CN102293269A

CN102293269A - Technology for automatic, continuous and pollution-free production of green tea

Info

Publication number: CN102293269A
Application number: CN2011102584691A
Authority: CN
Inventors: 朱启忠
Original assignee: YUNNAN LANDSUNTEA GREEN INDUSTRY Co Ltd
Current assignee: YUNNAN LANDSUNTEA GREEN INDUSTRY Co Ltd
Priority date: 2011-09-02
Filing date: 2011-09-02
Publication date: 2011-12-28

Abstract

The invention discloses a technology for automatic, continuous and pollution-free production of green tea. The technology comprises the following steps of: picking fresh leaves, withering, killing green, cooling, storing green and regaining moisture, metering, twisting, dynamically dehydrating, deblocking and drying, and drying. By the technology, the cost is saved, the production time is shortened, the work efficiency is also improved, and the quality of the product is more improved.

Description

Automation continuity cleaner production Green Tea Processing technology

Technical field

The present invention relates to tea Processing method, particularly a kind of automation continuity cleaner production Green Tea Processing technology.

Background technology

Green tea is one of six traditional big teas of China, great majority are artificial auxiliary operations in its traditional manufacturing technique, the process equipment of the present automation continuity cleaner production green tea that uses, operating personnel contact tealeaves hardly in whole process of production, tealeaves does not land yet, reduce the pollution of tealeaves in whole process of production, guaranteed health, the safety of tea products.But the technological process that this equipment adopts is: bright leaf-wither-complete-cool off-store up green fodder and get damp again-measure-knead-the dynamically dehydration-microwave tempering-moisture regain-metering of the storing up green fodder-oven dry of knead-deblocking again-microwave tempering-drying.Find to have a lot of discomforts by utilization more than a year, too much as processing step, loaded down with trivial details complexity also causes production cost to rise.

Summary of the invention

The purpose of this invention is to provide a kind of improved automation continuity cleaner production Green Tea Processing technology, to overcome the deficiency that prior art exists.Processing step of the present invention after changing is: leaf picking-wither-complete-cool off-store up green fodder and get damp again-measure-knead-dynamically dewater-oven dry-oven dry of deblocking, form a kind of new technical characterictic, the face shaping and the mouthfeel of the product of acquisition also are greatly improved.This improvement technology had both been saved cost, had shortened the production time, had improved work efficiency again, more improved the quality of product.

The specific embodiment:

This green tea processing method provided by the invention further specifies by following concrete steps:

1, leaf picking: pluck the fresh leaves of tea plant of a bud one leaf and two leaves and a bud, kind is a raw material with big-leaf species in yunnan clone breeding and sexual colony kind.

2, wither: will check and accept the bright leaf in back, and evenly spread on withering trough, thickness 5～10cm withers the degree of withering: food value of leaf softness, tender stalk folding is and continuous, and the blade face tarnishes, and the leaf look dark green, green odour scatters and disappears, and appears delicate fragrance, and bright leaf weight-loss ratio reaches 20～25% and gets final product.

3, complete: adopt 6CSFB500 type superelevation hot air water-removing machine to complete, the temperature that completes is set to 250 ℃～350 ℃, and when boiler temperature reaches 270 ℃, the warm-air pipe temperature rises when reaching 350 ℃ kills (350 ℃ of maximum temperatures, 250 ℃ of minimum temperatures); Degree completes: the food value of leaf is withered soft, and leaf is opened shrinkage, and hand is pinched agglomerating, loose one's grip to be difficult for scattering, and toughness, tender stalk folding is continuous, and the blade face tarnishes, and the leaf look dark green.

4, cooling: water-removing leaves enters into coolconveyer after going out cylinder, water-removing leaves is transported to the damping machine of storing up green fodder after being transported to the tealeaves elevator.

5, the damping machine of storing up green fodder :After mainly making the water-removing leaves cooling, make the interior moisture redistribution of tealeaves body evenly, help kneading moulding through the damping machine of storing up green fodder.

6, metering: water-removing leaves is transported to metering device by conveyer with tealeaves through the moisture regain back of storing up green fodder and is transported in every kneading machine through the tealeaves of metering by elevator and kneads.

The every barreled leaf of kneading machine amount is set by operating personnel, and concrete operation method is: operating personnel are by electrical equipment control options button cashier's office in a shop, and selected desired parameters is again by the scroll-up/down key, at last by determining key.Be that every barreled leaf amount just is provided with.

7 ,Knead: water-removing leaves is kneaded to kneading machine through conveyor delivery; Knead the time: the different material rank, the desired parameters difference, when parameter was provided with, hand was touched the public picture on the touch-screen electrical control cubicles, and it demonstrates relevant indication, according to the indicative of settings desired parameters.

