CN118755556A - A self-priming multi-stage fermentation tank - Google Patents

Abstract

The invention relates to the technical field of fermentation tanks, and discloses a self-priming multistage fermentation tank, which comprises a tank body, stirring blades and a driving shaft, wherein the stirring blades are provided with an air inlet component, sterile air is sucked into the tank body through the air inlet component when the stirring blades rotate, the self-priming multistage fermentation tank also comprises an auxiliary stirring component which is arranged on the driving shaft, the auxiliary stirring component comprises a stirring part and a driving component, the stirring part is connected with the driving shaft and can synchronously rotate along with the driving shaft, the stirring part can rotate, the driving component is connected between the driving shaft and the stirring part, the driving component drives the stirring part to rotate, and the driving shaft is provided with a power component, and drives the driving shaft to rotate through the power component. According to the invention, in the whole use process, under the action of the auxiliary stirring assembly, the stirring range can be effectively enlarged, so that the stirring efficiency can be greatly improved, and therefore, the medicament can be rapidly dispersed when a large amount of fermentation medicament is thrown in at one time, and the stirring efficiency and stirring quality are ensured.

Description

A self-priming multi-stage fermentation tank

Technical Field

The invention relates to the technical field of fermentation tanks, and more specifically to a self-priming multi-stage fermentation tank.

Background Art

A self-priming fermenter is a special type of fermentation equipment, commonly used in workplaces that require biological fermentation, such as cosmetics manufacturing. It uses a mechanical stirring device to achieve air inhalation and mixing of the fermentation liquid. This type of fermenter is characterized by a stirrer with a central air intake port. When the stirrer rotates, the blades discharge the liquid to form a vacuum, thereby inhaling air outside the tank and fully mixing the air with the fermentation liquid. This design increases the dissolution rate of oxygen in the fermentation liquid, making the dissolved oxygen coefficient higher than that of a general fermenter under the same air flow conditions. If multiple fermenters are connected in series, it can be called a self-priming multi-stage fermenter, which can achieve more fermentation functions.

However, in actual use of the above-mentioned self-priming multi-stage fermentation tank, its mechanical stirring device mainly stirs through a single impeller. Under this structure, due to the limited volume of the impeller and the fact that it is in a fixed position inside the fermentation tank after installation, the stirring method is relatively simple, and the added solvent cannot be quickly mixed with the fermentation liquid, resulting in low mixing efficiency. Overall, it still has certain defects in use.

Summary of the invention

In order to overcome the above defects of the prior art, the present invention provides a self-priming multi-stage fermentation tank to solve the problem of low stirring efficiency caused by only a single impeller stirring inside the existing self-priming multi-stage fermentation tank in the above background technology.

The present invention provides the following technical solution: a self-priming multi-stage fermentation tank, comprising a tank body, a stirring blade and a driving shaft, wherein the stirring blade is rotatably arranged in the tank body, the driving shaft is rotatably installed in the tank body, and the stirring blade is fixedly installed at the bottom end of the driving shaft, the stirring blade is equipped with an air intake assembly, and when the stirring blade rotates, sterile air is sucked into the tank body through the air intake assembly, and also includes an auxiliary stirring assembly, which is installed on the driving shaft, the auxiliary stirring assembly includes a stirring part and a driving assembly, the stirring part is connected to the driving shaft, and can rotate synchronously with the driving shaft, and the stirring part itself can rotate at the same time, the driving assembly is connected between the driving shaft and the stirring part, and the stirring part itself is driven to rotate by the driving assembly, the driving shaft is equipped with a power assembly, and the driving shaft is driven to rotate by the power assembly.

Furthermore, the stirring part includes a stirring frame, the driving component is connected between the driving shaft and the stirring frame, and the stirring frame is rotatably mounted on the surface of the driving shaft through the driving component, and the axis of the stirring frame rotating shaft is staggered with the axis of the driving shaft.

Furthermore, the stirring part also includes a first cotyledon, which is a cross-flow fan blade and is rotatably installed in the middle of the stirring frame. At the same time, the axis of the rotating shaft of the first cotyledon and the axis of the rotating shaft of the stirring frame are staggered.

