热磨机磨片齿形结构的设计及静力学分析
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摘要
热磨机磨片的齿形结构是磨片和原料间传递能量的主要方式,它与木片原料被研磨时的运动状态和研磨时间,以及纤维制备过程中纤维质量和设备的能耗密切相关。笔者根据磨片破碎区、粗磨区、精磨区的齿形结构、磨齿倾角、周向齿等参数对纤维分离能耗的影响以及磨片的设计要求,设计了一种有利于降低纤维分离能耗的热磨机磨片,并运用ABAQUS软件对磨片进行了静力学分析,分析结果表明磨片受到的静力作用对自身影响很小,设计满足要求。
The tooth structure of refiner plates is the main way of energy transfer between the disc and the raw materials, wood raw materials by the state of motion and influence of grinding time, energy and fiber in the preparation process of fiber quality and equipment are closely related. Therefore, according to the influence of grinding zone, coarse grinding, fine grinding zone area of the tooth structure, grinding angle and circumferential tooth parameters on fiber separation and energy consumption requirements of grinding design, the hot mill grinding which can reduce the energy consumption of the fiber separation of refiner plates is designed, and the static analysis using ABAQUS software is conduced. The analysis results show that the static process to the grinding has little influence on itself; the design meets the strength requirements.
The tooth structure of refiner plates is the main way of energy transfer between the disc and the raw materials, wood raw materials by the state of motion and influence of grinding time, energy and fiber in the preparation process of fiber quality and equipment are closely related. Therefore, according to the influence of grinding zone, coarse grinding, fine grinding zone area of the tooth structure, grinding angle and circumferential tooth parameters on fiber separation and energy consumption requirements of grinding design, the hot mill grinding which can reduce the energy consumption of the fiber separation of refiner plates is designed, and the static analysis using ABAQUS software is conduced. The analysis results show that the static process to the grinding has little influence on itself; the design meets the strength requirements.
引文
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[13]陈光伟,花军,贾娜,等.磨片结构对纤维分离过程中能量转换机理的影响[J].东北林业大学报, 2010(8):109-110.
[14] Dinesh Fernando,GeoffreyDaniel.ExploringScots pine fiber development mechanisms during TMP process[J].Holzforschung, 2008,62:597-607.
[15]郑纲,齐英杰,邹利刚,等.长材刨片机切削过程转矩滑模控制的研究[J].林产工业. 2018, 45(4):30-33.
[16]Berg J E, Gulliksson M E, Gradin P A. On the energy consumption for crack development in fiber wall in disc refining-a micromechanical approach[J]. Holzforschung, 2009, 63:204-210.
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[19]吴哲,陈哲,马岩,等.电加热滚筒干燥机的结构设计与运动学分析[J].林产工业. 2018, 45(6):12-15, 20.
[2]王艳萍,朱芳.动、静磨片盘的间隙在热磨机上的重要性[J].林产工业, 2006, 33(4):41-42.
[3]晨夕.中国纤维板产业报告2010[J].中国人造板, 2011(12):39.
[4]陈光伟,花军,贾娜,等.影响热磨机磨片齿形结构设计要素分析[J].林业机械与木工设备, 2008(6):11-13.
[5]许威,花军,陈光伟,等.木材动态力学特性对热磨过程能耗的影响[J].东北林业大学学报, 2015(6):116-119.
[6]Stefanie E, Stanzl-Tschegg. Microstructure and Fracture Mechanical Response of Wood[J]. Int J Fract, 2006,139:495-508.
[7]Ando K, Hirashima Y, Suginara M,et al. Microscopic Processes of Shearing Fracture of Old Wood Examined Using the Acoustic Emission Technique[J]. Journal Wood Science, 2006, 52:483-489.
[8]李艳丽,高秀华,陈淑清.扇块分区热磨机磨片的热应力分析与优化设计[J].林业机械与木工设备, 2008(1):29-31.
[9]史玉梅,高秀华,张小江.圆环分区直齿热磨机磨片的温度场和热变形分析[J].林业机械与木工设备, 2008(7):23-24.
[10]刘龙.磨片间隙和齿倾角对纤维形态影响的数值模拟研究[D].哈尔滨:东北林业大学, 2014:8-25.
[11]陈光伟.热磨法磨片纤维分离机理的模型分析与实验研究[D].哈尔滨:东北林业大学, 2012:6-42.
[12]徐大鹏,陈光伟,张绍群,等.纤维分离过程力学模型的建立及其运动状态分析[J].东北林业大学学报, 2012(1):90-92.
[13]陈光伟,花军,贾娜,等.磨片结构对纤维分离过程中能量转换机理的影响[J].东北林业大学报, 2010(8):109-110.
[14] Dinesh Fernando,GeoffreyDaniel.ExploringScots pine fiber development mechanisms during TMP process[J].Holzforschung, 2008,62:597-607.
[15]郑纲,齐英杰,邹利刚,等.长材刨片机切削过程转矩滑模控制的研究[J].林产工业. 2018, 45(4):30-33.
[16]Berg J E, Gulliksson M E, Gradin P A. On the energy consumption for crack development in fiber wall in disc refining-a micromechanical approach[J]. Holzforschung, 2009, 63:204-210.
[17]Gao Sawang. Specific Surface to Evaluate the Efficiencies of Milling and Pretreatment of Wood for Enzymatic Saccharification[J].Chemical Engineering Science, 2009(3):174-185.
[18]闻邦椿.机械设计手册[M].北京:机械工业出版社, 2010:189-192.
[19]吴哲,陈哲,马岩,等.电加热滚筒干燥机的结构设计与运动学分析[J].林产工业. 2018, 45(6):12-15, 20.