How to choose the chemical pump mechanical seal?

How to choose the chemical pump mechanical seal? 2016 - 9 - 17 is the forever pursuit of chemical equipment without leakage, it is the mechanical seal and contributed to the magnetic force pump used to pump application is increasingly expanded. But really no leakage is still a long way to go, such as magnetic pump life problem, the material of sleeve of pitting corrosion problem, the reliability of static sealing and so on. Now on the sealing some basic situation introduction is as follows: 1. For static seal, seal form usually only seal and seal two forms, and sealing ring with o-rings used most widely; For dynamic seal, chemical pump packing seal, is scarcely used to is given priority to with mechanical seal, mechanical seal and single face and double face, equilibrium and non-equilibrium model, equilibrium model is suitable for the kettle with the mechanical seal of high pressure medium sealing ( Usually refers to the pressure is greater than 1. 0MPa) , double end face machine is mainly used for high temperature, easy to crystallization, viscosity, and toxic volatile medium including particle, double end face machine sealing should be added spacer to the sealed cavity, the pressure is generally higher than that of medium pressure 0. 7 ~ 0. 1MPa。 2. Sealing material chemical static magnetic pump seal material generally adopts the fluorine rubber, special situation to adopt ptfe material; Mechanical seal ring materials configuration is the key activity, not carbide carbide is best, the price is high on the one hand, both no hardness difference is not reasonable, so it's best to discriminate based on the medium. Author: wenzhou mill machinery equipment co. , LTD. Address: key words: mechanical seals, pumps with mechanical seal, kettle with mechanical seal