When selecting chemical centrifugal pump seal performance judgment standard

chemical pump is the forever pursuit of chemical equipment without leakage, it is the request to the application of magnetic water pump and screen pump shadowing is increasingly expanded. Do not leak, however true is there is still a long way to go, such as magnetic pump and screen of sleeve from the pump screen all sets of life problem, the material of pitting corrosion problem, the reliability of static sealing and so on.

chemical pump delivery is corrosive, toxic volatile or medium, so the sealing performance is one of the standard to measure chemical pump is good or bad. When choosing chemical pump, should refer to the following standards.

1, the seal form with static seal and dynamic seal.

for static seal, usually in the form of two kinds of sealing ring and gasket sealing, and in the sealing ring with o-rings applied more widely; For dynamic seal, seldom using packing seal, is the main mechanical seal on it, and in mechanical seal and points of single face and double face, equilibrium and non equilibrium. The balance model more suitable for high pressure medium sealing, it usually refers to the pressure is greater than 1. 0MPA。 And double end face sealing machine is is 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 is zero. 7 ~ 0. 1MPA。

2, sealing material.

chemical pump the static sealing materials normally use fluorine rubber material, in special cases will adopt ptfe material; Mechanical seal of dynamic and static ring materials carefully, and not all of it is good to use cemented carbide. If all choose carbide, so the price will be high.

in general are static ring hard, soft ring. Such as silicon carbide and graphite. Is relatively affordable, only in special high temperature, and medium particles, dynamic and static ring to choose hard of hard material. Should be depending on the specific situation.

chemical pump is widely used in various fields of chemical industry, the current domestic manufacturers of chemical pump mainly include: IH stainless steel chemical pump, IHF fluorine plastic chemical pump, the FSB fluorine plastic chemical pump, CQB, CQ chemical magnetic pump, magnetic water pump FZB chemical self-priming pump, etc. These chemical pump is widely used in chemical industry, metallurgy, pharmacy, to foil etc, all have important applications.

Nowadays, the adoption of submersible pump in pool cover drain pump industry is quite common.
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