Furthermore, the driving assembly includes a fixed bevel gear, a rotating bevel gear and a mounting frame. The fixed bevel gear is fixedly installed inside the tank body, and the fixed bevel gear is coaxially arranged with the driving shaft. The mounting frame is fixedly installed on the surface of the driving shaft. The rotating bevel gear is rotatably installed in the middle of the mounting frame, and the rotating bevel gear is meshed with the fixed bevel gear. At the same time, the rotating shaft of the rotating bevel gear is coaxially connected with the rotating shaft of the stirring part, and can drive them to rotate synchronously.

Furthermore, the mounting frame is box-shaped, and covers the fixed bevel gear and the rotating bevel gear. A mounting shaft is fixedly installed inside the tank body, the mounting shaft sleeve is arranged on the surface of the driving shaft, and the driving shaft can rotate in the middle of the mounting shaft. The bottom end of the mounting shaft passes through the mounting frame and is fixedly connected to the fixed bevel gear, and the mounting shaft and the mounting frame are in a sealed rotating connection.

Furthermore, the power component includes a motor and a transmission assembly. The motor is fixedly installed on the top of the tank body. The transmission assembly is connected between the motor output shaft and the drive shaft. The motor drives the drive shaft to reciprocate under the action of the transmission assembly.

Furthermore, the transmission assembly includes a transmission gear, a rack, a crankshaft, a first connecting rod and a protective cover. The transmission gear is fixedly mounted on the surface of the drive shaft, the top of the tank body is fixedly mounted on the guide rail, the rack is slidably mounted on the guide rail, the crankshaft is rotatably mounted on the top of the tank body, and the rotating shaft of the crankshaft is coaxially connected to the output shaft of the motor and can rotate synchronously with it. One end of the first connecting rod is rotatably connected to the crankshaft, and the other end is rotatably connected to the surface of the rack. The protective cover is detachably fixedly connected to the top of the tank body by bolts, and the protective cover covers the transmission gear, rack, crankshaft, first connecting rod and guide rail.

Furthermore, it also includes an oscillation component, which includes an oscillation ring. The oscillation ring is installed in the tank body, and the oscillation ring can slide along the axis of the drive shaft. A linkage component is connected between the oscillation ring and the drive shaft, and the oscillation ring can slide up and down inside the tank body through the linkage component.

Furthermore, the linkage assembly includes a threaded sleeve and a guide block, the oscillation ring includes an outer ring, an inner ring, a second connecting rod and a second co-leaf, the threaded sleeve is fixedly mounted on the surface of the drive shaft, the guide block is fixedly mounted on the inner wall of the tank body, a sliding groove is provided on the surface of the outer ring, and the outer ring slides with the guide block through the sliding groove, the second connecting rod is fixedly connected between the inner ring and the outer ring, the second co-leaf is a cross-flow fan blade, and the second co-leaf is rotatably mounted on the surface of the second connecting rod, and the inner ring thread is sleeved on the surface of the threaded sleeve.

Furthermore, the air intake assembly includes an air intake channel, an air supply pipe, a distribution chamber and an air outlet. The air intake channel is arranged in the middle of the driving shaft, the air supply pipe is rotatably connected and communicated with the top end of the driving shaft, the distribution chamber is arranged inside the stirring blade, and the distribution chamber is communicated with the air intake channel, and the air outlet is opened on the side of the stirring blade, and the air outlet is communicated with the distribution chamber.

Technical effects and advantages of the present invention:

1. In the whole use process of the present invention, under the action of the auxiliary stirring component, the stirring range can be effectively expanded, thereby greatly improving the stirring efficiency. In this way, when a large amount of fermentation agent is added at one time, the agent can be quickly dispersed, ensuring the stirring efficiency and stirring quality.

2. In the present invention, under the action of the driving component, the stirring part in the auxiliary stirring component can also flip itself, which can make the fermentation solvent inside the fermentation tank tumble up and down, so that there are more turbulence inside the fermentation tank, which can further disperse the air and the agent quickly, and further improve the stirring efficiency and stirring effect.

