An anaerobic fermentation tank for a fig-based fermented plant beverage

Abstract

This invention relates to the field of fermentation equipment technology and provides an anaerobic fermentation tank for fig fermentation plant beverages. The tank includes a tank body, a sealing cap, a feeding mechanism, a pectin layer breaking and anti-deposition stratified stirring mechanism, a discharging mechanism, a temperature control mechanism, an intelligent monitoring mechanism, a controller, and a flange-integrated annular self-regulating constant pressure water seal assembly. The top support flange of the tank body has a plug groove and pin hole, and the sealing cap has a plug pipe and a positioning pin forming a nested positioning fit. The flange-integrated annular self-regulating constant pressure water seal assembly has a vent pipe connecting the tank body and the annular water seal groove, and a built-in float valve for automatic water replenishment. The pressure regulating component is adapted to fermentation pressure control. The stirring mechanism stratifies the pectin layer and material deposition, and the temperature control and monitoring mechanisms work together to achieve precise control of fermentation parameters. This invention optimizes the sealing positioning and water seal gas guiding structure, improves the stability of anaerobic fermentation and the continuity of equipment operation, and is suitable for fig fermentation production needs.

Description

Technical Field

[0001] This invention belongs to the field of fermentation equipment technology, and in particular relates to an anaerobic fermentation tank for fig fermentation plant beverage. Background Technology

[0002] Figs are rich in nutrients such as pectin, active enzymes, polysaccharides, and vitamins. Plant-based beverages made from figs through anaerobic fermentation combine flavor and nutrition, representing an important direction for the deep processing of fruits and vegetables. As a core production piece, the anaerobic fermentation tank's structural adaptability directly determines the fermentation effect and product quality. Currently, most anaerobic fermentation tanks used for fig fermentation are general-purpose fruit and vegetable fermentation equipment. Their sealing structures employ conventional flange fastening, the water seal components are simple top water seals, the stirring mechanisms use conventional propeller designs, and the temperature control and monitoring systems are standardized configurations. They lack specific structural optimization for the physicochemical properties of fig pulp, such as its tendency to produce pectin and deposit, and the component matching and functional control do not meet the process requirements of fig anaerobic fermentation.

[0003] The existing anaerobic fermentation tank for fig fermentation has obvious structural defects. The sealing cover (2) and the tank body (1) are only connected by a simple snap-fit, without a dedicated positioning structure. Long-term operation is prone to misalignment and gaps, making it difficult to maintain a stable anaerobic fermentation environment. The water seal component does not have a dedicated gas guiding structure and an automatic water replenishment structure. The water level is prone to fluctuation with the evaporation and fermentation process, and the water seal effect is difficult to guarantee continuously. At the same time, the pressure control component is directly connected to the inside and outside of the tank, which is easy to damage the anaerobic environment. The response is lagging and cannot be adjusted in real time according to the pressure inside the tank. The stirring mechanism is not designed for the pectin layer on the liquid surface and the pulp deposition at the bottom of the tank produced by fig fermentation. It cannot effectively break through the pectin layer barrier. The material at the bottom of the tank is prone to clump and deposit, resulting in uneven fermentation of the material. The stability of continuous operation of the equipment and the quality of the finished product are greatly affected, making it difficult to meet the needs of large-scale production.

[0004] Therefore, an anaerobic fermentation tank for fig fermentation plant beverages is needed to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide an anaerobic fermentation tank for fig fermentation plant beverages to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An anaerobic fermentation tank for fig fermentation plant beverage includes a tank body, a sealing cap, a feeding mechanism, a pectin layer breaking and anti-deposition stratification stirring mechanism, a discharging mechanism, a temperature control mechanism, an intelligent monitoring mechanism, a controller, and a flange-integrated annular self-regulating constant pressure water seal assembly. The top support flange of the tank body has an annular insertion groove and evenly distributed pin holes. The annular insertion pipe at the bottom of the sealing cap forms a nested insertion fit with the insertion groove, and the positioning pin and pin holes form a circumferential positioning fit, structurally preventing misalignment between the sealing cap and the tank body and ensuring a tight seal. The flange-integrated annular self-regulating constant pressure water seal assembly is fixed to the upper surface of the tank body support flange. A vent pipe connects the tank body and the annular water seal groove to achieve stable airflow, and the water seal assembly... The system achieves anaerobic sealing and adaptive pressure control of the tank. A pectin layer breaking and anti-deposition stratified stirring mechanism extends through the middle of the sealing cover into the tank, using a stratified structure to specifically address the pectin layer and deposition issues during fig fermentation. A feeding mechanism passes through the sealing cover to complete aseptic feeding, and a discharging mechanism is located at the bottom of the tank to discharge the fermentation liquid. A temperature control mechanism covers the side wall of the tank to achieve uniform temperature control, and an intelligent monitoring mechanism collects key fermentation parameters in real time. A controller is fixed to the outer wall of the tank and connects to the control of each actuator and the signal of each monitoring component to achieve fully automated and coordinated control. This overall structural layout fits the fig fermentation process, with each component having a clear division of labor and working together to create a stable anaerobic fermentation environment.

