Modular bioreactor

Abstract

The utility model discloses a combined type bioreactor, including bottom plate, transparent bucket body, sealing end cover, support plate, fixed flow guide cylinder, movable flow guide cylinder, fixed link, arc connecting plate, control ring, air distributor, air inlet pipe and stirring mechanism. Transparent bucket body installs on the bottom plate, and the top is sealed through the sealing end cover, and support plate installs in the center of bottom plate and supports fixed flow guide cylinder, and the movable flow guide cylinder of adjustable height is equipped with on the flow guide cylinder top, and movable flow guide cylinder realizes height locking through fixed link and control ring. Air distributor is equipped below fixed flow guide cylinder, and is connected with external air inlet pipe, realizes even gas dispersion. Motor drives stirring rod to carry out mechanical stirring, promotes culture solution circulation and mixes. The structure can flexibly adjust flow guide cylinder position according to liquid level height, improves mixing uniformity and oxygen utilization efficiency, enhances operation adaptability and sealing safety, is applicable to microbial culture and reaction under different working conditions.

Description

Technical Field

[0001] This invention belongs to the field of microbial culture reactor technology, specifically relating to a combined bioreactor. Background Technology

[0002] Microbial culture reactors are widely used in bioengineering, environmental protection, fermentation industries, and other fields for the mass cultivation of microorganisms and the preparation of metabolites. Existing microbial culture reactors generally employ a combination of mechanical stirring and aeration to improve the mixing uniformity of the culture medium and the oxygen dissolution efficiency. The inclusion of a flow guide structure effectively guides the liquid flow circulation, enhances the stirring effect, and improves the stability of the culture environment and reaction efficiency.

[0003] However, in practical applications, the volume of the culture medium often changes according to experimental or production needs. When the gap between the top height of the guide tube and the liquid level is too large, it can cause short-circuiting backflow of the liquid, reducing mixing efficiency; while if the gap is too small, it can easily form local dead zones, affecting the overall mixing uniformity of the culture medium. Existing reactors typically only have guide tubes of a fixed height, which cannot be flexibly adjusted according to different volumes of culture medium, making it difficult to always match the guide structure with the liquid level, affecting the reactor's adaptability and mixing effect.

[0004] In addition, existing reactors with adjustable guide tubes are often designed to be complex, and the adjustment mechanism has problems such as inconvenient operation, unstable positioning, or insufficient structural strength. Under high-frequency adjustment and closed operation environments, the guide tube is prone to displacement or sealing failure, which reduces the reliability of the device operation. Utility Model Content

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide a modular bioreactor that can achieve flexible adjustment and stable positioning, allowing the height of its guide tube to be precisely adjusted according to the actual liquid level requirements, and then stably locked at the height after adjustment.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A modular bioreactor includes a base plate, a transparent barrel on top of the base plate, multiple reinforcing columns evenly arranged on the outer side of the top of the base plate, and a sealing end cap bolted to the top of the transparent barrel.

[0008] Three support plates are evenly arranged near the center on the upper surface of the base plate. A fixed guide tube is installed on the top of the three support plates. A support platform is provided at the center of the surface of the sealing end cap. A movable guide tube is slidably installed above the surface of the fixed guide tube.

[0009] The movable guide tube is provided with two fixing rods on the upper sides of both sides. Both fixing rods penetrate the sealing end cap and are respectively placed on both sides of the support platform.

[0010] Furthermore, an air distributor is embedded in the center of the upper surface of the base plate. The air distributor is positioned directly below the fixed guide tube. An air inlet pipe is connected to the bottom of the air distributor. The air inlet pipe passes through the side of the base plate and is connected to the pump body.

[0011] Furthermore, an air filter is provided on one side of the top of the sealing end cap, and handles are symmetrically arranged on the upper surface of the sealing end cap;

[0012] A motor is fixed on the upper surface of the support platform, and a stirring rod is installed downward at the output end of the motor. The end of the stirring rod is placed below the inside of the fixed guide tube.

[0013] Furthermore, the outer surface of the fixed guide tube is symmetrically provided with grooves, and the inner wall of the movable guide tube is symmetrically provided with protrusions, which slide inside the grooves.

