Uniform fermentation device for black tea processing

Abstract

The invention relates to the technical field of black tea processing, and discloses a uniform fermentation device for black tea processing, the uniform fermentation device comprises a fermentation tank and a tea tray, the fermentation tank is internally provided with a scattering mechanism; the scattering mechanism comprises a linear motor, a vertical shaft, a spiral groove and two groups of scattering rods, the linear motor is used for driving a tea tray to move up and down, so that tea in the tea tray is shaken up and down to the air to be in full contact with the air, the vertical shaft is driven to rotate through the spiral groove in the up-down moving process of the tea tray, and the linear motor is fixedly connected to the bottom of the fermentation tank; the top output end of the linear motor penetrates into the fermentation tank, a transverse shaft and a rolling roller are driven to rotate through a telescopic rod, and tea leaves contained at the bottom in a tea tray are pushed, so that the tea leaves are in full contact with oxygen in air, the activity of oxidase in the tea leaves is improved, aroma emission of the tea leaves is more facilitated, and the tea leaves are more healthy. Finally, the quality of tea finished products is improved.

Description

Technical Field

[0001] The invention relates to the technical field of black tea processing, in particular to a uniform fermentation device for black tea processing. Background Art

[0002] The black tea production process refers to the process of drying, scalding, rolling, and fermenting fresh tea leaves to make them into edible black tea. The tea enzymes in the tea leaves will react during the fermentation process, and the content of various substances will also change, thus forming the color, smell and taste of the tea leaves. The fermentation process of black tea, also known as "oxidation" or "enzymatic oxidation", is a key step in the production of black tea, which determines the color, aroma and taste of black tea.

[0003] According to a Chinese patent with the publication number "CN216363512U", a black tea processing and fermentation device with a turning structure is disclosed, which includes a fermentation box, a turning heating mechanism is arranged on the top and inside of the fermentation box, a heating wire is arranged inside the turning heating mechanism, a disassembly mechanism is arranged inside and on the right side of the fermentation box, a rotating tube is rotatably connected to the bottom of the turning heating mechanism, air ducts are fixedly connected to both sides of the rotating tube, and a turning block is fixedly connected to the end of the air duct away from the rotating tube. The black tea processing and fermentation device with a turning structure can heat the tea leaves to be fermented while turning them, so that the tea leaves are heated more evenly, and the labor of the staff is reduced, the cost of fermentation is reduced, and the tea leaves are fermented more perfectly.

[0004] The above patent scatters the tea leaves by means of a scattering rod during use. However, since the scattering rod is suspended in the air, the tea leaves at the bottom of the tea tray cannot be turned over, which leads to a decrease in the activity of the tea oxidase. Therefore, a uniform fermentation device for black tea processing is proposed to solve the above problem. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a uniform fermentation device for black tea processing in view of the deficiencies in the above-mentioned prior art.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a uniform fermentation device for black tea processing, comprising a fermentation tank, the outer wall of the fermentation tank is provided with a tank cover, the front of the tank cover is fixedly connected with a handle, the bottom of the fermentation tank is fixedly connected with three supporting legs, the interior of the fermentation tank is provided with a scattering mechanism, and the interior of the fermentation tank is provided with a scattering mechanism; the scattering mechanism comprises a linear motor, which is used to drive the tea tray to move up and down, so as to shake the tea leaves on the tea tray up and down, and the vertical axis is driven to rotate and two sets of scattering rods are driven by the spiral groove during the up and down movement of the tea tray, and the tea leaves shaking up and down are scattered by the scattering rods; the linear motor is fixedly connected to the bottom of the fermentation tank, the top output end of the linear motor penetrates into the interior of the fermentation tank, and is fixedly connected to the bottom of the tea tray, the bottom end of the vertical axis is rotatably connected to the bottom inner wall of the fermentation tank, the spiral groove is opened on the outer wall of the vertical axis, and is spirally connected to the tea tray through the spiral groove, the scattering rod is fixedly connected to the outer wall of the vertical axis, and is located above the spiral groove, and the outer wall of the tea tray is slidably connected to the inner wall of the fermentation tank.

[0007] Preferably, the breaking rod is a circular columnar structure, the other end of the breaking rod away from the vertical axis is slidably connected to the inside of the fermentation tank, the number of the breaking rods in each group is three, and the three breaking rods are arranged in a circular array.

