Design Of Air-assisted Boom Sprayer

Chemical insecticide is widely used to control various pests of crops and it is the most important measures to ensure agricultural productivity increasing. Its equipment is an indispensable tool to realize the target.The serious lag in plant protection machinery and agricultural chemeical application skills in our courntry has heniderd the effective control of crop pests ,and caused many negetive effects,such as low utilization rate of agricultural chemicals, excess pesticide residue,environmental pollution,pest- icide hadzard,operator toxicosis. All of these have resulted in many bonehead damages and other bad effects.Air-assisted spray technology as a plant protection machinery in the field of one of the latest anti-drift technique in recent years. It can effectively prevent small the droplet drift and enhance utilization of pesticides,reducing pesticide damage to the agricultural ecological environment. Achieve high efficiency, low pollution pesticide application technology, to improve agricultural ecological environment, improve the safety of agricultural products is important. But our research in this field there is a large gap between the developed countries. Therefore, using air-assisted spray studying a technology boom sprayer, for the improvement of the technological level of plant protection machinery, reducing the field of plant protection machinery in the gap with the developed far-reaching.The subject of using assistive technology airflow developed a set of spraying pesticides, herbicides, bio-regulators, mist and other multi-function environment-friendly air-assisted boom Sprayer. It has improvements on the basis of the original boom sprayer, the whole main chassis, transmission, spray liquid flow systems, hydraulic systems, air-assisted system, marking system. Completed by calculating the various components of the selection, including medicine cabinet, pump, nozzles, fuel tanks and so on. In order to improve operational efficiency, increase the spray bar rack automatic lifting and folding, and design a balanced body, can effectively reduce the spray process of the impact of uneven ground. Used in the design process to optimize the Cosmos works on the frame design, key components of the stress and deformation analysis, greatly reducing the design time and reduce costs. In order to prevent re-spray, spray leakage, also designed foam paddle device. It is by the compressor, foam boxes, infusion tube, gas pipelines. Control switch, foam nozzles and other components. In cab control, reducing pesticide use. In theoretical calculation based on the prototype finished with SolidWorks part drawings and three-dimensional mapping, and arranged for the performance of prototype testing, the export of wind speed on air bags, anti-floating effect of the prototype were studied.The experiment result show that the test balloon outlet velocity and the Department 40cm below the wind speed, the coefficient of variation are less than 10%, wind speed is good uniformity. By anti-drift performance test, the distance to the centre of the spray deposit (D_c) was used to evaluate the droplets drift .The distance character of droplet deposit and distribution was evaluated by using the index of D_c.Air-assisted spray technology can effectively reduce the droplet drift, get the second droplet atomization, droplet diameter are smaller. Air-assisted boom Sprayer uses air-assisted, hydraulic control, mechanical and electrical integration of advanced technology, simple structure, compact, efficient, provincial drug. Realized the spray bar and lift the automatic folding, greatly increased the level of automation. And designed bubble marked device, to prevent the re-spray and leak spray.