MODELING THE OPERATION OF A DIELECTRIC SORTING DEVICE FOR THE PURIFICATION OF ALFERA SEEDS

Abstract

The study aimed at increasing the efficiency of a dielectric sorting device for cleaning alfalfa seeds by improving the design of a cleaned heap batcher. Using the general laws of mechanics, mathematical modeling and statistics, the authors carried out theoretical studies to model the movement of a heap in a dielectric sorting device when cleaning alfalfa seeds. The components of the heap of alfalfa seeds have various technological properties, which determine the difference in their trajectories during their movement inside the device. The authors determined separation conditions and the travel pattern of seed heap components passing through a casing and a chute board. It was found that at a drum diameter of 120 mm and an angular velocity of 5.22 rad/s, the separation angle of the seed heap components from the metering drum surface will amount to 80°. Therefore, the metered heap must be localized and directed to the dielectric drum surface using an additional device consisting of a casing and a chute board. Under these conditions, in order to ensure uniform supply of the cleaned heap to the dielectric drum of a sorting device, the connection coordinates of the casing with the chute board were determined as: хс = 24.63 mm and и ус = -58.02 mm, while the inclination angle of the chute board to the horizontal plane is a = arctg 0.4245.