CN114617171A - Processing method and processing device for fresh leaves for black tea processing - Google Patents
Processing method and processing device for fresh leaves for black tea processing Download PDFInfo
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- CN114617171A CN114617171A CN202210194426.XA CN202210194426A CN114617171A CN 114617171 A CN114617171 A CN 114617171A CN 202210194426 A CN202210194426 A CN 202210194426A CN 114617171 A CN114617171 A CN 114617171A
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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
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- 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
Abstract
The invention relates to a fresh leaf processing method and a processing device for black tea processing, belonging to the technical field of black tea production, wherein a spreading and drying chamber and a plurality of withering chambers are arranged in the device, so as to realize automatic water flow processing, wherein a conveyor for roundly conveying and spreading and drying is arranged in the spreading and drying chamber, hemispherical air-permeable bumps are arranged on the surface of a belt of the conveyor, adjusted air is introduced from gaps at the bottoms of the fresh leaves, and flows through between the fresh leaves, so that the evaporation of water in the fresh leaves and the emission of grass smell are accelerated; ventilating from the middle part of the rotary drum in the withering chamber, and accelerating the withering process by matching with rotary green-touching and simulated sunlight irradiation; in addition, the spreading and drying room and the plurality of withering rooms in the device belong to relatively independent spaces, so that the precision of quality regulation and control is facilitated, and the fresh leaves are not limited by natural weather any more; the invention also provides a set of treatment method, the effective treatment of the fresh leaves can be completed within 2.83 hours, and the treatment time of the fresh leaves is shortened by over 40 percent.
Description
Technical Field
The invention belongs to the technical field of black tea production, and particularly relates to a method and a device for processing fresh leaves for black tea processing.
Background
The black tea belongs to the whole fermentation tea, is prepared by using proper tea tree bud leaves as raw materials and refining the tea through the processes of withering, rolling, fermentation, drying and the like, and is named because the tea soup and the leaf bottom color of the dry tea brewed are red.
Withering is a key process in the processing technology of black tea, and is related to the subsequent process progress, effect and quality; in the prior art, in order to improve the quality of tea leaves, a spread drying-withering process is generally adopted, wherein the spread drying is to spread fresh leaves which are just picked for a period of time to dissipate partial water in the fresh leaves, the fresh leaves enter the next tea making procedure after becoming soft, and the withering is to gradually wither the fresh leaves by airing or blowing indoor hot air, so that macromolecules in the fresh leaves are gradually decomposed and converted;
among the prior art, to the spreading and drying in the air of fresh leaf mainly adopt and dry in the air the net and hold fresh leaf, carry out artifical flap leaf spreading and drying in the air, the withering generally uses the withering trough to handle, prior art mainly has following problem to the processing of fresh leaf:
1. spreading and drying treatment time is generally 2-3h, withering treatment time is generally 3-5h, and the overall treatment time is long;
2. the treatment of fresh leaves is generally carried out in an open environment, is difficult to accurately regulate and control and is limited by weather conditions.
Disclosure of Invention
In order to solve the technical problems mentioned in the background technology, the invention provides a method and a device for processing fresh leaves for black tea processing.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides a black tea processing is with bright leaf processing apparatus, includes the room of drying in the air and a plurality of room that withers, is provided with jacking between the room of drying in the air and a plurality of room that withers and carries machine and feeder, carries out the switching-over through jacking and carries the machine, will dry in the air the treated bright leaf distribution and send into each feeder, later change over respectively into the room that withers and carry out the processing of withering.
The drying room is provided with a plurality of layers of conveyors from top to bottom, the adjacent conveyors are distributed in a staggered manner, the top of one end of the withering room is provided with a feed hopper, the bottom of the feed hopper is provided with a guide plate, fresh leaves are collected from the feed hopper and then are paved on the conveyor at the top layer through the guide plate, and then the fresh leaves are conveyed and dried in the air in a circuitous manner among the plurality of layers of conveyors.
The equipartition is provided with a plurality of hemispherical ventilative lugs on the belt of conveyer, has all seted up the gas pocket on the ventilative lug, and bright leaf tiling forms the ventilative space of one deck on adjacent ventilative lug between ventilative lug, and it is higher to compare in the guipure gas permeability, avoids the bright leaf to appear sealing and burning in transportation process, leads to the bright leaf of bottom to appear red leaf red stem problem, influences off-the-shelf outward appearance uniformity.
