Crusher is mainly rely on the impact of the role of broken materials, the material into the crusher, impact subjected to high-speed rotary hammer broken, broken materials, gain kinetic energy from the hammer at the block from the high-speed rushed to the aircraft body plate, bar screen at the same time the material collide, have been repeatedly broken, less than the gap of the sieve material discharged from the gap, the larger material on the sieve again the impact of the hammer, grinding crushed and broken material is hammer from the gap in the extrusion to obtain a product of the required particle size. motor drives the rotor in the crushing cavity high-speed rotation. Material from the upper to the mouth to feed into the machine, high-speed movement of the hammer blow, impact, shearing, abrasive and grinding. The lower part of the rotor, has a sieve, crush the grain size smaller than the mesh size in the material is discharged through the sieve is greater than the sieve size of coarse grade retention continue to be a hammer blow and grinding, and finally in the sieve through the sieve board is discharged outside the machine.