Study On The Technology Of Wind-driven Electrostatic Spray

The increase in agricultural output is inseparable from the advancement of pest control.However,the abuse of pesticides has caused problems such as soil and water pollution,and excessive pesticide residues in agricultural products.The main reason for these problems is the backwardness of the application technology,and the electrostatic spray technology is an internationally recognized application method that can improve the utilization rate of pesticides.This article is based on electrostatic spray technology,and the work is as follows:1.The air-driven electrostatic sprayer was researched,and the travel speed,hydraulic pump,medicine tank,nozzle type,drive shaft size,charging method,fan selection and electrostatic generator of the sprayer were selected.2.The working principle of the drug delivery pipeline of the air-assisted electrostatic sprayer was analyzed,and the drug delivery pipeline of the sprayer was designed according to the working principle,and different pipeline models were determined according to different working pressures.3.Three different structural forms of air ducts were designed by solidworks,and the flow velocity and pressure distribution of the three air ducts were analyzed through finite element software,and it was concluded that the tower air duct is more conducive to the wind transmission of the sprayer.4.The speed of the air outlet of the air-assisted electrostatic sprayer and the external watershed was tested by an anemometer,and it was concluded that the wind speed of the air outlet was not the same at all positions.The higher the fan speed,the greater the fluctuation of the wind speed at the air outlet of the fan Conclusion: As the fan speed increases,the wind speed at the air outlet at the same height increases;in the horizontal direction,the farther away from the sprayer air outlet,the lower the wind speed;the best spray distance for the sprayer is different,and the distance from the ground in the vertical direction is 0.5 m-2.5m is the best position for wind power,and1.2m-3.3m from the sprayer in the horizontal direction is the best position for wind power.5.Through orthogonal experiment of spray range,it is concluded that spray height is almost not affected by electrostatic voltage,spray pressure,and fan speed,which is caused by the setting of nozzle position.The horizontal range is obviously affected by electrostatic voltage,spray pressure,and fan speed.Therefore,the best solution should be determined based on the horizontal range,that is,when the fan speed is 1400r/min,the spray pressure is 1.0MPa,and the electrostatic voltage is 17 kV,the sprayer has the largest spray range.6.Through the sprayer adhesion rate test,it is concluded that the best solution for the adhesion rate of droplets on the front and back of the target is that the electrostatic voltage is 13 kV,the fan travel speed is 2 m/s,and the spray pressure is 1.5MPa.