CN114617171B - Fresh leaf treatment method and treatment device for black tea processing - Google Patents
Fresh leaf treatment method and treatment device for black tea processing Download PDFInfo
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- CN114617171B CN114617171B CN202210194426.XA CN202210194426A CN114617171B CN 114617171 B CN114617171 B CN 114617171B CN 202210194426 A CN202210194426 A CN 202210194426A CN 114617171 B CN114617171 B CN 114617171B
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- 238000012545 processing Methods 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 31
- 244000269722 Thea sinensis Species 0.000 title claims abstract description 27
- 235000006468 Thea sinensis Nutrition 0.000 title claims abstract description 22
- 235000020279 black tea Nutrition 0.000 title claims abstract description 22
- 238000003892 spreading Methods 0.000 claims abstract description 59
- 230000007480 spreading Effects 0.000 claims abstract description 59
- 238000009423 ventilation Methods 0.000 claims abstract description 22
- 238000005273 aeration Methods 0.000 claims description 17
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
- 229910052799 carbon Inorganic materials 0.000 claims description 9
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- 238000001704 evaporation Methods 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 230000008020 evaporation Effects 0.000 abstract description 5
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- 235000013616 tea Nutrition 0.000 description 5
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- 150000001413 amino acids Chemical class 0.000 description 2
- 150000001720 carbohydrates Chemical class 0.000 description 2
- 235000014633 carbohydrates Nutrition 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 235000010987 pectin Nutrition 0.000 description 2
- 229920001277 pectin Polymers 0.000 description 2
- 239000001814 pectin Substances 0.000 description 2
- 150000008442 polyphenolic compounds Chemical class 0.000 description 2
- 235000013824 polyphenols Nutrition 0.000 description 2
- 235000014620 theaflavin Nutrition 0.000 description 2
- 235000009024 Ceanothus sanguineus Nutrition 0.000 description 1
- 240000003759 Erodium cicutarium Species 0.000 description 1
- 235000009967 Erodium cicutarium Nutrition 0.000 description 1
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- 235000017337 Persicaria hydropiper Nutrition 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- RJGDLRCDCYRQOQ-UHFFFAOYSA-N anthrone Chemical compound C1=CC=C2C(=O)C3=CC=CC=C3CC2=C1 RJGDLRCDCYRQOQ-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
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Classifications
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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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/90—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in food processing or handling, e.g. food conservation
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- Life Sciences & Earth Sciences (AREA)
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Tea And Coffee (AREA)
Abstract
The invention relates to a fresh leaf processing method and a processing device for black tea processing, which belong to the technical field of black tea production, wherein a spreading and airing chamber and a plurality of withering chambers are arranged in the device to realize automatic running water processing, a roundabout conveying and spreading and airing conveyor is arranged in the spreading and airing chamber, a hemispherical ventilation convex block is arranged on the surface of a belt of the conveyor, and adjusted air is introduced from a gap at the bottom of the fresh leaf, flows through the fresh leaf, so that evaporation of moisture in the fresh leaf and emission of green grass smell are accelerated; in the withering room, ventilation is carried out from the middle part of the rotary drum, and the withering process is accelerated by matching with rotation fixation and simulated sunlight irradiation; in addition, the spreading and airing room and the plurality of withering rooms in the device belong to relatively independent spaces, which is beneficial to the precision of quality control, so that the fresh leaf treatment is not limited by natural weather any more; the invention also provides a set of treatment method, and the effective treatment of the fresh leaves can be completed within 2.83 hours when the method is used, so that the treatment time of the fresh leaves is shortened by more than 40 percent.
Description
Technical Field
The invention belongs to the technical field of black tea production, and particularly relates to a fresh leaf treatment method and a fresh leaf treatment device for black tea processing.
Background
The black tea is a fully fermented tea which is prepared by taking proper tea tree sprout leaves as raw materials and refining through the processes of withering, rolling, fermenting, drying and the like, and is named because the tea soup and the leaf base color of the dry tea after brewing are red.
Withering is a key procedure in the processing technology of black tea, and the follow-up technological process, effect and quality are related; in the prior art, in order to improve the quality of tea, a spreading and airing-withering process is generally adopted, wherein spreading and airing is to spread fresh leaves just picked for a period of time to enable part of water in the fresh leaves to be lost, and after the fresh leaves become soft, the fresh leaves enter the next tea making process, and the withering is to enable the fresh leaves to wilt gradually through airing or indoor hot air blowing, so that macromolecules in the fresh leaves are decomposed and converted gradually;
in the prior art, the fresh leaves are mainly placed in a airing net for manual leaf turning and airing, and the withering is generally carried out by using a withering tank, so that the following problems are mainly existed in the fresh leaves in the prior art:
1. the spreading and airing treatment time is generally 2-3 hours, the withering treatment time is generally 3-5 hours, and the overall treatment time is long;
2. the fresh leaves are generally treated in an open environment, are difficult to accurately regulate and control, and are limited by weather conditions.
