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Why is the jaw crusher returning material?

Jaw crusher returning refers to the phenomenon that the broken material should be discharged from the discharge port but flew out from the feed port under the action of the jaw plate. This is related to the force of the material. Why is it? What is the return?

1. The width of the discharge opening is too large. For the crusher of the same specification, the discharge port is adjusted to different sizes, and the angle is also different. When the width of the discharge opening is larger, the possibility of returning the material is greater.

2. Parts and drawings do not match the dimensions of the drawings. In the processing and assembly of the components of the jaw crusher, the dimensions of the components, such as the length and thickness of the jaws, the length of the brackets, the angle of the brackets, and the dimensions of the frame cavity, do not match the design dimensions of the drawings. If the angle is increased, it may cause a return.

3. The material is not balanced. The material to be broken does not move upwards or downwards in the crushing chamber of the jaw crusher, and is in an equilibrium state, but once the angle is increased, the force of the material in the vertical direction is unbalanced, and the upward component is greater than The downward component force, at this time, the material moves in the direction of the feed port under the action of the upward force component, resulting in a returning phenomenon.

4, the size of the material to be broken is too different. When the size of the material to be broken of the jaw crusher varies greatly, for example, a large piece of material is congested between two small pieces of material, and a returning phenomenon may occur at this time.



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