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Shaft seal of slurry pump

Shaft seal of slurry pump

It is an important link in the process of customizing slurry pump to choose the proper seal form.There is a pressure difference between the fluid in the slurry pump and the atmospheric pressure outside the pump, and the fluid leaks outward along the gap between the shaft and the shell. Therefore, a sealing device is needed, which is called the slurry pump shaft seal. General shaft drive pump need shaft seal device.In the traditional shaft seal, the packing seal is the main one.

A t present, after years of continuous development, there are three common shaft seal forms of slurry pump: dynamic seal, packing seal and mechanical seal;Three types of slurry pump shaft seal forms have been widely used, customers can freely choose according to their needs.

Seal of auxiliary impeller of slurry pump

1. It is suitable for stable water and water pressure on site, and can meet the requirements of shaft seal water pressure of slurry pump;

2. The sealing cost of the auxiliary impeller is low, easy to maintain, and the applicable conditions are simple;

3. During operation, lubricating grease is added to ensure the lubrication state;

Packing seal

1. Packing seal is widely used in slurry pump shaft seal;

2. The packing seal of slurry pump is an economical shaft seal;

3. The main sealing form of ZJ series slurry pump independently developed in China is packing seal;

Mechanical seal of slurry pump

1. Mechanical seal is a kind of shaft seal which is gradually applied to slurry pump in recent years;

2. High cost, its main advantage is zero leakage, suitable for strong acid and alkali medium, or process with high environmental requirements;

3. It has high requirements for use, and maintenance cost and difficulty are also large.

However, with the improvement of environmental protection awareness, the application of this type of shaft seal is more and more.