High-yield cut tobacco drying method

Abstract

The invention relates to the technical field of cut tobacco making method, in particular to a high-yield cut tobacco drying method. The high-yield cut tobacco drying method solves the technical problems that in the prior art, due to the fact that when production starts, the drying capacity of a cut tobacco drier is much larger that the actual drying capacity needed by cut tobacco, much dry-head cut tobacco is generated, and the quality of the cut tobacco is poor. The high-yield cut tobacco drying method comprises the steps that when production starts, cut tobacco is accumulated on a conveyer belt in front of an inlet of a cut tobacco dryer, so that the instantaneous flow rate of the cut tobacco entering a material head of the cut tobacco dryer is increased; a material head water feeding delay correcting function is started in a super casing drum at a front-end procedure of the cut tobacco machine, the moisture ratio of the material head is increased instantly, the duration of the moisture ratio is controlled within reasonable duration, and the moisture ratio of the material head reaches a high value instantly. By the adoption of the high-yield cut tobacco drying method, the quality of the cut tobacco can be easily improved, and the amount of dry-head cut tobacco at an outlet of the tube-sheet cut tobacco drier is reduced.

Description

technical field [0001] The invention relates to the field of tobacco, in particular to a method for drying shredded leaves with a high qualified rate. Background technique [0002] Dry shredded ends refer to materials with a moisture content of less than 10% at the outlet of shredded shreds at the beginning of production. The silk drying process is a key control process in the silk making process. The tube plate drying machine is the most widely used and traditional tobacco leaf drying method at present. It can dry the leaf silk, reduce the moisture content of the leaf silk, and achieve Homogenization and coordination of sensory and physical qualities of leaf silk. The drying of shredded leaves is mainly realized by controlling the temperature of the cylinder wall, the temperature of the hot air, and the opening of the moisture discharge. According to the requirements of different technical indicators for different products, the moisture content of the exported shredded le...

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Problems solved by technology

In this process, it is necessary to adjust and optimize when to start to increase the temperature of the cylinder wall and how long it takes to reach the set working cylinder temperature. These time control parameters can be adjusted and optimized so that the system can quickly enter a stable state. As the number of entering drums increases, it is necessary to increase the dehydration capacity of the silk dryer, that is, the temperature of the cylinder wall. If the temperature of the cylinder wall rises too early and too fast, the number of leaves with too dry moisture in the outlet silk will increase. If If the temperature of the cylinder wall rises too late or too slowly, the water content of the outlet shreds will increase. The above two situations will prolong the time for stably controlling the water content of the outlet shreds. Although the system is automatically controlled, it will At the beginning of production, the moisture content of the shredded leaves is not detected, and the system is in an open-loop control state. When the moisture content of the shredded blades is detected and enters automatic control, if the deviation from the set moisture content value is large, the temperature and rotational speed of the drum will be adjusted. It takes a long time of manual adjustment to make the moisture content at the outlet of the dryer reach the process setting value, and there will be too many dried shreds or shreds with a moisture content exceeding the process requirements

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