1. The problem of jaw crusher
The parts of the new jaw crusher are inconsistent with the dimensions of the drawings, such as the length and thickness of the jaw, the length of the bracket, the angle of the bracket, the size of the inner cavity of the frame, and other irregularities resulting in inferior products; The included angle is er than twice the friction angle, so that the material and the jaw cannot generate enough friction to overcome the upward component of the crushing force, and the material is squeezed out under the action of the vertical upward force and slides toward the feed.口Direction.
2. The material is unbalanced
The vertical force of the material to be broken in the crushing cavity is easy to be unbalanced, and the phenomenon of material return is easy to occur under the action of the upward component of force.
3. The width of the discharge opening is too large
For jaw crushers of the same specification, the larger the width of the discharge opening, the easier it is to return materials. During the crushing process, the material is in direct contact with the jaw plate, causing friction. When the jaw plate wears more severely, the possibility of material return phenomenon is er.
4. The size of the material to be broken is too different
When the size of the material to be broken by the crusher varies , the phenomenon of material return is easy to occur. Solutions
1. According to the material situation, use a crusher of appropriate specifications.
2. When the jaw plate is worn out, the phenomenon of material return occurs, and the jaw plate should be repaired or replaced in time.
3. When the material size difference is too large, screening is performed *; the coarse jaw crusher is pre-processed, and then the fine jaw crusher is used for finishing, which can ensure the processing requirements of the material.
4. At the joint surface of the movable jaw and the movable jaw, a wedge-shaped backing plate is added to reduce the angle between the two jaw plates, so that the angle between the two jaw plates is less than twice the friction angle, and the phenomenon of material return is eliminated.
5. A protective plate can be welded above the jaw breaker inlet to prevent the material from flying out of the inlet and endangering the personal safety of the operator.