Analysis of theoretical research of the process of extrusion of vegetable materials

Annotation Purpose. To analyze theoretical research of domestic and foreign scientists on extrusion of plant materials to identify areas for improving the quality of the process. Methods. Methods of mathematical description and solution of models of functioning of machines and mechanisms by branches on the basis of theoretical mechanics, higher mathematics, analysis and synthesis are used. Results. According to the results of the analysis, ways to improve the technology of extrusion of vegetable raw materials by moving to less energy-dependent methods with improved quality of raw materials. Conclusions. The analysis of the studied works showed that from the point of view of rheology, the process of compound feed production in the extruder is little studied; the main works are performed in the field of extrusion of plastics and metals. The result of the analysis showed that all extruders for plastics operate at high temperatures (from 120 to 200 Celsius degrees). Such temperatures for the production of compound feeds have a high energy consumption, which allowed directing the research towards less energy-saturated technical means in extruding technologies. Theoretical research and experimental verification of the proposed technological solutions are planned in the near future. Keywords: extruder, screw, feed pressing, mathematical model.