Technological features of injection operation for trailer and self-propelled sprayers

Abstract

The article presents a technological and technical review of the elements of technical support of the spraying process. The analysis of types and technological features of spray nozzles of sprayers with the description of their technological purpose and features of work is presented. Some factors that contribute to the correct choice of spray nozzle are considered, namely: droplet size, spray quality, flow rate, spray torch and pressure. Emphasis is placed on assessing the impact of crop spraying using different types of nozzles. After all, nozzle nozzles differ not only in different shape and rate of pouring, but also have different sized holes for pouring drops of appropriate diameter and work with variable pressure to meet special requirements when applying materials. The point of application of liquids (leaves or stems) is also taken into account to ensure high accuracy and efficiency for this stage of growing crops. Nozzles for each type of application are considered: all-jet, 3D nozzles, high-flow nozzle, ultra-low wear nozzle, GuardianAIR Twin spray nozzles. Technological features of the following types of spray forms are described: paired type of spray form, conical type of spray form, form of spray type with change of direction (Deflect pattern), form of spray type with solid cone, form of spray type with empty cone, form of spray type with offset from the center, jet form of spray type. The classification for measurement and interpretation of spray quality from nozzles according to the ASABE S572.1 standard of the American Society of Agricultural and Biological Engineers (ASABE) is given.