[0008] A further technical solution is that the flange-integrated annular self-regulating constant pressure water seal assembly includes an annular water seal groove, an annular floating bell, an automatic water replenishment assembly, a pressure regulating assembly, and several vent pipes; the annular water seal groove is fixed to the upper surface of the tank support flange and is arranged coaxially with the tank to ensure uniform force distribution; the annular floating bell is movably fitted inside the annular water seal groove and forms a sealed barrier with the water seal liquid by its own weight; the automatic water replenishment assembly continuously replenishes the water seal liquid to the annular water seal groove to avoid water level fluctuations affecting the sealing effect; the pressure regulating assembly is connected to the inner cavity of the annular floating bell and operates in real time according to the pressure inside the tank to maintain the pressure inside the tank within a suitable fermentation range. This structure integrates the water seal component into the flange, replacing traditional rubber seals and eliminating the risk of leakage caused by seal aging. It also integrates water sealing and pressure regulation functions, eliminating the need for additional sealing structures, simplifying the top layout of the tank, improving the synergy between sealing and pressure regulation, and adapting to the continuous sealing requirements of anaerobic fermentation. The vent pipe is fixedly connected to the bottom of the annular water seal groove, and the bottom of several vent pipes are connected to the tank. Gas inside the tank can be stably transported to the annular water seal groove through the vent pipe, ensuring the stability of the water seal operation.

[0009] A further technical solution involves an automatic water replenishment component comprising a water storage box, a water replenishment pipe, and a float valve. The water storage box is fixed to the outer wall of the tank, providing storage space for the water seal liquid. The water replenishment pipe connects the water storage box to the annular water seal trough, forming a stable water replenishment channel. The float valve automatically opens and closes the water replenishment channel according to the water level in the annular water seal trough. When the water level drops, the float valve opens to replenish water; when the water level reaches the target level, it automatically closes. No manual operation is required throughout the process. This automatic water replenishment structure maintains a constant water seal liquid level, preventing seal failure due to insufficient water level. It also reduces the frequency of manual maintenance, improves the operational continuity of the water seal component, ensures the stability of the anaerobic fermentation environment, and meets the process requirements of long-cycle fig fermentation.

[0010] A further technical solution involves a pressure regulating component comprising a counterweight, a pressure relief valve, and a vacuum breaker valve. The counterweight is detachably placed on top of the annular floating bell, allowing adjustment of the downward pressure of the bell according to the fermentation process to meet the pressure requirements of different fermentation stages. The pressure relief valve and the vacuum breaker valve are connected to the inner cavity of the annular floating bell and automatically activate when the pressure inside the tank is too high or too low, achieving bidirectional pressure regulation. This pressure regulating structure adaptively adjusts the pressure inside the tank according to the gas production pattern of fig fermentation, preventing excessive pressure from opening the water seal or excessive pressure from creating negative pressure and drawing in air. This ensures a stable anaerobic environment through pressure regulation, while the flexibly adjustable counterweight enhances the equipment's adaptability to different fermentation processes.

[0011] A further technical solution involves a pectin layer breaking-anti-settling stratified stirring mechanism comprising a drive motor, a stirring shaft, an upper liftable pectin layer breaking paddle, a middle guiding stirring paddle, and a lower anti-settling scraper. The drive motor is fixed to the center of the top of the sealed cover, providing stable power for stirring. The stirring shaft is coaxially connected to the output end of the drive motor to ensure smooth stirring rotation. The three stirring components are sequentially arranged around the stirring shaft, respectively addressing the pectin layer on the liquid surface, the material in the middle, and the sediment at the bottom of the tank for targeted operations. This stratified stirring structure is customized for the fermentation characteristics of figs, differing from conventional single stirring paddles. It can simultaneously solve three major problems: pectin layer obstruction, poor material circulation, and sediment at the bottom of the tank, improving the uniformity of material fermentation, avoiding localized fermentation abnormalities that affect the quality of the finished product, and enhancing the continuity of equipment operation.

