Slag treatment packing auger shaft sleeve of blast furnace

The utility model relates to a slag treatment packing auger shaft sleeve of a blast furnace. Steps are arranged on an inner hole of a left inner shaft sleeve body and an inner hole of a right inner shaft sleeve body, the inner diameter of the steps is correspondingly matched with the outer diameter of a packing auger shaft body, and the left inner shaft sleeve body and the right inner shaft sleeve body are fixedly connected with the two ends of the packing auger shaft body respectively. The steps are mounted on the inner holes of the shaft sleeve bodies, the inner diameter of the steps is increased, the manner that the sleeve bodies originally sleeve a shaft main body of the packing auger shaft body is changed into a manner that the two ends of the shaft main body of the packing auger shaft body are sleeved by the sleeve bodies, outer weld seams are changed to a pipe opening and shaft sleeve edges to be welded, operation is easy, and the welding quality can be ensured; meanwhile, plug welding is not needed, welding operation is convenient, and the possibility of fatigue crack generation is reduced.