Universal grinder for agricultural production

Rapeseed as an important oilseed crop can be ground into alimentary flour which is used in animal feed or pressed in order to extract oil which is used in the preparation of many food products or in the production of biodiesel. The partial substitution of concentrated feed products with rapeseed flour up in the amount of 8-12% of the total weight in the diet of lactating cows increases milk productivity by 1.1-1.8 kg in terms of milk with 4% fat content. In order to reduce energy consumption during pressing as well as to reduce residual oil in press cakes, preliminary grinding of the seeds of oilseed crops is proposed. In this case, the effect of this feed additive is small in terms of animal productivity increase, since already during the extraction of oil from rapeseed seeds, containing 40-45% of the oil, most of the nutrients which are needed for faster productive development of animals are extracted together with the squeezed oil. Therefore, grinding of whole rapeseed seeds to produce rapeseed flour is proposed, despite their high oil content. However, mass-produced hammer grinders cannot cope with this task. A new device with curved cutting elements, which allows the grinding of seeds of oilseed crops and feed grains following the “chipping - cut” method, is proposed. The results of the experiments showed that this type of grinder is able to process rapeseed seeds with a fat content of up to 50% without the release of fat.