Low-oxygen low-pressure drum type cut tobacco drying machine and cut tobacco drying method

Abstract

The invention provides a low-oxygen low-pressure drum type cut tobacco drying machine. The cut tobacco drying machine comprises a support frame, an electric heating cut tobacco drying drum and a drum transmission mechanism, and is characterized in that a feed gas lock is arranged at a feed port of a feed chamber of the cut tobacco drying drum, a discharge gas lock is arranged at a discharge port of a discharge chamber of the cut tobacco drying drum, an air extracting pipe for connecting with an air extracting device is arranged on the discharge chamber, an air extracting end of the air extracting pipe leads to an inner cavity of the cut tobacco drying drum, and an air pressure detection device is arranged on the air extracting pipe; and the air extracting device and the air extracting pipe are used for performing air extraction on the interior of the electric heating cut tobacco drying drum, and an electric heating control system is used for controlling and keeping the air pressure in the electric heating cut tobacco drying drum to be 0.2-0.5 standard atmospheric pressure, and the drum wall temperature of the heating drum to be 60-90 DEG C. The low-oxygen low-pressure drum type cut tobacco drying machine provided by the invention is simple in structure and convenient in operation and can achieve drying of cut tobaccos under relatively low strength; and meanwhile, the loss caused by an oxidation reaction of small-molecule aroma components during cut tobacco drying is reduced, and the small-molecule aroma components inside tobacco leaves are maintained to the maximum extent.

Description

technical field [0001] The invention relates to the technical field of cigarette processing equipment, in particular to a low-oxygen and low-pressure drum-type silk drying machine and a silk drying method. Background technique [0002] In the prior art, the conventional drum drying equipment for shredded leaves and cut stems mainly adopts equipment such as two-stage shred drying machines, airflow drying, fluidized bed drying, etc., relying on the heating of shredded leaves and cut stems to make the moisture It becomes a gaseous state and separates from shredded leaves and stems. Therefore, the processing intensity is generally high during the production process. The temperature of the wall of the drum drying drum and the temperature of the fluidized bed drying air flow are basically above 120°C, and the highest temperature of the air drying hot air even reaches 280°C. Above, the processing intensity is high, and the loss of aroma-causing chemical components in shredded leave...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, the conventional drum drying equipment for shredded leaves and cut stems mainly adopts equipment such as two-stage shred drying machines, airflow drying, fluidized bed drying, etc., relying on the heating of shredded leaves and cut stems to make the moisture It becomes a gaseous state and separates from shredded leaves and stems. Therefore, the processing intensity is generally high during the production process. The temperature of the wall of the drum drying drum and the temperature of the fluidized bed drying air flow are basically above 120°C, and the highest temperature of the air drying hot air even reaches 280°C. Above, the processing intensity is high, and the loss of aroma-causing chemical components in shredded leaves is large, especially the loss of small-molecule aroma-causing chemical components that have a significant positive impact on the quality of cigarettes is more obvious. For cigarettes, especially high-end cigarette products, the selected Tobacco raw materials are of high quality and have few defects. High-intensity processing often leads to a reduction in the quality of shredded tobacco. Therefore, reducing the processing intensity of the shredded leaf drying process is an urgent demand for high-end cigarettes.

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