Rice grading device

Abstract

The utility model belongs to the technical field of rice grading devices, and particularly relates to a rice grading device which comprises a base, a grading bin, a grading rod, a feeding port, a rotating frame, a first-stage discharging bin and a second-stage discharging bin, the grading rod is arranged in the grading bin, the first-stage discharging bin is installed below the grading bin, and the second-stage discharging bin is installed below the grading bin. The secondary discharging bin is arranged on one side of the base, the rotating frame is arranged in the grading bin, a protection device is arranged on the outer side of the grading bin, a clamping device is arranged above the grading rod, and the clamping device comprises an outer gear, a lead screw, a clamping sleeve, a clamping groove, a clamping rod, a clamping plate, a rotating sleeve, an inner gear, a clamping ball, a movable groove, a fixed plate, a mounting groove and a matching groove; the clamping plate is connected to one side of the clamping rod, the fixing plate is connected to one side of the clamping sleeve, the inner gear is connected to the inner side of the rotating sleeve, the movable groove is formed in the side wall of the clamping sleeve, the clamping groove is formed in the side wall of the mounting groove, and the matching groove is formed in the outer side of the clamping rod.

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