Microbial fermentation tank
By designing detachable connecting rods and sealing structures, the problem of cleaning microbial fermenters was solved, enabling convenient disassembly and cleaning, ensuring the sealing and stability of the fermenters, and improving production efficiency and product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QIQIHAR MEDICAL UNIVERSITY
- Filing Date
- 2025-06-12
- Publication Date
- 2026-05-15
AI Technical Summary
Existing microbial fermenters present difficulties in cleaning and maintenance, leading to the accumulation of residues that affect the hygiene of the fermentation environment and product quality.
The design features detachable connecting rods, inner circular plates, and stirring rotating rods, employing a dual fixing method of snap-fit and fixing bolts. Combined with arc-shaped and annular sealing gaskets, it ensures airtightness and ease of cleaning. The variable frequency motor is fixed by snap-fit between the L-shaped side column and the circular seat, simplifying installation and disassembly.
It enables easy disassembly and cleaning of fermentation tanks, reduces cleaning dead spots, ensures sealing and operational stability, and improves production efficiency and product quality.
Smart Images

Figure CN224243071U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fermentation tank technology, specifically to a microbial fermentation tank. Background Technology
[0002] In the microbial fermentation process, the fermenter, as the core equipment, directly affects fermentation efficiency and product quality due to its structural design and operational performance. However, the traditional fermenters widely used in the market currently present numerous inconveniences in terms of cleaning and maintenance, becoming one of the key factors restricting the improvement of production efficiency and the assurance of product quality.
[0003] The internal structure of existing fermenters is often quite complex, including multiple fixed connecting parts and sealing structures. While these designs ensure the stability and sealing of the fermentation process to a certain extent, they also pose a great challenge to cleaning. For example, the internal components such as the stirring device, connecting rod, top plate, and bottom plate are difficult to clean thoroughly by conventional means due to their compact structure and tight connections. This leads to the gradual accumulation of residues during long-term use, which not only affects the hygiene of the fermentation environment but may also cause microbial contamination and reduce product quality. Utility Model Content
[0004] The purpose of this invention is to provide a microbial fermenter to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a microbial fermenter, comprising a shell, a top cover on the top of the shell, a variable frequency motor at the center of the top of the top cover, a main shaft fixedly connected to the output end of the bottom of the variable frequency motor, a connecting rod at the bottom of the main shaft, the bottom of the connecting rod penetrating into the interior of the top cover and fixedly connected to an inner circular plate, several arc-shaped blocks fixedly connected to the center of the top of the shell, several arc-shaped grooves formed at the center of the bottom of the top cover, an inner top plate and an outer top plate fixedly connected to the top of the inner wall and the top of the outer wall of the shell, respectively, an inner bottom plate and an outer bottom plate fixedly connected to the bottom of the inner wall and the bottom of the outer wall of the top cover, an annular groove formed at the center of the top of the inner top plate, an annular retaining plate fixedly connected to the center of the bottom of the inner bottom plate, movable buckles rotatably connected to both sides of the outer end of the outer bottom plate, and auxiliary blocks fixedly connected to both sides of the outer wall of the outer top plate.
[0006] Compared with the prior art, the beneficial effects of this utility model are:
[0007] This microbial fermenter features detachable connecting rods, inner circular plates, and stirring rotating rods, allowing for easy disassembly of key stirring and transmission components for cleaning. This avoids cleaning difficulties caused by the compact structure. The connecting rods are secured to the main shaft using a dual method of snap-fit and fixing bolts, ensuring operational stability while facilitating disassembly and cleaning. The design of sealing structures such as arc-shaped blocks and arc-shaped grooves, and annular plates and annular grooves, not only ensures the sealing of the fermentation process but also effectively reduces cleaning dead zones through the addition of arc-shaped and annular sealing gaskets. The variable frequency motor is fixed by snap-fitting L-shaped side columns to a circular seat, simplifying the installation process and allowing for quick disassembly when cleaning or maintenance is needed. The design of the limiting rod further enhances the connection stability between the L-shaped side columns and the circular seat, while also facilitating positioning and fixation during disassembly. The combination of movable buckles and limiting bolts makes the connection between the outer bottom plate and the outer top plate more flexible, allowing for easy opening or closing during cleaning and making it easier to remove residues. Attached Figure Description
[0008] Figure 1 This is a schematic diagram of the structure of this utility model.
[0009] Figure 2 This utility model Figure 1 A magnified view of part A in the diagram.
[0010] Figure 3 This utility model Figure 1 A magnified view of part B in the diagram.
[0011] Figure 4 This is a three-dimensional view of the top cover of this utility model.