Disclosure of Invention
In order to solve the technical problems in the background art, the invention provides a fresh leaf processing method and a fresh leaf processing device for black tea processing.
The aim of the invention can be achieved by the following technical scheme:
the fresh leaf processing device for processing the black tea comprises a spreading and airing room and a plurality of withering rooms, wherein a jacking transfer machine and a feeding machine are arranged between the spreading and airing room and the plurality of withering rooms, the jacking transfer machine is used for reversing, the spread and aired fresh leaves are distributed and fed to each feeding machine, and then the spread and aired fresh leaves are respectively transferred to the withering rooms for withering treatment.
The novel spreading and airing machine is characterized in that a plurality of layers of conveyors are arranged in the spreading and airing chamber from top to bottom, adjacent conveyors are distributed in a staggered mode, a feed hopper is arranged at the top of one end of the withering chamber, a guide plate is arranged at the bottom of the feed hopper, fresh leaves are paved on the conveyors of the top layer through the guide plate after being collected from the feed hopper, and then spread and aired are conveyed between the plurality of layers of conveyors in a roundabout mode, the traditional open spreading and airing processing mode is improved to be processed in a stacked mode, the utilization rate of a processing field is high, the labor input is low, relatively independent processing intervals are formed, and the precise control of spreading and airing process parameters is facilitated.
The conveyer belt is last the equipartition to be provided with a plurality of hemispherical ventilative lugs, has all seted up the gas pocket on the ventilative lug, and bright She Pingpu is on adjacent ventilative lug, forms one deck ventilative space between ventilative lug, and is higher than in the guipure gas permeability, avoids fresh leaf to appear covering in the transportation process and burns, leads to the bright She Chuxian red leaf red stalk problem of bottom, influences the outward appearance uniformity of finished product.
Adopt the closing plate to seal between every layer of conveyer's the upper and lower floor, the equipartition intercommunication is provided with a plurality of aeration joints on the closing plate, aeration joint and external air feed assembly intercommunication, air feed assembly includes at least air-blower, heat exchanger and steady gas pitcher, air is let in from aeration joint after the temperature of air regulation, afterwards air lets in the fresh leaf of tiling from ventilative lug, the top of spreading and airing room sets up the air exhauster, with spreading and airing indoor evaporating high humidity air discharge, compare in prior art, air flows through from between the fresh leaf, accelerate the evaporation of moisture in the fresh leaf, the air flow of initiative ventilation is big simultaneously, do benefit to the fresh leaf to scatter the grass smell fast, the cycle of spreading and airing is shortened to very big degree.
A rotary drum is arranged in the withering chamber, a central axis of the rotary drum penetrates through and is fixedly provided with a shaft tube, two ends of the shaft tube are rotatably installed through a frame, one end of the shaft tube is fixedly provided with a gear, and the shaft tube is connected with a chain through a motor in a transmission way;
the rotary drum is provided with a feed inlet, and the outer side of the feed inlet is provided with a sliding door in a sliding manner along the outer wall of the rotary drum for discharging fresh She Jin after spreading and airing;
a plurality of ventilation holes are uniformly distributed on the rotary drum, aeration holes are formed in the shaft tube, one end of the shaft tube is closed, the other end of the shaft tube is connected with a rotary joint, the rotary joint is also connected with an air supply assembly, and the regulated air is introduced into the rotary drum to accelerate withering;
the fluorescent lamp is arranged on the inner walls of the two ends of the rotating drum, the carbon brushes are arranged on the outer walls of the two ends of the rotating drum, the electrodes are arranged on the rack, the fluorescent lamp is electrically connected with the carbon brushes, electricity is taken from the electrodes through the carbon brushes, the rotating drum is in a simulated sunlight irradiation state, and the conversion of theaflavins is promoted.
