High-efficiency hot-air fixating machine

Abstract

The invention provides a high-efficiency hot-air fixating machine. The high-efficiency hot-air fixating machine comprises a cylinder, as well as a shell, a coil tube, an air inlet, an air outlet, a water discharge chassis, a turntable, a water diversion pipe, water outlet holes, a truncation layer and a cylinder cover; the coil tube is installed on a surface of the cylinder; the air inlet is located at an upper part of the cylinder so as to allow steam to enter; the steam flows through the coil tube, and is then discharged via the air outlet located at an lower part of the cylinder; the waterdischarge chassis is located at a bottom of the cylinder, and is distributed with a plurality of water outlet holes on the surface; the water discharge chassis is connected to an upper part of the turntable; the cylinder is driven to rotate when the turntable rotates; the water diversion pipe is connected to a lower part of the turntable, and is used for discharging the water from the water discharge chassis; truncation position of the steam in the truncation layer is limited when the steam is introduced into or drawn off by the truncation layer; and the cylinder and the shell are completely covered by the cylinder cover. According to the high-efficiency hot-air fixating machine provided by the invention, the coil tube is heated by the steam so as to heat the cylinder to produce hot air; and thus, the hot-air fixating machine is high in fixation efficiency, relatively infrequent in causing of dried edges of the fixated leaves, and greatly reduced in broken tea leaf rate.

Description

technical field [0001] The invention belongs to the field of tea production, and in particular relates to a high-efficiency hot air degreening machine. Background technique [0002] The current methods of fixing greens include coal heating rolling pots, tea steam fixing machines and tea hot air fixing machines. [0003] Coal-heated rolling pot mainly relies on the short-term contact heat transfer between the tea leaves and the pot wall to complete the greening of the tea leaves. Since the time for each piece of tea to contact the pot wall is uncontrollable, each piece of tea leaves is different from green and tender. The edge and center of each leaf are different. Different, many leaves have burnt edges, and the finished tea has a burnt taste and low quality. [0004] The steam greening machine mainly relies on the convective heat exchange between steam and tea leaves for heating and greening, which solves the problem of uneven greening of leaves to a certain extent. Becaus...

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Problems solved by technology

[0004] The steam greening machine mainly relies on the convective heat exchange between steam and tea leaves for heating and greening, which solves the problem of uneven greening of leaves to a certain extent. Because tea leaves not only have leaves, but also bud tips, and the thickness of bud tips is thicker than that of leaves. During the hot time, the greening of the leaves has been completely killed, but the bud tips have not been completely killed, especially for the bud tips, especially the solid bud tips in early spring. The tea leaves have a grassy smell after the greening

Due to the forced convection heat exchange, the moisture is naturally discharged, so it is easy to retain the hot and humid gas, which will have a negative impact on the quality of the tea, and it is easy to cause the tea leaves to turn yellow after greening.

[0005] The hot air degreening machine mainly relies on the convective heat exchange between the hot air and the tea leaves to heat the degreening machine. The effect of steam degreening is similar to that of steam degreening machine, but because the heat exchange material does not undergo phase change, the heating effect is not as obvious as that of steam heating, and it requires more heat than steam. Uneconomical

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