphenol A epoxy resin (epoxy equivalent of 180), silicon carbide powder (average particle size 0.03mm) 100g, leveling agent (polydimethylsiloxane) 2g, polyamine curing ...

Embodiment 2

[0037] A process method for anti-corrosion and anti-cavitation of a vacuum pump impeller, comprising the following steps:

[0038](1) Weigh 80g of bisphenol A epoxy resin (epoxy equivalent of 180), 20g of alumina powder (average particle size of 0.03mm), 2g of silane coupling agent, polyamine curing agent (triethylenetetramine) 5g, 2g of curing accelerator (2,4,5-tris(dimethylaminomethyl)phenol), mixed evenly to obtain primer A; (2) Weigh bisphenol A epoxy resin (epoxy equivalent of 180 ) 100g, alumina powder (average particle size 0.03mm) 20g, silicon carbide powder (average particle size 0.03mm) 200g, toughening agent (liquid hydroxynitrile rubber) 5g, thickening thixotropic agent (gas phase dioxide Silicon) 2g, polyamine curing agent (N-aminoethylpiperazine) 10g, mix evenly to obtain paste material B; (3) Weigh 80g of bisphenol A epoxy resin (epoxy equivalent is 180), carbonize Silicon powder (average particle size: 0.03mm) 100g, leveling agent (polydimethylsiloxane) 2g, p...

Embodiment 3

[0040] A process method for an anti-corrosion and cavitation-resistant coating for a vacuum pump impeller, comprising the following steps:

[0041] Weigh 50g of bisphenol A epoxy resin (epoxy equivalent of 180), 40g of alumina powder (average particle size of 0.03mm), 1g of silane coupling agent, 10g of polyamine curing agent (triethylenetetramine), and cure Accelerator (2,4,5-tris(dimethylaminomethyl)phenol) 1g, mixed evenly to obtain primer A; (2) Weigh 50g of bisphenol A epoxy resin (epoxy equivalent 180), Alumina powder (average particle size 0.03mm) 40g, silicon carbide powder (average particle size 0.03mm) 100g, toughening agent (liquid hydroxynitrile rubber) 5g, thickening thixotropic agent (fumed silica) 2g , polyamine curing agent (N-aminoethylpiperazine) 5g, mixed evenly to obtain paste material B; (3) Weigh 100g of bisphenol A epoxy resin (epoxy equivalent of 180), silicon carbide powder ( Average particle size is 0.03mm) 50g, leveling agent (polydimethylsiloxane) ...

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Abstract

The invention discloses a corrosion-resistant and cavitation-resistant process method for a vacuum pump impeller, which comprises the following steps: cutting and removing the 3mm body thickness of the impeller end face by machining to form a coating reserved area; coating the primer A on the The end face of the impeller is covered with paste material B to accumulate the thickness of the machining allowance. After the paste material B is cured, it is machined to the precise size to form a cavitation-resistant layer. The surface of blades and blade ribs is compositely painted with primer A and topcoat B to form an anti-corrosion layer. The process method of the present invention can accurately control the coating thickness of the vacuum pump impeller end surface, and the assembly gap can be processed to the set size. The design of cavitation coating is more reasonable, which greatly prolongs the service life of the impeller.

Description

technical field [0001] The invention relates to the technical field of anti-corrosion application of water ring vacuum pumps, in particular to a process method of vacuum pump impeller coating to provide anti-corrosion and anti-cavitation effects. Background technique [0002] Water ring vacuum pumps are widely used in many processes of industrial production, such as vacuum filtration, vacuum water diversion, vacuum feeding, vacuum evaporation, vacuum concentration, vacuum moisture resurgence and vacuum degassing. In many industrial processes for vacuum extraction, the gas contains acid gases such as hydrogen sulfide, hydrogen chloride, sulfur dioxide, etc., which can easily cause corrosion of the impeller, cylinder, distribution plate, end cover, etc. of the vacuum pump, resulting in a drop in vacuum degree, and corrosion in severe cases. Perforated equipment downtime. The method of using epoxy anti-corrosion coating has been widely used in the anti-corrosion field of equip...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D5/08C09D7/61C09D7/63C09D7/65C09D7/47C09D7/43B05D1/38B05D3/02B05D3/10B05D3/12
CPCB05D1/38B05D3/0254B05D3/10B05D3/12C08K5/54C08K2003/2227C09D5/08C09D163/00C08L15/00C08K13/02C08K3/22C08K3/34C08K3/36C08K5/3462C08L83/04
Inventor 邬苏焕丁芳
Owner 上海邦聚工程材料技术有限公司
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