The invention relates to the field of building materials, in particular to a blank
autoclave device for aerated concrete blocks, which comprises a
barrel and a kettle door, an air inlet is arranged on the surface of the
barrel, fixing rings are arranged at two ends of the
barrel, the barrel comprises a track, a door opening mechanism is arranged between the barrel and the kettle door, an outer ring is mounted on the surface of each fixing ring, and the kettle door is arranged on the outer ring. A door ring is arranged on the inner side of the kettle door, the outer ring and the door ring are sealed in an embedded mode, a transverse
pipe is installed on the upper side in the barrel, and an arc
pipe is arranged at the bottom end of the transverse
pipe and attached to the inner wall of the barrel. By designing the air duct structure in the cylinder, hot steam enters from the top but is released from the bottom of the cylinder, so that the internal space of the cylinder can maintain the temperature of the cylinder wall in the steam release process, and meanwhile, the steam can be periodically discharged towards two ends in the steam release process, so that the heat and the air pressure at the kettle door are increased.