The double-tooth roll crusher uses the high extrusion pressure produced by the relative rotation of the two wear-resistant tooth rollers to break the material. After the material enters the gap between the two tooth rollers (V-shaped crushing cavity) the material is subjected to the extrusion pressure and shear force of the relative rotation of the two tooth rollers. Under extrusion shearing and meshing grinding the material is broken into the required particle size and then discharged by the discharge port.
A cuneiform or gasket adjusting device is arranged between the two roller wheels and an adjustment bolt is arranged at the top of the cuneiform device. When the adjusting bolt pulls the wedges upward the wedges leave the top of the movable roller from the fixed wheel that is the gap between the two rollers becomes larger and the discharge particle size increases. When the wedges are down the gap between the two wheels becomes smaller and the discharge particle size becomes smaller under the action of the pressing spring. The gasket device adjusts the discharge particle size by increasing or decreasing the number or thickness of the gasket. When the gasket is increased the gap between the two rollers becomes larger and when the gasket is reduced the gap between the two rollers becomes smaller and the discharge particle size becomes smaller.