Self-cleaning air supply device

The utility model relates to the field of air filtering equipment, and discloses a self-cleaning air supply device which comprises a filtering box, a fan, an air inlet pipe and an automatic cleaning mechanism, the fan is installed on one side of the filter box, the air inlet pipe is arranged on the side, away from the fan, of the filter box, the air inlet end of the fan is communicated with the interior of the filter box, a first-stage filter piece and a second-stage filter piece are arranged in the filter box, and the automatic cleaning mechanism is installed on the filter box and used for automatically cleaning the first-stage filter piece and the second-stage filter piece; according to the scheme, the first-stage filter and the second-stage filter are automatically cleaned through the automatic cleaning mechanism, and the first-stage filter and the second-stage filter are arranged on the basis of automatic cleaning, so that the filtering effect can be effectively improved; the first-stage filter and the se