THE DEPENDENCE OF THE EFFICIENCY OF THE GRAIN EXTRUDER ON THE PARAMETERS OF THE SCREW GROUP PARTS

These studies are aimed at substantiating and confirming the efficiency of the working process of a grain extruder when varying its operational parameters when working with a grain mixture supplemented, up to a third of the volume, with crop production and logging waste. Serial extruders are already configured to work with certain grain mixtures, and the addition of any other inclusions to their composition may lead to disruption of the workflow or damage to the screw group of the extruder. In order for the working process of the extruder to be reliable and economically profitable, it is sometimes necessary to constructively change some parts or assemblies of the screw group, which is the subject of this scientific study. The experiment used a feed grain mixture consisting of 85-87% of grain bulk, 10- 13% of sunflower harvest waste and up to 3% of fir needles saturated with vitamins. The results obtained allowed us to conclude that any crop production waste, if it was previously crushed, can be added to grain mixtures for extrusion. The capacity of the extruder and the reliability reserve of its screw group are sufficient for processing sunflower harvesting waste with the addition of Siberian fir needles