Black tea making process and black tea making equipment

Abstract

The invention discloses a black tea making technology and making equipment thereof, and relates to the technical field of black tea making, the black tea making technology comprises the following steps: S1, withering: withering freshly picked tea leaves, and controlling the withering degree at 30%-40%; s2, performing rolling: putting the withered tea leaves into a rolling machine, and performing rolling; s3, performing fermentation: performing fermentation on the rolled tea leaves in an environment of 15-28 DEG C for 5-7 hours, and controlling the fermentation degree to be 60-80%; and S4, stir-frying: putting the fermented tea leaves into a stir-frying pan, continuously stir-frying for 1-2 hours, and controlling the water content of the stir-fried tea leaves within 6%. The black tea making equipment is used for a black tea making process, can be used for rolling tea leaves, and comprises a rolling disc device and a rolling barrel device. Black tea with brand new taste can be obtained, and the quality of the black tea is effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of black tea production, and in particular to a black tea production process and production equipment thereof. Background Art

[0002] Zhengshan Xiaozhong black tea, originated from Wuyi Mountain in Fujian Province, China, is a black tea with a long history and unique flavor. The production process of traditional Zhengshan Xiaozhong black tea mainly includes four processes: withering fresh leaves, rolling, fermentation, and drying.

[0003] In the traditional fermentation and drying process, the tea leaves are usually fermented for 8 hours at room temperature. After the tea leaves are fully fermented, they are placed in a dryer or a traditional "qinglou" for drying. However, the black tea produced by this production method is relatively simple in appearance and taste, and there is still room for improvement. Summary of the invention

[0004] In order to obtain black tea with a completely new flavor, the present application provides a black tea production process and a production device thereof.

[0005] In a first aspect, the present application provides a black tea production process, which adopts the following technical solution:

[0006] A black tea production process comprises the following steps:

[0007] S1: Withering: withering the freshly picked tea leaves, and controlling the withering degree to 30%-40%;

[0008] S2: rolling, placing the withered tea leaves into a rolling machine for rolling;

[0009] S3: fermentation, fermenting the rolled tea leaves at 15-28°C for 5-7 hours, and controlling the fermentation degree at 60%-80%;

[0010] S4: Stir-fry until dry. Put the fermented tea leaves into the wok and continue to stir-fry for 1-2 hours, and control the moisture content of the fried tea leaves within 6%.

[0011] By adopting the above technical scheme, the tea leaves are fermented for 5-7 hours under the environmental conditions of 15-28℃, and the fermentation degree is controlled at 50%-70%, so as to achieve incomplete fermentation; then, this part of the fermented tea leaves is put into a wok and quickly fried at high temperature, so that the surface of the tea leaves quickly loses moisture, and even produces slight carbonization, thereby giving the tea leaves a unique aroma of fried beans, while retaining its original longan soup flavor. The further frying process ensures that the tea leaves are dried to a moisture content of no more than 6%. In this process, the tea leaves continue to ferment slowly while being fried dry, and its internal chemical components continue to undergo chemical conversion in the state of water loss or evaporation, which promotes the optimized conversion of chemical substances. Finally, the resulting black tea presents a clear and bright soup color, a mellow and sweet taste, and forms a new black tea with a unique flavor.

[0012] Optionally, in the frying step S4, the frying process is carried out in a manner of alternating high temperature and low temperature, specifically in the order of high temperature, low temperature, high temperature again, and low temperature again; wherein the high temperature stage does not exceed 200°C, and the low temperature stage is not lower than 50°C.

[0013] In a second aspect, the present application provides a black tea production device, which adopts the following technical solution:

[0014] A black tea making device, used in the above-mentioned black tea making process, capable of rolling tea leaves, including a rolling plate device and a rolling barrel device;

[0015] The kneading plate device comprises a frame, a kneading plate and a cover body; the kneading plate is arranged on the top of the frame, the kneading plate has a kneading space opening upward, and the bottom of the kneading plate is provided with a discharge port communicating with the kneading space; the cover body is movably connected to the kneading plate, and the movement of the cover body can control the opening and closing of the discharge port;

[0016] The kneading disk device also includes a movable disk, a first driving member and a plurality of kneading convex strips; the movable disk is located below the kneading disk and is movably connected to the kneading disk in a vertical direction, and the first driving member can drive the movable disk to move relative to the kneading disk; the kneading convex strips are arranged above the movable disk, and the kneading disk is provided with a plurality of paving grooves that are adapted to and correspond to the kneading convex strips one by one. During the movement of the movable disk relative to the kneading disk, the kneading convex strips remain in cooperation with the corresponding paving grooves, and their ends remain located in the kneading space;

[0017] The kneading barrel device includes a kneading barrel, a second driving member, a transmission assembly and a pressure assembly; the transmission assembly is arranged on the top of the frame, the kneading barrel is connected to the transmission assembly and the bottom is located in the kneading space; the interior of the kneading barrel has a storage space for storing tea leaves, and the storage space is communicated with the kneading space; the second driving member can drive the transmission assembly to move, and the transmission assembly drives the kneading barrel to rotate relative to the kneading disk with the axis of the kneading disk as the rotation axis; the pressure assembly is arranged on the top of the kneading barrel, and can apply downward pressure to the tea leaves in the storage space.

