Deep seawater enzyme fermentation generator

Abstract

The invention relates to the field of seawater fermentation, and discloses a deep seawater enzyme fermentation generator which comprises a fermentation tank and a stirring motor, the stirring motor is mounted at the center of the top of the fermentation tank, and main ventilation pipes used for being communicated with ventilation equipment are inserted into and connected with the two sides, close to the top end, of the fermentation tank. The stirring shaft is arranged in the fermentation tank, and four turbine stirring blades are fixedly mounted at the bottom end of the stirring shaft; the hollow coupling structure is arranged at the joint of the stirring shaft and the output shaft of the stirring motor, is communicated with the main ventilation pipe and is used for driving the stirring shaft to rotate and ventilating the stirring shaft at the same time; the two groups of hollow ventilation stirring rods are symmetrically arranged on the two sides of the stirring shaft; the turbulent flow ring body is arranged at the position, close to the bottom end, in the fermentation tank and used for generating shearing turbulent flow when raw materials are stirred, and the deep seawater enzyme fermentation generator guarantees full mixing of gas and liquid in all directions through ingenious structural design, so that the fermentation efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the field of seawater fermentation, in particular to a deep seawater enzyme fermentation generator. Background Art

[0002] In the field of biotechnology and marine resource utilization, deep seawater enzyme fermentation is becoming a focus of research and application. Deep seawater is rich in minerals, trace elements, and unique microbial communities. These natural ingredients can provide ideal nutritional support for the growth and metabolism of microorganisms during the enzyme fermentation process. Enzymes, as a type of protein or RNA with catalytic activity, play an indispensable role in many industries such as food, medicine, and environmental protection. Using deep seawater to carry out enzyme fermentation can not only produce enzyme products with unique activity and function, which meets the market demand for high-quality and diversified enzymes, but also is an important practice to deeply explore the value of marine resources, and effectively promote related industries to move towards sustainability.

[0003] However, traditional enzyme fermentation technology has exposed many significant defects when dealing with deep seawater fermentation. Taking the stirring system in traditional fermentation equipment as an example, its operation mode is relatively single, and the stirring of raw materials can only produce axial flow in the same direction. This means that the raw materials in the fermentation tank can only circulate along a specific axis during the stirring process, and it is difficult to form an all-round and multi-angle mixing effect. More importantly, this single flow pattern severely limits the contact opportunities between the internal raw materials and the gas. The gas cannot be fully integrated into the raw material system, and the microorganisms cannot obtain sufficient oxygen for aerobic respiration, so the growth and reproduction rate slows down, and the metabolic activity is greatly reduced, which ultimately makes it difficult to increase the production of enzymes and the quality is difficult to reach the ideal standard. In addition, due to uneven stirring, the fermentation conditions of raw materials in different areas of the fermentation tank are significantly different, which destroys the consistency and stability of the enzyme fermentation process. For this reason, we proposed a deep seawater enzyme fermentation generator. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides a deep seawater enzyme fermentation generator to solve the above-mentioned problems.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a deep seawater enzyme fermentation generator, comprising a fermentation tank and a stirring motor, wherein the stirring motor is installed at the top center of the fermentation tank, and the output shaft of the stirring motor extends to the inside of the fermentation tank, and both sides of the fermentation tank near the top are inserted with main ventilation pipes for connecting ventilation equipment, and the area where the main ventilation pipe is located inside the fermentation tank is horizontal, and further comprises:

[0008] A hollow stirring shaft is arranged inside the fermentation tank, and a four-blade turbine stirring blade is fixedly installed at the bottom end of the stirring shaft for stirring the fermentation raw materials inside the fermentation tank;

[0009] A hollow coupling structure is arranged at the connection between the stirring shaft and the output shaft of the stirring motor and is communicated with the main air pipe. The hollow coupling structure is used for driving the stirring shaft to rotate and simultaneously ventilating into the stirring shaft;

[0010] Two groups of hollow ventilation stirring rods are symmetrically arranged on both sides of the stirring shaft, and the two groups of ventilation stirring rods are communicated with the stirring shaft. The two groups of ventilation stirring rods are used for stirring the seawater fermentation raw materials and simultaneously ventilating into the raw materials;

[0011] A turbulence ring body is arranged near the bottom end inside the fermentation tank for generating shear turbulence when stirring the raw materials.

[0012] Preferably, the hollow coupling structure includes a sealing cylinder, a magnet circular plate, a magnet ring and a fixing column. A sealing cylinder is fixedly connected between the ends of the two main air pipes on both sides of the fermentation tank located inside the fermentation tank, and the sealing cylinder is communicated with the two main air pipes on both sides. The axes of the fermentation tank, the main air pipe, the stirring motor, the stirring shaft and the sealing cylinder are located on the same vertical line. The output shaft of the stirring motor extends into the inside of the sealing cylinder and is fixedly connected with a magnet circular plate. The top end of the stirring shaft extends into the inside of the sealing cylinder and is fixedly connected with a magnet ring. The magnet circular plate and the magnet ring are aligned up and down and magnetically attract each other, and a plurality of groups of fixing columns are fixedly connected at the positions corresponding to the side edges close to each other between the magnet circular plate and the magnet ring.