[0008] Preferably, the bottom of the breaking rod is fixedly connected to a telescopic rod for providing support force to the horizontal axis so that the kneading roller is always in contact with the surface of the tea tray during the up and down movement of the tea tray; the bottom end of the telescopic rod is rotatably connected to the horizontal axis via a bearing, and a plurality of kneading rollers are fixedly connected to the horizontal axis for combing the tea leaves through the gaps between the plurality of kneading rollers; the kneading rollers are in contact with the bottom inner wall of the tea tray, and when the gear is not engaged with the tooth block, the kneading rollers will swing the tea leaves at the bottom of the tea tray as the breaking rod and the telescopic rod rotate.

[0009] Preferably, a kneading mechanism is provided inside the tea tray, and the kneading mechanism includes an annular groove, which is opened on the inner wall of the tea tray, and a tooth block is fixedly connected to the top inner wall of the annular groove, and a gear is fixedly connected to one end of the horizontal axis close to the annular groove, and the gear is meshed with the tooth block. Through the meshing of the gear and the tooth block, the horizontal axis is driven to rotate during the horizontal rotation of the telescopic rod, and the tea leaves on the tea tray are kneaded.

[0010] Preferably, three convex top blocks are fixedly connected to the bottom inner wall of the tea tray, and the top of the convex top block contacts the bottom of the bearing. When the bearing contacts the convex top block, the horizontal axis and the gear will be lifted up, and the gear will engage with the gear block. The three convex top blocks are arranged in a ring array, and a switch button is installed on the top of the convex top block. A heating wire is provided inside the tea tray, and the switch button is electrically connected to the heating wire. When the bearing contacts the convex top block, the switch button will be pressed, and the heating wire will be turned on to heat the tea leaves being rolled, thereby improving the reaction effect of the tea leaves and the enzyme preparation by increasing the temperature.

[0011] Preferably, a quantitative discharging mechanism is provided inside the fermentation tank, and the quantitative discharging mechanism includes a ring for sealing the bottom of the discharge pipe, thereby stopping the discharge of the enzyme preparation. The ring is fixedly connected to the top of the vertical axis through a bracket, and the bracket drives the ring to rotate during the rotation of the vertical axis. A material box is fixedly connected to the top of the fermentation tank, and the enzyme preparation is arranged inside the material box.

[0012] Preferably, the bottom end of the material box is fixedly connected to a discharge pipe, the bottom end of the discharge pipe penetrates into the interior of the fermentation tank and is slidably connected to the top of the ring, and a discharge port is penetrated through the top of the ring. When the discharge port rotates to the bottom of the discharge pipe, the enzyme preparation in the material box will be discharged.

[0013] Preferably, an airbag is fixedly connected to the right inner wall of the fermentation tank, the left side of the airbag is arc-shaped, and a return spring is arranged inside the airbag, so that the airbag can automatically return to its original position after being compressed.

[0014] Preferably, the right side of the airbag is fixedly connected with an air inlet pipe, the left side of the airbag is fixedly connected with an exhaust pipe, and one-way valves are provided inside the air inlet pipe and the exhaust pipe, which restrict the gas in the air inlet pipe and the exhaust pipe to flow only to the left, and the outer wall of the ring is fixedly connected with an arc-shaped top block, which contacts the outer wall of the airbag, and the air inlet pipe is arranged below the arc-shaped top block. During the rotation of the arc-shaped top block, the arc-shaped top block will contact the arc surface of the airbag and squeeze it and the return spring, and then the gas in the airbag is ejected through the exhaust pipe due to the squeezing, and the gas ejected through the exhaust pipe blows away the falling enzyme preparation, and then the airbag is expanded by the rebound of the return spring, at which time negative pressure is formed in the airbag, and the gas outside the fermentation tank is sucked into the airbag through the air inlet pipe during the expansion process.

[0015] The present invention adopts the above technical solution, which can bring the following beneficial effects: 1. A uniform fermentation device for black tea processing, which shakes the tea leaves in the fermentation tank vertically by shaking the tea tray, and scatters the tea leaves shaken up and down by rotating two sets of scattering rods, thereby improving the scattering effect, promoting contact with oxygen, and improving the fermentation effect. The telescopic rod drives the horizontal axis and the kneading roller to rotate, pushes the tea leaves at the bottom of the tea tray, and scatters the tea leaves at the bottom, so that the tea leaves are fully in contact with oxygen in the air, thereby enhancing the oxidase activity in the tea leaves, which is more conducive to the tea leaves to emit aroma and improves its fermentation effect.

