Tobacco stem fermentation equipment

Abstract

The utility model relates to tobacco stem fermentation equipment. Comprising a fermentation container, a gas pressurization device and a solid-liquid separation device. A pH detection unit, a pressure detection unit and a fermentation switch are arranged in the fermentation container, and the pressure detection unit is electrically connected to the fermentation switch; the gas pressurization device is communicated with the fermentation container, is electrically connected to the pH detection unit and is used for starting pressurization when the pH detection unit detects that the pH reaches the lowest point and starts to rise; the solid-liquid separation device is communicated with the fermentation container through the fermentation switch unit, and the pressure detection unit is used for controlling the fermentation switch to be turned on when detecting that the pressure in the fermentation container reaches a preset value, so that a fermentation mixture in the fermentation container enters the solid-liquid separation device to separate fermentation liquid. The tobacco stem fermentation equipment automatically judges the completion of fermentation to realize solid-liquid separation, is high in automation degree, and does not need manual separation of fermentation liquor.

Description

tobacco stem fermentation equipment Technical Field

[0001] This application relates to the field of tobacco stem technology, and in particular to a tobacco stem fermentation device. Background Technology

[0002] In the tobacco processing industry, tobacco stems account for about 25%-30% of the leaf weight. my country produces hundreds of thousands of tons of tobacco stems every year. In the past, the large amount of tobacco stems discarded caused environmental pollution and resource waste. Although processing tobacco stems into shreds for use in cigarettes has many advantages, the burning of shreds has sensory defects such as a strong woody smell, strong irritation, and obvious burning sensation. This is because tobacco stems have a high content of cell wall substances, which produce harmful components when burned.

[0003] To improve the sensory quality and utilization rate of tobacco stems, early attempts in the industry to add flavorings and additives had limited success. In recent years, bio-fermentation degradation has become a hot topic, with enzyme-based degradation methods being widely used. However, these methods have shortcomings in obtaining the fermentation broth and the tobacco stem fermentation process: First, obtaining the fermentation broth is cumbersome, requiring close manual monitoring to determine the fermentation completion time. Second, the automation level of tobacco stem fermentation equipment is low, necessitating manual separation of the fermentation broth.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0005] Therefore, it is necessary to address two issues: firstly, the process of obtaining fermentation broth is cumbersome, requiring close manual monitoring of the cultivation process to determine the fermentation completion time; secondly, tobacco stem fermentation equipment has a low degree of automation, requiring manual measurement, transportation, and pouring of fermentation broth, which leads to labor fatigue and inaccurate operation. This paper proposes a tobacco stem fermentation device.

[0006] A tobacco stem fermentation device, comprising:

[0007] A fermentation container, wherein the fermentation container is equipped with a pH detection unit and a pressure detection unit, and a fermentation switch is provided, wherein the pressure detection unit is electrically connected to the fermentation switch;

[0008] A gas pressurizing device is connected to the fermentation vessel and electrically connected to the pH detection unit. The gas pressurizing device is used to start pressurization when the pH detection unit detects that the pH has reached its lowest point and has begun to rise.

[0009] A solid-liquid separation device is provided, which is connected to the fermentation container via the fermentation switch unit. The pressure detection unit is used to control the fermentation switch to open when the pressure inside the fermentation container reaches a preset value, so that the fermentation mixture inside the fermentation container enters the solid-liquid separation device to separate the fermentation liquid.

[0010] In one embodiment, the fermentation vessel is further provided with a stirrer for stirring the fermentation mixture within the fermentation vessel.

[0011] In one embodiment, the tobacco stem fermentation equipment further includes a fermentation liquid storage container. The fermentation liquid storage container is provided with a storage cavity, a cooling cavity, and a cooling inlet and a cooling outlet communicating with the cooling cavity. The cooling cavity is located outside the storage cavity and is connected to the solid-liquid separation device. The cooling inlet is used to introduce a cooling medium, and the cooling outlet is used to discharge the cooling medium.

