成型机甘油供给系统设计

Design of Glycerine Supply System for Molding Machine

摘要: 玉溪卷烟厂就地技术改造项目需对卷包一车间14 + 2 (预留工位)台成型机及卷包三车间8 + 2 (预留工位)台成型机配套滤嘴棒成型机甘油供给系统，主要由甘油储存罐系统、管道系统及电气控制系统组成。卷包一车间甘油管道环路的标高为6.8 m，卷包三车间甘油管道环路的标高为7.5 m。目前卷包车间的甘油供给系统的动力装置只有一套，设备运行可靠性差，同时供给系统缺少计量和甘油回收装置，本文通过环路设计、将动力装置设计成一用一备，在甘油出口位置增加流量计，同时在甘油供给系统中增加一个空压机，当设备长时间停机时，通过空压机产生压缩空气经环路进行回收。同时通过离心泵出口端的压力传感器，以及变频器控制离心泵的启停，完成甘油的压力输送。储罐配置超声波液位计、音叉液位计及磁翻板液位计，储罐内的甘油余量需在操控屏上实时显示，并具备极限液位报警功能，降低甘油供给系统管理的劳动强度。通过以上改造实现甘油暂存、压力供给、管道排空、甘油计量、实时监控、故障统计及供油设备自动化控制等功能，满足滤嘴棒车间成型机生产要求。

Abstract: The local technical renovation project of Yuxi Cigarette Factory requires the glycerol supply system of the 14 + 2 (reserved station) forming machine of the first workshop and the filter bar forming machine of the 8 + 2 (reserved station) of the third workshop, which is mainly composed of the glycerol storage tank system, pipeline system and electrical control system. The elevation of the glycerol pipe loop in the first workshop is 6.8 m, and the elevation of the glycerol pipe loop in the third workshop is 7.5 m. At present, there is only one power unit of the glycerol supply system in the wrapping workshop, which has poor operation reliability, and the supply system lacks metering and glycerol recovery devices. In this paper, through loop design, the power unit is designed as one use and one standby, the flow meter is added at the glycerol outlet position, and an air compressor is added to the glycerol supply system. When the equipment is shut down for a long time, the power unit is designed as follows: The compressed air produced by the air compressor is recycled through the loop. At the same time, the pressure sensor at the outlet of the centrifugal pump and the frequency converter control the start and stop of the centrifugal pump to complete the pressure transport of glycerol. The storage tank is equipped with ultrasonic liquid level meter, tuning fork liquid level meter and magnetic flip plate liquid level meter. The glycerol surplus in the storage tank should be displayed on the control screen in real time, and the limit liquid level alarm function should be provided to reduce the labor intensity of glycerol supply system management. Through the above transformation, the functions of glycerin temporary storage, pressure supply, pipeline empting, glycerin measurement and automatic control of oil supply equipment are realized to meet the production requirements of filter bar workshop forming machine.