The working principle of the jaw crusher is to use the extrusion and bending action of the two jaw plates on the material to coarsely or mediumly crush various hardness materials. The crushing mechanism consists of a fixed jaw plate and a movable jaw plate. When the two jaw plates approach, the material will be crushed. When the two jaw plates leave, the material blocks smaller than the discharge opening will be discharged from the bottom. Its crushing action is carried out intermittently