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Anti-corrosion pump lining and preparation method thereof

A lining and raw material technology, which is used in the field of anti-corrosion pump lining and preparation, can solve the problems of poor wear resistance, high fluid pressure, easy damage and leakage of seals, etc., to improve acid corrosion resistance and wear resistance, good toughness and resistance to Impact ability, the effect of prolonging the service life

Inactive Publication Date: 2019-01-15
GUIZHOU XIANGYU PUMP VALVE MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The plastic-lined pump is not easy to crack, and it is very convenient for seal installation, but the wear resistance is not good, the service life is very short, and the fluid pressure in the shaft seal cavity is high, and the seal is easily damaged and leaked
[0005] The back-suction plastic anti-corrosion and wear-resistant pump has good anti-corrosion performance and installation performance, and there is no problem of cracking, and the main shaft has good sealing performance and long sealing life; but its wear resistance is poor
[0006] Therefore, the above three commonly used corrosion-resistant and wear-resistant pumps are still the main types of pumps in the chemical and smelting industries. Although they can all be used, the results are not satisfactory.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1. An anti-corrosion pump lining is composed of the following raw materials in parts by weight:

[0029] PTFE resin: 28 parts, natural rubber: 20 parts,

[0030] Ceramic powder: 45 parts, titanium dioxide: 4 parts,

[0031] Jade powder: 3 parts, curing agent: 0.8 parts,

[0032] Polyurethane resin: 19 parts, fumed silica 3 parts,

[0033] Coupling agent: 1 part.

[0034] The above-mentioned anti-corrosion pump lining is prepared according to the following steps: after the above-mentioned raw materials are crushed into powder, bake at 100-120°C for 5-6 hours, mold them into a sintering furnace and rapidly heat up to 240-260°C, Sinter for 2-4 hours, then cool naturally.

Embodiment 2

[0035] Example 2. An anti-corrosion pump lining is composed of the following raw materials in parts by weight:

[0036] Polytetrafluoroethylene resin: 20 parts, natural rubber: 15 parts,

[0037] Ceramic powder: 40 parts, titanium dioxide: 2 parts,

[0038] Jade powder: 1 part, curing agent: 0.3 part,

[0039] Polyurethane resin: 15 parts, fumed silica 1 part,

[0040] Coupling agent: 0.5 parts.

[0041] The above-mentioned anti-corrosion pump lining is prepared according to the following steps: after the above-mentioned raw materials are crushed into powder, bake at 100-120°C for 5-6 hours, mold them into a sintering furnace and rapidly heat up to 240-260°C, Sinter for 2-4 hours, then cool naturally.

Embodiment 3

[0042] Example 3. An anti-corrosion pump lining is composed of the following raw materials in parts by weight:

[0043] PTFE resin: 35 parts, natural rubber: 25 parts,

[0044] Ceramic powder: 50 parts, titanium dioxide: 6 parts,

[0045] Jade powder: 5 parts, curing agent: 1 part,

[0046] Polyurethane resin: 22 parts, fumed silica 5 parts,

[0047] Coupling agent: 1.5 parts.

[0048] The above-mentioned anti-corrosion pump lining is prepared according to the following steps: after the above-mentioned raw materials are crushed into powder, bake at 100-120°C for 5-6 hours, mold them into a sintering furnace and rapidly heat up to 240-260°C, Sinter for 2-4 hours, then cool naturally.

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PUM

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Abstract

The invention discloses an anticorrosive pump lining, which is composed of the following raw materials (by weight): 20-35 parts of polytetrafluoroethylene resin, 15-25 parts of natural rubber, 40-50 parts of ceramic powder, 2-6 parts of titanium dioxide, 1-5 parts of jade powder, 0.3-1 part of a curing agent, 15-22 parts of polyurethane resin, 1-5 parts of fumed silica, and 0.5-1.5 parts of a coupling agent. The anticorrosive pump lining has the characteristics of good wear resistance, good anti-corrosion performance and strong mechanical property.

Description

technical field [0001] The invention relates to the field of chemical anticorrosion pumps, in particular to an anticorrosion pump lining and a preparation method thereof. Background technique [0002] Anti-corrosion and wear-resistant pumps are required to transport corrosive slurry in the chemical industry, non-ferrous metal hydrometallurgy, mine dressing, and fertilizer industries, because the fluorine, sulfuric acid, hydrochloric acid and other strong corrosive media contained in the slurry transported in these industries have a great impact on the pump. High anti-corrosion requirements, these slurries contain a lot of solids, so the requirements for pump wear resistance are also high. There are three commonly used anti-corrosion and wear-resistant pumps: ceramic pumps, plastic-lined pumps, and back-suction plastic anti-corrosion and wear-resistant pumps, but each has its advantages and disadvantages: [0003] Ceramic pumps are anti-corrosion and highly wear-resistant, a...

Claims

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Application Information

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IPC IPC(8): C08L27/18C08L7/00C08L75/04C08K3/22C08K3/36
CPCC08L27/18C08K2003/2241C08L2205/03C08L7/00C08L75/04C08K3/00C08K3/22C08K3/36
Inventor 朱德祥
Owner GUIZHOU XIANGYU PUMP VALVE MFG
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