Tea leaf fermentation device and method

Abstract

The invention relates to the technical field of tea leaf fermentation, in particular to a tea leaf fermentation device and method. The central supporting cylinder is coaxially arranged in the fermentation tank; the fan-shaped units are used for bearing to-be-fermented tea leaves; a plurality of groups of fan-shaped units are uniformly distributed in the circumferential direction of the central supporting cylinder and are encircled to form a tray assembly; the driving assembly comprises a driving main shaft arranged in the center supporting cylinder in a penetrating mode, a driving bevel gear fixedly arranged on the driving main shaft, and a driven shaft with one end connected with the fan-shaped units and the other end extending into the center supporting cylinder. By arranging the fan-shaped units which are uniformly distributed in the circumferential direction of the central supporting cylinder, the fan-shaped units are matched with the driving assembly to realize self-axis autorotation of the fan-shaped units, so that tea leaves are turned over in the autorotation process, efficient replacement of the tea leaves on the surface layer and the inner layer as well as the upper layer and the lower layer is realized, the fermentation difference is fundamentally eliminated, and the uniformity of the tea leaf quality is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tea fermentation, in particular to a tea fermentation device and a working method of the tea fermentation device. BACKGROUND

[0002] The present application relates to the manufacture of tea, in particular to the oxidation and fermentation of tea; the purpose of tea fermentation is to promote the enzymatic oxidation of the contents in tea under suitable temperature, humidity and oxygen conditions, to form unique color, aroma and taste.

[0003] In the existing fermentation device, tea is generally oxidized and fermented by being laid flat on a tray, but there are differences in the fermentation degree of the upper and lower layers and the inner and outer layers when the tea is laid flat, which affects the quality uniformity. SUMMARY

[0004] The present application provides a tea fermentation device and a method thereof to solve the problems in the prior art, and the specific technical solutions are as follows:

[0005] In one aspect, the present application provides a tea fermentation device, comprising:

[0006] a fermentation tank;

[0007] a central support cylinder coaxially arranged in the fermentation tank;

[0008] a fan-shaped unit for carrying tea to be fermented, the fan-shaped unit being uniformly arranged with multiple groups of combined enclosures around the central support cylinder to form a tray assembly;

[0009] and a driving assembly, the driving assembly comprising a driving main shaft arranged in the central support cylinder, a driving bevel gear fixed on the driving main shaft, a driven shaft connected to the fan-shaped unit at one end and extending into the central support cylinder, and a driven bevel gear fixed on the extension end of the driven shaft and engaged with the driving bevel gear;

[0010] When the driving main shaft rotates, the driven shaft drives the fan-shaped unit to rotate around its own axis, so that the tea in the fan-shaped unit turns over during rotation to realize the replacement of the upper and lower layers of tea.

[0011] As a further technical solution of the present application, the fan-shaped unit comprises a support frame and two groups of openable and closable sealing members covering both ends of the support frame, and the fan-shaped unit has at least a horizontal state and a vertical state during rotation;

[0012] In the horizontal state, the downward group of sealing members is closed to support the tea laid in the fan-shaped unit, and the upward group of sealing members is opened and closed to allow the tea laid in the fan-shaped unit to be in contact with the environment for continuous fermentation;

[0013] In the vertical state, the two groups of blocking members are closed to limit the sliding of tea leaves to make them evenly distributed in the fan unit.

[0014] As a further technical solution of the present application, the two groups of blocking members are respectively blocking assembly one covering one end face of the support frame and blocking assembly two covering the other end face of the support frame.

[0015] The blocking assembly one comprises blocking plate one and blocking plate two rotatably arranged on both sides of the support frame, and the blocking plate one and the blocking plate two can be rotated and closed towards the inner side.

[0016] The blocking assembly two comprises blocking plate three and blocking plate four rotatably arranged on both sides of the support frame, and the blocking plate three and the blocking plate four can be rotated and closed towards the inner side.

[0017] As a further technical solution of the present application, the end face of the blocking plate one, the blocking plate two, the blocking plate three and the blocking plate four towards the inner side is provided with a pressing strip, the pressing strips on the blocking plate one and the blocking plate two are staggered with each other, the blocking plate one and the blocking plate four are opposite to each other and the pressing strips are staggered with each other, and the fan unit forms a wave-shaped space inside in the vertical state to limit the sliding of tea leaves.

