堆肥滚筒筛工作参数的正交模拟分析——基于离散元理论
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摘要
为了提高堆肥滚筒筛的工作效率,减小能量损耗,基于离散元理论,对影响堆肥滚筒筛工作效率的主要因素进行三因素三水平正交模拟试验。通过极差分析得到各因素对筛分性能影响的主次顺序,综合分析收集率和筛分率,得到转速32r/min、抄板高度30 mm、倾角5°时滚筒筛分性能最好。对优水平方案的处理量进行6组单因素试验,拟合试验数据表明:滚筒筛处理量为31. 05 t/h时,滚筒筛的利用率最高。
In order to improve the work efficiency of compost roller sieve and reduce energy loss,based on discrete element theory,three factors three levels orthogonal simulation tests were conducted on the main factors affecting the work-efficiency of compost roller sieve. Through range analysis,the primary and secondary sequence of various factors' influence on sieving performance was obtained. comprehensively analyzing the collection rate and sieving rate,the best performance of roller sieving was obtained when rotating speed is 32 r/min,height of shovelling plate is 60 mm and angle of inclination is 5 degrees. Six groups of single factor experiments were carried out on the processing quantity of the optimal level scheme,fitting experiments data,the maximum utilization ratio of the roller sieve is obtained when the processing quantity of the roller sieve is 31. 05 t/h.
In order to improve the work efficiency of compost roller sieve and reduce energy loss,based on discrete element theory,three factors three levels orthogonal simulation tests were conducted on the main factors affecting the work-efficiency of compost roller sieve. Through range analysis,the primary and secondary sequence of various factors' influence on sieving performance was obtained. comprehensively analyzing the collection rate and sieving rate,the best performance of roller sieving was obtained when rotating speed is 32 r/min,height of shovelling plate is 60 mm and angle of inclination is 5 degrees. Six groups of single factor experiments were carried out on the processing quantity of the optimal level scheme,fitting experiments data,the maximum utilization ratio of the roller sieve is obtained when the processing quantity of the roller sieve is 31. 05 t/h.
引文
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[2]何加骏,甄若宏,郑建初.畜禽粪便的循环利用探析[J].江苏农业科学,2011,39(4):487-488.
[3]朱建国,陈维春,王亚静.农业废弃物资源化综合利用管理[M].北京:化学工业出版社,2015.
[4]金石坚.正确选择圆筒旋转筛转速的探讨[J].粮食与饲料工业,1999(11):7-9.
[5]蔡玉良,杨学权,丁晓龙,等.滚筒筛内物料运动过程的分析[J].水泥工程,2010(2):5-8.
[6]杜皖宁.筛分机械处理量的合理选择[J].金属矿山,2001(4):55.
[7]唐红侠,赵由才.滚筒筛筛分生活垃圾的理论研究[J].环境工程学报,2007(12):124-127.
[8]焦红光,赵跃民.用颗粒离散元法模拟筛分过程[J].中国矿业大学学报,2007,36(2):232-236.
[9]冯常建,毕阳,胡文威.基于EDEM数值模拟的沙棘脱果滚筒筛仿真试验[J].林业机械与木工设备,2016,44(6):34-37.
[10]施昱,王庆海,叶伟.基于EDEM软件数值模拟的滚筒筛优化设计[J].环境工程学报,2016,10(9):5197-5202.
[11]胡国明.颗粒系统的离散元素法分析仿真[M].武汉:武汉理工大学出版社,2010.
[12] Cundall P A,Strack O D L. A discrete numerical model for granular assemblies[J]. Géotechni-que,2008,30(30):331-336.
[13] Cundall P A. A computer model for simulating progressive,large-scale movements in blocky rock systems[J]. Proc.int. symp. on Rock Fra-cture,1971(1):11-18.
[14]王卫华,李夕兵.离散元法及其在岩土工程中的应用综述[J].岩土工程技术,2005,19(4):177-181.
[15] Corkum A G,Martin C D. Analysis of a rock slide stabilized with a toe-berm:a casestudy in British Columbia,Canada[J]. Inte-rnational Journal of Rock Mechanics&Mining Sciences,2004,41(7):1109-1121.
[16] Govender N,Rajamani R K,Kok S,et al. Disc-rete element simulation of mill charge in 3D using the Blaze-dem GPU framework[J]. Mi-nerals Engineering,2015,79:152-168.
[17]张荣善.散料输送与贮存[M].北京:化学工业出版社,1994.
[18]刘廷发.堆肥滚筒筛分机开发研究[D].北京:中国农业机械化科学研究院,2017.
[19]李兵,董志颖,赵由才,等.城市生活垃圾滚筒筛分选特性研究[J].环境科学学报,2011,31(10):2268-2274.
[20]阳小霜.矿化垃圾筛分与垃圾渗滤液腐殖质性质表征研究[D].上海:同济大学,2008.
[21]唐冲,惠辉辉.基于Matlab的高斯曲线拟合求解[J].计算机与数字工程,2013,41(8):1262-1263.