Adopt the closing plate to seal between every layer of conveyer's the last lower floor, the equipartition intercommunication is provided with a plurality of aeration connectors on the closing plate, aeration connector and external air feed subassembly intercommunication, the air feed subassembly includes the air-blower at least, heat exchanger and steady gas pitcher, let in from aeration connector after the temperature of air-conditioning, later the air lets in the bright leaf of tiling from ventilative lug, the top of stand airing room sets up the air exhauster, the high humidity air of evaporation in will-stand airing room discharges, compare in prior art, the air flows through from between the bright leaf, accelerate the evaporation of moisture in the bright leaf, the gas flow of initiative ventilation simultaneously is big, do benefit to the bright leaf and dispel the green grass smell fast, the shortening of very big degree is aired the cycle.
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 rack, and one end of the shaft tube is fixedly provided with a gear and is in transmission connection with a chain through a motor;
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 feeding and discharging the fresh leaves subjected to spreading and drying treatment;
a plurality of air holes are uniformly distributed on the rotary drum, aeration holes are formed in the shaft tube, the aeration holes are positioned in the rotary drum, 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 adjusted air is introduced into the rotary drum to accelerate withering;
fluorescent lamps are arranged on the inner walls of the two ends of the rotary drum, carbon brushes are arranged on the outer walls of the two ends of the rotary drum, 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 interior of the rotary drum is in a state of simulating sunlight irradiation, and the conversion of theaflavin is promoted.
A method for processing fresh leaves for black tea processing comprises the following steps:
step S1: spreading fresh leaves on a conveyor at the top layer through a feeding hopper and a material guide plate, starting the conveyor to convey the fresh leaves in a circuitous way, adjusting air with the temperature of 20-22 ℃ in an air supply assembly, then introducing the air from an aeration connector through an air pipe, working an exhaust fan, maintaining the humidity in a spreading and drying room to be 60% -70%, and spreading and drying the fresh leaves;
step S2: conveying the spread and dried fresh leaves into a rotary drum through a jacking transfer machine and a feeding machine, adjusting air with the temperature of 28-32 ℃ in an air supply assembly, introducing the air into the rotary drum through a rotary joint, electrifying a fluorescent lamp to simulate sunlight irradiation, driving the rotary drum to rotate by a motor, slightly colliding the fresh leaves with each other, and carrying out withering treatment on the fresh leaves.
Further, the ratio of the air input amount in the step S1 to the total fresh leaves on the conveyor is 12-15m3And/kg, spreading and drying the fresh leaves on a conveyor for 80-100 min.
Further, the ratio of the air input amount in the step S2 to the fresh leaves in the rotary drum is 20-25m3And/kg, the fresh leaves are withered in the rotary drum for 1.5-2 h.
Further, the total illumination intensity of the fluorescent lamp is 5000-.
The invention has the beneficial effects that:
1. the invention provides a fresh leaf processing device which is provided with a spreading and drying chamber and a plurality of withering chambers, and realizes automatic flow processing; the spreading and drying room is internally provided with a conveyor for roundly conveying and spreading and drying, the surface of a belt of the conveyor is provided with hemispherical breathable bumps, the regulated and controlled air is introduced from gaps at the bottoms of the fresh leaves, and the air flows through the fresh leaves, so that the evaporation of water in the fresh leaves and the emission of grass smell are accelerated; ventilating from the middle part of the rotary drum in the withering chamber, and accelerating the withering process by matching with rotary green-touching and simulated sunlight irradiation; in addition, the spreading and drying room and the plurality of withering rooms in the device belong to relatively independent spaces, so that the quality regulation and control precision is facilitated, and the fresh leaves are not limited by natural weather any more.
