VSI series high efficiency vertical shaft sand making machine is the stone crushing equipment with domestic and international advanced technologies, which is increased on the basis of Germany advanced technology, combining the actual demand of China sand-making industry. It is especially efficient to crush harder and causticity materials, such as emery, and magnesium sand.

Features:

• Simple structure and low cost.
• High crushing rate, energy-saving.
• It has fine crush and coarse grinding function.
• It is little affected by the moisture content, and the content can get up to about 8%.
• It is suitable to crush medium hard and hard materials.
• Excellent product of cubic shape, and small fraction of elongated flaky particle shape.
• Small wear from impeller liner, and easy maintenance.
• Working noise is lower than 75 decibel.

Working Principle:

Feedat center: Raw material falls down into feed hopper, and then enters impellor through central entrance hole. It is accelerated in high-speed impellor, then is thrown out at speed of 60-75m/s. When hitting impact plate, it is crushed. Final products come downwards though outlet.
Feedat center &sides: when material is poured into feed hopper, it is divided into two parts by material-dividing plate. One part enters into impellor through the center of material-dividing plate, the other falls down from outside of material-dividing plate. Material, which is thrown out by impellor at speed of 60-75m/s, hits other material coming down from outside of material-dividing plate. In this way, material is crushed.