Abstract:Grains of rye, wheat, barley and oats are often infected with poisonous ergot fungi. Therefore, it is necessary to clean the grain from harmful impurities. Modern machines do not provide the isolation of ergot sclerotia from grain due to the closeness of their properties in terms of air flow rate and linear dimensions. Cleaning seeds from ergot sclerotia, which have a density lower than the density of the grain, is possible in an aqueous solution of salt. When developing such a machine, research is required to… Show more
“…Screen shoes can differ in the number of installed sieves, number of tiers in a screen shoe, working surface area of a screen. The screens are installed with various types of holes: round, rectangular [1][2][3][4][5].…”
Screen shoes with three layout schemes of sieve arrangement were studied. There are separation and head screens installed in the upper tier in the first and third schemes, and in the lower one respectively there are two cleaning and two sorting screens, and in the latter between the tiers there is a rolling surface placed in the opposite direction of grain material movement. The second scheme involved the sequential installation of a sorting screen in the upper tier, and a cleaning and sorting screen in the lower tier. These schemes are used for preliminary, primary and secondary cleaning of grain material. The experimental studies made it possible to obtain the dependence graphs of the identified grain fractions on its supply to the beginning of the screen shoe, as well as the influence of grain supply on the quality indicators of winter wheat grain, such as the thousand-kernel weight of the main and forage fractions and the completeness of the fodder fraction extraction. The use of a screen shoe with a third layout scheme can provide seed cleaning with a supply of 0.38 kg/(s·m), commercial – with a supply of 1.05 kg/(s·m) and preliminary – with a supply of 3.94 kg/(s·m).
“…Screen shoes can differ in the number of installed sieves, number of tiers in a screen shoe, working surface area of a screen. The screens are installed with various types of holes: round, rectangular [1][2][3][4][5].…”
Screen shoes with three layout schemes of sieve arrangement were studied. There are separation and head screens installed in the upper tier in the first and third schemes, and in the lower one respectively there are two cleaning and two sorting screens, and in the latter between the tiers there is a rolling surface placed in the opposite direction of grain material movement. The second scheme involved the sequential installation of a sorting screen in the upper tier, and a cleaning and sorting screen in the lower tier. These schemes are used for preliminary, primary and secondary cleaning of grain material. The experimental studies made it possible to obtain the dependence graphs of the identified grain fractions on its supply to the beginning of the screen shoe, as well as the influence of grain supply on the quality indicators of winter wheat grain, such as the thousand-kernel weight of the main and forage fractions and the completeness of the fodder fraction extraction. The use of a screen shoe with a third layout scheme can provide seed cleaning with a supply of 0.38 kg/(s·m), commercial – with a supply of 1.05 kg/(s·m) and preliminary – with a supply of 3.94 kg/(s·m).
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.