[0018] As a further technical solution of the present application, the opening and closing of the blocking members are realized by the linkage assembly when the fan unit rotates, the linkage assembly comprises an inner annular track and an outer annular track coaxially arranged with the rotating center of the fan unit, the inner annular track and the outer annular track are both mounted outside the center support cylinder, the inner annular track and the outer annular track are arranged at intervals in the radial direction to form an annular space, four groups of extension shafts are arranged in the annular space, the four groups of extension shafts are respectively coaxially fixed with the rotating centers of the blocking plate one, the blocking plate two, the blocking plate three and the blocking plate four, and the four groups of extension shafts are respectively connected with gear one, gear two, gear three and gear four corresponding to the blocking plate one, the blocking plate two, the blocking plate three and the blocking plate four.

[0019] As a further technical solution of the present application, the outer wall of the inner annular track is paved with a set of rotating closing teeth one and a set of rotating closing teeth two, the inner wall of the outer annular track is paved with a set of rotating opening teeth one and a set of rotating opening teeth two, the set of rotating opening teeth one, the set of rotating closing teeth one and the set of rotating closing teeth two, the set of rotating opening teeth two have an axial interval, the set of rotating opening teeth one and the set of rotating closing teeth one correspond to the gear one and the gear three, and the set of rotating closing teeth two and the set of rotating opening teeth two correspond to the gear two and the gear four.

[0020] As a further technical solution of the present application, a spacer is arranged between two adjacent fan units, the spacer is connected outside the center support cylinder, the end face of the spacer towards the fan unit is arranged as an arc structure with the rotating center of the fan unit as the center, and the radius of the arc structure is adapted to the rotating radius of the fan unit.

[0021] As a further technical scheme of the present application, the tray assembly is provided in multiple groups and is distributed equidistantly along the central support cylinder in an axial direction.

[0022] As a further technical scheme of the present application, the fermentation tank is provided with a feed opening on the side surface, and a door is rotatably arranged on the feed opening.

[0023] On the other hand, the present application also provides a working method of the tea fermentation device, comprising the following steps:

[0024] S1: loading stage;

[0025] The tea to be fermented is evenly laid in the plurality of fan-shaped units which are evenly distributed around the central support cylinder in a circumferential direction, the door of the fermentation tank is closed, and the fermentation is started;

[0026] S2: tea turning;

[0027] The driving assembly is started to rotate the driving spindle and drive each fan-shaped unit to rotate around its own axis through the meshing transmission of the driving bevel gear and the driven bevel gear, and in the rotation process of the fan-shaped unit, the two end sealing members are controlled to be adaptively opened and closed through the linkage assembly: in the horizontal state, the downward sealing member is closed to support the tea, and the upward sealing member is opened to make the tea contact with the fermentation environment; in the vertical state, both groups of sealing members are closed to limit the sliding of the tea to make it evenly distributed, the tea is turned over in the rotation and the upper and lower layers are replaced, the fermentation state is maintained until the fermentation of the tea is completed;

[0028] S3: unloading stage;

[0029] The driving assembly is stopped, and the door is opened to take out the fermented tea.

[0030] The present application has the following beneficial effects:

[0031] (1) By arranging the fan-shaped units which are evenly distributed around the central support cylinder in a circumferential direction, and cooperating with the driving assembly to realize the rotation of the fan-shaped units around their own axes, the tea is turned over in the rotation process, the efficient replacement of the surface layer and the inner layer, the upper layer and the lower layer of the tea is realized, and the fermentation difference is fundamentally eliminated, and the uniformity of the tea quality is improved.

[0032] (2) The sealing members of the fan-shaped units are designed to adapt to their rotation state: in the horizontal state, the downward sealing member is closed to support the tea, and the upward sealing member is opened to ensure that the tea fully contacts with the fermentation environment, and in the vertical state, both groups of sealing members are fully closed to limit the sliding of the tea, which solves the problem of uneven distribution of the tea in the turning process, and takes into account the stability of the support and the contact demand of the fermentation.

