A coal mine fire early warning device

Abstract

The application discloses a coal mine fire early warning device, which is characterized by the following: an upper and lower separated installation cover and a lower cover body are arranged, a battery, a pressure switch and other structures are arranged on the top of the lower cover body, and a regulating disc is arranged to play a smoke alarm role; the internal structure of the installation cover is optimized and improved, so that the battery and the pressure switch and other components are arranged on the top of the lower cover body, the complete separation of the installation cover and the lower cover body is not affected, the battery is convenient to disassemble and replace, a magnetic ring seat is arranged in the installation cover, the bottom of the regulating disc is connected to the inside of the lower cover body through a connecting rod, filter cloth is used to filter external dust, a light source is arranged on a supporting plate to cooperate with a light receiving ring to detect the surface dust accumulation of the filter cloth and transmit a signal to a motor, so that the rotation of a rotating ring is controlled to drive the regulating disc to move up and down, the filter cloth is shaken to tighten and relax, dust is removed, and the sensitivity of smoke detection is improved.

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