Tea leaf processing fermentation device

Abstract

The application discloses a tea leaf processing fermentation device, and relates to the technical field of tea leaf fermentation equipment, which comprises a fermentation box body, a shelf assembly, a fermentation sieve disc and a comb-tooth type oxygen supply and leaf turning mechanism. The support guide rail of the shelf assembly can swing up and down and support the fermentation sieve disc. The fitting inclined plate is fixed to the support guide rail and the opening thereof is communicated with the exhaust channel of the fermentation sieve disc. The plurality of hollow combs of the comb-tooth type oxygen supply and leaf turning mechanism are fixed to the lower surface of the gas distribution seat and are driven by the screw rod group to move above the fermentation sieve disc. After the box door is closed, the support guide rail drives the fermentation sieve disc to rise, so that the hollow combs extend into the surface layer of the tea leaves. The gas is released from the side wall of the hollow comb. The air flow is discharged through the exhaust channel, the fitting inclined plate, the wind deflector and the air exhaust pipe, so that the oxygen supply and air extraction circulation is formed in the tea layer, and the uniformity of the gas exchange in the tea layer during the tea leaf fermentation process is improved.

Description

Technical Field

[0001] This invention relates to the field of tea fermentation equipment technology, and in particular to a tea processing fermentation device. Background Technology

[0002] During the tea fermentation process, tea leaves are usually spread on multiple layers of sieves and placed in a fermentation chamber for temperature, humidity and ventilation control. Existing fermentation chambers mostly supply air to the surface of the tea leaves through internal circulating air ducts or external humidification and air supply structures. The renewal of oxygen and humidity inside the tea layer mainly depends on natural diffusion between the tea leaves.

[0003] When the tea leaves in the sieve tray are of a certain thickness, differences in oxygen supply, humidity and temperature can easily form between the surface and the interior of the tea layer. When relying solely on air supply from the box space, it is difficult for the airflow to enter the interior of the tea layer stably. Furthermore, the turning of the tea leaves usually depends on manual operation or independent turning parts, which can easily lead to cumbersome operation, uneven gas circulation and inconsistent local fermentation of the tea leaves.

[0004] Therefore, providing a tea processing fermentation device that can simultaneously generate internal oxygen supply, internal air extraction, and surface disturbance of the tea layer after the sieve tray enters the fermentation chamber has high practical application value. Summary of the Invention

[0005] The purpose of this invention is to provide a tea processing and fermentation apparatus to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a tea processing fermentation device, comprising a fermentation chamber, wherein a shelf assembly, a fermentation sieve, and a comb-type oxygen supply and leaf turning mechanism are arranged inside the fermentation chamber. The shelf assembly includes a supporting guide rail and a fitting inclined plate. The supporting guide rail is swayably disposed inside the fermentation chamber and supports the fermentation sieve. The fitting inclined plate is fixed to the supporting guide rail and located on the side of the fermentation sieve. An opening is provided on the side of the fitting inclined plate facing the fermentation sieve. The fermentation sieve is provided with an exhaust vent. The fermentation sieve is connected to the supporting guide rail... After the extension direction of the rail is pushed in and supported by the support rail, the exhaust channel is connected to the opening. The comb-type oxygen supply and leaf turning mechanism includes hollow comb teeth, gas distribution seat, screw slide and screw assembly. There are multiple hollow comb teeth. Multiple hollow comb teeth are fixedly set on the lower surface of the gas distribution seat and connected to the gas distribution seat. The screw slide is fixedly connected to the gas distribution seat. The screw assembly drives the screw slide to move along the top of the fermentation sieve. When the support rail swings up, it drives the fermentation sieve to rise, so that the hollow comb teeth extend into the surface of the tea leaves in the fermentation sieve.

[0007] Furthermore, the shelf assembly, fermentation sieve trays, and comb-type oxygen supply and leaf turning mechanism are all multi-layered. Each fermentation sieve tray is equipped with a set of support guide rails, a set of fitting inclined plates, a set of gas distribution seats, a set of screw slides, and a set of screws.

[0008] Furthermore, the shelf assembly also includes lateral support rails, mounting frames, fixing frames, and support arms. The lateral support rails are fixed to opposite sides of the mounting frames, the fixing frames are fixed below the lateral support rails, one end of the support arm is hinged to the fixing frame, and the other end of the support arm is hinged to the support guide rail.