[0018] By adopting the above technical solution, after the first driving member drives the movable disk to move and drives a number of kneading convex strips to move, it is convenient for the user to adjust the kneading force of the tea leaves, so that the tea leaves can be effectively kneaded with appropriate force according to the needs of the tea leaves, which can not only make the tea leaves fully curled and tightened, but also effectively avoid the tea leaves being broken due to excessive force, thereby effectively improving the quality of the tea leaves after kneading.

[0019] Optionally, the kneading plate device further includes a connecting plate and a plurality of elastic members;

[0020] The connecting disk is arranged between the kneading disk and the movable disk, and the plurality of kneading ridges are arranged on the connecting disk; the two ends of the elastic member are respectively connected to the movable disk and the connecting disk, and have a tendency to drive the connecting disk to move upward to the extreme position and maintain it; when the connecting disk moves upward to the extreme position, the end of the kneading ridge away from the connecting disk is located in the kneading space.

[0021] By adopting the above technical solution, after the first driving member drives the movable disk to move, the degree of compression of the multiple elastic members can be adjusted, thereby adjusting the force applied to the connecting disk, so that the multiple kneading ridges can remain partially located in the kneading space, so that the tea leaves can be stably kneaded, and at the same time, it can further facilitate the user to adjust the kneading force of the tea leaves.

[0022] Optionally, an auxiliary device is further included, wherein the auxiliary device includes an air blowing component, and the air blowing component includes a blower and an air blowing hose;

[0023] An air groove is provided on the movable disk, and a plurality of blowing holes communicated with the kneading space are provided on the kneading disk, and the plurality of blowing holes are all communicated with the air groove; the two ends of the blowing hose are respectively connected with the fan and the movable disk, and the end of the blowing hose away from the fan is communicated with the air groove.

[0024] By adopting the above technical solution, the air blowing of the blowing component can help the tea leaves to contact with the air, thereby effectively promoting the fermentation and oxidation of the tea leaves, and further improving the quality of the tea leaves after rolling.

[0025] Optionally, the auxiliary device also includes a temperature and humidity adjustment component, which includes a thermostat and a humidifier. The thermostat and the humidifier are both arranged on the fan and can adjust the temperature and humidity of the gas blown out by the fan.

[0026] By adopting the above technical solution, the user can conveniently adjust the temperature and humidity of the air blown into the rolling space, so that the tea leaves can be rolled under certain temperature and humidity conditions, thereby further improving the quality of the rolled tea leaves.

[0027] Optionally, the degree of communication between the air groove and the blowing hole gradually changes as the movable disk moves downward; when the movable disk moves downward to the extreme position, the degree of communication between the air groove and the blowing hole is the smallest; when the movable disk moves upward to the extreme position, the degree of communication between the air groove and the blowing hole is the largest.

[0028] By adopting the above technical scheme, when the tea leaves are rolled with less force, the gaps between the rolled tea leaves are larger, and the air with a certain temperature and humidity blown out with a smaller wind force can meet the needs of tea leaf rolling; when the tea leaves are rolled with greater force, the gaps between the rolled tea leaves are smaller, and the air with a certain temperature and humidity blown out with a greater wind force can meet the needs of tea leaf rolling; thereby, the energy utilization rate of the auxiliary device can be effectively improved, and the quality of tea leaf rolling can be effectively guaranteed.

[0029] Optionally, a plurality of the blowing holes correspond one-to-one to the spaces between a plurality of adjacent kneading ridges, and an end of the blowing hole away from the air groove faces toward the corresponding space between the adjacent kneading ridges.

[0030] By adopting the above technical scheme, the gas blown into the kneading space can facilitate the tea leaves located between adjacent kneading ridges to move toward the discharge port, which can not only improve the kneading effect of the tea leaves, but also reduce the probability of the tea leaves adhering to the kneading ridges of the kneading disk and being difficult to discharge.

