Large light substance sorting machine

The invention provides a large light substance sorting machine, which belongs to the technical field of light substance separation, and comprises a shell, a feed port is arranged at the top end of the shell, a toothed plate separation device is arranged below the feed port, the toothed plate separation device comprises a chain plate conveying belt obliquely arranged in the shell, and a plurality of rows of first separation spike teeth are uniformly arranged on the chain plate conveying belt at intervals; the two sides of the upper end of the chain plate conveying belt are each connected with a driving chain wheel matched with the chain on the same side, the two sides of the lower end of the chain plate conveying belt are each connected with a driven chain wheel matched with the chain on the same side, and the two driving chain wheels and the two driven chain wheels are driven by a driving shaft and a driven shaft respectively. An air inlet is formed in the shell below the right side of the toothed plate separ