CN106359684A - Black tea making process - Google Patents
Black tea making process Download PDFInfo
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- CN106359684A CN106359684A CN201610990636.4A CN201610990636A CN106359684A CN 106359684 A CN106359684 A CN 106359684A CN 201610990636 A CN201610990636 A CN 201610990636A CN 106359684 A CN106359684 A CN 106359684A
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- black tea
- fermentation
- air
- withering
- kneading
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23F—COFFEE; TEA; THEIR SUBSTITUTES; MANUFACTURE, PREPARATION, OR INFUSION THEREOF
- A23F3/00—Tea; Tea substitutes; Preparations thereof
- A23F3/06—Treating tea before extraction; Preparations produced thereby
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23F—COFFEE; TEA; THEIR SUBSTITUTES; MANUFACTURE, PREPARATION, OR INFUSION THEREOF
- A23F3/00—Tea; Tea substitutes; Preparations thereof
- A23F3/06—Treating tea before extraction; Preparations produced thereby
- A23F3/08—Oxidation; Fermentation
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23F—COFFEE; TEA; THEIR SUBSTITUTES; MANUFACTURE, PREPARATION, OR INFUSION THEREOF
- A23F3/00—Tea; Tea substitutes; Preparations thereof
- A23F3/06—Treating tea before extraction; Preparations produced thereby
- A23F3/12—Rolling or shredding tea leaves
Abstract
The invention discloses a black tea making process, belonging to the technical field of tea leaf processing. The black tea making process comprises the following steps: picking tea leaves, performing withering fermentation, performing primary drying, kneading, performing secondary kneading, inspecting, and delivering from a warehouse, wherein black tea to be withered is put into a withering chamber of a machine body in the withering fermentation step; the withered black tea is put into a fermentation chamber of the machine body; a variable frequency motor is powered on; a first fan and a second fan are driven to rotate by the variable frequency motor through a rotating shaft; when the fist fan is rotated, negative pressure can be formed at a rotation center; under the action of the negative pressure in the fermentation chamber, the air inside the fermentation chamber is fed into a flue and is discharged out from an air discharge hole under the action of a one-way valve; the humidity of the air inside the fermentation chamber inside the machine body is 85-95%. By adopting the scheme, the moisture of the black tea is evaporated to form high-humidity air which is conveyed into the fermentation chamber, so that no extra humidification equipment is needed in the scheme, and meanwhile the moisture of fresh black tea leaves can be effectively utilized.
Description
Technical field
The present invention relates to Tea Processing technical field.
Background technology
Black tea is a kind of tea made by fermentation, and the chemical reaction of polyphenols makes in fresh leaf during the fermentation
Chemical composition change is larger, can produce the compositions such as theaflavin, thearubigins, the obvious increase than fresh leaf of its fragrance, forms black tea, red
The feature of soup, red autumnal leaves and fragrant and sweet taste alcohol；Its moral character is gentle, and taste is mellow, containing multiple water-soluble vitamin, rich in trace element
Potassium, can help gastro-intestinal digestion, promote appetite, can diuresis, eliminate edema, and strong cardiac function, often drink black tea strong to skeleton
It is good for and also benefit.
In terms of the processing of black tea, black tea belongs to full fermentation tea, and it is with suitable Camellia sinensis Xin Yaye as raw material, through adopting
The tea that tea, the series of process process such as wither, knead, fermenting, being dried refine, black tea wither be by the fresh leaf under adopting by
Certain thickness spreads, and by dry in the sun, makes fresh leaf assume wilted condition, black tea has distributing of large quantity of moisture during withering；
Sweat is that black tea is placed under suitable environmental condition, so that leaf is fermented fully, reduces not mature abnormal smells from the patient, and occur strong
Fragrance, the temperature generally requiring in sweat is 25-35 DEG C, and the air humidity that sweat needs is 90% about.
In processing, the moisture producing during withering is directly emitted in the air to conventional black, and during the fermentation
The general air humidity to ensure that using damping device fermentation is indoor, this processing technique not only increases whole black tea processing machine
The complexity of tool, also fails to moisture when withering effectively is utilized simultaneously.
Content of the invention
The invention is intended to providing a kind of moisture evaporating when black tea can wither to be delivered in fermenting cellar to keep fermenting cellar
Inside there is suitable humidity, without the black tea processing technique setting up extra humidification apparatus.
