Coal bed gas ground air water is with adopting device

The utility model provides a coal bed gas ground air water is with adopting device, including the pit shaft, the pipeline, a gas -liquid separator, the negative pressure pump, the coal bed gas is carried main line and first coal bed gas and is recycled the pipeline, the upper end lateral part of pit shaft has the flushing fluid entry, the gas -liquid entry end is connected with the negative pressure delivery side of pump, the coal bed gas exit end is connected with coal bed gas transport main line, first coal bed gas is recycled the pipeline and is included first valve, compressor and first check valve, the one end of first valve is connected on the main line is carried to the coal bed gas, the other end of first valve is connected with the entry end of compressor, the exit end of compressor is connected with the entry end of first check valve, the exit end of first check valve passes through tube coupling to flushing fluid and enters the mouth. The utility model discloses the coal seam air current that utilizes the negative pressure to form carries coal seam water, buggy no. 1 plays ground, has cancelled solitary pumping system, and the fairly obvious time between failures of energy -conserving effect is showing the row who increases and can make the coal bed gas and is adopting and accord with the natural law more.