Optimization and test study on parameters of helical axis based on EDEM solid-liquid separation device

• Published in: Shipin Yu Jixie Vol. 38; no. 7; pp. 128 - 132
• Main Authors: CHANG Jin-pan, GUO Lin, HE Xiao-mei, WANG Jian-kun, FANG Qi-ming
• Format: Journal Article
• Language: English
• Published: The Editorial Office of Food and Machinery 01.09.2022
• Subjects: edem simulation analysis; helical axis; kitchen waste; optimization design; solid-liquid separation device
• ISSN: 1003-5788
• DOI: 10.13652/j.spjx.1003.5788.2022.90129

Objective: To solve the problems of low dehydration rate of solid-liquid separation device and discharge not free of kitchen waste. Methods: By Optimizing the parameters of the key parts of the solid-liquid separation device, modeling the solid-liquid separation device based on Creo, analyzing the extrusion process through EDEM simulation software, the optimized screw shaft prototype was made and verified. Results: The optimized spiral shaft structure parameters were conveying distance 373 mm, compression distance 180 mm, compression end diameter 96 mm, spiral blade diameter 98 mm and axis length 553 mm; the force range of solid-liquid separation device was 2.7~4.5 N, wtih average force of 3 N, and discharge speed range of 1.3 ~ 4.7 m/s with average speed of 1.9 m/s. Conclusion: The dehydration rate of kitchen waste solid-liquid separation device is significantly improved, the discharge is smooth, and the dehydration effect is better than that before optimization.