[0031] Optionally, the inner wall at the bottom of the kneading space is tapered toward the discharge port.

[0032] By adopting the above technical scheme, the tea leaves in the kneading space can be further facilitated to move towards the discharge port under the action of its own gravity, thereby further improving the effect of kneading the tea leaves and further reducing the probability of the tea leaves adhering to the kneading convex strips of the kneading disk and being difficult to discharge.

[0033] Optionally, the kneading device further comprises a covering member, which is located above the air blowing hole and forms a cover above the space of the kneading convex strip close to one side of the air blowing hole.

[0034] By adopting the above technical solution, the covering member can guide the gas blown into the kneading space, so that the gas maintains a certain wind force and enters the space between the corresponding adjacent kneading ridges, thereby effectively improving the effect of the gas blowing the tea leaves.

[0035] In summary, the present application includes at least one of the following beneficial effects:

[0036] 1. It can effectively improve the appearance and taste of black tea, obtain black tea with a new taste, and further enhance the tea drinking experience of tea drinkers;

[0037] 2. It is convenient for users to adjust the rolling force of tea leaves during rolling, so as to effectively improve the quality of tea leaves after rolling according to the needs of tea leaves;

[0038] 3. It can facilitate users to create suitable air circulation conditions and a certain temperature and humidity environment for rolling tea leaves, so that the tea leaves can be rolled under more suitable conditions, thereby further improving the quality of the tea leaves after rolling;

[0039] 4. It can facilitate the tea leaves to move closer to the center of the rolling space during the rolling process, thereby effectively improving the effect of tea rolling and facilitating the discharge of tea leaves after rolling. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 is a schematic structural diagram of a black tea making device in Example 4;

[0041] Figure 2 yes Figure 1 Sectional view along line AA;

[0042] Figure 3 This is a schematic structural diagram of a black tea making device in Example 4 after omitting the barrel kneading device and part of the frame;

[0043] Figure 4 yes Figure 3 Cross-sectional view along line BB;

[0044] Figure 5 yes Figure 4 Enlarged view of point C in the middle;

[0045] Figure 6 yes Figure 4 Enlarged view of point D in the middle.

[0046] Explanation of the reference numerals: 1. kneading plate device; 11. frame; 12. kneading plate; 121. kneading space; 122. discharge port; 123. give way groove; 124. blowing hole; 13. cover body; 14. kneading convex strip; 15. connecting plate; 16. movable plate; 161. groove; 162. air groove; 17. elastic member; 18. first driving member; 19. covering member; 2. kneading barrel device; 21. kneading barrel; 211. storage space; 22. transmission assembly; 23. second driving member; 24. pressurizing assembly; 3. auxiliary device; 31. blowing assembly; 311. fan; 312. blowing hose; 32. temperature and humidity adjustment assembly; 321. thermostat; 322. humidifier. DETAILED DESCRIPTION

[0047] The following is combined with Figure 1-6 This application is described in further detail.

[0048] Embodiment 1:

[0049] A black tea production process comprises the following steps:

[0050] S1: Withering: withering the freshly picked tea leaves, and controlling the withering degree at 30%;

[0051] S2: rolling, placing the withered tea leaves in a rolling machine and rolling them for 10 minutes;

[0052] S3: fermentation, fermenting the rolled tea leaves at 15°C for 7 hours, and controlling the fermentation degree at 60%;

[0053] S4: Stir-frying, put the fermented tea leaves into a wok, stir-fry at 120°C, turn off the heat after the tea leaves are heated, continue to stir-fry until the temperature of the tea leaves reaches 52°C, add more heat and stir-fry until the frying temperature reaches 200°C, finally turn off the heat, continue to stir-fry until the temperature of the tea leaves reaches 50°C, take out, the moisture content of the obtained tea leaves is 4%, and the total time for frying to dry is 2 hours.

[0054] Embodiment 2:

[0055] A black tea production process comprises the following steps:

[0056] S1: Withering: withering the freshly picked tea leaves, and controlling the withering degree at 35%;

[0057] S2: rolling, placing the withered tea leaves in a rolling machine and rolling them for 10 minutes;

[0058] S3: fermentation, fermenting the rolled tea leaves at 25°C for 6 hours, and controlling the fermentation degree at 80%;

[0059] S4: Stir-frying, put the fermented tea leaves into the wok, stir-fry continuously at 180°C, turn off the heat after the tea leaves are heated, continue to stir-fry until the temperature of the tea leaves reaches 55°C, add more heat and stir-fry until the frying temperature reaches 195°C, finally turn off the heat, continue to stir-fry until the temperature of the tea leaves reaches 50°C, take out, the moisture content of the obtained tea leaves is 5%, and the total time for frying to dry is 1 hour.