[0012] A further technical solution involves an upper, liftable pectin layer breaking paddle comprising a lifting sleeve, several serrated breaking blades, and a height adjustment component. The lifting sleeve is movably fitted onto the upper part of the stirring shaft, allowing for axial height adjustment. The serrated breaking blades are evenly distributed around the lifting sleeve, and during rotation, the serrated structure efficiently breaks down the pectin layer on the liquid surface. The height adjustment component ensures a fixed height for the lifting sleeve, adapting to pectin layer breaking operations at different liquid levels. This liftable structure allows for real-time adjustment of the breaking blade height according to changes in the liquid level during fermentation, maintaining effective contact with the pectin layer, improving the pectin layer breaking effect, eliminating the barrier effect of the pectin layer on fermentation, and ensuring full contact and reaction between the upper material and the inoculum.

[0013] A further technical solution involves the lower anti-settling scraper's bottom end fitting against the inner wall of the tank's inner cavity, rotating synchronously with the stirring shaft to scrape away deposited material at the bottom of the tank. The middle-layer guiding stirring paddle is fixed in the middle of the stirring shaft, driving the material to circulate up and down during rotation. The middle-layer guiding stirring paddle and the lower anti-settling scraper work together, enabling full-area material circulation in the middle layer and real-time cleaning of deposited material in the lower layer. This prevents the high density of fruit pulp from settling and clumping, preventing spoilage and deterioration that could affect the quality of the fermentation liquid. Simultaneously, it reduces residue at the bottom of the tank, lowers the difficulty of equipment cleaning, and improves the adaptability of the equipment for continuous production.

[0014] A further technical solution involves an external constant-temperature circulation unit, a constant-temperature jacket, and several temperature sensors. The constant-temperature jacket covers the sidewalls of the tank, achieving uniform heat exchange throughout the tank via a circulating medium. The external constant-temperature circulation unit is connected to the constant-temperature jacket, providing stable temperature control power. The temperature sensors are distributed at different heights within the tank cavity, collecting multi-point temperature data in real time. This external temperature control structure avoids internal heat exchange components occupying tank space and promoting the growth of residual materials. Multi-point temperature measurement accurately reflects the temperature distribution within the tank, facilitating timely adjustment of temperature control parameters by the controller. This improves the uniformity and accuracy of fig fermentation temperature control, ensuring a stable fermentation process.

[0015] A further technical solution involves an intelligent monitoring mechanism comprising a pH sensor, a dissolved oxygen sensor, a liquid level sensor, a pressure sensor, and a data transmission module. The pH sensor monitors the acidity or alkalinity of the fermentation broth, the dissolved oxygen sensor monitors the anaerobic environment inside the tank, the liquid level sensor monitors the material level, and the pressure sensor monitors the pressure inside the tank. Parameters collected by each sensor are synchronously transmitted to the controller via the data transmission module. This multi-parameter monitoring system can comprehensively monitor the entire fig fermentation process, providing data support for the controller's automated control, enabling real-time monitoring and feedback of fermentation parameters, avoiding the lag of manual monitoring, and improving the controllability and stability of the fermentation process.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] This invention optimizes the fit between the sealing cap and the tank by forming a nested insertion and positioning fit between the annular insertion pipe and positioning pin of the sealing cap and the insertion groove and pin hole of the tank body. This improves the positioning accuracy and tightness of the fit, reduces the probability of gaps, effectively maintains the stability of the anaerobic fermentation environment inside the tank, reduces the interference of external air on the fermentation process, and provides a reliable sealing foundation for the anaerobic fermentation of figs.

[0018] This invention achieves automatic replenishment of the water seal liquid through the float valve of the flange-integrated annular self-regulating constant pressure water seal assembly. Combined with the vent pipe for stable air delivery and the pressure regulating assembly, it achieves bidirectional control of the tank pressure. The pressure regulating component is not directly connected to the inside and outside of the tank, avoiding damage to the anaerobic environment, stabilizing the water seal effect and the pressure state inside the tank, reducing the impact of water level fluctuations and pressure anomalies on the sealing effect and fermentation process, improving the continuous operation of the water seal assembly, eliminating the need for frequent manual maintenance, and adapting to the process characteristics of long-cycle anaerobic fermentation of figs.

