Air distribution device for excavation working face

Abstract

An excavation working face wind distributor comprises a machine body, a left wind cylinder connector, a right wind cylinder connector, a wind outlet and a conversion valve. The left wind cylinder connector is installed on the left side of the machine body. The right wind cylinder connector is installed on the right side of the machine body. The wind outlet and the conversion valve are installed at the side end of the machine body. When the excavation working face wind distributor is used, the left wind cylinder connector and the right wind cylinder connector are respectively connected with a ventilation wind cylinder and connected into a ventilation pipeline of the ventilation wind cylinder, one end of the ventilation wind cylinder is connected with a local fan, and the other end of the ventilation wind cylinder is communicated to the position nearby the head-on portion of an excavation working face. The local fan is started, the conversion valve is closed, at the moment, the wind outlet is opened, the end, communicated with the head-on portion of the excavation working face, of the ventilation wind cylinder is closed, and a wind current outflows from the wind outlet in the radial direction. The conversion valve is opened, at the moment, the wind outlet is closed, the end, communicated with the head-on portion of the excavation working face, of the ventilation wind cylinder is opened, and the wind current axially flows to the position nearby the head-on portion of the excavation working face. According to the excavation working face wind distributor, the axial wind current is converted into the radial wind current, and the dust removal effect is improved.

Description

technical field [0001] The invention relates to an air distributor, in particular to an air distributor for a driving face. Background technique [0002] A large amount of coal dust will be produced during the excavation process of the underground roadway of the coal mine. Since the front of the roadway during excavation is a "plug", the amount of coal dust is larger than that in other positions. A large amount of coal dust not only seriously damages the workers The health of the mine is also a serious threat to the production safety of the mine. Therefore, generally during the excavation process, especially in the excavation process using comprehensive mechanized equipment, a synchronous fan will be arranged on the excavation face for ventilation and dust removal. [0003] The tunneling working face generally adopts the ventilation and dust removal method of long pressure and short suction, that is, the fresh air is sent to the working face by the press-in fan, and then th...

AI Technical Summary

Problems solved by technology

Due to the acceleration of the vortex, the interior of the fluid is broken and rotated, and the coal dust is carried outwards at a great speed, so that most of the dust-laden air cannot enter the extraction fan for purification, which seriously affects the coal dust on the tunneling face. decrease in concentration

[0004] To sum up, there is no equipment in the prior art that can effectively improve the dust removal effect of the tunneling face by switching the ventilation mode and eliminating the influence of the wind vortex

Images