iipp publishingJournal of Applied Engineering Science

MATHEMATICAL MODELing OF THE GRAIN MATERIAL SEPARATION IN THE PNEUMATIC SYSTEM OF THE GRAIN-CLEANing MACHINE


DOI: 10.5937/jaes17-22640
This is an open access article distributed under the CC BY-NC-ND 4.0 terms and conditions. 
Creative Commons License

Volume 17 article 641 pages: 529- 534

Ildar Badretdinov* 
Bashkir State Agrarian University, Russian Federation

Salavat Mudarisov 
Bashkir State Agrarian University, Russian Federation

Marat Tuktarov 
Bashkir State Agrarian University, Russian Federation

Elizabeth Dick 
Bashkir State Agrarian University, Russian Federation

Svetlana Arslanbekova 
Bashkir State Agrarian University, Russian Federation

The article presents the results of a study of a high-performance grain cleaning machine for the preliminary cleaning of grain pile with a closed aspiration system. The flow regimes of the “air-grain pile” mixture determined by the Reynolds number and the bulk concentration of particles are established. As a result of the modeling, further directions for improving pneumatic systems of grain cleaning machines were determined: the cleaning effi ciency of the Е0 fraction of pure grain from light impurities, shriveled and crushed grain reaches 82%, the output cleanliness of the grain was 93.7%, and the loss of full grain to waste Pz = 0,017%. The average speed of the air fl ow in the separating channel is U = 7.12 m/s, its coeffi cient of variation across the width of the separating channel is v = 12,7%. The results of the experimental data confi rmed the adequacy of using mathematical modeling of the air fl ow in the pneumatic system of a grain cleaning machine to substantiate the basic parameters of the pneumatic system.

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