基于CFD的切段式甘蔗收获机除杂室结构参数优化

打开文本图片集

中图分类号：S225.53 文献标识码：A 文章编号：2095-5553（2025）08-0038-08

Abstract：Theeficiencyof theextractorinasugarcanechopperharvesterisdirectlyimpactedbytheinternalairflowfield. Toenhance theextractor'sperformance，we investigatedthe influenceof thecleaning chamberon theairflow field，and subsequentlyoptimized thestructureof thechamber.Computationalfluiddynamics（CFD）was employedto simulate the flowfieldof the extractor system，and single-factor and combinedoptimization simulation tests were conducted，using gap width，inletradius，grillarea，andgrilltypeasinfluentialfactors.Thestaticpressureandflowvelocitywereusedas performance indicators. The simulation results revealed that，with the fan speed set at 1000Δr/min ，the optimum performance of the extractor was achieved with a gap width of 41mm ，an inlet radius of 323mm ，and a grill area of .The static pressure reached 147Pa ，and the flowvelocity reached 14.42m/s .These values represent a significant improvement compared to the original extractor，with a 41% increase in static pressure and a 31% increase in flowvelocity.The stability of the internal flow field was significantly improved.

KeyWords：sugarcane chopper harvester; CFD；cleaning chamber；cleaning extractor；structure parameters

0 引言

甘蔗是我国制糖的主要原料，作为甘蔗收获的主要机械设备，切段式甘蔗收获机对倒伏甘蔗适应性强，具有较高的工作效率，是国内外甘蔗收获的主流机型[1.2]。（剩余9560字）