CAJ | 학술논문

为降低玉米籽粒脱粒过程中的机械损伤，掌握玉米果穗在不同籽粒含水率、不同喂入形式和不同脱粒辊转速下在双喂入口脱粒装置上与玉米籽粒破碎率的关系，对不同含水率的玉米穗进行了不同喂入形式和不同脱粒辊转速的脱粒试验。分析结果表明：籽粒含水率25％时，籽粒破碎率明显高于含水率13．5％的值；玉米穗从A喂入口喂入是以冲击脱粒方式为主，玉米籽粒破碎率高；从B喂入口喂入是以差速脱粒方式为主，玉米籽粒破碎率低；在同一含水率下，从A喂入口与B喂入口喂入，籽粒破碎率都随脱粒辊转速的增加而增加。研究成果为改进脱粒工艺和减少玉米破碎提供了依据。
위강저옥미자립탈립과정중적궤계손상，장악옥미과수재불동자립함수솔、불동위입형식화불동탈립곤전속하재쌍위입구탈립장치상여옥미자립파쇄솔적관계，대불동함수솔적옥미수진행료불동위입형식화불동탈립곤전속적탈립시험。분석결과표명：자립함수솔25％시，자립파쇄솔명현고우함수솔13．5％적치；옥미수종A위입구위입시이충격탈립방식위주，옥미자립파쇄솔고；종B위입구위입시이차속탈립방식위주，옥미자립파쇄솔저；재동일함수솔하，종A위입구여B위입구위입，자립파쇄솔도수탈립곤전속적증가이증가。연구성과위개진탈립공예화감소옥미파쇄제공료의거。
For reducing mechanical damage of corn kernels in the process of threshing and mastering relationship of breaking damage rate of corn kernels and moisture content of kernel , feeding form of corn ear , threshing roller speeds , the experiments of corn ears threshed under different feeding form of corn ear and different threshing roller speeds and dif -ferent moisture content of kernel was proceeded on the threshing device with dual -feeding entrances .Experiment indicate: when the value of moisture content of kernel is 25%, breaking damage rate of corn kernels is significantly higher than the value of 13 .5% moisture content of kernel, when corn ear is fed from A feeding entrance, the impacting and threshing way is the main threshing way,breaking damage rate of corn kernels is high;when corn ear is fed from B feeding entrance , the way with different speeds threshing parts is the main threshing way , breaking damage rate of corn kernels is low;when corn ear is fed from A feeding entrance and B feeding entrance , breaking damage rate of corn ker-nels will increase with increase of threshing roller speed under same moisture content .It will provide a foundation for the improvement of threshing technique and the decrease of breakage of corn kernels .