Black tea processing technique in this programme, including step of picking tea-leaves, also includes wither fermentation step, for the first time drying step
Suddenly step, second baking step and inspection outbound step, are kneaded；
Wither in fermentation step described, black tea to be withered be placed in the interior of withering of body, stand tea thickness is 12-15cm,
Black tea after withering is placed in the fermentation interior of body, stand tea thickness is 15-20cm, starts frequency conversion motor, frequency conversion motor
Frequency of supply be 50-100hz, the rotating speed of frequency conversion motor is 1500-3000r/min, and frequency conversion motor passes through rotating shaft drive first
Fan and the second fan rotate simultaneously, and the air-flow that the second fan produces when rotating enters into, by through hole, interior of withering, the first wind
Negative pressure will be formed in center of rotation, the indoor air of fermentation enters into air channel through air inlet in the presence of negative pressure when fan rotates
Interior, and discharge from exhaust outlet so that the air humidity of fermenting cellar is 85-95% in body in the presence of check valve, through room of withering
Black tea water content after withering is 45-50%, and the black tea water content after the fermentation of fermented room is 80-90%；
In described first time baking step, the black tea after the fermentation step that withers is placed in dehydrator and carries out drying for the first time
Dry, the temperature of dehydrator is 80-90 DEG C, drying time 1-2min, and the water content of the black tea after drying through first time is 60-65%；
Knead in step described, the black tea after first time baking step is placed in kneading machine, the dress leaf rate of kneading machine is
75-80%, the rotating speed of kneading machine is 60-70r/min, kneads time 70-80min, and when kneading, first sky rubs 10-15min, then adopts
Knead mode with what light pressure and weight combined, for 2-3:1, the black tea rolled twig rate after kneading is 90- to time of light pressure and weight ratio
95%, thin portion percentage of damage 60-65%；
In described second baking step, the black tea obtaining through kneading step is again placed in being dried in dehydrator, dries
The temperature of dry machine is 115-125 DEG C, drying time 30-40min, and the moisture content of the black tea after drying through second is 5-6%；
In described inspection outbound step, by outbound of can testing after the black tea spreading for cooling after drying through second.
The fermentation step that withers of this programme is carried out in the fermentation all-in-one that withers, and black tea to be withered is placed in room of withering
Interior, stand tea thickness is 12-15cm, and this thickness ensure that the amount of black tea when withering every time, is avoided that black tea thickness simultaneously again
The long problem of the blocked up withering time leading to, black tea to be fermented is placed in fermentation interior, and leaf-spreading thickness is 15-20cm, should
Thickness namely the amount that ensure that each fermentation, turn avoid the overlong time of each fermentation.
Simultaneously when being withered and ferment, start frequency conversion motor, make frequency conversion motor drive rotating shaft to do high-speed rotation, rotating shaft
The first fan and the second fan is driven to rotate while high-speed rotation, the first fan can be in the first fan while high-speed rotation
Center of rotation form negative pressure, this negative pressure make to wither air of interior is assembled to the center of rotation of the first fan, in room of withering
Under the evaporation of interior black tea, the air of interior of withering has higher humidity, now has the air accumulation of higher levels of humidity
Entered in air channel by air inlet further after the center of rotation of the first fan, the effect of the check valve in air channel
Under, air moves from air inlet to the position of air vent, and final some air vents through communicating with air channel enter into fermenting cellar
Interior, now enter into, through air vent, the air humidity that the indoor air humidity of fermentation makes fermenting cellar interior energy keep 85-95%, thus
Meet the indoor black tea of the fermentation higher humidity required in fermentation.The air-flow that second fan produces when rotating simultaneously will
Interior of withering is entered into by the through hole on second partition, the air-flow entering into interior of withering will promote to be placed on interior of withering
Black tea float, one side black tea float can make black tea have bigger contact surface than when being stacked with air
Long-pending, so that the evaporation of black tea is strengthened, on the other hand the air of flowing also can accelerate the moisture of the black tea of interior that withers
Distribute.
In first time baking step, the temperature setting of dehydrator is 80-90 DEG C, drying time 1-2min is so that warp
After crossing fermentation of withering, water content dries, in the black tea of 80-90%, the black tea obtaining that water content is 60-65%, and this water content makes black tea
There is during subsequently kneading the ratio of briquetting increased.
