РАСЧЕТ КОНСТРУКТИВНЫХ ПАРАМЕТРОВ ЗАГРУЗОЧНОГО УЗЛА ДЕЗИНТЕГРАТОРА ПРИ УСТАНОВКЕ ПАТРУБКА РЕЦИКЛА МАТЕРИАЛА

Abstract

Currently, disintegrators are equipment used for grinding, mixing and activation of a number of materials. The possibility of obtaining a grinding product with a given granulometric composition is one of the advantages of disintegrators. An experimental unit with a recycling pipe is created to obtain a narrow granulometric composition of the grinding product. It provides unloading of the finished product and returning the grits for additional grinding to the chamber. The branch pipe of the recycle is a rubber-fabric pipe of circular cross-section with a radius of curvature, which ensures the movement of a two-phase medium from the discharge zone to the loading part of the disintegrator. When performing theoretical studies of the grinding process, it is necessary to coordinate the throughput of the loading unit and the node of the disintegrator recycle. In addition, the mass flow rate of the material through the feeder and the mass flow rate of the material (throughput) passing through the rows of percussion elements must be the same for the balanced operation of the disintegrator and the feeder. The mass flow capacity of the coarse material moving in the recycling pipe is determined based on the assumption of the linear nature of the change in bulk density when the material moves inside the recycling pipe. In result of theoretical researches, the analytical expression is received allowing to define a radius of a pipe of the modernized feeder proceeding from constructive and technological parameters of a disintegrator with a branch pipe of a recycle. A calculation scheme for determining the radius of the pipe of an improved disintegrator is presented. The analysis of obtained analytical expression allows to conclude that the radius of the pipe of the modernized unit is associated with the design and technological parameters of the disintegrator