Boiler smoke tube carbon deposition prevention device

The utility model relates to a boiler smoke tube carbon deposition prevention device which comprises a smoke tube, the left end of the smoke tube is fixedly connected with a cylindrical shell, the cylindrical shell is communicated with a smoke tube cavity, a rotating shaft is coaxially arranged in the cylindrical shell in a rotating mode, the rotating shaft is fixedly connected with a rotating block, a plurality of poking pieces are evenly distributed on the outer edge face of the rotating block along the circumference, and all the poking pieces are hinged to the outer edge face of the rotating block. A protruding block is fixed to the right side of the communicating position of the cylindrical shell and the smoke pipe on the inner wall of the smoke pipe, the free end of the poking piece can impact the left end face of the protruding block when the poking piece rotates to the protruding block along with the rotating block, a baffle is fixed to the lower end of a communicating opening of the cylindrical shell