[0019] This invention addresses the unique challenges of fig fermentation through a layered, customized design of a pectin layer-breaking and anti-deposition layered stirring mechanism. The upper layer breaks down the pectin layer on the liquid surface, the middle layer drives material circulation, and the lower layer cleans the sediment at the bottom of the tank. This improves the uniformity of material fermentation, reduces sedimentation and uneven fermentation, enhances the continuity of equipment operation and the quality of the fermented liquid, and improves the equipment's adaptability to fig fermentation.

[0020] To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0022] Figure 2 This is a schematic diagram of the structure of the present invention in frontal three-dimensional cross-section;

[0023] Figure 3 This is a block diagram of the temperature control mechanism of the present invention;

[0024] Figure 4 This is a structural connection block diagram of the controller of the present invention;

[0025] Figure 5 This is a block diagram of the pressure regulating component of the present invention.

[0026] In the diagram: 1. Tank body; 11. Insertion groove; 2. Sealing cap; 21. Positioning pin; 22. Insertion pipe; 3. Feeding mechanism; 4. Pectin layer breaking-anti-settling stratified stirring mechanism; 41. Drive motor; 42. Stirring shaft; 43. Upper layer liftable pectin layer breaking paddle; 431. Lifting sleeve; 432. Serrated crushing blades; 433. Height adjustment component; 44. Middle layer guide stirring paddle; 45. Lower layer anti-settling scraper; 5. Discharge mechanism; 6. Temperature control mechanism; 61. External constant temperature circulation unit; 62. Constant temperature jacket; 63. Temperature... 7. Temperature sensor; 8. Intelligent monitoring mechanism; 9. pH sensor; 10. Dissolved oxygen sensor; 11. Liquid level sensor; 12. Pressure sensor; 13. Data transmission module; 14. Controller; 15. Flange integrated annular self-regulating constant pressure water seal assembly; 16. Annular water seal groove; 17. Annular floating bell jar; 18. Automatic water replenishment assembly; 19. Water storage box; 10. Water replenishment pipe; 11. Float valve; 12. Pressure regulating assembly; 13. Counterweight; 14. Pressure relief valve; 15. Vacuum breaker valve; 16. Vent pipe. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0028] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0029] Example 1

[0030] like Figure 1-5 As shown, this embodiment of the invention provides an anaerobic fermentation tank for fig fermentation plant beverage, including a tank body 1, a sealing cover 2, a feeding mechanism 3, a pectin layer breaking-anti-deposition stratification stirring mechanism 4, a discharging mechanism 5, a temperature control mechanism 6, an intelligent monitoring mechanism 7, a controller 8, and a flange-integrated annular self-regulating constant pressure water seal assembly 9.

