Continuous pressure steaming machine air bag sealing method

The invention discloses a continuous pressure steaming machine air bag sealing method. Under the action of hydraulic cylinders, piston rods push sealing flange cover plate supporting plates through lifting lugs and carry the sealing flange cover plate supporting plates, sealing flange cover plates, hooks, tension springs, air bags and air bag sleeves to move downwards together; after the sealing flange cover plate supporting plates move downwards to a position, pre-heated compressed air enters the air bags from flexible air pipes and connectors, along with increasing of pressure in the air bags, expansion joints arranged on the air bags expand to push the sealing flange cover plates to tightly press sealing gaskets arranged on sealing flanges, and therefore sealing is formed. In the sealing process, the sealing flange cover plates are uniform in moving speed and stable in operation, the stressed area on the sealing flange cover plates from the air bags is large, the sealing flange cover plates are evenly stressed and small in deformation, finally the sealing gaskets are evenly stressed and deformed, the sealing effect is improved, and the key problems that the sealing effect among all bins is poor, and work reliability is poor are solved.