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| Working condition analysis and parameter optimization of single stage screw press based on EDEM |
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| DOI： |
| KeyWord:screw press worm pressure ring EDEM discrete element simulation |
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| Abstract: |
| In order to improve the daily processing capacity of the screw press, EDEM software was used to simulate the working process of the transmission extrusion section of 6YL-76 single stage screw press. The mixing and stirring effect of the particles was characterized by the fluctuation amplitude of the synthetic speed of the rapeseed-oil mixture particles group along the radial direction of the screw. The fluctuation amplitude of the synthetic speed and the daily processing capacity were taken as indicators, a two-factor, three-level comprehensive test was carried out on the worm depth and the circular arc radius of the pressure ring, and the regression model between the worm depth, the circular arc radius of the pressure ring and the daily processing capacity was established and optimized to obtain the optimal value by taking into account the fluctuation amplitude of the synthetic speed and the daily processing capacity. The results showed that the simulation test had advantages for studying the internal working conditions of the screw press；the daily processing capacity of the screw press increased with the increase of the worm depth and the circular arc radius of the pressure ring; the fluctuation amplitude of synthesis rate of rapeseed-oil mixture particles was dominated by the worm depth; the optimal combination of worm depth and circular arc radius of the pressure ring was 12 mm and 6 mm, respectively.Under the optimal conditions, the daily processing capacity of the 6YL-76 single stage screw press increased by 18.26% and its working performance was improved more significantly. |
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