Mine ventilation air methane concentration purification device

The invention relates to the technical field of gas concentration purification, and particularly discloses a mine ventilation air methane concentration purification device which comprises a purification assembly, a dust removal assembly is installed on one side of the outer wall of the purification assembly, a driving assembly is installed on the other side of the outer wall of the purification assembly, and a filtering assembly is installed on the inner wall of the purification assembly. The purifying assembly is used for dedusting and purifying gas, the dedusting assembly is used for conveying gas into the purifying assembly and dedusting, and the filtering assembly is used for filtering mixed liquid in the purifying assembly. Part of dust contained in the gas can be removed through filtering of the outer walls of the bottoms of a plurality of dust filtering nets, dust in the gas in the treatment box is removed again through fog water, dust in the fog water is filtered through a first filtering net and a se