[0033] (3) The linkage assembly is driven by the meshing of the gear and the annular track, and the automatic opening and closing of the blocking piece is realized by the power of the self-rotation of the fan-shaped unit, without the need for additional driving devices, which simplifies the structural complexity and improves the operation reliability.

[0034] (4) Multiple groups of tray assemblies are distributed equidistantly along the central support cylinder, and the small size design of the fan-shaped unit maximizes the use of the internal space of the fermentation tank without affecting the overturning action, solves the problem of insufficient fermentation volume in the limited tank body, and improves the single fermentation efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 The overall structure schematic diagram of the tea fermentation device is shown;

[0036] Figure 2 The structure schematic diagram of the tray assembly is shown;

[0037] Figure 3 The structure schematic diagram of the fan-shaped unit is shown;

[0038] Figure 4 The structure schematic diagram of the driving assembly is shown;

[0039] Figure 5 The structure schematic diagram of the fan-shaped unit in the vertical state is shown;

[0040] Figure 6 The structure schematic diagram of the linkage assembly is shown;

[0041] Figure 7 The structure schematic diagram of the spacer is shown.

[0042] BRIEF DESCRIPTION OF DRAWINGS: 100, fermentation tank; 110, charging port; 120, opening and closing door; 200, central support cylinder; 300, fan-shaped unit; 310, support frame; 320, blocking assembly one; 321, blocking plate one; 322, blocking plate two; 330, blocking assembly two; 331, blocking plate three; 332, blocking plate four; 340, pressing strip; 400, driving assembly; 410, driving main shaft; 420, driving bevel gear; 430, driven shaft; 440, driven bevel gear; 500, linkage assembly; 510, inner annular track; 511, closing tooth group one; 512, closing tooth group two; 520, outer annular track; 521, opening tooth group one; 522, opening tooth group two; 530, annular space; 540, extension shaft; 541, gear one; 542, gear two; 543, gear three; 544, gear four; 600, spacer. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the present application will be described clearly and completely below in combination with embodiments.

[0044] Embodiment 1

[0045] Figure 1 The overall structure of the tea fermentation device is shown in the schematic view; Figure 1 In the tea fermentation device, a fermentation tank 100 is provided, which is in a columnar structure and vertically placed. A material opening 110 is formed on the side of the fermentation tank 100, and an opening and closing door 120 is rotatably arranged on the material opening 110. In actual use, the opening and closing door 120 can be rotated to control the opening and closing of the material opening 110, so as to facilitate the feeding and discharging of the device and facilitate the sealing of the internal atmosphere during work.

[0046] It should be noted that the control of temperature, humidity and oxygen in the fermentation tank 100 is a prior art, and the present application does not make further improvements.

[0047] Figure 2 The structure of the tray assembly is shown in the schematic view; Figure 2 In the fermentation tank 100, a central support cylinder 200 is coaxially arranged, and a plurality of tray assemblies are equidistantly arranged on the central support cylinder 200 along the axial direction. That is, the plurality of tray assemblies are arranged in layers with the central support cylinder 200 as the reference in the fermentation tank 100, and the axial spacing between each adjacent two tray assemblies is the same, so as to improve the utilization rate of the overall space in the fermentation tank 100 and increase the total amount of tea for one fermentation. The tray assembly comprises a plurality of fan-shaped units 300 arranged uniformly around the circumference. That is, the tray assembly is divided into a plurality of fan-shaped units 300, and each fan-shaped unit 300 is uniformly laid with tea to be fermented, and the volume of the fan-shaped unit 300 is reduced while its rotation radius is reduced, which is beneficial to subsequent overturning.

[0048] It should be noted that each tray assembly in the present embodiment is divided into eight fan-shaped units 300, but in some other embodiments, in order to further reduce the spacing between adjacent two layers of tray assemblies and increase the total amount of tea for one fermentation, the tray assembly can be further divided into more fan-shaped units 300 to further reduce the space required for self-rotation, such as twelve, sixteen, etc.

