吉林农业大学学报
吉林農業大學學報
길임농업대학학보
JOURNAL OF JILIN AGRICUL TURAL UNIVERSITY
2014年
2期
224-233
,共10页
陈争光%王德福%刘立意%于克强
陳爭光%王德福%劉立意%于剋彊
진쟁광%왕덕복%류립의%우극강
玉米秸秆%皮穰分离%有效比能%总比能
玉米秸稈%皮穰分離%有效比能%總比能
옥미갈간%피양분리%유효비능%총비능
corn stalk%separation of rind and pith%effective specific energy%total specific energy
在自行设计的玉米秸秆分离装置上,使用电功率差值法测量其关键机构---刮穰机构的能耗。选取该机构的4个参数作为影响因子:刮穰辊转速、齿-板间隙、秸秆喂入速度和刮刀片齿刃角;选取有效比能、总比能、能量利用比3个指标作为评价指标,在正交试验的基础上,采用响应面方法分析得到各试验因素对评价指标影响规律模型。结果表明:有效比能变化范围0.5~2.0 Wh/kg,总比能变化范围4.0~13.0 Wh/kg,能量利用比的变化范围11%~24%。在3个模型中,间隙和转速对评价指标的影响均较显著,其中刮刀片齿刃角对有效比能、总比能影响不显著。综合考虑各评价指标、工作效率和刮穰效果,最后选取刮穰机构的工作参数:刮穰辊转速840 r/min,秸秆喂入辊转速413 r/min,齿-板间隙1.56 mm,刮刀片齿刃角25°,此时有效比能、总比能、能量利用比分别为2.21 Wh/kg、10.73 Wh/kg和22.29%。
在自行設計的玉米秸稈分離裝置上,使用電功率差值法測量其關鍵機構---颳穰機構的能耗。選取該機構的4箇參數作為影響因子:颳穰輥轉速、齒-闆間隙、秸稈餵入速度和颳刀片齒刃角;選取有效比能、總比能、能量利用比3箇指標作為評價指標,在正交試驗的基礎上,採用響應麵方法分析得到各試驗因素對評價指標影響規律模型。結果錶明:有效比能變化範圍0.5~2.0 Wh/kg,總比能變化範圍4.0~13.0 Wh/kg,能量利用比的變化範圍11%~24%。在3箇模型中,間隙和轉速對評價指標的影響均較顯著,其中颳刀片齒刃角對有效比能、總比能影響不顯著。綜閤攷慮各評價指標、工作效率和颳穰效果,最後選取颳穰機構的工作參數:颳穰輥轉速840 r/min,秸稈餵入輥轉速413 r/min,齒-闆間隙1.56 mm,颳刀片齒刃角25°,此時有效比能、總比能、能量利用比分彆為2.21 Wh/kg、10.73 Wh/kg和22.29%。
재자행설계적옥미갈간분리장치상,사용전공솔차치법측량기관건궤구---괄양궤구적능모。선취해궤구적4개삼수작위영향인자:괄양곤전속、치-판간극、갈간위입속도화괄도편치인각;선취유효비능、총비능、능량이용비3개지표작위평개지표,재정교시험적기출상,채용향응면방법분석득도각시험인소대평개지표영향규률모형。결과표명:유효비능변화범위0.5~2.0 Wh/kg,총비능변화범위4.0~13.0 Wh/kg,능량이용비적변화범위11%~24%。재3개모형중,간극화전속대평개지표적영향균교현저,기중괄도편치인각대유효비능、총비능영향불현저。종합고필각평개지표、공작효솔화괄양효과,최후선취괄양궤구적공작삼수:괄양곤전속840 r/min,갈간위입곤전속413 r/min,치-판간극1.56 mm,괄도편치인각25°,차시유효비능、총비능、능량이용비분별위2.21 Wh/kg、10.73 Wh/kg화22.29%。
Electric power difference method was adopted to measure power consumption of the key mecha-nism---pith-stripping mechanism based on self-design rind-pith separation equipment for corn stalk . The four parameters,pith-stripping roll′s rotational speed,clearance between scrapers and supporting plate,feeding speed for corn stalk,and helix angle of scraper,were selected as experimental factors .Ef-fective specific energy(Ee),total specific energy(Et)and energy utilization ratio(ρ)were chosen as eval-uation indexes .Four-factor quadratic regression orthogonal rotation experimental design was applied .The effect models of all factors influencing evaluation indexes were obtained via response surface analysis . Within the range of the test parameters,the results were as follows:Ee was 0.5-2.0 Wh/kg,Et was 4.0-1 3.0 Wh/kg andρwas 1 1%-24%.Among three models,clearance and rotational speed of the pith-stripping roll had significant effect on three evaluation indexes,whereas the helix angle of scraper had little effect on total specific energy .Considering all evaluation indexes,production efficiency and quality of rind of corn stalk,the optimization tests showed that Ee ,Et and,ρwere 2.21 Wh/kg,1 0.73 Wh/kg and 22.29% respectively when pith-stripping roll′s rotational speed,feeding speed,clearance and helix angle were 840 r/min,41 3 r/min,1.56 mm and 25°respectively .These data could guide the design and optimization of rind-pith separation equipment for corn stalk .