A black tea and yellow tea fermentation integrated room

Abstract

The invention discloses an integrated fermentation room for black tea and yellow tea, which belongs to the field of tea production and comprises a box body, wherein a plurality of support frames are arranged in the box body, a plurality of partitions are arranged on the support frames, a heat preservation layer is arranged in the box body, a holding piece for spreading tea leaves is arranged on the bottom partition of the partition of the support frame, a spreading piece for spreading the tea leaves on the holding piece is arranged on the upper side of the holding piece, and one device has multiple uses and a wide range of use. The heat preservation effect of the device is greatly improved by adding a heat preservation layer and a hot air circulation piece, and the energy consumption is reduced. The tea leaves can also be turned over during fermentation, so as to prevent the situation that the fermentation degrees of the tea leaves in the upper layer and the tea leaves in the lower layer are different. The specific fermentation conditions of the tea leaves can be known in real time through the arranged monitor, so as to facilitate the control of the quality of the tea leaves.

Description

Technical Field

[0001] The invention belongs to the field of tea processing, in particular to a black tea and yellow tea fermentation integrated chamber. Background Art

[0002] Tea is a traditional beverage in our country, and there are many types of tea. Therefore, the production processes and equipment of various types of tea will be different. At present, the equipment for making different types of tea is generally a single dedicated equipment, which does not have much ductility when used.

[0003] In the production process of fermented tea, fermentation is the key control point of the quality of the entire tea. However, many fermentation equipment currently have poor sealing and thermal insulation performance when fermenting tea, which leads to increased energy consumption of the equipment, and the environmental control inside the equipment cannot achieve the actual required effect. Traditional tea fermentation equipment is made of wood, which reduces the life of the equipment, and a large number of bacteria will breed after long-term use.

[0004] During the fermentation process of tea, the actual fermentation situation of the tea cannot be controlled, which can easily cause over-fermentation or under-fermentation. The thickness of the tea leaves in each part is not controlled during the fermentation, resulting in different fermentation conditions of the tea leaves in each part. Summary of the invention

[0005] The purpose of the present invention is to solve the above problems and provide a black tea and yellow tea fermentation integrated chamber, which is convenient for flattening and evenly spreading the tea leaves, controlling the fermentation environment and ensuring the fermentation quality.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is: a black tea and yellow tea fermentation integrated chamber, including a box body, a plurality of support frames are arranged in the box body, a plurality of partitions are arranged on the support frames, a heat preservation layer is arranged in the box body, a holding piece for spreading tea leaves is arranged on the bottom partition of the partition of the support frame, a spreading piece for spreading the tea leaves on the holding piece is arranged on the upper side of the holding piece, a driving mechanism for driving the spreading piece to move and spread the tea leaves is connected to the spreading piece, the driving mechanism is connected to the upper partition of the partition on the support frame, and the spreading piece and the spreading piece arranged on the spreading piece The lower protruding part on the material spreading part is hollow and connected with the outside world through a pipe, and oxygen can be supplied and exhaust can be exhausted to the tea leaves on the containing part through the material spreading part, and a cylinder is provided on the lower protruding part of the material spreading part to wrap it, and the cylinder contacts with the tea leaves during spreading to spread the tea leaves evenly, and bristles are provided on the cylinder to prevent the lower protruding part of the material spreading part from being blocked, and a monitor for monitoring the tea leaves in the containing part is also provided on the upper partition plate of the partition of the support frame, and a hot air circulation part for regulating the inside of the box and an atomizer for regulating the humidity of the environment are provided on the box.

[0007] Furthermore, the driving mechanism includes a plurality of sliding seats slidably arranged on the upper partition of the partition of the support frame, the sliding seats are threadedly connected to threaded rods rotatably connected to the upper partition of the partition of the support frame, one of the sliding seats is movably connected to the monitor, and a lifting seat is slidably arranged on the other sliding seats, the lifting seat and the material spreading member slide against each other, and a vibration source for driving the material spreading member to vibrate is fixedly arranged on the material spreading member.