A fresh leaf treatment method for black tea processing comprises the following steps:
step S1: spreading fresh leaves on a conveyor on the top layer through a feed hopper and a material guide plate, starting the conveyor to convey the fresh leaves She Yuhui, regulating air with the temperature of 20-22 ℃ in an air supply assembly, then introducing the air from an aeration joint through an air pipe, working by an exhaust fan, maintaining the humidity in a spreading and airing room to be 60% -70%, and spreading and airing the fresh leaves;
step S2: the fresh leaves after spreading and airing treatment are conveyed into the rotary drum through the jacking transfer machine and the feeding machine, air with the temperature of 28-32 ℃ is regulated in the air supply assembly, then the air is introduced into the rotary drum through the rotary joint, the fluorescent lamp is electrified to simulate sunlight irradiation, the rotary drum is driven by the motor to rotate, the fresh leaves slightly collide with each other, and the fresh leaves are subjected to withering treatment.
Further, the ratio of the air inlet amount to the total fresh leaves on the conveyor in the step S1 is 12-15m 3 And (3) per kg, spreading and airing the fresh leaves on a conveyor for 80-100min.
Further, the ratio of the air inlet amount in the step S2 to the fresh leaves in the rotary drum is 20-25m 3 The withering treatment time of the fresh leaves in the rotary drum is 1.5-2h.
Further, the total illumination intensity of the fluorescent lamp is 5000-10000lx.
The invention has the beneficial effects that:
1. the invention provides a fresh leaf treatment device, which is provided with a spreading and airing chamber and a plurality of withering chambers, so as to realize automatic running water processing; the spreading and airing room is internally provided with a roundabout conveying and spreading and airing conveyor, the surface of a belt of the conveyor is provided with a hemispherical ventilation convex block, regulated and controlled air is introduced from a gap at the bottom of the fresh leaves, and the air flows through the fresh leaves to accelerate the evaporation of water in the fresh leaves and the emission of grass smell; in the withering room, ventilation is carried out from the middle part of the rotary drum, and the withering process is accelerated by matching with rotation fixation and simulated sunlight irradiation; in addition, the spreading and airing room and the plurality of withering rooms in the device all belong to relatively independent spaces, and the precision of quality control is facilitated, so that the treatment of fresh leaves is not limited by natural weather any more.
2. The invention also provides a set of treatment method, which can finish the effective treatment of the fresh leaves in about 3 hours in total, so that the treatment time of the fresh leaves is shortened by more than 40 percent.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a fresh leaf processing device for black tea processing;
FIG. 2 is a schematic view of the internal structure of the spreading and airing room of the invention;
FIG. 3 is a schematic view of a partial structure of the conveyor of the present invention;
fig. 4 is a schematic view of the structure of the drum of the present invention.
In the figure:
11. spreading and airing the room; 12. a feed hopper; 13. a feeder; 14. a withering chamber; 15. jacking the transfer machine; 21. an exhaust fan; 22. a conveyor; 31. a ventilation bump; 32. an aeration joint; 41. a rotating drum; 42. ventilation holes; 43. a sliding door; 44. and (5) rotating the joint.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The embodiment provides a fresh leaf processing device for black tea processing, referring to fig. 1-4, the device comprises a spreading and airing room 11 and a plurality of withering rooms 14, a jacking transfer machine 15 and a feeding machine 13 are arranged between the spreading and airing room 11 and the plurality of withering rooms 14, the jacking transfer machine 15 is used for reversing, the fresh leaves after spreading and airing are distributed and fed into each feeding machine 13, and then the fresh leaves are respectively transferred into the withering rooms 14;
the spreading and airing room 11 is internally provided with a plurality of layers of conveyors 22 from top to bottom, the adjacent conveyors 22 are distributed in a staggered way, the number of layers of the conveyors 22 and the width of the conveyors 22 are adjusted according to the actual processing amount, the processing amount is large, the processing efficiency is high, the number of layers of the conveyors 22 and the width of a belt of the conveyors 22 can be properly increased, the method is not particularly limited, the top of one end of the withering room 14 is provided with a feed hopper 12, the bottom of the feed hopper 12 is provided with a guide plate, the gap of the guide plate determines the thickness of a spreading material, the thickness of the spreading material is controlled to be proper 10cm, fresh leaves are collected from the feed hopper 12 and then spread on the conveyors 22 on the top layer through the guide plate, and then spreading and airing are transmitted in a roundabout way among the plurality of layers of conveyors 22, the traditional open spreading and airing processing mode is improved into a stacked arrangement processing mode, the method is high in processing field utilization rate, less in manpower input, and a relatively independent processing interval is formed, and the spreading and airing process parameters are controlled accurately;
