Method for controlling height of material layer of bin of two-sided jet-type charging machine

Abstract

The invention discloses a method for controlling the height of a material layer of a bin of a two-sided jet-type charging machine. The method comprises the following steps: respectively placing a metering type belt weigher at each of a feeding position and a discharging position of the two-sided jet-type charging machine, weighing a fed material and a discharged material to calculate a weight accumulation error of the two belt weighers at the same moment to calculate the value of the weight of a material accumulated in a charging bin at the moment, then calculating the value of the volume of the material according to a volume weight of the material, finally dividing a sectional area of the bin to obtain an accumulation height h of the current material; and comparing the h with required height intervals h1 and h2, and controlling the conveyor belt speed of a variable frequency speed control discharging conveying machine by adopting an incremental PID algorithm. The control method can be used for ensuring that the accumulation height of the material in the bin is basically constant.

Description

technical field [0001] The invention relates to the material control of the tobacco sheet feeder in the tobacco shred production line, in particular to a method for accurately controlling the material accumulation height (by means of weighing) in the silo of the thin-layer material double-sided injection type feeder systems and methods. technical background [0002] In the production process of cigarette shreds, tobacco sheet feeding is an important process. Most of the currently used feeding equipment is drum-type feeding. This type of equipment has certain deficiencies in feeding uniformity, effectiveness and feeding accuracy. During the feeding process, the smoke sheet is prone to breakage, and the single-point injection of the feed liquid injection point leads to large consumption of the feed liquid and poor uniformity. In this case, a double-sided injection feeder for thin-layer materials was born. Thin-layer material double-sided injection feeder relies on multiple se...

AI Technical Summary

Problems solved by technology

However, the detection of the height of the smoke sheet material layer in the silo cannot be realized if the traditional photocell detection method is used.

Not only is the feed liquid has a certain viscosity, which causes the smoke sheets and feed liquid to easily stick to the silo wall during processing, but also the mist and floating tobacco leaves formed by the feed liquid in the silo during feeding make the photoelectric cell unable to work normally.

However, the height of the smoke sheet material layer in the silo has a decisive influence on the vacuuming effect at the bottom of the silo: the height of the smoke sheet material layer is too low, and the atomized feed liquid microbeads will penetrate the tobacco leaves without being completely filtered by the smoke sheet layer. The air is taken away, which affects the utilization rate of the feed liquid and causes waste of the feed liquid; the height of the smoke sheet material layer is too high, the vacuum damping is too large, the feed liquid beads cannot penetrate the smoke sheet layer, and a large number of feed liquid beads adhere On the wall of the silo and the surface layer of smoke sheets, the effect of feeding the smoke sheets is more unstable and uneven, and even causes blockage, affecting production

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