Combustion-supporting gas filtering system

The utility model relates to a combustion-supporting gas filtering system which comprises a gas inlet pipe, a filtering chamber and a gas outlet pipe, and is characterized by further comprising a sucking pump, the lower part of the filtering chamber is filled with filtering liquid; the air inlet pipe and the air outlet pipe are mounted on the top wall of the filtering chamber in the vertical direction, the inner port of the air inlet pipe is close to the liquid level of the filtering liquid, and the inner port of the air outlet pipe is located above the inner port of the air inlet pipe; an outer port of the air inlet pipe and an outer port of the air outlet pipe are positioned on two opposite sides of the filtering chamber; the air extracting pump is arranged outside the filtering chamber and is connected with the outer end of the air outlet pipe. The combustion-supporting gas filtering system can filter impurities in the combustion-supporting gas, meanwhile, the humidity of the combustion-supporting gas is r