Polishing device for surface spraying of pressure container

The utility model discloses a polishing device for surface spraying of a pressure vessel, which relates to the technical field of polishing equipment and comprises a bottom frame, a table top arranged on the bottom frame, a turntable arranged at the center of the table top on the bottom frame, a speed reducer arranged at the bottom of the bottom frame, a linkage disc arranged at the center of the turntable, and a linkage wheel arranged at one end of the linkage disc close to the speed reducer. A driving belt is arranged between the speed reducer and the linkage wheel; a door frame is arranged on the side, located on the rotary disc, of the bottom frame, a pressing mechanism and a polishing mechanism are arranged on the door frame, the pressing mechanism comprises a first driving cylinder, and a pressing disc is arranged at the output end of the first driving cylinder; the polishing mechanism is provided with a driving motor, a first lead screw is arranged at the output end of the driving motor and connected w