The VSI Crusher (vertical shaft ), also called sand making machine and rubble shaping machine, is a
kind of crusher impacted by the materials themselves. It is of high energy but
low consumption and of international advanced level developed by introducing
foreign outstanding technology of the same type of products. At present, it is
the most advanced and practical equipment for medium-sized and fine crushing and
shaping.
It is widely used in fine crushing and rough grinding of metal,
mineral, building aggregate, concrete, anti-fire material, glass raw material,
manufactured sand and all kinds of metallurgical slug. It is also can utilized
in shaping of high rank road surface. Compared with other kind of crusher, it is
more advanced in intermediate hard, extra hard and abrasive material crushing,
such as gravel, quartz, sandstone, basalt, silicon carbide, diamond grain and
sintered bauxite.
VSI crusher working principle:
Feed at center:
After
materials are fed into the hopper, they are, through a central feeding hole,
thrown to the impellers, which are rotating at a high speed. Then, the material
are accelerated and thrown out of impeller area. These part of materials, first,
impact on the other part of materials, which are falling down, and then, they
together strike on the material layers or on impact blocks. Due to rebound, they
will back to top of crushing cavity and again be shot back to strike on another
part of materials which are shot from the impeller flow and form a continuous
material curtain. The final products will be discharged from the discharge open
at the bottom.
Feed both at center and at sides:
After materials are fed
into hopper, they fall down through a circular hole and are divided into two
parts by the distributing mantle. One part enters the impellers, which are
rotating at high a speed; the other part fall down along the mantle. The first
part are accelerated at the impeller area and are thrown out and to strike on
the falling materials at sides. Then, they together strike on the material
layers in whirlpool cavity and again be shot back to strike on another part of
materials which are shot from the impeller flow and form a continuous material
curtain. The final products will be discharged from the discharge open at the
bottom.
Sand making machine :
Ball
mills :