How to adjust the discharge opening of jaw crusher

Jaw crusher thrust plate (also known as elbow plate), in addition to transferring power to make the moving jaw plate to swing back and forth, but also has the role of insurance, change its length can also play a role in adjusting the discharge opening.

When the jaw crusher crushing cavity into the unbreakable material (such as iron balls, iron, etc.), in order to protect the main parts of the equipment from damage and the use of rear thrust plate as a crusher insurance components. The rear thrust plate is generally cast into a whole with cast iron, in which a groove or a number of small holes to reduce its sectional strength; can also be cast into two pieces, and then connected with screws (or rivets), composed of a combination of thrust plate. When the non-crushable material into the crushing cavity, the equipment load, the huge crushing force transmitted to the thrust plate resulting in thrust plate fracture or combination of thrust plate screw shear off, the machine stops working, play the role of insurance.

With the continuous wear of the tooth plate, the discharge opening gradually becomes larger, the product continues to become coarser, in order to obtain qualified product size, need to regularly adjust the size of the discharge opening. There are two main adjustment methods for the discharge opening:

(1) gasket adjustment, that is, in the rear thrust plate behind the support seat and the back wall of the frame to put a set of gaskets, increase or decrease the number of gaskets or change the thickness of the gasket, you can achieve the purpose of adjusting the discharge opening. This method is compact and reliable, large and medium-sized jaw crusher mostly use this adjustment method.

(2) Wedge adjustment, is placed on the thrust plate back seat and frame between the two wedge adjustment, suitable for small crusher.

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