文章基本信息

标题：Идентификация скорости прохождения частиц зерновой смеси через отверстия решет вибрационных зерновых сепараторов
本地全文：下载
作者：Leonid Tishchenko ; Sergei Kharchenko ; Farida Kharchenko 等
期刊名称：Eastern-European Journal of Enterprise Technologies
印刷版ISSN：1729-3774
电子版ISSN：1729-4061
出版年度：2016
卷号：2
期号：7
页码：63-69
DOI：10.15587/1729-4061.2016.65920
语种：English
出版社：PC Technology Center
摘要：The research of the process of sieving of grain mixes in vibrating sieves of grain separators is given. The generalization of theoretical research allowed obtaining a mathematical model of grain mix dynamics in vibrating sieves, which is based on hydroanalogy and improved by the introduction of bubble fluidized medium. This model is the equation for determining the grain mix velocity components, taking into account the structural and kinematic parameters of sieves and properties of the mix. This identified the possibilities of intensifying the mix sieving in vibrating sieves through the use of epicycloid-shaped holes. The model is tested on the example of the pea mix sieving, resulting in the constructed velocity field and volume efficiency variation patterns in the series round-hole sieves and the developed five-petal epicycloid-shaped hole sieves. It was found that an important parameter in the dynamic processes and the grain mix sieving process is the velocity of its passage through the holes. To increase the modeling accuracy, the technique of identification that was to determine the flow rate of granular medium through the sieve holes was developed. The measurements of the velocity of the mix passage through the sieve holes were carried out. To do this, the flow of the sieved grain mix was determined and attributed to the area of the sieve holes. The load, structural and kinematic parameters of the sieve, including the type of holes was varied. The studies found a significant increase in the velocity of passage of the grain mix through epicycloid-shaped holes of the developed sieves in comparison with series round-hole sieves, which confirms their efficiency. Using these methods provides the real variation ranges of the velocity of passage of the grain mix of different crops through any type of sieve holes.
关键词：sieving process;efficiency;velocity field;holes;fluidized medium;pea mix;hydroanalogy