倾斜空心双头螺旋排肥器优化设计与试验

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中图分类号：S224.2 文献标识码：A 文章编号：2095-2953（2026）01-0028-09

Abstract：Toaddress theissesof large flowpulsationanduneven fertilizerdischarge in traditional spiral fertilizer spreaders，aninclined hollowdouble-helix fertilizer spreaderbasedonthe inclined installationofordinaryspiral fertilizerspreaderswasdesigned.Itreduces theperiodicflowpulsationatthefertilizeroutletthrough thebackflowof fertilizer particlesatthecenterof thespiral blades，therebyimprovingtheuniformityoffertilizerdischarge.Through dischargeuniforprincipleanalysis，thetheoretical fertilizerdischarge rateof the spreaderandthe influence of parameters on mity were determined，and asimulation model of the inclined holow double-helix fertizer spreader was established using EDEM.The spreader was manufactured according to the optimal parameter combination and subjected to bench tests.Thetestresults indicatethattherelativeerrorsof thefluctuationcoeffcientoffertilizerdischargeuniformity and the fertilizer application amount per revolution between the bench test and the simulation test are 3.47% and 3.25% respectively，showing good agreement between the two tests.Compared with the unoptimized state，the fluctuation coefficient of fertilizer discharge uniformity decreased by 5.94% ，and the fertilizer application amount per revolution increased by 13.98% . The fluctuation coefficient of discharge uniformity of the inclined hollow double-helix fertilizer spreaderis significantlyreduced under the optimal parameter combination.This studycan provide partial reference for the design of similar spiral fertilizer spreaders.

Key Words：agricultural machinery；holow spiral fertilizer spreader;double-headspiral；fertilizer dischargeuniformity；EDM

精量施肥是一种根据作物所需养分进行精确高效施肥的措施，不仅能够为作物生长提供必要养分，还能够有效提高肥料的利用率并降低对自然环境的破坏[1]。（剩余10322字）