The spiral angle of the rotor rib and the overlapping length of the two ribs are well-designed, and the material is evenly dispersed.

The surfaces of all parts in contact with materials are polished after grinding and plating with hard chrome, which is wear-resistant and anticorrosive.

The parts in contact with materials are jacketed structure, which can obtain cooling or heating effect and adapt to various requirements of rubber refining and plastic refining process.