Sealing mechanism for graphite electrode after baking tunnel kiln door

The utility model relates to a part for a kiln, in particular to a graphite electrode rebaking tunnel kiln door sealing mechanism. The graphite electrode rebaking tunnel kiln door sealing mechanism comprises a supporting seat fixedly connected with a door frame, a push rod is arranged in the supporting seat, a return spring sleeved on the push rod is installed in the supporting seat, a roller is arranged at the rear end of the push rod, a hydraulic cylinder is vertically arranged at the rear part of the supporting seat, a sloping block is hinged at the front end of the piston rod of the hydraulic cylinder, a limiting opening is formed at the rear part of the supporting seat, and the inclined surface of the sloping block at the front end of the piston rod of the hydraulic cylinder in the limiting opening of the supporting seat is in contact with the roller at the rear end of the push rod. Since the supporting seat fixedly connected with the door frame, the push rod is arranged in the supporting seat, the hydra