Feruza Mukumova

This article is dedicated to substantiating the movement path of the semicylindrical mold in a device for preparing seedling planting cups. It emphasizes that modern agriculture cannot be imagined without mineral fertilizers, which play a crucial role in increasing crop yields. However, improper or excessive use of these fertilizers leads to various negative consequences, such as soil salinization and degradation. Excessive use of nitrates and phosphates disrupts the chemical balance of the soil, and prolonged application reduces the natural fertility of the soil. Insoluble compounds accumulate in the soil, causing phosphate fertilizers to react with iron, aluminum, or calcium, making phosphorus unavailable for plant uptake. To address these undesirable effects positively, the theoretical analysis results of a device for preparing seedling trays using biohydrohumus are presented. In addition, theoretical studies have determined that the surface area of the groove where the biohumus falls into the compression cylinder is S = 96 sm2; the installation angle of the loading container on the compression cylinder, calculated according to the expression, is α = 420; the pushing path of the biohumus is ls =9 sm; the length of the protective plug is lx = 23 sm, the length of the compression cylinder is lu = 56 sm; the inner diameter of the semicylindrical molds is Qd = 10 sm; the opening gap of the semicylindrical molds is LQ =16 sm; the installation spacing of the driving pneumatic cylinders of the semicylindrical molds is Lo = 36 sm; and the working surface area of the compression cylinder in friction with the biohumus is Ss = 628 sm2

This paper examines the working chamber of a crusher with a horizontal rotor arrangement, on which there are rectangular cross-section grooves used to move and crush grain material; for the same purpose, there are grooves on the upper disk. To study the movement of a grain particle along a lateral face and along a groove, differential equations were compiled. After the corresponding statements on these equations, the corresponding systems of equations were obtained. For the numerical and graphical implementation of the system of equations, the corresponding machine programs were compiled in the system "matlab". The prepared programs allow for the study of particle movement along the side surface and bottom of the rotor groove in numerical and graphical forms.