[0008] Furthermore, an exhaust port is fixedly arranged on the top of the box body, a cover capable of sealing the exhaust port is slidably arranged in the exhaust port, a permanent magnet is arranged on the cover, an electromagnet corresponding to the cover is fixedly arranged on the box body, and an exhaust fan is arranged in the exhaust port.

[0009] Furthermore, a rotating shaft is rotatably arranged on the thickness direction of the upper partition of the compartment on the support frame, and a rotating wheel is rotatably arranged on the length direction thereof, the rotating wheel and the rotating shaft are connected by a gear, a threaded rod is threadedly connected on the rotating shaft, and the threaded rod and the containing member slide relative to each other.

[0010] Furthermore, a control box is arranged on the outside of the box body, a temperature / humidity detection component is arranged inside the box body, and a signal connection is provided between the control box and the temperature / humidity detection component.

[0011] Furthermore, a plurality of fans connected to the upper connected pipes are arranged on the outer side of the box, one of the fans supplies air into the box, and the other fans exhaust air from the box to the outside.

[0012] Furthermore, the fermentation process of yellow tea is as follows:

[0013] (5) Loading: feeding tea leaves onto the container;

[0014] (6) Flattening: Control the vibration source to start, so that the vibration source drives the spreading part to vibrate and flatten the tea leaves on the holding part to a thickness of within 20-30 cm;

[0015] (7) Fermentation: Control the temperature in the box at 35°C-60°C and the humidity at 40%-55% (dry fermentation);

[0016] Control the temperature in the box at 50℃-60℃ and the humidity at 65%-75% (wet fermentation);

[0017] (8) Discharging: taking the fermented tea leaves out of the container;

[0018] The fermentation process of black tea is as follows:

[0019] (5) Loading: feeding tea leaves onto the container;

[0020] (6) Flattening: Control the vibration source to start, so that the vibration source drives the spreading part to vibrate and flatten the tea leaves on the holding part to a thickness of within 10-20 cm;

[0021] (7) Fermentation: Control the temperature in the box at 25°C-30°C and the humidity at 95%-99%, start the fan that supplies air to the box, and control the oxygen supply to the box;

[0022] (8) Discharging: First, control the fan that exhausts air to the outside of the box to open, exhaust air outward, control the cover to open, start the exhaust fan, and return the temperature and humidity in the box to normal room temperature conditions. Then take the fermented tea out of the container.

[0023] Furthermore, the fermentation process of yellow tea also includes the step of withering the tea leaves before the feeding step: frying and heating the tea leaves to 80° C., and rolling and drying the tea leaves after the discharging step.

[0024] Furthermore, the fermentation process of black tea also includes withering and rolling the tea leaves before the loading step, and drying the tea leaves after the discharging step.

[0025] Beneficial effects of the present invention: The present invention provides an integrated fermentation room for black tea and yellow tea. 1. One device has multiple uses. By controlling the environment inside the box, it can realize the fermentation process of various teas and has a wide range of uses.

[0026] 2. By adding an insulation layer and hot air circulation parts, the insulation effect of the equipment is greatly improved. It only takes 5 minutes to heat 100 kilograms of tea to the same temperature for fermentation. Compared with the equipment on the market that takes 10 minutes, it can not only reduce the fermentation time, but also reduce energy consumption.

[0027] 3. When the tea leaves are ready to ferment, all parts of the tea leaves on the container are flattened and spread evenly to ensure the fermentation effect of all parts of the tea leaves during fermentation. The tea leaves can also be turned over during fermentation to prevent the situation where the upper and lower layers of tea leaves have different fermentation degrees. The specific fermentation conditions of the tea leaves can be known in real time through the set monitor, which is convenient for controlling the quality of the tea leaves.

[0028] 4. When the tea leaves are fermenting, oxygen and air can be transported to the tea leaves, so that the tea leaves can ferment normally and ensure the fermentation quality. After the tea leaves are fermented, moisture, heat and air can be quickly discharged to the outside of the box, so that the fermentation environment of the tea leaves can be quickly converted to a normal room temperature environment, which can prevent the tea leaves from over-fermenting and facilitate the control of the fermentation quality of the tea leaves. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0030] Figure 2 for Figure 1 Schematic cross-sectional view along the AA direction.

