AERODINAMIC SEPARATION OF SINGLECOMPONENT SEED MIXES AFTER THE EXAMPLE OF CORN

Separation of seeds applies to the main technological processes of after- harvesting treatment. It is carried out for the purpose of cleaning sorting, calibration and enrichment of seed material. There are different methods of separation depending on state and purpose of seeds. The main method is sieving of seed mixes on the sieves of grainseparators in different regimes. Aerodynamic separation is carried out in air stream and used, as a rule, for the cleaning and dividing of light impurities. Lately it is created aerodynamic separators which are used not only for cleaning but also for sorting. However, it is unknown the influence of this method of separation on and seed quality of some fractions. The aim of this work was to determine the influence of aerodynamic separation in process sorting-calibration of single-component seed mixes. The researches were carried out after the example of such corn hybrids, for which sorting –calibration determines out-put and quality of production considerably. Hybrids of Institute selection – Ushitskey 167 SV, Pyatihatskey 270 SV, Borozenskey 277 MV, Soloninskey 298 SV, Zbruch were studied. For studying of quality the methods ДСТУ 4138 were used, and also methods, which were worked out in Institute for corn seeds. A single –component mix was got after cleaning of seeds in form a sawing group of triage and walk through the main sieve in depend on hybrids. It's established peculiarities of aerodynamic separation in process of seeds treatment, in which it was carried out cleaning and formed a sawing group. It was exposed instability of separation in connection with changing in air stream indexes of windage of seed mix in depend on its place and position, and also its speed and air density. In air stream seeds of hybrids were distributed by influence of their form, size, capacity, weight of 1000 seeds and at least of all - by specific surface and weight (capacity). In this connection, aerodynamic separation it is recommended to use on a primary stage for seed cleaning, and on a secondary stage – for sorting-calibration to use more deeper sieve and gravitational separation on appropriate machines .On the base of findings it was worked out variational curve of aerodynamic distribution of single-component seed mix