summary:
The central screw and outer screw are connected by a cycloidal pinwheel reducer and rotate at the same speed. During operation, the central screw lifts the mixed material from the bottom to the top, while the outer screw belt with high linear velocity lifts the material from bottom to top along the conical cylinder wall. Under the action of centrifugal force, both movements throw the material in the tangential direction into space, generating strong convective shearing and diffusion of the material, thus achieving rapid mixing. (The screw can also be made into a reverse screw).