PROSPECTS FOR INCREASING THE EFFICIENCY OF PNEUMATIC SEPARATION CHANNELS IN CLEANING GRAIN AND SEED MATERIALS
Keywords:
separation channel, cleaning, properties, grain, seeds, loading, channel width, efficiencyAbstract
The technological process of most universal grain and seed cleaning machines consists of the separation of
components by aerodynamic characteristics on the pneumatic separation channels and the separation of components
by size on the sieves. The restraining factor in further increasing the productivity of grain and seed cleaning
machines is the imperfect design of pneumatic separation channels. The analysis carried out made it possible to
determine the basic designs of pneumatic separating channels, their working elements and intensifying devices. This
allowed creating a classification of pneumatic separation channels according to various structural, technological and
functional features. The conducted system analysis established that one of the factors affecting the efficiency of
cleaning grain or seed materials is the uniformity of loading of the pneumatic separation channel along its width. To
determine the degree of significance of this factor, a research methodology has been developed. The description of
conducting experimental researches is given, mathematical expressions for determining the uniformity of the supply
of grain and seed materials are established. A list of design and technological parameters and properties of grain
(seed) mixtures, which affect the efficiency of pneumatic separation channels, is presented.
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