The working principle of the shelf box roller press is mainly based on the low energy consumption characteristics of the high pressure material layer crushing. The following is a breakdown of how it works:
The roller press squeethe material through two rollers with equal speed and relatively slow rotation. One of the two rollers can be moved in a horizontal direction to adjust the gap between the two rollers to meet the extrusion requirements of different materials. The hydraulic system acts on the moving roller to generate a pressure of up to 50 to 300 Mpa, ensuring a high pressure environment between the two rollers.
Under the extrusion of the high pressure area, the particle size of brittle materials such as the composition materials of the shelf box decreases rapidly. After the extrusion material, the fine powder content can reach 20% to 30%, and the material content of less than 2mm is more than 70%. In addition, all the surfaces of the crushed material produce massive cracks, which significantly improves its wear accessibility and thus significantly reduces the grinding energy consumption required to enter the next process.
The design of the roller press is based on the principle of material bed crushing, and the key is that a dense material layer must be maintained between the double rollers. When the material is forced to move downward, the squeezing pressure gradually increases until it is crushed and squeezed into a dense material cake and discharged from under the machine. This cake has low mechanical strength and high wear, which is very suitable for subsequent processing.
To sum up, the shelf box roller realizes the efficient crushing of brittle materials through high pressure extrusion, which has the advantages of low energy consumption, accurate particle size control and significant improvement of wear.