Development And Application Of Multifunctional Automation Fertilizer Integrated Machine Tool

The rapid development of science and technology has accelerated agricultural modernization.Traditional hand-held spraying and irrigation equipment are prone to serious waste of water resources,pesticides attached to the body,and low efficiency during operation.At present,sprinkler irrigation operations in greenhouses and seedbeds are mainly based on manual spraying,with low efficiency.Moreover,the existing rail-type sprinkler irrigation equipment in the greenhouse can only perform the walking sprinkler operation through the fixed double rail or the monorail,which has great limitations.Combining the experience and deficiencies of sprinkler irrigation machines at home and abroad,this paper conducts in-depth research on a variety of agricultural base environment sprinkler irrigation equipment,and designs a multi-functional fertilizer and water integrated equipment.The research content of this paper is divided into five parts:The first part:Firstly,introducing the background,function,demand and correlation analysis of the three models of this design.Then the mechanical structure of the greenhouse self-propelled sprayer is designed,focusing on the force analysis of the two drive shafts and the rational selection of materials.The second part:starting with designing the structure of the walking type seedbed sprinkler,roughly calculating the pipe force and flow of the inlet pipe,using the control principle of time relay to complete the design of the electronic control system and the prototype production;and last a spray deposition comparison test was done using the prototype spray irrigation and manual drip irrigation and then drawing conclusions,which provides a reference for the design of the following portable free-flowing sprinklers.The third part:designing the mechanical structure part of the portable free-flowing sprinkler;focusing on the design of the piping system,calculating the total head loss in the water flow output process,and completing the core component selection of the pipeline and sprinkler system,developing the prototype and then describing the working process and principle.The fourth part:Considering the light free walking type sprinkler as a single load suspension model for physical modeling,and performing force analysis in the modeling process to obtain the load deflection formula.Balance analysis of the model is carried out to calculate the tension of the two steel ropes and the required weight of the two ends.The Siemens S7-200PLC is used as the controller to complete the control system design;the SCSS color sensor is used to realize the water saving recognition function.The fifth part:the nozzle free performance test,comprehensive performance test,and spray uniformity influence factor test are carried on the portable free-style sprinkler.Focus on the verification test of the factors affecting the spray uniformity,calculating the regression equation of the uniformity coefficient of the spray amount distribution,and summarizing the variation law of the uniformity coefficient of the spray amount.The results show that the factor that affects the maximum uniformity is the height of the nozzle,and the optimal value of nozzle spacing,height and pressure is obtained through analysis.