2. The invention also provides a set of treatment method, which can finish effective treatment of the fresh leaves within about 3 hours in total use, so that the treatment time of the fresh leaves is shortened by over 40 percent.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of a fresh leaf processing apparatus for black tea processing according to the present invention;
FIG. 2 is a schematic view of the internal structure of the cooling chamber of the present invention;
FIG. 3 is a schematic view of a portion 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 room; 12. a feed hopper; 13. a feeding machine; 14. a withering room; 15. jacking and transferring machine; 21. an exhaust fan; 22. a conveyor; 31. a venting boss; 32. an aeration joint; 41. a rotating drum; 42. air holes are formed; 43. a sliding door; 44. a rotary joint.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The embodiment provides a fresh leaf processing device for black tea processing, please refer to fig. 1-4, the device includes a spreading and drying 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 drying room 11 and the plurality of withering rooms 14, the direction is changed by the jacking transfer machine 15, the fresh leaves after spreading and drying processing are distributed and sent to each feeding machine 13, and then the fresh leaves are respectively transferred to the withering rooms 14;
the spreading and drying room 11 is provided with a plurality of layers of conveyors 22 from top to bottom, the adjacent conveyors 22 are distributed in a staggered manner, the number of the 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 the layers of the conveyors 22 and the width of the belt of the conveyors 22 can be properly increased, the embodiment 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 material guide plate, the gap of the material guide plate determines the thickness of spread materials, the thickness of the spread materials is generally controlled to be 10cm, fresh leaves are collected from the feed hopper 12 and then are spread on the conveyor 22 at the top layer through the material guide plate, then the fresh leaves are conveyed and dried in a circuitous manner among the plurality of layers of conveyors 22, the traditional open spreading and drying processing mode is improved to be the stacking and arranging processing mode, the utilization rate of a processing field is high, the manpower investment is low, and relatively independent processing intervals are formed, the method is favorable for accurately controlling the spreading and drying process parameters;
a plurality of hemispherical breathable lugs 31 are uniformly distributed on a belt of the conveyor 22, air holes are formed in the breathable lugs 31, fresh leaves are flatly laid on the adjacent breathable lugs 31, and a layer of breathable space is formed between the breathable lugs 31, so that compared with a mesh belt or an airing net, the air permeability is higher, the problem that the fresh leaves at the bottom are covered and burnt to cause the problem that the red leaves and the red stalks of the fresh leaves at the bottom influence the appearance consistency of a finished product in the conveying process is avoided;
the upper layer and the lower layer of each layer of the conveyor 22 are sealed by adopting a sealing plate, a plurality of aeration joints 32 are uniformly and communicatively arranged on the sealing plate, the aeration joints 32 are communicated with an external air supply component, the air supply component at least comprises an air blower, a heat exchanger and a stable air tank, the air blower drives air to flow, air exchanges heat through the heat exchanger, a water bath lamellar heat exchanger is adopted in the embodiment, the temperature is favorably regulated and controlled, the air after temperature regulation enters the stable air tank with a heat preservation layer for storage, then the air is introduced between the upper layer and the lower layer of the conveyor 22 from the aeration joints 32, the air is introduced into tiled fresh leaves from air permeable bumps 31, an exhaust fan 21 is arranged at the top of the cooling room 11, the high-humidity air evaporated in the cooling room 11 is exhausted, a humidity sensor is arranged in the cooling room 11, the humidity sensor and the exhaust fan 21 are linked through a controller, and the humidity in the cooling room 11 is maintained in a relatively stable state, compared with the prior art, the air flows through the fresh leaves, so that the evaporation of water in the fresh leaves is accelerated, meanwhile, the active ventilation air flow is large, the fresh leaves can be used for rapidly eliminating the green grass smell, and the spreading and drying period is greatly shortened.
A rotating drum 41 is arranged in the withering chamber 14, a central axis of the rotating drum 41 penetrates through and is fixedly provided with an axle tube, two ends of the axle tube are rotatably installed through a rack, one end of the axle tube is fixedly provided with a gear and is connected with the gear through a motor and a chain in a transmission manner, when withering treatment is carried out, fresh leaves collide with each other, withering and softening of the fresh leaves are accelerated, the collision force is light, and bud leaf damage cannot occur;
a feed inlet is formed in the rotary drum 41, and a sliding door 43 is slidably mounted on the outer side of the feed inlet along the outer wall of the rotary drum 41 and used for feeding and discharging fresh leaves subjected to spreading and drying treatment;
a plurality of air 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 adjusted air is introduced into the rotary drum 41 to accelerate withering;
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, so that the interior of the rotary drum 41 is in a sunlight irradiation simulation state, and the conversion of theaflavin is accelerated.
