Filtering device of purifier

The utility model relates to the field of filtering devices, and discloses a filtering device of a purifier, which comprises a purifier main body, a plurality of filter screens are arranged at the bottom of one side of the outer surface of the purifier main body, a movable frame is movably mounted at the bottom of one side of the outer surface of the purifier main body, and fixed frames are welded to the middles of the two sides and the middles of the front and rear ends of the movable frame; a rotating shaft is hinged to the middle of one side of the inner wall of the fixing groove, cleaning brushes are welded to one side of the outer surface of the rotating shaft at equal intervals, and a plurality of fixing rods are welded to the position, close to the cleaning brushes, of one end of the inner wall of the fixing groove; the multiple cleaning brushes rotate along the outer surface of the filter screen, so that the effect of conveniently cleaning dust and sundries accumulated on the outer surface of the filt