Method for improving size uniformity of leaves after threshing

Abstract

The invention discloses a method for improving size uniformity of leaves after threshing. Winnowing frequency of a winnowing machine can be improved in a mode of combining suspension winnowing and airsuction winnowing so as to improve the amount of winnowing blades; leaves which are ultra-large in tobacco stems are separated out and tobacco stem separation is conducted; leaves which are obtainedfrom separation undergo secondary winnowing and threshing; leaf stems are independently moistened and shredded; the generation of non-smoke substances in a tobacco leaf processing course is controlled, so that a refined requirement of cigarette enterprises on lamina purity is satisfied, and in addition, a processing flow is improved and production cost is reduced; and the leaves undergo threshingin a classified mode, so that a broken leaf rate is reduced and a medium-lamina rate is improved, and subsequently, the uniformity of the tobacco leaves is controlled so as to bring about benefits forsubsequent processing; and the method for improving uniformity of the leaves provided by the invention is obvious in effect and is capable of effectively improving threshing efficiency and improvingthe quality of the finished lamina; therefore, the method is worthy of popularizing.

Description

technical field [0001] The invention relates to the technical field of tobacco processing, in particular to a method for improving the size uniformity of leaves after threshing. Background technique [0002] In the production of threshing and redrying, the sheet shape of threshed tobacco directly affects the quality of tobacco, and is also one of the main factors affecting the filling capacity of rolled tobacco. In recent years, domestic and foreign studies on the relationship between the structure of shredded tobacco and the shape of tobacco sheets that meet the needs of high-speed cigarette rolling machines have shown that when the size of tobacco sheets is larger than 35 mm, the increase in filling capacity is not obvious, and it will affect the working efficiency of cigarette machines; When the size is less than 10 mm, the filling capacity of shredded tobacco drops sharply. Therefore, the optimum range of the size of the tobacco is 10-35mm, and the proportion of the cig...

AI Technical Summary

Problems solved by technology

However, at present, the post-threshing lamina produced by the threshing and re-baking line generally has problems such as a high rate of large sheets and unreasonable sheet shape structure, which leads to a high shrinkage rate of the post-cured lamina and affects the pass rate of large and medium-sized sheets of finished tobacco. , so there is a need for a leaf threshing method that improves the qualified rate of the middle slice after threshing, reduces the amount of small leaves, and reduces the amount of large leaves, in order to improve the quality of tobacco