[0013] Preferably, an air ventilation hollow cavity one is opened inside the stirring shaft, and the air ventilation hollow cavity one corresponding to the top end of the stirring shaft located inside the sealing cylinder is in an open shape. The air ventilation hollow cavity one opened inside the stirring shaft is in a conical shape with a large top and a small bottom.

[0014] Preferably, the end face diameters of the magnet circular plate and the magnet ring are the same and are both smaller than the inner diameter of the sealing cylinder. Limiting ring grooves are respectively opened on the annular inner wall of the sealing cylinder corresponding to the outer ring sides of the magnet circular plate and the magnet ring. Integrated limiting convex rings are fixedly arranged on the outer ring walls of the magnet circular plate and the magnet ring, and the limiting convex rings on the outer circles of the magnet circular plate and the magnet ring are both slidably clamped in the limiting ring grooves.

[0015] Preferably, both ventilation stirring rods on both sides of the stirring shaft are installed in the upper half area of the stirring shaft. An air ventilation hollow cavity two is opened inside the ventilation stirring rod, and the end of the ventilation stirring rod corresponding to connecting the stirring shaft is in an open shape. Open slots are respectively opened on the outer walls of both sides of the stirring shaft corresponding to the positions of connecting the ventilation stirring rods. The open slots are used for communicating the air ventilation hollow cavity one in the stirring shaft with the open slots in the ventilation stirring rods.

[0016] Preferably, the ventilation stirring rod is bent, and the top of the ventilation stirring rod is horizontal and extends downward and obliquely away from one end of the stirring shaft. The ventilation stirring rods on both sides of the stirring shaft are inclined with their bottoms away from each other. Densely distributed ventilation holes are formed on the outer wall of the ventilation stirring rod corresponding to the inclined area, and the bottom end of the ventilation stirring rod is open corresponding to the second ventilation cavity.

[0017] Preferably, vertical connecting shafts in a vertical shape are fixedly connected to the bottoms of the two main ventilation pipes in the fermentation tank. The flow disturbing ring body is fixedly connected to the bottoms of the two vertical connecting shafts. The bottoms of the two ventilation stirring rods are both above the flow disturbing ring body, and the four-blade turbine stirring blades are located inside the flow disturbing ring body.

[0018] Preferably, the flow disturbing ring body is composed of an upper tangential flow circular ring, a lower tangential flow circular ring, and a tangential flow elliptical ring. The upper tangential flow circular ring and the lower tangential flow circular ring are spaced apart vertically and aligned and parallel. The tangential flow elliptical ring is fixedly connected obliquely between the bottom end of one side of the upper tangential flow circular ring and the top end of one side of the lower tangential flow circular ring, and the connection sides of the tangential flow elliptical ring with the upper tangential flow circular ring and the lower tangential flow circular ring are opposite sides. The upper tangential flow circular ring is fixedly connected to the bottoms of the two vertical connecting shafts.

[0019] Preferably, the vertical connecting shafts, the upper tangential flow circular ring, the lower tangential flow circular ring, and the tangential flow elliptical ring are all hollow, and the upper tangential flow circular ring is communicated with the lower tangential flow circular ring and the tangential flow elliptical ring. The top end of the vertical connecting shaft is communicated with the main ventilation pipe, and the bottom end of the vertical connecting shaft is communicated with the upper tangential flow circular ring. Densely distributed small holes are formed on the upper tangential flow circular ring, the lower tangential flow circular ring, and the tangential flow elliptical ring, and the aperture of the small holes on the flow disturbing ring body is smaller than the aperture of the ventilation holes on the ventilation stirring rod.

[0020] (III) Beneficial effects

[0021] Compared with the prior art, the present invention provides a deep-sea water enzyme fermentation generator, which has the following beneficial effects:

[0022] Significantly improve the gas-liquid mixing effect and fermentation efficiency

[0023] Through its ingenious structural design, this deep - sea water enzyme fermentation generator comprehensively ensures the full mixing of gas and liquid, significantly improving the fermentation efficiency. The four - blade turbine stirring blades at the bottom of the stirring shaft and the ventilation stirring rods in the upper part operate in coordination to build a three - dimensional stirring system inside the fermentation tank, enabling the fermentation raw materials at different levels to blend fully. At the same time, the ventilation system composed of the main ventilation pipe, the stirring shaft, the ventilation stirring rods, and the turbulence - generating ring body can evenly disperse the gas in the form of bubbles in the raw materials. During the rising and bursting process of the bubbles, they come into full contact with the liquid, increasing the oxygen transfer efficiency. This efficient gas - liquid mixing method provides sufficient oxygen and a uniform nutrient environment for microorganisms, greatly promoting the growth and metabolism of microorganisms, and thus significantly enhancing the fermentation efficiency of enzymes. Compared with traditional fermentation equipment, it can obtain enzyme products with higher yield and quality in a shorter time.

