Coal-bed gas recovery system

The utility model discloses a coal seam gas recovering system. The utility model is characterized in that the utility model comprises a suction device, an exhaust device and a compressing device, wherein the suction device is provided with a collecting pipe and a plurality of branch pipes, one end of each branch pipe is communicated with the collecting pipe of which the other end is connected with a gas collecting machine, a filter screen is arranged in the gas collecting machine which is also provided with a first inlet, a first gas outlet and a first filth expelling opening; the exhaust device comprises a gas liquid segregator which is provided with a second inlet, a second gas outlet and a second filth expelling opening; the compressing device is connected between the first gas outlet of the suction device and the second inlet of the gas liquid segregator in the exhaust device. The system has higher recovery efficiency, and recovered coal seam gas can be further used for inhabitants and daily combustion and heat supply of industries. Because coal seam gas in gas wells are recovered, thereby, the utility model radically prevents gas explosion in coal mines.