[0049] Figure 3 The structure of the fan-shaped unit 300 is shown in the schematic view; Figure 4 The structure of the driving assembly 400 is shown in the schematic view; Figure 3 and Figure 4In the specific embodiment, the driving assembly 400 comprises a driving spindle 410, a driving bevel gear 420, a driven shaft 430, a driven bevel gear 440 and a driving member 450. The driving spindle 410 is rotatably arranged in the central support cylinder 200. The driving bevel gear 420 is coaxially connected outside the driving spindle 410. The driving bevel gear 420 is provided with multiple groups and corresponds to the tray assembly. One end of the driven shaft 430 is connected to the fan-shaped unit 300. The other end of the driven shaft 430 extends into the central support cylinder 200. The driven bevel gear 440 is connected to the extended end of the driven shaft 430 and is engaged with the driving bevel gear 420. The driving member 450 is installed at the top of the fermentation tank 100 and is in driving connection with the driving spindle 410.

[0050] When the driving member 450 is started, the driving spindle 410 and the driving bevel gear 420 are driven to rotate. The driving bevel gear 420 and the driven bevel gear 440 are engaged, thereby driving the driven bevel gear 440, the driven shaft 430 and the fan-shaped unit 300 to rotate. The driven shaft 430 is connected to the central position of the fan-shaped unit 300, so that the fan-shaped unit 300 rotates around the driven shaft 430 to realize self-rotation of the fan-shaped unit 300 in a limited space to achieve overturning. The tea leaves inside the fan-shaped unit 300 are turned over macroscopically, so that the surface tea leaves become the inner tea leaves and the inner tea leaves become the surface tea leaves, which is beneficial to the uniformity of tea fermentation.

[0051] It should be noted that the correspondence between the driving bevel gear 420 and the tray assembly means that the number of the driving bevel gears 420 corresponds to the number of the tray assemblies and the axial positions of the driving bevel gears 420 correspond to the axial positions of the tray assemblies one by one, i.e., each layer of the tray assembly corresponds to one driving bevel gear 420 to realize driving.

[0052] Figure 5 The structure schematic diagram of the fan-shaped unit 300 in the vertical state is shown; Figure 5 In combination Figure 3 The fan-shaped unit 300 comprises a support frame 310 and two groups of openable and closable blocking members which are closed at both ends of the support frame 310. The fan-shaped unit 300 has at least a horizontal state and a vertical state during rotation.

[0053] In the horizontal state, the downward group of blocking members is closed to support the tea leaves laid in the fan-shaped unit 300. The upward group of blocking members is opened and closed to make the tea leaves laid in the fan-shaped unit 300 contact with the environment for continuous fermentation.

[0054] In the vertical state, both groups of blocking members are closed to limit the sliding of the tea leaves to make them uniformly distributed in the fan-shaped unit 300, thereby avoiding the tea leaves in the fan-shaped unit 300 from sliding and accumulating at the bottom due to gravity.

[0055] Continuing to refer to Figure 3, two groups of sealing members are respectively a sealing assembly one 320 covering one end surface of the support frame 310 and a sealing assembly two 330 covering the other end surface of the support frame 310, the sealing assembly one 320 comprises sealing plates one 321 and two 322 rotatably arranged on both sides of the support frame 310, and the sealing plates one 321 and two 322 can be rotated to close towards the inner side, the sealing assembly two 330 comprises sealing plates three 331 and four 332 rotatably arranged on both sides of the support frame 310, and the sealing plates three 331 and four 332 can be rotated to close towards the inner side.

[0056] The end surfaces of the sealing plates one 321, two 322, three 331 and four 332 towards the inner side are provided with pressing strips 340, the pressing strips 340 on the sealing plates one 321 and two 322 are staggered with each other, the sealing plates one 321 and four 332 are opposite to each other and the pressing strips 340 are staggered with each other, and the fan unit 300 forms a wave-shaped space inside in the vertical state; that is, by means of the staggered arrangement of the pressing strips 340, a wave-shaped accommodation space can be formed when both groups of sealing members are closed in the vertical state, so as to increase the difficulty of sliding of the tea leaves in the accommodation space.

