Details Vertical Roller Mill
Sintered Bauxite Raymond Mill gear by the main motor, coupling, reducer of three parts, installed in the lower mill, it is necessary to drive the disc drive, but also bear the grinding disc, the material, the weight of the roller and the pressure applying means grinding pressure, vertical mill is one of the most important parts. To accommodate more users of low quality coal pulverizer goods anthracite trend, vertical coal mill taken measures to increase the primary gear reduction ratio to reduce the rotational speed of the disc, while improving the form and structure of the grinding disc roller sleeve lining, making disc the formation of a stable layer of material thereby increasing the grinding pressure grinding roll, improve grinding efficiency, reduce the possibility of vibration mill to produce more stable and reliable. Is a vertical roller mill grinding important part, vertical coal mill liners and tire-shaped with curved roller sleeve, the roller sleeve is symmetrical, the wear to a certain extent can be used upside down, extending its life. Roller bearing using the new mechanical seal, both to improve the reliability of the seal, while sealing is not required because the fan and reduces the oxygen content of the mill, reducing the possibility of an explosion inside the mill. Generally vertical mill roller bearings lubricated with grease, but because of the larger coal moisture, in order to increase drying capacity, grinding chamber gas temperatures generally up to 100 degrees, could easily lead to improper operation of the roller bearing high temperature, resulting in evaporation of grease modification on bearing life.
Process Principle Of Roller Mill
Driven by the main motor reducer rotating disc, while the wind from the air inlet into Used Portable Ball Mill, the material by spiral feeder to the discharge port falls under the central disc, under the effect of centrifugal force, the material from the central disc evenly to the edge moved past the grinding roller area on the disc by the rolling mill rolls, bulk materials directly crushed fine material after the material is formed by extrusion bed intergranular pulverization. Crushed material to the disc edge continues to move until it is taken away by the strong airflow at the air ring, while the larger particulate material falling onto the disc again to continue grinding the material in airflow through the upper part of the separator, the rotor under the action of the blade, coarse particles back on disc grinding, qualified powder with the air along with the mill is collected powder collector system, is collected powder is ultra-fine vertical mill grind product. When mixed into the mass of iron and other debris with the movement of the material to the edge of the disc, due to the large weight of its own which can not be blown up, drop down to the mill chamber is mounted at the bottom of the disc plate scraper scraped into the slag discharge port outside the machine .