Multi-channel air supplement device for dryer cold room

Abstract

The invention relates to a multi-channel air supplement device for a dryer cold room, and belongs to the technical field of tobacco leaf redrying cooling air supplement. The multi-channel air supplement device of the dryer cold room comprises a main air supply device used for conveying hot air and side face air supplement devices used for supplementing cold air to the main air supply device, the side face air supplement devices are installed on any one or more side faces of the main air supply device, the main air supply device comprises a hot air inlet pipe, a main air outlet pipe and a first air door, and each side face air supplement device comprises an air supplement box, an outdoor air supplement pipe, a hot air return pipe, a second air door, a third air door, a fourth air door and a fifth air door. The multi-channel device can meet the air supplementing requirement under different outdoor air temperature conditions, the temperature in the redryer cold room is kept stable, the tobacco leaf cooling and moisture regaining quality is guaranteed, water and steam energy consumption in the moisture regaining process is reduced, and the device is simple in structure, convenient to install and maintain and convenient and fast to operate.

Description

technical field [0001] The invention relates to a multi-channel air supply device for a cold room of a roasting machine, which belongs to the technical field of air supply for re-roasting cooling of tobacco leaves. Background technique [0002] As the upstream process of the cigarette industry, threshing and redrying homogenization processing is of great significance to the stability of the quality of tobacco products. The tobacco leaves after the threshing and redrying processes need to be cooled in a cold room. The main purpose is to further Reduce the excessive heat energy generated in the leaves after drying, and reduce the temperature of the leaves to the range required by the process by cooling, which will help improve the processing capacity of the subsequent tobacco leaf rehydration process, thereby improving the resistance of the tobacco leaves to crushing. [0003] The stability of the temperature in the cold room is an important factor determining the moisture reg...

AI Technical Summary

Problems solved by technology

[0003] The stability of the temperature in the cold room is an important factor determining the moisture regain of the tobacco leaves. Too high or too low a temperature is not conducive to the moisture regain of the tobacco leaves. Too low a temperature (below 20°C) will easily lead to a low temperature at the tail of the machine and affect the stretchability of the tobacco leaves. Excessively high temperature (38-40°C) will easily lead to rapid loss of moisture in the tobacco leaves, increasing the amount of crushing during the packaging process, and making it difficult for the tobacco leaves to regain moisture

However, under extreme weather conditions such as winter night or summer noon, the outdoor temperature may be as low as 0°C or as high as 35-40°C, making it difficult to raise or lower the temperature of the cold room. The supplementary air pipeline and the hot air return pipeline are located outside the valve, resulting in a low or high temperature of the outside cold airflow mixed with the hot airflow, which is difficult to control. If the valve is closed, the entry of outdoor airflow will be blocked, and it will also affect the If the valve is opened, hot and cold air will enter at the same time, making it difficult to control the temperature of the cold room, which will affect the operation quality of the equipment and the moisture quality of the tobacco leaves; in addition, the unstable temperature of the cold room will also cause the Increase of energy consumption of water and steam during resurgence

Images