In kneading step, the black tea obtaining after drying through first time is put in kneading machine and is processed, kneading machine
Rubbed using first sky, then the mode that light pressure and weight combine, if only with the mode of light pressure, then kneading uneven, rolled twig rate
Difference, if having been used up the mode of weight, then the black tea percentage of damage processing will be higher, and ratio defective product is low, and therefore this programme adopts
The mode that light pressure and weight combine, time of wherein light pressure and weight ratio for 2-3:1, thus ensure that the effect kneaded, and
Effectively reduce percentage of damage, will be rubbed in the black tea of 60-65% through drying the water content obtaining for the first time in this programme simultaneously
Twist with the fingers, further increase rolled twig rate, knead after step through this programme, the rolled twig rate of black tea is 90-95%, and cell crashing ratio is
60-65%.
In second baking step, the temperature setting of dehydrator is 115-125 DEG C, drying time 30-40min, obtain
The moisture content of the black tea arriving is 5-6%, carries out detection and pack after second dries after the black tea spreading for cooling that will obtain.
The advantage of this programme is: 1, this programme will wither and fermentation step melts as a step, and using withering, fermentation machine is carried out
The production of this step, and the highly humid air that black tea moisture evaporation is formed during withering to be delivered to fermentation indoor, with this come for
The indoor black tea of fermentation provides fermentation required highly humid air, and therefore this programme does not need to set up extra humidification apparatus
So that the air humidity of the indoor holding 85-95% of fermentation, also enable the effectively utilizes of moisture in black tea fresh leaf simultaneously.
2nd, after the kneading in technique of black tea is placed on first time baking step by this programme, and so that after drying for the first time
Black tea moisture content in 60-65%, because black tea needs certain moisture content to ensure rolled twig rate when kneading, and
, typically 50% about, therefore this programme is direct withering after with tradition for moisture content in black tea after withering for the traditional handicraft
The technique kneaded is compared, and improves rolled twig rate.
Further, in the fermentation step that withers, when the air of interior of withering is through air channel, in air channel, heating plate produces
Heat heats to air.
The indoor highly humid air that withers moves from air inlet to the position of air vent, moves to the heating in air channel when air
When at plate, heating plate will heat to the air passing through, and the air after heating moves up again, and final warp is communicated with air channel
Some air vents enter into that fermentation is indoor, now entering into the indoor air of fermentation through air vent is then to have higher humidity
And there is the air of certain temperature, thus meet the indoor black tea of the fermentation temperature required in fermentation and higher wet
Degree.
Further, in the fermentation step that withers, frequency conversion motor frequency of supply is 50hz, and frequency conversion motor rotating speed is 1500r/
Min, the indoor air humidity of fermentation is 90%.
The frequency of supply of frequency conversion motor be 50hz, therefore this frequency conversion motor use when it is only necessary to be passed through common exchange
Electricity, easy to use, the indoor air humidity of fermentation is maintained at 90%, this humidity can sufficiently meet sending out of black tea simultaneously
Ferment demand.
Further, in the fermentation step that withers, rotating shaft also drives rotor plate to rotate while rotating, and rotor plate rotates
Meanwhile, hinged with rotor plate connecting plate drives that to turn over leaf block protruding under the influence of centrifugal force, in the presence of stage clip, turns over
The leaf-teeth black tea indoor to fermentation that turns on leaf block carries out turning over leaf.
Due to black tea need in fermentation frequently black tea is carried out turning over leaf so that the indoor black tea being located at lower floor of fermentation
Can preferably be fermented, when rotor plate high-speed rotation, the contiguous block hinged with rotor plate will drive stage clip and turn over leaf block and exist
Protruding in the presence of centrifugal force, now turn over the black tea that leaf-teeth can be automatically indoor to fermentation of turning on leaf block and carry out turning over leaf,
Stage clip can contact it is ensured that turning over the effect of leaf so that turning over leaf-teeth all the time with black tea simultaneously, when actually used, by controlling variable-frequency electric
The rotating speed of machine, and then control the rotating speed of rotor plate can easily realize the black tea to diverse location and carry out turning over the purpose of leaf.
Further, in kneading step, the dress leaf rate of kneading machine is 80%, and the rotating speed of kneading machine is 70r/min, after kneading
Black tea rolled twig rate 95%, cell crashing ratio be 65%.
