Use of a Two-Disc Distributing and Two-Level Reflecting Devices of a Chamber Protector to Increase the Quality of Treatment of Seeds of Grain Crops
In recent years, increasing attention has been paid to quality seed treatment, which is impossible without the use of chamber dressers, working on the principle of continuous supply of seeds to the dressing chamber. Existing chamber dressers such as Mobiox Super in designs that provide for the installation of one or two disk seed dispensers for passive and active action, as well as single-level reflective devices, are not able to significantly improve the quality of dressing. Therefore, the purpose of scientific research was to improve the quality of seed treatment of grain crops by the development of a two-disk distributing and two-level reflecting devices of a chamber etcher. The scientific significance of research is to establish the dependencies of the influence of design parameters on the crushing of seeds. The practical significance of the research lies in the development of a seed dresser equipped with a two-disk distributing and two-level reflective seed devices capable of reducing crushing, seed moisture and increasing the completeness of their seed dressing. A two-disk distribution device consists of an upper annular disk with a divider guide in the form of a catenoid and a lower solid disk with a guide in the form of a pseudosphere, and a two-level reflecting device includes a reflector of the upper and lower levels, their application makes it possible to form two uniform flow of seeds before applying the working liquids. For research, seeds of spring wheat of the Rainbow variety were used as seed material, and Maxim Extreme was used as a dressing agent. The research methodology for the chamber dresser included substantiating the rational values of its design parameters, determining the sowing quality of the seeds, the effect of the diameter of the exit window of the petal dispenser on seed delivery, uneven feeding and crushing by the dresser, as well as comparative testing of the developed Mobiitox Super dresser with the base Mobiitox Super. Analysis and processing of research results was carried out by methods of mathematical statistics. The value of the research results is that when the distance from the annular disk to the reflector of the upper level is 60 mm, the diameter of the reflector of the lower level is 350 mm, the height of the reflector of the upper level is 30 mm, and the height of the reflector of the lower level is 30 mm, the smallest crushing of seeds was observed with the pickling agent 0, 05 %. The practical significance of the research lies in the development of a seed dresser that provides, in comparison with the base, a decrease in seed crushing after dressing from 0.12 % to 0.06 %, uneven dressing from 5.6 % to 2.67 %, seed moisture after dressing from 15, 4 % to 15.1 %, and an increase in the etch completeness from 85.6 % to 97.4 %. Thus, the use of a dresser equipped with a two-disk distributing and two-level reflecting devices can improve the quality of the pickling