Design And Experiment Of A Swing Atomizing Soybean Coating Device

Soybean is the main food crop in China,and its planting area is increasing year by year.Soybeans will be harmed by underground diseases and insect pests after sowing,which has an important impact on soybean yield and quality.In order to improve the resistance of soybean seeds to diseases and insect pests,enhance the resistance to seedling stage,promote the healthy growth of soybean seedlings,and improve the yield and quality of soybeans,the soybean seeds need to be coated at the same time as they are selected and graded deal with.Soybean seed coating is a kind of machine that uses seed coating machinery to combine active ingredients such as pesticides,fungicides,fertilizers,growth regulators,antifreeze agents,water-retaining agents,oxygenating agents and some auxiliary materials.Regular seeds are coated into an orderly and layered manner to form a smooth and firm medical film.Soybean seeds are treated by coating,which can effectively to inhibit the pests from invading the seed and seedlings,ensure high germination rate,neat emergence,and strong disease resistance,thereby improving the quality of soybean seeds.The seed coating machine is an important platform to realize the seed coating technology.The quality of the seed coating machine will inevitably affect the healthy growth of the coated soybean seeds,thereby affecting the quality and quality of the soybean seeds.To this end,this paper designs a plate-spraying atomized soybean coating device,theoretical analysis of the plate-spraying atomized soybean coating device,using EDEM discrete element simulation software to coat the process was simulated and analyzed,and the three-factor quadratic regression orthogonal rotation center combination test was carried out by using a plate-spraying atomized soybean coating device.The main research contents and achievements are as follows.(1)The three-dimensional modeling software Solid Works is used to perform three-dimensional solid modeling on the plate-spray atomizing soybean coating device to determine the overall structure and basic parameters of the soybean coating machine.The soybean seeds in the mixing drum were analyzed theoretically,and the variation rules of the soybean seeds in the mixing drum of the plate-spraying atomized soybean coating device were obtained,and the structural parameters of the soybean coating device were designed.(2)Based on the discrete element method,the EDEM simulation software was used to simulate the influencing factors of the coating process of the plate-spraying atomized soybean coating device.Analysis of the movement state of soybean seeds in soybean coating device.Through single-factor simulation tests,the experimental factors were selected to obtain the baffle angle,the clearance between baffle and the wall,and the vertical position of the atomizing plate have a significant impact on the coating performance of the plate-spraying atomized soybean coating device,and determine the impact the best operating parameters of the soybean coating device are: the angle of the baffle is 45°,the clearance between the baffle and the wall is 15 mm,and the vertical position of the atomizing plate is 50 mm.(3)Taking the angle of the baffle,the clearance between the baffle and the wall surface and the vertical position of the atomizing plate as the test factors,and taking the soybean coating qualification rate and the coating breakage rate as the test indicators,single-factor and multi-factor test studies were conducted to affect the performance of the soybean coating.The structure and operation parameters of the experiment were tested.The primary and secondary factors of the influencing factors on the qualification rate of soybean coating were the clearance between the baffle and the wall surface,the vertical position of the atomizing plate,the angle of the baffle,and the primary and secondary factors on the breakage rate of the soybean coating The order is the vertical position of the atomizing plate,the clearance between the baffle and the wall,and the angle of the baffle.Using Design-Expert software to process and optimize the test data,under the conditions of the baffle angle of 45°,the clearance between baffle and wall of 17 mm,and the vertical position of atomizing plate of 53 mm,the soybean coating qualification rate is 95.9%,the breakage rate is 0.4%,and the verification test is carried out.The qualified rate of soybean coating is 96.2%,and the breakage rate is 0.38%.The verification results are basically consistent with the optimization results and meet the requirements of soybean seed coating.