Mining explosive-proof electromotor anti-explosion reducing valve

Abstract

The invention discloses a mining explosive-proof electromotor anti-explosion reducing valve. Negative pressure produced by rotation of an electromotor is released, and accumulated condensate water produced in the electromotor is discharged. The mining explosive-proof electromotor anti-explosion reducing valve comprises a valve outer sleeve, a valve body, industrial leather seal rings, a valve core, O-shaped sealing rings, compressed springs, flat gaskets, elastic baffle rings and a valve cap, wherein the valve outer sleeve is communicated with the inner cavity of the electromotor, the valve body is in tight thread fit with the valve outer sleeve, and the end portions of the valve body are sealed by the industrial leather seal rings. The valve core, the compressed springs, the flat gaskets and the elastic baffle rings are all assembled inside the cavity of the valve body. Outer threads at the top of the valve core are in tight fit with inner threads of the valve cap, and the end surface between the valve cap and the valve body is sealed through one O-shaped sealing ring. The matching surface of the bottom of the cavity of the anti-explosion reducing valve body and the valve core is sealed through another O-shaped sealing ring. The inner side of the valve body is in clearance fit with the valve core. The mining explosive-proof electromotor anti-explosion reducing valve has the advantages of being compact and simple in structure, convenient to install, and obvious in pressure reducing effect, greatly improving safety of the electromotor, greatly prolonging the service life of the electromotor, and having high economical efficiency.

Description

technical field [0001] The invention relates to the field of mine flameproof motors, in particular to an explosion-proof decompression valve structure for mine flameproof motors. Background technique [0002] In order to prevent mine explosion-proof motors from operating underground in coal mines, the internal temperature rise of the motor is high when the motor is running at high speed. After stopping for a period of time, condensation water will be generated on the inner wall of the motor frame shell. The longer the motor is used, the more condensation will occur. The more water accumulates, with the high-speed operation of the motor, the temperature inside the motor base shell will rise, and the condensed water will vaporize and generate pressure. Since the inside of the motor shell is closed, the condensed water cannot be discharged outside the motor, and the condensed water will The pressure generated by gasification poses a threat to the operation and safety of the mot...

AI Technical Summary

Problems solved by technology

[0002] In order to prevent mine explosion-proof motors from operating underground in coal mines, the internal temperature rise of the motor is high when the motor is running at high speed. After stopping for a period of time, condensation water will be generated on the inner wall of the motor frame shell. The longer the motor is used, the more condensation will occur. The more water accumulates, with the high-speed operation of the motor, the temperature inside the motor base shell will rise, and the condensed water will vaporize and generate pressure. Since the inside of the motor shell is closed, the condensed water cannot be discharged outside the motor, and the condensed water will The pressure generated by gasification poses a threat to the operation and safety of the motor, reducing the service life of the motor

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