Alkali permeation spraying device for helical ribbon alkali permeation mixing machine

The utility model belongs to the field of helical ribbon mixers, in particular relates to an alkali permeation spraying device for a helical ribbon alkali permeation mixer, and provides the following scheme aiming at the problems that the spraying device arranged on the existing helical ribbon mixer is always fixedly arranged and is difficult to realize uniform and comprehensive spraying: the alkali permeation spraying device comprises a box body, a mounting frame is fixedly mounted at the top of the box body, a rotating pipe is rotationally connected to the mounting frame, the bottom end of the rotating pipe extends to support the interior of the box body and fixedly communicates with a connecting box, U-shaped pipes are rotationally connected to the inner walls of the two sides of the connecting box in a sealed mode, and one end of each U-shaped pipe extends into the box body and is fixedly connected with a sealing head; two transmission assemblies are symmetrically arranged at the top of the connecting box