振动筛不同运动形式对颗粒群筛分的影响
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摘要
为研究不同运动形式振动筛的筛分性能,对平面往复、三移动一摆动、三移动两转动振动筛筛面上颗粒的分散程度进行分析和试验。基于颗粒非线性跳动理论,利用Matlab软件模拟得出颗粒在不同运动形式筛面上的运动状态;以分散度为试验指标,利用高速摄像机对玉米颗粒在3种振动平板上的运动进行跟踪。颗粒在振动平板上的运动规律证明了颗粒非线性跳动理论分析结果的正确性,随着振动筛主轴转速逐渐增大,颗粒群在3种振动平板上的分散度均呈现先增大、后减小的变化规律。在振动筛主轴最优转速下,玉米颗粒群在三移动一摆动、三移动两转动振动筛筛面上的综合分散度分别为38. 96 mm和40. 73 mm,较平面往复振动筛分别提高了14. 39%和19. 58%。以筛分效率为试验指标,利用3种振动筛筛面进行物料筛分试验,物料筛分试验结果表明,颗粒群在3种振动筛上的筛分效率由高到低依次为:三移动两转动振动筛、三移动一摆动振动筛、平面往复振动筛。物料筛分试验结果证明了用振动平板对颗粒群分散度进行研究的可行性,同时验证了平板试验结果的正确性。
Aiming to determine the screening performance of the vibration screen with different motion forms,the dispersion of particles on the plane reciprocating vibration screen,the vibration screen with three translations and one swing,and the vibration screen with three translations and two rotations were studied. Based on the nonlinear law of particle moving,the movements of particles on different screens with different motions were simulated by Matlab. The dispersity was taken as the experimental index. The motions of maize particles on three kinds of vibrating plate were tracked by high speed camera. The motion law of the particles on the vibration plate verified the correctness of the results of nonlinear law of particle moving based on theoretical analysis. The dispersity of the particles on the three kinds of vibration plates was increased firstly and then decreased with the increase of the spindle speed of the vibrating screen. At optimum rotating speed of the main shaft of the vibrating screen,the comprehensive dispersion of the maize particle group on the vibration plate with three translations and one swing and the vibration plate with three translations and two rotations were respectively 38. 96 mm and 40. 73 mm,which were 14. 39% and 19. 58% higher than that of the plane reciprocating vibration plate. The screening efficiency was taken as test index,and vibrating screens with three kinds of motions were tested for screening material. The results of material screening test showed that the screening efficiency of particle group on three kinds of vibrating screens from high to low was: the vibration screen with three translations and two rotations,the vibration screen with three translations and one swing and plane reciprocating vibrating screen. The results of material screening test verified the feasibility of studying the dispersion of particle group by using the vibrating plate and the correctness of the results. The research results provided references for the analysis of screening performance of the vibration screen with different motion forms and the design and application of the new vibration screen.
Aiming to determine the screening performance of the vibration screen with different motion forms,the dispersion of particles on the plane reciprocating vibration screen,the vibration screen with three translations and one swing,and the vibration screen with three translations and two rotations were studied. Based on the nonlinear law of particle moving,the movements of particles on different screens with different motions were simulated by Matlab. The dispersity was taken as the experimental index. The motions of maize particles on three kinds of vibrating plate were tracked by high speed camera. The motion law of the particles on the vibration plate verified the correctness of the results of nonlinear law of particle moving based on theoretical analysis. The dispersity of the particles on the three kinds of vibration plates was increased firstly and then decreased with the increase of the spindle speed of the vibrating screen. At optimum rotating speed of the main shaft of the vibrating screen,the comprehensive dispersion of the maize particle group on the vibration plate with three translations and one swing and the vibration plate with three translations and two rotations were respectively 38. 96 mm and 40. 73 mm,which were 14. 39% and 19. 58% higher than that of the plane reciprocating vibration plate. The screening efficiency was taken as test index,and vibrating screens with three kinds of motions were tested for screening material. The results of material screening test showed that the screening efficiency of particle group on three kinds of vibrating screens from high to low was: the vibration screen with three translations and two rotations,the vibration screen with three translations and one swing and plane reciprocating vibrating screen. The results of material screening test verified the feasibility of studying the dispersion of particle group by using the vibrating plate and the correctness of the results. The research results provided references for the analysis of screening performance of the vibration screen with different motion forms and the design and application of the new vibration screen.
