Blasting mining face after-blasting wind and water joint mist spraying automatic opening device and mounting method

Abstract

The invention discloses a blasting mining face after-blasting wind and water joint mist spraying automatic opening device. The opening device comprises a purifying water curtain device and a control circuit; the purifying water curtain device comprises a spraying head, a wind water pipe, a wind belt and a water belt; the spraying head is communicated with the wind belt and the water belt through the wind water pipe, the control circuit comprises a pressure sensitive sensor and a time relay, the normally-open contact of the pressure sensitive sensor is in series connection with a coil of the time relay, the normally-open contact of the time relay is in parallel connection with the normally-open contact of the pressure sensitive sensor, the coil of the time relay is electrically connected with electric adjusting ball valves in the wind belt and the water belt through wires, and is used for starting and stopping the electric adjusting ball valves, and therefore the wind belt and the waterbelt can be conducted or stopped. Dust-contained wind flow in a mine tunnel is purified, dust can be removed in a full coverage manner, through the device, passing of persons in the tunnel is not affected, purified water flow is thoroughly drained through a water draining ditch, and the drained water can be recycled.

Description

technical field [0001] The invention relates to a method for reducing dust at the first time after blasting in blasting mining working face, in particular to an automatic opening device for wind and water combined spraying in blasting mining working face, which belongs to the technical field of underground dust removal. Background technique [0002] With the continuous improvement of coal mine safety and quality standardization construction, the management of underground dust prevention is becoming more and more important, especially the flying dust after blasting on the blasting face is the main cause of dust pollution in the roadway. However, due to the "Coal Mine Safety Regulations", No one is allowed to enter the blasting warning area within 30 minutes after blasting the blasting face, so at present, the blasting face can only be manually turned on the spray sprinkler device in the roadway after 30 minutes of blasting and then entering the alert area Dust reduction treat...

AI Technical Summary

Problems solved by technology

[0002] With the continuous improvement of coal mine safety and quality standardization construction, the management of underground dust prevention is becoming more and more important, especially the flying dust after blasting on the blasting face is the main cause of dust pollution in the roadway. However, due to the "Coal Mine Safety Regulations", No one is allowed to enter the blasting warning area within 30 minutes after blasting the blasting face, so at present, the blasting face can only be manually turned on the spray sprinkler device in the roadway after 30 minutes of blasting and then entering the alert area Dust reduction treatment, but the defect of this method is that: 1. The time for sprinkling water and dust reduction in the roadway is greatly prolonged, and the flying dust not only easily causes personal injury to construction workers, but also easily causes safety accidents such as gas and coal dust explosions; 2. , Because the operator forgot to turn off the spray device, resulting in serious water accumulation in the roadway

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