[0016] 2. This uniform fermentation device for black tea processing is equipped with a kneading mechanism. During the rotation of the horizontal axis, it will be intermittently lifted up by the convex top block. At this time, the gear will mesh with the tooth block to produce rotation, and drive the horizontal axis and the kneading roller to rotate to roll and knead the tea leaves on the tea tray. After the bearing is separated from the convex top block, the kneading roller will stop rotating and move downward to contact the tea tray, thereby continuing to push the tea leaves at the bottom of the tea tray. This process is repeated, and the tea leaves will be repeatedly turned over and kneaded to further improve the fermentation effect.

[0017] 3. This uniform fermentation device for black tea processing is equipped with a kneading mechanism. When the bearing is not in contact with the convex top block, the kneading roller is in contact with the tea tray and will push part of the tea leaves to move to one side of the circle. Then, after the bearing is in contact with the convex top block, the kneading roller is out of contact with the tea tray. At this time, the kneading roller rotates and rolls and crushes the tea leaves moving to one side, thereby achieving a kneading effect, and rolling and combing the tea leaves moving to one side, and cooperating with the constantly shaking tea tray to achieve uniform distribution and promote oxidation and fermentation.

[0018] 4. This uniform fermentation device for black tea processing uses a quantitative discharging mechanism. When the bearing is in intermittent contact with the convex top block, it will trigger the switch button and intermittently turn on the electric heating wire to evenly heat the tea leaves. By increasing the temperature, the reaction effect between the tea leaves and the enzyme preparation is improved, and the fermentation time is shortened.

[0019] 5. The uniform fermentation device for black tea processing uses a quantitative discharging mechanism. After the discharging pipe contacts the discharging port, the enzyme preparation in the material box falls into the material tray, and is intermittently discharged and falls onto the tea tray. The gas ejected from the exhaust pipe by the squeezed air bag disperses the falling enzyme preparation, thereby improving the scattering uniformity of the enzyme preparation, making the enzyme preparation and tea more evenly mixed, accelerating the biochemical reaction in the tea fermentation process, and shortening the fermentation time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the fermentation tank in the present invention; Figure 3It is a schematic diagram of the structure of the breaking rod area in the present invention; Figure 4 It is a side cross-sectional view of the kneading roller area in the present invention; Figure 5 This is an enlarged view of region A in the present invention; Figure 6 This is a schematic diagram of the tea tray area structure in the present invention; Figure 7 This is a schematic diagram of the ring region structure of the present invention; Figure 8 This is an enlarged view of area B in the present invention.

[0021] In the figure: 1. fermentation tank; 2. tank cover; 3. breaking mechanism; 4. kneading mechanism; 5. quantitative discharging mechanism; 6. handle; 7. supporting leg; 301. linear motor; 302. vertical axis; 303. spiral groove; 304. breaking rod; 305. telescopic rod; 306. horizontal axis; 307. kneading roller; 308. tea tray; 401. annular groove; 402. tooth block; 403. gear; 404. convex top block; 405. switch button; 406. heating wire; 501. bracket; 502. ring; 503. material box; 504. discharging pipe; 505. discharging port; 506. arc top block; 507. air bag; 508. air inlet pipe; 509. exhaust pipe. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] See also Figure 1-8One embodiment of the present invention is: a uniform fermentation device for black tea processing, comprising a fermentation tank 1, a tank cover 2 is arranged on the outer wall of the fermentation tank 1, a handle 6 is fixedly connected to the front of the tank cover 2, three supporting legs 7 are fixedly connected to the bottom of the fermentation tank 1, a scattering mechanism 3 is arranged inside the fermentation tank 1, and a scattering mechanism 3 is arranged inside the fermentation tank 1; the scattering mechanism 3 comprises a linear motor 301, which is used to drive a tea tray 308 to move up and down, thereby driving the tea leaves on the tea tray 308 to shake up and down and fully contact with the air, a vertical shaft 302, and a spiral groove 303. During the up and down movement of the tea tray 308, the spiral groove 303 drives the vertical shaft 30 2 rotation, two sets of scattering rods 304, the scattering rods 304 are used to scatter the tea leaves shaking up and down; the linear motor 301 is fixedly connected to the bottom of the fermentation tank 1, the top output end of the linear motor 301 penetrates into the interior of the fermentation tank 1, and is fixedly connected to the bottom of the tea tray 308, the bottom end of the vertical shaft 302 is rotatably connected to the bottom inner wall of the fermentation tank 1, the spiral groove 303 is opened on the outer wall of the vertical shaft 302, and is spirally connected to the tea tray 308 through the spiral groove 303, the scattering rod 304 is fixedly connected to the outer wall of the vertical shaft 302, and is located above the spiral groove 303, and the outer wall of the tea tray 308 is slidably connected to the inner wall of the fermentation tank 1.

