料仓进料方式对螺旋输送机出料量影响
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摘要
为研究料仓进料方式对单螺旋加料机性能的影响,基于螺旋输送理论,采用EDEM离散元仿真软件,建立了具有分料装置的螺旋加料机模型,以5. 5 mm直径大豆颗粒分别在60,120 r/min下进行了螺旋加料过程数值仿真试验,计算得到了2种进料方式在2种速度下螺旋输送机的能耗,比较了两者出料量的区别,并进行了颗粒群运动形态轨迹分析.数值分析得到:动态进料方式输送时,机构初始能耗低且能耗增加缓慢,单圈出料量相对于理论出料量波动范围小且平均出料量数值和理论数值接近,颗粒运动形态较单一且颗粒之间的相对作用较少.静态进料方式输送时,料仓中物料堆积较多,机构初始能耗大,颗粒相互作用频繁使得颗粒运动形态复杂.该研究为螺旋加料机的进料方式提供了理论和数值仿真依据.
In order to study the influence of feeding mode on the performance of single screw feeder,based on screw feeding theory and using EDEM software,a screw feeding model with discharging device was established. The screw feeding process of soybean particles with 5. 5 mm diameter was simulated under 60 r/min and 120 r/min,respectively. The total energy loss in the screw feeder at the two rotation rates and the difference of the feed quantity were compared,and the trajectory of the particle group movement was analyzed. Numerical analysis shows that the mechanism has low initial energy consumption,small feeding fluctuation and less relative action between particles in dynamic feeding mode. Meanwhile,the mechanism has high initial energy consumption,big feeding fluctuation and more relative action between particles in static feeding mode. The research provides theoretical and numerical simulation bases for the feeding mode of screw feeder.
In order to study the influence of feeding mode on the performance of single screw feeder,based on screw feeding theory and using EDEM software,a screw feeding model with discharging device was established. The screw feeding process of soybean particles with 5. 5 mm diameter was simulated under 60 r/min and 120 r/min,respectively. The total energy loss in the screw feeder at the two rotation rates and the difference of the feed quantity were compared,and the trajectory of the particle group movement was analyzed. Numerical analysis shows that the mechanism has low initial energy consumption,small feeding fluctuation and less relative action between particles in dynamic feeding mode. Meanwhile,the mechanism has high initial energy consumption,big feeding fluctuation and more relative action between particles in static feeding mode. The research provides theoretical and numerical simulation bases for the feeding mode of screw feeder.
引文
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[13]万昌江,姜松. CAD在碾米机零部件设计中的应用[J].粮食与饲料工业,1997(8):10-12.WAN Changjiang,JIANG Song. Application of computer aided design(CAD)for designing components in rice whitener[J]. Food and feed industry,1997(8):10-12.(in Chinese)
[14]BOAC J M,CASADA M E,MAGHIRANG R G,et al.Material and interaction properties of selected grains and oilseeds for modeling discrete particles.[J]. Tran-sactions of the ASABE,2010,53(4):1201-1216.
[2]张西良,马奎,王辉,等.颗粒尺寸对螺旋加料机定量加料性能的影响[J].农业工程学报,2014,30(5):19-27.ZHANG Xiliang,MA Kui,WANG Hui,et al. Effect of particle size on precision dosing of screw feeder[J].Transactions of the CSAE,2014,30(5):19-27.(in Chinese)
[3]崔守娟,张西良,徐云峰,等.基于LS-SVM的螺旋定量加料预测及试验研究[J].排灌机械工程学报,2016,34(12):1099-1104.CUI Shoujuan,ZHANG Xiliang,XU Yunfeng,et al. Experimental research and prediction of screw dosing based on least squares support vector machine[J]. Journal of drainage and irrigation machinery engineering,2016,34(12):1099-1104.(in Chinese)
[4]张志洋,李红,陈超,等.溶解混施水肥一体化装置施肥性能试验研究[J].排灌机械工程学报,2018,36(11):1115-1119.ZHANG Zhiyang,LI Hong,CHEN Chao,et al. Experiment on fertilization performance of dissolved and mixed water-fertilizer integrated device[J]. Journal of drainage and irrigation machinery engineering, 2018, 36(11):1115-1119.(in Chinese)
[5]TALEBI K,MEMARIAN H,ROSTAMI J,et al. Modeling of soil movement in the screw conveyor of the earth pressure balance machines(EPBM)using computational fluid dynamics[J]. Tunnelling&underground space technology incorporating trenchless technology research,2015,47:136-142.
[6]NACHENIUS R W,WARDT T A V D,Ronsse F,et al. Residence time distributions of coarse biomass particles in a screw conveyor reactor[J]. Fuel processing techno-logy,2015,130(130):87-95
[7]向少学,王小乐.基于EDEM仿真的水平螺旋输送机输送机理分析研究[J].港口装卸,2015(5):49-51.XIANG Shaoxue,WANG Xiaole. Analysis of the transportation mechanism of horizontal screw conveying based on EDEM[J]. Port operation,2015(5):49-51.(in Chinese)
[8]刘伟立,卫红波.基于EDEM软件的螺旋输送机仿真及分析[J].机械工程师,2015(10):121-123.LIU Weili,WEI Hongbo. Simulation and analysis of screw conveyer based on EDEM software[J]. Mechanical engineer,2015(10):121-123.(in Chinese)
[9]于瑞江,汤晓华,张玉玲.基于离散元法的水平螺旋输送机仿真模拟与分析[J].电子世界,2015(21):168-170.YU Ruijiang,TANG Xiaohua,ZHANG Yuling. Simulation and analysis of the horizontal screw conveyor based on the discrete element method[J]. Electronics world,2015(21):168-170.(in Chinese)
[10]宋欢,李勇,马迎亚,等.基于离散元法的定量螺旋输送机的优化研究[J].起重运输机械,2016(2):30-34.SONG Huan,LI Yong,MA Yingya,et al. Optimal study on rationed screw conveyor based on discrete element method[J]. Hoisting and conveying machinery,2016(2):30-34.(in Chinese)
[11]李勇,刘伟冬.基于EDEM软件的单螺杆离散元模拟仿真与分析[J].起重运输机械,2017(4):78-81.LI Yong,LIU Weidong. Simulation and analysis of single screw discrete element based on EDEM software[J].Hoisting and conveying machinery,2017(4):78-81.(in Chinese)
[12]郭宇航.基于EDEM不同叶片形状垂直螺旋输送机的结构设计[J].内燃机与配件,2017(24):37-38.GUO Yuhang. Structural design of vertical helical conveyor with different blade shapes based on EDEM[J]. Internal combustion engine&parts,2017(24):37-38.(in Chinese)
[13]万昌江,姜松. CAD在碾米机零部件设计中的应用[J].粮食与饲料工业,1997(8):10-12.WAN Changjiang,JIANG Song. Application of computer aided design(CAD)for designing components in rice whitener[J]. Food and feed industry,1997(8):10-12.(in Chinese)
[14]BOAC J M,CASADA M E,MAGHIRANG R G,et al.Material and interaction properties of selected grains and oilseeds for modeling discrete particles.[J]. Tran-sactions of the ASABE,2010,53(4):1201-1216.