Multifunctional integrated liquid feed fermentation device

Abstract

The application discloses a multifunctional integrated liquid feed fermentation device, which comprises a fermentation tank body, a feeding inlet and a driving motor, a supporting foot for supporting the fermentation tank body is fixedly installed at the bottom end of the side surface of the fermentation tank body, a control box and a heater are fixedly installed on the side surface of the fermentation tank body respectively, and the control box is used for controlling the heater and the driving motor. The application effectively solves the technical problems of poor adaptability of the fixed stirring paddle of the traditional fermentation device, easy deposition at the tank bottom, accumulation of liquid surface scum and mixed dead zone through the cooperative linkage structure of the lifting floating assembly, the rotatable stirring blade and the outer stirring assembly. The lifting floating assembly can drive the driven stirring shaft to float up and down adaptively with the fermentation working condition, a plurality of groups of annular array stirring blades are matched, the stirring blades can adapt to the viscosity change of the material in the whole fermentation process, the bottom stirring is strengthened in the high-viscosity material stage, and the global mixing is optimized in the dilution stage, so that the deposition of heavy components and the local overheating inactivation phenomenon are eliminated.

Description

Technical Field

[0001] This invention relates to the field of feed fermentation equipment technology, and in particular to a multifunctional integrated liquid feed fermentation equipment. Background Technology

[0002] Currently, multifunctional integrated liquid feed fermentation devices have been gradually applied in large-scale breeding and feed processing. These devices typically integrate fermentation tanks, temperature control systems, pH adjustment modules, stirring mechanisms, and online monitoring sensors into one unit, aiming to achieve automated control of the liquid feed fermentation process. By integrating heating jackets, acid and alkali supply pumps, and dissolved oxygen detection units, the device can maintain the basic environmental parameters for microbial growth. The stirring system mostly uses motor-driven mechanical stirring paddles, combined with the baffle structure inside the tank, to promote material mixing and heat transfer. Some devices are also equipped with automatic feed and discharge valves, cleaning nozzles, and data acquisition interfaces, facilitating continuous operation and process recording between batches. These integrated designs have improved the production efficiency and operational convenience of liquid feed to a certain extent.

[0003] However, existing equipment still has problems with its stirring mechanism during use. Traditional stirring paddles are mostly fixed single-layer blades, which are difficult to cope with the drastic changes in the rheological properties of liquid feed at different fermentation stages. For example, in the initial stage of fermentation, the material viscosity is high, and the fixed blades cannot provide sufficient axial circulation capacity, causing heavy components such as corn steep liquor and molasses to settle at the bottom of the tank, forming a bottom sediment layer. Local heat cannot be dissipated in time, which can easily cause the sediment to overheat, leading to protein denaturation or microbial inactivation. After entering the vigorous gas production period, a large number of CO2 bubbles carry solids to the surface. When the material floats to the surface, a thick layer of scum accumulates on the surface because the paddles cannot effectively renew the surface or break up the scum. This hinders gas exchange and heat dissipation. At the same time, the microorganisms inside the scum die due to nutrient deficiency. During the fermentation maturation and dilution period, although the viscosity of the material decreases, the residual small particles easily form a mixing dead zone on the tank wall and the far end of the paddles. This results in uneven distribution of nutrients and microbial concentration in the final product. The problems of bottom sedimentation, scum accumulation, and uneven local mixing caused by the insufficient adaptability of single-layer fixed paddles directly affect the uniformity of microbial growth and the consistency of the final fermentation product. Therefore, it is urgent to innovate and improve the mechanical structure, such as adopting multi-layer variable diameter blade combination, lifting and lowering stirring mechanism, adding bottom sweeping device, and developing mechanical execution system that can adaptively adjust the speed and blade angle according to the fermentation stage, so as to ensure efficient mixing and homogenization of materials throughout the entire cycle.

[0004] Therefore, how to provide a multifunctional integrated liquid feed fermentation device is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] One object of the present invention is to provide a multifunctional integrated liquid feed fermentation device, which solves the problems mentioned in the background art.

