Substantiation of basic scheme of grain cleaning machine for preparation of agricultural crops seeds

Giyevskiy, A M; Orobinsky, Vladimir I.; Tarasenko, A. P.; Чернышов, А. В.; Kurilov, D O

doi:10.1088/1757-899x/327/4/042035

Cited by 51 publications

(37 citation statements)

References 5 publications

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“…To obtain high-quality seeds and market grain used in food production, the uncleaned grain coming from harvesting combines must be immediately divided into the main (seeds and food) and forage fractions. For this reason, it is necessary to use the universal air-screen grain-cleaning machines [16]. Using the UI-ERL-2-1 screen classifier, we separated the samples of uncleaned grain obtained during harvesting winter wheat from rotary and conventional combines into fractions corresponding to screen aperture sizes.…”

Section: Resultsmentioning

confidence: 99%

Improving the Mechanization of High-Quality Seed Production

Orobinsky¹,

Tarasenko²,

Gievsky³

et al. 2018

International Scientific and Practical Conference "AgroSMART - Smart Solutions for Agriculture" (AgroSMART 2018)

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This paper presents the indicators of quality of the grain obtained by harvesting winter wheat with conventional and rotary combine harvesters. It was identified that rotary combines substantially decrease both shattering and micro-damage to grain. The results of the research indicate that agribusiness enterprises should primarily use rotary combines to harvest seed crops. This, in turn, will allow to raise the qualitative characteristics of the seed grain, reduce the seeding rate and increase the crop yield. During the post-harvesting handling of grain heaps that arrive at the grain cleaning assemblies working according to the fractional flow technology using the universal high-performance machine, it is necessary to separate the forage fraction of grain with seeds less than 2.6 mm. This will allow to remove the air-screen cleaner machine for the secondary cleaning as well as the indented cylinder unit while removing the need for two norias for transporting grain towards them and moving it with the auger in the indented cylinder unit. Coarse impurities and unthreshed grain will be separated by a seed blower. This way, broad use of rotary combine harvesters to harvest cereal crops will allow not only to reduce shattering and micro-damage to seed grain during harvesting but also to simplify the seedcleaning plant, which in turn will lead to reduced costs of postharvest handling of market grain and seeds.

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Section: Resultsmentioning

confidence: 99%

Improving the Mechanization of High-Quality Seed Production

Orobinsky¹,

Tarasenko²,

Gievsky³

et al. 2018

International Scientific and Practical Conference "AgroSMART - Smart Solutions for Agriculture" (AgroSMART 2018)

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“…In such fl ows, light particles move (are separated) by the air fl ow due to the aerodynamic drag force, which exceeds the gravitational force, the cause of which is the difference in air velocity and particle. Heavy particles mostly move (separated from the light ones) under the action of gravity, while the aerodynamic drag force acts slightly [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. The force of aerodynamic drag is determined by the expression: (1) where C D is the aerodynamic drag coeffi cient of the particle, ρ g is the air density, kg / m 3 (ρ = 1.225 kg / m 3 ); d р -particle diameter, m; U is the air fl ow speed created by the fan, m / s; V -particle velocity, m / s. (6) The aerodynamic drag coeffi cient of spherical particles C D is determined according to the Rayleigh curve depending on the Reynolds number Re (C D = f (Rе)) [1][2][3].…”

Section: Methodsmentioning

confidence: 99%

“…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]. Due to the imperfection of the design of the pneumatic system, there is an increased dustiness in the service areas and poor-quality separation of the grain pile by the air fl ow [10][11][12].…”

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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“…Seeds often fail to meet the qualitative criteria for processing in the food industry and are frequently disqualified. Therefore, seed cleaning methods are continuously optimized, and new equipment and devices that meet stringent industrial requirements and consumer expectations are being developed [1][2][3][4][5][6]. High qualitative standards are imposed not only on the principal cereal species, but also on buckwheat, which has emerged as an important source material for the production of gluten-free foods in recent years [7].…”

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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Substantiation of basic scheme of grain cleaning machine for preparation of agricultural crops seeds

Cited by 51 publications

References 5 publications

Improving the Mechanization of High-Quality Seed Production

Improving the Mechanization of High-Quality Seed Production

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

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