Justification of the parameters of the pressing-forming block of the press for obtaining root crops-grain granules
Volume 17 • Issue 3
Burmaga Andrei V., Chubenko Aleksandr V., Samuilo Viktor V., Kurkov Yurii B., Vinokurov Sergei A.
DOI: https://doi.org/10.22450/19996837_2023_3_77
Published on: 07.09.2023
Based on the previously conducted analysis of the structural and technological schemes of presses for obtaining a feed products, a structural and functional scheme of a press for obtaining granular-briquetted mixtures based on root-grain compositions has been developed. Earlier studies have made it possible to determine the dimensional characteristics, as well as the physical and mechanical properties and indicators of the initial grain and root-tuberous raw materials. It is established that the determining factors on which the final quality of the resulting product (granules, briquettes) depends are the parameters of the operation of the final element – the pressing-forming block of the press. The factors that have the greatest influence on the process under the study are identified, and the levels of their variation for the implementation of the proposed experiment planning matrix are determined. As a result of experimental studies consisting of 15 experiments, regression analysis was carried out and the values of standard deviation, correlation and determination coefficients were obtained, the F-criterion was determined and its significance values. Based on the mathematical processing of experimental data, mathematical models were obtained that adequately described the nature of the process of preparing a homogenized-molded mixture at the final stage – in the pressing-forming block. The reliability of the models was assessed by the significance level of the Fisher criterion, which was less than 0.05, which confirmed the significance of the models obtained. Mathematical processing of the obtained models revealed areas of extreme values of factors: the angular velocity of the knife, the length of the channel and the thickness of the briquette wall; at which the accepted optimization criteria (uniformity, strength of granules and energy intensity) tend to the established optimal value. A graphical interpretation of the obtained dependencies in the form of surfaces and their sections is carried out, which allows us to visually assess how the change of each factor affects the accepted optimization criterion when working with the pressing-forming block of the press.
Burmaga A. V., Chubenko A. V., Samuilo V. V., Kurkov Yu. B., Vinokurov S. A. Obosnovanie parametrov pressuyushche-formuyushchego bloka pressa dlya polucheniya korneplodno-zernovykh granul [Justification of the parameters of the pressing-forming block of the press for obtaining
root crops-grain granules]. Dal’nevostochnyj agrarnyj vestnik. – Far Eastern Agrarian Bulletin.
2023; 17; 3: 77–87. (in Russ.). doi: 10.22450/19996837_2023_3_77.
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