[0012] In one embodiment, the fermentation broth temporary storage container is provided with a temperature detection unit, which is located in the temporary storage cavity and is used to detect the temperature of the fermentation broth in the temporary storage cavity.

[0013] In one embodiment, the fermentation liquid storage container is further provided with a fermentation liquid storage switch, and the tobacco stem fermentation equipment further includes a quantitative feeding container. The quantitative feeding container is connected to the fermentation liquid storage container through the fermentation liquid storage switch. The quantitative feeding container is provided with a first flow detection unit, which is electrically connected to the fermentation liquid storage switch. The first flow detection unit is used to detect the flow rate in the quantitative feeding container.

[0014] In one embodiment, the fermentation broth storage container is provided with a reflux inlet, the metering feed container is provided with a reflux outlet, and the tobacco stem fermentation equipment further includes a circulation pump. The inlet of the circulation pump is connected to the reflux outlet, and the outlet of the circulation pump is connected to the reflux inlet. The circulation pump is used to pump the fermentation broth in the metering feed container to the fermentation broth storage container.

[0015] In one embodiment, the metering container is further provided with a metering switch, and the tobacco stem fermentation equipment further includes a fermentation liquid feeding device. The fermentation liquid feeding device is connected to the metering container through the metering switch. The fermentation liquid feeding device is provided with a second flow detection unit, which is electrically connected to the metering switch. The second flow detection unit is used to detect the flow rate of the fermentation liquid feeding device.

[0016] In one embodiment, the fermentation broth feeding device includes:

[0017] Support frame;

[0018] A roller assembly includes a roller body, a guide, and a spraying component. The roller body is rotatably connected to a support frame at both ends along its own axis. The roller body has a receiving cavity and an inlet and an outlet communicating with the receiving cavity. The inlet and outlet are located at opposite ends of the roller body. The guide is located within the receiving cavity and divides the receiving cavity to form a conveying channel connecting the inlet and outlet. The guide is used to place tobacco stems and, with the rotation of the roller body, conveys the tobacco stems along the conveying channel from the inlet to the outlet. The spraying component has a liquid inlet and an outlet. The liquid inlet is connected to a metering switch, and the liquid outlet is connected to the receiving cavity.

[0019] A rotary actuator, the main body of which is mounted on the support frame, and the output end of which is driven to be connected to the main body of the roller to drive the main body of the roller to rotate around its own axis.

[0020] In one embodiment, the tobacco stem fermentation equipment further includes a fermentation bed for fermenting tobacco stems soaked in the fermentation liquid.

[0021] In one embodiment, the pH detection unit is a pH meter, and / or the pressure detection unit is a pressure sensor, and / or the fermentation switch is a pneumatic solenoid valve, and / or the gas pressurization device is an air compressor, and / or the solid-liquid separation device is a plate and frame filter press.

[0022] In the aforementioned tobacco stem fermentation equipment, when the pH detection unit detects that the pH inside the fermentation container has reached its lowest point and begins to rise, the gas pressurization device pressurizes the inside of the fermentation container until the pressure detection unit detects that the pressure inside the fermentation container has reached a preset pressure value. At this point, the fermentation switch of the fermentation container is opened, allowing the fermentation mixture inside the container to enter the solid-liquid separation device. The solid-liquid separation device can separate the solids, such as Ganoderma lucidum, from the fermentation liquid containing laccase, thus obtaining the fermentation liquid. Therefore, the tobacco stem fermentation equipment of this application, by setting a pH detection unit, can detect the time point when the Ganoderma lucidum fermentation is complete, eliminating the need for manual judgment of the fermentation completion time and close manual monitoring. Through the gas pressurization device, pressure detection unit, fermentation switch, and solid-liquid separation device, the fermentation liquid can be automatically separated, eliminating the need for manual separation, improving the degree of automation, and increasing the efficiency of tobacco stem fermentation liquid preparation. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the disclosed drawings without creative effort.

[0024] Figure 1 is a schematic diagram of a tobacco stem fermentation device provided in an embodiment of this application.

