Regression Dependence of the Influence of the Installation Angles of Drum Mixer Blades on the Quality of Mixture

Abstract

Abstract The aim of the research was to establish a regression model of the influence of the angles of installation of the wings of the L-shaped blades and to optimize their values. The methodology of the studies provided for the experimental determination of the coefficient of variation of the mixture with subsequent computer processing of the results, establishing the functional dependence of the quality of the mixture on the angles of the wings of the blades, finding the minimum values. The research technique implemented in this work allowed us to determine an adequate functional dependence of the quality of the mixture on the angles of installation of the wings of the blades. The optimum quality of the mixture of 20% for the share of the control component of 1% and the mixing time equal to 200 sec corresponded to the angles of the wings of the L-shaped blades: the lower part - 45 degrees and the upper part - 25 degrees between the direction of the wing of the blade and tangent to the circumference of the drum at the installation site of the wing of the blade (its closest point to the axis of attachment of the drum) in the range of angles was, respectively: 30-55 degrees and 0-45 degrees. Deviation of the indicated angles (except for increasing the installation angle of the lower wing of the blade) affects the quality of the mixture. In this direction, the stabilization of the coefficient of variation was observed.