Valve plate polishing and measuring mechanism

The utility model discloses a valve plate polishing and measuring mechanism which comprises a supporting table, a driving motor is arranged in an inner cavity of the supporting table, a rotating disc is connected to an output shaft of the driving motor, supporting frames are fixedly connected to the two sides of the top of the rotating disc, and threaded rods are connected to the top ends of the supporting frames. A baffle is arranged at one end of the threaded rod, an inserting rod is arranged on one side of the baffle, a sliding shell is connected to one side of the top of the supporting table, a lead screw is arranged in an inner cavity of the sliding shell, the top end of the lead screw penetrates through the sliding shell to be connected with a rotating handle, and a lifting block is connected to the lead screw; one end of the lifting block penetrates through the sliding shell to be connected with a contrast plate, and through the arrangement of the supporting frame, the threaded rod, the baffle and the