Brief introduction

Jaw crusher is a commonly used crushing equipment in coarse crushing operation, widely used in mining smelting, building materials, road, railway, water conservancy and chemical industry of all kinds of ore and bulk material crushing. When the jaw crusher is working, there may be a return phenomenon: the material is not squeezed by the movable jaw plate and the fixed jaw plate, but is squeezed out of the feed port. This situation will not only reduce productivity, but also may cause harm to the human body. This paper mainly introduces the reasons for the return of jaw crusher and the solutions for your reference.

First, the reason for the return of the jaw crusher:
1, the problem of the equipment itself: the size of the jaw crusher parts does not match the drawings, such as the length, thickness of the jaw plate, the length and Angle of the elbow plate, and the size of the frame cavity do not meet the requirements, resulting in poor mechanical quality. After long-term use, the Angle between the two jaw plates is too large, more than twice the friction Angle, the friction between the material and the jaw plate is insufficient, unable to overcome the upward force of the crushing force, the material is extruded under the action of the vertical upward force, sliding to the inlet.
2, the force of the broken material is not balanced: under the upper and lower force of the movable jaw plate, the force of the material in the broken chamber in the vertical direction is easy to be unbalanced. When the upward component is dominant, the material is susceptible to the influence of this force, resulting in the occurrence of the material return phenomenon.
3, the width of the discharge port is too large: the width of the discharge port is too large, the material and the jaw plate are in direct contact with friction, the jaw plate is seriously worn, and it is easy to return the material.
4, the size difference of the material to be broken is large: when the size difference of the material to be broken is large, it is easy to lead to uneven feeding, which leads to the phenomenon of material return.

Second, the solution of the return of the jaw crusher:
1, choose the appropriate crusher specifications: according to the material situation to choose the appropriate specifications of the crusher, to ensure that the size of the crusher parts are consistent with the drawing.

2.Timely repair or replacement of worn jaw plate: When the jaw plate is seriously worn, the jaw plate should be repaired or replaced in time to reduce the phenomenon of material return.
3, adjust the width of the discharge port: adjust the width of the discharge port appropriately to avoid too large or too small to ensure that the material can smoothly pass the crushing chamber.
4, screening materials: the material is screened to ensure that the size difference of the material to be broken is not large, you can choose the coarse jaw crusher for pre-processing when processing, and then use the fine jaw crusher for finishing.
5, optimize the motion trajectory of the movable jaw plate and the design of the crushing chamber: ensure that the material is balanced in the crushing process and improve the crushing efficiency.
Through the above method, the problem of the return of the jaw crusher can be effectively solved, and the crushing efficiency and service life of the equipment can be improved. If you want to know more about the crusher, welcome to call or online consultation, message, Sandro Heavy industry will send professionals to answer your questions.

As a large mining machinery and equipment manufacturers and suppliers, has a wealth of crusher manufacturing experience, machine quality is good, high efficiency, complete variety, in the market is very popular with investors, if you want to know more about the crusher information, welcome to call or online consultation, message, Leitos machinery will send professionals to answer your questions