The article examines the process of flattening a grain mixture of cereals and legumes. This is due to the need of ensuring a balanced diet for farm animals. The mixtures include various types of grain that complement each other in terms of missing elements, which increases digestibility and completeness of nutrient use. Also, grain mixtures can be enriched with additives such as vitamins, minerals and probiotics, which makes them more useful for animals. The most rational way to prepare the cereal mass for feeding is flattening, which allows you to destroy the structure of starch grains, providing direct access of digestive enzymes in the gastrointestinal tract to the nutrients of the cereal. A theoretical analysis was carried out, which showed the impossibility of flattening the grain mixture of cereals and legumes on existing flattener. Key parameters of the process of flattening grain mass with different grain mixture fractional structure were determined. Based on these parameters, a roller - tape flattener was designed to flatten grain mixtures with different size characteristics of the components. Theoretical analysis of the grain mixture flattening on the proposed roller - tape flattener was carried out. The flattening process analysis determined the forces acting on the lower run of the inclined conveyor. The grain weight pressure on the tape р (x) and forces from a tape (P1.1, P1.2, P1.3, P2.1, P2.2, P2.3... P1n, P2n, and PB) were expressed through a single force P. A connection was established between the force P of the conveyor belt, the pressure distribution of the grain mass p(x) and the value of its deformation Δh. Formulas were obtained to determine the pressure of the conveyor belt P, the deformation of the grain mass Δh and the pressure of the grain mass p(x).
grain mixture, grain flattening, gripping conditions, grain deformation, roll-belt flattening
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