Example 2
In this embodiment, the processing device provided in embodiment 1 is used to process fresh leaves, please refer to fig. 1 to 4, and the specific implementation process is as follows:
step S1: spreading fresh leaves on the top conveyor 22 through a loading hopper and a material guide plate, starting the conveyor 22 to convey the fresh leaves in a circuitous way, setting the air temperature of an air supply component to be 20 ℃, then introducing the fresh leaves into the middle layer of the conveyor 22 from an aeration connector 32 through an air pipe, and setting the ratio of the air volume to the total fresh leaves on the conveyor 22 to be 12m3The exhaust fan 21 maintains the humidity in the spreading and drying room 11 to be 60 percent, the linear speed of the conveyor 22 is regulated, and the processing time of the fresh leaves in the spreading and drying room 11 is controlled to be 100 min;
step S2: conveying the spread and dried fresh leaves into a rotary drum 41 through a jacking transfer machine 15 and a feeder 13, setting the air temperature of an air supply component to be 28 ℃, then introducing the fresh leaves into the rotary drum 41 through a rotary joint 44, and setting the ratio of the introduction amount to the total inner fresh leaves to be 20m3And (2) electrifying a fluorescent lamp to simulate sunlight irradiation, controlling the total illumination intensity to be 5000lx, driving the rotary drum 41 to rotate by the motor at the rotating speed of 30r/min, and carrying out withering treatment for 2 hours under the state to finish the treatment of the fresh leaves.
Example 3
In this embodiment, the processing device provided in embodiment 1 is used to process fresh leaves, please refer to fig. 1 to 4, and the specific implementation process is as follows:
step S1: spreading fresh leaves on the top conveyor 22 through a loading hopper and a material guide plate, starting the conveyor 22 to convey the fresh leaves in a circuitous way, setting the air temperature of an air supply component to be 22 ℃, then introducing the fresh leaves into the middle layer of the conveyor 22 from an aeration connector 32 through an air pipe, setting the ratio of the air volume to the total fresh leaves on the conveyor 22 to be 15m3The exhaust fan 21 maintains the humidity in the spreading and drying room 11 to be 70 percent, the linear speed of the conveyor 22 is regulated, and the processing time of the fresh leaves in the spreading and drying room 11 is controlled to be 80 min;
step S2: conveying the spread and dried fresh leaves into a rotary drum 41 through a jacking transfer machine 15 and a feeder 13, setting the air temperature of an air supply component to be 32 ℃, then introducing the fresh leaves into the rotary drum 41 through a rotary joint 44, and setting the ratio of the introduction amount to the total inner fresh leaves to be 25m3And/kg, electrifying a fluorescent lamp to simulate sunlight irradiation, controlling the total illumination intensity to be 10000lx, driving the rotary drum 41 to rotate by the motor at the rotating speed of 50r/min, and withering for 1.5h under the state to finish the treatment of the fresh leaves.
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 the fresh leaves in a drying net, controlling the spreading thickness to be about 8cm, arranging the drying net on a drying rack, controlling the ventilation in a factory, spreading and drying for 2h, manually grabbing the leaves during the period, turning over and drying for 2 times, and spreading and drying the fresh leaves;
step 2: collecting and spreading the fresh leaves after spreading and drying treatment in a withering trough, introducing hot air into the withering trough, 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 content of the fresh leaves treated in the example 2, the example 3 and the comparative example 1 is measured, and the specific test items and the test standards are as follows:
water-soluble pectin: measuring by adopting a precipitation method;
total water soluble carbohydrates: adopting an anthrone colorimetric method for determination;
total amount of free amino acids: measured according to GB/T8914-1987;
polyphenols: measured according to GB/T8913-1987;
specific test data are shown in table 1:
TABLE 1
As can be seen from the data in Table 1, the total content of water-soluble pectin, total water-soluble carbohydrates and free amino acids in the tea leaves treated in the examples 2 and 3 is similar to that of the tea leaves treated in the comparative example 1 and is slightly larger than that of the tea leaves treated in the comparative example 1, and the total content of polyphenols is similar to that of the tea leaves treated in the comparative example 1 and is slightly lower than that of the tea leaves treated in the comparative example 1, and the fresh leaves treated in the examples 2 and 3 have the similar withering effect to that of the tea leaves treated in the comparative example 1, wherein the withering degree is slightly larger than that of the tea leaves treated in the comparative example 1, 3.67 hours are consumed in the example 2, 2.83 hours are consumed in the example 3, 5.5 hours are consumed in the comparative example 1, and the treatment time of the fresh leaves treated by the invention is greatly shortened under the same treatment degree.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to 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 invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. 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 exemplary and illustrative of the principles of the present invention and various modifications, additions and substitutions of the specific embodiments described herein may be made by those skilled in the art without departing from the principles of the present invention or exceeding the scope of the claims set forth herein.