a plurality of hemispherical ventilation convex blocks 31 are uniformly distributed on the belt of the conveyor 22, ventilation holes are formed in the ventilation convex blocks 31, a layer of ventilation space is formed between every two adjacent ventilation convex blocks 31 by fresh She Pingpu, and compared with the mesh belt or the airing mesh, the ventilation is higher, so that the problem that fresh She Chuxian red leaves and red stems at the bottom are caused by covering and burning in the conveying process of fresh leaves is avoided, and the appearance consistency of a finished product is influenced;
the upper and lower layers of every layer of conveyer 22 are sealed by adopting the closing plate, the equipartition intercommunication is provided with a plurality of aeration joints 32 on the closing plate, aeration joint 32 communicates with external air feed assembly, air feed assembly includes the air-blower at least, heat exchanger and steady gas pitcher, the air-blower drive air flows, the air carries out the heat transfer through the heat exchanger earlier, adopt water bath lamellar heat exchanger in this embodiment, do benefit to the regulation and control temperature, air after the temperature regulation gets into and stores in the steady gas pitcher that has the heat preservation, afterwards, let in between the upper and lower layers of conveyer 22 from aeration joint 32, the air lets in the fresh leaf of tiling from ventilative lug 31, the top of stand room 11 sets up air exhauster 21, high humidity air with evaporation in the stand room 11 is discharged, install humidity transducer in stand room 11, and link humidity transducer and air exhauster 21 through the controller, keep stand room 11 in relative steady state, compared with prior art, the air flows through between the fresh leaf, accelerate the evaporation of moisture in the fresh leaf, initiative air flow is big simultaneously, do benefit to the quick spread grass smell of fresh leaf, the stand smell of airing cycle is shortened greatly.
The inside of the withering chamber 14 is provided with a rotary drum 41, a central axis of the rotary drum 41 penetrates through and is fixedly provided with a shaft tube, two ends of the shaft tube are rotatably installed through a frame, one end of the shaft tube is fixedly provided with a gear, and the shaft tube is connected with a chain through a motor in a transmission way, when the withering treatment is carried out, fresh leaves collide with each other, the withering and softening of the fresh leaves are accelerated, the collision force is lighter, and buds She Posun cannot appear;
the rotary drum 41 is provided with a feed inlet, and the outer side of the feed inlet is provided with a sliding door 43 in a sliding manner along the outer wall of the rotary drum 41 for discharging fresh She Jin after spreading and airing;
a plurality of ventilation holes 42 are uniformly distributed on the rotary drum 41, aeration holes are formed on the shaft tube, the aeration holes are positioned in the rotary drum 41, one end of the shaft tube is closed, the other end of the shaft tube is connected with a rotary joint 44, the rotary joint 44 is also connected with an air supply assembly, and the regulated air is introduced into the rotary drum 41 to accelerate the withering;
fluorescent lamps are arranged on the inner walls of the two ends of the rotating drum 41, carbon brushes are arranged on the outer walls of the two ends of the rotating drum 41, electrodes are arranged on the rack, the fluorescent lamps are electrically connected with the carbon brushes, and electricity is taken from the electrodes through the carbon brushes, so that the rotating drum 41 is in a simulated sunlight irradiation state, and the conversion of theaflavins is accelerated.
Example 2
In this embodiment, the processing device provided in embodiment 1 is used to process fresh leaves, and referring to fig. 1 to fig. 4, the specific implementation process is as follows:
step S1: spreading fresh leaves on the conveyor 22 on the top layer through a hopper and a material guide plate, starting the conveyor 22 to convey the fresh leaves She Yuhui, setting the air temperature of an air supply assembly to be 20 ℃, then introducing the fresh leaves into the middle layer of the conveyor 22 from an aeration joint 32 through an air pipe, and setting the ratio of ventilation capacity to total fresh leaves on the conveyor 22 to be 12m 3 Kg, exhaust fan21 maintaining the humidity in the spreading and airing room 11 to be 60%, regulating the linear speed of the conveyor 22, and controlling the processing time of the fresh leaves in the spreading and airing room 11 to be 100min;
step S2: fresh leaves after spreading and airing treatment are conveyed into a rotary drum 41 through a jacking transfer machine 15 and a feeding machine 13, the air temperature of an air supply assembly is set to be 28 ℃, then the fresh leaves are introduced into the rotary drum 41 through a rotary joint 44, and the ratio of the introduced amount to the total fresh leaves in the interior is set to be 20m 3 And (3) carrying out sun light irradiation simulation by energizing a fluorescent lamp, controlling the total illumination intensity to be 5000lx, driving the rotary drum 41 to rotate by a motor, and carrying out withering treatment for 2 hours under the condition that the rotating speed is 30r/min, thereby finishing the treatment of fresh leaves.