[0060] Embodiment 3:

[0061] A black tea production process comprises the following steps:

[0062] S1: Withering: withering the freshly picked tea leaves, and controlling the withering degree at 40%;

[0063] S2: rolling, placing the withered tea leaves in a rolling machine and rolling them for 10 minutes;

[0064] S3: fermentation, fermenting the rolled tea leaves at 28°C for 6 hours, and controlling the fermentation degree at 80%;

[0065] S4: Stir-frying, put the fermented tea leaves into a wok, stir-fry at 160°C, turn off the heat after the tea leaves are heated, continue to stir-fry until the temperature of the tea leaves reaches 53°C, add more heat and stir-fry until the frying temperature reaches 200°C, finally turn off the heat, continue to stir-fry until the temperature of the tea leaves reaches 50°C, take out, the moisture content of the obtained tea leaves is 4%, and the total time for frying to dry is 1.5 hours.

[0066] Embodiment 4:

[0067] A black tea making device is used in a black tea making process as described in Examples 1-3 and can roll tea leaves.

[0068] Reference Figure 1 and Figure 2 The black tea making equipment includes a kneading plate device 1, a kneading barrel device 2 and an auxiliary device 3. The kneading plate device 1 and the kneading barrel device 2 cooperate to knead the tea leaves, and the auxiliary device 3 is used to create suitable air circulation conditions and a certain temperature and humidity environment during the kneading process of the tea leaves, so as to effectively improve the quality of the final tea leaves after kneading.

[0069] Reference Figure 3 and Figure 4 The kneading plate device 1 includes a frame 11, a kneading plate 12 and a cover 13.

[0070] The kneading plate 12 is a circular pancake-shaped structure as a whole, and is fixedly installed on the top of the frame 11 so that there is a certain distance between its bottom and the ground; when the frame 11 is stably placed on the ground, the kneading plate 12 is in a vertical position.

[0071] A kneading space 121 for kneading tea leaves is provided at the top of the kneading disk 12. The kneading space 121 is also in a circular pancake-like structure as a whole, and its axis coincides with the axis of the kneading disk 12. The kneading space 121 passes through the top of the kneading disk 12 along its own axis to form an opening.

[0072] A discharge port 122 is provided at the bottom of the kneading disk 12 for discharging the tea leaves after kneading. The overall shape of the discharge port 122 is also a circular cake-like structure, and its axis coincides with the axis of the kneading disk 12. One end of the discharge port 122 is connected to the kneading space 121, and the other end passes through the bottom of the kneading disk 12 along its own axial direction to form an opening.

[0073] The cover 13 is a circular pancake-shaped structure as a whole and is adapted to the discharge port 122. It is installed at the bottom of the kneading disk 12 and is movably connected to the kneading disk 12. Controlling the movement of the cover 13 can control the opening and closing of the discharge port 122. In this embodiment, it is preferred that the cover 13 is movably connected to the kneading disk 12 by a rotational connection, and the rotation axis of the cover 13 is perpendicular to the axis of the kneading disk 12; when the cover 13 rotates to close the discharge port 122, it can be fixed relative to the kneading disk 12, and the surface of the top of the cover 13 will be connected to the inner wall of the bottom of the kneading space 121, and the surface of the top of the cover 13 has a plurality of convex strips for kneading tea leaves; since the cover 13 with the above-mentioned functions is a prior art in the art, it will not be described in detail here, and it is only briefly shown in the attached drawings.

[0074] Furthermore, in order to facilitate the discharge of the tea leaves from the discharge port 122 after kneading, the inner wall of the bottom of the kneading space 121 is preferably tapered towards the discharge port 122, so that the tea leaves in the kneading space 121 have a tendency to move towards the discharge port 122 under the action of their own gravity.

[0075] At this time, during the tea-leaf rolling process, the tea leaves that move out of the rolling area in the rolling space 121 can have a tendency to move back into the rolling area, thereby effectively improving the tea-leaf rolling effect and effectively reducing the probability that some tea leaves are not fully rolled. After the tea-leaf rolling is completed, the tea leaves have a tendency to move toward the discharge port 122, which can facilitate the user to gather the tea leaves for discharge, and effectively improve the discharge efficiency of the rolled tea leaves.

[0076] Reference Figure 1 and Figure 2 The kneading barrel device 2 includes a kneading barrel 21, a transmission component 22, a second driving component 23 and a pressurizing component 24.

