A sealing device for a high-speed motor

Abstract

The invention relates to a sealing apparatus for a high-speed motor. The sealing apparatus comprises an oil sealing inner ring and an oil sealing outer ring, wherein the oil sealing inner ring is arranged on a motor main shaft in a sleeving manner; a ring of first concave-convex groove structure is arranged in the middle position of the outer wall of the oil sealing inner ring; a ring of second concave-convex groove structure matched with the first concave-convex groove structure is arranged on the inner wall of the oil sealing outer ring; the oil sealing outer ring is rotationally mounted on the periphery of the oil sealing inner ring through the matching between the first concave-convex groove structure and the second concave-convex groove structure; a positioning pin for fixing the oil sealing outer ring on a motor oil cover is also arranged on the oil seal outer ring; and the positioning pin enables the oil sealing outer ring not to rotate along the oil sealing inner ring in the operating of the motor. The sealing apparatus has the beneficial effects of greatly reinforcing the sealing effect and reducing direct friction on the main shaft by oil sealing, thereby prolonging the service life of the main shaft.

Description

technical field [0001] The invention relates to the field of sealing, in particular to a sealing device for a high-speed motor. Background technique [0002] Generally, a sealing device is required to seal the motor shaft, and the existing sealing devices have the following defects: [0003] 1. The sealing device will increase the wear of the main shaft, thereby reducing the service life of the main shaft; [0004] 2. The sealing effect is not good; [0005] 3. The built-in fan blade of the motor can generate negative pressure during operation, and the pressure finally formed by the negative pressure has a destructive effect on the inner cavity of the sliding bearing housing, resulting in oil leakage. Contents of the invention [0006] To sum up, in order to overcome the deficiencies of the prior art, the technical problem to be solved by the present invention is to provide a sealing device for a high-speed motor. [0007] The technical solution of the present invention...

AI Technical Summary

Problems solved by technology

[0003] 1. The sealing device will increase the wear of the main shaft, thereby reducing the service life of the main shaft;

[0004] 2. The sealing effect is not good;

[0005] 3. The built-in fan blade of the motor can generate negative pressure during operation, and the pressure finally formed by the negative pressure has a destructive effect on the inner cavity of the sliding bearing housing, resulting in oil leakage

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