Air dust removal device for radiator and harvester

The invention discloses an air dust removal device for a radiator. The air dust removal device comprises a vertical air director with an opening in the upper end, wherein an air outlet is formed in one side of the air director, a suction fan is arranged in the position, corresponding to the air outlet, of the air director, a dust removal mesh cover is arranged correspondingly at the opening in the upper end of the air director, the dust removal mesh cover covers the opening in the upper end of the air director, and first hairbrushes used for cleaning the outer surface of the dust removal mesh cover are arranged on the periphery of the dust removal mesh cover; the dust removal mesh cover is connected with a rotating shaft, and fan blades driven through differential pressure generated by the suction fan are arranged on the rotating shaft. Few components are used, the use cost is reduced, and the dust removal effect is remarkable. The invention further discloses a harvester provided with an automatic dust removal and prevention structure. The overall use performance of the harvester is greatly improved, and the maintenance time is saved.