White rice grading flat rotating screen

The utility model relates to the technical field of rice processing, and discloses a rice grading flat rotating screen which comprises a working barrel, a supporting block, a leakage barrel, a movable door and a rotation guiding device composed of a motor, a connecting shaft and a guiding block, sliding grooves are formed in the inner side of the working barrel at equal intervals, and mounting grooves are formed in the positions, corresponding to the sliding grooves, of the side face of the connecting shaft. And a screen plate is movably mounted in the mounting groove and is arranged in the sliding groove. According to the screening device, the motor drives the connecting shaft to rotate, the clamping blocks in the clamping grooves play a role in restraining and driving the screen plates to rotate in the mounting grooves and the sliding grooves, meanwhile, when the connecting blocks make contact with the matching blocks, the screen plates are extruded to the upper positions in the sliding grooves, and when th