{"id":9946,"date":"2026-09-04T14:36:42","date_gmt":"2026-09-04T06:36:42","guid":{"rendered":"https:\/\/www.clirik.com\/?p=9946"},"modified":"2026-09-09T15:41:37","modified_gmt":"2026-09-09T07:41:37","slug":"vertical-roller-mill-design-core-working-principle","status":"publish","type":"post","link":"https:\/\/www.clirik.com\/fr\/vertical-roller-mill-design-core-working-principle\/","title":{"rendered":"Conception du broyeur \u00e0 rouleaux vertical et principe de fonctionnement de base"},"content":{"rendered":"
\n
\n


The core operating mechanism of the vertical roller mill (VRM, vertical mill for short) is based on the principle of “material bed grinding”: the grinding roller exerts a specific hydraulic force on the rotating grinding disc, thereby squeezing and crushing the raw material. From the core design point of view, the vertical mill cleverly integrates crushing, grinding, drying, dynamic powder selection and material transportation in a continuous and closed system. However, in practice, engineers in many factories are often bothered by the two problems of “high vibration jump” and “high specific energy consumption (SEC). In fact, as long as the internal structural parameters of the knife-especially to adjust the hydraulic loading curve, optimize the air spray ring gas flow rate and improve the geometry of the powder separator-can directly break through these operating bottlenecks.<\/p>\n\n\n\n

\"A<\/figure>\n\n\n\n

<\/span>The Core Working Principle Of Vertical Mill: Beyond Basic Mechanics<\/span><\/h2>\n\n\n\n

Crushing materials inside the vertical mill requires extremely precise control of extrusion and shear forces. Remember that the equipment does not rely on direct “hard-hitting” metal contact between the grinding roller and the grinding disc to crush the particles. The normal operation of the vertical mill depends on maintaining a stable and dynamic “material bed” between the grinding parts “.<\/p>\n\n\n\n

T.P.G. Grinding Triangle<\/h3>\n\n\n\n

If you want to really play with the vertical mill operation, you must understand the so-called “T.P.G. grinding triangle”: tension (Tension), pressure (Pressure) and gap (Gap).<\/p>\n\n\n\n

Tension (hydraulic pressure): The hydraulic cylinder is responsible for applying downward pressure to the grinding roller. The higher the pulling force, the higher the grinding efficiency, but it also means that the power consumption of the main drive motor will soar exponentially. Therefore, the operator must match the hydraulic pressure curve with extreme precision according to the Bond Work Index (BWI) of the material.<\/p>\n\n\n\n

Pressure (gas flow dynamics): high-speed hot air will enter the mill through the jet ring surrounding the mill. The effect of this air flow is to lift the crushed particles upwards. If the wind speed is not enough, the material will fall back in a large area, which will not only cause the grinding disc to overload, but also cause the motor current to soar instantly.<\/p>\n\n\n\n

Gap (roller disc gap): The mechanical retaining ring at the edge of the grinding disc determines the thickness of the material bed. The gap between the grinding roller and the grinding disc must be strictly proportional to the maximum feed particle size. If the gap is stuck too dead and the material bed is completely pressed through, it will cause extremely serious metal friction and severe vibration of the equipment.<\/p>\n\n\n\n