Corrosion prevention and scale inhibition treating method for shield pump

Abstract

The invention discloses a treatment method for anti-corrosion and anti-scaling of shielded pumps. The surface of main parts is cleaned by ultrasonic waves to remove surface impurities and residual oil stains, and then the parts are soaked in grease to form a protective oil film on the surface of the parts. It effectively protects the contact between the shielding sleeve and external substances, prevents the formation of scale, and the thickness of the grease is thin, which will not cause any adverse effects on the operation of the motor stator and rotor. The method does not need to perform special process treatment on parts, has low cost, high efficiency, and obvious anti-corrosion and scale-inhibiting effects.

Description

technical field [0001] The invention relates to the field of water pumps, in particular to a treatment method for anti-corrosion and anti-scaling of shielded pumps. Background technique [0002] Ordinary centrifugal pumps are driven by connecting the impeller shaft of the pump with the electric shaft through a coupling, so that the impeller and the motor rotate together to work, while the canned pump is a sealless pump, the pump and the drive motor are sealed in a sealed In the pressure vessel filled with the pumped medium, the pressure vessel has only static seals, and a set of wires provides a rotating magnetic field and drives the rotor. This structure cancels the rotary shaft sealing device of the traditional centrifugal pump, so it can be completely leak-free. Canned pumps are widely used in ground source heat pump air-conditioning circulating water systems, lithium bromide air-conditioning unit air-conditioning pumps, transformer oil pumps, fire water boosting systems...

AI Technical Summary

Problems solved by technology

[0003] However, shielded water pumps have problems such as the formation of scale, which causes the gap between the stator and the rotor to decrease, jams and even breaks the shielding sleeve, which seriously endangers the life of the pump and endangers the function of the supporting system.

In order to solve the scale problem, limited by the structure and space of the shielded pump, it is difficult for water pump manufacturers to find an effective solution. The current method is to smooth the inner wall of the shielding sleeve by grinding or electroplating, so that it is difficult for scale products to adhere to it. However, this method cannot fundamentally eliminate the generation of scale, and the process is complicated and the cost is high

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