[0031] Figure 3 for Figure 1 Schematic diagram of the local enlarged structure at point B in the middle.

[0032] Figure 4 for Figure 2 Schematic diagram of the local enlarged structure at point C in the middle.

[0033] Figure 5 for Figure 2 Schematic diagram of the local enlarged structure at point D in the middle.

[0034] Figure 6 for Figure 3 Schematic diagram of the local enlarged structure at point E in the middle.

[0035] Figure 7 This is the process flow chart for black tea and yellow tea.

[0036] The text labels in the figure are as follows: 10. box body; 11. support frame; 12. insulation layer; 13. holding part; 14. material spreading part; 15. cylinder; 16. bristles; 17. monitor; 18. hot air circulation part; 19. atomizer; 20. sliding seat; 21. lifting seat; 22. vibration source; 23. exhaust port; 24. cover; 25. electromagnet; 26. exhaust fan; 27. rotating wheel; 28. rotating shaft; 29. ​​threaded rod; 30. control box; 32. fan. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the protection scope of the present invention.

[0038] like Figure 1-Figure 7As shown, the specific structure of the present invention is: a black tea and yellow tea fermentation integrated chamber, including a box body 10, two left and right support frames 11 are arranged in the box body 10, three partitions are arranged on the support frame 11, a heat preservation layer 12 is arranged in the box body 10, the filling material of the heat preservation layer 12 is heat preservation foam, a holding piece 13 for spreading tea leaves is arranged on the bottom partition of the partition of the support frame 11, the holding piece 13 is hingedly connected to the bottom partition of the partition of the support frame 11, a spreading piece 14 for spreading the tea leaves on the holding piece 13 is arranged on the upper side of the holding piece 13, a driving mechanism is connected to the spreading piece 14 to drive the spreading piece 14 to move and spread the tea leaves, the driving mechanism is connected to the upper partition of the partition on the support frame 11, and the spreading piece 14 and the lower side of the spreading piece 14 extend out The tea leaves on the container 13 are provided with a monitor 17 for monitoring the tea leaves in the container 13, and a heating strip is provided on the monitor 17 to prevent the lens of the monitor 17 from fogging. The box body 10 is provided with a hot air circulation part 18 for regulating the inside of the box body 10 and an atomizer 19 for regulating the humidity of the environment.

[0039] Preferably, the driving mechanism includes two left and right sliding seats 20 slidably arranged on the upper partition of the partition of the support frame 11, the sliding seat 20 is threadedly connected to a threaded rod rotatably connected to the upper partition of the partition of the support frame 11, and the threaded rod is fixedly connected to a motor that drives it to rotate, one of the sliding seats 20 is movably connected to the monitor 17, and a lifting seat 21 is slidably arranged on the other sliding seat 20, and a lifting motor is arranged on the sliding seat 20, and the output shaft of the lifting motor is threadedly connected to the lifting seat 21, the lifting seat 21 and the material spreading member 14 slide with each other, and a mechanism that can push the lifting seat 21 is arranged between each other. A reset spring is provided on the material spreading member 14, and a vibration source 22 is fixedly provided on the material spreading member 14 for driving the material spreading member 14 to vibrate. When spreading the tea leaves on the containing member 13, the vibration source 22 is first started, and the vibration source 22 drives the material spreading member 14 to vibrate left and right on the lifting seat 21, so that the material spreading member 14 drives the cylinder 15 to spread the tea leaves on the containing member 13 evenly. By starting the motor connected to the threaded rod on the sliding seat 20, the material spreading member 14 is driven to move on the containing member 13, so that the tea leaves on the containing member 13 can be flattened. By starting the large lifting motor connected to the sliding seat 20, the height of the material spreading member 14 in the up and down directions is controlled, so that the height of the tea leaves in the containing member 13 can be controlled.