If the dress leaf rate in kneading machine is very few, black tea will be stagnated in kneading disk, and rotation is ineffective, does not have the effect of kneading,
If the dress leaf rate in kneading machine is excessive, the upset of black tea is dumb, easily occurs kneading uneven phenomenon, in kneading machine
Dress leaf rate is 80%, can knead well, can prevent again and knead uneven phenomenon.
Brief description
Fig. 1 for the embodiment of the present invention wither fermentation all-in-one structural representation.
Specific embodiment
Below by specific embodiment, the present invention is further detailed explanation:
Reference in Figure of description includes: body 1, fermenting cellar 2, the first dividing plate 21, room 3 of withering, second partition 31, turn
Axle 4, the first fan 41, the second fan 42, air inlet 43, air channel 44, check valve 45, heating plate 46, rotor plate 5, contiguous block 51,
Stage clip 52, turn over leaf block 53, frequency conversion motor 6.
Embodiment 1:
A kind of black tea processing technique, comprises the following steps:
(1), pick tea-leaves: 1 bud 2 leaf is plucked on Camellia sinensis, the fresh leaf of no disease and pests harm is standby；
(2), wither fermentation: the fresh leaf plucked in step (1) is placed in the interior of withering of body, stand tea thickness is 12cm, will be through
Cross the fermentation interior that the black tea after withering is placed in body, stand tea thickness is 15cm, start frequency conversion motor, the power supply frequency of frequency conversion motor
Rate is 50hz, and the rotating speed of frequency conversion motor is 1500r/min, and frequency conversion motor drives rotor plate, the first fan and second by rotating shaft
Fan rotates simultaneously, and the air-flow that the second fan produces when rotating enters into, by through hole, interior of withering, will when the first fan rotates
Form negative pressure in center of rotation, the indoor air of fermentation enters in air channel through air inlet in the presence of negative pressure, and unidirectional
Discharge from exhaust outlet in the presence of valve, when the air of interior of withering is through air channel, the heat that in air channel, heating plate produces is to sky
Gas is heated, and rotating shaft also drives rotor plate to rotate while rotating, while rotor plate rotates, the company hinged with rotor plate
Fishplate bar drives that to turn over leaf block protruding under the influence of centrifugal force, in the presence of stage clip, turns over and turns over leaf-teeth to fermentation on leaf block
Indoor black tea carries out turning over leaf, and in body, the air humidity of fermenting cellar is 85%, and the black tea water content after withering is 45%, after fermentation
Black tea water content be 80%；
(3) dry for the first time: the black tea after the fermentation step that withers is placed in dehydrator and carries out drying for the first time, dehydrator
Temperature is 80 DEG C, drying time 1min, and the water content of the black tea after drying through first time is 60%；
(4) knead: the black tea after first time baking step is placed in kneading machine, the dress leaf rate of kneading machine is 75%, kneading machine
Rotating speed be 60r/min, knead time 70min, when kneading, first sky rubs 10min, then using kneading that light pressure and weight combine
Mode, for 2:1, the black tea rolled twig rate after kneading is 90% to time of light pressure and weight ratio, thin portion percentage of damage 60%；
(5) dry for second: the black tea obtaining through kneading step is again placed in being dried in dehydrator, the temperature of dehydrator
For 115 DEG C, drying time 30min, the moisture content of the black tea after drying through second is 5%；
(6) check outbound: by outbound of can testing after the black tea spreading for cooling after drying through second.
