At present, the grain cleaning machines used for cleaning safflower seeds are not effective in cleaning safflower seeds due to the high energy consumption, metal and material content. For this reason, in Uzbekistan an energy and resource-saver grain cleaning machine has been developed which meets the needs of the farms in the cleaning of safflower seeds. When cleaning safflower seeds, the unfamiliar compounds in its content, including 2-3% light impurities should be separated. The quality of safflower seeds cleaning from light impurities depends on the number of fan rotations, the slope and height of the suction pipe and the quenching of the separated light impurities depend on the cyclone parameters. According to the theoretical and experimental studies, light compounds falling into a cyclone with a diameter of less than 20 m/km rise with air and fall with large ones. In addition, the rotation frequency of the fan in the grain cleaning machine is 2200 rpm (air flow rate 5.1 m/s), the height of the suction pipe is 70-130 mm and the slope is in the range of 20-40 degrees and the separation of light impurities of safflower seeds were achieved at around 85 percent.
In sunflower harvesting for decreasing the grain loss and increasing using efficiency of the combines GIS technologies, namely combines equipped with GPS devices and control sensors provides good results. This is explained that by the fact that with a length of 400-500 mm, the cut baskets did not partially fall on the divider-guide, and with a length of 700-800 mm, seed losses increased due to uncut baskets, since with an increase in length the divider-guide bent some stems forward and did not cut them. Analyzing the studies of working process of the adapted grain harvester combine Dominator-130 that equipped with GPS receiver and grain level indicator sensor in sunflower harvesting defined optimal parameters its header, as the following values: the length of the divider-guide (lТ) - 0.6 m, the gap between the divider-guides (ST) - 0.1 m, the installation angle of the divider-guide relative to the bottom of the header (βТ) - 5 degrees. With these parameters, the combine that has adapted header for harvesting sunflower meets the agro technical requirements for harvesting sunflower.
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