[0024] Ensure the stable operation of the equipment and smooth ventilation

[0025] The hollow coupling structure in the equipment is ingeniously designed. The magnet circular plate and the magnet circular ring are connected by magnetic attraction and the fixing columns. While driving the rotation of the stirring shaft, it ensures good airtightness inside the sealing cylinder, prevents gas leakage, and ensures the stable operation of the ventilation system. Moreover, the limiting ring groove on the inner wall of the sealing cylinder ring cooperates with the limiting convex rings on the outer circles of the magnet circular plate and the magnet circular ring, making the rotation process more stable, reducing component wear, and extending the service life of the equipment. In addition, the design of the open bottom of the ventilation stirring rod and its internal ventilation hollow cavity avoids the problem of fermentation raw material residue blocking the ventilation channel, ensuring that gas can continuously and smoothly enter the ventilation stirring rod from the main ventilation pipe through the stirring shaft and be discharged into the fermentation raw materials, maintaining a stable oxygen supply during the fermentation process.

[0026] Optimize the hydrodynamic environment to promote uniform mixing

[0027] The bent shape of the ventilation stirring rod and the unique structure of the turbulence - generating ring body optimize the flow field inside the fermentation tank from a hydrodynamic perspective. When the ventilation stirring rod rotates, its special shape can drive the fermentation raw materials to form complex flow trajectories, increasing the turbulence degree of the fluid and making the gas - liquid mixing more sufficient. When the four - blade turbine stirring blades agitate the raw materials, the turbulence - generating ring body generates shear turbulence, further refining the bubbles and enhancing the turbulent effect of the liquid. This optimized hydrodynamic environment not only helps the gas to be evenly distributed in the fermentation raw materials, but also enables various components in the fermentation raw materials, such as minerals in deep - sea water, added nutrients, and microorganisms, to be more evenly dispersed in the tank, providing consistent growth conditions for microorganisms, avoiding local nutrient excess or deficiency, and thus improving the stability of fermentation and the uniformity of product quality. Description of the Drawings

[0028] Figure 1 It is a schematic structural diagram of the present invention;

[0029] Figure 2 Schematic cross-sectional view of the fermenter of the present invention;

[0030] Figure 3 Schematic diagram of the raw material stirring structure of the present invention;

[0031] Figure 4 Schematic cross-sectional view of the main ventilation pipe of the present invention;

[0032] Figure 5 is Figure 4 Partial enlarged view of part A in

[0033] Figure 6 is Figure 4 Partial enlarged view of part B in

[0034] Figure 7 Schematic diagram of the turbulence ring structure of the present invention.

[0035] In the figure: 1, fermenter; 2, main ventilation pipe; 3, stirring motor; 4, stirring shaft; 5, four-blade turbine stirring blade; 6, vertical connecting shaft; 7, turbulence ring body; 8, ventilation stirring rod; 9, ventilation hole; 10, sealing cylinder; 11, magnet circular plate; 12, magnet ring; 13, fixed connecting column; 14, limit ring groove; 15, limit convex ring; 16, ventilation hollow cavity one; 17, ventilation hollow cavity two; 18, opening groove; 19, upper cut-flow circular ring; 20, lower cut-flow circular ring; 21, cut-flow elliptical ring. Specific embodiments

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] Please refer to Figure 1-7 , a deep-sea water enzyme fermentation generator, including a fermenter 1 and a stirring motor 3. The stirring motor 3 is installed at the center of the top of the fermenter 1, and the output shaft of the stirring motor 3 extends into the interior of the fermenter 1. The main ventilation pipes 2 for connecting to ventilation equipment are inserted and connected on both sides of the fermenter 1 near the top, and the area of the main ventilation pipe 2 inside the fermenter 1 is horizontal. It further includes:

[0038] A hollow stirring shaft 4 is arranged inside the fermenter 1, and a four-blade turbine stirring blade 5 is fixedly installed at the bottom end of the stirring shaft 4 for stirring the fermentation raw materials inside the fermenter 1;

[0039] A hollow coupling structure is provided at the connection between the stirring shaft 4 and the output shaft of the stirring motor 3 and is connected to the main ventilation pipe 2. This hollow coupling structure is used to drive the rotation of the stirring shaft 4 while ventilating into the stirring shaft 4.

[0040] Two groups of hollow ventilation stirring rods 8 are symmetrically arranged on both sides of the stirring shaft 4, and the two groups of ventilation stirring rods 8 are connected to the stirring shaft 4. The two groups of ventilation stirring rods 8 are used to stir the seawater fermentation raw materials while ventilating into the raw materials.

[0041] A turbulence ring body 7 is arranged near the bottom inside the fermentation tank 1 and is used to generate shear turbulence when stirring the raw materials.

