Volume control device for improving processability of microwave expansion tobacco stems

Abstract

The invention discloses a volume control device for improving the processability of microwave expansion tobacco stems, aiming at providing the volume control device for improving the processability of the microwave expansion tobacco stems, which is simple in structure. The device comprises a barrel, a bracket, a rotating shaft, a helical blade, a steam jacket, a drain valve, a heat preservation layer, a compressed air pipeline and a plurality of compressed air nozzles, wherein a feeding opening is formed in one end of the barrel, a discharging opening is formed in the other end of the barrel, the bracket is used for supporting the barrel, the rotating shaft is rotatably arranged in the barrel, the helical blade is fixedly arranged on the rotating shaft, the steam jacket sleeves the outer wall of the barrel, the drain valve is arranged on the steam jacket, the heat preservation layer is arranged on the outer wall of the steam jacket, the compressed air pipeline penetrates into the barrel, and the plurality of compressed air nozzles are located in the barrel and communicate with the compressed air pipeline; a feeding cross valve is arranged on the feeding opening of the barrel, a discharging cross valve is arranged on the discharging opening of the barrel, and a pressure gauge and a humidity eliminating hole are arranged on the barrel. With the volume control device, the volume shrinkage degree of the microwave expansion tobacco stems after moisture regaining treatment can be greatly reduced, and thus the subsequent slicing processing is facilitated.

Description

technical field [0001] The invention relates to the technical field of tobacco processing machinery, in particular to a volume control device for improving the processability of microwave-expanded tobacco stems. Background technique [0002] The microwave expansion and filamentary forming technology of tobacco stems is an emerging tobacco stem processing technology in recent years. It uses microwaves to instantly heat and evaporate the moisture in the tissue structure of tobacco stems to make them expand. After the tobacco stem is expanded, its tissue structure becomes loose, and its volume is significantly larger than that before expansion. The subsequent rehydration process can increase the filamentous forming rate of the cut stem, reduce crushing, and increase the yield. The decomposition of cell wall substances and the increase of aroma components improve the sensory quality. [0003] In recent years, with the continuous improvement of microwave expansion of tobacco ste...

AI Technical Summary

Problems solved by technology

The main problems in the shaping of the expansion stalks in this patent are: ①Forcibly air-cool the expansion stalks during the transportation process, the required air volume is large, the noise and energy consumption are large; ②The expansion stalks are forced to air-cool only by wind force Shaping mainly acts on the surface of the expansion stem. In actual production, the heat dissipation of the expansion stem is slow, and the expansion stem shrinks significantly after regaining moisture and has poor uniformity.

The main problems of the expansion stems used in the two patents are: ①The capacity of the pressure vessel in the current production is limited, and the batch material processing time is long, and the microwave expansion equipment has a large capacity, which makes the subsequent production of the expansion stems discontinuous. The application of microwave-expanded tobacco stems is restricted; ②A pressure vessel is used to shape the expanded stems. Due to the high pressure and long processing time, the expanded stems are often over-shaped, and the expanded stems are too elastic and the outer skin layer is easy to fall off , affecting the subsequent processing of the expanded stem

However, microwave-expanded tobacco stems still have water absorption and shrinkage during natural storage. After the expanded tobacco stems regain moisture, the average expansion shrinks by more than 50%, and the volume changes are uneven, which affects the subsequent slice yield and uniformity; Stems need to occupy a lot of storage space, increase production costs, and are not conducive to continuous processing of expanded tobacco stems

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