[0040] Preferably, an exhaust port 23 is fixedly provided at the top of the box body 10, and the exhaust port 23 connects the environment inside the box body 10 with the environment outside the box body 10. A cover 24 capable of sealing the exhaust port 23 is slidably provided in the exhaust port 23, and a permanent magnet is provided on the cover 24. A pulling spring is connected between the cover 24 and the box body 10. An electromagnet 25 corresponding to the cover 24 is fixedly provided on the box body 10, and an exhaust fan 26 is provided in the exhaust port 23. When fermentation is completed or the environment inside the box body 10 needs to be cooled and dehumidified, the electromagnet 25 is energized, and the electromagnet 25 pushes the permanent magnet on the cover 24 to move, so that the cover 24 opens the exhaust port 23 upward, and the exhaust fan 26 is started to discharge the air in the box body 10 to the outside.

[0041] Preferably, a rotating shaft 28 is rotatably provided in the thickness direction of the upper partition of the compartment on the support frame 11, and a rotating wheel 27 is rotatably provided in the length direction thereof, the rotating wheel 27 and the rotating shaft 28 are connected by a gear, a threaded rod 29 is threadedly connected to the rotating shaft 28, the threaded rod 29 and the containing piece 13 slide with each other, when the fermented tea leaves need to be taken out from the containing piece 13, the rotating wheel 27 is rotated, the rotating wheel 27 drives the rotating shaft 28 to rotate, the rotation of the rotating shaft 28 drives the threaded rod 29 to move downward, the downward movement of the threaded rod 29 pushes the containing piece 13 to tilt, so that the tea leaves on the containing piece 13 can be easily taken out.

[0042] Preferably, a control box 30 is disposed on the outer side of the box body 10, and a temperature / humidity detection component is disposed inside the box body 10, and a signal connection is established between the control box 30 and the temperature / humidity detection component.

[0043] Preferably, a plurality of fans 32 connected to the upper connected pipes are arranged on the outer side of the box body 10 , wherein one of the fans 32 supplies air into the box body 10 , and the other fans 32 exhaust air from the box body 10 to the outside.

[0044] Preferably, the fermentation process of yellow tea is as follows:

[0045] (1) Loading: feeding tea leaves onto the container 13;

[0046] (2) Flattening: Controlling and starting the vibration source 22, so that the vibration source 22 drives the spreading member 14 to vibrate and flatten the tea leaves on the containing member 13 to a thickness within 20-30 cm;

[0047] (3) Fermentation: Control the temperature in the box 10 to be between 35° C. and 60° C., and the humidity to be between 40% and 55% (dry fermentation);

[0048] Control the temperature in the box 10 to be between 50°C and 60°C, and the humidity to be between 65% and 75% (wet fermentation);

[0049] (4) Discharging: taking out the fermented tea leaves;

[0050] The fermentation process of black tea is as follows:

[0051] (1) Loading: feeding tea leaves onto the container 13;

[0052] (2) Flattening: Controlling and starting the vibration source 22, so that the vibration source 22 drives the spreading member 14 to vibrate and flatten the tea leaves on the containing member 13 to a thickness within 10-20 cm;

[0053] (3) Fermentation: Control the temperature in the box 10 to be between 25°C and 30°C, the humidity to be between 95% and 99%, control the fan 32 for supplying air into the box 10 to start, and control the supply of oxygen into the box 10;

[0054] (4) Discharging: First, the fan 32 for exhausting air to the outside of the box 10 is controlled to open and exhaust air to the outside, the cover 24 is controlled to open, and the exhaust fan 26 is started to return the temperature and humidity in the box 10 to normal room temperature conditions, and then the fermented tea leaves are taken out.

[0055] Preferably, the fermentation process of yellow tea further comprises the step of withering the tea leaves before the feeding step: frying and heating the tea leaves to 80° C., and rolling and drying the tea leaves after the discharging step.

[0056] Preferably, the fermentation process of black tea further includes withering and rolling the tea leaves before the loading step, and drying the tea leaves after the discharging step.

[0057] The specific use method of the black tea and yellow tea fermentation integrated chamber of the present invention is as follows: first, the motor on the sliding seat 20 is started to drive the lifting seat 21 and the material spreading member 14 to lift upward, and the tea leaves to be fermented are placed on the containing member 13. Then, the sliding seat 20 drives the material spreading member 14 to move downward to a set height position of the tea leaves, and the material spreading member 14 is controlled to move on the upper side of the containing member 13, and the vibration source 22 is controlled to start, so that the vibration source 22 drives the material spreading member 14 to vibrate, thereby driving the material spreading member 14 to flatten the tea leaves on the containing member 13 and reach a required thickness.

