Authors

Abstract

In order to explore the conveying mechanism of kneaded corn stalk in the screw conveyor and improve the conveying performance of the screw conveyor, the study of the screw conveying process of kneaded corn stalk was carried out, and the simulation model of the screw conveying process of kneaded corn stalk was established by using the discrete element method. The results showed that: The pitch, feed amount and screw shaft speed have significant effects on the productivity and power of screw conveying, and there are significant interactions. The optimal parameters of the multi-factor simulation optimization test were 319.428mm pitch, feed amount of 71.062kg/min, screwshaft speed of 117.034r/min, corresponding productivity of 71.517kg/min and power of 769.84W. This study reveals the screw conveying mechanism of kneaded corn stover, verifies the feasibility of using discrete element simulation to analyze the conveying process of kneaded corn stover, and provides a theoretical basis for improving and optimizing the screw conveying device.

Abstract in Chinese

为了探究揉碎玉米秸秆在螺旋输送机中的输送机理，提高螺旋输送机的输送性能，该研究揉碎玉米秸秆螺旋输送过程中的螺距、喂入量、螺旋轴转速进行单因素、多因素试验和离散元仿真。结果表明：螺距、喂入量、螺旋轴转速对螺旋输送的生产率和功率有显著影响，且存在显著的交互作用；多因素仿真寻优试验的最优参数结果为螺距319.428mm、喂入量71.062kg/min、螺旋轴转速117.034r/min，对应的生产率为71.517kg/min，功率为769.84W。该研究揭示了揉碎玉米秸秆的螺旋输送机理，验证了运用离散元仿真分析揉碎玉米秸秆输送过程的可行性，同时为改进和优化螺旋输送装置提供理论依据。