[0042] The hollow coupling structure includes a sealing cylinder 10, a magnet circular plate 11, a magnet ring 12 and a fixing column 13. A sealing cylinder 10 is fixedly connected between the ends of the two main ventilation pipes 2 on both sides of the fermentation tank 1 located inside the fermentation tank 1, and the sealing cylinder 10 communicates with the two main ventilation pipes 2. The axes of the fermentation tank 1, the main ventilation pipe 2, the stirring motor 3, the stirring shaft 4 and the sealing cylinder 10 are located on the same vertical line. The output shaft of the stirring motor 3 extends into the inside of the sealing cylinder 10 and is fixedly connected with a magnet circular plate 11. The top end of the stirring shaft 4 extends into the inside of the sealing cylinder 10 and is fixedly connected with a magnet ring 12. The magnet circular plate 11 and the magnet ring 12 are aligned up and down and magnetically attract each other, and a plurality of groups of fixing columns 13 are fixedly connected at the positions corresponding to the sides close to each other between the magnet circular plate 11 and the magnet ring 12. When the stirring motor 3 starts to work, its output shaft rotates, driving the magnet circular plate 11 connected thereto to rotate. There is a magnetic attraction between the magnet circular plate 11 and the magnet ring 12, and at the same time, the two are fixedly connected by a plurality of groups of fixing columns 13. When the magnet circular plate 11 rotates, the magnet ring 12 will rotate together with the magnet circular plate 11 under the dual action of magnetic force and the fixing column 13. And the magnet ring 12 is fixed at the top end of the stirring shaft 4, thus driving the stirring shaft 4 to rotate.

[0043] A ventilation hollow cavity one 16 is provided inside the stirring shaft 4, and the ventilation hollow cavity one 16 is open at the top end corresponding to the stirring shaft 4 located inside the sealing cylinder 10. The end of the main ventilation pipe 2 located inside the fermentation tank 1 communicates with the sealing cylinder 10, and the gas first enters the sealing cylinder 10. Since a ventilation hollow cavity one 16 is provided inside the stirring shaft 4 and the ventilation hollow cavity one 16 is open at the top end corresponding to the stirring shaft 4 located inside the sealing cylinder 10, the gas will smoothly enter the inside of the stirring shaft 4. The ventilation hollow cavity one 16 provided inside the stirring shaft 4 is in a tapered shape with a large top and a small bottom, which helps to form a Venturi effect when the gas enters the ventilation hollow cavity one 16, enabling the gas to flow smoothly downward and reducing the resistance during the gas flow process.

[0044] The end face diameters of the magnet circular plate 11 and the magnet ring 12 are the same and are both smaller than the inner diameter of the sealing cylinder 10. Limiting ring grooves 14 are provided on the annular inner wall of the sealing cylinder 10 corresponding to the outer ring sides of the magnet circular plate 11 and the magnet ring 12. Integrated limiting convex rings 15 are fixedly provided on the outer ring walls of the magnet circular plate 11 and the magnet ring 12, and the limiting convex rings 15 on the outer rings of the magnet circular plate 11 and the magnet ring 12 are all slidably clamped in the limiting ring grooves 14 to limit the rotation of the magnet circular plate 11 and the magnet ring 12 in the sealing cylinder 10.

[0045] Both of the ventilation stirring rods 8 on both sides of the stirring shaft 4 are installed in the upper half area of the stirring shaft 4. A ventilation hollow cavity two 17 is provided inside the ventilation stirring rod 8, and the end of the ventilation stirring rod 8 corresponding to connecting the stirring shaft 4 is in an open shape. Open slots 18 are provided at the positions on the outer walls of both sides of the stirring shaft 4 corresponding to connecting the ventilation stirring rods 8. The open slots 18 are used for the ventilation hollow cavity one 16 in the stirring shaft 4 to communicate with the open slots 18 in the ventilation stirring rods 8; the ventilation stirring rods 8 are in a bent shape, and the top of the ventilation stirring rods 8 is horizontal and extends downward and obliquely away from the stirring shaft 4. The ventilation stirring rods 8 on both sides of the stirring shaft 4 are in an inclined shape with the bottoms away from each other. Densely distributed ventilation holes 9 are provided on the outer walls of the ventilation stirring rods 8 corresponding to the inclined areas. The bottom ends of the ventilation stirring rods 8 are in an open shape corresponding to the ventilation hollow cavity two 17. By limiting the height of the ventilation stirring rods 8 and limiting the height of the raw materials when introducing the raw materials into the fermentation generator, the height of the raw materials cannot exceed the horizontal top end of the open slots 18. At the same time, by arranging the ventilation stirring rods 8 in the upper half of the stirring shaft 4, a stirring pattern that echoes up and down with the four-blade turbine stirring blades 5 at the bottom can be formed. The four-blade turbine stirring blades 5 mainly strongly stir the raw materials at the bottom of the fermentation tank, while the ventilation stirring rods 8 are responsible for stirring the raw materials in the middle and upper parts. In this way, the raw materials at different heights in the fermentation tank can be fully stirred and mixed, avoiding the situation of uneven local mixing, thereby improving the uniformity of the raw material mixing in the entire fermentation tank, providing a more consistent growth environment for microorganisms, and being beneficial to the synchronous progress of the enzyme fermentation reaction.

