EQUATIONS FOR CALCULATING TECHNOLOGICAL PARAMETERS OF PNEUMATIC SORTING MACHINES

Abstract

The purpose of separation of seed mixtures is the most complete separation of fractions according to the characteristics that ensure the required quality of the resulting final product with the least number of operations. These features are taken into account when creating schematic diagrams of grain-cleaning and sorting machines (separators). Presented the results of a study to determine the indicator for assessing the technological effect of separation by the example of separation of seed mixtures in the ascending air flow of pneumatic sorting machines. (Research purpose) The research purpose is developing a method for calculating the indicator for assessing the technological effect of separation on the separation of seed mixtures in the ascending air flow of pneumatic sorting machines. (Materials and methods) Conducted a study based on the logistician equation and methods of mathematical statistics. (Results and discussion) We considered the logistic equation (the Ferhulst equation by the name of the Belgian mathematician who first formulated it), which initially appeared when studying the population growth model. It was established that the result of measurements of the physico-mechanical properties of seeds (signs of separation) is expressed either in variational series or in variational curves that determine the frequency of a particular seed size of any aggregate. It was shown that from the comparison of these data obtained for each component separately, it is possible to identify which sizes of the main grain are the most different in comparison with those of the impurities. (Conclusions) We obtained a formula for evaluating the technological effect of separation by the example of separation of seed mixtures in the ascending air flow of pneumatic sorting machines, characterized in that it takes into account the soaring speed of the separated components as a sign of separation.