Improved design and test of horizontal organic fertilizer spreader
The solid organic fertilizer,which is often used as base fertilizer,is characterized by large application amounts,poor mobility,easy arching,etc.When fertilizer is applied by a horizontal organic fertilizer spreader,there are problems such as high power consumption of fertilizer delivery and poor uniformity of fertilizer application.In this paper,the design of the horizontal organic fertilizer spreader is improved by adding a spike-tooth fertilizer delivery crushing roller,a pressure-reducing baffle,and an impact guide plate at the fertilizer outlet to reduce the power consumption of fertilizer delivery and improve the uniformity of fertilizer application.The theoretical calculation and comparative analysis of the power consumption of fertilizer delivery before and after the improvement of the horizontal organic fertilizer spreader showed that the power consumption of the chain plate for fertilizer delivery before the improvement was 2.57×105 J,and the power consumption of fertilizer delivery after the improvement was 2.05×105 J,which could reduce the power consumption of fertilizer delivery by 20.23%.Using EDEM software,a single-factor test and response surface test was conducted and the test results were analyzed with the number of rows of fertilizer-crushing roller teeth,fertilizer-crushing roller speed,and fertilizer adjusting plate opening as the test factors and the coefficient of lateral variation of spreading uniformity as the evaluation index.Design-Expert 8.0.6 software was used to optimize the test results and verify the optimized parameters.The results showed that when the number of rows of teeth of the fertilizer delivery roller was 7,the speed of the fertilizer delivery roller was 147 r/min,and the opening of the fertilizer adjustment plate was 226 mm,the lateral variation coefficient of spreading uniformity was 14.04%,and the test results were basically consistent with the simulation results.The results of the study provide a reference for the optimization of the structure and performance of the horizontal organic fertilizer spreader.
fertilization machineryorganic fertilizercoefficient of variationspreading uniformity
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