气力往复式三七排种器设计与仿真试验

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中图分类号：S223.2 文献标识码：A 文章编号：2095-5553（2026）02-0039-09

Abstract：Aiming at problems such as large mass，inconvenient handling，and complicated disassembly and repair of the existingseedingdevice，apneumaticreciprocating panaxpseudoginseng sed meteringdevicewas designed.Thisdevice is basedonthe working principleof negative pressure seed extraction and positive pressure seed feeding and completes the work through thereciprocating motionof thesuction nozzle.In thispaper，through theanalysisof thereciprocating frequencyanalysisof theseed metering device，thecalculationofseedfilingconditions，and theanalysisofseed force， the dimensionsand working parametersof thecriticalcomponentsoftheseed metering devicearedetermined．With the helpofEDEM software to simulate andanalyze the diameteroftheseed tube，the best diameterof the seed tube was 16mm with the intensity of population disturbanceas the test index，the CFD—DEM fluid-solid coupling method was used to analyze the insertion oftheseed tube，and withthequalifiedrateofseed charging andthe leakagerateas the test index，the final determination of the reach of the seed tube was 10mm ，which providesa theoretical reference forthe optimization of the structure of the pneumatic reciprocating panax pseudoginseng seed metering device.

Keywords： panax pseudoginseng seedling sowing; pneumatic reciprocating seed metering device;EDEM; CFD—DEM

0 引言

三七是我国著名的中药材[1]，云南省三七产量及种植面积占据全国 90% 以上[2]。（剩余14250字）