Abstract
The article presents the results of research on a new design of a helicoid dispenser that allows to apply various types of mineral fertilizers in compliance with the requirements for uneven fertilizer application. The material for the study was ammonium nitrate and ammophoska. The dispenser consists of two cylinders with a helicoid surface located between them. The advantage of the design is that the helicoid shape of the dispenser eliminates the cramped state of fertilizer granules during their movement and provides the required application rate range. Studies have shown that with the maximum diameter of fertilizer granules dGmax = 6 mm, the number of entries of the helicoid surfaces will be equal to three, the inclination angle of the helical line of the coils n = 14 degrees. Based on analytical studies, the parameters and operating modes of the helicoid dispenser are substantiated, which allow reducing the unevenness of mineral fertilizers up to 3.4% and increasing the device productivity.
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