[0009] Furthermore, the fermentation chamber includes a door and an inner frame fixed to the inside of the door. A top rod is threaded onto one end of the support rail. When the door is closed, the inner frame presses against the top rod and causes the support rail to swing upward. When the door is opened, the top rod disengages from the inner frame and the support rail swings downward by gravity.

[0010] Furthermore, a guide wheel is rotatably mounted on the support rail, and the guide wheel is located below the edge of the fermentation sieve tray and rolls against the edge of the fermentation sieve tray.

[0011] Furthermore, an inner support is fixed inside the fermentation chamber. The upper swing termination position of the support rail is limited by the abutment between the inner support and the top rod, and the lower swing termination position of the support rail is limited by the abutment between the lower surface of the support rail and the upper surface of the fixing frame.

[0012] Furthermore, each fermentation sieve tray includes a perforated plate and a sieve tray frame. The perforated plate is fixed inside the sieve tray frame, and the exhaust groove is formed on the side wall of the sieve tray frame. The fitting inclined plate is fitted to the side wall of the sieve tray frame.

[0013] Furthermore, a sliding sealing ring is provided at the edge of the opening of the inclined plate, and the sliding sealing ring slides and seals with the side wall of the sieve tray frame. A wind guide hood is provided on the side of the inclined plate facing away from the fermentation sieve tray. The wind guide hood is connected to the opening and is connected to an exhaust pipe. The exhaust pipe includes a flexible pipe section. Each layer of exhaust pipes merges into the main exhaust pipe on the side of the fermentation chamber. The main exhaust pipe is connected to the air extraction equipment.

[0014] Furthermore, each layer of the comb-type oxygen supply leaf-turning mechanism also includes a comb support and an air inlet pipe. The comb support is fixed to the lower surface of the gas distribution seat. Multiple hollow comb teeth pass through the comb support and are fixed to the lower surface of the gas distribution seat. Multiple hollow comb teeth are spaced apart along the length of the gas distribution seat. The air inlet pipe is connected to the gas distribution seat and the oxygen supply equipment. Each layer of screw assembly independently drives the corresponding screw slide.

[0015] Furthermore, the lower end of the hollow comb teeth is closed, and the side wall of the hollow comb teeth is provided with air vents. The hollow comb teeth are made of elastic material, and the upper end of the hollow comb teeth is fixed to the lower surface of the gas distribution seat and communicates with the inner cavity of the gas distribution seat. The part of the hollow comb teeth that extends out of the comb tooth support forms an elastic bending section. When the fermentation sieve rises to the position where the hollow comb teeth extend into the surface of the tea leaves, there is a gap between the lower end of the hollow comb teeth and the sieve plate.

[0016] The technical effects and advantages of this invention are as follows: 1. This invention features a support rail that can swing up and down, a fermentation sieve, a gas distribution seat, and multiple hollow comb teeth. After the fermentation sieve is pushed into the fermentation chamber, it is first supported and positioned by the support rail. Then, after the chamber door is closed, the support rail drives the fermentation sieve to rise, allowing the hollow comb teeth to enter the surface of the tea leaves. This shifts the oxygen supply from the chamber space to the interior of the tea layer, reducing the difference between the gas supply on the surface and the internal gas supply of the tea layer, and improving the consistency of oxygen supply and humidity distribution inside the tea leaves during the fermentation process. 2. This invention fixes the inclined plate to the support rail and connects the exhaust groove of the fermentation sieve plate with the opening of the inclined plate after it is pushed in. This ensures that the exhaust groove and the inclined plate maintain a corresponding relationship when the fermentation sieve plate swings up with the support rail. With the help of the air guide hood, exhaust pipe, main exhaust pipe and exhaust equipment, the gas can be discharged from above the tea layer through the tea layer, the sieve plate and the exhaust groove, thereby forming a top-down exhaust circulation path and improving the continuity of the flow of oxygen-containing gas after it enters the tea layer. 3. This invention, by setting up a top rod, inner frame, support arm, fixing frame and inner bracket, transforms the closing action of the box door into the upward swing action of the support guide rail. After the box door is opened, the support guide rail swings down to reset by gravity. With the help of the guide wheel rolling support on the edge of the fermentation sieve, the hard friction and jamming of the fermentation sieve are reduced when switching between the pick-up and drop position and the working position. At the same time, by limiting the upper swing termination position and the lower swing termination position, the consistency of the lifting position of the multi-layer sieve is improved. 4. This invention features a hollow comb tooth structure with a closed lower end, air vents on the side walls, and made of elastic material. This allows gas to be released from the side walls of the hollow comb tooth to the surface of the tea leaves. At the same time, the hollow comb tooth can elastically avoid collisions during movement, reducing the risk of hard interference between the comb tooth and tea clumps or the sieve plate. Furthermore, the gap between the lower end of the hollow comb tooth and the sieve plate reduces scratching and collisions with the sieve plate and the bottom layer of tea leaves. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 This is a schematic diagram of the internal multi-layer structure of the present invention after part of the outer shell has been removed.