3. During the operation of the present invention, the oscillation component will be synchronously driven to make the reagent inside the fermentation tank surge up and down, which will reduce the load of the driving component and improve the stirring efficiency again, so that the solvent inside the entire fermentation tank can be quickly and evenly distributed, ensuring a good fermentation effect.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of a three-dimensional structure of the present invention;

FIG2 is a schematic diagram of the internal structure of the present invention from a first viewing angle;

FIG3 is an enlarged structural schematic diagram of point A in FIG2 of the present invention;

FIG4 is a schematic diagram of the internal structure of the present invention from a second viewing angle;

FIG5 is an enlarged schematic diagram of the structure at B in FIG4 of the present invention;

FIG6 is an enlarged schematic diagram of the structure at C in FIG4 of the present invention;

FIG7 is a schematic diagram of the enlarged structure of point D in FIG4 of the present invention;

FIG. 8 is a schematic diagram of the stirring frame flipping of the present invention.

The accompanying drawings are marked as follows: 1. tank body; 101. reaction tank; 102. sealing cover; 103. feeding port; 104. sealing plug; 105. discharge pipe; 2. stirring blade; 3. driving shaft; 4. stirring frame; 5. first cotyledon; 6. fixed bevel gear; 7. rotating bevel gear; 8. mounting frame; 9. mounting shaft; 10. motor; 11. transmission gear; 12. rack; 13. crankshaft; 14. first connecting rod; 15. protective cover; 16. guide rail; 17. oscillation ring; 1701. inner ring; 1702. outer ring; 1703. second connecting rod; 1704. second cotyledon; 18. threaded sleeve; 19. guide block; 20. air inlet channel; 21. air supply pipe; 22. distribution chamber; 23. air outlet.

DETAILED DESCRIPTION

The present invention is further described below in conjunction with specific embodiments. However, people familiar with the art should understand that the detailed description given here in conjunction with the drawings is for better explanation, and the structure of the present invention necessarily exceeds these limited embodiments. For some equivalent replacement schemes or common means, they are no longer described in detail herein, but still belong to the scope of protection of the present application.

Figures 1-8 are the best embodiments of the present invention, and the present invention will be further described below in conjunction with Figures 1-8.

A self-priming multi-stage fermentation tank comprises a tank body 1, a stirring blade 2 and a driving shaft 3, wherein the stirring blade 2 is rotatably arranged in the tank body 1, the driving shaft 3 is rotatably installed in the tank body 1, and the stirring blade 2 is fixedly installed at the bottom end of the driving shaft 3, the stirring blade 2 is equipped with an air intake assembly, and when the stirring blade 2 rotates, sterile air is sucked into the tank body 1 through the air intake assembly, and an auxiliary stirring assembly is also included, which is installed on the driving shaft 3. The auxiliary stirring assembly comprises a stirring part and a driving assembly, the stirring part is connected to the driving shaft 3, and can rotate synchronously with the driving shaft 3, and the stirring part itself can rotate at the same time, the driving assembly is connected between the driving shaft 3 and the stirring part, and the stirring part itself is driven to rotate by the driving assembly, the driving shaft 3 is equipped with a power assembly, and the driving shaft 3 is driven to rotate by the power assembly.

The tank body 1 includes a reaction tank 101 and a sealing cover 102. The sealing cover 102 is detachably fixed to the opening of the reaction tank 101 by bolts. A feeding port 103 is provided on the side of the reaction tank 101. The feeding port 103 is equipped with a sealing plug 104. The bottom of the reaction tank 101 is connected to a discharge pipe 105.

When in use, it is only necessary to pour the fermentation raw materials that need to react into the tank body 1 from the feeding port 103, and then drive the drive shaft 3 to rotate through the power component, and the drive shaft 3 will drive the stirring blade 2 to rotate. When the stirring blade 2 rotates, a vacuum will be formed in the middle of the fermentation liquid. The vacuum will inhale sterile air from the outside through the air intake component, so that it is mixed with the fermentation solution to play a role in assisting fermentation. Among them, when the drive shaft 3 rotates, it will also drive the auxiliary stirring component to operate, thereby expanding the stirring range, and the auxiliary stirring component will also drive its stirring part to automatically flip through the driving component to enhance the stirring effect.

The stirring part includes a stirring frame 4, and the driving component is connected between the driving shaft 3 and the stirring frame 4, and the stirring frame 4 is rotatably installed on the surface of the driving shaft 3 through the driving component. At the same time, the axis of the stirring frame 4 and the axis of the driving shaft 3 are staggered. In this way, the rotation of the driving shaft 3 will drive the stirring frame 4 to rotate synchronously, thereby expanding the stirring range.

