Ways of Increasing Performance of Universal Grain Cleaning Machines

Giyevskiy, A M; Gulevskiy, Vyacheslav; OROBINSKIY, VLADIMIR I.

doi:10.26897/1728-7936-2018-3-12-16

Cited by 8 publications

(7 citation statements)

References 1 publication

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“…. (11) Then the speed of the cylindrical grain when moving along the surface of the bottom perpendicular to the axis from the expression (11) is determined:…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, to obtain grain suitable for food, technical and seed purposes, it is necessary to clean the grain heap, the task of which is to isolate all impurities, especially toxic ergot. The use of various and rather sophisticated grain cleaning machines does not give positive results when cleaning grain from these impurities due to the proximity of their physical and mechanical properties in terms of speed in the air flow and linear dimensions (width, thickness and length) [9][10][11][12][13][14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

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Influence of the angle of the bath bottom inclination in ergot isolation device on grain immersion in a liquid

2020

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For the mechanization of the allocation of toxic ergot from the rye seeds in a wet way, the urgent issue is the development of a device containing a bath with an aqueous solution of salt. The aim of the study is to determine the influence of the angle of inclination of the bottom of the bath on the rate of immersion of grains in the fluid of the device for separating ergot from rye seeds, which will ensure the efficiency of the process. Theoretically, we consider the movement of individual rye grains along the inclined surface of the bottom of the bath of the ergot extraction device. Rye grains have a density ρz = (1.2...1.5)·103 kg/m3, a length lz = (5.0. 10.0)·10-3 m, a width b = (1.4...3.6)·10-3 m, and a thickness δ = (1.2 3.5)·10-3 m. Geometric models of these grains are presented in the form of cylindrical and spheroidal grains. The movement of grain on the surface of the bottom of the bath of an ergot extraction device is considered at angles of inclination α = 27, 30, 40, 50, 60, 70, 80, and 90 degrees by the methods of mathematical modeling, classical mechanics using the laws of hydrodynamics. It was established that the angle α of the slope of the surface of the bottom of the bathtub to the horizontal should be taken at least 650, at which accumulation is excluded due to the rapid rolling of the grain and a decrease in the thickness of its layer.

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“…. (11) Then the speed of the cylindrical grain when moving along the surface of the bottom perpendicular to the axis from the expression (11) is determined:…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of the angle of the bath bottom inclination in ergot isolation device on grain immersion in a liquid

2020

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“…Therefore, the existing grain cleaning machines, pneumosorting tables, and color separators do not provide complete separation of toxic ergot sclerotia in one technological process. In addition, further research by scientists to improve the technological process of these rye grain cleaning devices does not solve the noted problem [15][16][17][18][19][20][21][22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Immersion of grains in a liquid along an inclined plane

et al. 2021

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Grain material delivered from combine harvesters to post-harvest processing points is a mixture of grain, weed and harmful impurities. Toxic ergot sclerotia are among the harmful impurities. Modern grain cleaning machines do not provide the separation of toxic ergot from grain material in one technological process. This is due to the closeness of the most toxic of ergot sclerotia and the of the grain. Ergot sclerotia are less dense than grain. Then the release of ergot from grain in one technological process is possible in an aqueous solution of salt. To develop a device for cleaning grain material by density in a liquid, practical experiments were carried out to supply grains of winter rye varieties Falenskaya 4 with a moisture content of 14% to an inclined plate placed in water. This plate mimicked the sloping bottom of an ergot seed separator. The statistical results of the experiments are presented by the distributions of the proportion of immersion of winter rye grains in water (ρzh = 1000 kg/m3) over the surface of the inclined plate from the angle α of its inclination to the horizon. It has been established that 100% immersion of the grains in water occurs at an angle of inclination of the plate of 60°. When developing a machine for the extraction of ergot from rye grain, the angle of inclination of the bath bottom must be taken at least 65° to the horizon for guaranteed immersion of grains in an aqueous solution of salt.

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“…These machines are complex and therefore costly. These machines do not provide the release of poisonous ergot sclerotia in one technological process due to the closeness of their physical and mechanical properties in terms of air flow velocity and linear dimensions (width, thickness and length) [13][14][15][16][17][18][19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Parameters of the seed output device of the ergot isolation machine

2021

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Grains of rye, wheat, barley and oats are often infected with poisonous ergot fungi. Therefore, it is necessary to clean the grain from harmful impurities. Modern machines do not provide the isolation of ergot sclerotia from grain due to the closeness of their properties in terms of air flow rate and linear dimensions. Cleaning seeds from ergot sclerotia, which have a density lower than the density of the grain, is possible in an aqueous solution of salt. When developing such a machine, research is required to study the residence time of grain in an aqueous salt solution. Grains are considered in the form of a transverse cylinder and an elongated ellipsoid of rotation with numerical values of the parameters: density ρz = 1.2…1.5∙103 kg/m3, length lz = 5.0…10.0∙10-3 m, width b = 1.4…3.6∙10-3 m and thickness δ = 1.2…3.5∙10-3 m. Theoretical studies were carried out on the basis of methods of mathematical modeling, classical mechanics using the laws of hydrodynamics. It was found that when using in the machine for the isolation of toxic ergot sclerotia from the grain of an aqueous solution of salt with a density ρzh = 1000…1150 kg/m3 and a height h1 = 0.35…0.60 m in a bath, the total time ttotal of seeds residence varies within 7.6…18.8 s. During this time, the seeds are moistened superficially, to eliminate which it is enough to blow them under the pressure of atmospheric air.

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Ways of Increasing Performance of Universal Grain Cleaning Machines

Cited by 8 publications

References 1 publication

Influence of the angle of the bath bottom inclination in ergot isolation device on grain immersion in a liquid

Influence of the angle of the bath bottom inclination in ergot isolation device on grain immersion in a liquid

Immersion of grains in a liquid along an inclined plane

Parameters of the seed output device of the ergot isolation machine

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