Black tea oxygen control integrated fermentation box

Abstract

The application discloses a black tea oxygen control integrated fermentation box, which comprises a fermentation box, a sealing door and an electric control system are arranged on the fermentation box, air supplementing devices, air replacing devices and air humidifying devices and pipelines are arranged on the outer side of the fermentation box, a plurality of groups of sensors, a plurality of groups of material loading structures and air flow structures are arranged in the fermentation box. The oxygen content and the nitrogen content in the sealed environment are controlled, a low-oxygen, oxygen-rich and oxygen-free environment is created to correspond to the fermentation process, the synchronization degree of the internal and external fermentation of tea raw materials is improved, and the uniformity of the fermentation processing quality is improved. The air flow state is created in the fermentation space, the porous design of the material basket is matched, and the overall uniform and unified fermentation progress of the tea raw material pile is facilitated. The temperature, humidity and oxygen content are accurately monitored, the fermentation process is flexibly matched, and the fermentation quality and the fermentation uniformity are greatly improved.

Description

Technical Field

[0001] This utility model relates to the technical field of tea processing equipment, and in particular to an integrated oxygen-controlled fermentation box for black tea. Background Technology

[0002] Black tea is one of the basic tea categories. It belongs to the fully fermented tea category and is made from the buds and leaves of the tea plant through typical processes such as withering, rolling, fermentation, and drying. Fermentation is the key step in black tea processing. Currently, black tea fermentation involves placing the tea leaves in fermentation baskets or carts and placing them in a fermentation chamber. The temperature and humidity inside the chamber are regulated artificially by heating and humidifying. However, because the structure of the tea leaves has already been damaged during the initial rolling process, the surface of the tea leaves piled up in the fermentation chamber is often more easily oxidized and moistened. The contact time between the tea leaves inside the pile and the oxygen and moisture is significantly different from that on the outer surface, resulting in uneven fermentation quality. Following a uniform fermentation process can easily lead to under-fermentation or over-fermentation, resulting in differences in quality even within the same batch of tea. Summary of the Invention The technical problem this invention aims to solve is to provide an integrated oxygen-controlled fermentation box for black tea. This box controls oxygen and nitrogen content within a sealed environment, creating low-oxygen, oxygen-rich, and anaerobic environments to complement the fermentation process. This improves the synchronization of fermentation inside and outside the tea raw material pile, enhancing the uniformity of fermentation processing quality. The fermentation space maintains airflow, and the porous design of the material basket facilitates uniform and consistent fermentation of the tea raw material pile. Precise monitoring of temperature, humidity, and oxygen content, combined with flexible integration with the fermentation process, significantly improves fermentation quality and uniformity.

[0003] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: an integrated oxygen-controlled fermentation box for black tea, including a fermentation box, a sealed door and an electrical control system on the fermentation box, an air supply device, an air exchange device and a humidification device and pipelines on the outside of the fermentation box, and multiple sets of sensors, multiple sets of material carrying structures and air flow structures inside the fermentation box. The gas supply device is equipped with a first vent pipe and a second vent pipe that are connected to the space inside the fermentation chamber.

[0004] In a preferred embodiment, the bottom of the ventilation device is provided with a V-shaped exhaust port.

[0005] In a preferred embodiment, the pipeline includes an air supply pipe with one end connected to a humidification device, the other end of which extends into the fermentation chamber and is connected to a gas distribution pipe. The two ends of the gas distribution pipe are symmetrically provided with gas dispersing pipes, which are fixedly connected to the inner wall of the fermentation chamber through a fixing seat. The gas dispersing pipes are provided with multiple gas dispersing holes.

[0006] In a preferred embodiment, the multiple sets of sensors include a temperature sensor, a humidity sensor, an oxygen concentration sensor, and a nitrogen concentration sensor.

[0007] In a preferred embodiment, the material-carrying structure includes multiple sets of trays fixedly connected to the inner wall of the fermentation tank, with multiple sets of limiting grooves on the trays, and a storage basket that slides within the limiting grooves. In a preferred embodiment, the sidewall and bottom of the storage basket are respectively provided with multiple sets of evenly distributed first and second ventilation holes.

