| abstract |
The invention discloses a ventilation device based on underground coal mine air circulation, comprising a main ventilation pipe, a secondary ventilation pipe, an explosion-proof motor, a guide shell and four first support rods. The auxiliary ventilation pipe is located at the bottom of the main ventilation pipe, and the auxiliary ventilation pipe One end is communicated with the ventilation main pipe, and the explosion-proof motor is located on the right side inside the ventilation main pipe. In the present invention, the ventilation main pipe, the ventilation auxiliary pipe, the explosion-proof motor, the first fan blade, the protective net, the locking structure, the filter frame, the anti-reverse wind frame, the positioning structure and the air guiding mechanism are arranged, so that the wind can pass the ventilation main pipe to the mine hole conveniently. Input new air, and at the same time, due to the gap effect formed between the ventilation main pipe and the ventilation auxiliary pipe, the air inside the mine can be sucked into the ventilation auxiliary pipe through the anti-reverse wind frame and the filter frame, and the wind blows the air guide mechanism, The wind can be pushed to achieve the purpose of filtering dust in the air, which solves the problem that the existing air supply type is easy to generate dust and reduces the use efficiency. |