DOI: https://doi.org/10.5513/JCEA01/23.2.3345
Original scientific paper
Precise grading and sorting of sunflower plant materials in industrial facilities
2022, 23 (2) p. 327-341
Igor Shevchenko, Elchyn Aliiev
Abstract
The purpose of our research is to increase the efficiency of the mechanical and technological process of sunflower seed mixture separation with vibro-pneumatic separators. This principle is based on the interaction of seed flow with the surface having vibration-type vibration load by substantiating their rational regime-technological parameters. A system of differential equations for the motion of sunflower seeds as granular gas under the action of a vibrating surface is considered, considering the elastic-damping interaction and the physical and mechanical properties of seeds. The solution of differential equations system is the basis of the physical and mathematical apparatus for the numerical system implemented in software package STAR-CCM +. To build physical and mathematical models, the sunflower seeds are assumed to have the form of ellipsoids with a certain density and effective diameter. As a result of numerical simulation of the process of moving sunflower seed material under the action of a vibrating sieve, the dependencies of the change in total concentration – θ and productivity – q on seed supply – Q, sieve angle – α, sieve oscillation frequency – ψ and sieve oscillation amplitude – A. numerical modelling of the process of moving sunflower seeds under the action of a vibrating surface, the dependencies of the change of filling factor – χ, distribution coefficient – δ and productivity – q on seed supply – Q, angles of inclination of vibrating surface – α and β, oscillation frequency – ψ, oscillation amplitude – A and a given air flow rate – V.
Keywords
seed material, sunflower seeds, separation, model, parameters, optimization
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