The stirring part also includes a first cotyledon 5, which is a cross-flow fan blade and is rotatably installed in the middle of the stirring frame 4. At the same time, the axis of the rotating shaft of the first cotyledon 5 and the axis of the rotating shaft of the stirring frame 4 are staggered. In this way, when the stirring frame 4 rotates, it will drive the first cotyledon 5 to rotate synchronously, and the first cotyledon 5 will produce self-rotation under the reaction force of the solvent inside the fermentation tank, thereby further enhancing the tumbling effect.

The driving assembly includes a fixed bevel gear 6, a rotating bevel gear 7 and a mounting frame 8. The fixed bevel gear 6 is fixedly installed inside the tank body 1, and the fixed bevel gear 6 is coaxially arranged with the driving shaft 3. The mounting frame 8 is fixedly installed on the surface of the driving shaft 3. The rotating bevel gear 7 is rotatably installed in the middle of the mounting frame 8, and the rotating bevel gear 7 is meshed with the fixed bevel gear 6. At the same time, the rotating shaft of the rotating bevel gear 7 is coaxially connected with the rotating shaft of the stirring part, and can drive them to rotate synchronously.

In this way, when the driving shaft 3 rotates, the mounting frame 8 will also be driven to rotate. When the stirring frame 4 follows the driving shaft 3 to rotate, it will synchronously drive the rotating bevel gear 7 to rotate. Since the rotating bevel gear 7 is meshed with the fixed bevel gear 6, the rotating bevel gear 7 will rotate on its own, thereby driving the stirring frame 4 to synchronously rotate around the rotating shaft of the rotating bevel gear 7, realizing the up and down flipping of the stirring frame 4, thereby driving the fermentation solution inside the tank body 1 to roll up and down, thereby promoting the fermentation.

The mounting frame 8 is box-shaped, and the mounting frame 8 covers the fixed bevel gear 6 and the rotating bevel gear 7 to play a protective role. A mounting shaft 9 is fixedly installed inside the tank body 1. The mounting shaft 9 is sleeved on the surface of the driving shaft 3, and the driving shaft 3 can rotate in the middle of the mounting shaft 9. The bottom end of the mounting shaft 9 penetrates into the mounting frame 8 and is fixedly connected to the fixed bevel gear 6, and the mounting shaft 9 and the mounting frame 8 are in a sealed rotation connection, so that the fixed bevel gear 6 is limited.

The power component includes a motor 10 and a transmission assembly. The motor 10 is fixedly installed on the top of the tank body 1. The transmission assembly is connected between the output shaft of the motor 10 and the drive shaft 3. The motor 10 drives the drive shaft 3 to reciprocate under the action of the transmission assembly. In this way, you only need to start the motor 10, and the motor 10 will drive the drive shaft 3 to reciprocate through the transmission assembly.

The transmission assembly includes a transmission gear 11, a rack 12, a crankshaft 13, a first connecting rod 14 and a protective cover 15. The transmission gear 11 is fixedly mounted on the surface of the drive shaft 3, the top of the tank body 1 is fixedly mounted on the guide rail 16, the rack 12 is slidably mounted on the guide rail 16, the crankshaft 13 is rotatably mounted on the top of the tank body 1, and the rotating shaft of the crankshaft 13 is coaxially connected to the output shaft of the motor 10 and can rotate synchronously with it, one end of the first connecting rod 14 is rotatably connected to the crankshaft 13, and the other end is rotatably connected to the surface of the rack 12, the protective cover 15 is detachably fixedly connected to the top of the tank body 1 by bolts, and the protective cover 15 covers the transmission gear 11, the rack 12, the crankshaft 13, the first connecting rod 14 and the guide rail 16. In this way, after the motor 10 is started, it will drive the crankshaft 13 to rotate, and the crankshaft 13 will pull the rack 12 to slide on the guide rail 16 through the first connecting rod 14, the sliding of the rack 12 will drive the transmission gear 11 to rotate, and the transmission gear 11 will drive the drive shaft 3 to rotate.

Furthermore, the entire fermentation tank also includes an oscillation assembly, which includes an oscillation ring 17, which is installed in the tank body 1 and can slide along the axis direction of the drive shaft 3. A linkage assembly is connected between the oscillation ring 17 and the drive shaft 3, and the oscillation ring 17 can slide up and down inside the tank body 1 through the linkage assembly. In this way, the rotation of the drive shaft 3 will drive the oscillation ring 17 to slide up and down through the linkage assembly, thereby promoting the up and down surging of the fermentation solvent inside the fermentation tank.

