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A labyrinth seal structure between motor shaft and front end cover

A labyrinth seal and motor shaft technology, applied in the direction of electrical components, electromechanical devices, electric components, etc., can solve the problems of poor sealing effect, inapplicability, and reduced motor efficiency, so as to prolong the service life, improve the sealing effect, and improve the efficiency of the motor. efficiency effect

Active Publication Date: 2018-06-08
BEIJING ZHONG CHUANG HU LIAN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages are: the sealing structure is composed of a first-level labyrinth seal and a first-level rubber sealing ring seal, and the sealing effect is poor; in addition, the rubber sealing ring seal is a contact seal, and due to the existence of friction, it is easy to generate additional torque and reduce the efficiency of the motor. , the sealing structure cannot be applied to motors that require high-speed rotation or long service life

Method used

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  • A labyrinth seal structure between motor shaft and front end cover
  • A labyrinth seal structure between motor shaft and front end cover
  • A labyrinth seal structure between motor shaft and front end cover

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Embodiment Construction

[0015] The present invention will be described in further detail below. see Figure 1 to Figure 5 , a labyrinth seal structure between the motor shaft and the front end cover, including a shaft 5, a seal ring 4 and a front end cover 3; A cross-section is a rectangular ring, and there is an annular notch 4a with a rectangular cross-section near the left end on the outer cylindrical surface of the sealing ring 4; it is characterized in that:

[0016] The rotating shaft 5 is a stepped shaft with a stepped end face 5b, and the outer diameter of the output end 5a on the left side of the stepped end face 5b is smaller than the shaft diameter on the right side of the stepped end face 5b;

[0017] The central hole of the front end cover 3 is divided into three sections from right to left, which are the shaft passing section 3a, the inner sealing section 3b and the outer labyrinth section 3c. The outer diameter of the seal ring 4; the aperture of the inner seal section 3b is greater ...

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Abstract

The invention belongs to the motor structure design technology and relates to an improved motor rotation shaft and front end cover labyrinth type sealing structure. The motor rotation shaft and front end cover labyrinth type sealing structure is characterized in that a rotation shaft (5) is provided with a step end face (5b), a center hole of a front end cover (3) is divided into three segments from right to left, including a shaft penetrating segment (3a), an inner sealing segment (3b) and an outer labyrinth segment (3c) respectively, a labyrinth ring (2) is a circular ring, and a sealing ring (4) is prepared by a metal material. The improved motor rotation shaft and front end cover labyrinth type sealing structure is advantaged in that the sealing effect is improved, a friction torque of the sealing ring is reduced, motor efficiency is improved, and service life of the sealing rind is prolonged.

Description

technical field [0001] The invention belongs to the motor structure design technology and relates to the improvement of the labyrinth sealing structure of the motor shaft and the front end cover. Background technique [0002] The sealing structure of the motor shaft and the front end cover affects the service life and safety of the motor. The Chinese patent application "Sealing structure between the motor shaft and the motor cover" (CN201410010078.1) discloses a labyrinth of the motor shaft and the front end cover. The sealing structure is composed of a motor shaft, a motor cover, a sealing ring, an elastic collar and a shroud. Its disadvantages are: the sealing structure is composed of a first-level labyrinth seal and a first-level rubber sealing ring seal, and the sealing effect is poor; in addition, the rubber sealing ring seal is a contact seal, and due to the existence of friction, it is easy to generate additional torque and reduce the efficiency of the motor. , the s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K5/124
CPCH02K5/124
Inventor 杨卫权张东平
Owner BEIJING ZHONG CHUANG HU LIAN TECH CO LTD