[0057] It should be further defined that when the inclination angle of the fan unit 300 is 45°, both groups of sealing members are completely closed, that is, when the fan unit 300 is converted from the horizontal state to the vertical state, both groups of sealing members can complete the closing operation in the first 45° of the movement of the fan unit 300, so as to ensure that the tea leaves inside do not slide.

[0058] Figure 6 The structure of the linkage assembly 500 is shown in the structural schematic view; Figure 6In the specific embodiment, the linkage assembly 500 comprises an inner annular track 510 and an outer annular track 520 coaxially arranged with the rotation center of the fan-shaped unit 300, the inner annular track 510 and the outer annular track 520 are both mounted outside the central support cylinder 200, the inner annular track 510 and the outer annular track 520 are spaced apart in the radial direction to form an annular space 530, four sets of extension shafts 540 are arranged in the annular space 530, the four sets of extension shafts 540 are respectively coaxially fixed with the rotation centers of the blocking plate one 321, the blocking plate two 322, the blocking plate three 331 and the blocking plate four 332, and the four sets of extension shafts 540 are respectively connected with the gear one 541, the gear two 542, the gear three 543 and the gear four 544 corresponding to the blocking plate one 321, the blocking plate two 322, the blocking plate three 331 and the blocking plate four 332; that is, the blocking plate one 321 corresponds to the gear one 541, the blocking plate two 322 corresponds to the gear two 542, the blocking plate three 331 corresponds to the gear three 543, and the blocking plate four 332 corresponds to the gear four 544, the extension shafts 540 are used as the extensions of the blocking plate one 321, the blocking plate two 322, the blocking plate three 331 and the blocking plate four 332, and the corresponding blocking pieces are driven to open and close by driving the extension shafts 540 with different gears to rotate, so as to realize the state change of the blocking pieces when the fan-shaped unit 300 is in the horizontal state and the vertical state.

[0059] The outer wall of the inner annular track 510 is paved with a set of rotating closing teeth 511 and a set of rotating closing teeth 512, and the inner wall of the outer annular track 520 is paved with a set of rotating opening teeth 521 and a set of rotating opening teeth 522, the set of rotating opening teeth 521 and the set of rotating closing teeth 511 are spaced apart in the axial direction from the set of rotating closing teeth 512 and the set of rotating opening teeth 522, the set of rotating opening teeth 521 and the set of rotating closing teeth 511 correspond to the gear one 541 and the gear three 543, and the set of rotating closing teeth 512 and the set of rotating opening teeth 522 correspond to the gear two 542 and the gear four 544; that is, when the four sets of extension shafts 540 rotate in the annular space 530, the gear one 541 and the gear three 543 can be engaged with the set of rotating closing teeth 511 and the set of rotating opening teeth 521 to rotate, and the gear two 542 and the gear four 544 can be engaged with the set of rotating closing teeth 512 and the set of rotating opening teeth 522 to rotate.

[0060] The tea leaf turning step is as follows: Figure 3The current state of the shown fan unit 300 is the starting state. With the rotation of the fan unit 300, the four extension shafts 540 revolve with the rotation of the fan unit 300, and then the gear one 541 meshes with the closing tooth set one 511 and makes the closing plate one 321 close, and the gear two 542 meshes with the closing tooth set two 512 and makes the closing plate two 322 close, so that the closing plate one 321 and the closing plate two 322 gradually close in the process of the fan unit 300 changing from the horizontal state to the vertical state. With the continuous rotation of the fan unit 300, the gear three 543 meshes with the opening tooth set one 521, and the gear four 544 meshes with the opening tooth set two 522, so that the closing plate three 331 and the closing plate four 332 are synchronously opened. At this time, the fan unit 300 changes from the vertical state to the horizontal state again, and the positions of the closing plate one 321, the closing plate two 322, the closing plate three 331 and the closing plate four 332 are reversed, realizing the turning of the tea leaves.

[0061] It should be noted that the tooth sets on the inner annular track 510 and the outer annular track 520 are only arranged in the angle range of the fan unit changing from the horizontal state to the vertical state, and not arranged around the whole.

