Microbial fermentation device and fermentation method

By designing an automated microbial fermentation device, the rotating and cleaning components are used to achieve automated cleaning of the inner wall of the tank, solving the problem of high intensity caused by manual cleaning and improving cleaning efficiency and equipment life.

CN121930940APending Publication Date: 2026-04-28北京碳和新材未来科技有限公司
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Patent Information

Application Number
CN202610172388.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-02-06
Publication Date
2026-04-28

AI Technical Summary

Technical Problem

Existing methods for cleaning the inner walls of microbial fermentation tanks rely on manual operation, resulting in high workload for workers, long cleaning time, and difficulty in effectively removing dirt, which affects product quality and equipment lifespan.

Method used

A microbial fermentation device was designed, comprising a rotating component, a plug-in component, and a cleaning component. The device automatically cleans the inner wall of the tank by using curved cleaning brushes and nozzles in conjunction with water flow to scrub the tank wall, reducing manual intervention.

Benefits of technology

It enables automated cleaning of the tank's inner wall, reducing the workload of workers, improving cleaning efficiency, reducing dirt accumulation, and extending the equipment's service life.

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Abstract

The invention relates to a microbial fermentation device and a fermentation method.The microbial fermentation device comprises a supporting frame, a fermentation tank body is arranged in the supporting frame, the surface of the fermentation tank body is fixedly sleeved with a square supporting ring, the square supporting ring is fixedly connected with the interior of the supporting frame, and the two side faces of the supporting frame are each fixedly connected with a containing frame; a cover plate is arranged at the top of the fermentation tank body, a fixing frame is fixedly connected to the top of the cover plate, a rotating assembly is arranged in the fixing frame, and a hollow pipe which penetrates through the cover plate and is rotationally connected with the penetrating part through a sealing bearing is arranged in the middle of the cover plate; the top end of the interior of the hollow pipe is rotationally connected with a butt joint pipe through a sealing bearing. According to the microbial fermentation device and the fermentation method, the inner wall of the tank wall can be automatically cleaned, manual cleaning by workers is not needed, the working intensity of the workers is reduced, and the using effect is improved.
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Description

Technical Field

[0001] This invention relates to the field of microbial fermentation technology, and in particular to a microbial fermentation apparatus and fermentation method. Background Technology

[0002] Microbial fermentation technology is widely used in food, beverage, pharmaceutical, and biochemical industries. The fermentation unit, as the core equipment of this technology, directly determines the quality, safety, and production stability of the fermented products through the cleanliness of its inner walls. During fermentation, organic matter such as proteins, polysaccharides, and microbial remains in the fermentation broth intertwine with inorganic matter such as calcium oxalate, sulfates, and tartrates, adhering firmly to the inner wall of the fermentation unit and forming a dense, yellowish-brown or white layer of fouling. This fouling not only breeds a large number of contaminating bacteria, leading to a significant increase in the contamination rate of subsequent batches of fermentation, resulting in product spoilage and economic losses, but also affects heat transfer efficiency, occupies effective fermentation volume, and, with long-term accumulation, exacerbates corrosion of the equipment's inner walls, shortening its service life. Therefore, it is necessary to clean the inside of the microbial fermentation tank after fermentation.

[0003] However, the existing methods for cleaning the inner walls of microbial fermentation tanks are usually done manually by staff. Manual cleaning greatly increases the workload of staff, increases cleaning time, and makes it inconvenient for staff to handle subsequent work. Therefore, we propose a microbial fermentation device and fermentation method. Summary of the Invention

[0004] This invention provides a microbial fermentation apparatus and fermentation method, which solves the technical problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: A microbial fermentation apparatus and method include a support frame, a fermentation tank housed inside the support frame, a square support ring fixedly fitted on the surface of the fermentation tank and fixedly connected to the interior of the support frame, placement frames fixedly connected to both sides of the support frame, a cover plate on the top of the fermentation tank, a fixing frame fixedly connected to the top of the cover plate, a rotating assembly housed inside the fixing frame, a hollow tube penetrating the cover plate and rotatably connected to the penetrating portion via a sealed bearing at the middle of the cover plate, a connecting pipe rotatably connected to the top of the hollow tube via a sealed bearing, the connecting pipe penetrating the fixing frame and fixedly connected to the penetrating portion, four evenly distributed inserts fixedly connected to the side of the top of the fermentation tank, each insert containing a connecting assembly, four evenly distributed nozzles below the cover plate, each nozzle fixedly communicating with the interior of the hollow tube, a nozzle fixedly connected to one end of each nozzle, two mounting plates fixedly connected to the surface of the hollow tube, and a cleaning assembly at one end of each mounting plate.

