大型抛射筛机械结构及运动特性

• 作 者: 孙刚 阙松涛 李英俊 孙微 岳艺明 张玉金
• 机 构: 北京科技大学资源工程学院,辽宁煤炭工业管理局,徐州筛分机械制造公司
• 出 处: 煤矿设计
• 发表日期: 1999年02期
• 关键词: 物料运动 筛分机械 筛箱 机械结构 粘性物料 机械机构 筛丝 细粒级 筛分效率 应力状态

本文介绍了大型抛射筛基本机械机构和筛面运动特性分析，大型抛射筛仅筛面振动，筛箱和机架不振动，筛箱在低应力状态下工作，使筛分机械大型化成为现实。指出对于潮湿细粒级粘性物料的筛分应采用大振幅、大振动强度和较低频率的工艺参数。特制的各组筛面对称摆动运动使筛子动力学系统得以平衡，筛子工作时对厂房、地基不产生振动。

In this paper, the basic mechanical mechanism of large projectile screen and the analysis of the movement characteristics of the screen surface are introduced. Only the screen surface vibration of the large projectile screen, the screen box and the frame do not vibrate, the screen box works in the low stress state, making the screening machine become larger. It is pointed out that for the screening of wet fine-grained viscous materials, the process parameters of large amplitude, large vibration intensity and lower frequency should be adopted. Specially made of each group of sieve surface swing symmetry movement to sieve dynamic system to balance the sieve work on the plant, the foundation does not produce vibration.