Multi-temperature-zone tea fermentation box

Abstract

This invention provides a multi-temperature zone tea fermentation box, comprising: a base with a transmission chamber on one side; a box body fixedly installed on the top of the base; a main shaft, which is vertically oriented and rotatably installed inside the box body, the bottom of the main shaft movably passing through the top of the base and extending into the transmission chamber; a top cover fixedly installed on the top of the main shaft, the outer wall of the top cover fitting against the inner wall of the fermentation chamber; and a drive mechanism for driving the main shaft to rotate installed in the transmission chamber. When fermenting tea, this invention allows for the transfer of tea to another fermentation chamber for fermentation when different temperature and humidity environments are required, through the cooperation of the drive mechanism and the main shaft. This eliminates the need for personnel to manually feed and transfer the tea during fermentation, replacing the previous method of manually feeding and transferring the tea to another fermentation chamber, thus reducing workload and improving work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of tea processing technology, specifically to a multi-temperature zone tea fermentation box. Background Technology

[0002] Tea fermentation is a crucial step in the processing of teas such as black tea, oolong tea, and dark tea, and its quality is directly affected by factors such as temperature, humidity, and oxygen. Traditional fermentation processes typically employ natural spreading or fermentation in a fixed temperature and humidity environment, relying on manual experience for adjustment. This approach has the following technical drawbacks: Low precision in temperature and humidity control: Traditional methods result in large fluctuations in temperature and humidity (e.g., black tea fermentation requires 28℃~30℃ and 80%~85% humidity), easily leading to under-fermentation or over-fermentation, affecting the formation of key flavor compounds such as theaflavins and thearubigins, and reducing tea quality; Low production efficiency: Manual adjustment is difficult to standardize and cannot adapt to the differentiated needs of different fermentation stages.

[0003] To address the aforementioned issues, electric heating + steam humidification fermentation chambers have emerged on the market. These chambers use heating plates for temperature rise and steam pipes for humidification, combined with a PLC (Programmable Logic Controller) to achieve automated temperature and humidity control, thereby improving the stability and controllability of fermentation. However, existing technologies still have the following shortcomings: Most fermentation boxes are single-unit designs, which cannot meet the needs of multi-stage tea fermentation. When tea needs to be transferred to different temperature and humidity environments, staff must manually transfer the tea to another fermentation box, which greatly increases the workload of staff and reduces work efficiency. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a multi-temperature zone tea fermentation box, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A multi-temperature zone tea fermentation box, comprising: The base has a transmission compartment on one side. The box is fixedly installed on the top of the base, and a fermentation chamber is opened inside the box. The main shaft is vertically and rotatably installed inside the housing. The bottom of the main shaft moves through the top of the base and extends into the transmission chamber. A top cover is fixedly installed on the top of the main shaft. The outer side wall of the top cover fits against the inner side wall of the fermentation chamber. A drive mechanism for driving the main shaft to rotate is installed in the transmission chamber. There are three partitions, which are fixedly installed on the outer wall of the main shaft in a ring array. The side of the partition away from the main shaft can fit against the inner wall of the fermentation chamber. A support tray is fixedly connected to the bottom position of two adjacent partitions that are close to each other. The support frame, placed on the support tray, is used to hold the tea leaves to be fermented. On the outer wall of the box, near each pair of adjacent partitions, there is a feeding port connected to the inside of the fermentation chamber. A sealing door, hinged to the box, is used to block the feeding port and is secured to the box with a snap fastener. A heating plate and a ventilation pipe are fixedly installed on the near side of each pair of adjacent partitions. Multiple nozzles, all connected to the inside of the ventilation pipe, are fixedly installed on the ventilation pipe. A solenoid valve is fixedly installed at the top of the ventilation pipe, penetrating the top cover. An air inlet pipe extending into the fermentation chamber is fixedly installed at the center of the top of the box. A rotating joint is fixedly installed at the bottom of the air inlet pipe, above the top cover. The bottom of the rotating joint is connected to the other ends of three solenoid valves via a diverter pipe.