[0025] Explanation of reference numerals in the attached drawings: 100, tobacco stem fermentation equipment; 1, fermentation container; 11, pH detection unit; 12, fermentation switch; 13, stirrer; 2, gas pressurization device; 3, solid-liquid separation device; 4, fermentation liquid temporary storage container; 41, temperature detection unit; 42, fermentation liquid temporary storage switch; 5, quantitative feeding container; 51, first flow detection unit; 52, quantitative feeding switch; 6, fermentation liquid feeding device; 61, second flow detection unit; 7, fermentation bed; 8, circulating chiller. Detailed Implementation

[0026] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0027] Please refer to Figure 1. This application provides a tobacco stem fermentation device 100, which includes a fermentation container 1, a gas pressurization device 2, a solid-liquid separation device 3, a fermentation liquid temporary storage container 4, a quantitative feeding container 5, a fermentation liquid feeding device 6, and a fermentation bed 7.

[0028] Please refer to Figure 1. In some embodiments, the fermentation container 1 is equipped with a pH detection unit 11 and a pressure detection unit (not shown in Figure 1), and a fermentation switch 12. The pressure detection unit is electrically connected to the fermentation switch 12. The gas pressurization device 2 is connected to the fermentation container 1 and is electrically connected to the pH detection unit 11. It is used to start pressurization when the pH detection unit 11 detects that the pH has reached the lowest point and then begins to rise. The solid-liquid separation device 3 is connected to the fermentation container 1 through the fermentation switch 12 unit. The pressure detection unit is used to control the fermentation switch 12 to open when it detects that the pressure inside the fermentation container 1 has reached a preset value, so that the fermentation mixture in the fermentation container 1 enters the solid-liquid separation device 3 to separate the fermentation liquid.

[0029] Please refer to Figure 1. Fermentation container 1 is used for the growth of Ganoderma lucidum mycelium. The Ganoderma lucidum mycelium ferments to produce laccase, resulting in a laccase-containing tobacco stem fermentation broth. During the growth and reproduction stage of the Ganoderma lucidum mycelium, the pH of the fermentation broth initially remains stable, then gradually decreases to a minimum point before rising again. The stable pH stage corresponds to the growth and reproduction stage of the Ganoderma lucidum mycelium, while the gradually decreasing pH stage corresponds to the rapid laccase production stage. During the enzyme production stage, the Ganoderma lucidum mycelium consumes carbon and nitrogen sources, and the hydrogen ions produced by its metabolism are released into fermentation container 1, causing the pH of the fermentation broth to decrease. During the pH decrease, laccase activity continuously increases. When the pH reaches its minimum point, laccase activity is essentially at its maximum, and the Ganoderma lucidum mycelium ceases to produce laccase. Subsequently, the pH gradually increases, and the laccase activity remains unchanged or decreases slightly. That is, when the pH in fermentation container 1 decreases to its minimum point and then begins to rise, it is essentially the time point with the highest laccase production and activity, marking the completion of Ganoderma lucidum fermentation and serving as the time signal for separating the fermentation broth. Based on this, when the pH detection unit 11 detects that the pH inside the fermentation container 1 has reached its lowest point and begins to rise, the gas pressurization device 2 pressurizes the inside of the fermentation container 1 until the pressure detection unit inside the fermentation container 1 detects that the pressure inside the fermentation container 1 has reached a preset pressure value. Then, the fermentation switch 12 of the fermentation container 1 is opened, allowing the fermentation mixture inside the fermentation container 1 to enter the solid-liquid separation device 3. The solid-liquid separation device 3 can achieve solid-liquid separation, thereby separating the solids such as Ganoderma lucidum and the fermentation liquid containing laccase, thus obtaining the fermentation liquid. Therefore, the tobacco stem fermentation equipment 100 of this application, by setting the pH detection unit 11, can detect the time point when the Ganoderma lucidum fermentation is completed, eliminating the need for manual judgment of the fermentation completion time and close manual monitoring. Through the gas pressurization device 2, pressure detection unit, fermentation switch 12, and solid-liquid separation device 3, the fermentation liquid can be automatically separated, eliminating the need for manual separation of the fermentation liquid, improving the degree of automation and the preparation efficiency of tobacco stem fermentation liquid.

