PF impact crusher uses impact energy to crush materials. When the material enters the action zone of the plate hammer, it is constantly thrown towards the counterattack device installed above the rotor by the high-speed impact of the plate hammer, and then bounced back to the action zone of the plate hammer from the counterattack lining plate to be counterattacked again. The material is repeatedly crushed in the crushing chamber from large to small until it is crushed to the required particle size and discharged from the lower part of the machine.