[0031] In this embodiment, the tank body 1 is a cylindrical hollow stainless steel structure. The top of the tank body 1 is integrally fixed with an annular support flange. An annular insertion groove 11 is opened at the center of the top of the support flange. Four cylindrical pin holes are evenly opened around the insertion groove 11. The sealing cover 2 is a circular stainless steel cover plate. An annular insertion pipe 22 is fixed at the center of the bottom. Four cylindrical positioning pins 21 are evenly fixed around the insertion pipe 22. The insertion pipe 22 and the insertion groove 11 are interlocked with a gap. The positioning pins 21 are tightly inserted into the pin holes to realize the circumferential positioning and axial limiting of the sealing cover 2 and the tank body 1. The bottom of the annular water seal groove 91 of the flange-integrated annular self-regulating constant pressure water seal assembly 9 is continuously welded to the upper surface of the supporting flange. The annular floating bell jar 92 has an inverted U-shaped annular structure and is movably fitted inside the annular water seal groove 91, with its top movably fitting against the bottom of the sealing cover 2. Several vent pipes 95 are evenly and fixedly connected to the bottom of the annular water seal groove 91. The bottom end of the vent pipe 95 passes through the top supporting flange of the tank 1 and is connected to the inner cavity of the tank 1, while the top end of the vent pipe 95 is connected to the inner cavity of the annular water seal groove 91. The water storage box 931 of the automatic water replenishment component 93 is fixed to the outer wall of the tank 1 by a bracket. The water replenishment pipe 932 passes horizontally through the side wall of the annular water seal groove 91. The float valve 933 is fixed to the outlet of the water replenishment pipe 932. The float end is suspended in the water seal liquid in the annular water seal groove 91. The counterweight 941 of the pressure regulating component 94 is a circular metal block, which is placed at the top center of the annular floating bell jar 92. The pressure relief valve 942 and the vacuum breaking valve 943 are set on the sealing cover 2 and communicate with the inner cavity of the annular floating bell jar 92. The drive motor 41 of the pectin layer breaking-anti-deposition stratified stirring mechanism 4 is fixed to the top center of the sealing cover 2 via a flange. The stirring shaft 42 is fixedly connected to the output end of the drive motor 41 via a coupling and extends vertically through the sealing cover 2 to the bottom of the inner cavity of the tank 1. The lifting sleeve 431 of the upper layer liftable pectin layer breaking paddle 43 is movably sleeved on the upper part of the stirring shaft 42. Four sawtooth breaking blades 432 are evenly welded to the periphery of the lifting sleeve 431. The height adjustment component 433 is a fastening bolt that passes through the lifting sleeve 431 and connects to the stirring shaft 42. The middle layer guide stirring paddle 44 is a propeller structure and is welded and fixed to the middle of the stirring shaft 42. The lower layer anti-deposition scraper 45 is an arc scraper with its bottom end attached to the inner wall of the bottom of the inner cavity of the tank 1 and its top end welded to the bottom end of the stirring shaft 42. The temperature control mechanism 6 has a double-layered stainless steel jacket 62, which is welded to the outside of the side wall of the tank 1. The external temperature-controlled circulation unit 61 is connected to the liquid outlet pipe and the temperature-controlled jacket 62 through the liquid inlet pipe. Two temperature sensors 63 extend through the side wall of the tank 1 to the upper and lower parts of the inner cavity, respectively. The pH sensor 71 and dissolved oxygen sensor 72 of the intelligent monitoring mechanism 7 extend through the side wall of the tank 1 to the middle of the inner cavity. The liquid level sensor 73 extends through the sealing cover 2 to the upper part of the inner cavity. The pressure sensor 74 extends through the sealing cover 2 to the top of the inner cavity. The data transmission module 75 is integrated inside the controller 8 and is connected to the signals of each sensor.The controller 8 is fixed to the outer wall of the tank 1 by a bracket and is connected to the drive motor 41, the external constant temperature circulation unit 61, the pressure relief valve 942, the vacuum breaker valve 943, and the height adjustment component 433 for control. It is also connected to the signals of each sensor. The feeding mechanism 3 is installed through the sealing cover 2; the discharging mechanism 5 is a discharge pipe structure, which is vertically fixed to the center of the bottom of the tank 1.

[0032] Example 2

[0033] The difference between this embodiment and embodiment 1 is that the height adjustment component 433 is set as an electric push rod adjustment structure, and the liquid level sensor 73 and the height adjustment component 433 are electrically linked through the controller 8.

[0034] In this embodiment, the liquid level sensor 73 collects the liquid level data of the fermentation material in the tank 1 in real time and transmits it to the controller 8 through the data transmission module 75. The controller 8 automatically controls the height adjustment component 433 to extend and retract according to the preset liquid level threshold and the real-time liquid level data, driving the lifting sleeve 431 to move up and down along the stirring shaft 42 axis, and precisely adjusting the height of the serrated crushing blade 432 so that the crushing blade always maintains a suitable contact state with the pectin layer on the fermentation liquid surface. The controller 8 simultaneously adjusts the output speed of the drive motor 41 according to the fermentation process to match the stirring and pectin layer breaking requirements of different liquid levels and different fermentation stages, without the need for manual adjustment, thus improving the automation adaptability of the stirring mechanism.

[0035] Example 3

[0036] The difference between this embodiment and embodiment 2 is that the counterweight 941 is set as three sets of detachable metal blocks, the pressure relief valve 942 and the vacuum breaker valve 943 are both connected to the controller 8 in a fully automatic electrical connection, and the pressure sensor 74 collects the pressure data in the tank in real time and transmits it to the controller 8.

