Abstract
The article examines the study of the separation of seed material by grain density by a conical vibro-pneumocentrifuge, taking into account the distribution of air velocity in the cross section of the aspiration channel, to determine the rational form and parameters of the working bodies of the conical vibro-pneumocentrifuge, as well as technological indicators of the machine: supply, consumption, efficiency of seed separation into factions. Scientific research has formulated improved mathematical models of grain movement in the vibro-pneumofluidized layer of a conical vibrocentrifuge centrifuge, which take into account the change in the action of the centrifugal force depending on the grain coordinate along the height of the cone, allowing to determine the movement parameters with varying degrees of accuracy. It is substantiated that when using a conical support surface of a vibrocentrifugal centrifuge, the thickness of the mixing layer of grain increases in the direction of movement, and it is possible to determine by theoretical calculations the rational geometric and kinematic parameters of the rotor, which ensure a qualitative separation of the seed material by density. The obtained systems of nonlinear differential equations with initial conditions are solved in the MathCad software environment in the form of grain movement trajectories in the air flow, which allows to calculate and establish the trends of their movement trajectories, which differ by windage coefficients, and to determine the rational values of the parameters of the conical vibropneumocentrifuge.
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