In industrial and mining production, the jaw crusher is the most commonly used primary crushing equipment. The product simulates the movement of the two jaws of an animal and completes the crushing operation of materials through the movement of the two jaw plates of the movable jaw and the fixed jaw.
A jaw crusher is mainly composed of a fixed jaw plate, movable jaw plate, frame, upper and lower guard plates, adjusting the seat, movable jaw rod, etc. Knowledge of the internal structure helps to understand how it works. The working part of the jaw crusher is two jaws, one is a fixed jaw (fixed jaw), which is vertically (or slightly inclined at the upper end) fixed on the front wall of the machine body, and the other is a movable jaw (moving jaw). Inclined to form a crushing cavity (working cavity) with a large upper and a lower jaw with a fixed jaw. The movable jaw plate makes periodic reciprocating motions against the fixed jaw plate, sometimes separating and sometimes approaching.
In each revolution of the jaw crusher, only half of the cycle is used for crushing, and the other half of the cycle is used for discharging. The jaw crusher crushes materials through the periodic movement of the movable jaw. The crushing method is driven and squeezed. The belt and pulley are driven by the motor, and the movable jaw does a fixed up-and-down reciprocating movement through the action of the eccentric shaft.
When the movable jaw rises, the angle between the toggle plate and the movable jaw becomes larger, pushing the jaw plate closer to the fixed jaw plate, so that the volume of the material is reduced.
Multiple crushing such as grinding:
When the movable jaw moves downward, the angle between the toggle plate and the movable jaw becomes smaller.
The movable jaw plate leaves the fixed jaw plate under the action of the pull rod and spring, and the material moves downward by its own weight from the crushing cavity. discharge. Each cyclical movement of the movable jaw causes the material to be crushed once and sent down for a certain distance.
With the continuous rotation of the motor, the movable jaw performs periodic reciprocating movements up and down according to a predetermined track to complete the whole process of the jaw crusher’s material crushing operation.