[0030] Please refer to Figure 1. In an optional embodiment, the fermentation container 1 may be a fermentation tank or a fermentation vessel. The specific form of the fermentation container 1 is not limited in the embodiments of this application.

[0031] Please refer to Figure 1. In an optional embodiment, the pH detection unit 11 may be a pH sensor or an acid-base detector.

[0032] In optional implementations, the pressure detection unit may be a piezoresistive pressure sensor, a capacitive pressure sensor, a piezoelectric pressure sensor, etc.

[0033] Please refer to Figure 1. In an optional embodiment, the fermentation switch 12 can be a pneumatic solenoid valve, a pneumatic diaphragm valve, etc.

[0034] Referring to Figure 1, in optional embodiments, to make the fermentation broth in the fermentation container 1 more uniformly mixed, in some embodiments, the fermentation container 1 is also provided with a stirrer 13, which is used to stir the fermentation mixture in the fermentation container 1. The stirrer 13 includes a stirring rotary motor and a stirring head. The stirring head extends into the cavity of the fermentation container 1. The main body of the stirring rotary motor is connected to the fermentation container 1, and the output end of the stirring rotary motor is connected to the stirring head to drive the stirring head to rotate.

[0035] Please refer to Figure 1. In an optional embodiment, the gas pressurizing device 2 can be an air compressor, air pump, etc. The gas pressurizing device 2 pressurizes the fermentation container 1 to 0.1MPa to 0.2MPa, the fermentation switch 12 is turned on, and the fermentation mixture is transported to the solid-liquid separation device 3 under the action of air pressure.

[0036] Referring to Figure 1, in an optional embodiment, the solid-liquid separation device 3 can be a plate and frame filter press, a belt filter press, etc. After the fermentation mixture is filtered through the solid-liquid separation device 3, insoluble solids are removed, and the fermentation broth containing active substances such as laccase is retained. When the solid-liquid separation device 3 is a plate and frame filter press, the filter cloth pore size of the plate and frame filter press can be 50 mesh to 300 mesh.

[0037] Referring to Figure 1, in some embodiments, the tobacco stem fermentation device 100 further includes a fermentation broth temporary storage container 4. The fermentation broth temporary storage container 4 is provided with a temporary storage cavity, a cooling cavity, and a cooling inlet and a cooling outlet communicating with the cooling cavity. The cooling cavity is located outside the temporary storage cavity and is connected to the solid-liquid separation device 3. The cooling inlet is used to introduce a cooling medium, and the cooling outlet is used to discharge the cooling medium. The fermentation broth temporary storage container 4 can store the fermentation broth. Since the fermentation broth temporary storage container 4 is provided with a cooling cavity, cooling water can be introduced into the cooling inlet. The cooling water circulates and cools the temporary storage cavity before exiting from the cooling outlet. The cooling water can be 4℃~12℃, which allows the fermentation broth to be stored at 4℃~12℃ to maintain enzyme activity and allows the fermentation broth to be stored for 1 to 5 days.

[0038] Please refer to Figure 1. In an optional embodiment, the fermentation broth temporary storage container 4 can be a tank or a vessel.

[0039] Please refer to Figure 1. In an optional embodiment, the cooling inlet and cooling outlet can be connected to the circulating chiller 8 or to a cooling water pipe.

[0040] Referring to Figure 1, in some embodiments, the fermentation broth storage container 4 is equipped with a temperature detection unit 41, which is located inside the storage cavity. The temperature detection unit 41 is used to detect the temperature of the fermentation broth inside the storage cavity. The temperature detection unit 41 facilitates the control of the temperature in the fermentation broth storage container 4, thereby maintaining the enzyme activity of the fermentation broth.

[0041] Please refer to Figure 1. In an optional embodiment, the temperature detection unit 41 may be a resistance temperature sensor, a semiconductor temperature sensor, etc.

