Horizontal mixer (horizontal mixer) consists of a U-shaped barrel body, spiral belt mixing blades, and transmission components; The U-shaped long cylinder structure ensures small resistance movement of the mixed materials (powder, semi fluid) within the cylinder. The positive and negative rotating screw bars are installed on the same horizontal axis, forming a low power and efficient mixing environment. The spiral shaped blades are generally made into two or three layers, with the outer spiral converging the material from both sides to the center, and the inner spiral conveying the material from the center to both sides, which can form more eddies in the flow of the material, accelerate the mixing speed, and improve the mixing uniformity; Using a belt pulley to drive a cycloidal reducer, compared to the high torque of a gear reducer, the elastic connection of the belt drive has the advantage of protecting the transmission components when overloaded.