[0008] In a preferred embodiment, the airflow structure includes a blower installed at the bottom of the space inside the fermentation chamber. The blower has two symmetrically arranged air ducts, and the air ducts have symmetrically arranged air outlets. On the two air outlets of one side of the air duct, there are multiple sets of symmetrically arranged first air outlets, and on the middle axis of symmetry of the two air outlets of the other side of the air duct, there are multiple sets of second air outlets.

[0009] The integrated oxygen-controlled fermentation box for black tea provided by this utility model, by adopting the above-mentioned structure, has the following beneficial effects: (1) Control the oxygen and nitrogen content in a sealed environment to create low-oxygen, oxygen-rich and anaerobic environments to match the fermentation process, improve the synchronization of fermentation inside and outside the tea raw material pile, and improve the uniformity of fermentation processing quality. (2) Create an airflow state in the fermentation space, and with the porous design of the material basket, it is easy to push the tea raw material pile to ferment in a uniform and even manner. (3) Accurate monitoring of temperature, humidity and oxygen content, combined with flexible matching of fermentation process, greatly improves fermentation quality and uniformity. Attached Figure Description

[0010] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0011] Figure 2 This is a schematic diagram of the overall structure of this utility model.

[0012] Figure 3 This is a schematic diagram of the internal structure of the fermentation box of this utility model.

[0013] Figure 4 This is a schematic diagram of the internal structure of the fermentation box of this utility model.

[0014] Figure 5 This is a schematic diagram of the material-carrying structure of this utility model.

[0015] Figure 6 This is a schematic diagram of the airflow structure of this utility model.

[0016] In the diagram: 1. Fermentation chamber; 2. Sealed door; 3. Electrical control system; 4. Gas supply device; 5. First vent pipe; 6. Second vent pipe; 7. Air exchange device; 8. Humidification device; 9. Gas supply pipe; 10. Gas distribution pipe; 11. Gas dispersing pipe; 12. Fixing base; 13. Gas dispersing hole; 14. V-shaped exhaust port; 15. Sensor; 16. Material carrying structure; 17. Air flow structure; 18. Support plate; 19. Limiting slide groove; 20. Material storage basket; 21. First vent hole; 22. Second vent hole; 23. Blower; 24. Air guide pipe; 25. Air outlet surface; 26. First air outlet; 27. Second air outlet. Detailed Implementation

[0017] Example 1: like Figure 1-6 The integrated oxygen-controlled fermentation box for black tea includes a fermentation box 1 with a sealed fermentation space. The fermentation box 1 is equipped with a sealed door 2 for opening and closing the fermentation space. The joint between the sealed door 2 and the fermentation box 1 is equipped with a sealing structure to ensure the airtightness during the fermentation process. An electrical control system 3 is used to control the operation of various components. The outside of the fermentation box 1 is equipped with an air replenishment device 4 for adjusting the gas composition inside the box, an air exchange device 7 for expelling waste gas inside the box, a humidification device 8 for maintaining the humidity inside the box, and supporting pipelines. Inside the fermentation box 1, there are multiple sets of sensors 15 for real-time monitoring of environmental parameters, multiple sets of material-carrying structures 16 for carrying tea raw materials, and an airflow structure 17 for promoting gas circulation inside the box. The air replenishment device 4 is equipped with a first vent pipe 5 and a second vent pipe 6 that communicate with the space inside the fermentation box 1. The two vent pipes are respectively arranged for different height areas inside the fermentation box 1 to ensure that the air replenishment process evenly covers the entire fermentation space.

[0018] In a preferred embodiment, the bottom of the ventilation device 7 is provided with a V-shaped exhaust port 14. The V-shaped structure can increase the exhaust coverage area and guide the gas in the box to concentrate towards the exhaust port, so as to achieve uniform discharge of exhaust gas.

