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Full-Text Articles in Life Sciences
Effects Of Screw End Face Structural Parameters On Polylactic Acid Flow Field In Meshing Counter Rotating Twin Screw Extruder, Zhang Yi-Wei, Huang Zhi-Gang, Shang Jia-Wei, Liu Zhong-Yao, Yang Ya-Nan
Effects Of Screw End Face Structural Parameters On Polylactic Acid Flow Field In Meshing Counter Rotating Twin Screw Extruder, Zhang Yi-Wei, Huang Zhi-Gang, Shang Jia-Wei, Liu Zhong-Yao, Yang Ya-Nan
Food and Machinery
Objective: To investigate the effect of the screw configuration on the polylactic acid flow field on the structural parameters of the screw on the end face of the screw in the meshing counter rotating twin screw extruder. Methods: The theoretical model of the heterodirectional double-ended threaded element was established by Solidworks software and the geometry of the threaded element after adjusting the structural parameters in two different ways. The established three-dimensional model was imported into Gambit software for meshing, and then Polyflow software was applied to the flow field simulation calculation. Finally, the flow field distribution results were extracted by …
Motion Parameter Optimization Of Reciprocating Vibrating Screen Based On Discrete Element Method, Ren Ning, Wang Zhong-Ying, Bai Xiao-Li, Wu Wen-Bin
Motion Parameter Optimization Of Reciprocating Vibrating Screen Based On Discrete Element Method, Ren Ning, Wang Zhong-Ying, Bai Xiao-Li, Wu Wen-Bin
Food and Machinery
Objective: To determine the precise quantitative relationship between screening efficiency and motion parameters for reciprocating vibrating screen, and to obtain the movement parameters with the optimal screening efficiency. Methods: Rocky was adopted to accurately simulate the movement behavior for wheat grain and wheat stem in the screening process, many factors orthogonal simulation test was used to investigate the effect of vibration frequency, amplitude, vibrating direction angle and screen surface inclination angle on screening efficiency. Results: The movement behaviors of wheat in the screening process was consistent with the theory analysis, which verified the correctness and feasibility of numerical simulation using …
Study On The Applicability Of Two Numerical Models For Simulation Of Infrared Turbulent Spouted Bed
Study On The Applicability Of Two Numerical Models For Simulation Of Infrared Turbulent Spouted Bed
Food and Machinery
Objective： This study aimed to obtain suitable turbulence model for simulation infrared combined spouted bed numerical valued. Methods: Two equation models (SST k-ε and Realizable k-ε) were used for numerical simulation to obtain the performance parameters of the infrared spouted bed and the velocity, temperature and particle concentration distribution of the flow field in the drying chamber under different working conditions. The particle drying experiment of the infrared spouted bed was carried out. Results: When under the working conditions of air inlet velocity of infrared spouted bed drying chamber of 8 m/s and a temperature of 50 ℃, the values …
Effects Of Screw Arrangement In Four Screw Extruder Impact On Characteristics Of Polylactic Acid Flow Field, Shang Jia-Wei, Huang Zhi-Gang, Zhang Yi-Ming, Yang Ya-Nan, Dai Xiang-Ji
Effects Of Screw Arrangement In Four Screw Extruder Impact On Characteristics Of Polylactic Acid Flow Field, Shang Jia-Wei, Huang Zhi-Gang, Zhang Yi-Ming, Yang Ya-Nan, Dai Xiang-Ji
Food and Machinery
Objective: The flow channel distribution of polylactic acid in four screw extruder with different screw arrangement was studied. Methods: The three-dimensional modeling software Solidworks was used to establish the screw model and the corresponding fluid region model under the arrangement of one-word screw, four-square screw and encircle screw. Numerical simulation was carried out by the simulation software Polyflow. Results: The screw arrangement of monotype and surround type had better pressure building ability and distribution mixing ability than the square arrangement, and the square arrangement had weaker transport ability of polylactic acid. Conclusion: The four-screw extruder with one-line screw arrangement has …