[0042] Referring to Figure 1, in some embodiments, the fermentation liquid storage container 4 is further provided with a fermentation liquid storage switch 42. The tobacco stem fermentation device 100 also includes a quantitative feeding container 5, which is connected to the fermentation liquid storage container 4 via the fermentation liquid storage switch 42. The quantitative feeding container 5 is provided with a first flow detection unit 51, which is electrically connected to the fermentation liquid storage switch 42. The first flow detection unit 51 is used to detect the flow rate in the quantitative feeding container 5. The quantitative feeding container 5 is set up to store a quantitative amount of fermentation liquid for soaking tobacco stems, which facilitates control of the amount of fermentation liquid applied. The first flow detection unit 51 can detect the flow rate of the fermentation liquid in the quantitative feeding container 5. When the flow rate of the fermentation liquid in the quantitative feeding container 5 does not reach the preset flow rate value of the first flow detection unit 51, the first flow detection unit 51 causes the fermentation liquid storage switch 42 to open, connecting the fermentation liquid storage container 4 and the quantitative feeding container 5, and the fermentation liquid in the fermentation liquid storage container 4 enters the quantitative feeding container 5. When the flow rate of the fermentation liquid in the quantitative feeding container 5 reaches the preset flow rate value of the first flow detection unit 51, the first flow detection unit 51 closes the fermentation liquid temporary storage switch 42, the fermentation liquid temporary storage container 4 is not connected to the quantitative feeding container 5, and the fermentation liquid in the fermentation liquid temporary storage container 4 stops entering the quantitative feeding container 5.

[0043] Please refer to Figure 1. In an optional embodiment, the metering container 5 can be a tank or a trough.

[0044] Please refer to Figure 1. In an optional embodiment, the first flow detection unit 51 may be a mechanical flow meter or an electromagnetic flow meter, etc.

[0045] Please refer to Figure 1. In an optional embodiment, the fermentation broth temporary storage switch 42 may be a pneumatic solenoid valve or a pneumatic diaphragm valve, etc.

[0046] Referring to Figure 1, in some embodiments, the fermentation broth storage container 4 is provided with a reflux inlet, the metering container 5 is provided with a reflux outlet, and the tobacco stem fermentation equipment 100 also includes a circulation pump. The inlet of the circulation pump is connected to the reflux outlet, and the outlet of the circulation pump is connected to the reflux inlet. The circulation pump is used to pump the fermentation broth in the metering container 5 to the fermentation broth storage container 4. By setting up a reflux inlet, a reflux outlet, and a circulation pump, excess fermentation broth in the metering container 5 can be pumped to the fermentation broth storage container 4 for storage, realizing the recycling and reuse of the fermentation broth.

[0047] Please refer to Figure 1. In an optional embodiment, the circulation pump may be a centrifugal circulation pump or a positive displacement circulation pump, etc.

[0048] Referring to Figure 1, in some embodiments, the metering container 5 is further equipped with a metering switch 52, and the tobacco stem fermentation equipment 100 also includes a fermentation liquid feeding device 6. The fermentation liquid feeding device 6 is connected to the metering container 5 through the metering switch 52. The fermentation liquid feeding device 6 is equipped with a second flow detection unit 61, which is electrically connected to the metering switch 52. The second flow detection unit 61 is used to detect the flow rate of the fermentation liquid feeding device 6. The fermentation liquid feeding device 6 is set up to realize the feeding of fermentation liquid, and the fermentation liquid feeding device 6 pours a metered amount of fermentation liquid onto the tobacco stems. When the second flow detection unit 61 detects that the flow rate of the fermentation liquid feeding device 6 has not reached the preset flow rate value, the second flow detection unit 61 turns on the metering switch 52, so that the metering switch 52 is connected to the metering container 5, and the metering container 5 adds fermentation liquid to the fermentation liquid feeding device 6. When the second flow detection unit 61 detects that the flow rate of the fermentation broth feeding device 6 reaches the preset flow rate value, the second flow detection unit 61 closes the quantitative feeding switch 52, and the quantitative feeding container 5 stops adding fermentation broth to the fermentation broth feeding device 6.