引文
[1]李耀明.水稻梳脱混合物复脱分离、清选特性的研究[D].南京:南京农业大学,2004.LI Yaoming. Study on separation of rethreshed stripped mixtures and their cleaning characteristics for rice[D]. Nanjing:Nanjing Agricultural University,2004.(in Chinese)
[2]徐立章,李耀明,张立功,等.轴流式脱粒一清选装置试验台的设计[J].农业机械学报,2007,38(12):85-88.XU Lizhang,LI Yaoming,ZHANG Ligong,et al. Development on test-bed of axial threshing and cleaning unit[J]. Transactions of the Chinese Society for Agricultural Machinery,2007,38(12):85-88.(in Chinese)
[3]杨晓彬.三维振动筛的设计及透筛过程中颗粒物料运动仿真[D].镇江:江苏大学,2009.YANG Xiaobin. Design of three-dimension vibrating screen and material's motion simulation during screening process[D].Zhenjiang:Jiangsu University,2009.(in Chinese)
[4]张路霞,李云峰.振动筛筛分效率的影响因素分析[J].煤矿机械,2008,29(11):74-76.ZHANG Luxia,LI Yunfeng. Analysis of influence factor in shaker screening efficiency[J]. Coal Mine Machinery,2008,29(11):74-76.(in Chinese)
[5]刘晓飞.农业物料在三自由度风筛清选中的运动仿真及试验研究[D].镇江:江苏大学,2017.LIU Xiaofei. Motion simulation and experimental study of agricultural materials in 3-DOF air and screen cleaning device[D].Zhenjiang:Jiangsu University,2017.(in Chinese)
[6]王成军.典型农业物料在三维并联振动筛中的筛分理论与试验[D].镇江:江苏大学,2012.WANG Chengjun. Screening theory and experiment of typical agricultural materials on the three-dimensional parallel vibration screen[D]. Zhenjiang:Jiangsu University,2012.(in Chinese)
[7] WANG L J,DING Z J,MENG S,et al. Kinematics and dynamics of a particle on a non-simple harmonic vibrating screen[J].Particuology,2017,32:167-177.
[8]王成军,刘琼,马履中,等.棉籽颗粒在三自由度混联振动筛面上的运动规律[J].农业工程学报,2015,31(6):49-56.WANG Chengjun,LIU Qiong,MA Lüzhong,et al. Cottonseed particle motion law in 3-DOF hybrid vibration screen surface[J]. Transactions of the CSAE,2015,31(6):49-56.(in Chinese)
[9]马履中,林钰珍,杨文亮,等.基于颗粒运动的多维振动筛分效率分析[J].农业机械学报,2009,40(10):62-66.MA Lüzhong,LIN Yuzhen,YANG Wenliang,et al. Analysis on efficiency of the dimensional vibration sieve based on the movements of grains[J]. Transactions of the Chinese Society for Agricultural Machinery,2009,40(10):62-66.(in Chinese)
[10]赵跃民,张曙光,焦红光,等.振动平面上粒群运动的离散元模拟[J].中国矿业大学学报,2006,35(5):586-590.ZHAO Yuemin,ZHANG Shuguang,JIAO Hongguang,et al. Simulation of discrete element of particles motion on the vibration plane[J]. Journal of China University of Mining and Technology,2006,35(5):586-590.(in Chinese)
[11]刘琼.三自由度混联振动筛及颗粒群运动规律研究[D].淮南:安徽理工大学,2016.LIU Qiong. Study on 3-DOF hybrid vibration screen and particle motion law in screen surface[D]. Huainan:Anhui University of Science and Technology,2016.(in Chinese)
[12]刘初升,陆金新.筛分过程中颗粒运动的非线性特性研究[J].煤炭学报,2009,34(4):556-559.LIU Chusheng,LU Jinxin. Study on the nonlinear characteristic of particle motion during the process of coal screening[J].Journal of China Coal Society,2009,34(4):556-559.(in Chinese)
[13]刘初升,赵跃民.振动筛面上单颗粒运动的非线性特性的研究[J].矿山机械,1999(1):45-46.
