Experiments And Research Of 3WF-8 Air-assistant Orchard Sprayer

As the strategy of the western regions developing is steadily pushed forward. It is a must for Xinjiang province where is one of the biggest base of growing trees and apples, and has a great progress at the aspect of growing trees and apples. At present, chymic prevention is still a method which is the best and the primary measure for human confronting plant diseases and insect pests. So, research and spread orchard sprayer has a significant meaning for promoting planting level of Xinjiang province with its growing trees and apples, increasing farmer's earning, improving chymic prevention effect, and boosting keeping developing with growing trees and apples industry. Therefore, it has necessity to research orchard sprayer, and it has an important reality meaning.This paper carry through simulating and testing for 3WF-8 air-assistant orchard sprayer. Combine with analyzing theory, simulating method, and testing research, and according to the results of simulating and testing dates, it find the relationship between structure parameter and trial index which can offer theory and testing dates for air-assistant orchard sprayer. In this passage, including as follows:1. By 3D machine assistance software, it help us complete design working of machine in a short time.2. With the analyzing of primary structure parameter, ascertain the model of uniformity experiment. Find the testing factor of uniformity experiment is: inlet wind speed, inlet diameter, and outlet magnitude.3. According to the simulating results, ascertain the order of influence to outlet wind speed: outlet magnitude>inlet wind speed>inlet diameter. Special parameters is: outlet magnitude equal to 50mm, inlet wind speed equal to 15m/s, inlet diameter equal to 750mm.4. Modeling the 3D of pattern machine, it is conclude that: at the top of sprayer, outlet wind speed is low, for this, put forward three hypothesizes: (1) Dynamotor's flux is not enough; (2) The position of oriented equipment is higher; (3) Dynamotor's current utilization is not sufficient.5. Simulating experiment conclude that the third hypothesis is primary factor for outlet wind speed. For this, designing a oriented equipment inside of sprayer. According to the results, it can find that: after appending the oriented equipment, left wind speed of sprayer is increasing 5% than before, and right increasing 1.5%. Last but not least, it testify that sprayer interior wind field have improve and optimizing.6. After checking-up the transmission shaft, conclude that: 30mm shaft can normally work at 1800r/min which also appending two load fan.7. By analyzing the sprayer, find orthoplan experiment factors are: spray pressure, rotate speed of fan, and spout diameter; Testing index are: level range, spray height, and fogdrop coherence. After appending the oriented equipment, set down uniform design, and its factors are: spray pressure, rotate speed of fan, spout diameter, and oriented equipment, testing index is fogdrop uniformity.8. By orthoplan experiment, ascertain the order of influence to performance of sprayer: A B C, spray pressure, speed of fan, and spout diameter, optimum combination is A₃B₁C₂. Meanwhile, realizing the fogdrop movement and fragmentation theory.9. By uniform design, find out the mathematic model between structure parameter and trial index. According to the equation, when the index reach to the max, primary structure parameters are: spray pressure 2.0MPa, speed of fan 1800r/min, spout diameter 0.8mm, oriented equipment existing. Finally, proving it has inosculation between testing outcome and regressive result.