Embodiment 2:
A kind of black tea processing technique, comprises the following steps:
(1), pick tea-leaves: 1 bud 2 leaf is plucked on Camellia sinensis, the fresh leaf of no disease and pests harm is standby；
(2), wither fermentation: the fresh leaf plucked in step (1) is placed in the interior of withering of body, stand tea thickness is 14cm, will be through
Cross the fermentation interior that the black tea after withering is placed in body, stand tea thickness is 18cm, start frequency conversion motor, the power supply frequency of frequency conversion motor
Rate is 60hz, and the rotating speed of frequency conversion motor is 1800r/min, and frequency conversion motor drives rotor plate, the first fan and second by rotating shaft
Fan rotates simultaneously, and the air-flow that the second fan produces when rotating enters into, by through hole, interior of withering, will when the first fan rotates
Form negative pressure in center of rotation, the indoor air of fermentation enters in air channel through air inlet in the presence of negative pressure, and unidirectional
Discharge from exhaust outlet in the presence of valve, when the air of interior of withering is through air channel, the heat that in air channel, heating plate produces is to sky
Gas is heated, and rotating shaft also drives rotor plate to rotate while rotating, while rotor plate rotates, the company hinged with rotor plate
Fishplate bar drives that to turn over leaf block protruding under the influence of centrifugal force, in the presence of stage clip, turns over and turns over leaf-teeth to fermentation on leaf block
Indoor black tea carries out turning over leaf, and in body, the air humidity of fermenting cellar is 90%, and the black tea water content after withering is 48%, after fermentation
Black tea water content be 85%；
(3) dry for the first time: the black tea after the fermentation step that withers is placed in dehydrator and carries out drying for the first time, dehydrator
Temperature is 85 DEG C, drying time 2min, and the water content of the black tea after drying through first time is 62%；
(4) knead: the black tea after first time baking step is placed in kneading machine, the dress leaf rate of kneading machine is 78%, kneading machine
Rotating speed be 65r/min, knead time 75min, when kneading, first sky rubs 13min, then using kneading that light pressure and weight combine
Mode, for 2:1, the black tea rolled twig rate after kneading is 92% to time of light pressure and weight ratio, thin portion percentage of damage 62%；
(5) dry for second: the black tea obtaining through kneading step is again placed in being dried in dehydrator, the temperature of dehydrator
For 120 DEG C, drying time 35min, the moisture content of the black tea after drying through second is 6%；
(6) check outbound: by outbound of can testing after the black tea spreading for cooling after drying through second.
Embodiment 3:
A kind of black tea processing technique, comprises the following steps:
(1), pick tea-leaves: 1 bud 2 leaf is plucked on Camellia sinensis, the fresh leaf of no disease and pests harm is standby；
(2), wither fermentation: the fresh leaf plucked in step (1) is placed in the interior of withering of body, stand tea thickness is 15cm, will be through
Cross the fermentation interior that the black tea after withering is placed in body, stand tea thickness is 20cm, start frequency conversion motor, the power supply frequency of frequency conversion motor
Rate is 100hz, and the rotating speed of frequency conversion motor is 3000r/min, and frequency conversion motor drives rotor plate, the first fan and second by rotating shaft
Fan rotates simultaneously, and the air-flow that the second fan produces when rotating enters into, by through hole, interior of withering, will when the first fan rotates
Form negative pressure in center of rotation, the indoor air of fermentation enters in air channel through air inlet in the presence of negative pressure, and unidirectional
Discharge from exhaust outlet in the presence of valve, when the air of interior of withering is through air channel, the heat that in air channel, heating plate produces is to sky
Gas is heated, and rotating shaft also drives rotor plate to rotate while rotating, while rotor plate rotates, the company hinged with rotor plate
Fishplate bar drives that to turn over leaf block protruding under the influence of centrifugal force, in the presence of stage clip, turns over and turns over leaf-teeth to fermentation on leaf block
Indoor black tea carries out turning over leaf, and in body, the air humidity of fermenting cellar is 95%, and the black tea water content after withering is 50%, after fermentation
Black tea water content be 90%；
(3) dry for the first time: the black tea after the fermentation step that withers is placed in dehydrator and carries out drying for the first time, dehydrator
Temperature is 90 DEG C, drying time 2min, and the water content of the black tea after drying through first time is 65%；
(4) knead: the black tea after first time baking step is placed in kneading machine, the dress leaf rate of kneading machine is 80%, kneading machine
Rotating speed be 70r/min, knead time 80min, when kneading, first sky rubs 15min, then using kneading that light pressure and weight combine
Mode, for 3:1, the black tea rolled twig rate after kneading is 95% to time of light pressure and weight ratio, thin portion percentage of damage 65%；
(5) dry for second: the black tea obtaining through kneading step is again placed in being dried in dehydrator, the temperature of dehydrator
For 125 DEG C, drying time 40min, the moisture content of the black tea after drying through second is 5%；
(6) check outbound: by outbound of can testing after the black tea spreading for cooling after drying through second.
