Why does the water ring vacuum pump have journal wear and how to deal with it more appropriately?

Time：

2021-07-08

When the water ring vacuum pump was first introduced, it was mostly used as a self-priming pump, and later it was gradually used in many industrial fields such as petroleum, chemical industry, machinery, mining, light industry, medicine, food, etc. As more and more companies use water ring vacuum pumps, there are more and more problems during the operation of equipment. For example: due to the influence of high temperature, high pressure, strong corrosion and cavitation, journal wear and corrosion often occur. So why does the water ring vacuum pump have journal wear and how to deal with it more appropriately?

After the professional maintenance of Shandong Boke Vacuum Technology Co., Ltd., it was found that the reason why the water ring vacuum pump has journal wear is mainly due to the loosening of the axial locking nut, which leads to the axial movement of the bearing, which causes wear to the bearing position. When the journal of the water ring vacuum pump is worn, there will be a sharp increase in temperature in a short period of time during operation accompanied by abnormal noise.

Routine repair methods for journal wear of water ring vacuum pump:

The traditional repair welding machine processing method is easy to cause material damage, resulting in deformation or fracture of parts, which has great limitations; brush plating and spray plating reprocessing often require outsourcing, which not only has a long repair cycle and high cost, but also because the repaired material is metal. Materials (metal impact resistance and poor retreat) cannot fundamentally solve the cause of wear.

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Field repair method of water ring vacuum pump journal wear:

On-site repair is an equipment maintenance mode developed in recent years. The principle of on-site repair is to use Soleil carbon nano-polymer material repair technology to repair equipment failures without processing. The material is a high temperature resistance, strong corrosion resistance, machinable repair material, it has good adhesion and mechanical properties, and can well buffer and resist the comprehensive mechanical force in the process of mechanical operation, and can be used in the corresponding Repair during the repair process can better ensure 100% coordination of the surface of the parts, and the concession that the material does not have can well absorb the impact force of the equipment, use the front and rear axes as the positioning size for repair, and ensure the repair of the parts. Accuracy, so as to ensure the application effect after repair.

　Field repair steps for journal wear of water ring vacuum pump:

(1) Use oxygen acetylene for surface baking oil treatment;

(2) Grind the surface with tools to remove high points;

(3) Measure the diameter of the shaft to ensure that the base surface of the shaft is not worn;

(4) Carry out empty test tooling to ensure that the tooling is absolutely suitable;

(5) The use of absolute ethanol can be used for surface cleaning to ensure that the surface is dry and clean;

(6) Spray SD7000 release agent on the inner surface of the mold;

(7) Mixing and coating carbon nanopolymer materials;

(8) Clamping the special tooling and heating the shaft end to quickly solidify the material;

(9) Remove the tooling, remove excess materials, and complete the repair work.