[14]沈惠平,张会芳,张江涛,等.并联运动振动筛的筛分运动规律及其轨迹的研究[J].机械设计,2008,25(12):20-24.SHEN Huiping,ZHANG Huifang,ZHANG Jiangtao,et al. Study on the movement regularity and trajectory of the shunt vibrating screen[J]. Mechanical Design,2008,25(12):20-24.(in Chinese)
[15]沈惠平,王新翔,邓嘉鸣,等.并联振动筛与直线筛筛分效果的试验比较研究[J].矿山机械,2012,40(5):79-83.SHEN Huiping,WANG Xinxiang,DENG Jiaming,et al. Experimental comparison study on screening performance between parallel vibrating screen and linear vibrating screen[J]. Mining&Processing Equipment,2012,40(5):79-83.(in Chinese)
[16]李菊,王增彪,沈惠平,等.凸柱筛面并联振动筛的谷物筛分试验与分析[J].机械设计与研究,2016,32(1):150-154,158.LI Ju,WANG Zengbiao,SHEN Huiping,et al. Experiment and analysis of parallel vibrating sieve with convex column screen surface on grain screening[J]. Machine Design and Research,2016,32(1):150-154,158.(in Chinese)
[17]李菊,曾氢菲,邓嘉鸣,等.多维并联振动筛筛分过程解析与筛面运动形式优选[J].农业机械学报,2016,47(11):399-407.LI Ju,ZENG Qingfei,DENG Jiaming,et al. Screening process analysis for multi-dimensional parallel vibrating screen and optimization of screen surface movement[J]. Transactions of the Chinese Society for Agriculturral Machinery,2016,47(11):399-407.(in Chinese)
[18] PAUL W C,MATTHEW D S,ROB D M. Separation performance of double deak banana screens—Part2:quantitative predictions[J]. Minerals Engineering,2009,22(14):1230-1244.
[19]王立军,段良坤,郑招辉,等.三移动两转动振动筛驱动机构优化试验[J/OL].农业机械学报,2018,49(6):138-145.WANG Lijun,DUAN Liangkun,ZHENG Zhaohui,et al. Optimization and experiment on driving mechanism of vibrating screen with three translations and two rotations[J/OL]. Transactions of the Chinese Society for Agricultural Machinery,2018,49(6):138-145. http:∥www. j-csam. org/jcsam/ch/reader/view_abstract. aspx? flag=1&file_no=20180616&journal_id=jcsam.DOI:10. 6041/j. issn. 1000-1298. 2018. 06. 016.(in Chinese)
[20]刘秉承.非线性动力学与混沌基础[M].长春:东北师范大学出版社,1994.
[21]李耀明,赵湛,陈进,等.风筛式清选装置上物料的非线性运动规律[J].农业工程学报,2007,23(11):142-147.LI Yaoming,ZHAO Zhan,CHEN Jin,et al. Nonlinear motion law of material on air-and-screen cleaning mechanism[J].Transactions of the CSAE,2007,23(11):142-147.(in Chinese)
[22] WANG Lijun,ZHOU Wenxiu,DING Zhenjun,et al. Experimental determination of parameter effects on the coefficient of restitution of differently shaped maize in three-dimensions[J]. Powder Technology,2015,284:187-194.
[2]徐立章,李耀明,张立功,等.轴流式脱粒一清选装置试验台的设计[J].农业机械学报,2007,38(12):85-88.XU Lizhang,LI Yaoming,ZHANG Ligong,et al. Development on test-bed of axial threshing and cleaning unit[J]. Transactions of the Chinese Society for Agricultural Machinery,2007,38(12):85-88.(in Chinese)
[3]杨晓彬.三维振动筛的设计及透筛过程中颗粒物料运动仿真[D].镇江:江苏大学,2009.YANG Xiaobin. Design of three-dimension vibrating screen and material's motion simulation during screening process[D].Zhenjiang:Jiangsu University,2009.(in Chinese)
[4]张路霞,李云峰.振动筛筛分效率的影响因素分析[J].煤矿机械,2008,29(11):74-76.ZHANG Luxia,LI Yunfeng. Analysis of influence factor in shaker screening efficiency[J]. Coal Mine Machinery,2008,29(11):74-76.(in Chinese)
[5]刘晓飞.农业物料在三自由度风筛清选中的运动仿真及试验研究[D].镇江:江苏大学,2017.LIU Xiaofei. Motion simulation and experimental study of agricultural materials in 3-DOF air and screen cleaning device[D].Zhenjiang:Jiangsu University,2017.(in Chinese)
[6]王成军.典型农业物料在三维并联振动筛中的筛分理论与试验[D].镇江:江苏大学,2012.WANG Chengjun. Screening theory and experiment of typical agricultural materials on the three-dimensional parallel vibration screen[D]. Zhenjiang:Jiangsu University,2012.(in Chinese)
[7] WANG L J,DING Z J,MENG S,et al. Kinematics and dynamics of a particle on a non-simple harmonic vibrating screen[J].Particuology,2017,32:167-177.
