STATIC MIXER FOR GRAIN DRYING PROCESS CONTROL

The purpose of the study is to improve the technology of mixing grain samples using a patented manufactured static mixer. Tasks: to study the technology of grain mixing in a multi-stage static mixer; determine the uniformity and homogeneity of mixing. Materials are given based on the results of a study of the formation of average samples from a batch of grain that have undergone moisture removal on grain drying equipment to a moisture content of 14 %. Experimental studies on the formation of an average sample were carried out using new technological equipment, copyrights are protected by a utility model patent of the Russian Federation No. 202890 "Static laboratory mixer". The average sample was formed from 15 point samples taken from different places of the grain batch. Mixing grain from individual point samples was carried out by pouring grain into the mixer receiving hopper, from which, under the action of gravity, it then begins to move from top to bottom along the conical system of mixing elements placed in a cylindrical housing, on the central axis of which cone mixing elements are installed in series, each of which is made in the form of closed hemispheres mounted on stands mounted on cone tides, in which passage holes are made, to ensure the continuous movement of mixed seeds of grain crops. As a result of mixing on the developed mixer, 4 samples of medium samples were obtained, the content of which showed that the composition of the mixed samples contains the required amount of grains from point samples with a deviation: in 1 sample +1.2 %; in the second sample – 1.2; in the third sample – 0.6 and in the fourth sample +0.6 %, which corresponds to the standards of ±5 %.