[0006] A further improvement of the technical solution of the present invention is that: two handles are fixedly connected to the top surface of the cover plate, a feeding pipe is fixedly connected through the top surface of the cover plate, a threaded cap is threadedly connected to the top of the feeding pipe, multiple stirring blades are fixedly connected to the surface of the hollow tube, a discharge pipe is provided at the bottom of the fermentation tank, and a valve is provided on the surface of the discharge pipe.

[0007] A further improvement of the technical solution of the present invention is that: the rotating component includes a motor fixedly connected to the cover plate, a rotating gear fixedly connected to the output end of the motor, a gear ring meshing with one side of the rotating gear, and the gear ring fixedly sleeved on the surface of the hollow tube.

[0008] A further improvement of the technical solution of the present invention is that: the plug-in assembly includes a curved plug plate that is plugged into the inner wall of the plug holder, and the curved plug plate is fixedly connected to the side of the cover plate.

[0009] A further improvement of the technical solution of the present invention is that: a fixed column is fixedly connected to the bottom end face of the bent insert, and a rotating baffle is rotatably sleeved on the surface of the fixed column through a bearing.

[0010] A further improvement of the technical solution of the present invention is that: the cleaning component includes a disassembly groove formed on one end face of the mounting plate, a disassembly block is inserted into the inner wall of the disassembly groove, a curved cleaning brush is fixedly connected to one end face of the disassembly block, and the curved cleaning brush is slidably connected to the inner wall of the placement frame.

[0011] A further improvement of the technical solution of the present invention is that: a threaded hole is provided on one side of the disassembly block, an installation opening is provided on the side of the disassembly groove, a threaded sleeve is fixedly connected to the inner wall of the installation opening, and a disassembly screw is threadedly connected to the inside of the threaded sleeve.

[0012] A further improvement of the technical solution of the present invention is that: a rotating cap is fixedly connected to one end face of the disassembly and assembly screw, and the other end of the disassembly and assembly screw is connected to the internal thread of the threaded hole.

[0013] A fermentation method using a microbial fermentation apparatus, characterized by comprising the following steps: S1. Pour the microorganisms into the fermentation tank through the feeding pipe, and screw on the threaded cap to close the feeding pipe; S2. Start the stirring program. The hollow tube is rotated by the rotating component. The hollow tube drives the stirring blade to rotate. The stirring blade mixes the microorganisms inside the fermentation tank. After mixing, let it stand for fermentation. S3. After fermentation is complete, open the valve of the feed pipe to collect the fermentation liquid, and then clean the tank wall. S4. When cleaning the tank wall, release the limiting relationship with the bracket through the plug-in assembly, and pull up the cover plate through the pull handle to remove the structural components under the cover plate from the fermentation tank. S5. Take out the curved cleaning brush plate placed inside the placement frame, insert the disassembly block into the disassembly groove, and rotate the disassembly screw by rotating the cap so that the disassembly screw is screwed into the threaded hole by the action of the threaded sleeve to complete the installation of the curved cleaning brush plate. S6. After installation, the cover plate is installed on the fermentation tank by inserting the plug-in component into the bracket. Then, it is fixedly connected to the external water pipe through the connecting pipe to supply water to the inside of the hollow tube. Water is sprayed onto the tank wall through the spray pipe and nozzle. The rotating component makes the hollow tube rotate, which in turn makes the curved cleaning brush rotate to clean the tank wall. The cleaning wastewater is discharged through the discharge pipe to complete the cleaning of the inner wall of the fermentation tank. S7. After cleaning, turn off the rotating component and separate the cover plate from the fermentation tank again. Remove the curved cleaning brush from the mounting plate and place the removed curved cleaning brush inside the placement frame for later use.

