How does the cone crusher control the output particle size

Cone crusher is a very commonly used crushing equipment in crushing sand and gravel aggregates. The grain shape of sand and gravel aggregates is the main index to measure the cone crusher. In the field of sand and gravel crushing, the control of the grain shape of crushed sand and gravel is very effective. necessary. How does the cone crusher control the particle shape of sand and gravel?
 

In the field of construction, the increase of needle-like particles in concrete aggregates will lead to a decrease in the overall compressive strength of the building and increase the consumption of cement in the construction process; similarly, in the asphalt mixture, the increase of needle-like particles The increase will also lead to a decrease in the overall density and compressive and tensile strength of the mixture. It can be seen that the number of needle-like grains plays an important role in the quality of crushed products.

When the material passes through the crushing cavity of the cone crusher, the needle piece rate will increase rapidly with the occurrence of extrusion crushing faults, and will gradually fall back after reaching a certain level. Before the material enters the crusher, the particle size will become more uniform after screening or particle size separation process; after entering the crushing chamber, the material will be squeezed and crushed, and needle-like particles will begin to appear. As more and more material particles are squeezed and crushed, the needle-shaped particles increase sharply; when the crushing faults further increase, some material particles including needle-shaped particles will be squeezed twice or more The role of pressure.

In the second half of the crushing process, the needle piece rate of the material in the crushing cavity is continuously decreasing and returns to the appropriate range. It can be seen that during the working process of the cone crusher, the frequency of extrusion and crushing is increasing, which is conducive to reducing the needle-like particles in the crushed products. Therefore, the increase of the spindle speed can improve the particle shape quality of the crushed product to a certain extent.