[0006] This invention provides a multi-temperature zone tea fermentation box. Compared with the prior art, it has the following advantages: 1. When tea is fermented, if the tea needs to be transferred to a different temperature and humidity environment, the tea can be transferred to another fermentation chamber for fermentation through the cooperation of the drive mechanism and the main shaft. This eliminates the need for personnel to manually feed and transfer the tea during the fermentation process, replacing the previous method of feeding the tea into the fermentation chamber and then transferring it to another fermentation chamber. This reduces the workload of the staff and improves work efficiency. 2. The design of the snap-fit ​​plate, plug-in hole and snap-fit ​​hole makes the tea drawer and the upright rod detachable, which facilitates the installation and removal of the tea drawer, and thus facilitates the loading or unloading of tea leaves in the tea drawer. 3. Through the design of the rotating shaft, motor, support plate, and stirring rod, during the fermentation process of feeding tea into the fermentation chamber, the tea trays located on both sides of the upright are alternately brought close to the heating plate and ventilation pipe located on opposite sides of the two partitions. This is beneficial for the overall fermentation of the tea on the support rack. Furthermore, during the rotation of the main shaft, the air inside the fermentation chamber is turbulent through multiple stirring rods, which helps to make the overall temperature and humidity inside the fermentation chamber more uniform, further facilitating the overall fermentation of the tea on the support rack. Attached Figure Description

[0007] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0008] Figure 1 A three-dimensional structural schematic diagram of the present invention is shown; Figure 2 A schematic diagram of the installation structure of the drive mechanism of this utility model is shown; Figure 3 This utility model illustrates Figure 2 Enlarged view of point A in the middle; Figure 4 A schematic diagram of the installation structure of the heating plate of this utility model is shown; Figure 5 A schematic diagram of the installation structure of the positioning frame of this utility model is shown; Figure 6 A schematic diagram of the installation structure of the limiting rod of this utility model is shown; Figure 7 A schematic diagram of the installation structure of the tea drawer of this utility model is shown; Figure 8 A schematic diagram of the mounting structure of the snap-fit ​​plate of this utility model is shown.

[0009] The diagram shows: 1. Base; 11. Transmission chamber; 12. Drive mechanism; 121. Drive motor; 122. Bevel gear assembly; 13. Inspection plate; 2. Box body; 21. Fermentation chamber; 22. Feeding port; 23. Sealing door; 24. Air inlet pipe; 25. Rotary joint; 26. Diverter pipe; 3. Main shaft; 31. Top cover; 32. Motor; 4. Partition plate; 41. Support tray; 42. Heating plate; 43. Ventilation pipe; 44. Nozzle; 45. Electromagnetic nozzle. 5. Valve; 6. Support frame; 7. Support; 8. Center column; 9. Bracket; 10. Upright; 11. Insertion hole; 12. Snap-fit ​​hole; 13. Snap-fit ​​block; 14. Tea drawer; 15. Vent hole; 16. Snap-fit ​​plate; 17. Positioning mechanism; 18. Positioning frame; 19. Guide groove; 10. Center hole; 11. Pin hole; 12. Limiting rod; 13. Rotating shaft; 14. Snap-fit ​​groove; 15. Electric slip ring; 16. Support plate; 17. Stirring rod. Detailed Implementation

[0010] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0011] As an embodiment of this utility model, to solve the technical problems in the background art, the following multi-temperature zone tea fermentation box is provided: [Combined with...] Figures 1-8 As shown, it includes: The base 1 has a transmission compartment 11 on one side; Box 2 is fixedly installed on the top of base 1, and fermentation chamber 21 is opened inside box 2; The main shaft 3 is vertically mounted and rotatably installed inside the housing 2. The bottom of the main shaft 3 moves through the top of the base 1 and extends into the transmission chamber 11. A top cover 31 is fixedly installed on the top of the main shaft 3. The outer side wall of the top cover 31 fits the cross section between the outer side wall of the fermentation chamber 21 and the inner side wall of the fermentation chamber 21. A drive mechanism 12 for driving the main shaft 3 to rotate is installed in the transmission chamber 11. There are three partitions 4, which are fixedly installed on the outer wall of the main shaft 3 in a ring array. The side of the partition 4 away from the main shaft 3 can fit against the inner wall of the fermentation chamber 21. A support tray 41 is fixedly connected to the bottom position of two adjacent partitions 4 that are close to each other. The support frame 5 is placed on the support tray 41 and is used to hold the tea leaves to be fermented.