[0062] Figure 7 The structure diagram of the spacer 600 is shown; Figure 7 Among them, the spacer 600 is arranged between the two adjacent fan units 300, and the spacer 600 is connected outside the center support cylinder 200. The end face of the spacer 600 towards the fan unit 300 is arranged as an arc structure with the rotation center of the fan unit 300 as the center, and the radius of the arc structure is adapted to the rotation radius of the fan unit 300. The spacer 600 is used to separate the two adjacent fan units 300 to avoid interference between them.

[0063] Embodiment 2

[0064] The working method of the tea fermentation device includes the following steps:

[0065] S1: loading stage;

[0066] The tea leaves to be fermented are evenly laid in the plurality of fan units 300 distributed uniformly around the center support cylinder 200, the opening and closing door 120 of the fermentation tank 100 is closed, and the fermentation is started;

[0067] S2: tea turning;

[0068] The driving assembly 400 is started to rotate the driving spindle 410 and drive each fan-shaped unit 300 to rotate around the axis of the driven spindle 430 through the meshing transmission between the driving bevel gear 420 and the driven bevel gear 440. In the rotating process of the fan-shaped unit 300, the two end sealing members are controlled to be opened and closed adaptively through the linkage assembly 500: in the horizontal state, the downward sealing assembly one 320 or the sealing assembly two 330 is closed to support the tea leaves, and the upward sealing assembly two 330 or the sealing assembly one 320 is opened to make the tea leaves contact with the fermentation environment; in the vertical state, the sealing assembly one 320 and the sealing assembly two 330 are both closed to limit the sliding of the tea leaves and make the tea leaves be distributed uniformly, so that the tea leaves are turned over in the rotation and the upper and lower layers are replaced, the fermentation state is maintained until the fermentation of the tea leaves is completed.

[0069] S3: unloading stage;

[0070] The driving assembly 400 is stopped, and the opening and closing door 120 is opened to take out the fermented tea leaves.

[0071] The above examples are only used to illustrate the technical solutions of the present application, but not limit it.

Claims

1. A tea fermentation device, characterized in that, include: Fermentation tank (100); A central support cylinder (200) is coaxially disposed inside the fermenter (100); The fan-shaped unit (300) is used to carry the tea leaves to be fermented. The fan-shaped unit (300) is evenly arranged in multiple groups around the central support cylinder (200) and surrounds it to form a tray assembly. The drive assembly (400) includes a drive spindle (410) passing through the central support cylinder (200), a drive bevel gear (420) fixed on the drive spindle (410), a driven shaft (430) with one end connected to the sector unit (300) and the other end extending into the central support cylinder (200), and a driven bevel gear (440) fixed to the extended end of the driven shaft (430) and meshing with the drive bevel gear (420). When the drive spindle (410) rotates, it drives the driven shaft (430) to rotate the fan-shaped unit (300) around its own axis, so that the tea leaves in the fan-shaped unit (300) are flipped over during the rotation to replace the tea leaves between the upper and lower layers.

2. The tea fermentation apparatus according to claim 1, characterized in that, The sector unit (300) includes a support frame (310) and two sets of openable and closable sealing members covering both ends of the support frame (310). The sector unit (300) has at least a horizontal state and a vertical state during rotation. In the horizontal state, the set of sealing parts facing downwards closes to support the tea leaves laid in the fan-shaped unit (300), while the set of sealing parts facing upwards opens and closes to allow the tea leaves laid in the fan-shaped unit (300) to continue fermenting in contact with the environment. In the vertical position, both sets of sealing components are closed to restrict the sliding of the tea leaves so that they are evenly distributed within the fan-shaped unit (300).

3. The tea fermentation apparatus according to claim 2, characterized in that, The two sets of sealing components are sealing component one (320) which covers one end face of the support frame (310) and sealing component two (330) which covers the other end face of the support frame (310); The first sealing assembly (320) includes a first sealing plate (321) and a second sealing plate (322) rotatably disposed on both sides of the support frame (310), and the first sealing plate (321) and the second sealing plate (322) can be rotated inward to close. The second sealing component (330) includes a third sealing plate (331) and a fourth sealing plate (332) rotatably disposed on both sides of the support frame (310), and the third sealing plate (331) and the fourth sealing plate (332) can be rotated inward to close.

