Stone Jaw Crusher’s Adjusting Device for Discharging

During the working process, the liner of stone jaw crusher will be continually abraded by the ore or stone. In this way, the discharge opening will gradually become larger and larger. In order to ensure the quality of the product particle size, it is necessary to adjust the width of discharging opening timely. The following are commonly used adjusting device for discharging:

1.    Plate Gasket Adjusting Device of Stone Jaw Crusher
Put a set of adjusting plate gasket behind the rear trust plate support. When change the number and thickness of the plate gasket, the rear trust plate will move forward or backward. It has the advantages of simple structure, light weight. Hence, the big or medium type stone jaw crusher usually adopts this type of adjusting device. But the stone jaw crusher must be stopped when adjusting.
2.    Oblique Iron Adjusting Device of Stone Jaw Crusher
The oblique iron was lifted up and down by the bolt, worm wheel rod or chain transmission device. The front oblique iron which only can move horizontally is installed in the guide groove at the two sides of the machine frame. When the back iron is lifted up, the trust plate and movable jaw will move together, the discharge opening will minish; when the iron fall down, the discharge opening will enlarge. This device can realize step-less adjustment and there is no need to stop the stone jaw crusher, but it requires more strength to lift the iron up and down. The total dimension of the stone jaw crusher will enlarge. So it is only suitable for small and medium stone jaw crusher.
3.    Hydraulic adjusting device. It adjusts the width by making use of hydraulic cylinder and plunger. The injection of oil is done manually or by electric hydraulic pump. When adjust, loose the nut of spring at first, open the stop valve, start the motor of hydraulic pump and then inject the oil into the two horizontal hydraulic cylinders at the back of the machine frame, and then the plunger will push the wedge to move forward. When it moves to the required position, stop the stop valve and adjust the thickness of gasket. When finish the adjustment, open the stop valve, the oil will be returned to the hydraulic cylinder by the pressure of movable jaw, trust plate and rod. At last, recompress the stretched spring to a certain position and turn down the stop valve.

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