[0006] According to an embodiment of the present invention, a multifunctional integrated liquid feed fermentation device includes a fermentation tank, a feed inlet, and a drive motor. Support feet for the fermentation tank are fixedly installed on the side of the fermentation tank at its bottom end. A control box and a heater are fixedly installed on the side of the fermentation tank, with the control box controlling the heater and the drive motor. The feed inlet is located on the side of the fermentation tank near the top. The drive motor is fixedly installed on the top of the fermentation tank. A drive shaft is rotatably installed on the top of the inner wall of the fermentation tank. A movable shaft is fixedly installed at the top of the drive shaft, extending through the fermentation tank and above it, where it is fixedly connected to the output shaft of the drive motor. A driven stirring shaft is movably sleeved on the surface of the drive shaft. A lifting and floating assembly for controlling the up-and-down movement of the driven stirring shaft is provided at the top of the driven stirring shaft. A connecting assembly is rotatably installed on the side of the driven stirring shaft, with stirring blades for mixing materials fixedly installed on the end face of the connecting assembly.

[0007] The lifting and floating assembly includes a spring, a turntable, a ripple groove, a push roller, and a fixed frame. The fixed frame is fixedly installed on the inner side wall of the fermentation tank near the top. The push roller is fixedly installed on the top of the fixed frame near the inner side. The fixed frame is movably sleeved on the outside of the driven stirring shaft. The turntable is fixedly sleeved on the surface of the driven stirring shaft near the top. The ripple groove is opened on the lower surface of the turntable. The surface of the push roller is movably connected to the surface of the ripple groove. The spring is movably sleeved on the surface of the drive shaft between the driven shaft and the driven stirring shaft.

[0008] The number of push rollers is two sets, and the two sets of push rollers are arranged in a ring array with the drive shaft as the array center.

[0009] The connecting assembly includes a stirring transmission gear and a transmission shaft. A strip-shaped groove is provided on the side of the drive shaft corresponding to the connecting assembly. A strip-shaped tooth groove is provided on one side of the inner wall of the strip-shaped groove. The transmission shaft is rotatably installed inside the driven stirring shaft, and one end of the transmission shaft passes through the driven stirring shaft and extends to the outside of the driven stirring shaft and is fixedly connected to the end face of the stirring blade. The stirring transmission gear is fixedly installed at the end of the transmission shaft located inside the driven stirring shaft, and the stirring transmission gear meshes with the strip-shaped tooth groove.

[0010] The number of connecting components is four sets, and the four sets of connecting components are arranged in a ring array with the drive shaft as the array center. The number and position of the stirring blades are matched with the number and position of the connecting components.

[0011] The drive shaft has a "spline shaft" design, and the inner wall shape of the driven stirring shaft matches the shape of the drive shaft.

[0012] The fermentation tank is equipped with a transmission component at the corresponding lifting and floating component inside the fermentation tank, and an outer stirring component is rotatably installed inside the fermentation tank and rotated by the transmission component.

[0013] The transmission assembly includes a drive gear, an outer transmission gear, an inner gear ring, and a rotating disk. The rotating disk is rotatably mounted on the inner wall of the fermentation tank via a sealed bearing and is located below the fixed frame. The drive gear is fixedly sleeved on the surface of the driven stirring shaft near the top. The outer transmission gear is fixedly mounted on the inner side of the fixed frame via a fixed seat and meshes with the drive gear. The inner gear ring is fixedly mounted on the top of the rotating disk, and the inner teeth of the rotating disk mesh with the outer transmission gear.

[0014] The outer stirring assembly includes a side scraper and a bottom scraper. The side scraper is fixedly installed at the bottom of the rotating disk, and its side surface is movably attached to the inner wall of the fermentation tank. The bottom scraper is shaped like a cross and is fixedly installed at the bottom end of the side scraper. The lower surface of the bottom scraper is in contact with the bottom of the inner wall of the fermentation tank.