[0077] The kneading barrel 21 is a hollow cylindrical structure as a whole, and has a storage space 211 for storing tea leaves inside. The storage space 211 is cylindrical in shape as a whole, and its axis coincides with the axis of the kneading barrel 21 , and openings are formed at both ends of the axis direction of the kneading barrel 21 .

[0078] The transmission assembly 22 is installed on the top of the frame 11, and the kneading barrel 21 is installed above the kneading disk 12 through the transmission assembly 22. At this time, the axis of the kneading barrel 21 is parallel to the axis of the kneading disk 12 and the axis of the kneading barrel 21 is eccentrically arranged relative to the axis of the kneading disk 12, and at this time, the storage space 211 is connected to the kneading space 121.

[0079] The second driving member 23 is fixedly mounted on the frame 11, and the second driving member 23 is connected to the transmission assembly 22, and can drive the transmission assembly 22 to move. In this embodiment, the second driving member 23 is preferably a servo motor, and the transmission assembly 22 is preferably a plurality of crank transmission structures. The second driving member 23 is connected to the transmission assembly 22 through a reducer, and the second driving member 23 can drive the kneading barrel 21 to perform circular motion with the axis of the kneading disk 12 as the axis through the transmission assembly 22, and the axis of the kneading disk 12 can pass through the storage space 211; since the second driving member 23 and the transmission assembly 22 with the above functions are both prior arts in the field, they are not described here in detail, and they are only briefly shown in the accompanying drawings.

[0080] The pressurizing component 24 is mounted on the transmission component 22 and is located at the top of the kneading barrel 21. It can enter the storage space 211 and apply a certain amount of pressure downward in the vertical direction to the tea leaves stored in the storage space 211, so that the tea leaves at the bottom of the storage space 211 can move relative to the kneading disk 12 along with the movement of the kneading barrel 21, so that the tea leaves are kneaded under a certain amount of pressure. In this embodiment, since the pressurizing component 24 with the above-mentioned function is a common prior art, it will not be described in detail here, and it is only briefly shown in the drawings.

[0081] Reference Figure 3 and Figure 4 The kneading plate device 1 also includes a plurality of kneading convex strips 14 for kneading the tea leaves, a connecting plate 15, a movable plate 16, a plurality of elastic members 17 and a first driving member 18.

[0082] The movable disk 16 is of a cylindrical structure as a whole, and is installed below the kneading disk 12; the movable disk 16 has a groove 161 that matches the bottom of the kneading disk 12, and the movable disk 16 is sleeved with the bottom of the kneading disk 12 through the groove 161. At this time, the axis of the movable disk 16 coincides with the axis of the kneading disk 12, and the movable disk 16 can move relative to the kneading disk 12 along its own axial direction while maintaining the sleeve fit with the kneading disk 12; the bottom of the movable disk 16 also has an opening to provide space for the cover body 13 to rotate.

[0083] The connecting disk 15 is an annular plate structure as a whole, which is installed between the kneading disk 12 and the movable disk 16, and is located in the groove 161 of the movable disk 16. During the movement of the movable disk 16 relative to the kneading disk 12, the connecting disk 15 remains in the groove 161, and the axis of the connecting disk 15 coincides with the axis of the movable disk 16.

[0084] A plurality of elastic members 17 are installed between the connecting disk 15 and the movable disk 16, and their two ends are fixedly connected to the connecting disk 15 and the movable disk 16 respectively, and can drive the connecting disk 15 to move upward relative to the movable disk 16 until it abuts against and maintains the kneading disk 12. In this embodiment, the elastic member 17 is preferably a compression spring; since the compression spring is a common prior art, it will not be described in detail here, and it is only briefly shown in the drawings.

[0085] The plurality of kneading ridges 14 are fixedly mounted on the top of the connecting disk 15 . The kneading ridges 14 are in a strip-like structure with an arc-shaped extension trajectory. The plurality of kneading ridges 14 are distributed in a circular array on the connecting disk 15 along the axis of the connecting disk 15 .

[0086] The kneading disc 12 is provided with a plurality of paving grooves 123 adapted to the kneading ridges 14, and the plurality of paving grooves 123 correspond to the plurality of kneading ridges 14. When the connecting disc 15 is kept in contact with the kneading disc 12 under the action of the plurality of elastic members 17, the plurality of kneading ridges 14 will keep penetrating and matching with the corresponding paving grooves 123, and the end of the kneading ridge 14 away from the connecting disc 15 will be located in the kneading space 121.