Above-described embodiment 1, embodiment 2 and embodiment 3 wither wither used in fermentation step fermentation all-in-one for example attached
Shown in Fig. 1, including body 1, it is respectively equipped with the first dividing plate 21 and second partition 31, the first dividing plate 21 in body 1 from top to bottom
Fermenting cellar 2, wither room 3 and bottom chamber will be divided into second partition 31 from top to bottom, on second partition 31 in body 1
It is additionally provided with some through holes.
Be additionally provided with rotating shaft 4 in body 1, the upper end of rotating shaft 4 is stretched out body 1 and is connected with frequency conversion motor 6, rotating shaft 4 with become
Frequency motor 6 adopts spline connection, and the structure of spline connection is simple, and the transfer performance of power is reliable and stable simultaneously, the lower end of rotating shaft 4
It extend in body 1, rotating shaft 4 lower end sequentially passes through fermenting cellar 2, the first dividing plate 21, room 3 of withering, extend into after second partition 31
In bottom chamber.
Rotor plate 5, the first fan 41 and the second fan 42, wherein rotor plate 5 are sequentially installed with from top to bottom on rotating shaft 4
In fermenting cellar 2, the first fan 41 is located at and withers in room 3, and the distance between the first fan 41 and first dividing plate 21 are little simultaneously
In the distance between the first fan 41 and second partition 31, the second fan 42 is located in bottom chamber, the first fan 41 and second
Fan 42 is all attached using between flat key and rotating shaft 4.
Air inlet 43 is further opened with rotating shaft 4, air inlet 43 is located at the position between the first dividing plate 21 and the first fan 41
Put, air channel 44 is further opened with rotating shaft 4, air channel 44 is communicated with air inlet 43 and extends up in fermenting cellar 2, in rotating shaft 4
Be additionally provided with some air vents positioned at the position of fermenting cellar 2, air vent is all communicated with air channel 44, the air vent in lower side with enter
Heating plate 46 and check valve 45 are sequentially provided with the air channel 44 between QI KOU 43, heating plate 46 can be in air channel 44 from top to bottom
Air is heated, and check valve 45 makes air from air inlet 43 to moving in the direction of air vent, and can only be unable to opposite direction
Motion.
The position being located at fermenting cellar 2 in rotating shaft 4 is also equipped with rotor plate 5, and rotor plate 5 is located at the top of air vent, is turning
The both sides of dynamic plate 5 are all hinged with contiguous block 51, and contiguous block 51 bottom is provided with stage clip 52, and stage clip 52 lower end is provided with turns over leaf block 53,
It is provided with turning over leaf block 53 and some turn over leaf-teeth.
Above-described is only embodiments of the invention, and in scheme, the general knowledge here such as known concrete structure and characteristic is not made
Excessive description.It should be pointed out that for a person skilled in the art, on the premise of without departing from present configuration, acceptable
Make some deformation and improve, these also should be considered as protection scope of the present invention, these are implemented all without the impact present invention
Effect and practical applicability.This application claims protection domain should be defined by the content of its claim, in description
Specific embodiment etc. records the content that can be used for explaining claim.
Claims (5)
1. a kind of black tea processing technique, including step of picking tea-leaves it is characterised in that also including wither fermentation step, for the first time drying
Step, knead step, second baking step and inspection outbound step；
Wither in fermentation step described, black tea to be withered be placed in the interior of withering of body, stand tea thickness is 12-15cm,
Black tea after withering is placed in the fermentation interior of body, stand tea thickness is 15-20cm, starts frequency conversion motor, frequency conversion motor
Frequency of supply be 50-100hz, the rotating speed of frequency conversion motor is 1500-3000r/min, and frequency conversion motor passes through rotating shaft drive first
Fan and the second fan rotate simultaneously, and the air-flow that the second fan produces when rotating enters into, by through hole, interior of withering, the first wind
Negative pressure will be formed in center of rotation, the indoor air of fermentation enters into air channel through air inlet in the presence of negative pressure when fan rotates
Interior, and discharge from air vent so that the air absolute humidity of fermenting cellar is 85-95% in body in the presence of check valve, through withering
Wither room wither after black tea water content be 45-50%, the black tea water content after the fermentation of fermented room is 80-90%；
In described first time baking step, the black tea after the fermentation step that withers is placed in dehydrator and carries out drying for the first time
Dry, the temperature of dehydrator is 80-90 DEG C, drying time 1-2min, and the water content of the black tea after drying through first time is 60-65%；
Knead in step described, the black tea after first time baking step is placed in kneading machine, the dress leaf rate of kneading machine is
75-80%, the rotating speed of kneading machine is 60-70r/min, kneads time 70-80min, and when kneading, first sky rubs 10-15min, then adopts
Knead mode with what light pressure and weight combined, for 2-3:1, the black tea rolled twig rate after kneading is 90- to time of light pressure and weight ratio
95%, thin portion percentage of damage 60-65%；
In described second baking step, the black tea obtaining through kneading step is again placed in being dried in dehydrator, dries
The temperature of dry machine is 115-125 DEG C, drying time 30-40min, and the moisture content of the black tea after drying through second is 5-6%；
In described inspection outbound step, by outbound of can testing after the black tea spreading for cooling after drying through second.