[0037] In this embodiment, the operator can flexibly increase or decrease the number of counterweights 941 according to the gas production characteristics and pressure requirements at different stages of fig fermentation, adjust the downward pressure force of the annular floating bell 92 on the water seal liquid, and set the basic pressure range inside the tank. The pressure sensor 74 monitors the pressure inside the tank in real time. When the pressure exceeds the set upper limit, the controller 8 automatically controls the pressure relief valve 942 to open, releasing excess gas from the cavity of the annular floating bell 92 to relieve pressure. When the pressure is lower than the set lower limit, the controller 8 automatically controls the vacuum breaker valve 943 to open, supplementing a small amount of gas to replenish pressure. The entire process achieves fully automatic adaptive regulation of the pressure inside the tank without manual intervention, ensuring stable fermentation pressure.

[0038] Example 4

[0039] The difference between this embodiment and embodiment 3 is that: the outer wall of the insertion pipe 22 is nested with a silicone sealing gasket, the lower anti-deposition scraper 45 is made of wear-resistant stainless steel, and the temperature sensor 63 is set into three groups, which extend to the upper, middle and lower parts of the inner cavity of the tank 1 respectively.

[0040] In this embodiment, the silicone sealing gasket fills the gap between the insertion pipe 22 and the insertion groove 11, further improving the sealing performance between the sealing cap 2 and the tank body 1 and strengthening the anaerobic environment protection capability; the wear-resistant stainless steel lower anti-deposition scraper 45 extends its service life, reduces wear caused by long-term scraping, and ensures the cleaning effect of the tank bottom; three sets of temperature sensors 63 collect temperature data at different heights inside the tank in real time, and the controller 8 adjusts the operation of the external constant temperature circulation unit 61 according to the average temperature of multiple points, reducing the temperature difference inside the tank, improving the uniformity of temperature control, and providing a stable temperature environment for fig fermentation.

[0041] Working principle

[0042] When the anaerobic fermenter of this invention is put into use, its overall operation follows a closed-loop logic of sealed positioning → aeration and gas introduction → automatic water replenishment and pressure regulation → layered stirring → precise temperature control and monitoring → automated collaborative control. All components work together to complete the anaerobic fermentation of figs.

[0043] 1. Sealing and positioning principle: The annular insertion pipe 22 at the bottom of the sealing cover 2 is nested and inserted into the insertion groove 11 of the support flange of the tank body 1. The positioning pin 21 is inserted and engaged with the pin hole to achieve circumferential limiting and axial positioning, preventing misalignment. The sealing gasket on the outer wall of the insertion pipe 22 fills the gap and works with the integrated annular self-adjusting constant pressure water seal assembly 9 of the flange to provide a water seal, providing double protection for the anaerobic environment inside the tank and preventing the entry of outside air.

[0044] 2. Ventilation and gas guiding principle: The gas generated by fermentation in tank 1 is stably transported to the inner cavity of the annular water seal groove 91 through the evenly distributed ventilation pipes 95, providing a stable airflow channel for water seal sealing and pressure regulation, and avoiding airflow turbulence from affecting the stability of water seal operation.

[0045] 3. Automatic water seal replenishment principle: When the water seal liquid in the annular water seal tank 91 drops due to evaporation or fluctuation, the float of the float valve 933 falls with the water level, opening the water replenishment pipe 932 channel, and the water seal liquid in the water storage box 931 automatically flows into the annular water seal tank 91; after the water level reaches the standard, the float rises and closes the water replenishment channel, automatically maintaining a constant water level throughout the process without manual maintenance, ensuring a continuous and stable water seal sealing effect.

[0046] 4. Pressure Adaptive Control Principle: The gas produced during fermentation in the tank enters the annular water seal tank 91 through the vent pipe 95. When the pressure increases, the gas pushes up the annular floating bell jar 92, and excess gas is discharged through the water seal liquid. When the pressure exceeds the threshold, the controller 8 controls the pressure relief valve 942 to open and relieve pressure. When negative pressure occurs in the tank, the controller 8 controls the vacuum breaking valve 943 to open and replenish pressure. The counterweight 941 can adjust the downward pressure of the annular floating bell jar 92 to adapt to the pressure requirements of different fermentation stages. The pressure regulating component is not directly connected to the inner cavity of the tank 1 to avoid damage to the anaerobic environment.