[0087] Reference Figure 1 and Figure 3The end of the kneading ridge 14 away from the connecting disk 15 has an arc surface, and the ends of the kneading ridges 14 away from the connecting disk 15 are all located in the same plane and the plane is perpendicular to the axis of the connecting disk 15, and the kneading barrel 21 maintains a certain distance from the kneading ridges 14 during the circular motion. During the circular motion of the kneading barrel 21 on the kneading disk 12, the tea leaves at the bottom of the storage space 211 can be contacted with the kneading ridges 14 in turn and kneaded, and part of the tea leaves will stay in the space formed between the adjacent kneading ridges 14 in the kneading space 121; the kneading ridges 14 are subjected to a downward force in the process of kneading the tea leaves, and have a tendency to drive the connecting disk 15 to move downward. At this time, the force of the elastic members 17 on the connecting disk 15 can keep the connecting disk 15 in contact with the kneading disk 12 or quickly reset after moving downward for a certain distance.

[0088] Reference Figure 2 and Figure 4 The first driving member 18 is installed below the movable disk 16 and is fixedly connected to the frame 11. The first driving member 18 can drive the movable disk 16 to move relative to the kneading disk 12, thereby adjusting the force of the plurality of elastic members 17 on the connecting disk 15. In this embodiment, the first driving member 18 is preferably a servo cylinder; since the servo cylinder is a common prior art, it will not be described in detail here, and it is only briefly shown in the drawings.

[0089] When the first driving member 18 drives the movable disk 16 to move upward to the extreme position, the force exerted by the plurality of elastic members 17 on the connecting disk 15 is maximum, so that the kneading ridges 14 exert the maximum kneading force on the tea leaves at this time; when a driving member drives the movable disk 16 to move downward to the extreme position, the force exerted by the plurality of elastic members 17 on the connecting disk 15 is minimum, so that the kneading ridges 14 exert the minimum kneading force on the tea leaves at this time.

[0090] Reference Figure 1 and Figure 4 The auxiliary device 3 includes an air blowing component 31 and a temperature and humidity adjustment component 32.

[0091] The air blowing assembly 31 includes a fan 311 and an air blowing hose 312. The fan 311 is installed below the kneading disk 12 and is fixedly connected to the bottom of the frame 11, and the two ends of the air blowing hose 312 are fixedly connected to the fan 311 and the movable disk 16 respectively. In this embodiment, the fan 311 can blow in external air through the air blowing hose 312, and the air blowing hose 312 can be bent and deformed; since the fan 311 and the air blowing hose 312 with the above functions are both common existing technologies, they will not be described here in detail, and they are only briefly shown in the drawings.

[0092] Reference Figure 5 and Figure 6, an air groove 162 is provided on the movable disk 16 on the peripheral groove wall of the groove 161, and the air groove 162 is communicated with the groove 161; the overall shape of the air groove 162 is an annular structure, and the axis of the air groove 162 coincides with the axis of the movable disk 16. A plurality of air blowing holes 124 are provided on the peripheral side of the kneading disk 12, and the air blowing holes 124 penetrate the kneading disk 12 and communicate with the kneading space 121, and the plurality of air blowing holes 124 are distributed in a circular array on the kneading disk 12 with the axis of the kneading disk 12 as the axis. In this embodiment, in order to reduce the probability of tea leaves in the kneading space 121 entering the air blowing holes 124, it is preferred that a filter is fixedly installed on one end of the air blowing holes 124 close to the kneading space 121.

[0093] During the movement of the movable disk 16 relative to the kneading disk 12, the air groove 162 remains in communication with the plurality of air holes 124, and the degree of communication between the air groove 162 and the plurality of air holes 124 changes with the movement of the movable disk 16. When the movable disk 16 moves upward to the limit position, the degree of communication between the air groove 162 and the plurality of air holes 124 is the greatest; when the movable disk 16 moves downward to the limit position, the degree of communication between the air groove 162 and the plurality of air holes 124 is the smallest; and during the movement of the movable disk 16 from bottom to top, the degree of communication between the air groove 162 and the plurality of air holes 124 will gradually increase.

[0094] When the movable disk 16 moves upward to the extreme position, the kneading force of the kneading convex strips 14 on the tea leaves is the greatest. During the kneading process, the denser the tea leaves are, the greater the wind force is used to blow the gas into the kneading space 121 through the blowing holes 124, which can facilitate the full contact between the tea leaves and the gas; when the movable disk 16 moves downward to the extreme position, the kneading force of the kneading convex strips 14 on the tea leaves is the smallest. During the kneading process, the looser the tea leaves are, the smaller the wind force is used to blow the gas into the kneading space 121 through the blowing holes 124, which can facilitate the full contact between the tea leaves and the gas.