[0049] Please refer to Figure 1. In an optional embodiment, the second flow detection unit 61 may be a mechanical flow meter or an electromagnetic flow meter, etc.

[0050] Please refer to Figure 1. In an optional embodiment, the metering switch 52 may be a pneumatic solenoid valve or a pneumatic diaphragm valve, etc.

[0051] Referring to Figure 1, it can be understood that the preset flow rate value of the second flow detection unit 61 is less than or equal to the preset flow rate value of the first flow detection unit 51. In other words, the flow rate of the fermentation liquid in the fermentation liquid feeding device 6 is less than or equal to the flow rate of the fermentation liquid in the quantitative feeding container 5.

[0052] Referring to Figure 1, in some embodiments, the fermentation apparatus includes a support frame, a roller assembly, and a rotary drive. The roller assembly includes a roller body, guide members, and a spraying member. The roller body is rotatably connected to the support frame at both ends along its own axis. The roller has a receiving cavity and an inlet and an outlet communicating with the receiving cavity. The inlet and outlet are located at opposite ends of the roller body. The guide members are located within the receiving cavity and divide the cavity to form a conveying channel connecting the inlet and outlet. The guide members are used to place tobacco stems and, with the rotation of the roller body, convey the tobacco stems along the conveying channel from the inlet to the outlet. The spraying member has a liquid inlet and a liquid outlet. The liquid inlet is connected to a quantitative feeding switch 52, and the liquid outlet is connected to the receiving cavity. The main body of the rotary drive is mounted on the support frame, and the output end of the rotary drive is connected to the roller body to drive the roller body to rotate around its own axis. Understandably, the tobacco stems are fed into the guide from the inlet, and the rotary drive is activated. The rotary drive drives the drum body to rotate, and the tobacco stems move from the inlet to the outlet along the conveying channel formed by the guide. Simultaneously, the quantitative feeding switch 52 is activated, and the quantitative feeding container 5 delivers fermentation liquid into the inlet of the spraying element. The fermentation liquid exits from the outlet of the spraying element and is sprayed onto the tobacco stems inside the drum body. This drum feeding device ensures that the fermentation liquid and tobacco stems are in full contact during the rotation of the drum body, facilitating tobacco stem fermentation.

[0053] Please refer to Figure 1. In an optional embodiment, the rotary drive may be a rotary motor or a rotary cylinder, etc.

[0054] Referring to Figure 1, in some embodiments, the tobacco stem fermentation device 100 further includes a fermentation bed 7, which is used to ferment the tobacco stems soaked in fermentation liquid. After soaking, the tobacco stems pass through the discharge port of the drum body and directly enter the fermentation bed 7 for fermentation.

[0055] Please refer to Figure 1. It should be noted that the tobacco stem fermentation equipment 100 in this embodiment of the application is controlled by a PLC automatic control system, which can realize the fully automated production of fermentation liquid by Ganoderma lucidum, filtration of fermentation mixture, storage of fermentation liquid, diversion of fermentation liquid, spraying of fermentation liquid and fermentation of tobacco stems, without the need for manual operation, thus improving work efficiency.

[0056] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0057] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0058] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0059] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0060] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0061] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0062] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A tobacco stem fermentation device, characterized in that, include: A fermentation container, wherein the fermentation container is equipped with a pH detection unit and a pressure detection unit, and a fermentation switch is provided, wherein the pressure detection unit is electrically connected to the fermentation switch; A gas pressurizing device is connected to the fermentation vessel and electrically connected to the pH detection unit. The gas pressurizing device is used to start pressurization when the pH detection unit detects that the pH has reached its lowest point and has begun to rise. A solid-liquid separation device is provided, which is connected to the fermentation container via the fermentation switch unit. The pressure detection unit is used to control the fermentation switch to open when the pressure inside the fermentation container reaches a preset value, so that the fermentation mixture inside the fermentation container enters the solid-liquid separation device to separate the fermentation liquid.