4. The tea fermentation apparatus according to claim 3, characterized in that, The sealing plate one (321), sealing plate two (322), sealing plate three (331) and sealing plate four (332) are all provided with pressure strips (340) on their inner end faces. The pressure strips (340) on the sealing plate one (321) and sealing plate two (322) are interlaced. The sealing plate one (321) and sealing plate four (332) are opposite to each other and the pressure strips (340) are interlaced. The fan-shaped unit (300) forms a wave-shaped space inside in the vertical state to restrict the sliding of tea leaves.

5. The tea fermentation apparatus according to claim 3, characterized in that, The sector unit (300) rotates to open and close the sealing element via a linkage assembly (500). The linkage assembly (500) includes an inner annular rail (510) and an outer annular rail (520) coaxially arranged with the rotation center of the sector unit (300). Both the inner annular rail (510) and the outer annular rail (520) are installed outside the central support cylinder (200). The inner annular rail (510) and the outer annular rail (520) are arranged at intervals along a radial path to form an annular space (530). 30) is provided with four sets of extension shafts (540). The four sets of extension shafts (540) are coaxially fixed with the rotation centers of sealing plate one (321), sealing plate two (322), sealing plate three (331) and sealing plate four (332), respectively. The four sets of extension shafts (540) are respectively connected with gear one (541), gear two (542), gear three (543) and gear four (544) corresponding to sealing plate one (321), sealing plate two (322), sealing plate three (331) and sealing plate four (332).

6. The tea fermentation apparatus according to claim 5, characterized in that, The outer wall of the inner annular rail (510) is provided with a first closed gear group (511) and a second closed gear group (512), and the inner wall of the outer annular rail (520) is provided with a first open gear group (521) and a second open gear group (522). The first open gear group (521), the first closed gear group (511), the second closed gear group (512), and the second open gear group (522) have an axial spacing. The first open gear group (521) and the first closed gear group (511) correspond to gear one (541) and gear three (543), and the second closed gear group (512) and the second open gear group (522) correspond to gear two (542) and gear four (544).

7. The tea fermentation apparatus according to claim 1, characterized in that, The sector unit (300) is provided with a partition (600) between two adjacent sector units (300). The partition (600) is connected to the outside of the central support cylinder (200). The end face of the partition (600) facing the sector unit (300) is set as an arc structure with the rotation center of the sector unit (300) as the center, and the radius of the arc structure is adapted to the rotation radius of the sector unit (300).

8. The tea fermentation apparatus according to claim 6, characterized in that, The tray assembly is provided in multiple sets and is equidistantly distributed along the central support cylinder (200) axial direction.

9. The tea fermentation apparatus according to claim 6, characterized in that, The fermentation tank (100) has a feed inlet (110) on its side, and an opening and closing door (120) is rotatably installed on the feed inlet (110).

10. The method of operating the tea fermentation apparatus according to any one of claims 1-9, characterized in that, Includes the following steps: S1: Loading stage; The tea leaves to be fermented are evenly spread in multiple fan-shaped units (300) that are evenly distributed around the central support cylinder (200), and the opening and closing door (120) of the fermentation tank (100) is closed to start fermentation. S2: Turn the tea leaves over; The drive assembly (400) is activated, causing the drive spindle (410) to rotate. Through the meshing of the active bevel gear (420) and the driven bevel gear (440), each sector unit (300) rotates around its own axis of the driven shaft (430). During the rotation of the sector unit (300), the sealing components at both ends are controlled to open and close adaptively by the linkage assembly (500): In the horizontal state, the downward-facing sealing component one (320) or sealing component two (330) closes to support the tea leaves, and the upward-facing sealing component two (330) or sealing component one (320) opens to allow the tea leaves to come into contact with the fermentation environment; in the vertical state, both sealing component one (320) and sealing component two (330) close to restrict the sliding of the tea leaves and make them evenly distributed, so that the tea leaves can be turned over and the upper and lower layers can be replaced during the rotation, and this fermentation state is maintained until the tea fermentation is completed. S3: Unloading stage; Stop the drive assembly (400), open the opening and closing door (120) and take out the fermented tea leaves.

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