Continuous extraction method and device of papermaking reconstituted tobacco

Abstract

The invention discloses a continuous extraction method and device of papermaking reconstituted tobacco. The continuous extraction device of the papermaking reconstituted tobacco is characterized by comprising a mixer, a first spiral conveyor, a downflow extraction tower, a medium-consistency pulp pump, a press master, a fluffer and a second spiral conveyor, wherein the mixer, the first spiral conveyor, the downflow extraction tower and the medium-consistency pulp pump are orderly connected, a material discharge hole of the medium-consistency pulp pump is connected with a material feeding hole of the press master, a concentrated material discharge hole of the press master is connected with the fluffer, the fluffer is connected with the second spiral conveyor, a material discharge hole of the second spiral conveyor is connected to the next level of extraction section or pulping section, and an extract liquor discharge hole of the press master is connected to an extract liquor feeding hole of the mixer in a concentration section of the extract liquor or the last extraction section. The continuous extraction device of the papermaking reconstituted tobacco, disclosed by the invention, has the advantages of simple operation, good production flexibility, capability of continuously producing, low water consumption and high extraction rate.

Description

technical field [0001] The invention relates to a continuous extraction method and device for paper-making tobacco flakes, and belongs to the technical field of paper-making tobacco flakes production. Background technique [0002] Paper-making tobacco sheet has the functions of realizing waste utilization, reducing the loss of tobacco leaves, and reducing the tar content of cigarettes. It is a tobacco manufacturing technology emerging in China at present. Paper-making tobacco flakes are generally manufactured using a two-step process. The main process includes: raw material treatment, leaching and extraction, concentration and blending, slurry preparation, papermaking, coating, and finished product treatment. Extraction Extraction is an important process in the production of reconstituted tobacco sheet by papermaking method. Tobacco stems, tobacco powder and shredded tobacco leaves are mixed and soaked with warm water at 45-85°C in a certain proportion. After fully mixed an...

AI Technical Summary

Problems solved by technology

The stirring blade of the stirrer in the leaching tank is installed on the vertical shaft. During the soaking process, because the stirring blade of the stirrer rotates and stirs on a horizontal plane, the material and water cannot be fully stirred and mixed evenly, and some materials are suspended on the water surface, which cannot To achieve the purpose of full immersion, so that the various active ingredients in the material cannot be fully extracted

The screw conveyor for discharging is a one-way spiral structure, which makes the material in the dead zone in the tank unclean, reduces the production efficiency, and also affects the formula ratio of the process

The tank type equipment occupies a large area, the utilization rate of the equipment is low, and continuous production cannot be carried out

[0004] At present, there is a continuous extraction equipment, which adopts a continuous spiral structure with small holes. The equipment is bulky, and the holes on the spiral blades are easy to block, and the equipment is difficult to clean. When feeding, the material will float on the water surface, which increases Feeding is difficult, which affects the extraction efficiency, the material cannot be squeezed dry during the extraction process, it is difficult to achieve countercurrent extraction, and the water consumption is large

[0005] Chinese patent CN1836588A discloses a continuous extracting and drying equipment for paper-making tobacco flakes. It adopts a continuous segmented spiral structure. Because the cylinder is too long, it is easy to cause faults such as too dense and too hard plug, poor feeding, and slipping of the screw shaft.

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