2. The tobacco stem fermentation equipment according to claim 1, characterized in that, The fermentation vessel is also equipped with a stirrer, which is used to stir the fermentation mixture inside the fermentation vessel.

3. The tobacco stem fermentation equipment according to claim 1, characterized in that, The tobacco stem fermentation equipment also includes a fermentation liquid temporary storage container. The fermentation liquid temporary storage container is provided with a temporary storage cavity, a cooling cavity, and a cooling inlet and a cooling outlet connected to the cooling cavity. The cooling cavity is located outside the temporary storage cavity and is connected to the solid-liquid separation device. The cooling inlet is used to introduce a cooling medium, and the cooling outlet is used to discharge the cooling medium.

4. The tobacco stem fermentation equipment according to claim 3, characterized in that, The fermentation broth temporary storage container is equipped with a temperature detection unit, which is located inside the temporary storage cavity and is used to detect the temperature of the fermentation broth inside the temporary storage cavity.

5. The tobacco stem fermentation equipment according to claim 3, characterized in that, The fermentation liquid storage container is also equipped with a fermentation liquid storage switch. The tobacco stem fermentation equipment also includes a quantitative feeding container. The quantitative feeding container is connected to the fermentation liquid storage container through the fermentation liquid storage switch. The quantitative feeding container is equipped with a first flow detection unit. The first flow detection unit is electrically connected to the fermentation liquid storage switch. The first flow detection unit is used to detect the flow rate in the quantitative feeding container.

6. The tobacco stem fermentation equipment according to claim 5, characterized in that, The fermentation broth temporary storage container is provided with a reflux inlet, the quantitative feeding container is provided with a reflux outlet, and the tobacco stem fermentation equipment also includes a circulation pump. The inlet of the circulation pump is connected to the reflux outlet, and the outlet of the circulation pump is connected to the reflux inlet. The circulation pump is used to pump the fermentation broth in the quantitative feeding container to the fermentation broth temporary storage container.

7. The tobacco stem fermentation equipment according to claim 5, characterized in that, The quantitative feeding container is also equipped with a quantitative feeding switch. The tobacco stem fermentation equipment also includes a fermentation liquid feeding device. The fermentation liquid feeding device is connected to the quantitative feeding container through the quantitative feeding switch. The fermentation liquid feeding device is equipped with a second flow detection unit. The second flow detection unit is electrically connected to the quantitative feeding switch. The second flow detection unit is used to detect the flow rate of the fermentation liquid feeding device.

8. The tobacco stem fermentation equipment according to claim 7, characterized in that, The fermentation broth feeding device includes: a support frame; a roller assembly, the roller assembly including a roller body, a guide, and a spraying component, the roller body being rotatably connected to the support frame at both ends along its own axis, the roller body having a receiving cavity and an inlet and an outlet communicating with the receiving cavity, the inlet and the outlet being respectively located at both ends of the roller body, the guide being located in the receiving cavity and dividing the receiving cavity to form a conveying channel communicating with the inlet and the outlet, the guide being used to place tobacco stems and, with the rotation of the roller body, conveying the tobacco stems along the conveying channel from the inlet to the outlet, the spraying component having a liquid inlet and a liquid outlet, the liquid inlet communicating with the quantitative feeding switch, and the liquid outlet communicating with the receiving cavity; and a rotary driver, the main body of the rotary driver being located on the support frame, the output end of the rotary driver being driven connected to the roller body to drive the roller body to rotate around its own axis.

9. The tobacco stem fermentation apparatus according to any one of claims 1 to 8, characterized in that, The tobacco stem fermentation equipment also includes a fermentation bed, which is used to ferment tobacco stems that have been soaked in the fermentation liquid.

10. The tobacco stem fermentation apparatus according to any one of claims 1 to 8, characterized in that, The pH detection unit is a pH meter, and / or the pressure detection unit is a pressure sensor, and / or the fermentation switch is a pneumatic solenoid valve, and / or the gas pressurization device is an air compressor, and / or the solid-liquid separation device is a plate and frame filter press.

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