Air sealing device of air preheater

The utility model relates to the technical field of air pre-heaters, and discloses an air sealing device of an air pre-heater, which comprises a stator shell, a sealing gasket is arranged at the top of the stator shell, a hot air pipeline is arranged at the top of the sealing gasket, and annular grooves are formed in the bottom of the hot air pipeline and the top of the stator shell. A sealing ring is fixed on the surface of the sealing gasket; through the arrangement of the sealing gasket and the annular groove, the contact area with a hot air pipeline and a stator shell can be effectively increased, the sealing effect is further improved, the sealing ring can effectively block air in the self-deformation state, the sealing effect is further improved, and the service life of the sealing ring is prolonged. And meanwhile, the lantern ring can further wrap the stator shell and the hot air pipeline, so that the sealing effect is improved, hot air is prevented from leaking from gaps, and the problems that when an