On a promising direction of research of grain separation by length

Abstract

Separation of grain materials is one of the most important engineering tasks in agricultural production. The technological process of separation is implemented mainly by separators with a flat oscillating separating surface. Due to numerous research and design works, these devices have reached their maximum capabilities. It is also not possible to significantly intensify the working process using trieurs with a cellular working surface for separating grain by length. Fundamentally new technical solutions are needed to increase the efficiency of cleaning, increase the specific productivity, simplify the design (refusal of vibration loads in the working process), and enable block-modular execution. Centrifugal-sieve separators using a complex inertial-gravitational field may meet these requirements. A new method of separating grain particles developed by B.T. Tarasov allows for sufficient use of centrifugal forces, has a significantly higher specific productivity than cellular trieurs. Comparative analysis of the completeness of long impurity separation, the developed separation method with the existing trieurs with a cellular surface shows that this value is somewhat lower. However, the proposed methods for intensifying the working process of centrifugal-sieve separation allow to significantly increasing the completeness of long impurity separation and approach the quality of the work of a cylindrical cellular trieur. This shows the feasibility of further research of this separation method and careful design development. At present, work is underway to implement the developed separation method in stationary technological lines as well as in mobile grain cleaning units, and it is being patented. Therefore, this area of research has real prospects.