Chemical pump uses: chemical pumps are widely used in chemical, petroleum, metallurgy, light industry, synthetic fiber, environmental protection, food, medicine and other sectors. It plays a great role in improving product quality, reducing running, running, dripping, leaking, preventing pollution and improving environment. So how does it achieve a high seal? This problem can be explained from the following two aspects.
1. seal form
For static sealing, usually only a sealing pad and a sealing ring two forms, and the sealing ring and O ring with the most widely used; for the dynamic seal chemical pump is seldom used in packing seal, mechanical seal, mechanical seal and single face and double face, balanced and unbalanced type, seal balance type for high pressure medium (usually pressure greater than 1.0MPa), double end sealing machine is mainly used for high temperature, easy crystallization, viscosity, particle and medium containing toxic volatile, double end mechanical seal should be injected into the isolation liquid to the sealing cavity, the pressure is generally higher than the medium pressure 0.07~0.1MPa.
2. sealing material
The chemical pump static sealing materials generally fluorine rubber, under special circumstances the use of PTFE material; mechanical seal ring is more critical of the material configuration is not the best of carbide carbide, high prices on the one hand, the hardness difference between the two is not reasonable, so the best features of discrimination under the medium.
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