The utility model belongs to the technical field of dust and waste residue recovery, in particular to a stone dust and slag recovery mechanism. The technical background of the existing stone dust waste recycling factory, in general to special tank for recycling, and in the open at present have not seen; for the present stone cutting machine has not seen the stone dust residue recovery mechanism assembly. The purpose of the utility model is to provide a stone dust and slag recovery mechanism which can directly be installed on the stone processing machine to recover the dust and waste residue produced by stone cutting on the spot. The purpose of the utility model is a stone dust residue recovery mechanism is achieved by the saw blade comprises a frame, cover, box, hollow piece and vacuum exhaust machine, its structure is a hollow vacuum sheet is fixed on the lifting column, a lifting column is fixed on the frame, the bottom ends of the hollow vacuum suction nozzle, suction the suction nozzle to the hollow sheet cavity after external guide pipe connected to the exhaust dust. The purpose of the utility model can be realized through the following technical scheme, the stone dust waste recycling mechanism, the utility model is characterized in that the dust blocking plate is arranged between the box cover is positioned in the hollow vacuum sheet and saw blade, the dust board inside the hollow is arranged inside the dust blocking sheet, is arranged in the lower part of the dust collecting the mouth, dust dust blocking plate through the guide tube external dust exhauster. The stone dust residue recovery mechanism, characterized by comprising a blade cover box, blade cover box is fixed on the frame, a semicircle body blade cover box comprises a box inner and outer box enclosure constitute internal cavity of the dust in the inner surface of the inner sheet is provided with a box, on the other side of the blade on the box cover a horizontal vacuum tube, the bottom edge of the blade box cover are arranged at one side of the movable plate cover, movable plate cover is arranged under oblique horizontal vacuum tube, vacuum tube and the bottom of the other side of the box cover is connected with saw dust outlet, horizontal vacuum tube and the other end of the cable to connect one end of the vacuum tube, the other end of the cable to the vacuum tube the guide tube external dust exhaust machine, box board layer and the outer box plate plate cover from the inside layer, inner box plate layer arranged on the inner surface of the dust blocking plate, movable plate end of the box cover through a rotating shaft rotatably connected at the bottom edge of the blade of a box cover On the side, the outer edge of the movable plate box lid is connected with the movable frame on the hollow dust suction plate on the other side of the saw blade cover box through the pull rope. The utility model has the advantages of the utility model can be installed directly in the cutting plate machine stone, stone cutting machine and cutting board slate can be also collected dust and waste residue, and centralized processing, to avoid a lot of flying stone caused by dust and waste in cutting the body to avoid harm caused by construction thus, environmental protection, dust recovery of the utility model can achieve the best effect, will not cause environmental pollution, dust. The utility model can be installed on any stone cutting plate machine, and has the advantages of simple structure and convenient use.