[0015] The driven stirring shaft has a bottom docking groove at its bottom. A docking shaft is fixedly installed at the top of the bottom scraper corresponding to the bottom docking groove. The top of the docking shaft is movably inserted into the bottom docking groove. There are four sets of side scrapers, which are arranged in a ring array with the drive shaft as the array center. The side scrapers are arc-shaped rods. The inner wall of the rotating disk is movably sleeved on the surface of the driven stirring shaft through a movable sealing assembly.

[0016] The beneficial effects of this invention are: This invention effectively solves the technical problems of poor adaptability of fixed stirring paddles in traditional fermentation devices, such as bottom sedimentation, surface scum accumulation, and mixing dead zones, through the coordinated linkage structure of the lifting and floating component, rotatable stirring blades, and outer stirring component. The lifting and floating component can drive the driven stirring shaft to adaptively float up and down according to the fermentation conditions. Combined with multiple sets of annular array stirring blades, it can adapt to changes in material viscosity throughout the fermentation process. In the high-viscosity material stage, bottom stirring is strengthened, and in the thinning stage, overall mixing is optimized, thereby preventing the deposition of heavy components and local overheating and inactivation. The arc-shaped side scraper and cross-shaped bottom scraper of the outer stirring component can clean the residual material on the tank wall and bottom in real time, completely eliminating mixing dead zones, breaking up the surface scum layer, ensuring gas exchange and uniform heat dissipation in the tank, and improving the uniformity of microbial growth. At the same time, the spline-type drive shaft transmission is stable, and the multi-gear transmission structure has strong power transmission synchronization. The whole machine does not require manual adjustment of the stirring structure, automatically adapts to the entire fermentation cycle, effectively improves the fermentation quality and consistency of liquid feed, and has a high degree of structural integration and stable operation, making it suitable for the needs of continuous fermentation production in large-scale breeding. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall three-dimensional structure of a multifunctional integrated liquid feed fermentation device proposed in this invention.

[0018] Figure 2 This is a three-dimensional cross-sectional view of the fermentation tank in a multifunctional integrated liquid feed fermentation device proposed in this invention.

[0019] Figure 3 This is a three-dimensional structural diagram of the lifting and floating component, driven stirring shaft, connecting component, and stirring blade in a multifunctional integrated liquid feed fermentation device proposed in this invention.

[0020] Figure 4 In the multifunctional integrated liquid feed fermentation device proposed in this invention Figure 3 A magnified structural diagram of point A in the middle.

[0021] Figure 5 This is a three-dimensional structural diagram of the disassembled components of the lifting and floating assembly, driven stirring shaft, connecting assembly, and stirring blades in a multifunctional integrated liquid feed fermentation device proposed in this invention.

[0022] The attached diagram shows: 1. Fermentation tank; 2. Control box; 3. Heater; 4. Feed inlet; 5. Drive motor; 6. Lifting and floating assembly; 7. Driven stirring shaft; 8. Connecting assembly; 9. Stirring blade; 10. Outer stirring assembly; 11. Transmission assembly; 12. Drive shaft; 13. Spring component; 14. Turntable; 15. Fluctuating groove; 16. Push roller; 17. Fixing frame; 18. Strip groove; 19. Strip toothed groove; 20. Stirring transmission gear; 21. Transmission shaft; 22. Drive gear; 23. Outer transmission gear; 24. Internal gear ring; 25. Rotary disk; 26. Side scraper; 27. Bottom scraper; 28. Bottom docking groove; 29. ​​Docking shaft. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention. Example

