Vertical roller mill has many different forms, but it works basically the same. All of these forms of machine comes with roller (or
the equivalent of roller grinding parts), and roller along the track of the disc at the level of circular movement imposed by
external grinding roller in the vertical pressure on the disc on the material being the joint action of compression and shear, and
to crush.
Operation
Material grinding process motor through reducer rotating drive disc, the material falls from the mill under the central entrance
and exit, under the action of centrifugal force to the disc edge by the roller to move and the crushing, grinding out lap after the
material was speed up the flow to and vertical mill with one of the separator, after the meal by the separator back to the mill,
the re-grinding; powder while grinding out with air, dust collection equipment in the system to collect down, that is, products .
Established through the mill in the pneumatic conveying of materials, a larger air flow rate, which can use waste heat of gas, at
the same time dry grinding operations.
Vertical Roller Mill Principle
Used in cement grinding production grinding parts of its various forms, there is a cylinder, cone type, ball type, etc., and roller
surface is also flat, curved, convex round noodles. Applied to the grinding roller to roller grinding along the track bed in close
contact with the material strength of a spring pressure, hydraulic, etc..
How Vertical Roller Mill Works
It has two pairs of grinding rollers, each pair of roller composed of two narrow rollers, mounted on the same axis and can rotate
at different speeds. There are two circular disc slot, and roller to the tire shape, work pressure in the tank. Disc roller and the
relative sliding velocity between small and roller can swing, even if the roller sleeve and the disc after the liner wear can
guarantee a good abrasive, will not affect the grinding effect. Roller symmetrical structure, one side can be upside down after use
and wear. Material grinding process: hydraulic pneumatic roller device through the pressure applied to the material on the crushing
of materials, the materials have been moved to crush the edge of disc, from the disc around the nozzle from the exhaust air to
improve these materials to Separator.Meal to separate returns after a concentrated mill, fine powder was collected in the
precipitator unloading. In the gas flow is small, the meal can not be increased to enhance air flow, they would fall through the
nozzle discharged outside the mill, bucket elevator to be transported to the feeder of vertical roller mill, and was re-grinding
mill feed people. This cycle features of the way there:
ring by adjusting the air valve, can change the product fineness can Shide mill bed load material uniformity and stability,
improving the grinding efficiency;
coarse particles in the external circulation, helps reduce Fan power consumption and overall system power.
