Control Means for Equalizing Discharge Flow of Silo Type Tobacco Feeder

It usually takes long time for discharging head and tail tobacco from a silo, the control means for equalizing discharge flow of silo type tobacco feeder was designed with sectional control method. At the head tobacco discharge stage, the elevating belt ran intermittently controlled by PLC in order to maintain a thicker tobacco layer on the elevating belt and increase tobacco feeding capacity to the metering tube. At the silo emptying stage, the photoelectric tube in silo was relocated so that it could tell the tail tobacco ahead of time, then accelerated silo's bottom belt and reversed the rotation of the picker roller. The results of application showed that the improvement solved the problem of insufficient head tobacco discharge flow, and the downstream equipment was properly fed. The duration of tail tobacco reduced from almost 10 minutes to 1 minute, tobacco flow was stably controlled.