[0024] The scattering rod 304 is a circular columnar structure. The other end of the scattering rod 304 away from the vertical axis 302 is slidably connected to the inside of the fermentation tank 1. There are three scattering rods 304 in each group, and the three scattering rods 304 are arranged in a circular array. The bottom of the bottom scattering rod 304 is fixedly connected with a telescopic rod 305, which is used to provide support for the horizontal axis 306, so that the kneading roller 307 always fits the surface of the tea tray 308 during the up and down movement. The bottom end of the telescopic rod 305 is rotatably connected with the horizontal axis 306 through a bearing. A plurality of kneading rollers 307 are fixedly connected to the horizontal axis 306. The tea leaves are combed through the gaps between the plurality of kneading rollers 307. The kneading rollers 307 are in contact with the bottom inner wall of the tea tray 308. When the gear 403 is not engaged with the tooth block 402, the kneading rollers 307 will shake the tea leaves placed at the bottom of the tea tray 308 as the scattering rod 304 and the telescopic rod 305 rotate.

[0025] Working principle: first open the tank cover 2 and put the tea leaves into the tea tray 308 in the fermentation tank 1, then close the tank cover 2, and then turn on the linear motor 301 to drive the tea tray 308 to move up and down. During the up and down movement of the tea tray 308, the tea leaves are shaken up and down, and the vertical axis 302 is driven to rotate through the spiral groove 303. The rotation of the vertical axis 302 drives the two sets of breaking rods 304 to rotate, and the tea leaves shaken up and down are broken up. The breaking rod 304 rotates through the telescopic rod 305 to drive the horizontal axis 306 and the kneading roller 307 to rotate. During the rotation of the kneading roller 307, the tea leaves placed at the bottom of the tea tray 308 are pushed, so that the tea leaves are fully in contact with the oxygen in the air.

[0026] See also Figure 1-8 On the basis of the above embodiment, in another embodiment of the present invention, a kneading mechanism 4 is arranged inside the tea tray 308, and the kneading mechanism 4 includes an annular groove 401, and the annular groove 401 is opened on the inner wall of the tea tray 308. A tooth block 402 is fixedly connected to the top inner wall of the annular groove 401, and a gear 403 is fixedly connected to one end of the horizontal axis 306 close to the annular groove 401. The gear 403 is meshed with the tooth block 402. Through the meshing of the gear 403 and the tooth block 402, the horizontal axis 306 is driven to rotate during the horizontal rotation of the telescopic rod 305, and the tea leaves on the tea tray 308 are kneaded.

[0027] The bottom inner wall of the tea tray 308 is fixedly connected with three convex top blocks 404, and the top of the convex top block 404 contacts the bottom of the bearing. When the bearing contacts the convex top block 404, the horizontal axis 306 and the gear 403 are lifted up, and the telescopic rod 305 contracts, driving the kneading roller 307 to break away from the contact with the tea tray 308. At this time, the gear 403 will mesh with the tooth block 402, so that the kneading roller 307 can achieve a rolling state to knead the tea leaves. When the bearing is separated from the convex top block 404, the telescopic rod 305 is released to drive the kneading roller 307 to contact with the tea tray 308, so that the kneading roller 307 can knead the tea leaves on the tea tray 308. The tea leaves 308 are then scraped and broken up. Three convex top blocks 404 are arranged in a circular array. A switch button 405 is installed on the top of the convex top block 404. A heating wire 406 is arranged inside the tea tray 308. The switch button 405 is electrically connected to the heating wire 406. When the bearing contacts the convex top block, the switch button 405 is pressed, and the heating wire 406 is turned on to heat the tea leaves being rolled, thereby improving the reaction effect of the tea leaves and the enzyme preparation by increasing the temperature. When the bearing loses contact with the convex top block 404, the switch button 405 is stopped from being pressed, and the heating wire 406 stops heating, and this reciprocating process is repeated to achieve uniform heating of the tea leaves.