[0012] In one embodiment of this utility model, a feeding port 22 communicating with the inside of the fermentation chamber 21 is provided on the outer wall of the box body 2 on the side where each of the two adjacent partitions 4 is close to each other. A sealing door 23 for sealing the feeding port 22 is hinged to the box body 2. Specifically, the sealing door 23, the two partitions 4, and the support tray 41, i.e. the top cover 31, form a fermentation chamber between the two adjacent partitions 4. It is worth noting that a temperature and humidity integrated sensor is fixedly installed on the sealing door 23, and the temperature and humidity integrated sensors on the three sealing doors 23 form different temperature zones inside the three fermentation chambers. The installation and selection of the temperature and humidity integrated sensor are the technology of those skilled in the art and will not be described in detail here.

[0013] Furthermore, the preferred model for the integrated temperature and humidity sensor is DHT11. The sealing door 23 is fixed to the box 2 via a snap fastener. A heating plate 42 and a vent pipe 43 are fixedly installed on the side of two adjacent partitions 4 that are close to each other. The heating plate 42 contains an electric heating wire, which converts electrical energy into heat energy when energized, thereby achieving the heating effect in the fermentation chamber. Multiple nozzles 44, all connected to the interior of the vent pipe 43, are fixedly installed on the vent pipe 43. A solenoid valve 45 is fixedly installed at the top of the vent pipe 43, penetrating the top cover 31. Both the solenoid valve 45 and the heating plate 42 are integrated... The device is controlled by an external electrical control cabinet with a PLC control system. The temperature and humidity sensor is connected to the PLC control system. The PLC control system has preset temperature and humidity thresholds for each fermentation chamber. An air inlet pipe 24 extending into the fermentation chamber 21 is fixedly installed at the top center of the box 2. The top of the air inlet pipe 24 is connected to the external steam delivery end. A rotary joint 25 is fixedly installed at the bottom of the air inlet pipe 24 and above the top cover 31. The bottom of the rotary joint 25 is connected to the other end of three solenoid valves 45 through a diverter pipe 26. The device is powered by an external power source.

[0014] In one embodiment of this utility model, when fermenting tea, the tea to be fermented is placed on the support frame 5, the sealing door 23 is closed and fixed to the box body 2 with buckles, and the heating plate 42 located in the fermentation chamber is opened by the external electrical control cabinet, so that the temperature in the fermentation chamber rises and water vapor is delivered into the air inlet pipe 24 through the external steam delivery end. By controlling the opening of the solenoid valve 45 located at the top of the air pipe 43 in the fermentation chamber, steam can be delivered into the fermentation chamber. During this period, the temperature and humidity integrated sensor monitors the temperature and humidity in the fermentation chamber in real time and feeds it back to the PLC control system. The PLC control system controls the heating plate 42 in the fermentation chamber to close or open, and controls the solenoid valve 45 at the top of the air pipe 43 in the fermentation chamber to regulate the steam flow into the air pipe 43, thereby regulating the temperature and humidity in the fermentation chamber.

[0015] Furthermore, when it is necessary to adjust the temperature and humidity environment of the tea fermentation chamber, the drive mechanism 12 rotates the main shaft 3 120 degrees on the base 1, causing the three partitions 4 to rotate around the main shaft 3, which in turn drives the support tray 41 to rotate around the main shaft 3, thereby moving the support frame 5 to an adjacent fermentation chamber. At this time, the temperature and humidity of the fermentation chamber are monitored by the temperature and humidity sensors located in the adjacent fermentation chamber. The PLC control system controls the heating plate 42 in the fermentation chamber to close or open, and controls the solenoid valve 45 at the top of the ventilation pipe 43 in the fermentation chamber to adjust the steam flow rate into the ventilation pipe 43, thereby adjusting the temperature and humidity of the fermentation chamber to meet the temperature and humidity required for tea fermentation at this stage.

[0016] During this period, staff can feed a new batch of tea leaves into the previous fermentation chamber for fermentation, and so on. This allows the three fermentation chambers to simultaneously ferment tea leaves at different stages of fermentation. Through the cooperation of the drive mechanism 12 and the main shaft 3, the tea leaves can be transferred to another fermentation chamber for fermentation. This eliminates the need for staff to manually feed and transfer the tea leaves during the fermentation process, replacing the previous method of feeding and transferring tea leaves to another fermentation chamber. This reduces the workload of staff and improves work efficiency.

