Suction-induced convection control wind and mist curtain device and method for fully mechanized mining face

Abstract

The invention discloses a fully-mechanized mining working face suction-induced convection-type dust-removal air-mist curtain device and method, belonging to the technical field of coal mine dust removal. It includes a pull-out dust cleaning fan, a fan-shaped shroud, an external spraying device for the shearer and a spraying device between the hydraulic support frames. On both sides of the fuselage and at the two hydraulic supports before moving the frame and at the two hydraulic supports on the leeward side of the front drum of the coal mining machine, spray at a certain angle to form a corresponding fog curtain, and carry out a large amount of dust generated by moving the frame and cutting coal. Atomization for dust reduction. At the same time, two extractor-type dust-cleaning fans installed symmetrically near the rocker arm of the shearer body are turned on. The air suction ports are respectively facing the front and rear drums of the shearer, and the fan-shaped shroud is connected to the air outlet. The invention has important practical significance for improving the working environment of workers in the fully mechanized mining face and ensuring the safe production of coal mines.

Description

technical field [0001] The invention relates to the technical field of dust removal in coal mines, in particular to a suction-induced convection control dust removal wind and mist curtain device and method for a fully mechanized mining face. Background technique [0002] Coal has always been the largest energy support in my country. Among the proven petrochemical energy reserves in the country, oil and natural gas account for only 6%, and the remaining 94% are coal. The coal industry has made outstanding contributions to the long-term and rapid development of the national economy. With the continuous improvement of the level of comprehensive mechanization, the problem of large dust production is becoming more and more serious. According to the measurement data, without turning on the dust suppression equipment, the dust generated by the simultaneous operation of various processes in the fully mechanized mining face can exceed 4000mg / m 3 , Far exceeded the national standard, ...

AI Technical Summary

Problems solved by technology

With the continuous improvement of the level of comprehensive mechanization, the problem of large dust production is becoming more and more serious. According to the measurement data, without turning on the dust suppression equipment, the dust generated by the simultaneous operation of various processes in the fully mechanized mining face can exceed 4000mg / m 3 , far exceeded the national standard, and posed a serious threat to the safety of coal mine production and the health of workers

[0003] In view of the current problems, scholars and experts from various countries have also carried out in-depth research. Although the implementation of measures such as coal seam water injection and spray dust reduction have played a role in reducing dust to a certain extent, but now with the continuous improvement of mechanization, production The amount of dust is also increasing, so that the dust reduction effect of the existing dust control measures is not obvious, especially the dust control effect in the working area of ​​the coal mining machine workers is not good, which seriously endangers the physical and mental health of the workers in the coal mining area. Mine Safety Production

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