[0024] refer to Figures 1-5In this embodiment, the system includes a fermentation tank 1, a feed inlet 4, and a drive motor 5. Support feet for the fermentation tank 1 are fixedly installed on the side of the fermentation tank 1 at its bottom end. A control box 2 and a heater 3 are fixedly installed on the side of the fermentation tank 1, respectively. The control box 2 controls the heater 3 and the drive motor 5. The feed inlet 4 is located on the side of the fermentation tank 1 near its top. The drive motor 5 is fixedly installed on the top of the fermentation tank 1. A drive shaft 12 is rotatably mounted on the top of the inner wall of the fermentation tank 1. A movable shaft is fixedly installed at the top of the drive shaft 12. The top of the movable shaft passes through the fermentation tank 1 and extends to the top of the fermentation tank 1, where it is fixedly connected to the output shaft of the drive motor 5. A driven stirring shaft 7 is movably sleeved on the surface of the drive shaft 12. The drive shaft 12 has a splined shaft design, and the inner wall shape of the driven stirring shaft 7 matches the shape of the drive shaft 12. The driven stirring shaft 7 is provided with a lifting and floating assembly 6 at the top to control the up and down movement of the driven stirring shaft 7. The lifting and floating assembly 6 includes a spring 13, a turntable 14, a undulating groove 15, a push roller 16 and a fixed frame 17. The fixed frame 17 is fixedly installed on the inner side wall of the fermentation tank 1 near the top. The push roller 16 is fixedly installed on the top of the fixed frame 17 near the inner side. The fixed frame 17 is movably sleeved on the outside of the driven stirring shaft 7. The turntable 14 is fixedly sleeved on the surface of the driven stirring shaft 7 near the top. The undulating groove 15 is opened on the lower surface of the turntable 14. The surface of the push roller 16 is movably connected to the surface of the undulating groove 15. The spring 13 is movably sleeved on the surface of the drive shaft 12 located between the drive shaft and the driven stirring shaft 7. There are two sets of push rollers 16, and the two sets of push rollers 16 are arranged in a ring array with the drive shaft 12 as the array center.

[0025] In practice, the drive motor 5 can drive the splined drive shaft 12 to rotate stably. The splined transmission method can ensure that the drive shaft 12 and the driven stirring shaft 7 rotate synchronously, while allowing the driven stirring shaft 7 to slide vertically along the drive shaft 12 without affecting the power transmission. The fixed frame 17 provides stable support for the lifting and floating assembly 6. The two sets of ring array push rollers 16 are precisely matched with the wave groove 15 at the bottom of the turntable 14. When the turntable 14 rotates with the driven stirring shaft 7, the rollers and the groove are squeezed together, and the elastic extension and contraction of the spring 13 are used to drive the driven stirring shaft 7 to float up and down continuously, thereby adapting to the stirring height requirements of materials at different fermentation stages and solving the problem that the traditional fixed stirring shaft cannot adapt to the material state.

[0026] A connecting assembly 8 is rotatably mounted on the side of the driven stirring shaft 7, and a stirring blade 9 for mixing materials is fixedly mounted on the end face of the connecting assembly 8.

[0027] In specific implementation, the connecting component 8 serves as the connecting transmission structure between the stirring blade 9 and the driven stirring shaft 7. It can provide an installation base for the adaptive rotation of the stirring blade 9, enabling the stirring blade 9 to achieve self-rotation adjustment while revolving and stirring, thereby changing the stirring shear force and mixing range, adapting to the mixing needs of different materials with high and low viscosity, and improving the uniformity of material mixing in the tank. Example

[0028] refer to Figures 1-5 In this embodiment, the connecting assembly 8 includes a stirring transmission gear 20 and a transmission shaft 21. A strip groove 18 is provided on the side of the drive shaft 12 corresponding to the connecting assembly 8. A strip tooth groove 19 is provided on one side of the inner wall of the strip groove 18. The transmission shaft 21 is rotatably installed inside the driven stirring shaft 7, and one end of the transmission shaft 21 passes through the driven stirring shaft 7 and extends to the outside of the driven stirring shaft 7 and is fixedly connected to the end face of the stirring blade 9. The stirring transmission gear 20 is fixedly installed at one end of the transmission shaft 21 located inside the driven stirring shaft 7. The stirring transmission gear 20 and the strip tooth groove 19 mesh with each other. There are four sets of connecting assemblies 8. The four sets of connecting assemblies 8 are arranged in a ring array with the drive shaft 12 as the array center. The number and position of the stirring blades 9 are matched with the number and position of the connecting assemblies 8.