[0014] The beneficial effects of this invention are as follows: This invention provides a microbial fermentation device and fermentation method, which have the following advantages: 1. The present invention proposes a microbial fermentation device and fermentation method, which can temporarily place unused curved cleaning brushes through a placement frame, and can drive the stirring blades to rotate through a rotating component, thereby mixing the fermentation liquid inside the fermentation tank. 2. The microbial fermentation device and fermentation method proposed in this invention involves inserting a disassembly block into a disassembly slot, rotating the disassembly screw by rotating the cap to screw the screw into the threaded hole, thus completing the installation of the curved cleaning brush. Afterwards, a water pipe can be connected to the external water pipe through the connecting pipe, allowing water to be supplied to the hollow tube. Water can be sprayed onto the inner wall of the tank through the spray pipe and nozzle. With the rotating curved cleaning brush, the inner wall of the tank can be automatically scrubbed, eliminating the need for manual cleaning by staff and reducing the workload of staff.

[0015] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it according to the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Specific embodiments of the present invention are given in detail below with reference to the accompanying drawings. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of a microbial fermentation device and fermentation method according to an embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of the structure of a microbial fermentation device and fermentation method from another perspective is provided; Figure 3 for Figure 2 An enlarged schematic diagram of the structure at point A in a microbial fermentation device and fermentation method is provided. Figure 4 for Figure 1 A partial structural schematic diagram of a microbial fermentation device and fermentation method is provided. Figure 5 for Figure 4 A partial structural disassembly diagram of a microbial fermentation device and fermentation method is provided.

[0017] The attached diagram lists the components represented by each number as follows: 1. Cover plate; 2. Fermentation tank body; 3. Curved insert plate; 4. Insert rack; 5. Fixing rack; 6. Connecting pipe; 7. Hollow tube; 8. Gear ring; 9. Rotating gear; 10. Motor; 11. Square support ring; 12. Support frame; 13. Feed pipe; 14. Placement frame; 15. Rotating baffle; 16. Fixing column; 17. Spray pipe; 18. Nozzle; 19. Mounting plate; 20. Curved cleaning brush; 21. Stirring blade; 22. Disassembly block; 23. Threaded hole; 24. Disassembly groove; 25. Mounting port; 26. Threaded sleeve; 27. Disassembly screw; 28. Rotating cap. Detailed Implementation

[0018] The following is in conjunction with the appendix Figure 1-5 The principles and features of the present invention are described below. The examples given are for illustrative purposes only and are not intended to limit the scope of the invention. The invention is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the invention will become clearer from the following description and claims. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the invention.

[0019] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0021] Example 1 like Figure 1-5As shown, the present invention provides a microbial fermentation device, including a support frame 12, a fermentation tank 2 disposed inside the support frame 12, a square support ring 11 fixedly sleeved on the surface of the fermentation tank 2, the square support ring 11 being fixedly connected to the inside of the support frame 12, placement frames 14 being fixedly connected to both sides of the support frame 12, a cover plate 1 disposed on the top of the fermentation tank 2, a fixing frame 5 being fixedly connected to the top of the cover plate 1, a rotating assembly disposed inside the fixing frame 5, and a hole penetrating the cover plate 1 and rotatably connected to the penetrating part through a sealed bearing being disposed in the middle of the cover plate 1. The inner top of the hollow tube 7 is rotatably connected to the connecting pipe 6 via a sealed bearing. The connecting pipe 6 passes through the fixing frame 5 and is fixedly connected to the through part. Four inserts 4 are fixedly connected to the side of the top of the fermentation tank 2 in a circumferentially evenly distributed manner. The inserts 4 are equipped with insert components inside. Four spray pipes 17 are evenly distributed in a circumferentially distributed manner below the cover plate 1. The spray pipes 17 are fixedly connected to the inside of the hollow tube 7. One end of the spray pipe 17 is fixedly connected to the nozzle 18. Two mounting plates 19 are fixedly connected to the surface of the hollow tube 7. One end of the mounting plate 19 is equipped with a cleaning component.

