Chemical pump uses: chemical pumps are widely used in chemical, petroleum, metallurgy, light industry, synthetic fiber, environmental protection, food, medicine and other departments, in order to improve product quality, reduce the run, run, drip, leak, to prevent pollution, improve the environment, play a significant role. How is it to achieve high sealing state? This problem can be explained from the following two aspects.

    1 seal form

    For static sealing, usually only gasket and sealing ring in two forms, while the seals and O-rings used most widely; for dynamic seal, chemical pump rarely with packing seal, mechanical seals based, mechanical seal and single face and double end, balanced and non balanced type, balance type for medium to high pressure seal (usually refers to the pressure is greater than 1.0MPa), double end face mechanical seal is mainly used for high temperature, easy to crystallize, viscosity, containing particles and toxic volatile medium, double end face mechanical seal should inject liquid isolation to seal in the cavity, the pressure of high to medium pressure 0.07~0.1MPa.

    2 sealing material

    Chemical pump static sealing materials commonly used fluorine rubber, special use of PTFE material; mechanical seal ring movement of the material configuration is the key and not hard alloy of cemented carbide is best, the price is high on the one hand, the two are not hardness difference is not reasonable, the best discrimination on the grounds of dielectric characteristics of treat.