Improving the mechanical-mathematical model of pneumatic vibration centrifugal fractionation of grain materials based on their density
DOI:
https://doi.org/10.15587/1729-4061.2021.236938Keywords:
mechanical-mathematical model of separation, grain material, seed material, pneumatic vibratory centrifugal separatorAbstract
This paper has substantiated the mechanical-mathematical modeling of the process of fractionation of grain material into fractions. It has been established that this could optimize the process parameters and would make it possible to design new or improve existing working surfaces of centrifugal separators.
A mechanical-mathematical model of the pneumatic vibratory centrifugal separation of grain material by density has been improved. This research is based on the method of hydrodynamics of multiphase media. The improved mechanical-mathematical model takes into consideration the interaction between the discrete and continuous phases of grain material by introducing conditions of interaction at the interface of these phases. In the hydrodynamic modeling of the movement of the circular layer of seeds, the coefficient of dynamic viscosity of discrete and continuous phases was taken into consideration.
It was established that the pneumatic vibratory centrifugal separation process parameters are critically affected by the circular frequency of rotation of the cylindrical working surface, the frequency and amplitude of its oscillations. As well as such process characteristics as the airflow rate, dynamic viscosity coefficient, the average thickness of a grain material layer, and the mean density of its particles. Rational values for the technical parameters of the grain material pneumatic vibratory centrifugal fractionation process in terms of density have been determined by using the improved mechanical-mathematical model. The amplitude and oscillation frequency of the working surface are in the ranges A=(35…50)·10–5 m, ω=15.0...15.6 rad/s. The circular rotation frequency of the working surface, ω=24...25 rad/s. The airflow rate, V=2 m/s.
It was established that using the improved mechanical-mathematical model of fractionation makes it possible to improve the performance of a pneumatic vibratory centrifugal separator by 9 %. At the same time, the effectiveness of grain material separation could reach 100 %.
References
- Wang, P., Deng, X., Jiang, S. (2019). Global warming, grain production and its efficiency: Case study of major grain production region. Ecological Indicators, 105, 563–570. doi: https://doi.org/10.1016/j.ecolind.2018.05.022
- Stepanenko, S. P., Kotov, B. I. (2019). Theoretical research of separation process grain mixtures. Naukovij Žurnal «Tehnìka Ta Energetika», 10 (4), 137–143. doi: https://doi.org/10.31548/machenergy2019.04.137
- Qi, X., Li, J., Yuan, W., Wang, R. Y. (2021). Coordinating the food-energy-water nexus in grain production in the context of rural livelihood transitions and farmland resource constraints. Resources, Conservation and Recycling, 164, 105148. doi: https://doi.org/10.1016/j.resconrec.2020.105148
- Kumar, D., Kalita, P. (2017). Reducing Postharvest Losses during Storage of Grain Crops to Strengthen Food Security in Developing Countries. Foods, 6 (1), 8. doi: https://doi.org/10.3390/foods6010008
- Kharchenko, S., Borshch, Y., Kovalyshyn, S., Piven, M., Abduev, M., Miernik, A. et. al. (2021). Modeling of Aerodynamic Separation of Preliminarily Stratified Grain Mixture in Vertical Pneumatic Separation Duct. Applied Sciences, 11 (10), 4383. doi: https://doi.org/10.3390/app11104383
- Linenko, A., Aipov, R., Yarullin, R., Gabitov, I., Tuktarov, M., Mudarisov, S. et. al. (2018). Experimental vibro-centrifugal grain separator with linear asynchronous electric drive. Journal of Engineering and Applied Sciences, 13, 6551–6557. Available at: https://www.mendeley.com/catalogue/40e793af-2945-3942-a1cb-ce1f63899029/
- Ol’shanskii, V., Spol’nik, O., Slipchenko, M., Znaidiuk, V. (2019). Modeling the elastic impact of a body with a special point at its surface. Eastern-European Journal of Enterprise Technologies, 1 (7 (97)), 25–32. doi: https://doi.org/10.15587/1729-4061.2019.155854
- Wan, X., Liao, Y., Yuan, J., Wang, C., He, K., Liao, Q. (2020). Parameters Analysis and Experiment of Cyclone Separation Cleaning System with Replaceable Parts for Rapeseed Combine Harvester. Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery, 51 (s2), 202–211. doi: https://doi.org/10.6041/j.issn.1000-1298.2020.S2.024
- Ma, Q., Lu, A., Gao, L., Wang, Z., Tan, Z., Li, X. (2015). Aerodynamic characteristics of lotus seed mixtures and test on pneumatic separating device for lotus seed kernel and contaminants. Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering, 31 (6), 297–303. Available at: https://www.mendeley.com/catalogue/9b938f17-fcee-3484-9bc7-c5f3ad56499e/
- Badretdinov, I., Mudarisov, S., Tuktarov, M., Dick, E., Arslanbekova, S. (2019). Mathematical modeling of the grain material separation in the pneumatic system of the grain-cleaning machine. Journal of Applied Engineering Science, 17 (4), 529–534. doi: https://doi.org/10.5937/jaes17-22640
- Bulgakov, V., Nikolaenko, S., Holovach, I., Adamchuk, V., Kiurchev, S., Ivanovs, S., Olt, J. (2020). Theory of grain mixture particle motion during aspiration separation. Agronomy Research, 18 (1), 18–37. doi: https://doi.org/10.15159/ar.20.057
- Bredykhin, V., Gurskyi, P., Alfyorov, O., Bredykhina, K., Pak, A. (2021). Improving the mechanical-mathematical model of grain mass separation in a fluidized bed. Eastern-European Journal of Enterprise Technologies, 3 (1 (111), 79–86. doi: https://doi.org/10.15587/1729-4061.2021.232017
- Tishchenko, L., Kharchenko, S., Kharchenko, F., Bredykhin, V., Tsurkan, O. (2016). Identification of a mixture of grain particle velocity through the holes of the vibrating sieves grain separators. Eastern-European Journal of Enterprise Technologies, 2 (7 (80)), 63–69. doi: https://doi.org/10.15587/1729-4061.2016.65920
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2021 Vadym Bredykhin, Andrey Pak, Petro Gurskyi, Sergey Denisenko, Khrystyna Bredykhina
This work is licensed under a Creative Commons Attribution 4.0 International License.
The consolidation and conditions for the transfer of copyright (identification of authorship) is carried out in the License Agreement. In particular, the authors reserve the right to the authorship of their manuscript and transfer the first publication of this work to the journal under the terms of the Creative Commons CC BY license. At the same time, they have the right to conclude on their own additional agreements concerning the non-exclusive distribution of the work in the form in which it was published by this journal, but provided that the link to the first publication of the article in this journal is preserved.
A license agreement is a document in which the author warrants that he/she owns all copyright for the work (manuscript, article, etc.).
The authors, signing the License Agreement with TECHNOLOGY CENTER PC, have all rights to the further use of their work, provided that they link to our edition in which the work was published.
According to the terms of the License Agreement, the Publisher TECHNOLOGY CENTER PC does not take away your copyrights and receives permission from the authors to use and dissemination of the publication through the world's scientific resources (own electronic resources, scientometric databases, repositories, libraries, etc.).
In the absence of a signed License Agreement or in the absence of this agreement of identifiers allowing to identify the identity of the author, the editors have no right to work with the manuscript.
It is important to remember that there is another type of agreement between authors and publishers – when copyright is transferred from the authors to the publisher. In this case, the authors lose ownership of their work and may not use it in any way.