[0022] Specifically, the cleaning assembly is fixed to the mounting plate 19, and the cover plate 1 is installed on the top of the fermentation tank 2. The cover plate 1 is then positioned and connected to the bracket 4 via a plug-in assembly. At this point, the bristles of the curved cleaning brush 20 of the cleaning assembly abut against the inner wall of the fermentation tank 2. Water is supplied to the hollow tube 7 through an external water pipe connected to the connecting pipe 6. The water is sprayed onto the inner wall of the tank through the spray pipe 17 and the nozzle 18. The hollow tube 7 is rotated by the rotating assembly, which in turn causes the curved cleaning brush 20 to rotate, thus scrubbing the tank wall. The combined effect of the water spray from the nozzle 18 enhances the cleaning efficiency. The wastewater from the cleaning process is discharged through the discharge pipe 13. A one-way valve is installed on the surface of the connecting pipe 6.

[0023] In this embodiment, two handles are fixedly connected to the top surface of the cover plate 1, a feeding pipe is fixedly connected through the top surface of the cover plate 1, a threaded cap is threadedly connected to the top of the feeding pipe, multiple stirring blades 21 are fixedly connected to the surface of the hollow tube 7, a discharge pipe 13 is provided at the bottom of the fermentation tank 2, and a valve is provided on the surface of the discharge pipe 13.

[0024] Specifically, microorganisms can be added to the inside of the fermentation tank 2 through the feeding pipe, the feeding pipe can be closed through the threaded cover, the material can be discharged through the discharge pipe 13, and the opening and closing of the discharge pipe 13 can be controlled by the valve.

[0025] In this embodiment, the rotating assembly includes a motor 10 fixedly connected to the cover plate 1. A rotating gear 9 is fixedly connected to the output end of the motor 10. A gear ring 8 is meshed with one side of the rotating gear 9 and is fixedly sleeved on the surface of the hollow tube 7.

[0026] Specifically, the motor 10 can drive the rotating gear 9, which in turn causes the gear ring 8 to rotate the hollow tube 7, thereby causing the curved cleaning brush plate 20 to rotate.

[0027] In this embodiment, the plug-in assembly includes a curved plug plate 3 that plugs into the inner wall of the plug holder 4. The curved plug plate 3 is fixedly connected to the side of the cover plate 1. A fixing post 16 is fixedly connected to the bottom end face of the curved plug plate 3. A rotating baffle 15 is rotatably sleeved on the surface of the fixing post 16 through a bearing.

[0028] Specifically, the rotating baffle 15 can limit the connection between the bent insert 3 and the insert 4. The bent insert 3 can be inserted into the insert 4, thereby allowing the cover plate 1 to be connected and installed with the fermentation tank 2.

[0029] In this embodiment, the cleaning assembly includes a disassembly groove 24 formed on one end face of the mounting plate 19. A disassembly block 22 is inserted into the inner wall of the disassembly groove 24. A curved cleaning brush 20 is fixedly connected to one end face of the disassembly block 22. The curved cleaning brush 20 is slidably connected to the inner wall of the placement frame 14. A threaded hole 23 is formed on one side of the disassembly block 22. An installation opening 25 is formed on the side of the disassembly groove 24. A threaded sleeve 26 is fixedly connected to the inner wall of the installation opening 25. A disassembly screw 27 is threadedly connected to the inside of the threaded sleeve 26. A rotating cap 28 is fixedly connected to one end face of the disassembly screw 27. The other end of the disassembly screw 27 is threadedly connected to the inside of the threaded hole 23.

[0030] Specifically, the mounting and disassembly screw 27 can be rotated by rotating the cap 28. The mounting and disassembly screw 27 can be screwed into and out of the threaded hole 23 through the threaded sleeve 26. When screwed into the threaded hole 23, the mounting and disassembly block 22 can be limited and connected with the mounting and disassembly groove 24 to complete the installation of the curved cleaning brush plate 20; when screwed out of the threaded hole 23, the mounting and disassembly block 22 can be separated from the mounting and disassembly groove 24, so that the curved cleaning brush plate 20 can be disassembled.

