The hammer crusher mainly relies on impact to crush materials. The crushing process is rough as follows: The material enters the crusher and is crushed by the impact of the high-speed rotating hammer. The crushed material obtains kinetic energy from the hammerhead and rushes to the baffle and screen in the frame at high speed. At the same time, the materials collided with each other and were broken several times. Materials smaller than the gap between the screen bars are discharged from the gap. Larger materials are crushed again by the impact, grinding, and squeezing of the hammer on the screen.