[0029] In practice, when the driven stirring shaft 7 revolves with the drive shaft 12, the internal stirring transmission gear 20 continuously meshes with the strip toothed groove 19 on the drive shaft 12, which can drive the transmission shaft 21 and the stirring blade 9 to rotate autonomously, achieving a dual stirring effect of the stirring blade 9 revolving and rotating. The four sets of annular array stirring blades 9 can cover the internal space of the fermentation tank 1 in all directions, without any dead corners. The rotating stirring blades 9 can effectively disperse the bubbles and scum generated during the fermentation process and break the liquid surface accumulation layer, thereby ensuring normal gas exchange in the tank and avoiding the death of microorganisms due to lack of oxygen. Example

[0030] refer to Figures 1-5In this embodiment, a transmission assembly 11 is provided inside the fermentation tank 1 corresponding to the lifting and floating assembly 6. The transmission assembly 11 includes a drive gear 22, an outer transmission gear 23, an inner gear ring 24, and a rotating disk 25. The rotating disk 25 is rotatably mounted on the inner wall of the fermentation tank 1 via a sealed bearing and is located below the fixed frame 17. The drive gear 22 is fixedly sleeved on the surface of the driven stirring shaft 7 near the top end. The outer transmission gear 23 is fixedly mounted on the inner side of the fixed frame 17 via a fixed seat. The outer transmission gear 23 meshes with the drive gear 22. The inner gear ring 24 is fixedly mounted on the rotating disk 25. The top of the rotating disk 25, and the inner teeth of the rotating disk 25 mesh with the outer transmission gear 23. The fermentation tank 1 is rotatably installed with an outer stirring assembly 10 that is driven to rotate by the transmission assembly 11. The outer stirring assembly 10 includes a side scraper 26 and a bottom scraper 27. The side scraper 26 is fixedly installed at the bottom of the rotating disk 25. The side of the side scraper 26 is movably attached to the inner wall of the fermentation tank 1. The bottom scraper 27 is shaped like a cross. The bottom scraper 27 is fixedly installed at the bottom end of the side scraper 26. The lower surface of the bottom scraper 27 is in contact with the bottom of the inner wall of the fermentation tank 1.

[0031] In practice, when the driven stirring shaft 7 rotates, it can drive the drive gear 22 to rotate synchronously. Through the step-by-step meshing of the outer transmission gear 23 and the inner gear ring 24, the rotating disk 25 is driven to rotate smoothly. The outer stirring assembly 10 can be driven to run without additional power. The arc-shaped side scraper 26 rotates in contact with the tank wall and can scrape off the viscous material and residual particles attached to the tank wall in real time. The cross-shaped bottom scraper 27 fully covers the bottom area of ​​the tank and can thoroughly turn over the deposited heavy material, thereby solving the problems of material deposition and local overheating in the early stage of fermentation and ensuring the uniform distribution of heat and material in the tank. Example

[0032] refer to Figures 1-5 In this embodiment, the bottom of the driven stirring shaft 7 is provided with a bottom docking groove 28, and the top of the bottom scraper 27 is fixedly installed with a docking shaft 29 corresponding to the bottom docking groove 28. The top end of the docking shaft 29 is movably inserted into the bottom docking groove 28. There are four sets of side scrapers 26, which are arranged in a ring array with the drive shaft 12 as the array center. The side scrapers 26 are set as arc-shaped rods. The inner wall of the rotating disk 25 is movably sleeved on the surface of the driven stirring shaft 7 through a movable sealing assembly.

[0033] In practice, the docking shaft 29 and the bottom docking groove 28 are connected to each other, which can realize the dynamic docking limit between the driven stirring shaft 7 and the bottom scraper 27, improve the linkage stability of the overall stirring structure, and at the same time, it does not affect the up and down floating action of the driven stirring shaft 7. The four sets of arc-shaped side scrapers 26 are arranged in a ring, conforming to the curvature of the tank wall, and the scraping coverage is comprehensive. The movable sealing component at the rotating disk 25 can effectively seal the connection gap, prevent the material from seeping into the transmission structure and causing jamming and wear, thereby improving the operational stability and service life of the device and ensuring the reliability of long-term continuous fermentation operation.

