Shielding type permanent-magnetism high-speed motor of submersible pump

Abstract

The invention relates to a shielding type permanent-magnetism high-speed motor of a submersible pump, and belongs to the technical field of submersible pumps. The motor comprises a motor casing, upperand lower end caps, a rotor shaft, a rotor and a stator, the stator is fixed to the inner wall of the motor casing, a shielding sleeve is arranged between the stator and rotor, shielding seats are arranged on and under the stator respectively, the shielding sleeve is fixedly connected to the shielding seats by cold welding, the shielding sleeve and seats are combined with the inner wall of the motor casing to form a shielding cavity, and the stator is positioned in the shielding cavity. The stator is enclosed in the independent space, threads of the shielding sleeve serve as radiating ribs, the rotor drives water current to rotate during work, the threads guide rotation of the water current to certain extent, the water current passes through the shielding sleeve at a higher speed, the heat exchange efficiency is improved, the stator is prevented from generating heat or being overheating effectively, the working efficiency of the motor is improved, loss of electric energy is reduced, and the service life is prolonged.

Description

technical field [0001] The invention belongs to the technical field of submersible pumps, in particular to a shielded permanent magnet high-speed submersible pump motor. Background technique [0002] The motor used in the submersible pump needs to be soaked in water, and the stator needs special waterproof treatment. For example, in the submersible pump motor described in the authorized announcement number CN201608595U, the stator is sealed by waterproof sealant, and the outer layer of the waterproof sealant is provided with Waterproof liner, although this method can improve the waterproofness of the stator, but it is too tightly sealed, so that the heat generated by the stator cannot be dissipated in time. [0003] From the patent document whose publication number is CN101671426A, it can be known that the epoxy resin composition can be poured onto the stator to play a waterproof role, and this kind of sealant used for waterproofing generally has the properties of insulation...

AI Technical Summary

Problems solved by technology

[0002] The motor used in the submersible pump needs to be soaked in water, and the stator needs special waterproof treatment. For example, in the submersible pump motor described in the authorized announcement number CN201608595U, the stator is sealed by waterproof sealant, and the outer layer of the waterproof sealant is provided with Waterproof liner, although this method can improve the waterproofness of the stator, but it is too tightly closed, so that the heat generated by the stator cannot be dissipated in time

[0003] From the patent document whose publication number is CN101671426A, it can be known that the epoxy resin composition can be poured onto the stator to play a waterproof role, and this kind of sealant used for waterproofing generally has the properties of insulation, good sealing and heat resistance. characteristics, so it can be seen from these characteristics that in the document of CN201608595U, even if the technical solution is provided with water inlet holes and water outlet cooling holes, the cold water can flow through the inside of the casing and then be discharged from the water outlet cooling holes, but due to the waterproof sealing The glue has heat-resistant properties, and it belongs to the resin material, which has a certain heat insulation performance, which leads to its poor thermal conductivity. After the wrapped stator heats up, the heat cannot be conducted in time, and the cold water flowing through it cannot take away the heat of the stator. , the motor is prone to heat, the working efficiency will be reduced, the power consumption will be increased, and it will be damaged after overheating, and the service life will be shortened

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