[0019] Figure 3 This is a schematic diagram of the single-layer shelf assembly, fermentation sieve tray, and comb-type oxygen supply and leaf turning mechanism in this invention.

[0020] Figure 4 This is a front view schematic diagram of the single-layer shelf assembly and fermentation sieve tray in this invention.

[0021] Figure 5 This is a schematic diagram of the bottom structure of the present invention, showing the coordinated state of the supporting guide rail, the inclined plate, and the fermentation sieve tray.

[0022] Figure 6 This is a schematic diagram of the exploded structure of the fermentation sieve disc in this invention.

[0023] Figure 7 This is a schematic diagram of the comb-type oxygen supply leaf-turning mechanism installed on the shelf assembly in this invention.

[0024] Figure 8 This is a partial structural diagram of the guide rail in this invention.

[0025] Figure 9 This is a schematic diagram of the comb-type oxygen supply and leaf-turning mechanism in this invention.

[0026] In the diagram: 1. Fermentation chamber; 11. Chamber door; 12. Inner frame; 13. Inner support; 2. Shelf assembly; 21. Lateral support rail; 22. Mounting frame; 23. Support rail; 231. Fixing frame; 232. Support arm; 233. Top rod; 234. Guide wheel; 235. Fitting inclined plate; 2351. Air guide hood; 2352. Exhaust pipe; 3. Fermentation sieve tray; 31. Sieve perforated plate; 32. Sieve tray frame; 33. Exhaust duct; 4. Comb-type oxygen supply and leaf turning mechanism; 41. Comb bracket; 42. Hollow comb teeth; 421. Air outlet; 43. Gas distribution seat; 431. Air inlet pipe; 44. Screw slide; 441. Screw assembly. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] like Figures 1 to 9 As shown, a tea processing fermentation device according to the present invention includes a fermentation box 1, a shelf assembly 2, a fermentation sieve 3, and a comb-type oxygen supply and leaf turning mechanism 4. The fermentation box 1 forms a box space for tea fermentation. The shelf assembly 2 is arranged in multiple layers along the height direction of the fermentation box 1. The fermentation sieve 3 is used to hold the tea to be fermented. The comb-type oxygen supply and leaf turning mechanism 4 is correspondingly arranged above the fermentation sieve 3 and is used to supply oxygen-containing gas to the surface and interior of the tea during the fermentation process.

[0029] A door 11 is provided on the front side of the fermentation chamber 1. An inner frame 12 is fixed inside the door 11. An inner support 13 is fixed inside the fermentation chamber 1. After the door 11 is closed, the inner frame 12 enters the opening of the fermentation chamber 1 and forms a pressing fit with the top rod 233. The inner support 13 is located on the movement path of the top rod 233 and is used to cooperate with the top rod 233 to limit the upper swing termination position of the support rail 23.

[0030] The shelf assembly 2 includes a lateral support rail 21, a mounting frame 22, a support guide rail 23, a fixing frame 231, a support arm 232, a top rod 233, a guide wheel 234, and a fitting inclined plate 235. The lateral support rail 21 is fixed on the opposite sides of the mounting frame 22 and forms the pull-out mounting base for each layer of fermentation sieve tray 3. The fixing frame 231 is fixed below the lateral support rail 21. One end of the support arm 232 is hinged to the fixing frame 231, and the other end of the support arm 232 is hinged to the support guide rail 23, so that the support guide rail 23 can swing up and down relative to the fixing frame 231 under the guidance of the support arm 232.