[0012] In the diagram: 1. Shell; 2. Side base frame; 3. Top cover; 4. Variable frequency motor; 5. Main shaft; 6. Connecting rod; 7. Inner circular plate; 8. Stirring rotating rod; 9. Annular positioning groove; 10. Positioning ring plate; 11. Clamping column; 12. Fixing bolt; 13. L-shaped side column; 14. Circular seat; 15. Limiting rod; 16. Feed pipe; 17. Arc groove; 18. Arc block; 19. Arc sealing gasket; 20. Inner bottom plate; 21. Inner top plate; 22. Outer bottom plate; 23. Outer top plate; 24. Annular groove; 25. Annular clamping plate; 26. Annular sealing gasket; 27. Auxiliary block; 28. Movable buckle plate; 29. Limiting bolt. Detailed Implementation
[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0014] Please see Figure 1-4 This utility model provides a technical solution: a microbial fermenter, including a shell 1, a top cover 3 on the top of the shell 1, a variable frequency motor 4 at the center of the top of the top cover 3, a main shaft 5 fixedly connected to the output end of the bottom of the variable frequency motor 4, a connecting rod 6 at the bottom of the main shaft 5, the bottom of the connecting rod 6 penetrating into the interior of the top cover 3 and fixedly connected to an inner circular plate 7, several arc-shaped blocks 18 fixedly connected to the center of the top of the shell 1, several arc-shaped grooves 17 opened at the center of the bottom of the top cover 3, an inner top plate 21 and an outer top plate 23 fixedly connected to the top of the inner wall and the top of the outer wall of the shell 1, respectively, an inner bottom plate 20 and an outer bottom plate 22 fixedly connected to the bottom of the inner wall and the bottom of the outer wall of the top cover 3, respectively, an annular groove 24 opened at the center of the top of the inner top plate 21, an annular clamping plate 25 fixedly connected to the center of the bottom of the inner bottom plate 20, movable buckle plates 28 rotatably connected to both sides of the outer end of the outer bottom plate 22, and auxiliary blocks 27 fixedly connected to both sides of the outer wall of the outer top plate 23.
[0015] The bottom of both sides of the housing 1 is fixedly connected to the side base frame 2. The rear end of the top side of the top cover 3 is connected to the feed pipe 16. The top of the top of the top cover 3 is provided with an annular positioning groove 9 near the center. The outer side of the top of the inner circular plate 7 is fixedly connected to the positioning ring plate 10. The top of the positioning ring plate 10 penetrates into the interior of the annular positioning groove 9 and is engaged with the annular positioning groove 9.
[0016] A stirring rotating rod 8 is fixedly connected to the center of the bottom of the inner circular plate 7. The bottom of the stirring rotating rod 8 is rotatably connected to the bottom of the shell 1. A locking post 11 is fixedly connected to the top of the connecting rod 6. The top of the locking post 11 penetrates into the interior of the main shaft 5 and is locked with the main shaft 5. A fixing bolt 12 is threadedly connected to one side of the main shaft 5. One side of the fixing bolt 12 penetrates into the interior of the locking post 11 and is threadedly connected with the locking post 11.
[0017] The top of the arc-shaped block 18 extends into the interior of the arc-shaped groove 17. An arc-shaped sealing gasket 19 is fixedly connected to the inner wall of the arc-shaped groove 17, and the inner wall of the arc-shaped sealing gasket 19 contacts the outer side of the arc-shaped block 18.
[0018] The bottom of the annular plate 25 extends into the interior of the annular groove 24. An annular sealing gasket 26 is fixedly connected to the inner wall of the annular groove 24, and the inner wall of the annular sealing gasket 26 contacts the outer wall of the annular plate 25.
[0019] One side of the movable buckle plate 28 is threadedly connected to a limit bolt 29. One side of the limit bolt 29 passes through the auxiliary block 27 and the outer top plate 23 in sequence and is threadedly connected to the outer top plate 23.
[0020] Both sides of the variable frequency motor 4 are fixedly connected with L-shaped side columns 13. Both sides of the top of the top cover 3 are fixedly connected with circular seats 14. The bottom of the L-shaped side column 13 passes through the interior of the circular seat 14 and is engaged with the circular seat 14. A limit rod 15 is provided on one side of the circular seat 14. One side of the limit rod 15 passes through the circular seat 14 and the L-shaped side column 13 in sequence and extends to the outside of the circular seat 14.
