Simulation And Implementation Of Variable Injection Range Of The Spraying Device

Pesticide is a general designation of the various medicaments which are used to control insect and to eliminate weeds. From the large use of pesticide to control pest to today ,the contribution of the use of pesticide for human and social is known all over the world. In agriculture production, the effective use of pesticide not only increases grain production but also reduces the labor intensity; in the non-agricultural production, pesticide has played a significant role. There are many problems in pesticide applications. It makes large quantities of pesticide is lost into non-target environment. This not only wastes pesticide, but also pollutes environment. To solve these problems is to reform and reconstruct spraying facilities based on precision pesticide application techniques.The variable spraying-area of the spraying device is fabricated based on the above principle and under the Chongqing key Scientific and Technological projects: Research of Low-energy of Irrigation emote Control System based on solar energy. This device is driven by the stepper motor, and achieves precision-area and target spraying by adjusting the depth of swirl chamber to change the spray angle according to the scope of plantThe idea for designing the spraying device comes from the adjustable nozzle. So that the factors of spraying angle are analyzed theoretically firstly in this paper: The factors are the structure of the nozzle under ideal circumstances. Secondly, which a numerical simulationis carried out for the flow in nozzle by FLUENT soft is to research the relation of spraying angle and the structure of the nozzle, to optimize the structure of the nozzle, to fabricatespraying device, and to find the functional relation of the depth of swirl chamber and the s praying angle to control the spraying device : L = f(θ) .Finally, variable spraying-area of thefunction of the spraying device is testified through the self-made experimentIn addition, the process and the method of simulation by FLUENT software and the design process of the spraying device are introduced in detail.The experimental results show that the spraying device changes the spraying area in certain range.