[0095] Reference Figure 4 and Figure 6 One end of the air hose 312 away from the fan 311 is connected to the air groove 162. After the fan 311 blows the outside air into the air hose 312, it can be blown into the kneading space 121 through the air groove 162 and the plurality of air holes 124 in turn.

[0096] The plurality of air holes 124 correspond to the spaces formed between the plurality of adjacent kneading convex strips 14 one by one, and the ends of the air holes 124 communicating with the kneading spaces 121 face the spaces formed between the corresponding adjacent kneading convex strips 14. At this time, the air blown into the kneading spaces 121 through the air holes 124 can not only promote the contact of the tea leaves with the air during the kneading process, so that the tea leaves can be fully fermented and oxidized; at the same time, the probability of the tea leaves adhering to and staying in the spaces formed between the adjacent kneading convex strips 14 can be reduced by the wind force, so that the tea leaves can be closer to the kneading area, thereby effectively improving the kneading effect of the tea leaves and improving the uniformity of the kneading of the tea leaves.

[0097] Furthermore, in order to facilitate the gas to enter the kneading space 121 and blow onto the tea leaves, the kneading plate device 1 preferably also includes a covering member 19, and the covering member 19 can reduce the probability of the gas entering the kneading space 121 and diffusing upward to a certain extent.

[0098] The cover 19 is a tapered annular plate-like structure. The outer side of the cover 19 is fixedly connected to the inner wall of the side of the kneading space 121. The axis of the cover 19 coincides with the axis of the kneading disk 12, and the cover 19 is constricted toward the discharge port 122. The cover 19 is located above the plurality of air holes 124 in the kneading space 121, and can form a cover above the space on the side of the plurality of kneading convex strips 14 away from the discharge port 122, so as to effectively guide the gas entering the kneading space 121 through the air holes 124 to move toward the discharge port 122.

[0099] Reference Figure 1 and Figure 4 The temperature and humidity adjustment component 32 includes a thermostat 321 and a humidifier 322. The thermostat 321 can adjust the temperature of the gas, and the humidifier 322 can adjust the humidity of the gas. The thermostat 321 and the humidifier 322 are both fixedly mounted on the fan 311, and can respectively adjust the temperature and humidity of the air blown into the air hose 312 by the fan 311. In this embodiment, since the thermostat 321 and the humidifier 322 with the above functions are both common prior arts, they are not described in detail here, and are only briefly shown in the accompanying drawings.

[0100] During the tea rolling process, the air blowing component 31 and the temperature and humidity regulating component 32 operate together to provide an environment with good air circulation and suitable temperature and humidity conditions for the tea rolling, thereby effectively improving the quality of the tea rolling.

[0101] The implementation principle of a black tea making device in the embodiment of the present application is:

[0102] Before rolling the tea leaves, the first driving member 18 and the temperature and humidity regulating component 32 are adjusted respectively according to the force required for rolling the tea leaves and the required temperature and humidity conditions; then the tea leaves to be rolled are placed in the storage space 211, and the pressure applied to the tea leaves by the pressurizing component 24 is adjusted according to the needs of rolling the tea leaves; finally, the second driving member 23 and the auxiliary device 3 are started at the same time to start rolling the tea leaves;

[0103] During the tea rolling process, the tea leaves at the bottom of the storage space 211 will be rolled by the plurality of rolling ridges 14 in the rolling space 121 as the rolling barrel 21 moves in a circle; at the same time, air with a certain temperature and humidity enters the rolling space 121 through the plurality of air holes 124, so that the tea leaves are rolled under the condition of being in full contact with the air with a certain temperature and humidity, thereby effectively improving the quality of the rolled tea leaves.

[0104] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A black tea production process, characterized in that: The following steps are involved: S1: Withering: withering the freshly picked tea leaves, and controlling the withering degree to 30%-40%; S2: rolling, placing the withered tea leaves into a rolling machine for rolling; S3: fermentation, fermenting the rolled tea leaves at 15-28°C for 5-7 hours, and controlling the fermentation degree at 60%-80%; S4: Stir-fry until dry. Put the fermented tea leaves into the wok and continue to stir-fry for 1-2 hours. The moisture content of the fried tea leaves is controlled within 6%.

2. A black tea production process according to claim 1, characterized in that: In the frying step S4, the frying process is carried out in a high temperature and low temperature alternating manner, specifically in the order of high temperature, low temperature, high temperature again, and low temperature again; wherein the high temperature stage does not exceed 200°C, and the low temperature stage is not lower than 50°C.