The linkage assembly includes a threaded sleeve 18 and a guide block 19. The oscillation ring 17 includes an outer ring 1702, an inner ring 1701, a second connecting rod 1703 and a second cotyledon 1704. The threaded sleeve 18 is fixedly mounted on the surface of the drive shaft 3. The guide block 19 is fixedly mounted on the inner wall of the tank body 1. A sliding groove is provided on the surface of the outer ring 1702, and the outer ring 1702 slides with the guide block 19 through the sliding groove. The second connecting rod 1703 is fixedly connected between the inner ring 1701 and the outer ring 1702. The second cotyledon 1704 is a cross-flow fan blade, and the second cotyledon 1704 is rotatably mounted on the surface of the second connecting rod 1703. The inner ring 1701 is threadedly sleeved on the surface of the threaded sleeve 18.

In this way, the rotation of the driving shaft 3 will drive the threaded sleeve 18 to rotate synchronously, and the threaded sleeve 18 will drive the inner ring 1701 to move along the axial direction of the threaded sleeve 18. Since the driving shaft 3 rotates reciprocatingly, the inner ring 1701 will be in a reciprocating sliding state. Moreover, when the inner ring 1701 slides, it will also drive the outer ring 1702 to slide through the second connecting rod 1703, thereby driving the entire oscillation ring 17 to move reciprocatingly up and down, realizing the oscillation and surging effect.

The air intake assembly includes an air intake channel 20, an air supply pipe 21, a distribution chamber 22 and an air outlet 23. The air intake channel 20 is arranged in the middle of the driving shaft 3, the air supply pipe 21 is rotatably connected and communicated with the top end of the driving shaft 3, the distribution chamber 22 is arranged inside the stirring blade 2, and the distribution chamber 22 is communicated with the air intake channel 20, and the air outlet 23 is opened on the side of the stirring blade 2, and the air outlet 23 is communicated with the distribution chamber 22. In this way, when the stirring blade 2 rotates to form a vacuum in the middle of the fermentation liquid, the vacuum will inhale external sterile air from the air outlet 23, the distribution chamber 22, the air intake channel 20 and the air supply pipe 21.

Therefore, the complete use process is that first, the fermentation raw materials that need to react are poured into the tank body 1 from the feeding port 103, and then the motor 10 is started. The motor 10 will drive the crankshaft 13 to rotate, and the crankshaft 13 will pull the rack 12 to slide on the guide rail 16 through the first connecting rod 14. The sliding of the rack 12 will drive the transmission gear 11 to rotate, and the transmission gear 11 will drive the drive shaft 3 to rotate, and the drive shaft 3 will drive the stirring blade 2 to rotate. When the stirring blade 2 rotates, a vacuum will be formed in the middle of the fermentation liquid. The vacuum will inhale the external sterile air from the air outlet 23, the distribution chamber 22, the air inlet channel 20 and the air supply pipe 21, so that it is mixed with the fermentation solution to play a role in assisting fermentation.

When the driving shaft 3 rotates, it will also drive the mounting frame 8 to rotate, and then drive the stirring frame 4 to rotate synchronously, so as to achieve a large-scale stirring inside the tank body 1. When the stirring frame 4 follows the driving shaft 3 to rotate, it will synchronously drive the rotating bevel gear 7 to rotate. Since the rotating bevel gear 7 is meshed with the fixed bevel gear 6, the rotating bevel gear 7 will rotate on its own, thereby driving the stirring frame 4 to synchronously rotate around the rotating shaft of the rotating bevel gear 7, so as to achieve the up and down flipping of the stirring frame 4, thereby driving the fermentation solution inside the tank body 1 to roll up and down, thereby promoting the fermentation. In this process, the stirring frame 4 will also drive the first cotyledon 5 to rotate. When the first cotyledon 5 is subjected to the reaction force of the internal fermentation solution, it will also rotate on its own, thereby further promoting the rolling of the fermentation liquid.