[0017] In one embodiment of this utility model, combined with Figure 1 - Figure 8 As shown, the drive mechanism 12 includes a drive motor 121 fixedly installed in the transmission compartment 11. The output shaft of the drive motor 121 is connected to the main shaft 3 through a bevel gear assembly 122. The bevel gear assembly 122 includes two meshing bevel gears. One bevel gear is coaxially fixed to the main shaft 3, and the other bevel gear is coaxially fixed to the output shaft of the drive motor 121. In use, the drive motor 121 is turned on, and the output shaft of the drive motor 121 rotates, which drives the main shaft 3 to rotate through the bevel gear assembly 122.

[0018] In one embodiment of this utility model, combined with Figure 1 - Figure 8 As shown, the support frame 5 includes a support 51 placed on the support tray 41 through the feeding port 22. A vertical pole 52 is mounted on the top of the support 51. Placement units are arranged in a vertical linear array on the outer wall of the vertical pole 52. Each placement unit includes tea trays 53 symmetrically arranged on the outer wall of the vertical pole 52. The top of each tea tray 53 is open, and multiple ventilation holes 531 communicating with its interior are provided on the outer wall and bottom of each tea tray 53. A positioning mechanism 6 for positioning the support 51 is installed on the support tray 41. In use, the tea leaves to be fermented are placed in multiple tea trays 53, and then the support 51 and uprights 52 are placed on the support tray 41 through the feeding port 22, thus completing the placement of the support frame 5 and the feeding effect of the tea leaves to be fermented. Through the design of the positioning mechanism 6, after the support 51 and uprights 52 are placed on the support tray 41 through the feeding port 22, the positioning mechanism 6 positions the support 51, thus completing the overall positioning of the support frame 5 and improving the stability of the support frame 5.

[0019] In one embodiment of this utility model, combined with Figure 1 - Figure 8 As shown, the support 51 includes a central column 511, and three brackets 512 are fixedly arranged in a ring on the outer wall of the central column 511. The uprights 52 are installed on the central column 511.

[0020] In one embodiment of this utility model, the positioning mechanism 6 includes a positioning frame 61 fixedly installed on the support tray 41. A guide groove 62 is symmetrically provided on one side of the positioning frame 61. The cross-sections of the two guide grooves 62 form a V-shape. A central hole 63 is provided on the positioning frame 61 at the connection of the two guide grooves 62. The bottom of the central hole 63 and the bottom of the guide grooves 62 both penetrate the bottom of the positioning frame 61. One bracket 512 can be movably inserted through the central hole 63. The other two brackets 512 can be respectively inserted into the two guide grooves 62 and fit against the inner wall of the guide grooves 62. A pin hole 64 extending into the guide grooves 62 is provided at the top of the positioning frame 61. A limiting rod 65 is inserted on the positioning frame 61 and located in the pin hole 64. When the two brackets 512 are respectively inserted into the two guide grooves 62 and fit against the inner wall of the guide grooves 62, the limiting rod 65 abuts against the side wall of the bracket 512.

[0021] Based on the above technical concept, during use, when the support 51 and the upright 52 are placed on the support tray 41 through the feeding port 22, one of the supports 512 passes through the central hole 63, and the upright 52 is pushed to insert the other two supports 512 into the two guide grooves 62 respectively, so that the two supports 512 are in contact with the inner walls of the two guide grooves 62 respectively. Then, the operator inserts the two limiting rods 65 into the two pin holes 64 respectively, so that the limiting rods 65 abut against the side wall of the support 512, thereby limiting the support 51 and fixing its position. Conversely, the operator pulls out the two limiting rods 65 from the two pin holes 64 respectively, thereby canceling the limiting of the support 51 and canceling the fixing of the support 51's position. The operator can then pull out and disassemble the support 51 and the upright 52 through the feeding port 22. The operation is simple.

