CN2140111Y

CN2140111Y - Dust anti-explode case for motor

Info

Publication number: CN2140111Y
Application number: CN 92221730
Authority: CN
Inventors: 金行高; 陈德刚; 姚清华; 熊桂珍; 黄文胜; 向小平; 余庆; 唐贤明
Original assignee: LESHAN MOTOR FACTORY SICHUAN PROV
Current assignee: LESHAN MOTOR FACTORY SICHUAN PROV
Priority date: 1992-11-17
Filing date: 1992-11-17
Publication date: 1993-08-11
Anticipated expiration: 2002-11-17

Abstract

The utility model provides a dust anti-explosion case for a motor. A seal structure is utilized between an outer shell and the inner part of the motor, the inner part of the motor and a wire outlet. Simultaneously, the insulation level of the motor is upgraded to an F level, and the surface temperature of a running outer shell of the motor is lowered. Therefore, explosive dust can be completely prevented from entering the inner part of the motor, and the motor can operate safely in an explosive dust environment.

Description

Dust anti-explode case for motor

The utility model belongs to the casing of motor, the quick-fried shell of a kind of motor dirt tight defense.

According to the regulation of China Ministry of Labor and Personnel about explosion hazard area electric equipment safety regulations, the environment that explosive substance (gas, dust) arranged, must use electrical apparatus for explosive atmospheres, motors such as domestic existing YB flame-proof type, YA INCREASEDSAFETY only are applicable to the place that damp exists, and common y series motor is neither dustproof not explosion-proof yet, because of motor has generation in the explosion accident that the dust atmosphere operation causes more.

The purpose of this utility model is to solve the problem of motor in the operation of dust (fiber) Environmental security.

The purpose of this utility model realizes by the quick-fried design of shell scheme of following motor dirt tight defense.It has mainly taked following measure on the shell hermetically-sealed construction:

1) sealing between shell and internal structure of motor.

Between stator and end cap, establish sealing ring,

The dirt oil sealing of between rotor and motor bearings lid, rotor and end cap, setting up defences,

All with bolt that motor internal communicates on establish sealing ring.

2) sealing of motor internal and line outlet.

With sealing gasket and the stifled sealing of outlet, line outlet seals with sealing ring and hold down gag, outlet cassette holder and the sealing of outlet box sealing cushion for cover between stator cavity and terminal box cavity.

3) in design, improve the class of insulation, copper cash, insulating paper, impregnating varnish, lead-out wire are all brought up to the F level.

Fig. 1 is quick-fried shell mechanism schematic diagram of motor dirt tight defense and summary figure.

Fig. 2 is the close structure embodiment 1～3 of electric motor end cap dirt.

Fig. 3 is the close structural representation of terminal box dirt.

1, rotor; 2, oil sealing; 3, end cap; 4, sealing ring; 5, stator; 6, terminal box; 7, dust cover; 8; Bearing; 9, hold down gag; 10, sealing gasket; 11, outer bearing cover; 12, inside cap; 13, outlet is stifled; 14, the outlet cassette holder; 15, the outlet lid; 16, stator cavity; 17, the outlet box cavity; 18, line outlet; 19, bolt.

Also the utility model embodiment shown in the accompanying drawing, the quick-fried shell mechanism of dirt tight defense that the YF132 motor adopts.In conjunction with the accompanying drawings, be described further below:

1) sealing between shell and motor internal.Between stator 5 and end cap 3, add an O RunddichtringO 4; Between rotor 1 and end cap 3, add an anti-dust seal 2; On the bolt 19 that communicates with motor internal, add an O RunddichtringO 4.So, just can stop explosive dust to enter motor internal from shell.

2) sealing of motor internal and line outlet.Between the cavity of the cavity of stator 5 and terminal box 6, with sealing gasket 10 and stifled 13 sealings of rubber outlet, line outlet 18 usefulness rubber rings 4 and hold down gag 9 seal;

Outlet cassette holder

14 and 10 sealings of outlet lid 15 usefulness sealing gaskets.

The utility model can stop explosive dust (fiber) to enter motor internal fully, and the case surface temperature is lower than the national Specification value in the time of making the motor operation simultaneously.With the YF132 motor is example, and degree of protection reaches the close shell of IP65 dirt, 91.1 ℃ of casing maximum surface temperatures, and motor can move in dust (fiber) Environmental security fully.

Claims

1, the quick-fried shell of motor dirt tight defense is hermetically-sealed construction, it is characterized in that: adopted sealing ring and oil sealing sealing structure between shell and the internal structure of motor; Add seal between motor stator cavity and the terminal box cavity, line outlet seals with sealing ring and hold down gag; The class of insulation of the copper cash of motor, insulating paper, impregnating varnish and egress line is the F level.

2, as the quick-fried shell of motor dirt tight defense as described in the right 1, seal between shell and internal structure of motor and be characterised in that: establish sealing ring between stator and the end cap; The dirt oil sealing of setting up defences between rotor and motor bearings lid, rotor and end cap; With establish sealing ring on the bolt that motor internal communicates.

3,, seal between stator cavity and the terminal box cavity and be characterised in that as the quick-fried shell of motor dirt tight defense as described in the right 1: between stator cavity and the terminal box cavity with sealing gasket and the stifled sealing of outlet; Line outlet seals with sealing ring and hold down gag; Outlet cassette holder and the sealing of outlet box sealing cushion for cover.