[0019] In a preferred embodiment, the pipeline includes an air supply pipe 9 connected at one end to the humidification device 8, and the other end of the air supply pipe 9 extends into the fermentation box 1 and is connected to a horizontally arranged air distribution pipe 10. Both ends of the air distribution pipe 10 are symmetrically provided with air diffuser pipes 11 extending longitudinally along the inner wall of the fermentation box 1. The air diffuser pipe 11 is fixedly connected to the inner wall of the fermentation box 1 through a fixing seat 12. The air diffuser pipe 11 is provided with a plurality of air diffuser holes 13 evenly arranged along the length of the pipe. Moisture is released in a diffused manner through the air diffuser holes 13 to ensure uniform humidity distribution inside the box.

[0020] In a preferred embodiment, the multiple sets of sensors 15 include a temperature sensor, a humidity sensor, an oxygen concentration sensor, and a nitrogen concentration sensor. Each sensor is evenly distributed at different heights and in different areas within the fermentation chamber 1, and collects environmental parameters at the corresponding locations in real time and transmits them to the electronic control system 3.

[0021] In a preferred embodiment, the material-carrying structure 16 includes multiple sets of trays 18 arranged vertically and horizontally along the inner wall of the fermentation box 1. Each tray 18 is provided with multiple sets of parallel limiting grooves 19. Each limiting groove 19 is provided with a storage basket 20 that slides within it. The storage basket 20 can be pulled out and moved along the limiting groove 19 to facilitate loading and unloading of tea raw materials.

[0022] In a preferred embodiment, the side wall and bottom of the storage basket 20 are provided with multiple sets of evenly distributed first ventilation holes 21 and second ventilation holes 22. The ventilation holes penetrate the inner and outer spaces of the storage basket 20 to ensure that gas and moisture can penetrate the storage basket and fully contact the tea leaves inside.

[0023] In a preferred embodiment, the airflow structure 17 includes a blower 23 located at the bottom of the space inside the fermentation chamber 1. The blower 23 has two symmetrically arranged air guide pipes 24 extending along the length of the fermentation chamber 1. The air guide pipes 24 have symmetrically arranged air outlet surfaces 25 facing the material-carrying structure 16. Multiple sets of symmetrically arranged first air outlet holes 26 are provided on the two air outlet surfaces 25 of one side of the air guide pipe 24, and multiple sets of second air outlet holes 27 are provided at the middle axis of symmetry of the two air outlet surfaces 25 of the other side of the air guide pipe 24. The arrangement directions of the first air outlet holes 26 and the second air outlet holes 27 are coordinated to form a multi-directional circulating airflow, ensuring that the gas inside the chamber flows without dead corners.

[0024] Example 2: like Figure 1-6 The working principle of this utility model is as follows: The raw materials of black tea to be fermented are evenly loaded into the storage basket 20. Then the storage basket 20 is pushed into the fermentation box 1 along the limiting groove 19 of the tray 18 so that the storage basket 20 is evenly arranged on the tray 18. The sealing door 2 is closed to ensure the airtightness of the fermentation box 1 through the sealing structure. The temperature, humidity, oxygen concentration and nitrogen concentration thresholds required for fermentation are preset through the electronic control system 3, and the fermentation program is started after the settings are completed. According to preset parameters, the electronic control system 3 controls the gas supply device 4 to deliver oxygen or nitrogen into the fermentation box 1 through the first vent pipe 5 and the second vent pipe 6, quickly adjusting the gas composition in the box to the preset range; at the same time, the humidification device 8 is activated, delivering moisture through the gas supply pipe 9 to the gas distribution pipe 10, and then diffusing and releasing it into the box through the gas dispersing hole 13 of the gas dispersing pipe 11, completing the humidity initialization. During the fermentation process, the blower 23 is started simultaneously. The airflow generated is diverted through the air duct 24 and then sprayed at different angles through the first air outlet 26 and the second air outlet 27 to form a multi-directional circulating airflow. On the one hand, it drives the uniform diffusion of moisture and oxygen (or nitrogen) in the box. On the other hand, it promotes the airflow to penetrate the first vent 21 and the second vent 22 of the storage basket 20 and fully contact the tea raw materials, eliminating the difference in contact between the gas and moisture inside and outside the pile. Multiple sensors 15 continuously collect data on temperature, humidity, oxygen concentration, and nitrogen concentration in different areas of the chamber and feed it back to the electronic control system 3 in real time. The electronic control system 3 compares the collected data with preset thresholds. If a parameter deviates from the threshold, it immediately and automatically adjusts the operation of the corresponding device. When gas needs to be replenished, the gas replenishment device 4 accurately replenishes the gas. When the humidity is insufficient, the humidification device 8 increases the humidity supply. When the gas flow is obstructed, the blower 23 adjusts the wind speed. When exhaust gas needs to be discharged, the ventilation device 7 evenly discharges some gas through the V-shaped exhaust port 14, ensuring that the environmental parameters remain stable within the preset range throughout the fermentation process. When the fermentation reaches the preset time, the electronic control system 3 issues a prompt signal, shuts down all operating devices, opens the sealing door 2, pulls out the storage basket 20, and completes the fermentation of black tea.

