物料流量控制系统的改进

Improvement of Tobacco Flow Control System

为解决烟草制丝线物料流量波动大、经常出现断流的问题,利用联动调速技术对物料流量控制系统的提升机齿板、计量管和控制程序进行了改进。将提升机齿板上的耙钉长度由15 cm减少为10 cm,提升机耙钉与匀料辊之间的垂直距离调整为8 mm,避免由于耙齿过长使输送烟丝产生不均,并保持流量稳定;在计量管内部增加一个辅助检测腔,避免计量管内气流的反作用,防止光电管误动作使皮带秤出现断料现象;运用联动调速原理对提升机和皮带秤之间进行匹配调速控制,使物料流量受控可调。应用效果表明,改进后物料流量波动平均值由0.9%降低到0.5%,断流次数由平均每班15次降低到每月10次以下,有效保证了烟草在制品加工的稳定性和连续性,减少了维修强度。

Aiming at the large fluctuation and frequent interruption of tobacco flow in primary processing line, the spiker plate in elevator, metering tube and control program were improved with speed regulation linkage technology. The length of spikers on the spiker plates was shortened from 15 to 10 cm and the vertical distance between the spikers and picker roller was adjusted to 8 mm to avoid interrupted tobacco conveying caused by long spikers and maintain a steady flow. An auxiliary detection chamber was added inside the metering tube to counteract air current in metering tube and prevent misoperation of photoelectric cell. Speed regulation linkage technology was adopted to match the speed of the elevator with that of the belt weigher and adjust tobacco flow. The results of application showed that, the average fluctuation of tobacco flow reduced from 0.9% to 0.5%, the frequency of tobacco interruption decreased from 15 times per shift to lower than 10 times per month.