Gently rub/close lid: be exactly that water-removing leaves is packed into and kneaded bucket back a lid of kneading bucket is covered, look tea raw material old tender and decision is taked gently to rub, in rub, heavily rub, the degree of in the process of kneading, pressurizeing exactly, this is a program default on conventional electric controller, as long as in operating process, be provided with on demand:

One-level, secondary raw materials are kneaded parameter and are set, as the example 1 that sees the following form:

?	Positioning time (branch)	Positioning pressure (%)	Knead the time (branch)
				Gently rub/close lid	0.6	90	10-12
In rub/two rub	0.2	40	0
				Heavily rub/three rub	0.3	40	0
The loosening time	0.3	?	1
				The tea delivery time	?	?	3
Involution pressure	?	90	?
				Time of vibration	?	?	7

One-level, secondary raw materials are kneaded parameter and are set, as the example 2 of following table:

?	Positioning time (branch)	Positioning pressure (%)	Knead the time (branch)
				Gently rub/close lid	0.6	90	4-5
In rub/two rub	0.2	30	0
				Heavily rub/three rub	0	40	0
The loosening time	0.3	?	0.5
				The tea delivery time	?	?	3
Involution pressure	?	90	?
				Time of vibration	?	?	7

One-level, secondary raw materials are kneaded parameter and are set, example 3 as shown in the table:

?	Positioning time (branch)	Positioning pressure (%)	Knead the time (branch)
				Gently rub/close lid	0.6	90	5
In rub/two rub	0.3	40	5
				Heavily rub/three rub	0	?0	0
The loosening time	0.3	?	0.3
				The tea delivery time	?	?	3-4
Involution pressure	?	90	?
				Time of vibration	?	?	7-8

8, dynamically dehydration: behind the kneading machine inferior lobe, tealeaves is dewatered to rotating drum type drying machine through the inclined conveyor delivery by vibra shoot.The ceiling temperature of rotating drum type drying machine is set to about 150 ℃, and lower limit temperature is set at about 120 ℃.Tealeaves is through dynamically being transported to the oven dry of deblocking in the dryer that deblocks by the inclined conveyer with tealeaves after the dehydration.

9, oven dry: be divided into gross fire and the fiery two procedures of foot.100 ± 5 ℃ of gross fire temperature, baking are done to seventy percent, and it is constantly broken that hand is pinched the tea bar, the spinosity feel.90 ± 5 ℃ of the fiery temperature of foot are dried by the fire to gross tea water content 6 ± 0.5%, and hand is twisted with the fingers the tea bar and become the end.

10, promptly make green tea product by above-mentioned steps.

Claims

1. the processing technology of an automation continuity cleaner production green tea is characterized in that step is as follows:

1), leaf picking: the fresh leaves of tea plant of plucking a bud one leaf and two leaves and a bud is a raw material;

2), wither: will check and accept the bright leaf in back, and evenly spread on withering trough, thickness 5～10cm withers to bright leaf weight-loss ratio and reach 20～25%;

3), complete: adopt 6CSFB500 type superelevation hot air water-removing machine to complete, the temperature that completes is set to 250 ℃～350 ℃, and when boiler temperature reaches 270 ℃, the warm-air pipe temperature rises when reaching 350 ℃ kills;

4), cooling: water-removing leaves enters into coolconveyer after going out cylinder, water-removing leaves is transported to the damping machine of storing up green fodder after being transported to the tealeaves elevator;

5), the damping machine of storing up green fodder :After the water-removing leaves cooling, make the interior moisture redistribution of tealeaves body evenly, help kneading moulding through the damping machine of storing up green fodder;

6), measure and knead: water-removing leaves is transported to metering device by conveyer with tealeaves through the moisture regain back of storing up green fodder, the every barreled leaf of kneading machine amount is determined by operating personnel, be transported in every kneading machine and knead by the tealeaves of elevator, kneaded 10～12 minutes through metering;

7), dynamically dehydration: behind the kneading machine inferior lobe, by vibra shoot tealeaves is dewatered to rotating drum type drying machine through the inclined conveyor delivery, the ceiling temperature of rotating drum type drying machine is set to about 150 ℃, and lower limit temperature is set at about 120 ℃;

8), tealeaves is through dynamically being transported to the oven dry of deblocking in the dryer that deblocks by the inclined conveyer with tealeaves after the dehydration;

9), oven dry is divided into gross fire and the fiery two procedures of foot: 100 ± 5 ℃ of gross fire temperature, baking are done to seventy percent, and 90 ± 5 ℃ of the fiery temperature of foot are dried by the fire to gross tea water content 6 ± 0.5%, and hand is twisted with the fingers the tea bar and become the end, promptly makes green tea product.