The efficiency of the magnetic centrifugal pump is determined by the following main elements:
1, The hydraulic model is related to the efficiency of the pump
| The efficiency tables of the two hydraulic models (hydraulic models of the pump casing and impeller) are shown in the test report
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2, The resistance of the isolation sleeve is related to the efficiency of the pump
The biggest impact on the efficiency of the magnetic pump is the eddy heat generated by the isolation sleeve. When the magnetic pump is running, the external magnetic steel will generate eddy heat driven by the internal magnetic steel. The removal of these eddy heat consumes a certain amount of power, so the isolation sleeve made of non-magnetic materials has the highest efficiency. Metal magnetic pump isolation sleeve, generally made of stainless steel, good use of Hastelloy, or titanium alloy material. Because of the stainless steel isolation sleeve, the price is much lower than Hastelloy and titanium alloy, many manufacturers use stainless steel.
Efficiency test table of two kinds of materials See test report
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3, Plastic magnetic pump pump shell
Because the plastic magnetic pump is used to transport corrosive chemical media, the material of the pump shell is mostly plastic. The form of the pump shell is lined plastic and rotomized, and the lining plastic is divided into loose and tight lining. Plastic-lined pump housing is less efficient than rotomolding.
The efficiency of the pump is related to the rotomizing process and the lining process
| The efficiency table of the pump housing produced by the two processes See test report
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4, The quality of magnetic materials is related to the efficiency of the pump
The magnetic steel available on the magnetic centrifugal pump is: the best performance magnetic steel is rare earth magnetic steel, and the poor performance magnetic steel is ferrite, aluminum nickel cobalt and so on. The internal and external magnetic steel uses rare earth permanent magnet steel with high performance, and the volume of the components is small and the resistance is small when rotating, and the efficiency is high. If the use of low magnetic properties of ferrite magnetic steel or aluminum nickel cobalt magnetic steel, compared with rare earth permanent magnet steel, its efficiency is 5-8% lower.
From the above three tables can be seen: the use of advanced hydraulic model than the general hydraulic model, can improve the efficiency of the pump about 4%; The efficiency of the pump can be improved by about 14% by using the isolating sleeve with high resistivity than the isolating sleeve with low resistivity. The pump housing with plastic-coated technology can improve the efficiency of the pump by about 9% compared with that with plastic-lined technology. Using magnetic materials with high performance than low performance magnetic materials, the efficiency of the pump can be increased by 5-8%.
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