[0034] The working principle of this invention is: During operation, the drive motor 5 and heater 3 are started via control box 2. The drive motor 5 drives the drive shaft 12 to rotate synchronously. The splined drive shaft 12 drives the driven stirring shaft 7 to revolve. When the driven stirring shaft 7 rotates, it drives the top turntable 14 to rotate. The undulating groove 15 and the fixed push roller 16 press against each other, and with the elastic reset of the spring 13, the driven stirring shaft 7 is driven to periodically float up and down along the drive shaft 12, thereby realizing dynamic adjustment of the stirring height to adapt to the viscosity changes of the material throughout the fermentation process and avoid the problems of high viscosity material sedimentation and uneven mixing during the thinning stage. During the revolution of the driven stirring shaft 7, the internal stirring transmission gear 20 meshes with the strip tooth groove 19 of the drive shaft 12, driving the stirring shaft 7 to rotate. The drive shaft 21 and the stirring blade 9 rotate autonomously, achieving a compound stirring of revolution and rotation, effectively dispersing scum and renewing the liquid surface material, thus ensuring smooth gas exchange inside the tank; at the same time, the driven stirring shaft 7 drives the drive gear 22 to rotate, which drives the rotating disk 25 to rotate through the outer drive gear 23 and the inner gear ring 24, driving the arc-shaped side scraper 26 and the cross-shaped bottom scraper 27 to operate synchronously, cleaning the residual material on the tank wall and bottom in real time, completely eliminating the mixing dead zone, thus ensuring uniform mixing, heating and fermentation of the material inside the tank, greatly improving the quality of the fermented product, and the whole machine can achieve multi-structure linkage operation with a single power drive, which is energy-saving, efficient and highly automated, and can be fully adapted to the entire cycle of liquid feed fermentation.

[0035] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A multifunctional integrated liquid feed fermentation device, characterized in that, The fermentation tank (1), the feed inlet (4) and the drive motor (5) are included. The side of the fermentation tank (1) is fixedly installed with a support foot for supporting the fermentation tank (1) at the bottom. The side of the fermentation tank (1) is fixedly installed with a control box (2) and a heater (3). The control box (2) is used to control the heater (3) and the drive motor (5). The feed inlet (4) is located on the side of the fermentation tank (1) near the top. The drive motor (5) is fixedly installed on the top of the fermentation tank (1). A drive shaft (12) is rotatably installed on the top of the inner wall of the fermentation tank (1). A movable shaft is fixedly installed on the top of the drive shaft (12). The top of the movable shaft passes through the fermentation tank (1) and extends to the top of the fermentation tank (1) and is fixedly connected to the output shaft of the drive motor (5). A driven stirring shaft (7) is movably sleeved on the surface of the drive shaft (12). A lifting and floating assembly (6) for controlling the up and down movement of the driven stirring shaft (7) is provided on the top of the driven stirring shaft (7). A connecting assembly (8) is rotatably installed on the side of the driven stirring shaft (7). A stirring blade (9) for mixing materials is fixedly installed on the end face of the connecting assembly (8).

2. The multifunctional integrated liquid feed fermentation device according to claim 1, characterized in that, The lifting and floating assembly (6) includes a spring (13), a turntable (14), a undulating groove (15), a push roller (16), and a fixed frame (17). The fixed frame (17) is fixedly installed on the inner side wall of the fermentation tank (1) near the top. The push roller (16) is fixedly installed on the top of the fixed frame (17) near the inner side. The fixed frame (17) is movably sleeved on the outside of the driven stirring shaft (7). The turntable (14) is fixedly sleeved on the surface of the driven stirring shaft (7) near the top. The undulating groove (15) is opened on the lower surface of the turntable (14). The surface of the push roller (16) is movably connected to the surface of the undulating groove (15). The spring (13) is movably sleeved on the surface of the drive shaft (12) located between the drive shaft and the driven stirring shaft (7).