[0025] The beneficial effects of this invention are as follows: Controlling oxygen and nitrogen content within a sealed environment creates low-oxygen, oxygen-rich, and anaerobic environments to complement the fermentation process, improving the synchronization of fermentation inside and outside the tea raw material pile and enhancing the uniformity of fermentation processing quality; creating airflow within the fermentation space, combined with the porous design of the material basket, facilitates the uniform and consistent fermentation progress of the tea raw material pile; precise monitoring of temperature, humidity, and oxygen content, flexibly combined with the fermentation process, greatly improves fermentation quality and uniformity.

Claims

1. An integrated oxygen-controlled fermentation box for black tea, comprising a fermentation box (1), characterized in that: The fermentation box (1) is equipped with a sealed door (2) and an electrical control system (3). The outside of the fermentation box (1) is equipped with an air supply device (4), an air exchange device (7), a humidification device (8), and pipelines. The fermentation box (1) is equipped with multiple sets of sensors (15), multiple sets of material carrying structures (16), and an air flow structure (17). The gas supply device (4) is provided with a first air pipe (5) and a second air pipe (6) that are connected to the space inside the fermentation box (1).

2. The integrated oxygen-controlled fermentation box for black tea according to claim 1, characterized in that: The ventilation device (7) is provided with a V-shaped exhaust port (14) at the bottom.

3. The integrated oxygen-controlled fermentation box for black tea according to claim 1, characterized in that: The pipeline includes an air supply pipe (9) connected to a humidification device (8) at one end, and the other end of the air supply pipe (9) extends into the fermentation box (1) and is connected to a gas distribution pipe (10). The gas distribution pipe (10) is symmetrically provided with gas dispersing pipes (11) at both ends. The gas dispersing pipes (11) are fixedly connected to the inner wall of the fermentation box (1) through a fixing seat (12). The gas dispersing pipes (11) are provided with multiple gas dispersing holes (13).

4. The integrated oxygen-controlled fermentation box for black tea according to claim 1, characterized in that: The multiple sets of sensors (15) include a temperature sensor, a humidity sensor, an oxygen concentration sensor, and a nitrogen concentration sensor.

5. The integrated oxygen-controlled fermentation box for black tea according to claim 1, characterized in that: The material-carrying structure (16) includes multiple sets of trays (18) fixedly connected to the inner wall of the fermentation box (1). Multiple sets of limiting grooves (19) are provided on the trays (18), and a storage basket (20) is provided in the limiting grooves (19) for sliding cooperation with them.

6. The integrated oxygen-controlled fermentation box for black tea according to claim 5, characterized in that: The storage basket (20) is provided with multiple sets of evenly distributed first ventilation holes (21) and second ventilation holes (22) on its side wall and bottom.

7. The integrated oxygen-controlled fermentation box for black tea according to claim 1, characterized in that: The airflow structure (17) includes a blower (23) located at the bottom of the space inside the fermentation chamber (1). Two air ducts (24) are symmetrically arranged on the blower (23). Air outlets (25) are symmetrically arranged on the air ducts (24). Multiple sets of symmetrically arranged first air outlets (26) are provided on the two air outlets (25) of one side of the air duct (24). Multiple sets of second air outlets (27) are provided at the middle axis of symmetry of the two air outlets (25) of the other side of the air duct (24).

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