[0046] Optimizing the ventilation path: During the fermentation process, continuous ventilation is required to provide oxygen for microorganisms. The ventilation stirring rods 8 are located in the upper half, so that after the gas enters the stirring shaft from the main ventilation pipe and then reaches the ventilation stirring rods, it can start to be released into the raw materials in the upper and middle parts of the fermentation tank. Such a ventilation path design can enable the gas to have more sufficient time and space to diffuse in the fermentation tank, avoiding the problem that the gas directly rushes to the bottom of the tank quickly and cannot be evenly distributed, and ensuring that microorganisms in all areas of the fermentation tank can obtain sufficient oxygen.

[0047] The function of the bottom end of the ventilation stirring rod 8 being in an open shape

[0048] Avoid internal residue blockage: As you mentioned, the open design at the bottom end of the ventilation stirring rod 8 can effectively prevent raw materials from entering the rod interior through the ventilation holes 9 and causing residue. During the fermentation process, if the bottom end is closed, when the ventilation stirring rod rotates, due to the liquid flow and pressure changes, some raw materials may be pressed into the ventilation stirring rod interior through the ventilation holes 9. Over time, these residual raw materials may accumulate and deteriorate, not only affecting the normal ventilation function of the ventilation stirring rod but also potentially breeding miscellaneous bacteria, which has an adverse impact on the fermentation process. However, the open bottom end allows a small amount of raw materials that enter the rod to return to the fermentation raw materials under the action of gravity and liquid flow, reducing internal residue and ensuring the smoothness of the ventilation system.

[0049] Assist bottom ventilation and stirring: Although the ventilation stirring rod is mainly responsible for stirring and ventilation in the middle and upper parts, the open bottom end enables a part of the gas and liquid to flow out from the bottom end of the rod, which can also play a certain role in assisting ventilation and stirring in the area near the turbulence ring body at the bottom of the fermentation tank. When the four-blade turbine stirring blade 5 stirs the raw materials at the bottom, the gas and liquid flowing out from the bottom end of the ventilation stirring rod can further enhance the turbulence degree in this area, making the raw materials at the bottom mix more fully, and at the same time, it can also provide additional oxygen supply for the microorganisms at the bottom.

[0050] At the bottom of the two main ventilation pipes 2 in the fermentation tank 1, there are vertically fixed connecting vertical connecting shafts 6. The turbulence ring body 7 is fixedly connected to the bottom ends of the two vertical connecting shafts 6. The bottom ends of the two ventilation stirring rods 8 are above the turbulence ring body 7, and the four-blade turbine stirring blade 5 is located inside the turbulence ring body 7.

[0051] The turbulence ring body 7 is composed of an upper tangential flow circular ring 19, a lower tangential flow circular ring 20, and a tangential flow elliptical ring 21. The upper tangential flow circular ring 19 and the lower tangential flow circular ring 20 are spaced apart vertically and aligned parallel. The tangential flow elliptical ring 21 is obliquely fixedly connected between the bottom end of one side of the upper tangential flow circular ring 19 and the top end of one side of the lower tangential flow circular ring 20, and the connecting sides of the tangential flow elliptical ring 21 with the upper tangential flow circular ring 19 and the lower tangential flow circular ring 20 are opposite sides. The upper tangential flow circular ring 19 is fixedly connected to the bottom ends of the two vertical connecting shafts 6; the vertical connecting shafts 6, the upper tangential flow circular ring 19, the lower tangential flow circular ring 20, and the tangential flow elliptical ring 21 are all hollow, and the upper tangential flow circular ring 19 is connected to the lower tangential flow circular ring 20 and the tangential flow elliptical ring 21. The top end of the vertical connecting shaft 6 is connected to the main ventilation pipe 2, and the bottom end of the vertical connecting shaft 6 is connected to the upper tangential flow circular ring 19. Densely distributed fine holes are opened on the upper tangential flow circular ring 19, the lower tangential flow circular ring 20, and the tangential flow elliptical ring 21, and the aperture of the fine holes on the turbulence ring body 7 is smaller than the aperture of the ventilation holes 9 on the ventilation stirring rod 8; when the four-blade turbine stirring blade 5 rotates at high speed at the bottom of the fermentation tank 1, it will drive the fermentation raw materials to form a complex flow field. The turbulence ring body 7 is located in this area, and its unique structure plays a key role in disturbing the flow of the liquid.

[0052] The upper shear flow ring 19 and the lower shear flow ring 20 are arranged in parallel and spaced apart from each other. When the liquid is stirred from the four-blade turbine stirring blade 5 and flows upward, it will first impact the upper shear flow ring 19. The existence of the upper shear flow ring 19 changes the original relatively regular upward path of the liquid, causing the liquid to form local turbulence around it. After passing through the upper shear flow ring 19, part of the liquid will continue to flow upward, while the other part will turn back downward along the outer ring wall of the upper shear flow ring 19. At the same time, the lower shear flow ring 20 acts on the liquid that turns back downward and the liquid that flows directly downward from the four-blade turbine stirring blade 5. The lower shear flow ring 20 changes the flow direction of this part of the liquid, causing it to form turbulence around itself, and interferes and merges with the turbulence around the upper shear flow ring 19, further enhancing the disordered flow state of the liquid.