Moreover, when the driving shaft 3 rotates, it will also drive the threaded sleeve 18 to rotate synchronously, and the threaded sleeve 18 will drive the inner ring 1701 to move along the axial direction of the threaded sleeve 18. Since the driving shaft 3 rotates reciprocatingly, the inner ring 1701 will be in a reciprocating sliding state. Moreover, when the inner ring 1701 slides, it will also drive the outer ring 1702 to slide through the second connecting rod 1703, thereby driving the entire oscillation ring 17 to move back and forth up and down, realizing the oscillation and surging effect, and further strengthening the turbulence of the fermentation solution inside the tank body 1, thereby enhancing the stirring effect.

In the above steps, multiple fermentation tanks can be connected in series to form multi-stage fermentation to meet more diverse fermentation needs.

It should be noted that after the rack 12 slides a whole length, the number of circles driven by the transmission gear 11 to rotate the threaded sleeve 18 will just drive the inner ring 1701 to move once along the stroke of the threaded groove on the threaded sleeve 18. In this way, the action can be ensured to be continuous and the whole equipment can operate stably.

In summary, during the entire use process, under the action of the auxiliary stirring component, the stirring range can be effectively expanded, thereby greatly improving the stirring efficiency. In this way, when a large amount of fermentation agent is added at one time, the agent can be quickly dispersed to ensure the stirring efficiency and stirring quality.

Moreover, under the action of the driving component, the stirring part in the auxiliary stirring component can also flip itself, which will make the fermentation solvent inside the fermentation tank tumble up and down, so that there are more turbulence inside the fermentation tank, which can further disperse the air and the agent quickly, and further improve the stirring efficiency and stirring effect.

At the same time, during the operation, the oscillation component will be driven synchronously to make the reagent inside the fermentation tank surge up and down, which will reduce the load of the driving component and improve the stirring efficiency again, so that the solvent inside the entire fermentation tank can be quickly and evenly distributed, ensuring a good fermentation effect.

The above is only a preferred embodiment of the present invention, and does not limit the present invention in other forms. Any technician familiar with the profession may use the above disclosed technical content to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention without departing from the technical solution of the present invention still belongs to the protection scope of the technical solution of the present invention.

Claims (10)

