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Analysis of the movement of cotton particles during interaction with improved grates

Field of Science:EngineeringIndustrial and Manufacturing Engineering
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O_TJ.2025.04.4_f11e8a6a.pdf

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“TEXTILE JOURNAL OF UZBEKISTAN” Scientific-technical journal

“TEXTILE JOURNAL OF UZBEKISTAN” Scientific-technical journal

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ARTICLE ANNOTATION

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The article presents a detailed mechanical analysis of the interaction between cotton particles and an improved grate system. The study was carried out using the law of conservation of momentum and the “normal–tangential” projection method. This approach enabled a more accurate description of the impact process and the calculation of motion parameters of cotton fibers and impurities after collision, using a mathematical model. In particular, the effect of the difference between the restitution coefficients e_p (for cotton) and e_i (for impurities) on exit velocities and deflection angles was identified. The calculations and graphical analysis showed that as the entry angle φ increases, the exit angles of cotton particles (θ_p) and impurities (θ_i) grow uniformly. The separation angle Δθ = θ_i − θ_p reaches its maximum magnitude at medium entry angles (around φ ≈ 30°), approximately |Δθ| ≈ 14°. Furthermore, variations in the grate spacing and drum rotation speed were found to increase the differences in the normal components of post-impact velocities, thereby expanding the possibilities of selective separation between cotton and impurities. The results obtained provide valuable practical recommendations. They allow optimization of the cleaning zone geometry and selection of rational operating modes. This serves as a theoretical basis for improving the efficiency of cotton cleaning and reducing energy consumption.

AUTHORS

I.Yangiboyev

TOSHKENT TO'QIMACHILIK VA YENGIL SANOAT INSTITUTI

Tags

# cleaning efficiency# cotton cleaning# bar grid# impact dynamics# separation angle# coefficient of restitution

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