| Plant protection has been the most important part of the production of cotton. Cotton production is a major constraint to pests and diseases. Main important means of controlling pests of cotton grass disease is still based mainly chemical control pesticide spraying. So the key is to ensure that the cotton plant protection and pest control normal growth of cotton. In recent years, China began to develop cotton production. Substantial increase in cotton acreage, cotton production increased steadily, but the disease is still rampant pests to cotton production caused significant damage, as a direct limit the further development of China’s cotton production the most important factor. Labor-intensive manual control, ineffective, and its efficiency is low. Therefore, a study of high efficiency, good spray effect, by high cotton field for cotton planting pattern of standardized operational requirements of the plant protection sprayer is important.The core working parts of this seeder are focus on study a plant protection operations applied to cotton fields bounded target axial flow air delivery device, according to the structural characteristics of axial flow air delivery system to determine the machine’s overall design. In order to improve the stability of the prototype by cotton fields to highland clearance rack as the bearer of universal institution. To achieve the target type of plant protection operations breeze through axial fans. The issue is the use of computer aids. Three-dimensional design and simulation components by Pro/E 5.0. Parts for institutional use finite element analysis ANASYS, and according to the design simulation results, optimize the structure parameters.2D assembly drawings and related parts diagram use of AutoCAD, CAXA and other mapping software to draw. Adopted on the basis of computational fluid dynamics CFD. In axial-flow air delivery target system, axial fan for airflow field parameters, flow and droplet mixed field against the natural anti-wind drift and other properties were simulated. Through the analysis of the simulation results for the target axial flow air delivery system to improve the uniformity of the optimization. M Prototype electric control system and hydraulic control system is designed. Ultimately, the prototype has been working prototype and performance testing. Further optimization of the prototype based on the measurement result.After the completion of the prototype process, it conducted performance tests. Experimental results show, When the breeze than the prototype has no time breeze Deposit and improved 23.75%,11.24% coefficient of variation decreased. The cotton leaf was attached to the front of the drug was 53.33% on average, the average liquid surface of leaf attachment rate of 41.67%. Prototype coverage above the required standard "NY/T 650-2013 sprayer (filter) the quality of work" in the average coverage of the liquid on the cotton leaves all levels of not less than 33%. Droplet penetration there when the wind sent no more than the number of droplets when the wind sent a 31.21% increase, reducing the coefficient of variation of 54.86%. There breeze droplet uniformity than those without DR breeze increased by 11%. Through different tests on prototype performance indicators studied. Optimizing the prototype structure parameters. This machine is applied for a job promotion in cotton crop protection provides a theoretical and practical basis. In the spraying process, achieve a precise spraying. Controlling droplet drift and improve the liquid deposition rate on crop. Reducing wastage and reduce pesticide pollution of soil and water bodies. |
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