2. black tea processing technique according to claim 1 it is characterised in that: in the fermentation step that withers, when interior of withering
Air when air channel, in air channel heating plate produce heat air is heated.
3. black tea processing technique according to claim 1 it is characterised in that: in the fermentation step that withers, frequency conversion motor supply
Electric frequency is 50hz, and frequency conversion motor rotating speed is 1500r/min, and the indoor air humidity of fermentation is 90%.
4. according to the arbitrary described black tea processing technique of claim 1 or 2 it is characterised in that: in the fermentation step that withers, rotating shaft
Rotor plate is also driven to rotate while rotating, while rotor plate rotates, the connecting plate hinged with rotor plate drives and turn over leaf block
Protruding under the influence of centrifugal force, in the presence of stage clip, the leaf-teeth black tea indoor to fermentation that turns over turning on leaf block is carried out
Turn over leaf.
5. black tea processing technique according to claim 2 it is characterised in that: in kneading step, the dress leaf rate of kneading machine
For 80%, the rotating speed of kneading machine is 70r/min, the black tea rolled twig rate 95% after kneading, and cell crashing ratio is 65%.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107258956A (en) * | 2017-07-31 | 2017-10-20 | 湄潭县品缘茶业有限公司 | Tea processing technique |
| CN107683918A (en) * | 2017-09-20 | 2018-02-13 | 宁波市晶杰国际物流有限公司 | A kind of fully-automatic tea kneading machine |
| CN107683919A (en) * | 2017-09-20 | 2018-02-13 | 宁波市晶杰国际物流有限公司 | A kind of efficient tea twisting machine |
| CN109601659A (en) * | 2019-02-18 | 2019-04-12 | 厦门底蕴实业有限公司 | House for automatically withering tea leaves |
| CN113354462A (en) * | 2021-07-27 | 2021-09-07 | 方民涛 | Fertilizer fermenting installation of being convenient for unload for farming |
| CN114982832A (en) * | 2022-04-07 | 2022-09-02 | 凤冈县秀姑茶业有限公司 | Baking and aroma-improving process of black tea |
| NL2030562B1 (en) * | 2021-12-30 | 2023-07-07 | Tea Res Institute Chinese Academy Of Agricultural Sciences | Intelligent tea leaf spreading, withering and fermenting system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107258956A (en) * | 2017-07-31 | 2017-10-20 | 湄潭县品缘茶业有限公司 | Tea processing technique |
| CN107683918A (en) * | 2017-09-20 | 2018-02-13 | 宁波市晶杰国际物流有限公司 | A kind of fully-automatic tea kneading machine |
| CN107683919A (en) * | 2017-09-20 | 2018-02-13 | 宁波市晶杰国际物流有限公司 | A kind of efficient tea twisting machine |
| CN109601659A (en) * | 2019-02-18 | 2019-04-12 | 厦门底蕴实业有限公司 | House for automatically withering tea leaves |
| CN113354462A (en) * | 2021-07-27 | 2021-09-07 | 方民涛 | Fertilizer fermenting installation of being convenient for unload for farming |
| NL2030562B1 (en) * | 2021-12-30 | 2023-07-07 | Tea Res Institute Chinese Academy Of Agricultural Sciences | Intelligent tea leaf spreading, withering and fermenting system |
| CN114982832A (en) * | 2022-04-07 | 2022-09-02 | 凤冈县秀姑茶业有限公司 | Baking and aroma-improving process of black tea |
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Application publication date: 20170201 |