Theoretical study of the working body of a centrifugal type mixing plant

Abstract

Relevance. The use of fertilizers in the agro-industrial complex is an important means to ensure sustainable development, food and environmental security. The scientific application of various types of fertilizers can reduce the negative impact on natural ecosystems, as well as optimize the use of resources and take into account the individual needs of each plant. Due to the balanced composition and biological modification by chelate complexes, fertilizer mixture has increased biological efficiency and stimulate plant growth. At the same time, there is an urgent task of obtaining mixtures that have a high degree of uniformity. In this connection, the requirements for the mixing equipment are very high, since the structural and kinematic parameters are the most important factors affecting the stability of the mixing process and the uniformity of the final mixture.Methods. Based on the analysis of existing mixing plants, the authors proposed the concept of a centrifugal type mixing plant with a working body in the form of a conical surface. In the course of the research, the processes occurring during the operation of the working body, the proposed centrifugal mixer, were studied using methods of mathematical analysis, graphical and mathematical modelling.Results. As a result of the research, it was found that the greatest influence on the change in the absolute velocity of the granules is exerted by the circumferential velocity of the granules, which is largely determined by the rotation frequency and parameters of the conical surface. In turn, it was found that over time, the angle between the direction of the absolute velocity of the fertilizer granules and the forming conical surface tends to the direction of the circumferential velocity, while with increasing rotation frequency, this indicator changes more rapidly.