[0053] The cutting flow elliptical ring 21 is connected to the upper cutting flow circular ring 19 and the lower cutting flow circular ring 20 in an inclined state, and its special shape and position further aggravate the turbulent effect of the liquid. When the liquid flows through the cutting flow elliptical ring 21, due to the special geometric shape of the elliptical ring, the flow velocity and flow direction of the liquid on its surface will change dramatically. The liquid accelerates on one side of the cutting flow elliptical ring 21, while a relatively slow reflow area is formed on the other side. This flow velocity difference causes the liquid to form strong vortices around the cutting flow elliptical ring 21. These vortices interact with the turbulent flow around the upper cutting flow circular ring 19 and the lower cutting flow circular ring 20, so that the liquid around the entire turbulent ring body 7 presents a complex tumbling state.

[0054] In terms of gas, the vertical coupling 6 transports the gas to the turbulent ring 7. The gas is discharged from the densely distributed pores on the turbulent ring 7 and enters the liquid in a tumbling state. Due to the strong tumbling of the liquid, the gas is quickly drawn into a complex flow field after being discharged. The bubbles are constantly broken and dispersed under the impact and vortex of the liquid. The originally large bubbles are split into many tiny bubbles, which greatly increases the contact area between the bubbles and the liquid. At the same time, the tumbling of the liquid causes the bubbles to constantly change their paths during the rising process, prolonging the residence time of the bubbles in the liquid, further promoting the transfer of oxygen from the bubbles to the liquid, greatly improving the gas-liquid contact area and the gas-liquid mixing efficiency, providing more sufficient oxygen for the microorganisms in the fermentation process, and strongly promoting the progress of the enzyme fermentation reaction.

[0055] Working principle: When the device starts, the stirring motor 3 begins to work, and its output shaft rotates, driving the magnet circular plate 11 connected to it to rotate. There is a magnetic attraction between the magnet circular plate 11 and the magnet ring 12, and at the same time, the two are fixedly connected through multiple groups of connecting columns 13. This design not only ensures that the two will not easily separate under the action of magnetic force but also enhances the connection stability to a certain extent. Therefore, when the magnet circular plate 11 rotates, the magnet ring 12 will rotate together with the magnet circular plate 11 under the dual action of magnetic force and the connecting columns 13. The magnet ring 12 is fixed at the top of the stirring shaft 4, thereby driving the stirring shaft 4 to rotate. When the stirring shaft 4 rotates, the four-blade turbine stirring blades 5 at the bottom rotate accordingly, agitating the fermentation raw materials at the bottom of the fermentation tank 1 to make the raw materials such as seawater and organic waste evenly mixed; in the prior art, under the action of the four-blade turbine stirring blades 5, one or more axial circulation flows are usually formed in the stirring tank. When the stirring blades rotate, the blades exert a strong force on the fluid, accelerating the fluid and forming vortices. These vortices stir the fluid from one place in the stirring tank to another place, achieving the effect of mixing and stirring. After obtaining kinetic energy in the impeller area, the fluid is discharged from the blade tip, forming a high-speed jet. These jets form the main circulation flow path in the stirring tank. Directly below the blade of the paddle, the fluid usually flows straight down. Near the root of the blade of the paddle, the fluid may flow into the bottom or conical induction area of the stirring tank in the lower right direction. After the fluid hits the side wall of the stirring tank, part of it will flow upward along the side wall and re-enter the impeller area above the paddle; the other part may flow downward along the side wall of the stirring tank, forming a part of the circulation flow; during the rotation process, strong shear force and centrifugal force can be generated to strongly agitate the fermentation raw materials at the bottom of the fermentation tank 1. On the one hand, it can break the precipitation and stratification phenomena that may occur at the bottom of the raw materials, making the deep seawater, microbial strains, and various nutrients fully mixed; on the other hand, it can increase the radial and axial flow of the liquid, form a stable circulation flow field, and promote the continuous upward movement of the bottom raw materials to fully exchange with the raw materials in the middle and upper parts;

[0056] At the same time, two groups of ventilation stirring rods 8 symmetrically arranged in the upper half area of the stirring shaft 4 will also rotate together with the stirring shaft 4. At the same time, the inclined parts of the two groups of ventilation stirring rods 8 will contact the raw materials mixed with seawater, and can stir the raw materials in the middle and upper parts of the fermentation tank 1 in all directions and at multiple angles. It can not only drive the upper raw materials downward to converge with the rising raw materials at the bottom but also make the raw materials at different levels form complex and efficient convection, significantly improving the uniformity of raw material mixing and creating a good fluid environment for full gas-liquid contact. While the stirring components are operating, the ventilation process is also carried out synchronously. The external ventilation equipment transports gas (usually air or a mixed gas containing a specific proportion of oxygen) into the fermentation tank 1 through the main ventilation pipe 2 according to the set flow rate and pressure. The end of the main ventilation pipe 2 located inside the fermentation tank 1 is connected to the sealing cylinder 10, and the gas first enters the sealing cylinder 10.

