Constant-temperature leaf wetting method for tobacco

Abstract

The invention provides a constant-temperature leaf wetting method for tobacco. The problems of low quality and availability of redrying finished product cigarette strips are solved. A leaf wetting cylinder, a steam device and a circulation hot air device are involved. The leaf wetting method comprises the following steps that S1, the circulation hot air device conveys hot air into the leaf wettingcylinder; S2, steam is set to be conveyed into the leaf wetting cylinder; S3, tobacco is conveyed into the leaf wetting cylinder; S4, leaf wetting is conducted for the first time; S5, the tobacco isoutput through the leaf wetting cylinder; S6, leaf wetting is conducted for the second time; S7, the tobacco is output to the leaf wetting cylinder, and the leaf wetting process is completed. According to the method, during specific usage, low-pressure steam is adopted for leaf wetting, the hot air is added at the same time, dispersion of moisture of a saturated steam layer towards the interior ofthe tobacco can be accelerated, it is effectively guaranteed that the moisture in the tobacco is evenly distributed, local moisture accumulation cannot occur, and the problems of low quality and availability of existing redrying finished product cigarette strips are solved.

Description

technical field [0001] The invention relates to the technical field of threshing and redrying of cigarette leaves, in particular to a method for moistening tobacco leaves at a constant temperature. Background technique [0002] Leaf moistening is an important basic link in the threshing and redrying process. At present, the leaf moistening method in threshing and redrying mainly adopts the method of steam moistening. The leaf moistening process includes a leaf moistening cylinder, which is connected with a steam device. The device inputs steam into the leaf moistening cylinder to complete the leaf moistening; if the steam pressure is too low (less than 0.5MPa), the leaf moistening efficiency is low, and the leaf moistening effect is not good; if the steam pressure is too high (higher than 0.6MPa), then It is easy to cause scalding of tobacco leaves. At present, in order to improve the efficiency of leaf moistening, the steam pressure is set to 0.5-0.7MPa. At the same time, i...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of poor quality and low usability of rebaked finished tobacco sheets, the present invention provides a method for moistening tobacco leaves at a constant temperature, using full steam to moisten leaves, effectively ensuring the uniform distribution of moisture in tobacco leaves after moistening, and further increasing the flexibility of tobacco leaves To make the tobacco leaves more loose and stretch, and meet the technical requirements of threshing, thereby further improving the quality of threshing leaves, the quality of finished tobacco sheets and industrial usability

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