[0031] The top rod 233 is installed at one end of the support guide rail 23 by means of threads. By turning the top rod 233, the extension length of the top rod 233 relative to the support guide rail 23 can be adjusted, thereby adjusting the end height of the inner frame 12 pushing the support guide rail 23 upward after the box door 11 is closed, so that the height of the fermentation sieve 3 after it rises can match the depth of the hollow comb teeth 42 into the surface of the tea leaves. After the top rod 233 is adjusted, its installation position is kept stable by locking it with a nut or by thread self-locking.

[0032] When the door 11 is closed, the inner frame 12 presses against the top rod 233, and the top rod 233 transmits the pressure to the support rail 23, causing the support rail 23 to swing upward under the guidance of the support arm 232. When the door 11 is opened, the top rod 233 disengages from the pressure of the inner frame 12, and the support rail 23 swings downward to reset by its own weight and the weight of its supporting components. The upward swing termination position of the support rail 23 is limited by the abutting cooperation between the inner bracket 13 and the top rod 233, and the downward swing termination position of the support rail 23 is limited by the abutting between the lower surface of the support rail 23 and the upper surface of the fixing frame 231.

[0033] A guide wheel 234 is rotatably mounted on the support rail 23. The guide wheel 234 is located below the edge of the fermentation sieve tray 3. When the fermentation sieve tray 3 is pushed in along the extension direction of the support rail 23, the edge of the fermentation sieve tray 3 is supported by the rolling of the guide wheel 234. The guide wheel 234 can reduce the friction between the edge of the fermentation sieve tray 3 and the support rail 23 during the process of pushing the fermentation sieve tray 3 in, pulling it out, and swinging it up with the support rail 23.

[0034] The fermentation sieve 3 includes a perforated plate 31 and a sieve frame 32. The perforated plate 31 is fixed inside the sieve frame 32 and is used to support the tea leaves. The side wall of the sieve frame 32 forms an exhaust groove 33. After the fermentation sieve 3 is pushed into the support guide rail 23, the exhaust groove 33 is located at the corresponding position of the opening of the inclined plate 235, so that the gas in the fermentation sieve 3 can be discharged through the perforated plate 31 and the exhaust groove 33.

[0035] The inclined plate 235 is fixed on the support rail 23, so that the inclined plate 235 can swing up and down synchronously with the support rail 23. Since the fermentation sieve 3 is supported by the support rail 23 and rises and falls synchronously with the support rail 23, the relative position between the inclined plate 235 and the sieve frame 32 remains stable during the rising and falling process. This ensures that the opening of the exhaust groove 33 and the inclined plate 235 remain connected after the fermentation sieve 3 is pushed in and after the support rail 23 is swung up.

[0036] A sliding sealing ring is provided around the opening of the inclined plate 235. The sliding sealing ring is made of moisture- and heat-resistant rubber or silicone. The sliding sealing ring forms a flexible fitting edge on the side facing the sieve plate frame 32. When the fermentation sieve plate 3 is pushed in along the support guide rail 23, the sieve plate frame 32 can slide along the flexible fitting edge of the sliding sealing ring. After the fermentation sieve plate 3 is pushed in place, the sliding sealing ring forms a sealing contact around the outside of the exhaust groove 33 to reduce bypass leakage during exhaust.

[0037] A guide hood 2351 is provided on the side of the inclined plate 235 facing away from the fermentation sieve tray 3. The guide hood 2351 is connected to the opening of the inclined plate 235 and the guide hood 2351 is connected to the exhaust pipe 2352. Each layer of exhaust pipe 2352 is set separately and merges into the main exhaust pipe on the side of the fermentation chamber 1. The exhaust pipe 2352 includes a flexible pipe section to adapt to the positional changes of the inclined plate 235 as it swings up and down with the support guide rail 23.

