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What are the advantages and disadvantages of shielded pumps worth mentioning
2023/02/16
Advantages of shielded pump.
1、Totally enclosed. There is no dynamic seal on the structure, only static seal at the pump shell, so it can be completely leak-free, especially suitable for conveying flammable, explosive, precious liquids and toxic, corrosive and radioactive liquids.
2、High safety. The rotor and stator each have a shielding sleeve so that the motor rotor and stator do not come into contact with the material, even if the shielding sleeve is broken, there is no danger of external leakage.
3、Compact structure and small area. The pump and the motor are a whole unit, so there is no need to find the center for disassembly and assembly. Low requirements for base and foundation, and less daily maintenance workload, low maintenance costs.
4、Smooth running, low noise, no need to add lubricating oil. Since there is no rolling bearing and motor fan, no need to add lubricating oil, and low noise.
5、Wide range of use. For high temperature, high pressure, low temperature, high melting point and other working conditions can meet the requirements.
Disadvantages of shielded pump.
1, because the shield pump uses sliding bearings, and with the medium being transported to lubricate, so the poor lubrication of the medium should not be shielded pump transport. Generally suitable for shielding pump medium viscosity of 0.1 ~ 20mPa.s.
2, shield pump efficiency is usually lower than the single-end mechanical seal centrifugal pump, and double-end mechanical seal centrifugal pump is roughly equivalent.
3, a long time in the case of low flow operation, shielding pump efficiency is low, will lead to heat, so that the liquid evaporates, and cause the pump dry rotation, thus damaging the slide bearing.
Professional manufacturer of shielded deep well pump
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