Tea leaf withering system

Abstract

The invention particularly relates to an improvement on a tea leaf withering system, and aims at providing a tea leaf withering system with uniform temperature in a withering space. The tea leaf withering system comprises a hot air furnace, a withering room and a withering conveying structure, wherein the withering room consists of an outer room and an inner room; the bottoms of the outer room and the inner room are connected integrally; a rectangular cavity is formed between the top of the inner room and the outer room; an annular cavity is formed between the four walls of the inner room and the four walls of the outer room; the periphery of the rectangular cavity is communicated with the top of the annular cavity; through holes communicated with the interior of the inner room and the annular cavity are formed in the four walls of the inner room; an air outlet chamber is formed in the center of the inner room, and the bottom and the top of the air outlet chamber are connected with the inner room integrally; through holes communicated with the interior of the inner room and the interior of the air outlet chamber are formed in the side wall of the air outlet chamber; an air outlet communicated with the exterior of the outer room is formed in the bottom of the air outlet chamber; an air inlet pipeline communicated with the rectangular cavity is arranged on one side of the outer room; an air outlet pipe of the hot air furnace is opposite to the air inlet pipeline; a distance is reserved between the air outlet pipe and the air inlet pipeline; a withering conveying structure is positioned between the inner room and the air outlet chamber. The tea leaf withering water loss uniformity is guaranteed.

Description

technical field [0001] The invention belongs to tea processing machinery, in particular to the improvement of the tea withering system. Background technique [0002] Tea withering refers to spreading the picked fresh tea leaves according to a certain thickness, and drying them in the air to make the fresh tea leaves appear wilted. After withering, the water can be properly evaporated, the leaves are soft, the toughness is enhanced, and it is easy to shape. During the withering process, a series of changes occur in fresh tea leaves: the water decreases, and the leaves become soft from brittle and hard, which is easy to knead into strips; the activity of enzymes contained in the leaves is enhanced, which promotes fresh tea leaves such as starch, protein, and insoluble protopectin. The ingredients are decomposed and transformed to produce effective substances such as glucose, amino acids, and bathable pectin that are beneficial to the quality of the tea, and the polyphenols ar...

AI Technical Summary

Problems solved by technology

But this automated withering room still has the following deficiencies: 1. Since the hot blast stove is directly connected to one side of the withering room, the hot air directly entering the withering room is likely to burn the tea leaves on one side near the hot blast stove, and the hot air flows from one side of the withering room to the other. One side, so that the air temperature on both sides of the withering room is uneven, and the air temperature on the side close to the hot blast stove is always higher than the temperature on the other side

2. Since the conveyor belt of the withering room is transported in one direction from top to bottom, when the tea leaves are covered with the conveyor belt in the withering room, the conveying will stop and the withering process will begin. During the withering process, the tea leaves are still, so that the withering temperature of the tea leaves in the lower layer is always lower than that of the tea leaves in the upper layer, so that the tea leaves in the whole withering room will wither and lose water unevenly, thus affecting the quality of the tea leaves

3. The tea leaves are in a static state during the whole withering process, which further affects the effect of withering

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