Rice grading machine with high screening efficiency

The utility model relates to the technical field of grain processing, and discloses a rice grading machine with high screening efficiency, which comprises a box body, three fixed sleeve shafts are fixedly mounted on the right side wall of an inner cavity of the box body, screening cylinders are movably mounted in the fixed sleeve shafts, and couplers are fixedly mounted on the left sides of the screening cylinders. The utility model discloses a rice grading machine with high screening efficiency. Motor, a coupler is fixedly mounted at an output shaft of the motor; therefore, the motor drives the screening cylinder fixedly mounted on the coupler to rotate; the bran powder in the rice can be screened at one time by the bran powder screening net fixedly mounted on the screening cylinder; according to the rice screening device, rice bran powder falls into the screening cylinder from the rice bran powder screening net, is discharged to the isolation plate through the discharging pipe and is discharged through the