A mine explosion-proof and intrinsically safe combined variable frequency starter

Abstract

The utility model provides a kind of mining explosion-proof and intrinsically safe combination frequency starting device, belong to mining electrical equipment field;Solve the existing mine frequency starting device existing poor explosion-proof performance, low heat dissipation efficiency, structure layout is unreasonable and low operation safety and other problems;Including shell, shell interior is separately provided with main cavity, incoming line cavity and outgoing line cavity, incoming line cavity and outgoing line cavity are respectively located in the two sides of main cavity, main cavity is equipped with main loop device, control loop device, power frequency loop module and frequency converter box, each module is connected by standardization interface;The front of shell is equipped with display, the button for controlling motor start-stop, the knob for controlling motor forward-reverse and the change-over switch for speed adjustment, the front of shell is also equipped with handle assembly and door interlocking mechanism;The utility model is applicable to the environment containing gas, coal dust and other explosive hazardous media in underground coal mine, and can control the frequency speed regulation of belt conveyor and scraper conveyor.

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