Dust concentration detection device and measurement method for coal mine underground drilling construction

By using dust concentration detection devices in underground coal mine drilling operations, combined with Lambert-Beer's Law and automatic cleaning technology, the problems of real-time and accuracy of dust concentration monitoring have been solved, enabling real-time monitoring and precise control of underground dust concentration and protecting workers' health.

CN122306644APending Publication Date: 2026-06-30XIAN RES INST OF CHINA COAL TECH & ENG GRP CORP
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Patent Information

Application Number
CN202610421239.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-01
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

In existing technologies, it is difficult to achieve both accuracy and real-time performance in dust concentration monitoring during underground drilling operations in coal mines. This results in dust removal equipment being unable to achieve closed-loop control, affecting the construction environment and worker health.

Method used

A dust concentration detection device for underground drilling in coal mines is adopted, comprising a hemispherical glass body, a cleaning unit, an explosion-proof motor, a point light source, and a shadow sensor. The dust concentration is calculated using the Lambert-Beer law, and automatic cleaning is achieved by combining an arc-shaped brush and a nozzle, and the dust concentration is monitored in real time.

Benefits of technology

It enables real-time continuous measurement of dust concentration, avoids damage to the object being tested, adapts to the dim lighting environment underground, provides detection signal feedback, ensures detection accuracy and reliability, and protects the health of operators.

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Abstract

The invention provides a dust concentration detection device for coal mine underground drilling construction and a measurement method, the dust concentration detection device comprises a hemispherical glass body with an open top, a cleaning unit is arranged in the glass body, the cleaning unit comprises an annular cleaning frame arranged along the vertical direction, and the circle center of the cleaning frame is collinear with the axial center line of the glass body; a motor supporting frame is coaxially arranged at the top of the glass body, the motor supporting frame and the glass body are spliced into a spherical body with a hollow top, the bottom of the motor supporting frame is connected with the glass body, and the vertical top of the motor supporting frame is connected with a sleeve which is coaxially arranged. An explosion-proof motor is further coaxially installed in the sleeve, the bottom of an output shaft of the explosion-proof motor is connected with the top of the cleaning frame, and the output shaft of the explosion-proof motor drives the cleaning frame to rotate around the central axis of the glass body. A point light source is coaxially installed on the inner side of the top of the cleaning frame. A shadow sensor is further installed on the outer side wall of the bottom of the glass body. The device disclosed by the invention is high in response speed and can quickly capture instantaneous shadow change, so that real-time continuous measurement is realized.
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