Analysis of Mixing Mechanism of Soybean Meal Combination Three-screw Flow Channel Based on CFX
In view of the shortcomings of the extrusion performance and mixing efficiency of the traditional three-screw extruder,in order to improve the quality of extrusion products,a new combined three-screw extruder is designed here.Using soybean meal as raw material,the CFX finite element simulation module is used to numerically simulate the combined three-screw flow channel with reverse thread,and the characteristics of the macroscopic pressure,velocity vector and velocity trace are compared with the traditional three-screw,and the motion law of soybean meal in the flow channel is summarized.The analysis results show that the appearance of vortex zones at-0.24 m,-0.22 m and-0.18 m in the flow channel changes the motion mode of the material,prolongs the extrusion time of the material,and improves the dispersion and mixing of the material.The research results show that the repeated periodic shearing and extrusion of the anti-thread triangular arrangement to the material can effectively improve the extrusion quality of the material,and the research results provide a certain theoretical basis for optimizing the processing of the three-screw extruder.
three-screw extrudercombined threadsSoybean mealcfxVortex zone
NETL
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