[0058] The control box 30 controls the atomizer 19 and the hot air circulation part 18 to control the environment in the box 10. The atomizer 19 humidifies the environment in the box 10, and the hot air circulation part 18 heats the environment in the box 10 and circulates the internal air, so that the environment in the box 10 meets the conditions required by the tea leaves. The monitor 17 monitors and observes the tea leaves on the holding part 13 during fermentation, so as to monitor the quality of the tea leaves in real time.

[0059] When the environment in the box body 10 needs to be cooled and dehumidified, the electromagnet 25 is energized, so that the electromagnet 25 pushes the magnet on the cover 24 upward to move upward, so that the cover 24 opens the exhaust port 23 upward, and the exhaust fan 26 is started, so that the exhaust fan 26 drives the air in the box body 10 to be discharged.

[0060] When the tea leaves are fermented, the lifting motor on the sliding seat 20 is started, and the lifting motor drives the spreading member 14 to move upward, and the rotating wheel 27 is rotated, so that the rotating wheel 27 drives the rotating shaft 28 to rotate, and the rotating shaft 28 rotates to drive the threaded rod 29 to move downward, thereby driving the containing member 13 to tilt, so as to facilitate the fermented tea leaves to be taken out from the containing member 13.

[0061] Beneficial effects of the present invention: The present invention provides an integrated fermentation room for black tea and yellow tea. 1. One device has multiple uses. By controlling the environment in the box, it can realize the fermentation process of various teas and has a wide practical range.

[0062] 2. By adding an insulation layer and hot air circulation parts, the insulation effect of the equipment is greatly improved. It only takes 5 minutes to heat 100 kilograms of tea to the same temperature for fermentation. Compared with the equipment on the market that takes 10 minutes, it can not only reduce the fermentation time, but also reduce energy consumption.

[0063] 3. When the tea leaves are ready to ferment, all parts of the tea leaves on the container are flattened and spread evenly to ensure the fermentation effect of all parts of the tea leaves during fermentation. The tea leaves can also be turned over during fermentation to prevent the situation where the upper and lower layers of tea leaves have different fermentation degrees. The specific fermentation conditions of the tea leaves can be known in real time through the set monitor, which is convenient for controlling the quality of the tea leaves.

[0064] 4. When the tea leaves are fermenting, oxygen and air can be transported to the tea leaves, so that the tea leaves can ferment normally and ensure the fermentation quality. After the tea leaves are fermented, moisture, heat and air can be quickly discharged to the outside of the box, so that the fermentation environment of the tea leaves can be quickly converted to a normal room temperature environment, which can prevent the tea leaves from over-fermenting and facilitate the control of the fermentation quality of the tea leaves.

[0065] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0066] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above is only a preferred implementation of the present invention. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present invention.

