Technology, energy, agriculture transport AIC

Oleh SAHAN – Postgraduate Student of the Department of Machine design and automotive engineering, Lviv Polytechnic National University (12 Stepan Bandera Str., Lviv, Ukraine, 79013, e-mail: oleh.y.sahan@lpnu.ua, https://orcid.org/0009-0003-0952-0846).

In modern technological processes for processing bulk materials, multicomponent batchers and mixers play a significant role, providing accurate dosing and uniform mixing of components in a continuous mode. One of the most promising designs is centrifugal batchers, which are widely used in the food, chemical, pharmaceutical, and construction industries due to their compactness, reliability, and high performance. However, in order to ensure a stable and controlled supply of components, it is necessary to study in depth the relationship between the design and technological parameters of the dispenser. 
The study of the effect of the metering disk rotation speed, the angle of its conical surface and overpressure allows us to establish the patterns of particle movement, optimize the metering mode and ensure the stable quality of the finished mixture. The use of a three-factor experiment makes it possible to quantify the influence of these factors and build an empirical model of the dosing process, which will be the basis for further optimization of the design and operating modes
The aim of the study is to substantiate the influence of the main factors such as the rotational speed of the dosing disk, the angle of the conical disk's generating surface and the overpressure in the dosing zone on the uniformity of the mixture supply and the performance of a centrifugal dosing mixer.
Thus, the expediency of this study is due to the need to improve the efficiency of the dosing process in centrifugal multicomponent mixers, where the uniformity of component feeding and process stability largely depend on a rational combination of design and technological parameters. One of these little-studied but promising control factors is the overpressure in the dosing zone, which can significantly affect the movement of bulk particles, intensifying their movement along the disk.
In the context of this study, considering overpressure as the third factor in a three-factor experiment (along with rotational speed and cone angle) allows us to obtain a more complete picture of the physical processes occurring in the dosing zone. The analysis of the experimental results made it possible to establish that an increase in pressure within the optimal range contributes to a more uniform distribution of the material over the working surface of the disk, an increase in dosing accuracy, and an improvement in the overall performance of the metering and mixing device.

1.    Berthold, F., & Scherer, J. (2020). Design and performance evaluation of centrifugal feeders for powder dosing applications. Powder Technology, 366, 256–265. DOI: https://doi.org/10.1016/j.powtec.2020.02.013. [in English].
2.    Gupta, M., & Sharma, V. (2021). Advances in continuous powder mixing technologies for pharmaceutical manufacturing. International Journal of Pharmaceutics, 598, 120361. DOI: https://doi.org/10.1016/j.ijpharm.2021.120361. [in English].
3.    Zhang, L., Yan, C., Wu, Q., & Wang, T. (2019). Effect of pressurized feeding on powder flow and dosing performance in continuous processing. Chemical Engineering Research and Design, 147, 229–238. DOI: https://doi.org/10.1016/j.cherd.2019.05.020. [in English].
4.    Johanson, J.R. (2002). Particle segregation and what to do about it. Chemical Engineering Progress, 98(1), 43–50. [in English].
5.    Peleg, M. (2005). Flowability of food powders and methods for its evaluation – A review. Journal of Food Process Engineering, 1(1), 7–20. [in English].
6.    Osiptsov, A.A. (2017). Modeling of granular material flow on rotating surfaces. Powder Technology, 316, 456–468. DOI: https://doi.org/10.1016/j.powtec.2017.04.045. [in English].
7.    Berthold, F., & Scherer, J. (2020). Design and performance evaluation of centrifugal feeders for powder dosing applications. Powder Technology, 366, 256–265. DOI: https://doi.org/10.1016/j.powtec.2020.02.013. [in English].
8.    Madadelahi, M., Acosta-Soto, L. F., Hosseini, S., Martinez-Chapa, S. O., & Madou, M. J. (2020). Mathematical modeling and computational analysis of centrifugal microfluidic platforms: A review. Lab on a Chip, 20(7), 1318–1357. DOI: https://doi.org/10.1039/C9LC01088D. [in English].
9.    Khudher, A.Y., Himoud, M.S., & Almaliki, S.A. (2020). Modulating a centrifuge spreader disc and evaluating performance under some different operating factors. International Journal of Agricultural and Statistical Sciences, 16(1), 1799–1805. [in English].
10.    Marano, S., Barker, S. A., Raimi-Abraham, B. T., Missaghi, S., Rajabi-Siahboomi, A., & Craig, D. Q. M. (2016). Development of micro-fibrous solid dispersions of poorly water-soluble drugs in sucrose using temperature-controlled centrifugal spinning. European Journal of Pharmaceutics and Biopharmaceutics, 103, 84–94. DOI: https://doi.org/10.1016/j.ejpb.2016.03.010. [in English].
11.    Dmytriv, V., Bembenek, M., Banha, V., Dmytriv, I., Dzienniak, D., & Nurkusheva, S. (2024). Modeling of the efficiency of the centrifugal conical disk dispenser of bulk materials. Materials, 17(8), 1815. DOI: https://doi.org/10.3390/ma17081815. [in English].
12.    Chen, J.F., Rotter, J.M., Ooi, J.Y., & Zhong, Z. (2006). Correlation between flow pattern and wall pressures in a full-scale silo. Engineering Structures, 29(9), 2308–2320. DOI: https://doi.org/10.1016/j.engstruct.2006.01.012
13.    González-Montellano, C., Gallego, E., Ramírez-Gómez, Á., & Ayuga, F. (2012). Three-dimensional discrete element models for simulating the filling and emptying of silos: Analysis of numerical results. Computers & Chemical Engineering, 40, 22–32. DOI: https://doi.org/10.1016/j.compchemeng.2012.01.012. [in English].
14.    Zhang, L., Yan, C., Wu, Q., & Wang, T. (2019). Effect of pressurized feeding on powder flow and dosing performance in continuous processing. Chemical Engineering Research and Design, 147, 229–238. DOI: https://doi.org/10.1016/j.cherd.2019.05.020. [in English].
15.    Gupta, M., & Sharma, V. (2021). Advances in continuous powder mixing technologies for pharmaceutical manufacturing. International Journal of Pharmaceutics, 598, 120361. DOI: https://doi.org/10.1016/j.ijpharm.2021.120361. [in English].
16.    Dmytriv, V.T., Dmytriv, I.V., & Yatsunskyi, P.P. (2019). Research of the pneumatic-electromagnetic pulse collector of the milking apparatus by the method of planned experiment. Engineering of Environmental Management, 2(12), 66–72. [in Ukrainian].