[8]王成军,刘琼,马履中,等.棉籽颗粒在三自由度混联振动筛面上的运动规律[J].农业工程学报,2015,31(6):49-56.WANG Chengjun,LIU Qiong,MA Lüzhong,et al. Cottonseed particle motion law in 3-DOF hybrid vibration screen surface[J]. Transactions of the CSAE,2015,31(6):49-56.(in Chinese)
[9]马履中,林钰珍,杨文亮,等.基于颗粒运动的多维振动筛分效率分析[J].农业机械学报,2009,40(10):62-66.MA Lüzhong,LIN Yuzhen,YANG Wenliang,et al. Analysis on efficiency of the dimensional vibration sieve based on the movements of grains[J]. Transactions of the Chinese Society for Agricultural Machinery,2009,40(10):62-66.(in Chinese)
[10]赵跃民,张曙光,焦红光,等.振动平面上粒群运动的离散元模拟[J].中国矿业大学学报,2006,35(5):586-590.ZHAO Yuemin,ZHANG Shuguang,JIAO Hongguang,et al. Simulation of discrete element of particles motion on the vibration plane[J]. Journal of China University of Mining and Technology,2006,35(5):586-590.(in Chinese)
[11]刘琼.三自由度混联振动筛及颗粒群运动规律研究[D].淮南:安徽理工大学,2016.LIU Qiong. Study on 3-DOF hybrid vibration screen and particle motion law in screen surface[D]. Huainan:Anhui University of Science and Technology,2016.(in Chinese)
[12]刘初升,陆金新.筛分过程中颗粒运动的非线性特性研究[J].煤炭学报,2009,34(4):556-559.LIU Chusheng,LU Jinxin. Study on the nonlinear characteristic of particle motion during the process of coal screening[J].Journal of China Coal Society,2009,34(4):556-559.(in Chinese)
[13]刘初升,赵跃民.振动筛面上单颗粒运动的非线性特性的研究[J].矿山机械,1999(1):45-46.
[14]沈惠平,张会芳,张江涛,等.并联运动振动筛的筛分运动规律及其轨迹的研究[J].机械设计,2008,25(12):20-24.SHEN Huiping,ZHANG Huifang,ZHANG Jiangtao,et al. Study on the movement regularity and trajectory of the shunt vibrating screen[J]. Mechanical Design,2008,25(12):20-24.(in Chinese)
[15]沈惠平,王新翔,邓嘉鸣,等.并联振动筛与直线筛筛分效果的试验比较研究[J].矿山机械,2012,40(5):79-83.SHEN Huiping,WANG Xinxiang,DENG Jiaming,et al. Experimental comparison study on screening performance between parallel vibrating screen and linear vibrating screen[J]. Mining&Processing Equipment,2012,40(5):79-83.(in Chinese)
[16]李菊,王增彪,沈惠平,等.凸柱筛面并联振动筛的谷物筛分试验与分析[J].机械设计与研究,2016,32(1):150-154,158.LI Ju,WANG Zengbiao,SHEN Huiping,et al. Experiment and analysis of parallel vibrating sieve with convex column screen surface on grain screening[J]. Machine Design and Research,2016,32(1):150-154,158.(in Chinese)
[17]李菊,曾氢菲,邓嘉鸣,等.多维并联振动筛筛分过程解析与筛面运动形式优选[J].农业机械学报,2016,47(11):399-407.LI Ju,ZENG Qingfei,DENG Jiaming,et al. Screening process analysis for multi-dimensional parallel vibrating screen and optimization of screen surface movement[J]. Transactions of the Chinese Society for Agriculturral Machinery,2016,47(11):399-407.(in Chinese)
[18] PAUL W C,MATTHEW D S,ROB D M. Separation performance of double deak banana screens—Part2:quantitative predictions[J]. Minerals Engineering,2009,22(14):1230-1244.
[19]王立军,段良坤,郑招辉,等.三移动两转动振动筛驱动机构优化试验[J/OL].农业机械学报,2018,49(6):138-145.WANG Lijun,DUAN Liangkun,ZHENG Zhaohui,et al. Optimization and experiment on driving mechanism of vibrating screen with three translations and two rotations[J/OL]. Transactions of the Chinese Society for Agricultural Machinery,2018,49(6):138-145. http:∥www. j-csam. org/jcsam/ch/reader/view_abstract. aspx? flag=1&file_no=20180616&journal_id=jcsam.DOI:10. 6041/j. issn. 1000-1298. 2018. 06. 016.(in Chinese)
[20]刘秉承.非线性动力学与混沌基础[M].长春:东北师范大学出版社,1994.
[21]李耀明,赵湛,陈进,等.风筛式清选装置上物料的非线性运动规律[J].农业工程学报,2007,23(11):142-147.LI Yaoming,ZHAO Zhan,CHEN Jin,et al. Nonlinear motion law of material on air-and-screen cleaning mechanism[J].Transactions of the CSAE,2007,23(11):142-147.(in Chinese)
[22] WANG Lijun,ZHOU Wenxiu,DING Zhenjun,et al. Experimental determination of parameter effects on the coefficient of restitution of differently shaped maize in three-dimensions[J]. Powder Technology,2015,284:187-194.