Substantiation of the Parameters for the Grinder of Mineral Fertilizers in the Chisel­Cultivator Hopper

Abstract

The problem of increasing the irrigated lands productivity and ensuring sufficient reserves of minerals and nutrients for plants is noted to be important in the Republic of Uzbekistan. In practice, when preparing land for sowing cotton, wheat, soybeans and other crops, the application of mineral fertilizers is provided with the help of a chisel cultivator that has two separate hoppers for mineral fertilizers with a capacity of 50 kilograms each. It was revealed that large lumps of caked fertilizers remain in the hoppers, which reduces the productivity and quality of the unit. It was recommended to use an improved device with one container and special grinders for mineral fertilizers installed there.Research purpose To substantiate the parameters for the grinder of large lumps of mineral fertilizers in the chisel-cultivator hopper.Materials and methods The study was focused on the parameters and performance of a mineral fertilizer grinder operating by means of a rotation provided by the unit support wheel.Results and discussion The parameters of the chisel-cultivator were determined for grinding and applying mineral fertilizers at the stage of preparing the soil for sowing.Conclusions A unit with grinding working bodies was developed to install in a chisel-cultivator hopper. The following parameters were specified: the shaft diameter is 40 millimeters, the toothed bar height is 25-30 millimeters, the width is 8–10 millimeters, and the thickness is 2-3 millimeters. In total, 18 bars were fixed in one compartment of the hopper, and 180 pieces in 10 compartments. The selected parameters of the mineral fertilizer grinder in the hopper with a capacity of 350 kilograms facilitate the application of up to 300 kilograms per hectare.