High-pressure dust collection device for dead knife

The utility model discloses a high-pressure dust collection device for a dead knife. The paper cutter comprises a plurality of circular cutters, a first rotating shaft, a bottom cutter, a second rotating shaft, a containing piece, a communicating piece and a fixing frame, the circular cutters are fixed to the first rotating shaft, paper to be cut is cut between the circular cutters and the bottomcutter, the bottom cutter is provided with a plurality of cutter seams, the containing piece is V-shaped, the cutter seams are communicated with the communicating piece, and the communicating piece iscommunicated with a high-pressure fan. Paper to be cut is cut between the circular knife and the bottom knife; the containing piece is fixed to the communicating piece and communicates with the communicating piece. Paper to be cut passes through the space between the circular knife and the bottom knife to generate paper scraps, the paper scraps fall into the containing part, the high-pressure fanoperates to suck away the