Ventilation air methane collecting device for coal mine gas control

The utility model relates to the technical field of ventilation air methane collection, in particular to a ventilation air methane collection device for coal mine gas control, which comprises a machine body, an air inlet is arranged in the machine body, a mounting groove is arranged on the inner wall of the air inlet, a mixing cavity is arranged at the bottom end of the air inlet, and a liquid storage cavity is arranged at the bottom end of the mixing cavity. A liquid changing pipe is arranged on the front face of the machine body, an air guide pipe is arranged on the rear wall of the machine body, the end of the air guide pipe is connected with a collecting tank, a mixing structure is installed in the machine body and comprises a motor, the motor is fixedly installed on the top face of the machine body, and the output end of the motor is fixedly connected with fan blades. And two groups of guide plates are fixedly mounted on the inner wall of the air inlet. According to the collecting device disclosed by the