Study On Drug Mechanism And Control System In Mixed Orchard Sprayer

In recent years, the rapid development of China’s apple industry, and its acreage andproduction has leapt to the forefront of the world. But most of our orchard sprayer sprayingusing premixed drugs work by way of this mixed approach is not only harmful to humanmedicine, mechanical parts, such as harmful to the environment, but also the distribution ofliquid concentration and uniformity of the spray may also reach requirements, will producestratification, precipitation problems affecting the spray effect. In order to avoid directcontact between the operator and pesticides, reduce the operator’s labor intensity andreduce harmful levels of pesticides on the environment and reduce waste pesticides, designa mixed orchard sprayer drug control system.Firstly mechanism of the drug are mixed, prepared by the method of pesticide analysisto determine the mixing ratio of the concentration of the drug is less than100times.Existing wind sent orchard sprayer spraying amount is generally lower than30L/min,sureto select the pump specifications for30L/min, electromagnetic metering pumpspecifications for50ml/min.Theoretical study of the drug’s jet mixing,and built jet mixing the drug’s performanceparameters of the equation, and use Fluent on nine kinds of mixed doser model simulation,the volume of pesticides derived its contours; through comparative analysis of nine kindsof mixed pesticide volume doser model contours to determine the drug’s reasonable mixingstructure size.Building a core set of PLC control, touch screen as the user interface, flow sensors,pressure sensors, proximity switches and other detection devices as input, inverter, waterpump and solenoid metering pump as the output component mixing drugs orchard sprayercontrol system. In the spray process, when mixed with water, pesticides drug ratio changes,mixing the drug control system can automatically adjust the flow rate of pesticides andwater, so mixing the drug remained stable; in order to better address the orchard sprayingunit area of not uniform issue, mixed drug control system uses proximity switch detects thespeed of the unit when the unit rate changes, the control system corresponding changepump speed to ensure constant application rate units.To make it more convenient to mix drugs and simplification, the choice EView seriesMT506T touch screen as mixed drug control system interactive interface, and designedtouch-screen interface, including boot interface, parameter setting interface and real-timemonitoring interface, this can allows the operator to perform better mix drug operations.