3. A black tea making device, used in the black tea making process of claim 1, capable of rolling tea leaves, comprising a rolling plate device (1) and a rolling barrel device (2); The kneading plate device (1) comprises a frame (11), a kneading plate (12) and a cover (13); the kneading plate (12) is arranged on the top of the frame (11), the kneading plate (12) is provided with a kneading space (121) opening upward, and the bottom of the kneading plate (12) is provided with a discharge port (122) communicating with the kneading space (121); the cover (13) is movably connected to the kneading plate (12), and the movement of the cover (13) can control the opening and closing of the discharge port (122); The kneading disk device (1) further comprises a movable disk (16), a first driving member (18) and a plurality of kneading ridges (14); the movable disk (16) is located below the kneading disk (12) and is movably connected to the kneading disk (12) in a vertical direction, and the first driving member (18) can drive the movable disk (16) to move relative to the kneading disk (12); the kneading ridges (14) are arranged above the movable disk (16), and the kneading disk (12) is provided with a plurality of paving grooves (123) which are adapted to and correspond to the kneading ridges (14) one by one. During the movement of the movable disk (16) relative to the kneading disk (12), the kneading ridges (14) are kept in cooperation with the corresponding paving grooves (123), and their ends are kept in the kneading space (121); The kneading barrel device (2) comprises a kneading barrel (21), a second driving member (23), a transmission assembly (22) and a pressure assembly (24); the transmission assembly (22) is arranged on the top of the frame (11), the kneading barrel (21) is connected to the transmission assembly (22) and the bottom is located in the kneading space (121); the interior of the kneading barrel (21) has a storage space (211) for storing tea leaves, and the storage space (211) is communicated with the kneading space (121); the second driving member (23) can drive the transmission assembly (22) to move, and the transmission assembly (22) drives the kneading barrel (21) to rotate relative to the kneading disk (12) with the axis of the kneading disk (12) as the rotation axis; the pressure assembly (24) is arranged on the top of the kneading barrel (21) and can apply downward pressure to the tea leaves in the storage space (211).

4. The black tea making equipment according to claim 3, characterized in that: The kneading plate device (1) further comprises a connecting plate (15) and a plurality of elastic members (17); The connecting disk (15) is arranged between the kneading disk (12) and the movable disk (16), and the plurality of kneading ridges (14) are arranged on the connecting disk (15); the two ends of the elastic member (17) are respectively connected to the movable disk (16) and the connecting disk (15), and have a tendency to drive the connecting disk (15) to move upward to an extreme position and maintain it; when the connecting disk (15) moves upward to an extreme position, the end of the kneading ridge (14) away from the connecting disk (15) is located in the kneading space (121).

5. The black tea making equipment according to claim 4, characterized in that: The invention also comprises an auxiliary device (3), wherein the auxiliary device (3) comprises an air blowing component (31), and the air blowing component (31) comprises a fan (311) and an air blowing hose (312); The movable disk (16) is provided with an air groove (162), and the kneading disk (12) is provided with a plurality of blowing holes (124) which are in communication with the kneading space (121), and the plurality of blowing holes (124) are all in communication with the air groove (162); the two ends of the air blowing hose (312) are respectively connected to the fan (311) and the movable disk (16), and the end of the air blowing hose (312) away from the fan (311) is in communication with the air groove (162).

6. The black tea making equipment according to claim 5, characterized in that: The auxiliary device (3) also includes a temperature and humidity adjustment component (32), and the temperature and humidity adjustment component (32) includes a thermostat (321) and a humidifier (322). The thermostat (321) and the humidifier (322) are both arranged on the fan (311) and are capable of adjusting the temperature and humidity of the gas blown out by the fan (311).

7. The black tea making equipment according to claim 6, characterized in that: The degree of communication between the air groove (162) and the air blowing hole (124) gradually changes as the movable disk (16) moves downward to an extreme position, the degree of communication between the air groove (162) and the air blowing hole (124) is minimal; and when the movable disk (16) moves upward to an extreme position, the degree of communication between the air groove (162) and the air blowing hole (124) is maximal.

8. The black tea making equipment according to claim 5, characterized in that: The plurality of air blowing holes (124) correspond one to one with the spaces between the plurality of adjacent kneading convex strips (14), and one end of the air blowing hole (124) away from the air groove (162) faces the space between the corresponding adjacent kneading convex strips (14).

9. The black tea making equipment according to claim 8, characterized in that: The inner wall at the bottom of the kneading space (121) is tapered toward the discharge port (122).

10. The black tea making equipment according to claim 8, characterized in that: The kneading plate device (1) further comprises a covering member (19), wherein the covering member (19) is located above the blowing hole (124) and forms a covering above the space on the side of the kneading convex strip (14) adjacent to the blowing hole (124).

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