Internal cross-flow type tobacco drying machine

Abstract

The invention discloses an internal cross-flow type tobacco drying machine. The drying machine comprises a barrel, a feeding end, a discharging end and a drying device for air-drying tobacco, wherein the feeding end is located on one side of the barrel, and the discharging end is located on the other side of the barrel; the drying device is a central pipe which penetrates through the barrel and allows drying air flow to pass, branch pipes for discharging drying gas are evenly distributed at the lower part of the central pipe, and the branch pipes are close to tobacco at the bottom of the barrel to play a drying role. The drying machine can leaves, cut tobacco, tobacco stems and cut steams in a cut tobacco production line, the drying gas is sprayed on the tobacco at the bottom of the barrel from the multiple branch pipes at the lower part of the central pipe, so that the tobacco is moved violently, full contact between the drying gas and the tobacco is guaranteed, the drying speed is remarkably increased, and the drying time is remarkably shortened.

Description

technical field [0001] The invention belongs to the field of tobacco special equipment, and relates to an internal through-flow tobacco dryer, in particular to an internal through-flow dryer in a tobacco shred production line, which can dry leaves, shredded leaves and tobacco stems in the tobacco shred production line. Dry with stalks. Background technique [0002] Drum drying equipment is one of the important equipments for cigarette production in the tobacco industry at home and abroad. The dryer mainly adopts composite drying technology, through conduction, forced convection and other heating methods, the materials after high temperature and high humidity treatment are dried quickly at high temperature to reach the moisture content required by the process. [0003] Due to the use of conduction, forced convection and other heating methods to dry the materials in the existing cylinder drying equipment, the temperature requirements of the cylinder body and hot air are relat...

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Problems solved by technology

[0003] Due to the use of conduction, forced convection and other heating methods to dry the materials in the existing cylinder drying equipment, the temperature requirements of the cylinder body and hot air are relatively high, the drying speed of the material is slow, the drying time is long, and if the cylinder volume is large, it will be due to the use of The two drying modes of conduction and convection work together, and the control is more complicated

In addition, due to the large thermal inertia of the drying cylinder and the hot air system of the cylinder drying equipment, it takes a long time for the equipment to start up, warm up and cool down, which reduces the work efficiency and causes inconvenience to the production scheduling of cigarette enterprises; and with the increase of production auxiliary time Extended, steam consumption and electricity consumption will also increase, resulting in a large waste of energy

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