Coal mining air detection device

The utility model discloses a coal mining air detection device which comprises a bottom shell installed on a coal mining site, an outer shell detachably installed on the upper surface of the bottom shell, an inner shell installed on the lower surface of the outer shell in a buckled mode, an installation frame installed on the lower surface of the inner shell in a buckled mode, an air detection assembly arranged in the installation frame, and a sweeping assembly rotationally installed on the upper surface of the inner shell. The cleaning assembly rotates at the upper end of an air inlet formed in the upper surface of the inner shell, an air outlet pipe is fixedly installed on the upper surface of the inner shell, a filter screen is arranged in the air outlet pipe, the air outlet pipe is communicated with the interior of the bottom shell, and an acousto-optic buzzer is fixedly installed on the upper surface of the inner shell and connected with the air detection assembly. Through the design of the sweeping asse