[0057] Since a ventilation hollow cavity 16 is provided inside the stirring shaft 4, and the ventilation hollow cavity 16 is open at the top corresponding to the stirring shaft 4 inside the sealing cylinder 10, and it is in a conical shape with a larger upper part and a smaller lower part, which helps to form a Venturi effect when gas enters the ventilation hollow cavity 16, enabling the gas to flow smoothly downward and reducing the resistance during the gas flow process.

[0058] When the gas flows downward in the ventilation hollow cavity 16, it will reach the opening grooves 18 provided on the outer walls on both sides of the stirring shaft 4. A ventilation hollow cavity 17 is provided inside the ventilation stirring rod 8, and its end corresponding to the connection with the stirring shaft 4 is open, so that the gas can smoothly enter the ventilation hollow cavity 17 from the ventilation hollow cavity 16 through the opening grooves 18.

[0059] The top of the ventilation stirring rod 8 is horizontal and extends downward and obliquely away from the stirring shaft 4, and ventilation holes 9 are densely distributed on the outer wall of its inclined area. As the ventilation stirring rod 8 rotates, the gas is ejected from the ventilation holes 9 at a high speed, forming a large number of tiny and evenly distributed bubbles in the fermentation raw materials. During the rising process of these bubbles, they come into full contact with the surrounding liquid, and through the surface renewal and diffusion of the bubbles, oxygen is efficiently transferred to the fermentation raw materials. At the same time, the disturbance generated by the rising and bursting of the bubbles further enhances the turbulence degree of the liquid, promoting gas-liquid mixing.

[0060] In addition, the vertical vertical connection shaft 6 fixedly connected to the bottom of the main ventilation pipe 2 also participates in the ventilation process. The gas enters the vertical connection shaft 6 from the main ventilation pipe 2. Since the vertical connection shaft 6, the upper tangential flow ring 19, the lower tangential flow ring 20, and the tangential flow elliptical ring 21 are all hollow and communicate with each other, the gas can smoothly enter the turbulence ring body 7. The turbulence ring body 7 is provided with densely distributed fine holes, and the aperture of its fine holes is smaller than the aperture of the ventilation holes 9 on the ventilation stirring rod 8. When the four-blade turbine stirring blade 5 stirs the fermentation raw materials, it will drive the liquid to flow around the turbulence ring body 7. After the gas is discharged from the fine holes of the turbulence ring body 7, it will interact with the flowing liquid to generate shear turbulence. This shear turbulence can increase the turbulence degree of the liquid, make the fermentation raw materials mix more fully, and also helps the gas to disperse better at the bottom of the fermentation tank, providing sufficient oxygen for the microorganisms at the bottom.

[0061] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and deformations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A deep seawater enzyme fermentation generator, comprising a fermentation tank (1) and a stirring motor (3), wherein the stirring motor (3) is installed at the top center of the fermentation tank (1), and the output shaft of the stirring motor (3) extends to the inside of the fermentation tank (1), characterized in that: The fermentation tank (1) has main ventilation pipes (2) inserted and connected to the ventilation equipment on both sides near the top, and the area where the main ventilation pipes (2) are located inside the fermentation tank (1) is horizontal. The fermentation tank (1) also includes: A hollow stirring shaft (4) is arranged inside the fermentation tank (1), and a four-blade turbine stirring blade (5) is fixedly mounted on the bottom end of the stirring shaft (4) for stirring the fermentation raw materials inside the fermentation tank (1); A hollow coupling structure is arranged at the connection between the stirring shaft (4) and the output shaft of the stirring motor (3) and is connected to the main ventilation pipe (2), and the hollow coupling structure is used to drive the stirring shaft (4) to rotate and ventilate the stirring shaft (4) at the same time; Two sets of hollow ventilation stirring rods (8) are symmetrically arranged on both sides of the stirring shaft (4), and the two sets of ventilation stirring rods (8) are connected to the stirring shaft (4). The two sets of ventilation stirring rods (8) are used to stir the seawater fermentation raw materials and ventilate the raw materials at the same time; The turbulence ring (7) is arranged inside the fermentation tank (1) near the bottom end and is used to generate shear turbulence when stirring the raw materials.

