Mining material detection circuit and device

Abstract

The invention discloses mining material detection circuit and device, belonging to the technical field of material detection, and providing mining material detection circuit and device which have advantages of large work range, energy saving, and capability of alarming at both a short circuit state and an open circuit state. In the mining material detection circuit, an output end of a transformer is sequentially connected with a control circuit, an indicating circuit, a tilting switch and a diode; the control circuit is formed by a parallel connection between a direct current relay and a capacitance; the indicating circuit is formed by a parallel connection of two circuits, wherein one circuit is formed by a series connection between a normally closed contact of the direct current relay and a first indicating light, and the other circuit comprises a second indicating light; and the indicating circuit is in a parallel connection with a reset circuit. The invention is applied to material belt type conveying equipment in the fields of machinery, energy source, electric power, transportation and the like.

Description

technical field [0001] The mine material detection circuit and device of the invention belong to the technical field of material detection. Background technique [0002] The tilt switch and control panel produced by Ramsey Company in the United States are mainly used on industrial and mining belt conveyors in coal mines and coal washing plants to prevent the material from being blocked by the blanking chute and cause the material to be brought into the bottom belt and damage the equipment. In production practice It was found that after the probe was smashed by the material, the cable caused a short circuit and the material was blocked, resulting in a major accident that stopped production for more than 10 hours. Due to the harsh working environment of industrial and mining, high humidity, high dust, and miscellaneous staff, the material detection device often suffers from decreased insulation resistance of connecting lines, short circuits and open circuits, which seriously a...

AI Technical Summary

Problems solved by technology

[0002] The tilt switch and control panel produced by Ramsey Company in the United States are mainly used in industrial and mining belt conveyors in coal mines and coal washing plants to prevent the material from being brought into the bottom belt and damage the equipment due to the blockage of the blanking chute. In production practice It was found that after the probe was smashed by the material, the cable caused a short circuit and the material was blocked, resulting in a major accident that stopped production for more than 10 hours

Due to the harsh working environment of industrial and mining, high humidity, a lot of dust, and miscellaneous staff, the material detection device often has a decrease in the insulation resistance of the connecting line, short circuit and open circuit, seriously affecting production and causing unsafe hidden dangers

In addition, under the working range of existing products, when the insulation resistance of the line drops to 1500KΩ, it will not work normally, and the existing step-down method uses load step-down, which consumes a lot of energy.

Sometimes when the material accumulation reaches the warning line, the probe does not tilt when it is held up by the material, but there is no tilt alarm

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