Example 3
In this embodiment, the processing device provided in embodiment 1 is used to process fresh leaves, and referring to fig. 1 to fig. 4, the specific implementation process is as follows:
step S1: spreading fresh leaves on the conveyor 22 on the top layer through a hopper and a material guide plate, starting the conveyor 22 to convey the fresh leaves She Yuhui, setting the air temperature of an air supply assembly to be 22 ℃, then introducing the fresh leaves into the middle layer of the conveyor 22 from an aeration joint 32 through an air pipe, and setting the ratio of ventilation capacity to total fresh leaves on the conveyor 22 to be 15m 3 The exhaust fan 21 maintains the humidity in the spreading and airing room 11 to be 70%, the linear speed of the conveyor 22 is regulated and controlled, and the processing time of the fresh leaves in the spreading and airing room 11 is controlled to be 80min;
step S2: fresh leaves after spreading and airing are conveyed into a rotary drum 41 through a jacking transfer machine 15 and a feeding machine 13, the air temperature of an air supply assembly is set to be 32 ℃, then the fresh leaves are introduced into the rotary drum 41 through a rotary joint 44, and the ratio of the introduced amount to the total fresh leaves in the interior is set to be 25m 3 And/kg, the fluorescent lamp is electrified to simulate sunlight irradiation, the total illumination intensity is controlled to 10000lx, the motor is used for driving the rotary drum 41 to rotate, the rotating speed is 50r/min, and the fresh leaves are subjected to withering treatment for 1.5h under the condition, so that the fresh leaves are treated.
Comparative example 1
The comparative example is a fresh leaf treatment method in the prior art, and the specific implementation process is as follows:
step 1: manually spreading fresh leaves in a drying net, controlling the spreading thickness to be about 8cm, arranging the drying net on a drying rack, controlling ventilation in a factory, spreading and drying for 2h, manually grabbing the leaves and turning over and drying for 2 times during the spreading and drying process;
step 2: and collecting and spreading the fresh leaves after spreading and airing treatment in a withering tank, and introducing hot air into the withering tank, wherein the temperature of the hot air is 30 ℃, and the withering time is 3.5 hours, so that the treatment of the fresh leaves is completed.
The fresh leaves treated in example 2, example 3 and comparative example 1 were subjected to content determination, and specific test items and test criteria are as follows:
water-soluble pectin: measuring by adopting a precipitation method;
total water soluble carbohydrates: measuring by adopting an anthrone colorimetric method;
total free amino acids: measured according to GB/T8914-1987 standard;
polyphenols: measured according to GB/T8913-1987 standard;
the specific test data are shown in table 1:
TABLE 1
As can be seen from the data in Table 1, the total amount of water-soluble pectin, total water-soluble carbohydrate and free amino acid in the treated tea leaves of example 2 and example 3 was similar to that of comparative example 1 and slightly greater than that of comparative example 1, polyphenols were similar to that of comparative example 1 and slightly lower than that of comparative example 1, and as described in the above data, the fresh leaves of example 2 and example 3 were treated similarly to comparative example 1 with slightly greater withering than that of comparative example 1, wherein the time period of example 2 was 3.67 hours, the time period of example 3 was 2.83 hours, the time period of comparative example 1 was 5.5 hours, and the treatment time of the fresh leaves of the present invention was greatly shortened at the same treatment level.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is merely illustrative and explanatory of the principles of the invention, as various modifications and additions may be made to the specific embodiments described, or similar thereto, by those skilled in the art, without departing from the principles of the invention or beyond the scope of the appended claims.
Claims (9)
1. Fresh leaf processing apparatus is used in black tea processing, including stand room (11) and a plurality of room (14) that withers, stand and be provided with jacking transfer machine (15) and feeder (13) switching-over pay-off, its characterized in that between room (11) and the room (14) that withers:
a plurality of layers of conveyors (22) which are staggered are arranged in the spreading and airing room (11) from top to bottom, a plurality of hemispherical ventilation convex blocks (31) are uniformly distributed on a belt of the conveyors (22), ventilation holes are formed in the ventilation convex blocks (31), sealing plates are adopted between the upper layer and the lower layer of each layer of conveyor (22), and aeration connectors (32) are uniformly distributed and communicated on the sealing plates;
a rotary drum (41) is arranged in the withering chamber (14), a plurality of ventilation holes (42) are uniformly distributed on the rotary drum (41), a shaft tube is fixedly arranged in the center of the rotary drum (41) in a penetrating mode, the shaft tube is positioned in the rotary drum (41) and provided with aeration holes, one end of the shaft tube is closed, and the other end of the shaft tube is connected with a rotary joint (44).
