Sealing structure convenient to open and used for pressure container

The sealing structure comprises a container body, a feeding and discharging port, a sealing cover and a sealing inner plate, an annular open groove is formed in the inner arc wall of the feeding and discharging port, a positioning column is connected to the inner wall of the annular open groove in a welded mode, a positioning hole is formed in the sealing inner plate in a penetrating mode, and the positioning column is connected with the positioning hole in a pluggable mode. One side of the sealing inner plate is fixedly connected with a sealing inner plug, the sealing inner plug is in meshed insertion connection with the inner arc of the feeding and discharging opening, the inner side of the sealing cover is fixedly connected with an annular groove sealing plug, and the annular groove sealing plug is in meshed insertion connection with the annular open groove and the positioning column; the sealing device has the advantages that the main gear and the screw gear are driven by the motor to rotate, and then the