Coal mine underground ventilation and dust falling device

The utility model discloses an underground coal mine ventilation and dust fall device which comprises a machine body, an air inlet is formed in one end of the machine body, an air outlet is formed in the other end of the machine body, a dust screen is arranged on the air inlet, a mounting rod is arranged in the machine body, a motor is arranged on the mounting rod, and fan blades are arranged at the output end of the motor. A base is arranged at the bottom end of the machine body, and a mobile device is arranged at the lower end of the base; the device is convenient to move or fix through the arranged moving equipment, the angles of the air inlet and the air outlet are convenient to adjust through the arranged electric telescopic rod, the multiple high-pressure sprayers are obliquely arranged towards the air outlet, fan blades are driven by a motor to generate air flow, water mist sprayed out of the high-pressure sprayers can be blown into air, and the dust falling and cooling effects are achieved; the applic