Claims (9)
1. The utility model provides a black tea processing is with fresh leaf processing apparatus, includes stand sunning room (11) and a plurality of room (14) that withers, is provided with the jacking between stand sunning room (11) and room (14) that withers and moves machine (15) and feeder (13) switching-over pay-off, its characterized in that:
a plurality of layers of staggered conveyors (22) are arranged in the spreading and drying room (11) from top to bottom, a plurality of hemispherical ventilating lugs (31) are uniformly distributed on a belt of the conveyor (22), air holes are formed in the ventilating lugs (31), an upper layer and a lower layer of each layer of conveyor (22) are sealed by sealing plates, and aeration joints (32) are uniformly distributed and communicated on the sealing plates;
be provided with rotary drum (41) in room (14) withers, a plurality of bleeder vents (42) have been seted up to the equipartition on rotary drum (41), and the center of rotary drum (41) is run through and is fixedly provided with the central siphon, and the central siphon lies in the inside of rotary drum (41) and has seted up the aeration hole, and the one end of central siphon seals, and the other end is connected with 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 a gas supply assembly, and the gas supply assembly at least comprises a blower, a heat exchanger and a gas stabilizing tank.
3. A fresh leaf processing apparatus for black tea processing according to claim 1, wherein: the top of the cooling room (11) is provided with an exhaust fan (21) for regulating and controlling the humidity in the cooling room (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 arranged with the frame arranged in the withering chamber (14), and one end of the shaft tube is fixed with a gear and is connected with the motor through a chain in a transmission way.
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 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.
6. A method for processing fresh leaves for black tea processing is characterized by comprising the following steps: the treatment of fresh leaves with the device according to any one of claims 1 to 5, comprising in particular the following steps:
step S1: introducing the fresh leaves onto a conveyor (22) for circuitous conveying, adjusting air with the temperature of 20-22 ℃ in an air supply assembly, introducing the air from an aeration joint (32) through an air pipe, working an exhaust fan (21), maintaining the humidity in a spreading and drying room (11) to be 60% -70%, and spreading and drying the fresh leaves;
step S2: introducing the fresh leaves subjected to spreading and drying treatment into a rotary drum (41), adjusting air with the temperature of 28-32 ℃ in an air supply assembly, introducing the air into the rotary drum (41) through a rotary joint (44), electrifying and irradiating a fluorescent lamp, driving the rotary drum (41) to rotate by a motor, and carrying out withering treatment on the fresh leaves under mutual collision.
7. A method for processing fresh leaves for black tea processing according to claim 6, wherein the method comprises the following steps: the ratio of the air input amount in the step S1 to the total fresh leaves on the conveyor (22) is 12-15m3And/kg, spreading and drying the fresh leaves on a conveyor (22) for 80-100 min.
8. A method for processing fresh leaves for black tea processing according to claim 6, wherein the method comprises the following steps: the ratio of the air input amount in the step S2 to the fresh leaves in the rotary drum (41) is 20-25m3Kg, fresh leaves are withered in a rotating drum (41) for a treatment time of 1.5-2 h.
9. A method for processing fresh leaves for black tea processing according to claim 6, wherein the method comprises the following steps: the total illumination intensity of the fluorescent lamp is 5000-.
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| CN213756527U (en) * | 2020-08-31 | 2021-07-23 | 云南昆船设计研究院有限公司 | Automatic ridge-piling and spreading-drying equipment for Pu' er tea after pile fermentation |
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