Classified screening device for corn seeds

The utility model provides a corn seed grading and screening device. The corn seed grading and screening device comprises a supporting plate; the operation box is fixedly mounted at the top of the supporting plate; the discharging opening is formed in the top of the operation box; the multiple screens are arranged in the operation box, the sizes of the multiple screens are different, and vibration motors are arranged at the bottoms of the multiple screens; the multiple discharging openings are formed in the two sides of the operation box correspondingly, and receiving hoppers are arranged below the multiple discharging openings correspondingly; the cleaning mechanism is arranged on the operation box; and the collecting mechanism is arranged on the supporting plate. The corn seed grading and screening device has the advantages that dust and chippings in the screening process can be fully collected and treated, and then an operator is prevented from inhaling the dust and the chippings into the nasal cavity. 本实用