Putty powder raw material closed lifting system

The utility model relates to the technical field of airtight lifting systems, in particular to a putty powder raw material airtight lifting system which comprises a lifting machine, and a feeding bin is arranged above the bottom end of the lifting machine. The adjusting mechanism is located in the feeding bin and comprises a baffle, the baffle is fixed to the inner wall of the feeding bin, a feeding port is formed in the inner wall of one side of the baffle, an adjusting plate is arranged above the feeding port, a sliding block is fixed to the rear side of the adjusting plate, a toothed plate is fixed to the front side of the adjusting plate, and a gear is meshed with the outer surface of the toothed plate; a movable groove matched with the gear is formed in the inner wall of the feeding bin, a rotating rod is fixed into the gear, and the bottom end of the rotating rod is movably connected to the outer wall of the baffle through a bearing. By means of the mechanism, smoke and dust generated in the using perio