Overview
VSI impact crusher is a vertical-shaft impact machine used for manufactured sand and aggregate shaping. Material drops onto a high-speed rotor and is thrown against the material lining the chamber, breaking along natural fractures through rock-on-rock impact. The deep rotor holds a larger material bed and runs with dual drive motors, which gives higher throughput and a more cubical product than conventional shallow-rotor designs.
The machine supports three crushing modes and can run continuously through long production shifts. It has largely taken over from hammer and roller mills in sand making, because autogenous breakage delivers better particle shape with lower wear-part consumption. It is commonly placed after a jaw or cone crusher to shape coarse aggregate or convert crushed rock into saleable manufactured sand.
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Working principle
Material enters vertically from the top and falls onto the rotating impeller. Centrifugal force accelerates it and throws it toward the material cascading around the rotor in an umbrella-shaped curtain. The accelerated rock strikes this slower bed and the chamber anvils, where most of the breakage occurs on impact rather than through compression.
Inside the chamber the material forms eddies that collide and rub against each other repeatedly before discharging from the lower outlet. Oversize particles are returned by a closed screening circuit for further passes, so the finished product is held to the required grading. The machine can be fed through the center only or through the center and sides together, letting operators balance fineness against throughput for the feed being processed.
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Features & Benefits
1. Special light oil lubrication system ensures the temperature to be within 25 ℃
2. Brand new automatic protection device provides the machine with vibrating, oil filtering and warning system;
3. New type oil filtering device ensures the bearings and other transmission devices not being abraded and prolong their service time;
4. Optimized design of wearable materials has prolonged the service time of the machine by 40%, so the cost is lowered by more than 40%
5. Better design of the impellers reduces the resistance of materials; high lightens passing through quantity of materials and crushing ratio, so the efficiency is raised by 30%-60% compared to traditional machines.
6. Hydraulic system allows automatic uncovering, which reduces labor intense and makes maintenance easier.
7. The mainframe adopts new techniques, which strengthens the machine structure and tenacity, and ensures stable performance. The quality of the machines is lift to a higher level.
8. VSI crusher employs advanced light oil anti-leakage device, which saves the trouble of changing oil seal.
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Specifications
Model Feed at center&sides Feed at center Soft Material Hard Material REV (r/min) Power (kw) Motor Model Machine Size (mm) Capacity(t/h) Max. Feeding(mm) VSI7611 120-180 60-90 35 30 1700-1890 4-55×2 Y250M-4/55 4100×2250×2258 VSI8518 200-260 100-130 40 35 1520-1690 4-90×2 Y280M-4/90 4140×2280×2425 VSI9526 300-380 150-190 45 40 1360-1510 4-132×2 Y315M-4/132 4560×2450×2780 VSI1140 450-520 225-260 50 45 1180-1310 4-200×2 Y315L2-4/200 4560×2450×2780 -
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