[0047] 5. Layered stirring principle: The drive motor 41 drives the stirring shaft 42 to rotate. The upper layer, the serrated breaking blades 432 of the pectin layer breaking paddle 43, rotate to break the pectin layer on the liquid surface. The height adjustment component 433 can adjust the height of the blades according to the liquid level. The middle layer, the guide stirring paddle 44, drives the material to circulate up and down, ensuring that the material and the inoculum are mixed evenly. The lower layer, the anti-settling scraper 45, rotates against the bottom of the tank to scrape off the deposited pulp and prevent clumping and spoilage.

[0048] 6. Temperature control and monitoring principle: The external constant temperature circulation unit 61 delivers circulating medium to the constant temperature jacket 62 to achieve uniform temperature control inside the tank; multi-point temperature sensor 63, pH sensor 71, dissolved oxygen sensor 72, liquid level sensor 73, and pressure sensor 74 collect fermentation parameters in real time and transmit them to the controller 8 through the data transmission module 75.

[0049] 7. Automated collaborative control principle: After receiving monitoring data, the controller 8 automatically adjusts the speed of the drive motor 41, the operating status of the external constant temperature circulation unit 61, the extension and retraction of the height adjustment component 433, and the opening and closing of the pressure relief valve 942 and the vacuum breaking valve 943 to achieve unattended automated operation of the entire process, which meets the requirements of fig anaerobic fermentation process.

[0050] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An anaerobic fermentation tank for a fig-based fermented plant beverage, characterized in that, The system includes a tank body (1), a sealing cover (2), a feeding mechanism (3), a pectin layer breaking-anti-deposition stratification stirring mechanism (4), a discharging mechanism (5), a temperature control mechanism (6), an intelligent monitoring mechanism (7), a controller (8), and a flange-integrated annular self-regulating constant pressure water seal assembly (9). A supporting flange is fixedly installed on the top of the tank body (1), and an annular insertion groove (11) and several pin holes are opened on the top of the supporting flange. An annular insertion pipe (22) and several positioning pins (21) are fixedly installed at the bottom of the sealing cover (2). The insertion pipe (22) and the insertion groove (11) are nested and inserted into each other, and the positioning pins (21) are inserted into each other. The flange assembly... The annular self-regulating constant pressure water seal assembly (9) is fixedly installed on the upper surface of the support flange of the tank body (1) and located below the sealing cover (2); the pectin layer breaking-anti-deposition stratification stirring mechanism (4) penetrates the middle of the sealing cover (2) and extends to the inner cavity of the tank body (1); the feeding mechanism (3) is installed through the sealing cover (2), and the discharging mechanism (5) is fixedly installed at the bottom of the tank body (1); the temperature control mechanism (6) is covered and installed on the outer side wall of the tank body (1); the monitoring end of the intelligent monitoring mechanism (7) penetrates the tank body (1) and the sealing cover (2) and extends to the inner cavity of the tank body (1); the controller (8) is fixedly installed on the outer side wall of the tank body (1).

2. The anaerobic fermentation tank for a fig-based fermented plant beverage according to claim 1, characterized in that, The flange-integrated annular self-regulating constant pressure water seal assembly (9) includes an annular water seal groove (91), an annular floating bell jar (92), an automatic water replenishment assembly (93), a pressure regulating assembly (94), and several vent pipes (95); the bottom of the annular water seal groove (91) is fixedly connected to the upper surface of the support flange of the tank body (1); the annular floating bell jar (92) is movably fitted inside the annular water seal groove (91), and the top of the annular floating bell jar (92) is movably fitted to the bottom of the sealing cover (2); the automatic water replenishment assembly (93) is fixedly set on the outer wall of the tank body (1) and communicates with the inside of the annular water seal groove (91); the pressure regulating assembly (94) is set on the sealing cover (2) and communicates with the inner cavity of the annular floating bell jar (92); the vent pipes (95) are fixedly connected to the bottom of the annular water seal groove (91), and the bottom of several vent pipes (95) are connected to the inner cavity of the tank body (1).

3. The anaerobic fermentation tank for a fig-based fermented plant beverage according to claim 2, characterized in that, The automatic water replenishment component (93) includes a water storage box (931), a water replenishment pipe (932), and a float valve (933). The water storage box (931) is fixedly connected to the outer wall of the tank body (1). One end of the water replenishment pipe (932) is connected to the inside of the water storage box (931), and the other end passes through the side wall of the annular water seal groove (91) and is connected to the inside of the annular water seal groove (91). The float valve (933) is fixedly installed at the outlet of the water replenishment pipe (932), and the float end of the float valve (933) is located inside the annular water seal groove (91).

