Development of short-range nozzle model for sprinkler machines

Abstract

Abstract The issue of land reclamation modern technologies and technical means development is considered in the article, in particular, the improvement of the structures of sprinkle-forming devices in order to increase their use efficiency, which is a priority direction of scientific and applied research. A short-range deflector nozzle of one-piece design sector action was developed, it includes a replaceable jet nozzle, due to which the pressure at the outlet increases, thereby creating a greater vacuum and better dispersion of the water-air mixture. The jet, upon reaching the vertical splitter of the flow part, is divided into two equal flows, the upper one - passes by the vertical part of the spreader and directed to the deflector central part, and the lower one, in turn, is divided into two more flows by the vertical part of the spreader and directed to the deflector edges. This technical solution allows to improve manufacturability and reduce the product cost, as well as to increase the uniformity of the spray, the range of sprinkle drops flow and the sprinkle gripping area, which provides fine-drop sprinkling, the average diameter of the drops is 0.5 … 0.7 mm, sprinkle drops from deflector nozzles flow range is 4 … 6 m/s. With such sprinkle, the energy impact on the soil and agricultural plants decreases, the bulk density in the upper soil layer and the mass of the sprayed soil decrease, which leads to the increase in crop yields by 6.0-20.0%.