关键词: 物料, 螺旋式输送装置, 输送性能, 参数优化

Abstract: In order to improve the conveying performance of the agricultural fiber material spiral conveying device, reduce the transmission power consumption and increase the productivity，the MATLAB software was used to compare the power consumption mathematical model for univariate optimization analysis，and the consistency of theoretical analysis was verified by experiments. The results showed that the optimal range of conveying performance of the screw conveyor was feeding amount 30~70 kg/min, pitch 300~355 mm, screw shaft speed 97~137 r/min.Taking the specific power consumption as the evaluation index of transportation performance，the parameter optimization experiment was carried out by Box-Benhnken response surface analysis method with 3 factors and 3 levels. The main order of the factors affecting the specific power consumption was obtained: feed amount, pitch, screw shaft speed. With the minimum power consumption as the optimization goal, the optimization result of Design-expert was used to analyze the test results, and the optimal parameter combination of various factors on the index was determined: the pitch was 335 mm, the screw shaft speed was 117 r/min, and the feeding amount was 30 kg/min, the optimized conveying performance was 8 percentage points higher than that before optimization. Above results meet the expected design goals, which could provide some reference and guidance for parameter optimization and structural improvement of the screw conveyor.

Key words: materials, screw conveying device, conveying performance, parameter optimization