[0021] Working principle: The variable frequency motor 4 drives the main shaft 5 to rotate. The main shaft 5 has a locking pin 11 at the top of the connecting rod 6 inside, and the locking pin 11 is securely connected to the main shaft 5 by fixing bolts 12, ensuring the stability of power transmission. The arc-shaped groove 17 at the bottom of the top cover 3 cooperates with the arc-shaped block 18 at the top of the housing 1, and the arc-shaped sealing gasket 19 enhances the sealing effect. Simultaneously, the annular locking plate 25 of the inner bottom plate 20 cooperates with the annular locking groove 24 of the inner top plate 21, and the annular sealing gasket 26 further ensures the seal, preventing material leakage during fermentation. The variable frequency motor 4 is engaged with the circular seat 14 at the top of the top cover 3 via L-shaped side pillars 13 on both sides, and is fixed by a limiting rod 15 passing through the circular seat 14 and the L-shaped side pillars 13, ensuring the stability of the motor during operation. After the motor 4 starts, the main shaft 5 drives the connecting rod 6 and the inner circular plate 7 to rotate. The stirring rotating rod 8 at the bottom of the inner circular plate 7 rotates inside the shell 1 to evenly stir the fermentation material and promote the growth and metabolism of microorganisms. The positioning ring plate 10 at the top of the inner circular plate 7 engages with the annular positioning groove 9 inside the top cover 3 to ensure the stability of the stirring system during rotation and prevent shaking from affecting the stirring effect or causing equipment damage. The movable buckle plates 28 on both sides of the outer bottom plate 22 are connected to the outer top plate 23 through the limiting bolts 29. This design not only facilitates disassembly and cleaning but also provides additional sealing protection when needed to ensure the sealing and safety of the fermentation process. The fermentation material enters the shell 1 through the feed pipe 16 at the top of the top cover 3, making it convenient for operators to add materials.
[0022] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power, and the main controller can be a conventional known device such as a computer that can control it.
[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A microbial fermenter, comprising a shell (1), characterized in that: The top of the housing (1) is provided with a top cover (3), and a variable frequency motor (4) is provided at the center of the top of the top cover (3). The output end of the variable frequency motor (4) is fixedly connected to a main shaft (5). A connecting rod (6) is provided at the bottom of the main shaft (5). The bottom of the connecting rod (6) extends through the interior of the top cover (3) and is fixedly connected to an inner circular plate (7). Several arc-shaped blocks (18) are fixedly connected at the center of the top of the housing (1). Several arc-shaped grooves (17) are opened at the center of the bottom of the top cover (3). The top of the inner wall of the body (1) and the top of the outer wall are respectively fixedly connected to an inner top plate (21) and an outer top plate (23). The bottom of the inner wall of the top cover (3) and the bottom of the outer wall are respectively fixedly connected to an inner bottom plate (20) and an outer bottom plate (22). The center of the top of the inner top plate (21) is provided with an annular groove (24). The center of the bottom of the inner bottom plate (20) is fixedly connected to an annular plate (25). The two sides of the outer end of the outer bottom plate (22) are rotatably connected to movable buckles (28). The two sides of the outer wall of the outer top plate (23) are fixedly connected to auxiliary blocks (27).
2. A microbial fermenter according to claim 1, characterized in that: The bottom of both sides of the housing (1) is fixedly connected to a side base frame (2). The rear end of the top side of the top cover (3) is connected to a feed pipe (16). An annular positioning groove (9) is opened at the center of the top of the top of the top cover (3). A positioning ring plate (10) is fixedly connected to the outer side of the top of the inner circular plate (7). The top of the positioning ring plate (10) penetrates into the interior of the annular positioning groove (9) and engages with the annular positioning groove (9).
3. A microbial fermenter according to claim 1, characterized in that: A stirring rotating rod (8) is fixedly connected to the center of the bottom of the inner circular plate (7). The bottom of the stirring rotating rod (8) is rotatably connected to the bottom of the shell (1). A locking post (11) is fixedly connected to the top of the connecting rod (6). The top of the locking post (11) extends through the interior of the main shaft (5) and is locked to the main shaft (5). A fixing bolt (12) is threadedly connected to one side of the main shaft (5). One side of the fixing bolt (12) extends through the interior of the locking post (11) and is threadedly connected to the locking post (11).
4. A microbial fermenter according to claim 1, characterized in that: The top of the arc-shaped block (18) extends into the interior of the arc-shaped groove (17), and an arc-shaped sealing gasket (19) is fixedly connected to the inner wall of the arc-shaped groove (17). The inner wall of the arc-shaped sealing gasket (19) contacts the outer side of the arc-shaped block (18).
5. A microbial fermenter according to claim 1, characterized in that: The bottom of the annular plate (25) extends into the interior of the annular groove (24), and an annular sealing gasket (26) is fixedly connected to the inner wall of the annular groove (24). The inner wall of the annular sealing gasket (26) is in contact with the outer wall of the annular plate (25).
6. A microbial fermenter according to claim 1, characterized in that: One side of the movable buckle plate (28) is threadedly connected to a limiting bolt (29), and one side of the limiting bolt (29) passes through the auxiliary block (27) and the outer top plate (23) in sequence and is threadedly connected to the outer top plate (23).
7. A microbial fermenter according to claim 1, characterized in that: The variable frequency motor (4) is fixedly connected to L-shaped side columns (13) on both sides. The top of the top cover (3) is fixedly connected to circular seats (14) on both sides. The bottom of the L-shaped side column (13) extends into the interior of the circular seat (14) and engages with the circular seat (14). A limit rod (15) is provided on one side of the circular seat (14). One side of the limit rod (15) passes through the circular seat (14) and the L-shaped side column (13) in sequence and extends to the outside of the circular seat (14).