[0031] A fermentation method using a microbial fermentation apparatus includes the following steps: S1. Pour the microorganisms into the fermentation tank 2 through the feeding pipe, and screw on the threaded cap to close the feeding pipe; S2. Start the stirring program. Rotate the hollow tube 7 through the rotating component. The hollow tube 7 drives the stirring blade 21 to rotate. The stirring blade 21 mixes the microorganisms inside the fermentation tank 2. After mixing, let it stand for fermentation. S3. After fermentation is complete, open the valve of the feed pipe 13 to collect the fermentation liquid, and then clean the tank wall. S4. When cleaning the tank wall, release the limiting relationship with the bracket 4 through the plug-in assembly, and pull the cover plate 1 up through the pull handle to remove the structural components under the cover plate 1 from the fermentation tank 2. S5. Take out the curved cleaning brush plate 20 placed inside the placement frame 14, insert the disassembly block 22 into the disassembly groove 24, rotate the disassembly screw 27 by rotating the cap 28, so that the disassembly screw 27 is screwed into the threaded hole 23 by the action of the threaded sleeve 26, and the installation of the curved cleaning brush plate 20 is completed. S6. After installation, the cover plate 1 and the fermentation tank 2 are installed by inserting the plug-in component into the bracket 4. Then, the external water pipe is fixedly connected through the connecting pipe 6 to supply water to the inside of the hollow pipe 7. Water is sprayed onto the tank wall through the spray pipe 17 and the nozzle 18. The rotating component is used to rotate the hollow pipe 7, which in turn rotates the curved cleaning brush 20 to clean the tank wall. The cleaning wastewater is discharged through the discharge pipe 13 to complete the cleaning of the inner wall of the fermentation tank 2. S7. After cleaning, turn off the rotating component and separate the cover plate 1 from the fermentation tank 2 again. Disassemble the curved cleaning brush 20 from the mounting plate 19 and place the disassembled curved cleaning brush 20 inside the placement frame 14 for subsequent use.

[0032] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Those skilled in the art can readily implement the present invention based on the accompanying drawings and the above description. However, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the present invention, utilizing the disclosed technical content, are equivalent embodiments of the present invention. Furthermore, any modifications, alterations, or variations made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the present invention.

Claims

1. A microbial fermentation apparatus, comprising a support frame (12), characterized in that, The support frame (12) is equipped with a fermentation tank (2) inside. A square support ring (11) is fixedly fitted on the surface of the fermentation tank (2). The square support ring (11) is fixedly connected to the inside of the support frame (12). Placement frames (14) are fixedly connected to both sides of the support frame (12). A cover plate (1) is provided on the top of the fermentation tank (2). A fixing frame (5) is fixedly connected to the top of the cover plate (1). A rotating component is provided inside the fixing frame (5). A hollow tube (7) is provided in the middle of the cover plate (1) and is rotatably connected to the through part through a sealed bearing. The hollow tube (7) is located inside the... The top is rotatably connected to a connecting pipe (6) via a sealed bearing. The connecting pipe (6) passes through the fixed frame (5) and is fixedly connected to the through part. Four inserts (4) are evenly distributed in a circle on the side of the top of the fermentation tank (2). Inserts (4) are provided with insert components inside. Four spray pipes (17) are evenly distributed in a circle below the cover plate (1). The spray pipes (17) are fixedly connected to the inside of the hollow tube (7). One end of the spray pipe (17) is fixedly connected to a nozzle (18). Two mounting plates (19) are fixedly connected to the surface of the hollow tube (7). One end of the mounting plate (19) is provided with a cleaning component.

