Overview: By the cycloid reducer to connect the central screw and the outer spiral with the same rotation speed. In the work, the center screw will raise the mixed material from the bottom to the top while the outer thread with larger speed will lift the material from bottom to top along the cone wall. Thrown into the space, the material produces a strong convection shear, diffusion, so as to achieve the purpose of rapid mixing. (Screw can also be made into reverse screw).