[0038] In this embodiment, the air extraction device adopts an open air extraction structure consisting of a fan, a filter, a negative pressure regulating valve, and a main exhaust pipe. The fan is used to create negative pressure in the main exhaust pipe, the filter is used to intercept tea dust and impurities in the airflow, the negative pressure regulating valve is used to adjust the air extraction intensity of each layer, and after the exhaust pipes 2352 of each layer are connected to the main exhaust pipe, each fermentation sieve 3 can form an air extraction path through the corresponding exhaust channel 33.

[0039] The comb-type oxygen supply leaf-turning mechanism 4 includes a comb support 41, hollow comb teeth 42, a gas distribution seat 43, an air inlet pipe 431, a lead screw slide 44, and a lead screw assembly 441. The gas distribution seat 43 forms a gas distribution chamber inside. The air inlet pipe 431 is connected to the gas distribution seat 43. The oxygen supply equipment delivers oxygen-containing gas to the gas distribution seat 43 through the air inlet pipe 431. The gas distribution seat 43 then distributes the gas to multiple hollow comb teeth 42.

[0040] In this embodiment, the oxygen supply equipment adopts an open gas supply structure consisting of an air pump, a humidifier, an oxygen source, a pressure reducing valve, a flow valve, and a hose connector. The air pump is used to input air, the oxygen source is used to supplement oxygen, the humidifier is used to adjust the gas humidity, the pressure reducing valve and the flow valve are used to adjust the output pressure and output flow, and the hose connector is used to connect the oxygen supply equipment to the air inlet pipe 431, thereby providing humid air or oxygen-containing gas to the gas distribution seat 43.

[0041] The lead screw slide 44 is fixedly connected to the gas distribution seat 43. The lead screw assembly 441 is installed above each layer of fermentation sieve tray 3 and independently drives the corresponding lead screw slide 44 to reciprocate. The lead screw assembly 441 adopts a public linear drive structure composed of a motor, lead screw, nut slider and linear guide. The motor drives the lead screw to rotate, the nut slider drives the lead screw slide 44 to move, and the linear guide restricts the movement direction of the lead screw slide 44, so that the gas distribution seat 43 and multiple hollow comb teeth 42 can move laterally above the fermentation sieve tray 3.

[0042] The comb tooth support 41 is fixed to the lower surface of the gas distribution seat 43. Multiple hollow comb teeth 42 pass through the comb tooth support 41 and are fixed to the lower surface of the gas distribution seat 43. The upper end of the hollow comb teeth 42 communicates with the inner cavity of the gas distribution seat 43. Multiple hollow comb teeth 42 are spaced apart along the length of the gas distribution seat 43. The comb tooth support 41 is used to stably support the arrangement of the multiple hollow comb teeth 42. The gas distribution seat 43 is used to distribute the gas entering its inner cavity to the multiple hollow comb teeth 42.

[0043] The lower end of the hollow comb tooth 42 is closed, and the side wall of the hollow comb tooth 42 has an air outlet 421. The hollow comb tooth 42 is made of an elastic material selected from rubber, silicone, and soft polyurethane. The part of the hollow comb tooth 42 that extends below the comb tooth support 41 forms an elastic bending section. When the hollow comb tooth 42 moves laterally with the gas distribution seat 43 and contacts the tea clump, the elastic bending section can laterally swing and rebound, thereby forming an elastic floating avoidance against the resistance of the tea.

[0044] When the fermentation sieve 3 rises to the working position, the hollow comb teeth 42 enter the surface layer of tea leaves above the sieve plate 31. A gap is maintained between the lower end of the hollow comb teeth 42 and the sieve plate 31. This gap prevents the hollow comb teeth 42 from directly scraping the sieve plate 31 during movement and elastic swaying, thereby reducing the risk of the hollow comb teeth 42 breaking, the tea leaves being hard-scraped, and the sieve plate 31 being damaged.

[0045] During operation, the fermentation sieve 3, which is covered with tea leaves, is first pushed into the fermentation chamber 1 along the support guide rail 23. The guide wheel 234 rolls and supports the edge of the fermentation sieve 3. After the fermentation sieve 3 is pushed into place, the exhaust channel 33 is aligned with the opening of the fitting inclined plate 235 and a sealed connection is formed through the sliding sealing ring. Then the chamber door 11 is closed, the inner frame 12 presses against the top rod 233 and pushes the support guide rail 23 to swing upward under the guidance of the support arm 232. The support guide rail 23 drives the fermentation sieve 3 and the fitting inclined plate 235 to rise synchronously, so that the hollow comb teeth 42 enter the surface of the tea leaves and the lower end of the hollow comb teeth 42 maintains a gap with the sieve plate 31.

