Coal mine underground pneumatic oil pressing device

The utility model provides an underground coal mine pneumatic oil pressing device which comprises an oil drum, a liquid outlet pipe and an air inlet pipe, an air inlet hole and an oil drainage hole are formed in the top of the oil drum, a lower pipe opening of the liquid outlet pipe is located at the bottom in the oil drum, a lower pipe opening of the air inlet pipe is located on the upper portion in the oil drum, and the upper end of the air inlet pipe is sequentially connected with a safety valve, a gate and a high-pressure air pipe. The high-pressure air pipe is communicated with an air pipe of a roadway; a pipe joint is installed at the oil drainage hole, the lower end of the pipe joint is connected with a liquid outlet pipe, a lower pipe opening of the liquid outlet pipe is located at the bottom of the oil barrel, and the upper end of the pipe joint is sequentially communicated with a liquid flow meter, a liquid outlet measuring pipe and an emulsion pump box. After the device is put into field use, quick