[0022] In one embodiment of this utility model, combined with Figure 1 - Figure 8 As shown, both sides of the upright 52 are provided with insertion holes 521. Inside the upright 52 and below the insertion holes 521, there is a snap-fit ​​hole 522 communicating with the insertion holes 521. The tea drawer 53 is integrally formed with a snap-fit ​​plate 532. The snap-fit ​​plate 532 can move through the insertion holes 521 and extend into the snap-fit ​​hole 522. When the end of the snap-fit ​​plate 532 extends into the snap-fit ​​hole 522, the snap-fit ​​plate 532 and the upright 52 are snapped together. Through the design of the snap-fit ​​plate 532, the insertion holes 521 and the snap-fit ​​hole 522, the tea drawer 53 and the upright 52 are detachable. When in use, people... The operator inserts the snap-fit ​​plate 532 into the insertion hole 521, and then applies a downward pressure to the tea tray 53, causing the bottom of the snap-fit ​​plate 532 to extend into the insertion hole 522, whereby the snap-fit ​​plate 532 and the upright 52 are snapped together, thus completing the installation and positioning of the tea tray 53. Conversely, the operator applies an upward pushing force to the tea tray 53, causing the snap-fit ​​plate 532 to move above the insertion hole 522, allowing the snap-fit ​​plate 532 to move through the insertion hole 521. At this point, the operator can pull the tea tray 53 outward to disassemble it, facilitating the installation and disassembly of the tea tray 53, and thus facilitating the loading or unloading of tea leaves inside the tea tray 53.

[0023] In one embodiment of this utility model, combined with Figure 1 - Figure 8 As shown, the upright 52 is rotatably mounted on the top of the central column 511 via a bearing. The top of the upright 52 is integrally formed with a snap-fit ​​block 523. A vertically shaped rotating shaft 7 is rotatably mounted on the top cover 31 above the upright 52. A snap-fit ​​groove 71 is opened at the bottom of the rotating shaft 7. When the two brackets 512 are respectively inserted into the two guide grooves 62 and fit against the inner wall of the guide grooves 62, the snap-fit ​​block 523 is inserted into the snap-fit ​​groove 71 and snaps into the rotating shaft 7. A motor 32 for driving the rotating shaft 7 to rotate is fixedly mounted on the top of the top cover 31. A support plate 9 is fixedly mounted on the outer wall of the upright 52 below the insertion hole 521.

[0024] Based on the above technical concept, it should be noted that when the snap-fit ​​plate 532 and the upright rod 52 are snapped together, the bottom of the tea tray 53 is in contact with the top of the support plate 9, achieving the effect of supporting the tea tray 53 through the support plate 9. The bottom of the support plate 9 is fixedly installed with stirring rods 91 in a horizontal linear array. Through the design of the rotating shaft 7, motor 32, support plate 9 and stirring rods 91, during the fermentation process of tea leaves being fed into the fermentation chamber, the snap-fit ​​block 523 is inserted into the snap-fit ​​groove 71 and snapped with the rotating shaft 7. During the tea fermentation process, the control... When the motor 32 is turned on, it drives the rotating shaft 7 to rotate on the top cover 31, which in turn drives the upright 52 to rotate. This causes the tea trays 53 located on both sides of the upright 52 to alternately approach the heating plate 42 and the vent pipe 43 located on opposite sides of the two partitions 4. This is beneficial for the overall fermentation of the tea leaves on the support frame 5. Furthermore, during the rotation of the main shaft 3, the air inside the fermentation chamber is turbulent by multiple stirring rods 91, which helps to make the overall temperature and humidity inside the fermentation chamber more uniform, further facilitating the overall fermentation of the tea leaves on the support frame 5.

[0025] In one embodiment of this utility model, combined with Figure 1 - Figure 8 As shown, a maintenance plate 13 for sealing the opening of the transmission compartment 11 is fixedly installed on the base 1 with screws, achieving the effect of sealing the opening of the transmission compartment 11, making the equipment more aesthetically pleasing and reasonable. An electric slip ring 8 is fixedly installed on the top wall of the inner box 2 and directly below the rotary joint 25. The electric slip ring 8 is model JSR-MPV08. One end of the electric slip ring 8 is connected to the external electrical control cabinet through multiple wires, and the other end is connected to multiple motors 32, multiple solenoid valves 45 and multiple heating plates 42 through multiple wires. The drive motors 121, 32, solenoid valves 45 and heating plates 42 are all controlled by the external electrical control cabinet. Through the design of the electric slip ring 8, when the main shaft 3 drives multiple motors 32, multiple solenoid valves 45 and multiple heating plates 42 to rotate around the main shaft 3, the electric slip ring 8 rotates itself, effectively avoiding the situation of multiple wires 2 getting tangled.

