Air filtering device capable of circularly cleaning dirt

The utility model discloses an air filtering device capable of circularly cleaning dirt, which comprises a filtering barrel, an air inlet box is sleeved at the top of the filtering barrel, a grid fence is arranged on the outer surface of the air inlet box, a conical seat is fixedly connected with the inner wall of the filtering barrel, the filtering barrel is divided into an upper filtering cavity and a lower filtering cavity through the conical seat, and the upper filtering cavity and the lower filtering cavity are communicated with each other. The air filter has the beneficial effects that in the working process of the air filter, the upper filter cavity and the lower filter cavity can filter and purify air, the scrubbing mechanism arranged in the upper filter cavity can scrub the filter screen, and the dust collection mechanism can discharge filtered dirt; and the lower filtering cavity is filled with the adsorbent, so that the filtered gas can be adsorbed and purified, the air can be filtered and purified