Explosion-proof sprinkler for underground coal mine

Abstract

An explosion-proof sprinkler, including a front frame, a rear frame, a main water tank, an exhaust gas treatment device, a water pump, and a water pump control system. The water pump control system includes a hydraulic pump, a hydraulic motor, a filter, an overflow valve, a manual reversing valve, Oil tank; the oil outlet of the above-mentioned hydraulic pump is respectively connected with the oil inlet of the overflow valve and the oil inlet P of the manual reversing valve. The hydraulic motor drives the water pump to work. The water pump control system includes the water pump solenoid valve, explosion-proof power supply , liquid level switch, the execution port A port of the manual reversing valve is connected with the oil inlet P port of the water pump solenoid valve, the execution port A port of the water pump solenoid valve is connected with the oil inlet port of the hydraulic motor, and the execution port of the water pump solenoid valve Both the port B and the oil return port T are connected to the fuel tank, the terminal of the water pump solenoid valve is connected to the explosion-proof power supply, and the connection line between the water pump solenoid valve and the explosion-proof power supply is connected in series with a liquid level switch. The invention can prevent the water pump from idling and can ensure that untreated waste gas is not discharged.

Description

technical field [0001] The invention relates to an explosion-proof sprinkler. Background technique [0002] An explosion-proof sprinkler is used to sprinkle water on the ground of the roadway in the coal mine. The Chinese authorized announcement number is CN203175614U. The utility model patent specification discloses a sprinkler for the coal mine. The sprinkler system uses a hydraulic motor to drive the water pump. The valve is used to control the start and stop of the hydraulic motor. When this kind of explosion-proof sprinkler is in use, the water tank often lacks water and the driver fails to find it and thus fails to close the manual reversing valve. burn out. In addition, the explosion-proof sprinkler cools and washes the exhaust gas from the engine through the exhaust gas treatment box, removes the carbon smoke and some harmful gases in the dissolved exhaust gas, and extinguishes the flame in the exhaust gas through the explosion-proof fence to ensure the safety of th...

AI Technical Summary

Problems solved by technology

When there is no water in the supplementary water tank, even if the water level of the large water tank is low, no water can be filled into the small water tank, resulting in the water level of the large water tank not reaching the standard, and the exhaust gas cannot be treated

Untreated waste gas is not allowed to be discharged underground in coal mines. For this reason, the above-mentioned utility model is equipped with a water level sensor in the large water tank to feed back the water volume of the large water tank. However, the structure of the waste gas treatment tank is cumbersome, and the sewage in the large water tank It will make it difficult for the float of the water level sensor to move up and down along the measuring tube, and the measuring signal is not accurate

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