Super Fine Vertical Mill Working Principle

2021-08-11

Summary:LUM series vertical roller mill is a kind of material bed extrusion and crushing equipment. The grinding disc is driven by the motor (or hydraulic motor) throug

LUM series vertical roller mill is a kind of material bed extrusion and crushing equipment. The grinding disc is driven by the motor (or hydraulic motor) through the reducer to rotate around the center. The milled materials are fed to the center point of the grinding disc through the feeding device, and then spread outward with the rotating grinding disc in a spiral motion. The grinding roller is driven by the hydraulic pressure system to put pressure on the materials on the surface of the grinding disc, Extrude and crush materials; At the same time, the grinding disc drives the grinding roller to rotate through the pressurized material, which makes the grinding roller extrusion operation of clum series vertical roller mill become a continuous process. The extruded material continues to move outward with the rotation of the grinding disc.

When the overflow grinding disc encounters the high-speed air flow passing through the air ring, the finer materials will be blown up by the air flow, and the coarse materials that cannot be blown by the air flow will fall into the annular air duct, scrape out the grinding body by the scraping device, feed it into the circulating elevator, and then return to the mill for extrusion and crushing. At this time, the materials blown up by the air flow will fall onto the grinding plate again and be extruded and crushed again due to the decrease of the air flow speed in the rising process. The materials that continue to be carried up by the air flow will follow the air flow to the powder selection area of the dynamic and static combined powder concentrator, realize the separation of coarse and fine powder under the action of the rotating cage rotor, and the coarse powder will fall onto the grinding plate and be extruded and crushed again, The fine powder is sent to the cyclone along with the air flow for fine powder and gas separation.

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