Composite withering equipment for black tea and composite withering method thereof

Abstract

The invention relates to composite withering equipment for black tea and a composite withering method thereof. The composite withering equipment comprises a rack, a withering box and placement frames, at least two sets of tea leaf placement frames are arranged on the placement frame, overturning assemblies are arranged in the placement frames in a sleeved mode, a hot air conveying assembly and a cold air conveying assembly are arranged on the two sides outside the withering box respectively, and an illumination assembly is arranged at the top in the withering box; a movable feeding and receiving device is arranged outside the withering box, tea leaves are spread in an overturning spreading frame, overturning rocking teeth are rotated by an overturning assembly to rock the tea leaves, mechanical friction can be performed on the tea leaves, the tea leaves can be uniformly spread, and the purposes of rocking the tea leaves and withering are achieved; in the withering process, the hot air conveying assembly and the cold air conveying assembly are used for adjusting the temperature in the withering box, and the illumination assembly is used for illumination during withering; through reasonable temperature adjustment, rocking, illumination withering, overturning and material feeding and taking operations, the purpose of automatic composite withering is achieved, peculiar smells in the tea leaves can be removed, the fresh degree is increased, and the theaflavin content of the black tea is effectively increased.

Description

technical field [0001] The invention relates to the technical field of black tea production, in particular to a compound withering equipment for black tea and a compound withering method thereof. Background technique [0002] Black tea withering is one of the important steps in the production process of black tea. It refers to spreading evenly under certain temperature and humidity conditions, so that the activity of enzymes in fresh leaves can be moderately promoted, and the contained substances will undergo moderate physical and chemical changes, and some moisture will be emitted. The stems and leaves wilt, the color is dark green, and the grass gas is lost, which can increase the aroma and theaflavin content of the tea. However, under the natural environment, not only the temperature and humidity are difficult to meet the optimal requirements, but also the black tea needs to be treated with a certain amount of water. The thickness is evenly spread, which will consume a lo...

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Problems solved by technology

[0002] Black tea withering is one of the important steps in the production process of black tea. It refers to spreading evenly under certain temperature and humidity conditions, so that the activity of enzymes in fresh leaves can be moderately promoted, and the contained substances will undergo moderate physical and chemical changes, and some moisture will be emitted. The stems and leaves wilt, the color is dark green, and the grass gas is lost, which can increase the aroma and theaflavin content of the tea. However, under the natural environment, not only the temperature and humidity are difficult to meet the optimal requirements, but also the black tea needs to be treated with a certain amount of water. Spread evenly in thickness, which will consume a lot of space

[0003] In view of the above-mentioned defects, the efficiency and quality of black tea withering are not good, and it is troublesome to spread evenly. The existing technology has the purpose of improving the efficiency of withering and spreading through corresponding equipment, but the withering equipment in the prior art only After the tea leaves are spread out, they are transported to the inner space for heating operation, which can only have a better withering effect on the upper layer of tea leaves, so the withering effect is limited

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