中国农业科技导报2026，Vol.28Issue(4)：130-140,11.DOI:10.13304/j.nykjdb.2025.0540
四头螺旋双行排肥器破结装置设计与试验
Design and Experiment of Crushing Device for Quad-screw Double-row Fertilizer Apparatus
摘要
Abstract
In order to solve the problems of blockage fertilizer discharge port and uneven fertilizer discharge caused by fertilizer agglomeration in the field operation of rapeseed seeding machine,a quad-screw double-row spiral fertilizer discharger with crushing device was designed,the main structural parameters of the crushing device were determined,the three-dimensional modeling of the cake fertilizers was obtained by 3D scanning,and the influence of the structure of the crushing device on the effect of the cake fertilizers and the fertilizer discharge performance of the fertilizer discharger were analyzed by EDEM simulation.The results of orthogonal experiment showed that the crushing device could significantly improve the crushing rate of cake fertilizers and the uniformity of fertilizer discharge of the fertilizer discharger.The main and secondary factors affecting the crushing rate of cake fertilizers were showed:length of broken teeth＞shape of broken teeth＞arrangement of broken teeth.The main and secondary factors affecting the instantaneous fertilizer discharge rate and fertilizer discharge uniformity were as follows:the length of the broken teeth＞the arrangement of the broken teeth＞the shape of the broken teeth,and the crushing rate,the coefficient of variation of the instantaneous fertilizer discharge rate and the uniformity of the fertilizer discharge were 88.78%,22.54%and 15.36%,respectively.Under the optimal parameter combination,when the speed of the crushing device was 22.5 r·min-1,the bench test showed that the crushing rate of the cake fertilizers of the four-head double-row spiral manure discharger with the crushing device was 89.23%,and the coefficient of variation of the uniformity of the fertilizer discharge was 11.58%,which were 68.67%and 33.70%higher than that of the non-knotting device manure discharger.PIVlab analysis showed that the movement trend of fertilizer particles in the actual experiment was basically consistent with that of the simulation test.The crushing device promoted the consistency of the auger filling coefficient of manure discharge and improved the uniformity of manure discharge.Above results provided reference for the crushing of cake fertilizers and the improvement of the structure of the quad-screw double-row spiral fertilizer apparatus.关键词
结块复合肥/破结装置/破碎率/排肥性能/粒子图像测速分析Key words
caked compound fertilizers/crushing device/crushing rate/fertilizer discharge performance/particle image velocimetry analysis分类
农业科技引用本文复制引用
刘亚丽,肖文立..四头螺旋双行排肥器破结装置设计与试验[J].中国农业科技导报,2026,28(4):130-140,11.基金项目
湖南省智能农机装备创新研发项目(HN202308). （HN202308）
