Research in centrifugal rotary grinder of forage grain
2021
Savinyh, P., North-East Federal Agrarian Scientific Centre named after N.V. Rudnitsky, Kirov (Russian Federation) | Isupov, A., North-East Federal Agrarian Scientific Centre named after N.V. Rudnitsky, Kirov (Russian Federation) | Ivanov, I., Vologda State Dairy Farming Academy named after N.V. Vereshchagin (Russian Federation) | Ivanovs, S., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia)
One of the most promising tools for grinding grain materials in recent years are centrifugal rotary grinders for forage grain with a knife working tool. A combination of grinding by cutting and chipping with feeding the crushed material to the cutting pairs due to inertial forces, and not due to pneumatic transport, can significantly reduce the specific energy consumption in comparison with the most common grinders – hammer crushers, which use impact for grinding. The object of the research is the design of a centrifugal rotor grinder with one movable lower disc with contractors installed on it, with two degrees of grinding, and a separating surface, consisting of straight wedge-shaped knives. The research of the operation of the centrifugal rotary grinder was carried out on a laboratory sample using the method of planning a multifactor experiment, in particular, the plan of the Box-Benkin experiment. The mathematical models obtained from the experimental data made it possible to describe the on-going processes with an accuracy of more than 95% and to establish the influence of factors and their interactions for each selected optimisation criterion, as well as to obtain information for understanding the on-going physical processes.
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