[0046] During fermentation, the oxygen supply equipment delivers oxygen-containing gas or humid air to the gas distribution seat 43 via the air inlet pipe 431. The gas distribution seat 43 distributes the gas to multiple hollow comb teeth 42. The gas is released from the air outlet 421 on the side wall of the hollow comb teeth 42 to the surface and interior of the tea leaves. The screw assembly 441 drives the screw slide 44 to move back and forth. The screw slide 44 drives the gas distribution seat 43 and the hollow comb teeth 42 to move laterally, so that the hollow comb teeth 42 comb and disturb the surface of the tea leaves while supplying gas.

[0047] After the exhaust equipment is started, the exhaust pipes 2352 of each layer draw gas through the openings of the air guide hood 2351 and the inclined plate 235 to the exhaust channel 33. The gas in the tea layer enters the main exhaust pipe and is discharged through the perforated plate 31, the exhaust channel 33, the inclined plate 235, the air guide hood 2351 and the exhaust pipe 2352. Thus, a gas circulation path is formed in the fermentation sieve 3, in which the hollow comb teeth 42 supply gas and the exhaust channel 33 draws gas, so that the interior of the tea layer continuously exchanges oxygen-containing gas.

[0048] After fermentation is complete, open the box door 11. The inner frame 12 releases the pressure on the top rod 233. The support rail 23 swings downward under the action of gravity. The fermentation sieve 3 descends with the support rail 23 and disengages from the hollow comb 42. The support rail 23 swings down until its lower surface abuts against the upper surface of the fixed frame 231 and then stops. The operator can then pull out the fermentation sieve 3 along the support rail 23.

[0049] In summary, this invention achieves the switching between the pick-up and drop height and the working height of the fermentation sieve 3 by the up-and-down swing of the support rail 23, adjusts the working height of the fermentation sieve 3 after it rises by the top rod 233, achieves internal oxygen supply and surface combing of the tea layer by the hollow comb teeth 42, and achieves top-down air extraction circulation by the exhaust channel 33, the fitting inclined plate 235, the air guide hood 2351 and the exhaust pipe 2352, so that the oxygen supply, air extraction and leaf turning actions in the tea fermentation process are linked and coordinated.

[0050] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A tea processing fermentation apparatus, characterized in that, include: Fermentation chamber (1), which is equipped with a shelf assembly (2), a fermentation sieve tray (3) and a comb-type oxygen supply and leaf turning mechanism (4). The shelf assembly (2) includes a support rail (23) and a fitting inclined plate (235). The support rail (23) is swaying up and down inside the fermentation box (1) and supports the fermentation sieve plate (3). The fitting inclined plate (235) is fixed to the support rail (23) and located on the side of the fermentation sieve plate (3). The fitting inclined plate (235) has an opening on the side facing the fermentation sieve plate (3). The fermentation sieve (3) is provided with an exhaust groove (33). After the fermentation sieve (3) is pushed in along the extension direction of the support rail (23) and supported by the support rail (23), the exhaust groove (33) is connected to the opening. The comb-type oxygen supply and leaf turning mechanism (4) includes hollow comb teeth (42), gas distribution seat (43), screw slide (44) and screw assembly (441). There are multiple hollow comb teeth (42), and multiple hollow comb teeth (42) are fixedly set on the lower surface of the gas distribution seat (43) and communicate with the gas distribution seat (43). The screw slide (44) is fixedly connected to the gas distribution seat (43). The screw assembly (441) drives the screw slide (44) to move along the upper part of the fermentation sieve (3). When the support guide rail (23) swings up, it drives the fermentation sieve (3) to rise, so that the hollow comb teeth (42) extend into the surface of the tea leaves in the fermentation sieve (3).

