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sealing problems of chemical pump

It is this requirement led to shield pump Magnetic pump and expanding the application. But really no leakage is still a long way to go, such as Magnetic pump shield pump shield isolation kits and sets of life issues, pitting the material issues, problems, and so the reliability of static sealing. Is to seal some of the basic aspects of the situation briefly as follows:

    1. Seal type for static seal, usually only two types of gaskets and seals, and O-ring seals the most widely used; for dynamic sealing, chemical pump seal packing seldom used, mainly by mechanical seal , mechanical seals have a single face and double face, balanced and unbalanced type of points, balanced seals for high-pressure medium (usually pressure greater than 1.0MPa), double-end machine is mainly used for sealing high-temperature and crystallization, with viscosity, with particles and toxic volatile media, double-end mechanical seal chamber should be sealed into the isolation liquid, the pressure is generally higher than the medium pressure 0.07 ~ 0.1MPa.

    2. Sealing material chemical pump static sealing materials commonly used fluorine rubber, special circumstances, it uses PTFE material; mechanical seal ring material configuration is more static key, not the hard alloy of cemented carbide for the best, high prices are On the one hand, the hardness difference between the two are not unreasonable, so the best features of differential treatment according to the media.

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2012-06-04

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