Nano-sand mill with static discharge at tail end of turbine

A nano-sand mill with static discharge at a tail end of a turbine, comprising a main body and a screen box, wherein the screen box is fixedly installed at a bottom of the main body, a top surface of the screen box is provided with a through hole, the screen box is communicated with a discharge chamber of the main body through the through hole, an annular mounting plate is fixedly installed on an inner side surface of the screen box, a screen is fixedly installed between inner side surfaces of the annular mounting plate, and a dredging mechanism is provided inside the annular mounting plate;

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• the dredging mechanism comprises a dredging box, a side surface of the dredging box is fixedly connected with a connecting frame, two symmetrical rotating shafts are disposed in the dredging box and movably connected between a front inner wall and a back inner wall of the dredging box, a rotating roller is fixedly installed on an outer surface of the rotating shaft, evenly distributed installation sleeves are fixedly installed on an outer surface of the rotating roller, evenly distributed bumps are fixedly installed on an outer surface of one of the installation sleeves, a drive box for driving the two rotating shafts is fixedly installed on the front inner wall of the dredging box, two sets of symmetrical limit sleeves penetrate and are fixedly connected with a top wall of the dredging box, wherein the limit sleeves are respectively disposed directly above the installation sleeves, a protruding rod is movably coupled with and penetrates one of the limit sleeves, a connecting block is fixedly installed on a bottom of the protruding rod, a bottom of the connecting block is in contact with top surfaces of the bumps, a second spring is fixedly installed between a top surface of the connecting block and the inner top wall of the dredging box, wherein the second spring is sleeved on an outer surface of the protruding rod, and a dredging marble is fixedly installed on a top of the protruding rod.