[0028] Working principle: During the rotation of the horizontal axis 306, the bearing contacts with the convex top block 404, the horizontal axis 306 and the gear 403 are lifted up, and the gear 403 moves upward and meshes with the tooth block 402, and generates self-rotation. The rotation of the gear 403 drives the horizontal axis 306 and the kneading roller 307 to rotate, and kneads the tea leaves on the tea tray 308. After the bearing leaves the convex top block 404, the tooth block 402 will also disengage from the gear 403. At this time, the kneading roller 307 will stop rotating and continue to push the tea leaves at the bottom of the tea tray 308. This process is repeated, and the tea leaves will be repeatedly turned over and kneaded.

[0029] See also Figure 1-8On the basis of the above embodiment, in another embodiment of the present invention, a quantitative discharging mechanism 5 is arranged inside the fermentation tank 1, and the quantitative discharging mechanism 5 includes a ring 502, which is used to block the bottom of the discharge pipe 504, thereby stopping the discharge of the enzyme preparation. The ring 502 is fixedly connected to the top of the vertical shaft 302 through a bracket 501. During the rotation of the vertical shaft 302, the ring 502 is driven to rotate by the bracket 501. A material box 503 is fixedly connected to the top of the fermentation tank 1, and the enzyme preparation is arranged inside the material box 503.

[0030] The bottom end of the material box 503 is fixedly connected to a discharge pipe 504, the bottom end of the discharge pipe 504 penetrates into the interior of the fermentation tank 1, and is slidably connected to the top of the ring 502. A discharge port 505 is opened through the top of the ring 502. When the discharge port 505 rotates to the bottom of the discharge pipe 504, the enzyme preparation in the material box 503 will be discharged.

[0031] An airbag 507 is fixedly connected to the right inner wall of the fermentation tank 1. The left side of the airbag 507 is arc-shaped. A return spring is arranged inside the airbag 507. The return spring allows the airbag 507 to automatically return to its original position after being compressed.

[0032] The right side of the airbag 507 is fixedly connected with an air intake pipe 508, and the left side of the airbag 507 is fixedly connected with an exhaust pipe 509. The air intake pipe 508 and the exhaust pipe 509 are provided with a one-way valve inside, and the gas in the air intake pipe 508 and the exhaust pipe 509 is restricted by the one-way valve to flow only to the left. The outer wall of the ring 502 is fixedly connected with an arc-shaped top block 506, and the arc-shaped top block 506 contacts the outer wall of the airbag 507. The air intake pipe 508 is arranged below the arc-shaped top block 506. During the rotation of the top block 506, it will contact the arc surface of the airbag 507 and squeeze it and the return spring. Then, the gas in the airbag 507 will be ejected through the exhaust pipe 509 due to the squeezing. The gas ejected from the exhaust pipe 509 will blow away the falling enzyme preparation, and then the return spring will rebound to drive the airbag 507 to expand. At this time, negative pressure is formed in the airbag 507, and the gas outside the fermentation tank 1 is sucked into the airbag 507 through the air inlet pipe 508 during the expansion process.

[0033] Working principle: during the rotation of the vertical axis 302, the ring 502 will be driven to rotate through the bracket 501. During the rotation of the ring 502, the discharge port 505 will intermittently overlap with the discharge pipe 504. When the discharge port 505 overlaps with the discharge pipe 504, the enzyme preparation in the material box 503 will fall onto the tea tray 308 through the discharge pipe 504 and the discharge port 505. During the rotation of the ring 502, the arc top block 506 will be driven to rotate. During the rotation of the arc top block 506, it will contact the arc surface of the airbag 507 and squeeze it and the return spring. Then, the gas in the airbag 507 is squeezed and ejected through the exhaust pipe 509. The gas ejected through the exhaust pipe 509 blows away the falling enzyme preparation, and then the return spring rebounds to drive the airbag 507 to expand. At this time, negative pressure is formed in the airbag 507, and during the expansion process, the gas outside the fermentation tank 1 is sucked into the airbag 507 through the air inlet pipe 508.

[0034] The present invention provides a uniform fermentation device for black tea processing. There are many methods and ways to implement the technical solution. The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention. All components not specified in this embodiment can be implemented by existing technologies.