3. The multifunctional integrated liquid feed fermentation device according to claim 2, characterized in that, The number of the push rollers (16) is two sets, and the two sets of push rollers (16) are arranged in a ring array with the drive shaft (12) as the array center.

4. The multifunctional integrated liquid feed fermentation device according to claim 3, characterized in that, The connecting assembly (8) includes a stirring transmission gear (20) and a transmission shaft (21). A strip groove (18) is provided on the side of the drive shaft (12) corresponding to the connecting assembly (8). A strip tooth groove (19) is provided on one side of the inner wall of the strip groove (18). The transmission shaft (21) is rotatably installed inside the driven stirring shaft (7). One end of the transmission shaft (21) passes through the driven stirring shaft (7) and extends to the outside of the driven stirring shaft (7) and is fixedly connected to the end face of the stirring blade (9). The stirring transmission gear (20) is fixedly installed at one end of the transmission shaft (21) located inside the driven stirring shaft (7). The stirring transmission gear (20) and the strip tooth groove (19) mesh with each other.

5. The multifunctional integrated liquid feed fermentation device according to claim 4, characterized in that, The number of the connecting components (8) is four sets. The four sets of connecting components (8) are arranged in a ring array with the drive shaft (12) as the array center. The number and position of the stirring blades (9) match the number and position of the connecting components (8).

6. The multifunctional integrated liquid feed fermentation device according to claim 5, characterized in that, The drive shaft (12) is designed as a "spline shaft", and the inner wall shape of the driven stirring shaft (7) matches the shape of the drive shaft (12).

7. A multifunctional integrated liquid feed fermentation device according to claim 6, characterized in that, The fermentation tank (1) is equipped with a transmission component (11) at the corresponding lifting and floating component (6) inside, and an outer stirring component (10) is installed inside the fermentation tank (1) to rotate via the transmission component (11).

8. A multifunctional integrated liquid feed fermentation device according to claim 7, characterized in that, The transmission assembly (11) includes a drive gear (22), an outer transmission gear (23), an inner gear ring (24), and a rotating disk (25). The rotating disk (25) is rotatably mounted on the inner wall of the fermentation tank (1) via a sealed bearing and is located below the fixed frame (17). The drive gear (22) is fixedly sleeved on the surface of the driven stirring shaft (7) near the top. The outer transmission gear (23) is fixedly mounted on the inner side of the fixed frame (17) via a fixed seat. The outer transmission gear (23) meshes with the drive gear (22). The inner gear ring (24) is fixedly mounted on the top of the rotating disk (25), and the inner teeth of the rotating disk (25) mesh with the outer transmission gear (23).

9. A multifunctional integrated liquid feed fermentation device according to claim 8, characterized in that, The outer stirring assembly (10) includes a side scraper (26) and a bottom scraper (27). The side scraper (26) is fixedly installed at the bottom of the rotating disk (25). The side of the side scraper (26) is movably attached to the inner wall of the fermentation tank (1). The bottom scraper (27) is shaped like a cross. The bottom scraper (27) is fixedly installed at the bottom end of the side scraper (26). The lower surface of the bottom scraper (27) is in contact with the bottom of the inner wall of the fermentation tank (1).

10. A multifunctional integrated liquid feed fermentation device according to claim 9, characterized in that, The driven stirring shaft (7) has a bottom docking groove (28) at its bottom. The top of the bottom scraper (27) is fixedly installed with a docking shaft (29) corresponding to the bottom docking groove (28). The top of the docking shaft (29) is movably inserted into the bottom docking groove (28). There are four sets of side scrapers (26). The four sets of side scrapers (26) are arranged in a ring array with the drive shaft (12) as the array center. The side scrapers (26) are set as arc rods. The inner wall of the rotating disk (25) is movably sleeved on the surface of the driven stirring shaft (7) through a movable sealing component.

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