2. A fresh leaf processing apparatus for black tea processing according to claim 1, wherein: the aeration joint (32) and the rotary joint (44) are both communicated with an air supply assembly, and the air supply assembly at least comprises a blower, a heat exchanger and a stable air tank.
3. A fresh leaf processing apparatus for black tea processing according to claim 1, wherein: an exhaust fan (21) is arranged at the top of the spreading and airing chamber (11) and used for regulating and controlling the humidity in the spreading and airing chamber (11).
4. A fresh leaf processing apparatus for black tea processing according to claim 1, wherein: the two ends of the shaft tube are rotatably installed with a frame arranged in the withering chamber (14), and one end of the shaft tube is fixed with a gear and is connected with a motor in a transmission way through a chain.
5. A fresh leaf processing apparatus for black tea processing according to claim 4, wherein: fluorescent lamps are arranged on the inner walls of the two ends of the rotary drum (41), carbon brushes are arranged on the outer walls of the two ends of the rotary drum (41), electrodes are arranged on the rack, the fluorescent lamps are electrically connected with the carbon brushes, and electricity is taken from the electrodes through the carbon brushes.
6. A fresh leaf treatment method for black tea processing is characterized in that: the treatment of fresh leaves with the device according to any one of claims 1 to 5, comprising in particular the steps of:
step S1: introducing fresh leaves into a conveyor (22) for circuitous conveying, regulating air with the temperature of 20-22 ℃ in an air supply assembly, then introducing the air from an aeration joint (32) through an air pipe, operating an exhaust fan (21), maintaining the humidity in a spreading and airing chamber (11) to be 60-70%, and spreading and airing the fresh leaves;
step S2: the fresh leaves after spreading and airing treatment are led into a rotary drum (41), air with the temperature of 28-32 ℃ is regulated in an air supply assembly, then the fresh leaves are led into the rotary drum (41) through a rotary joint (44), a fluorescent lamp is electrified for irradiation, and a motor drives the rotary drum (41) to rotate, so that the fresh leaves are subjected to withering treatment under the mutual collision.
7. A method of processing fresh leaves for black tea according to claim 6, wherein: the ratio of the air inlet amount in the step S1 to the total fresh leaves on the conveyor (22) is 12-15m 3 And (3) per kg, spreading and airing the fresh leaves on a conveyor (22) for 80-100min.
8. A method of processing fresh leaves for black tea according to claim 6, wherein: the ratio of the air inlet amount in the step S2 to the fresh leaves in the rotary drum (41) is 20-25m 3 Kg, fresh leaves in a rotary drum(41) The inner withering treatment time is 1.5-2h.
9. A method of processing fresh leaves for black tea according to claim 6, wherein: the total illumination intensity of the fluorescent lamp is 5000-10000lx.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210194426.XA CN114617171B (en) | 2022-03-01 | 2022-03-01 | Fresh leaf treatment method and treatment device for black tea processing |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210194426.XA CN114617171B (en) | 2022-03-01 | 2022-03-01 | Fresh leaf treatment method and treatment device for black tea processing |
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| WO2015027262A1 (en) * | 2013-08-28 | 2015-03-05 | Johann Steiner | Soy toasting system |
| CN204104688U (en) * | 2014-08-06 | 2015-01-21 | 陈晓玲 | Novel tea deteriorating machine |
| CN106135490A (en) * | 2016-07-13 | 2016-11-23 | 正安县清新种养殖农民专业合作社 | Tea tedding device |
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| CN209300147U (en) * | 2019-01-03 | 2019-08-27 | 福建省政和县闽峰茶业有限公司 | A kind of tea leaf withering and the assembly line of drying |
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| CN211672242U (en) * | 2019-12-24 | 2020-10-16 | 英德市龙润农业发展有限公司 | Withering frame |
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| CN114617171A (en) | 2022-06-14 |
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Denomination of invention: A fresh leaf processing method and processing device for black tea processing Granted publication date: 20231013 Pledgee: Qimen County Sub branch of Postal Savings Bank of China Co.,Ltd. Pledgor: ANHUI KEEMUN BLACK TEA DEVELOPMENT Co.,Ltd. Registration number: Y2024980023468 |
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