Experimental studies of the regular distribution of mineral fertilizers in the direction of their scattering

Abstract

Purpose. Increasing the efficiency of the technological process of introducing mineral fertilizers by centrifugal disc tukorozvny working bodies, the axes of which are installed obliquely.
Methods. In the process of experimental research, the basic provisions of GOST 20315-75 “Agricultural machinery. Method for determining test conditions”, GOST 28714-2007“ Machines for applying solid mineral fertilizers. Test methods ". The calculations were performed using the Microsoft Office Excel 2007 software environment. Results. The irregularity of the sowing of mineral fertilizers in the direction of their descent from the OET has the most significant effect on the rotational speed of the disk. The results obtained make it possible to select the optimal parameters and modes of operation of the OET in the variant of its placement on machines for applying fertilizers. Conclusions.
1. An increase in the rotational speed of the TON disk from 600 to 800 rpm leads to an increase in the effective sieving range of mineral fertilizers in the direction of their sieving at the level of 10.5 m. An increase in the disc inclination angle to the horizontal plane up to 20º leads to an increase in the effective sieving range of fertilizers by level of 48 deco (24 m) inclusive, as well as increasing the distance from OET to deco with the maximum proportion of the sown fertilizer mass (5.1%) to 24 deco (12 m).
2. With a constant rotational speed of the TON disk in all kinematic modes of its operation, an increase in the angle of installation of its disk in the horizontal plane leads to an increase in indicators characterizing the distribution of mineral fertilizers in deco in the direction of their sieving.
3. The sowing width of mineral fertilizers can be adjusted by the frequency of revolutions of the TON disc
when it is installed at an angle to the horizontal plane, similar to what is the case in modern machines for applying fertilizers when the disc of the centrifugal working body is horizontal.
4. An increase in the angle of inclination of the disc to the horizontal plane leads to an increase in the indicators characterizing the sieving range of mineral fertilizers and the working width of the machine for their introduction. In this case, the intensity of the increase in these indicators is the highest with an increase in the angle of inclination of the disc to the horizontal plane from 0 to 10 º and decreases as it further increases to 30 º.
5. The most significant influence on the coefficient of variation of the distribution of mineral fertilizers in the
direction of their sieving is exerted by the frequency of rotation of the OET disk.