Results of the Experimental Studies of Grain Cleaning with an Air-Spiral Separator

Shepelev, Sergey; Cheskidov, M. V.; Chumakov, Vladimir; Гриценко, А. В.; Shepeleva, Natalia

doi:10.1051/e3sconf/202021010002

Cited by 3 publications

(2 citation statements)

References 13 publications

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“…The emergence of new designs of pneumatic separators with a vertical channel and a lower zone for separating and unloading individual fractions [6,23,24] makes it possible to use the method of separating grain material components according to the divergence (branching) of their movement trajectories. This is a promising direction in the improvement of pneumatic separators with a vertical channel.…”

Section: Introductionmentioning

confidence: 99%

To the Theory of Grain Motion in an Uneven Air Flow in a Vertical Pneumatic Separation Channel with an Annular Cross Section

Stepanenko¹,

Kotov

Kuzmych³

et al. 2022

Processes

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The possibilities of the action of uneven air flows on the grain material in the separating channels are still not used enough. The reason for this is the insufficient knowledge of the processes of interaction of the components of the grain material with an uneven air flow. The purpose of the research is to increase the efficiency of grain material separation according to aerodynamic properties by purposefully changing the diagram of air velocities in the channel sections using the actions of lateral and aerodynamic forces. The separation efficiency of grain material components was determined by trajectory analysis. The different geometry of the pneumatic separation channel was studied. The study of the distribution of air velocity and air pressure vectors in a vertical annular channel was carried out using the FlowVision software. It has been established that a change in the air velocity diagram can be implemented both by changing the geometric parameters of the channel and by additional distributed air supply through the perforation in the side walls of the pneumatic channel. Based on the analysis of the velocity field, an improved scheme of a pneumatic gravitational separator is proposed for separating grain material into three fractions according to aerodynamic characteristics.

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Section: Introductionmentioning

confidence: 99%

To the Theory of Grain Motion in an Uneven Air Flow in a Vertical Pneumatic Separation Channel with an Annular Cross Section

Stepanenko¹,

Kotov

Kuzmych³

et al. 2022

Processes

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“…It has been established that the selection of seeds by density before sowing allows to increase the yield on average up to 25%. The pneumatic vibration method of seed density separation using pneumatic sorting tables is the most widely used (Bracacescu et al, 2018;Shepelev et al, 2020;Drincha, 2006). In developed grain-producing countries, pneumatic sorting tables are used mandatorily for obtaining highquality seeds (Straksas et al, 2016;Bulgakov et al, 2020), which cannot be obtained by other methods.…”

Section: Introductionmentioning

confidence: 99%

Theoretical Study of Vibrocentrifugal Separation of Grain Mixtures on a Sieveless Seed-cleaning Machine

Аdаmchuk¹,

Bulgakov

Gadzalo

et al. 2021

Rural Sustainability Research

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The article presents an analysis of known developments on creation of sieve-less pneumatic vibration centrifuges separating devices and processes of separating seed mixtures into fractions according to the complex of physical and mechanical properties of components. Mechanistic and mathematical models for studying the movement of particles over the sieve-free surface of pneumatic vibration separators were developed, theoretical studies of movement of seed mixture components were conducted and the most acceptable pneumatic vibration centrifugation process was determined by likeness to the process occurring on the separating surface of pneumatic sorting tables. To achieve the greatest separation of particles on the complex of their physical and mechanical properties (density, geometric dimensions, aerodynamic properties of seeds) is possible with the same direction of oscillatory motion and rotation of the separating surface performing the rotation in the direction from a larger radius to a smaller radius of the surface, in the “fluidization” mode, i. e. i.e. with periodic separation of the lower particles of the layer from the separating surface at simultaneous blowing of the layer by an air stream.

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Determining the Parameters of the Variable-Pitch Air-Screw Separator

Shepelev

Cheskidov

Chumakov

et al. 2023

XV International Scientific Conference “INTERAGROMASH 2022”

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Results of the Experimental Studies of Grain Cleaning with an Air-Spiral Separator

Cited by 3 publications

References 13 publications

To the Theory of Grain Motion in an Uneven Air Flow in a Vertical Pneumatic Separation Channel with an Annular Cross Section

To the Theory of Grain Motion in an Uneven Air Flow in a Vertical Pneumatic Separation Channel with an Annular Cross Section

Theoretical Study of Vibrocentrifugal Separation of Grain Mixtures on a Sieveless Seed-cleaning Machine

Determining the Parameters of the Variable-Pitch Air-Screw Separator

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