JUSTIFICATION OF THE PARAMETERS AND MODES OF OPERATION OF THE FEEDER MIXER SHREDDER METHOD OF MODELING

The modeling of a technical system is one of the first stages of cognition of its properties with the aim of further improvement and proper use. Mixing of solid components with their simultaneous grinding by a vertical conical screw working body is a complex workflow, which the authors analytically described through the main parameters of the working body and the modes of the process. The obtained generalized factors, due to which the number of factors from seven decreased to four. This makes it possible to reduce the amount of experimental work by eight times and provide effective results that evaluate the actual action of the factors acting on the selected performance criterion, the coefficient of unevenness in a complex, rather than separately. The resulting model allows you to make a qualitative and quantitative assessment of the process of operation of the feeder-mixer-grinder, to optimize its parameters of the working bodies and modes of operation. It has been established that the coefficient of unevenness of the mixture depends proportionally (dependence 6) on the speed of the screw (ω) multiplied by the coefficient (c), which depends in turn on the volume of the bunker (V), the physicomechanical properties of the mixture, its bulk mass (ρ) , and the tangential shear force of the components of the mixture (τ) and the step of the screw (е), reduced to the value of the coefficient с₂, which depends on the design of the mixer hopper. In addition, the ratio of the coefficient of unevenness of the mixture (ν') is also proportional to the speed of circulation of components reduced in с₃ times, which depends on the design parameters of the machine, and the physical and mechanical properties of the mixture, the area of the side surface of the screw is reduced to с₄ times, which is alternating from the design parameters of the feeder-mixer-shredder. The results of the study are used when students study the courses “Machines and Equipment for Livestock”, “Operation of Technological Equipment for Livestock” and “Justification of Solutions”, and can also be the basis for further research, as well as in design practice