2. The microbial fermentation apparatus according to claim 1, characterized in that, The top surface of the cover plate (1) is fixedly connected to two handles, and the top surface of the cover plate (1) is fixedly connected to a feeding pipe. The top of the feeding pipe is threadedly connected to a threaded cap. The surface of the hollow tube (7) is fixedly connected to multiple stirring blades (21). The bottom of the fermentation tank (2) is provided with a discharge pipe (13), and the surface of the discharge pipe (13) is provided with a valve.

3. The microbial fermentation apparatus according to claim 1, characterized in that, The rotating assembly includes a motor (10) fixedly connected to the cover plate (1), and a rotating gear (9) is fixedly connected to the output end of the motor (10). A gear ring (8) is meshed on one side of the rotating gear (9), and the gear ring (8) is fixedly sleeved on the surface of the hollow tube (7).

4. The microbial fermentation apparatus according to claim 1, characterized in that, The plug assembly includes a curved insert (3) that plugs into the inner wall of the insert (4), and the curved insert (3) is fixedly connected to the side of the cover plate (1).

5. The microbial fermentation apparatus according to claim 4, characterized in that, The bottom end face of the curved insert (3) is fixedly connected to a fixed column (16), and a rotating baffle (15) is mounted on the surface of the fixed column (16) through a bearing.

6. The microbial fermentation apparatus according to claim 1, characterized in that, The cleaning assembly includes a disassembly groove (24) formed on one end face of the mounting plate (19), a disassembly block (22) is inserted into the inner wall of the disassembly groove (24), a curved cleaning brush (20) is fixedly connected to one end face of the disassembly block (22), and the curved cleaning brush (20) is slidably connected to the inner wall of the placement frame (14).

7. The microbial fermentation apparatus according to claim 6, characterized in that, The disassembly block (22) has a threaded hole (23) on one side, and the disassembly groove (24) has an installation port (25) on the side. A threaded sleeve (26) is fixedly connected to the inner wall of the installation port (25), and a disassembly screw (27) is threadedly connected to the inside of the threaded sleeve (26).

8. The microbial fermentation apparatus according to claim 7, characterized in that, One end of the mounting / removing screw (27) is fixedly connected to a rotating cap (28), and the other end of the mounting / removing screw (27) is connected to the internal thread of the threaded hole (23).

9. A fermentation method using a microbial fermentation apparatus, characterized in that, Includes the following steps: S1. Pour the microorganisms into the fermentation tank (2) through the feeding pipe, and screw on the threaded cap to close the feeding pipe; S2. Start the stirring program and rotate the hollow tube (7) by rotating the component. The hollow tube (7) drives the stirring blade (21) to rotate. The stirring blade (21) mixes the microorganisms inside the fermentation tank (2). After mixing, let it stand for fermentation. S3. After fermentation is complete, open the valve of the feed pipe (13) to collect the fermentation liquid, and then clean the tank wall. S4. When cleaning the tank wall, release the limiting relationship with the insert (4) through the plug-in assembly, and pull the cover (1) up through the pull handle to remove the structural components under the cover (1) from the fermentation tank (2); S5. Take out the curved cleaning brush plate (20) placed inside the placement frame (14), insert the disassembly block (22) into the disassembly groove (24), rotate the disassembly screw (27) by rotating the cap (28), so that the disassembly screw (27) is screwed into the threaded hole (23) by the action of the threaded sleeve (26), and the installation of the curved cleaning brush plate (20) is completed. S6. After installation, the cover plate (1) and the fermentation tank (2) are installed by inserting the plug-in assembly into the bracket (4). Then, the external water pipe is fixedly connected through the connecting pipe (6) to supply water to the hollow tube (7). Water is sprayed onto the tank wall through the action of the spray pipe (17) and the nozzle (18). The hollow tube (7) is rotated by the rotating assembly, and the curved cleaning brush plate (20) is rotated to clean the tank wall. The wastewater from the cleaning is discharged through the discharge pipe (13) to complete the cleaning of the inner wall of the fermentation tank (2). S7. After cleaning, turn off the rotating assembly and separate the cover plate (1) from the fermentation tank (2) again. By disassembling the curved cleaning brush (20) from the mounting plate (19), the disassembled curved cleaning brush (20) is placed inside the placement frame (14) for subsequent use.