Mining material detection circuit and device

A technology for material detection and mining, applied in the direction of measuring devices, measuring electricity, measuring electrical variables, etc., can solve problems such as unsafe hidden dangers, miscellaneous staff, short circuits, etc., to achieve broadened working range, simple structure, and reduced energy consumption Effect

Inactive Publication Date: 2010-05-26
张学文
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Mining material detection circuit and device

Examples

Experimental program
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Embodiment Construction

[0019] Such as figure 1 As shown, the mining material detection circuit includes: transformer 1, control circuit 2, indicator circuit 3, tilt switch 4 and diode 5, wherein the power supply is step-down through the transformer 1 and is sequentially connected with the control circuit 2, indicator circuit 3, and tilt switch 4 Connected with the diode 5, the control circuit 2 is composed of a DC relay 6 and a capacitor 7 connected in parallel, and the indicator circuit 3 is composed of two circuits connected in parallel, one of which is the normally closed contact 8 of the DC relay 6 and the second One indicator light 9 is connected in series, the other is composed of a second indicator light 10, and a reset circuit 11 is connected in parallel beside the indicator circuit 3. The reset circuit 11 is composed of a conventional reset switch, and the power supply is industrial voltage 380V or household power. 220V, both are sinusoidal AC voltages, which are reduced to a safe voltage o...

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PUM

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F23/00G01R31/02B65G43/08
Inventor 张学文张昊
Owner 张学文
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