[0026] Working principle and usage process of this utility model: When fermenting tea leaves, one of the sealed doors 23 is opened, and the personnel pull out the two limit rods 65 from the two pin holes 64 respectively. The personnel then pull out and disassemble the support 51 and the upright 52 through the feeding port 22. The personnel then apply an upward pushing force to the tea tray 53, causing the snap plate 532 to move above the snap hole 522. The tea tray 53 is then pulled outward to disassemble it. The tea leaves to be fermented are fed into the tea tray 53, and the tea tray 53 is then installed on the upright 52. The support 51 and the upright 52 are placed on the support tray 41 through the feeding port 22, so that one of the brackets 512 passes through the central hole 63. The upright 52 is pushed so that the other two brackets 512 are inserted into the two guide grooves 62 respectively, and the snap block 523 is inserted into the snap groove 71 and snapped into the rotating shaft 7. The two brackets 512 are respectively attached to the inner walls of the two guide grooves 62.

[0027] Personnel then insert the two limiting rods 65 into the two pin holes 64 respectively to fix the position of the support 51; close the sealing door 23 and fix the sealing door 23 to the box body 2 with the buckle; use the external electrical control cabinet to control the heating plate 42 located in the fermentation chamber to open, so that the temperature in the fermentation chamber rises, and water vapor is delivered into the air inlet pipe 24 through the external steam delivery end; by controlling the opening of the solenoid valve 45 located at the top of the air pipe 43 in the fermentation chamber, steam can be delivered into the fermentation chamber. During this period, the temperature and humidity integrated sensor monitors the temperature and humidity in the fermentation chamber in real time and feeds it back to the PLC control system. The PLC control system controls the heating plate 42 in the fermentation chamber to close or open, and controls the solenoid valve 45 at the top of the air pipe 43 in the fermentation chamber to regulate the steam flow into the air pipe 43, thereby regulating the temperature and humidity in the fermentation chamber to meet the temperature and humidity requirements of tea fermentation.

[0028] At the same time, the control motor 32 is turned on, driving the rotating shaft 7 to rotate on the top cover 31, which in turn drives the upright 52 to rotate. This causes the tea trays 53 located on both sides of the upright 52 to alternately approach the heating plate 42 and the vent pipe 43 located on opposite sides of the two partitions 4. This is beneficial for the overall fermentation of the tea leaves on the support frame 5. Furthermore, during the rotation of the main shaft 3, the air inside the fermentation chamber is turbulent through multiple stirring rods 91, which helps to make the overall temperature and humidity inside the fermentation chamber more uniform, further facilitating the overall fermentation of the tea leaves on the support frame 5.

[0029] When tea needs to switch to different temperature and humidity environments, the control drive motor 121 is turned on, and the bevel gear assembly 122 drives the main shaft 3 to rotate 120 degrees, so that the three partitions 4 rotate around the main shaft 3, which in turn drives the tray 41 to rotate around the main shaft 3, thereby moving the support frame 5 to an adjacent fermentation chamber.

[0030] At this time, the temperature and humidity of the fermentation chamber are monitored by the temperature and humidity sensor located in the adjacent fermentation chamber. The heating plate 42 in the fermentation chamber is turned on or off by the PLC control system, and the solenoid valve 45 at the top of the ventilation pipe 43 in the fermentation chamber is controlled to regulate the steam flow into the ventilation pipe 43, thereby adjusting the temperature and humidity of the fermentation chamber to meet the temperature and humidity required for tea fermentation at this stage.

[0031] Thus, this invention achieves automated operation of the fermentation process, eliminating the need for manual feeding and transfer of tea leaves during fermentation, significantly reducing labor intensity and improving work efficiency. Furthermore, the design proposed in this invention allows for cyclical feeding of materials into the three fermentation chambers, enabling simultaneous and continuous processing of tea leaves at different fermentation stages, forming a highly efficient assembly line operation mode.