4. The anaerobic fermentation tank for a fig-based fermented plant beverage according to claim 2, characterized in that, The pressure regulating assembly (94) includes a counterweight (941), a pressure relief valve (942), and a vacuum breaker valve (943); the counterweight (941) is detachably placed on the top of the annular floating bell jar (92); the pressure relief valve (942) is located on the sealing cover (2) and communicates with the inner cavity of the annular floating bell jar (92); the vacuum breaker valve (943) is located on the sealing cover (2) and communicates with the inner cavity of the annular floating bell jar (92).

5. The anaerobic fermentation tank for a fig-based fermented plant beverage according to claim 1, characterized in that, The pectin layer breaking-anti-deposition stratified stirring mechanism (4) includes a drive motor (41), a stirring shaft (42), an upper liftable pectin layer breaking paddle (43), a middle flow guiding stirring paddle (44), and a lower anti-deposition scraper (45). The drive motor (41) is fixedly connected to the top center of the sealing cover (2). One end of the stirring shaft (42) is fixedly connected to the output end of the drive motor (41), and the other end passes through the sealing cover (2) and extends to the bottom of the inner cavity of the tank (1). The upper liftable pectin layer breaking paddle (43), the middle flow guiding stirring paddle (44), and the lower anti-deposition scraper (45) are fixedly arranged around the stirring shaft (42) from top to bottom.

6. The anaerobic fermentation tank for a fig-based fermented plant beverage according to claim 5, characterized in that, The upper liftable pectin layer breaking paddle (43) includes a lifting sleeve (431), several serrated breaking blades (432), and a height adjusting component (433); the lifting sleeve (431) is movably sleeved on the upper periphery of the stirring shaft (42); the several serrated breaking blades (432) are uniformly and fixedly connected to the periphery of the lifting sleeve (431); the height adjusting component (433) is fixedly connected between the lifting sleeve (431) and the stirring shaft (42).

7. The anaerobic fermentation tank for a fig-based fermented plant beverage according to claim 5, characterized in that, The bottom end of the lower anti-deposition scraper (45) is in contact with the inner wall of the bottom cavity of the tank (1); the middle-layer guide stirring paddle (44) is fixedly installed on the middle periphery of the stirring shaft (42).

8. The anaerobic fermentation tank for a fig-fermented plant beverage according to claim 1, characterized in that, The temperature control mechanism (6) includes an external constant temperature circulation unit (61), a constant temperature jacket (62), and several temperature sensors (63); the constant temperature jacket (62) is covered and fixed to the outside of the side wall of the tank (1); the external constant temperature circulation unit (61) is fixedly installed on the outside of the tank (1), and the external constant temperature circulation unit (61) is connected to the inside of the constant temperature jacket (62) through a pipeline; the several temperature sensors (63) penetrate the side wall of the tank (1) and extend to different heights inside the tank (1).

9. The anaerobic fermentation tank for a fig-based fermented plant beverage according to claim 1, characterized in that, The intelligent monitoring mechanism (7) includes a pH sensor (71), a dissolved oxygen sensor (72), a liquid level sensor (73), a pressure sensor (74), and a data transmission module (75). The pH sensor (71) and the dissolved oxygen sensor (72) penetrate the side wall of the tank (1) and extend into the inner cavity of the tank (1). The liquid level sensor (73) penetrates the sealing cover (2) and extends into the inner cavity of the tank (1). The pressure sensor (74) penetrates the sealing cover (2) and extends into the inner cavity of the tank (1). The data transmission module (75) is fixedly installed inside the controller (8), and the data transmission module (75) is connected to the pH sensor (71), the dissolved oxygen sensor (72), the liquid level sensor (73), and the pressure sensor (74) respectively.

10. The anaerobic fermentation tank for a fig-fermented plant beverage according to claim 1, characterized in that, The controller (8) is connected to the drive motor (41), the external constant temperature circulation unit (61), the pressure relief valve (942), the vacuum breaking valve (943), and the height adjustment component (433) respectively, and is also connected to the temperature sensor (63), pH sensor (71), dissolved oxygen sensor (72), liquid level sensor (73), and pressure sensor (74) for signal connection.

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