Theoretical study of the working body of a centrifugal type mixing plant

Relevance. The use of fertilizers in the agro-industrial complex is an important means to ensure sustainable development, food and environmental security. The scientific application of various types of fertilizers can reduce the negative impact on natural ecosystems, as well as optimize the use of resources and take into account the individual needs of each plant. Due to the balanced composition and biological modification by chelate complexes, fertilizer mixture has increased biological efficiency and stimulate plant growth. At the same time, there is an urgent task of obtaining mixtures that have a high degree of uniformity. In this connection, the requirements for the mixing equipment are very high, since the structural and kinematic parameters are the most important factors affecting the stability of the mixing process and the uniformity of the final mixture.

Methods. Based on the analysis of existing mixing plants, the authors proposed the concept of a centrifugal type mixing plant with a working body in the form of a conical surface. In the course of the research, the processes occurring during the operation of the working body, the proposed centrifugal mixer, were studied using methods of mathematical analysis, graphical and mathematical modelling.

Results. As a result of the research, it was found that the greatest influence on the change in the absolute velocity of the granules is exerted by the circumferential velocity of the granules, which is largely determined by the rotation frequency and parameters of the conical surface. In turn, it was found that over time, the angle between the direction of the absolute velocity of the fertilizer granules and the forming conical surface tends to the direction of the circumferential velocity, while with increasing rotation frequency, this indicator changes more rapidly.

1. Sychev V.G., Shafran S.A., Vinogradova S.B. Soil fertility in Russia and ways of its regulation. Agricultural Chemistry. 2020; (6): 3–13 (in Russian). https://doi.org/10.31857/S0002188120060125

2. Mitrofanov S.V., Orlova N.V., Blagov D.A., Panferov N.S., Teterin V.S. Analysis of trends in the development of fertilizer mixing equipment. Agrarian science. 2023; (6): 98–110 (in Russian). https://doi.org/10.32634/0869-8155-2023-371-6-98-110

3. Dorokhov A.S., Novikov N.N., Mitrofanov S.V. Intelligent fertilizer system technology. Machinery and Equipment for Rural Area. 2020; (7): 2–5 (in Russian). https://doi.org/10.33267/2072-9642-2020-7-2-5

4. Rychkov V.A., Katayev A.A., Smagin A.V. Preparation of fertilizer mixtures in the conditions of economies. Tekhnika v sel’skom khozyaystve. 2010; (1): 37–38 (in Russian). https://www.elibrary.ru/nordur

5. Lichman G.I., Marchenko N.M., Elizarov V.P., Marchenko A.N. Justification of parameters of machine technology of organo-bakterial fertilizers preparation. Agricultural Machinery and Technologies. 2016; (1): 43–48 (in Russian). https://elibrary.ru/vkzgyx

6. Longlong R., Zhang H., Zhang S., Fan G., Li Y., Song Y. Experimental research on efficient irrigation system with mixed fertilizer in integration of water and fertilizer. Journal of Physics: Conference Series. 2020; 1550(4): 042004. https://doi.org/10.1088/1742-6596/1550/4/042004

7. Nogalska A., Czapla J., Skwierawska M. The effect of multi-component fertilizers on spring triticale yield, the content and uptake of macronutrients. Journal of Elementology. 2012; 17(1): 95–104.

8. Belousov I.E., Kremzin N.M. Efficiency of polyelement fertilizer mixtures in rice growing. Achievements of science and technology in agribusiness. 2016; 30(8): 40–41 (in Russian). https://www.elibrary.ru/wjztnl

9. Gaibaryan M.A., Sidorkin V.I., Gapeeva N.N. Optimization of the structural design of the process of fertilizer mixing and biomodification of solid mineral fertilizers. Machinery and Equipment for Rural Area. 2021; (10): 17–22 (in Russian). https://doi.org/10.33267/2072-9642-2021-10-17-22

10. Frantskevich V.S., Vysotskaya N.A., Dvornik A.P. Granulation of complexmixed fertilizers in a drum granulator-dryer. Mechanics. Researches and Innovations. 2021; (14): 226–233 (in Russian). https://www.elibrary.ru/mnwokm

11. Kafarov V.V., Dorokhov I.N., Zhavoronkov N.M. System analysis of chemical technology processes: Processes of grinding and mixing of bulk materials: basics of strategy. Monograph. 2nd Ed. Moscow: Yurayt. 2018; 499 (in Russian). ISBN 978-5-534-06991-4 https://www.elibrary.ru/zcyhsc

12. Turkin V.N., Komyagin A.S. Optimization of the use of mineral and bilogized fertilizers using a new generation of tukosmesitelnye machines. Principles and technologies of greening production in agriculture, forestry and fisheries. Proceedings of the 68th International Scientific and Practical Conference dedicated to the Year of Ecology in Russia. Ryazan: Ryazan State Agrotechnological University named after P.A. Kostychev. 2017; 2: 350‒354 (in Russian). https://elibrary.ru/zgdrwl

13. Panferov N.S., Teterin V.S., Pekhnov S.A., Sukhorukov D.G. Development of a laboratory bench for the study of the working bodies of centrifugal fertilizer spreaders. Machinery and Equipment for Rural Area. 2020; (7): 26‒29 (in Russian). https://doi.org/10.33267/2072-9642-2020-7-26-29

14. Panferov N.S., Teterin V.S., Mitrofanov S.V., Blagov D.A., Pekhnov S.A., Sukhorukov D.G. Trends in the development of machines fitted with centrifugal working bodies for surface application of solid mineral fertilizers. Machinery and Equipment for Rural Area. 2021; (12): 18‒24 (in Russian). https://doi.org/10.33267/2072-9642-2021-12-18-24

15. Pavlov V.S., Smirnov A.G., Gordeev A.A. Corrosion resistance of construction materials in contact with complex fertilizers. Scientific, educational and applied aspects of the production and processing of agricultural products. Collection of materials of the V International Scientific and Practical Conference. Cheboksary: Chuvash State Agrarian University. 2021; 619–624 (in Russian). https://www.elibrary.ru/uaoufl

16. Mitrofanov S.V., Novikov N.N. Efficiency of using stimulating preparations in pre-treatment of spring barley seeds. Bulgarian Journal of Agricultural Science. 2020; 26(5): 958–965.

17. Novikov N.N., Rychkov V.A., Tihonova O.V., Aritkin A.G. On the preparation of modified mineral fertilizers in conditions of agricultural enterprises. Problemy mekhanizatsii agrokhimicheskogo obespecheniya sel’skogo khozyaystva. 2016; (10): 185–192 (in Russian). https://www.elibrary.ru/zfcllz

18. Konyaev E.R., Kostin Ya.V., Akulina I.A. Scientific bases of obtaining and applying biomodified mineral fertilizers. Theoretical and practical potential in agriculture, forestry and hospitality. Proceedings of the National Scientific and Practical Conference of students, undergraduates, postgraduates and young scientists. Ryazan: Ryazan State Agrotechnological University named after P.A. Kostychev. 2021; 69–72 (in Russian). https://www.elibrary.ru/myuuic