2. A deep seawater enzyme fermentation generator according to claim 1, characterized in that: The hollow coupling structure comprises a sealing cylinder (10), a magnet plate (11), a magnet ring (12) and a connecting column (13). The sealing cylinder (10) is fixedly connected between the ends of the main ventilation pipes (2) on both sides of the fermenter (1) and located inside the fermenter (1), and the sealing cylinder (10) is communicated with the main ventilation pipes (2) on both sides. The axes of the fermenter (1), the main ventilation pipes (2), the stirring motor (3), the stirring shaft (4) and the sealing cylinder (10) are located on the same vertical line. The output shaft of the stirring motor (3) extends into the interior of the sealing cylinder (10) and is fixedly connected to the magnet plate (11). The top end of the stirring shaft (4) extends into the interior of the sealing cylinder (10) and is fixedly connected to the magnet ring (12). The magnet plate (11) and the magnet ring (12) are aligned up and down and magnetically attracted to each other. A plurality of groups of connecting columns (13) are fixedly connected to the positions corresponding to the sides between the magnet plate (11) and the magnet ring (12).

3. A deep seawater enzyme fermentation generator according to claim 2, characterized in that: A ventilating hollow cavity (16) is provided inside the stirring shaft (4), and the ventilating hollow cavity (16) is open at the top end of the stirring shaft (4) located inside the sealing cylinder (10), and the ventilating hollow cavity (16) provided inside the stirring shaft (4) is in a conical shape that is larger at the top and smaller at the bottom.

4. A deep seawater enzyme fermentation generator according to claim 3, characterized in that: The end faces of the magnet plate (11) and the magnet ring (12) have the same diameter and are smaller than the inner diameter of the sealing cylinder (10); a limiting annular groove (14) is provided on the annular inner wall of the sealing cylinder (10) corresponding to the outer ring sides of the magnet plate (11) and the magnet ring (12); the outer ring walls of the magnet plate (11) and the magnet ring (12) are fixed with an integrated limiting convex ring (15); and the limiting convex rings (15) on the outer rings of the magnet plate (11) and the magnet ring (12) are slidably engaged in the limiting annular groove (14).

5. A deep seawater enzyme fermentation generator according to claim 4, characterized in that: The ventilation stirring rods (8) on both sides of the stirring shaft (4) are installed on the upper half of the stirring shaft (4); a ventilation hollow cavity 2 (17) is provided inside the ventilation stirring rod (8); and the end of the ventilation stirring rod (8) corresponding to the connection with the stirring shaft (4) is open; and the outer walls on both sides of the stirring shaft (4) are provided with open grooves (18) at positions corresponding to the connection with the ventilation stirring rods (8); the open grooves (18) are used to connect the ventilation hollow cavity 1 (16) in the stirring shaft (4) with the open grooves (18) in the ventilation stirring rods (8).

6. A deep seawater enzyme fermentation generator according to claim 5, characterized in that: The ventilation stirring rod (8) is in a bent shape, and the top of the ventilation stirring rod (8) is horizontal and extends downwardly in a bend at one end away from the stirring shaft (4). The ventilation stirring rods (8) on both sides of the stirring shaft (4) are in an inclined shape with their bottom ends away from each other. Densely distributed ventilation holes (9) are provided on the outer wall of the ventilation stirring rod (8) corresponding to the inclined area, and the ventilation hollow cavity 2 (17) corresponding to the bottom end of the ventilation stirring rod (8) is open.

7. A deep seawater enzyme fermentation generator according to claim 6, characterized in that: The bottoms of the two sets of main ventilation pipes (2) in the fermentation tank (1) are fixedly connected with vertical connecting shafts (6), the flow disturbance ring body (7) is fixedly connected to the bottom ends of the two sets of vertical connecting shafts (6), the bottom ends of the two sets of ventilation stirring rods (8) are both above the flow disturbance ring body (7), and the four-blade turbine stirring blade (5) is located inside the flow disturbance ring body (7).

8. A deep seawater enzyme fermentation generator according to claim 7, characterized in that: The spoiler ring (7) is composed of an upper shearing ring (19), a lower shearing ring (20) and a shearing elliptical ring (21); the upper shearing ring (19) and the lower shearing ring (20) are spaced apart from each other and aligned in parallel; the shearing elliptical ring (21) is fixedly connected between the bottom end of one side of the upper shearing ring (19) and the top end of one side of the lower shearing ring (20) in an inclined manner; and the shearing elliptical ring (21) is opposite to the connection side of the upper shearing ring (19) and the lower shearing ring (20); and the upper shearing ring (19) is fixedly connected to the bottom ends of the two sets of vertical connecting shafts (6).

9. A deep seawater enzyme fermentation generator according to claim 8, characterized in that: The upper shear flow ring (19), the lower shear flow ring (20) and the shear flow elliptical ring (21) of the vertical connecting shaft (6) are all hollow, and the upper shear flow ring (19) is connected to the lower shear flow ring (20) and the shear flow elliptical ring (21). The top end of the vertical connecting shaft (6) is connected to the main ventilation pipe (2), and the bottom end of the vertical connecting shaft (6) is connected to the upper shear flow ring (19). The upper shear flow ring (19), the lower shear flow ring (20) and the shear flow elliptical ring (21) are all provided with densely distributed fine holes, and the aperture of the fine holes on the spoiler ring body (7) is smaller than the aperture of the ventilation hole (9) on the ventilation stirring rod (8).

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