Grain winnowing vibrating screen

The utility model discloses a grain winnowing vibrating screen, which belongs to the technical field of grain processing and comprises a grain screening box, a protection box is fixedly mounted on one side surface of the grain screening box, a discharge port is fixedly mounted on the other side surface of the grain screening box, and a box cover is fixedly mounted at the top of the grain screening box. A feeding pipe is fixedly mounted at the top of the box cover, an air suction box is fixedly mounted at the top of the box cover, a conveying assembly is arranged in the grain screening box, a vibrating screen assembly is arranged on one side of the conveying assembly, and a baffle is fixedly mounted on the inner wall of the grain screening box; according to the grain winnowing machine, due to the fact that the vibrating screen assembly and the conveying assembly are arranged, winnowing can be carried out in the conveying process, winnowing can also be carried out in the vibrating screen process, and due to the