Shaft furnace with deformation-resistant furnace cover

The utility model discloses a shaft furnace with a deformation-resistant furnace cover, which belongs to heat treatment equipment, in particular to the technology of the furnace cover structure of the shaft furnace of the heat treatment equipment. The shaft furnace comprises a furnace body consisting of a furnace shell, a heating component, a muffle, a guide tube and other components, and is characterized in that a seal head freely hung on the furnace cover is in a spherical shape, the spherical seal head is freely hung on the cooling surface of a structural rib above the furnace cover through a hanging rod, and the inner ring and the outer ring of the furnace cover in the position with a fan motor is made by rolling a punching heat-resistant steel plate. The utility model improves the high temperature resistance of the furnace cover, prolongs the service life, and solves the problems of cracking and deformation of the furnace cover insulation package.