[0032] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A multi-temperature zone tea fermentation box, characterized in that: include: The base has a transmission compartment on one side; The box is fixedly installed on the top of the base, and a fermentation chamber is opened inside the box. The main shaft is vertically and rotatably installed inside the housing. The bottom of the main shaft moves through the top of the base and extends into the transmission chamber. A top cover is fixedly installed on the top of the main shaft. The outer side wall of the top cover fits against the inner side wall of the fermentation chamber. A drive mechanism for driving the main shaft to rotate is installed in the transmission chamber. There are three partitions, which are fixedly installed on the outer wall of the main shaft in a ring array. The side of the partition away from the main shaft can fit against the inner wall of the fermentation chamber. The bottom of two adjacent partitions is fixedly connected to a support tray. The support frame, placed on the support tray, is used to hold the tea leaves to be fermented. On the outer wall of the box, on the side where each pair of adjacent partitions is close to each other, there is a feeding port that communicates with the inside of the fermentation chamber. The box is hinged with a sealing door for sealing the feeding port, and the sealing door is fixed to the box with a buckle. A heating plate and a vent pipe are fixedly installed on the side where each pair of adjacent partitions is close to each other. Multiple nozzles that communicate with the inside of the vent pipe are fixedly installed on the vent pipe. A solenoid valve is fixedly installed at the top of the vent pipe through the top cover. An air inlet pipe extending into the fermentation chamber is fixedly installed at the middle of the top of the box. A rotating joint is fixedly installed at the bottom of the air inlet pipe, above the top cover. The bottom of the rotating joint is connected to the other end of each of the three solenoid valves through a diverter pipe.

2. The multi-temperature zone tea fermentation box according to claim 1, characterized in that: The drive mechanism includes a drive motor fixedly installed in the transmission compartment, and the output shaft of the drive motor is connected to the main shaft through a bevel gear assembly.

3. The multi-temperature zone tea fermentation box according to claim 1, characterized in that: The support frame includes a support placed on a tray through a feeding port. A vertical pole is installed on the top of the support. Placement units are arranged in a vertical linear array on the outer side wall of the vertical pole. Each placement unit includes a tea tray symmetrically arranged on the outer side wall of the vertical pole. The top of the tea tray is open, and multiple ventilation holes communicating with the interior are opened on the outer side wall and bottom of the tea tray. A positioning mechanism for positioning the support is installed on the tray.

4. The multi-temperature zone tea fermentation box according to claim 3, characterized in that: The support includes a central column, and three brackets are fixedly mounted in a ring array on the outer wall of the central column. The upright is installed on the central column. The positioning mechanism includes a positioning frame fixedly installed on the support tray. A guide groove is symmetrically opened on one side of the positioning frame, and the cross-section of the two guide grooves forms a V shape. A central hole is opened on the positioning frame at the connection of the two guide grooves. The bottom of the central hole and the bottom of the guide groove both penetrate the bottom of the positioning frame. One bracket can be movably opened through the central hole, and the other two brackets can be inserted into the two guide grooves respectively and fit against the inner wall of the guide groove. A pin hole extending into the guide groove is opened on the top of the positioning frame, and a limiting rod is inserted on the positioning frame at the pin hole.

5. A multi-temperature zone tea fermentation box according to claim 3, characterized in that: Both sides of the upright are provided with insertion holes, and a snap-fit ​​hole is provided inside the upright and below the insertion hole, which is connected to the insertion hole. A snap-fit ​​plate is integrally formed on the tea drawer. The snap-fit ​​plate can move through the insertion hole and extend into the snap-fit ​​hole. When the end of the snap-fit ​​plate extends into the snap-fit ​​hole, the snap-fit ​​plate and the upright are snapped together.

6. A multi-temperature zone tea fermentation box according to claim 5, characterized in that: The upright is rotatably mounted on the top of the central column via bearings. A snap-fit ​​block is integrally formed on the top of the upright. A vertically oriented rotating shaft is rotatably mounted on the top cover above the upright. A snap-fit ​​groove is opened at the bottom of the rotating shaft. When the two brackets are respectively inserted into the two guide grooves and fit against the inner wall of the guide grooves, the snap-fit ​​block is inserted into the snap-fit ​​groove and snaps into the upright. A motor for driving the rotating shaft to rotate is fixedly installed on the top of the top cover. A support plate is fixedly installed on the outer wall of the upright below the insertion hole. A stirring rod is fixedly installed in a horizontal linear array at the bottom of the support plate.

7. A multi-temperature zone tea fermentation box according to claim 1, characterized in that: An inspection plate for sealing the opening of the transmission compartment is fixedly installed on the base by screws, and an electric slip ring is fixedly installed on the top wall of the box body and directly below the rotary joint.

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