Motor protector

Abstract

The invention relates to the technical field of motors, and specifically relates to a motor protector. The motor protector comprises a rotation shaft, an oil seal, a housing and a dust cover. The motor protector is characterized in that the dust cover is arranged outside the housing; a ring-shaped convex and a ring-shaped concave are sequentially arranged on an outer end face of the housing from the center towards the external, and a concave and a convex to correspondingly cooperate with the ring-shaped convex and the ring-shaped concave are arranged on an inner end face of the dust cover; by the concave and the convex on the inner end face of the dust cover cooperating with the ring-shaped convex and the ring-shaped concave on the outer end face of the housing, the direct impact of waterflow and direct entering of dust are prevented; the oil seal is a temperature-resistant fluorubber framework oil seal; and the inner diameter of the temperature-resistant fluorubber framework oil seal is in a small-gas fit with the rotation shaft, while the outer diameter is in a tight fit with the housing, so that the invasion of water and dust is completely prevented, and a high protection grade is achieved. By adopting the above structure, the motor protector ensures the motor to be able to work in an everchanging environment for a long time, and has the advantages of reasonable structure, good sealing performance, high protection grade, and reliable operation.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a motor protection device. Background technique [0002] In the current situation of increasingly fierce competition in electromechanical products, improving the motor protection level and the long-term and reliable operation of the motor in a changeable environment have become an important means to improve the competitiveness of enterprises. The protection level is an important indicator of motor parameters. The assessment of the use environment and protection plays a vital role. [0003] At present, the existing inner rotor motors can only prevent the intrusion of tools, wires and similar small foreign objects with a diameter or thickness greater than 1.0mm from contacting the internal parts of the electrical appliance, and prevent water splashed from all directions from invading the electrical appliance and causing damage. damage. Traditional motors usually have a felt seal ...

AI Technical Summary

Problems solved by technology

[0003] At present, the existing inner rotor motors can only prevent the intrusion of tools, wires and similar small foreign objects with a diameter or thickness greater than 1.0mm from contacting the internal parts of the electrical appliance, and prevent water splashed from all directions from invading the electrical appliance and causing damage. damage

Traditional motors usually have a felt seal ring between the shell and the shaft or do not add any protection at all. This seal is not only easy to deform, but also has an excessive gap between the shell and the shaft, causing dust to enter, and water leakage. Poor, can not isolate the intrusion of water, and the single-layer sealing protection performance is low, for the motor installed on the deck, it is easy to be damaged by the invasion of large waves, and cannot meet the requirements of high protection performance

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