Claims

1. A black tea and yellow tea fermentation integrated room, comprising a box body (10), wherein a plurality of support frames (11) are arranged inside the box body (10), and a plurality of partitions are arranged on the support frames (11), characterized in that: A heat-insulating layer (12) is provided in the box body (10), and a container (13) for spreading tea leaves is provided on the bottom partition of the partition of the support frame (11). A spreading member (14) for spreading the tea leaves on the containing member (13) is provided on the upper side of the containing member (13), and a driving mechanism for driving the spreading member (14) to move and spread the tea leaves is connected to the spreading member (14), and the driving mechanism is connected to the upper partition of the partition layer on the supporting frame (11). The inside of the spreading member (14) and the lower protruding portion arranged on the spreading member (14) are hollow and are connected to the outside through a pipeline. The spreading member (14) can supply oxygen and exhaust gas to the tea leaves on the containing member (13). The lower protruding portion of the spreading member (14) is provided with a cylinder (15) that wraps the spreading member. The cylinder (15) contacts the tea leaves during spreading and spreads the tea leaves evenly. The cylinder (15) is provided with bristles (16) to prevent the lower protruding portion of the spreading member (14) from being blocked. A monitor (17) for monitoring tea leaves in the container (13) is also provided on the upper partition of the partition layer of the support frame (11). The box body (10) is provided with a hot air circulation component (18) for regulating the interior of the box body (10) and an atomizer (19) for regulating the humidity of the environment; The driving mechanism comprises a plurality of sliding seats (20) slidably arranged on the upper partition of the partition of the support frame (11), the sliding seats (20) being threadedly connected to a threaded rod rotatably connected to the upper partition of the partition of the support frame (11), one of the sliding seats (20) being movably connected to the monitor (17), and a lifting seat (21) being slidably arranged on the other sliding seats (20), the lifting seat (21) and the material spreading member (14) slidingly sliding with each other, and a vibration source (22) for driving the material spreading member (14) to vibrate is fixedly arranged on the material spreading member (14); An exhaust port (23) is fixedly arranged on the top of the box body (10), a cover (24) capable of sealing the exhaust port (23) is slidably arranged inside the exhaust port (23), a permanent magnet is arranged on the cover (24), an electromagnet (25) corresponding to the cover (24) is fixedly arranged on the box body (10), and an exhaust fan (26) is arranged inside the exhaust port (23); A plurality of fans (32) connected to the upper connected pipe are arranged outside the box (10), one of the fans (32) supplies air into the box (10), and the other fans (32) exhaust air from the box (10) to the outside.

2. The black tea and yellow tea fermentation integrated room according to claim 1, characterized in that: A rotating shaft (28) is rotatably arranged on the upper partition of the compartment on the support frame (11) in the thickness direction, and a rotating wheel (27) is rotatably arranged in the length direction thereof; the rotating wheel (27) and the rotating shaft (28) are connected via a gear; a threaded rod (29) is threadedly connected to the rotating shaft (28); the threaded rod (29) and the containing member (13) slide relative to each other.

3. The black tea and yellow tea fermentation integrated room according to claim 1, characterized in that: A control box (30) is arranged outside the box body (10), a temperature / humidity detection component is arranged inside the box body (10), and a signal connection is established between the control box (30) and the temperature / humidity detection component.

4. The process for fermenting yellow tea in an integrated chamber according to any one of claims 1 to 3, characterized in that: The following steps are involved: (1) Loading: feeding tea leaves onto the container (13); (2) Flattening: controlling and starting the vibration source (22) so that the vibration source (22) drives the spreading member (14) to vibrate and flatten the tea leaves on the containing member (13) to a thickness within 20-30 cm; (3) Fermentation: controlling the temperature in the box (10) to be between 35°C and 60°C and the humidity to be between 40% and 55%, or controlling the temperature in the box (10) to be between 50°C and 60°C and the humidity to be between 65% and 75%; (4) Discharging: taking out the fermented tea leaves from the container (13).

5. The process according to claim 4, characterized in that: The fermentation process of yellow tea further includes withering the tea leaves before the feeding step, and rolling and drying the tea leaves after the discharging step.

6. The process for fermenting black tea in an integrated chamber according to any one of claims 1 to 3, characterized in that: The following steps are involved: (1) Loading: feeding tea leaves onto the container (13); (2) Flattening: controlling and starting the vibration source (22) so that the vibration source (22) drives the spreading member (14) to vibrate and flatten the tea leaves on the containing member (13) to a thickness within 10-20 cm; (3) Fermentation: controlling the temperature in the box (10) to be between 25°C and 30°C, and the humidity to be between 95% and 99%, controlling the fan (32) for supplying air into the box (10) to start, and controlling the supply of oxygen into the box (10); (4) Discharging: First, the fan (32) for exhausting air to the outside of the box (10) is controlled to open and exhaust air to the outside, the cover (24) is controlled to open, and the exhaust fan (26) is started to return the temperature and humidity in the box (10) to normal room temperature conditions, and then the fermented tea is taken out from the container (13).

7. The process according to claim 6, characterized in that: The fermentation process of black tea further includes withering and rolling the tea leaves before the feeding step, and drying the tea leaves after the discharging step.

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