2. The tea processing fermentation apparatus according to claim 1, characterized in that: The shelf assembly (2), the fermentation sieve (3) and the comb-type oxygen supply and leaf turning mechanism (4) are all multi-layered. Each fermentation sieve (3) is provided with a set of support guide rails (23), a set of fitting inclined plates (235), a set of gas distribution seats (43), a set of screw slides (44) and a set of screw groups (441).

3. The tea processing fermentation apparatus according to claim 1, characterized in that: The shelf assembly (2) further includes a lateral support rail (21), a mounting frame (22), a fixing frame (231), and a support arm (232). The lateral support rail (21) is fixed to the opposite sides of the mounting frame (22), the fixing frame (231) is fixed below the lateral support rail (21), one end of the support arm (232) is hinged to the fixing frame (231), and the other end of the support arm (232) is hinged to the support guide rail (23).

4. The tea processing fermentation apparatus according to claim 3, characterized in that: The fermentation chamber (1) includes a door (11) and an inner frame (12) fixed inside the door (11). One end of the support rail (23) is threaded with a top rod (233). When the door (11) is closed, the inner frame (12) presses against the top rod (233) and drives the support rail (23) to swing upward. When the door (11) is opened, the top rod (233) disengages from the pressure of the inner frame (12), and the support rail (23) swings downward by gravity.

5. The tea processing fermentation apparatus according to claim 1, characterized in that: A guide wheel (234) is rotatably mounted on the support rail (23). The guide wheel (234) is located below the edge of the fermentation sieve (3) and rolls against the edge of the fermentation sieve (3).

6. The tea processing fermentation apparatus according to claim 4, characterized in that: The fermentation box (1) is fixed with an inner support (13). The upper swing termination position of the support rail (23) is limited by the abutment between the inner support (13) and the top rod (233). The lower swing termination position of the support rail (23) is limited by the abutment between the lower surface of the support rail (23) and the upper surface of the fixing frame (231).

7. The tea processing fermentation apparatus according to claim 2, characterized in that: Each fermentation sieve tray (3) includes a perforated plate (31) and a sieve tray frame (32). The perforated plate (31) is fixed inside the sieve tray frame (32). The exhaust groove (33) is formed on the side wall of the sieve tray frame (32). The fitting inclined plate (235) is fitted to the side wall of the sieve tray frame (32).

8. The tea processing fermentation apparatus according to claim 7, characterized in that: The edge of the opening of the fitting inclined plate (235) is provided with a sliding sealing ring, which is slidably sealed to the side wall of the sieve tray frame (32). The side of the fitting inclined plate (235) facing away from the fermentation sieve tray (3) is provided with a wind guide hood (2351), which is connected to the opening. The wind guide hood (2351) is connected to an exhaust pipe (2352), which includes a flexible pipe section. Each layer of the exhaust pipe (2352) merges into the main exhaust pipe on the side of the fermentation box (1), which is connected to the exhaust equipment.

9. A tea processing fermentation apparatus according to claim 2, characterized in that: Each layer of the comb-type oxygen supply leaf-turning mechanism (4) also includes a comb support (41) and an air inlet pipe (431). The comb support (41) is fixed to the lower surface of the gas distribution seat (43). Multiple hollow comb teeth (42) pass through the comb support (41) and are fixed to the lower surface of the gas distribution seat (43). Multiple hollow comb teeth (42) are spaced apart along the length direction of the gas distribution seat (43). The air inlet pipe (431) is connected to the gas distribution seat (43) and to the oxygen supply equipment. Each layer of the screw assembly (441) independently drives the corresponding screw slide (44).

10. A tea processing fermentation apparatus according to claim 9, characterized in that: The lower end of the hollow comb tooth (42) is closed, and the side wall of the hollow comb tooth (42) is provided with an air outlet (421). The hollow comb tooth (42) is made of elastic material. The upper end of the hollow comb tooth (42) is fixed to the lower surface of the gas distribution seat (43) and communicates with the inner cavity of the gas distribution seat (43). The part of the hollow comb tooth (42) extending out of the comb tooth support (41) forms an elastic bending section. The fermentation sieve (3) includes a sieve plate (31). When the fermentation sieve (3) rises to the position where the hollow comb tooth (42) extends into the surface of the tea, there is a gap between the lower end of the hollow comb tooth (42) and the sieve plate (31).

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