摘要
为了研究我国煤炭港口两类常用的振动给料机的性能特点,从颗粒在振动床面上的受力分析入手,获得物料滑行、跳跃和静止的始终分界点,利用解析及几何方法,求出物料运动平均速度;根据给料机的实际结构尺寸,确定了最大给料粒度、最大给料量、几何安息角和功率效率、面积效率、体积效率。研究结果表明,在振动强度相同条件下,振动给料机床面上颗粒速度大约为活化给料机上颗粒速度的2倍之多;振动给料机的入料粒度、料层厚度、给料量均大于活化给料机,对流动性好的物料前者的自锁能力大于后者;振动给料机的功率效率、体积效率、面积效率和投资效率都比活化给料机高。
In order to study the performance characteristics of two common vibrating feeders used in coal ports of China,we analyzed the particle＇s force on the vibrating bed,and obtained the demarcation point of skidding,jumping and quiescence. By using analytical and geometric methods, and according to the actual structure size of the feeder, the maximum feed particle size,the maximum feeding amount,geometric angle of rest and power efficiency,area efficiency and volumetric efficiency were found out. The results show that the particle＇s velocity on the surface of the vibrating feeder is about twice as much as the particle on the activating feeder under the same condition of vibration intensity. The feeding particle size, material thickness, feeding amount are greater than the activating feeder, for the materials with good liquidity,self-locking ability of vibrating feeder is greater; the power efficiency,volumetric efficiency,area efficiency and investment efficiency of vibrating feeder are better than the activating feeder.
作者
史伟彬
吴蛟
于驰
安站东
SHI Wei-bin;WU Jiao;YU Chi;AN Zhan-dong(Hebei Port Group Qinhuangdao Port Co.,Ltd.,Qinhuangdao 066000,China;School of Chemical and Environmental Engineering,China University of Mining and Technology（Beijing）,Beijing 100083,China;Shanxi Yangquan Coalition Electromechanical Department,Yangquan 045000,China)
出处
《煤炭工程》
北大核心
2018年第9期145-149,共5页
Coal Engineering
关键词
振动给料机
受力分析
物料速度
性能参数
vibrating feeders
force analysis
material speed
performance parameters
