The invention relates to the field of roller shells, in particular to a roller shell. The roller shell comprises a roller, a lining, a first
lantern ring, a roller shell body, a second
lantern ring, an air hole, a cylindrical shell, an air inlet joint, a first cavity, a first through hole, a second through hole, a third through hole, a second cavity, an air outlet hole, a third cavity, a bearing,a cylinder, a bolt, a sealing
gasket, a sealing
flange, a threaded hole, a clamping groove, a clamping block and a heating wire. The clamping block at the inner wall of the roller shell is clamped into the clamping groove in the lining, the roller shell can be easily taken down from the lining and replaced, the roller shell can be conveniently replaced, the roller shell replacement cost is lowered, the device comprises an end air inlet mechanism, the air inlet joint of the end air inlet mechanism is externally connected with an
air pump, when the device is in use, gas generated by the air pumpis blown out through the air holes in the first
lantern ring and the second lantern ring finally, meanwhile, due to rotation of the roller, the phenomena that gas flow guiding of the roller appears and the internal gas circulation effect is poor can be avoided, and the later noodle airing time is shortened.