Assessing the Adequacy of Mathematical Models of Light Impurity Fractionation in Sedimentary Chambers of Grain Cleaning Machines

Saitov, V. E.; Kurbanov, Rustam; Suvorov, Anton

doi:10.1016/j.proeng.2016.06.728

Cited by 38 publications

(19 citation statements)

References 2 publications

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“…and light impurities (husks, small weed seeds, etc.) occurs by airfl ow [1][2][3][4][5]. However, modern grain cleaning machines for preliminary cleaning of grain pile with a pneumatic system as their main working element, in their operational qualities do not fully meet the increasing requirements of modern agricultural production [6][7][8][9].…”

Section: The Problem Statementmentioning

confidence: 99%

Mathematical modeling of the grain material separation in the pneumatic system of the grain-cleaning machine

Badretdinov¹,

Мударисов²,

Tuktarov³

et al. 2019

J Appl Eng Science

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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 fl ow 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 Е 0 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 P z = 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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Section: The Problem Statementmentioning

confidence: 99%

Mathematical modeling of the grain material separation in the pneumatic system of the grain-cleaning machine

Badretdinov¹,

Мударисов²,

Tuktarov³

et al. 2019

J Appl Eng Science

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show abstract

“…Therefore, seed sorting methods are being continuously improved by searching for new separation traits and designing new equipment [17]. Seed mixtures are separated in a stream of air in specialized pneumatic cleaners as well as in simpler threshing machines [18][19][20][21][22]. Air flow is frequently used to separate seeds because pneumatic devices have a simple structure and are easy to operate.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Selected Factors on Separation Efficiency in a Pneumatic Conical Separator

et al. 2020

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Pneumatic separation is one of the available methods for cleaning seed mixtures. Variously shaped seeds, including spherical (vetch), elongated (wheat), and pyramid-shaped seeds (buckwheat), were analyzed in this study. A seed mixture containing 80% of main crop seeds and 20% of other crop seeds imitating impurities was separated in a pneumatic separator with the shape of an inverted cone in a stream of air. The regression equations describing the separation efficiency of the main crop seeds and other crop seeds imitating impurities (η) and the separation efficiency index (ε) were characterized by high and very high fit to empirical data. The coefficient of determination for the analyzed seed mixtures ranged from 0.71 to 0.99. The conical separator supported effective separation of seed mixture components in a stream of air.

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“…In agrarian production a variety of seeders are used for sowing crops [1][2][3], among which modern machine designs are used [4][5][6][7]. However, for the sowing of grain crops in the former USSR territories to the present day are widely used rather simple constructions and reliable in the work disc seeders SZ-3,6 of various modifications [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Mathematical modelling of traction resistance of the improved opener of grain seeder

et al. 2020

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The object of the study is a double disc coulter with a pressure plate. The aim of the research was to simulate the operation of the double disc coulter using a grain seed drill as an example. Analytical dependencies for determining the traction resistance of the improved coulter are presented. The method of calculating the drag resistance of a double disc coulter with an original pressure plate installed on it is given. The components of the traction resistance balance have been determined and the dependence on the sowing depth has been established. 3D graphical dependences of the traction resistance of serial and advanced coulters on the speed and depth of its movement have been constructed based on the results of calculations. The main influence is the placement depth. Speed of movement of the seeder in the considered interval of its values does not render essential influence on traction resistance. Installation of an additional pressure plate increases traction resistance to 5 %.

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Assessing the Adequacy of Mathematical Models of Light Impurity Fractionation in Sedimentary Chambers of Grain Cleaning Machines

Cited by 38 publications

References 2 publications

Mathematical modeling of the grain material separation in the pneumatic system of the grain-cleaning machine

Mathematical modeling of the grain material separation in the pneumatic system of the grain-cleaning machine

The Effect of Selected Factors on Separation Efficiency in a Pneumatic Conical Separator

Mathematical modelling of traction resistance of the improved opener of grain seeder

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