How to make jaw crushers more stable when crushing materials?

Jaw crushers are the main equipment for the initial crushing of ore materials. Due to their harsh working environment, it is necessary to optimize and strengthen their components and master essential maintenance knowledge to improve efficiency and equipment stability during production. Extending the service life of jaw crusher plates can be achieved through improvements in design, material selection, assembly, and usage. This significantly extends the service life of the jaw crusher plates, thereby increasing the production efficiency of the jaw crusher and reducing production costs.

Currently, the * widely used crushers are divided into coarse and fine crushers, crushing materials with a compressive strength of less than 350 MPa. Jaw crushers are widely used in many industries such as mining, metallurgy, building materials, highways, railways, water conservancy, and chemical industries. They are characterized by a large crushing ratio, uniform product particle size, simple structure, reliable *, easy maintenance, and economical operating costs. How to control the stability of jaw crushers when crushing materials? Here's an explanation:

The material entering the stabilizing hopper consists of two parts: circulating material (edge ​​material) and a mixture from the cement batching silo. The material exiting the roller press is divided into two parts: a portion is recycled to the stabilizing silo, and the other portion enters the crusher. A key function of the crusher is to stabilize the material flow into the crusher by maintaining a stable material level in the stabilizing silo. Ideally, when the material level in the stabilizing silo remains relatively constant, the amount of material entering and exiting the silo should be approximately equal, thus stabilizing the grinding system's operating conditions. The method for stabilizing the material level G in the stabilizing silo is as follows: when the material level G decreases for some reason, the angle of the distribution plate under the roller press is manually increased to increase the return material and thus increase the material flow Q into the silo; conversely, the angle of the distribution plate is decreased. However, since this adjustment process relies entirely on continuous observation of changes in the material level in the silo, it is prone to large errors and long lag times, resulting in poor stability of the material flow into the crusher. This often leads to "over-grinding" or "empty grinding," affecting the crusher's crushing efficiency and output.

While adjusting the material quantity in the stabilizing bin during crushing can lead to instability in the crusher's operating conditions and thus affect its output, the adjustment process itself is entirely reasonable (actually a negative feedback adjustment process). The problem can be solved by transforming the manual adjustment process of the material quantity in the stabilizing bin into an automated closed-loop control process. Specifically, the target value is the setpoint for the material quantity in the stabilizing bin (given by the mill operator on the control panel in the central control room), and the actual material quantity in the stabilizing bin is the controlled object. Through continuous PID adjustment of the angle of the distribution plate, the actual material quantity in the stabilizing bin is made approximately equal to its setpoint.