Claims

1. A uniform fermentation device for black tea processing, comprising a fermentation tank (1), characterized in that: The outer wall of the fermentation tank (1) is provided with a tank cover (2), a handle (6) is fixedly connected to the front of the tank cover (2), three supporting legs (7) are fixedly connected to the bottom of the fermentation tank (1), and a breaking mechanism (3) is provided inside the fermentation tank (1); The scattering mechanism (3) comprises a linear motor (301), a vertical shaft (302), a spiral groove (303), two sets of scattering rods (304), and a tea tray (308); The linear motor (301) is fixedly connected to the bottom of the fermentation tank (1); the top output end of the linear motor (301) penetrates into the interior of the fermentation tank (1) and is fixedly connected to the bottom of the tea tray (308); the bottom end of the vertical shaft (302) is rotatably connected to the bottom inner wall of the fermentation tank (1); the spiral groove (303) is provided on the outer wall of the vertical shaft (302) and is spirally connected to the tea tray (308) via the spiral groove (303); the scattering rod (304) is fixedly connected to the outer wall of the vertical shaft (302) and is located above the spiral groove (303); and the outer wall of the tea tray (308) is slidably connected to the inner wall of the fermentation tank (1).

2. The uniform fermentation device for black tea processing according to claim 1, characterized in that: The breaking rod (304) is a circular columnar structure. The other end of the breaking rod (304) away from the vertical axis (302) is slidably connected to the inside of the fermentation tank (1). Each group of the breaking rods (304) has three breaking rods, and the three breaking rods (304) are arranged in a circular array.

3. The uniform fermentation device for black tea processing according to claim 2, characterized in that: The bottom of the scattering rod (304) is fixedly connected to a telescopic rod (305), the bottom end of the telescopic rod (305) is rotatably connected to a transverse axis (306) via a bearing, a plurality of kneading rollers (307) are fixedly connected to the transverse axis (306), and the kneading rollers (307) are in contact with the bottom inner wall of the tea tray (308).

4. The uniform fermentation device for black tea processing according to claim 3, characterized in that: A kneading mechanism (4) is arranged inside the tea tray (308), and the kneading mechanism (4) comprises an annular groove (401), the annular groove (401) is formed on the inner wall of the tea tray (308), a gear block (402) is fixedly connected to the top inner wall of the annular groove (401), and a gear (403) is fixedly connected to one end of the transverse axis (306) close to the annular groove (401), and the gear (403) is meshed with the gear block (402).

5. The uniform fermentation device for black tea processing according to claim 4, characterized in that: Three convex top blocks (404) are fixedly connected to the inner wall of the bottom of the tea tray (308); the top of the convex top blocks (404) contacts the bottom of the bearing; the three convex top blocks (404) are arranged in a ring array; a switch button (405) is installed on the top of the convex top block (404); a heating wire (406) is arranged inside the tea tray (308); and the switch button (405) is electrically connected to the heating wire (406).

6. The uniform fermentation device for black tea processing according to claim 5, characterized in that: A quantitative discharging mechanism (5) is arranged inside the fermentation tank (1), and the quantitative discharging mechanism (5) comprises a circular ring (502). The circular ring (502) is fixedly connected to the top of the vertical axis (302) via a bracket (501). A material box (503) is fixedly connected to the top of the fermentation tank (1), and an enzyme preparation is arranged inside the material box (503).

7. The uniform fermentation device for black tea processing according to claim 6, characterized in that: The bottom end of the material box (503) is fixedly connected to a discharge pipe (504), the bottom end of the discharge pipe (504) penetrates into the interior of the fermentation tank (1) and is slidably connected to the top of the circular ring (502), and a discharge port (505) is formed through the top of the circular ring (502).

8. The uniform fermentation device for black tea processing according to claim 7, characterized in that: An air bag (507) is fixedly connected to the right inner wall of the fermentation tank (1); the left side of the air bag (507) is arc-shaped; and a return spring is arranged inside the air bag (507).

9. A uniform fermentation device for black tea processing according to claim 8, characterized in that: The right side of the airbag (507) is fixedly connected to an air intake pipe (508), and the left side of the airbag (507) is fixedly connected to an exhaust pipe (509). One-way valves are arranged inside the air intake pipe (508) and the exhaust pipe (509). The outer wall of the circular ring (502) is fixedly connected to an arc-shaped top block (506), and the arc-shaped top block (506) is in contact with the outer wall of the airbag (507). The air intake pipe (508) is arranged below the arc-shaped top block (506).

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