1. A self-priming multi-stage fermentation tank, comprising a tank body (1), a stirring blade (2) and a driving shaft (3), wherein the stirring blade (2) is rotatably arranged in the tank body (1), the driving shaft (3) is rotatably arranged in the tank body (1), and the stirring blade (2) is fixedly arranged at the bottom end of the driving shaft (3), and the stirring blade (2) is provided with an air intake assembly, and when the stirring blade (2) rotates, sterile air is sucked into the tank body (1) through the air intake assembly, characterized in that: it also includes an auxiliary stirring assembly, the auxiliary stirring assembly is installed on the driving shaft (3), the auxiliary stirring assembly includes a stirring part and a driving assembly, the stirring part is connected to the driving shaft (3), and can rotate synchronously with the driving shaft (3), and the stirring part itself can rotate at the same time, the driving assembly is connected between the driving shaft (3) and the stirring part, and the stirring part itself is driven to rotate by the driving assembly, and the driving shaft (3) is provided with a power assembly, and the driving shaft (3) is driven to rotate by the power assembly. 2. A self-priming multi-stage fermentation tank according to claim 1, characterized in that: the stirring part includes a stirring frame (4), the driving component is connected between the driving shaft (3) and the stirring frame (4), and the stirring frame (4) is rotatably installed on the surface of the driving shaft (3) through the driving component, and at the same time, the axis of the stirring frame (4) rotating shaft and the axis of the driving shaft (3) are staggered. 3. A self-priming multi-stage fermentation tank according to claim 2, characterized in that: the stirring part also includes a first cotyledon (5), the first cotyledon (5) is a cross-flow fan blade, and the first cotyledon (5) is rotatably installed in the middle of the stirring frame (4), and the axis of the rotating shaft of the first cotyledon (5) and the axis of the rotating shaft of the stirring frame (4) are staggered. 4. A self-priming multi-stage fermentation tank according to any one of claims 1 to 3, characterized in that: the driving assembly comprises a fixed bevel gear (6), a rotating bevel gear (7) and a mounting frame (8), the fixed bevel gear (6) is fixedly mounted inside the tank body (1), and the fixed bevel gear (6) is coaxially arranged with the driving shaft (3), the mounting frame (8) is fixedly mounted on the surface of the driving shaft (3), the rotating bevel gear (7) is rotatably mounted in the middle of the mounting frame (8), and the rotating bevel gear (7) is meshed with the fixed bevel gear (6), and at the same time, the rotating shaft of the rotating bevel gear (7) is coaxially connected with the rotating shaft of the stirring part, and can drive them to rotate synchronously. 5. A self-priming multi-stage fermentation tank according to claim 4, characterized in that: the mounting frame (8) is box-shaped, and the mounting frame (8) covers the fixed bevel gear (6) and the rotating bevel gear (7), and a mounting shaft (9) is fixedly installed inside the tank body (1), and the mounting shaft (9) is sleeved on the surface of the drive shaft (3), and the drive shaft (3) can rotate in the middle of the mounting shaft (9), and the bottom end of the mounting shaft (9) penetrates into the mounting frame (8) and is fixedly connected to the fixed bevel gear (6), and the mounting shaft (9) and the mounting frame (8) are in a sealed rotation connection. 6. A self-priming multi-stage fermentation tank according to claim 1, characterized in that: the power component includes a motor (10) and a transmission assembly, the motor (10) is fixedly installed on the top of the tank body (1), the transmission assembly is connected between the output shaft of the motor (10) and the drive shaft (3), and the motor (10) drives the drive shaft (3) to reciprocate under the action of the transmission assembly. 7. A self-priming multi-stage fermentation tank according to claim 6, characterized in that: the transmission assembly comprises a transmission gear (11), a rack (12), a crankshaft (13), a first connecting rod (14) and a protective cover (15), the transmission gear (11) is fixedly mounted on the surface of the drive shaft (3), the top of the tank body (1) is fixedly mounted on the guide rail (16), the rack (12) is slidably mounted on the guide rail (16), the crankshaft (13) is rotatably mounted on the top of the tank body (1), and the rotating shaft of the crankshaft (13) is coaxially connected to the output shaft of the motor (10) and can rotate synchronously with it, one end of the first connecting rod (14) is rotatably connected to the crankshaft (13), and the other end is rotatably connected to the surface of the rack (12), the protective cover (15) is detachably fixedly connected to the top of the tank body (1) by bolts, and the protective cover (15) covers the transmission gear (11), the rack (12), the crankshaft (13), the first connecting rod (14) and the guide rail (16). 8. A self-priming multi-stage fermentation tank according to claim 1, characterized in that it also includes an oscillation component, the oscillation component includes an oscillation ring (17), the oscillation ring (17) is installed in the tank body (1), and the oscillation ring (17) can slide along the axial direction of the drive shaft (3), a linkage component is connected between the oscillation ring (17) and the drive shaft (3), and the oscillation ring (17) can slide up and down inside the tank body (1) through the linkage component. 9. A self-priming multi-stage fermentation tank according to claim 8, characterized in that: the linkage assembly comprises a threaded sleeve (18) and a guide block (19), the oscillation ring (17) comprises an outer ring (1702), an inner ring (1701), a second connecting rod (1703) and a second cotyledon (1704), the threaded sleeve (18) is fixedly mounted on the surface of the drive shaft (3), the guide block (19) is fixedly mounted on the inner wall of the tank body (1), and the outer ring (1702) is fixedly mounted on the inner wall of the tank body (1). A sliding groove is provided on the surface of the inner ring (1701) and the outer ring (1702) is slidably matched with the guide block (19) through the sliding groove. The connecting rod (1703) and the second connecting rod (1703) are fixedly connected between the inner ring (1701) and the outer ring (1702). The second cotyledon (1704) is a cross-flow fan blade, and the second cotyledon (1704) is rotatably mounted on the surface of the second connecting rod (1703). The inner ring (1701) is threadedly sleeved on the surface of the threaded sleeve (18). 10. A self-priming multi-stage fermentation tank according to claim 1, characterized in that: the air intake component includes an air intake channel (20), an air supply pipe (21), a distribution chamber (22) and an air outlet (23), the air intake channel (20) is arranged in the middle of the driving shaft (3), the air supply pipe (21) is rotatably connected and communicated with the top of the driving shaft (3), the distribution chamber (22) is arranged inside the stirring blade (2), and the distribution chamber (22) is communicated with the air intake channel (20), the air outlet (23) is opened on the side of the stirring blade (2), and the air outlet (23) is communicated with the distribution chamber (22).