Objective:In order to solve the existing online mixing device's singular pesticide mixing and low mixing efficiency.Methods:The design of multi-agent on-line mixing device was proposed,and the structure optimization was carried out on the typical structure of the mixer,and the CFD numerical simulation and experimental methods were used to analyze its jet flow field,so as to derive the optimal mixer structure.Results:Under different pasticide-water ratios,the maximum coefficient of variation of agent mixing was 8.23％and the average coefficient of variation was 5.23％in the test of mixing agents at the same dose,and the maximum coefficient of variation of agent mixing was 7.52％and the average coefficient of variation was 4.23％in the test of mixing agents at different doses.Conclusion:The maximum coefficient of variation and the average coefficient of variation of the mixed solution were kept at a low level and the mixing effect was good after the chemicals were mixed in the same proportion and in different proportions under different mixing ratios in the on-line mixing test of the new mixer.
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