The utility model relates to the technical field of old sand regeneration, and discloses a rotary disc type old sand revitalization. A screw and a guide rod are provided. When a single waste screening is completed, the screw can be rotated counterclockwise, the screw can drive the screw block to move up and down, and the position of the enclosure can be limited by the guide rod, so that there is a clearance between the enclosure and the screen plate, and then the waste material on the screen plate can be pushed out. Reduce the workload of subsequent waste dumping.