[0014] Furthermore, an annular groove is uniformly formed along the axis above the surface of the fixing rod;

[0015] The tops of the two fixed rods are connected to arc-shaped connecting plates.

[0016] Furthermore, a control ring is rotatably mounted on the surface of the support platform, and convex plates are symmetrically arranged on the surface of the control ring, the thickness of which is consistent with the width of the annular groove.

[0017] Furthermore, a limiting semicircular groove is formed on one side of the convex plate, and the limiting semicircular groove is adapted to the internal dimensions of the annular groove.

[0018] Furthermore, a positioning hole is provided on the upper surface of the sealing end cap;

[0019] An extension plate is provided on the front side of the control ring, and a fixing bolt is screwed through the surface of the extension plate. The end of the fixing bolt is adapted to the internal size of the positioning hole.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] The modular bioreactor, through its integrated structural design of a base plate, reinforcing columns, and a transparent tank, effectively enhances the structural strength and operational stability of the equipment, ensuring that the reactor remains sealed and reliable even under long-term operation and high-intensity stirring conditions.

[0022] By evenly setting support plates on the bottom plate and installing fixed guide tubes on their upper ends, a reasonable gap is formed between the bottom of the guide tube and the bottom plate. The liquid can rise along the inside of the guide tube and then flow back from the bottom gap, forming an efficient circulation flow. This significantly enhances the mixing uniformity of the culture medium and effectively avoids the problem of local dead corners or liquid short-circuit backflow caused by the fixed height of the guide structure. It also solves the problem that existing reactors are difficult to adapt to the mixing requirements of different liquid levels.

[0023] A movable guide tube is added above the fixed guide tube, and it is designed with an adjustable fixing rod, an arc-shaped connecting plate and a control ring. Through the cooperation of the convex strip and the groove, the rotation locking of the control ring, the multiple limiting of the semi-circular groove and the annular groove, and the multi-point positioning of the fixing bolt and the positioning hole, the overall height of the guide tube can be flexibly adjusted and the height can be kept stable after adjustment. The operation process is convenient and reliable, which significantly improves the reactor's adaptability to different culture liquid volumes and levels, and makes up for the shortcomings of the existing technology's complex adjustment mechanism and unstable positioning.

[0024] The rational arrangement of the air distributor and the air inlet pipe can evenly inject gas into the bottom of the fixed guide tube, resulting in uniform bubble dispersion and high oxygen dissolution efficiency. This further optimizes the growth environment of microorganisms and improves the cultivation effect of the reactor.

[0025] The adoption of sealed end caps, exhaust filters, and multi-point locking structures significantly improves the sealing performance and operational safety of the reactor, ensuring a stable internal environment under different operating conditions, preventing gas and liquid leakage, effectively preventing pollution and safety hazards, and meeting the comprehensive needs of efficient mixing, flexible adjustment, and reliable sealing in actual use. Attached Figure Description

[0026] Figure 1 This is a front view structural diagram of the present utility model;

[0027] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0028] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0029] Figure 4 This is a schematic diagram of the installation structure of the base plate fixing guide tube of this utility model;

[0030] Figure 5 This is a schematic diagram of the installation structure of the fixed and movable guide tubes of this utility model;

[0031] Figure 6 This is a schematic diagram of the installation structure of the movable guide tube of this utility model;

[0032] Figure 7 This is a three-dimensional structural diagram of the control ring of this utility model.

[0033] The attached diagram lists the components represented by each number as follows:

[0034] 1. Base plate; 11. Reinforcing column; 12. Support plate; 2. Air distributor; 21. Air inlet pipe; 3. Transparent barrel; 4. Sealed end cap; 41. Handle; 42. Air outlet filter; 43. Support platform; 44. Positioning hole; 5. Motor; 51. Stirring rod; 6. Fixed guide tube; 61. Groove; 7. Movable guide tube; 71. Raised strip; 72. Fixing rod; 73. Annular groove; 74. Arc-shaped connecting plate; 8. Control ring; 81. Raised plate; 82. Limiting semi-circular groove; 83. Extension plate; 9. Fixing bolt. Detailed Implementation

[0035] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0036] Example 1:

[0037] like Figures 1-7 As shown, the combined bioreactor includes a base plate 1, with a transparent barrel 3 on top of the base plate 1. The transparent barrel 3 is used to contain the culture medium and facilitate observation of the internal culture state. Multiple reinforcing columns 11 are evenly arranged on the outer side of the top of the base plate 1. The reinforcing columns 11 are used to improve the stability of the overall structure of the base plate 1 and the transparent barrel 3 and prevent deformation during stirring and gas injection. A sealing end cap 4 is bolted to the top of the transparent barrel 3. The sealing end cap 4 seals the open top of the transparent barrel 3, effectively ensuring that a sealed cavity is formed inside the reactor, preventing gas leakage and ensuring the stability of the microbial culture environment.

[0038] Three support plates 12 are evenly arranged near the center of the upper surface of the base plate 1. The three support plates 12 are fixed to the base plate 1 by bolts or welding. The support plates 12 support the bottom of the fixed guide tube 6, so that the fixed guide tube 6 is in a vertical state inside the transparent barrel 3, and a bottom gap is formed between its bottom and the base plate 1 for liquid circulation. The fixed guide tube 6 is installed on the top of the three support plates 12. The fixed guide tube 6 serves as an important channel for internal fluid circulation. The liquid rises and flows back through the bottom gap, which helps to enhance the uniformity of mixing and improve the cultivation effect. A support platform 43 is set at the center of the surface of the sealing end cap 4. The support platform 43 improves the connection strength with other components by raising the platform structure. A movable guide tube 7 is slidably installed above the surface of the fixed guide tube 6. The movable guide tube 7 achieves flexible adjustment of the overall height of the guide tube through an adjustable structure to meet the mixing needs under different liquid levels and improve the applicability of the reactor.

[0039] Fixed rods 72 are provided on both sides of the movable guide tube 7. The fixed rods 72 pass through the connecting holes at the upper end of the movable guide tube 7 and extend along the height direction of the guide tube. The two fixed rods 72 pass through the sealing end cover 4 and extend to the outside of the sealing end cover 4, ensuring that the height adjustment operation can be performed in a sealed environment. The two fixed rods 72 are respectively placed on both sides of the support platform 43. By cooperating with the structure of the support platform 43, the positioning accuracy and structural stability of the guide tube during the adjustment process are improved, and shaking or displacement during adjustment is avoided.

[0040] like Figure 3 and Figure 4 As shown, an air distributor 2 is embedded in the center of the upper surface of the base plate 1. The air distributor 2 serves as a gas uniform dispersion structure, releasing gas evenly from bottom to top into the culture medium through porous or microporous structures, thereby improving oxygen dissolution efficiency and ensuring the metabolic needs of microorganisms. The air distributor 2 is positioned directly below the fixed guide tube 6, ensuring that the gas can directly participate in the liquid circulation inside the guide tube, further enhancing the stirring and mixing effect. An air inlet pipe 21 is connected to the bottom of the air distributor 2. The air inlet pipe 21 is the gas supply pipe for the reactor, passing through the side of the base plate 1 and connecting to the external pump body, thereby achieving continuous and controllable gas input and improving the overall reaction efficiency.

[0041] like Figures 1-3 As shown, an exhaust filter 42 is provided on one side of the top of the sealed end cap 4. The exhaust filter 42 is used to filter the exhaust gas generated inside the reactor to prevent microbial particles or impurities from escaping, ensuring the safety of the experimental environment and the purity of the reaction system. Handles 41 are symmetrically provided on the upper surface of the sealed end cap 4. The handles 41 are used to facilitate the operation of the sealed end cap 4 by the operator, improving the ease of use of the equipment. A motor 5 is fixed on the upper surface of the support platform 43. The motor 5 serves as a power output device and is firmly installed on the support platform 43 by flange connection or bolt fixing. A stirring rod 51 is installed downward at the output end of the motor 5. The end of the stirring rod 51 extends to the lower inner side of the fixed guide tube 6. The stirring rod 51 rotates under the drive of the motor 5 to realize continuous stirring of the culture medium, enhance the uniformity of liquid mixing, and effectively prevent the culture medium from separating.

[0042] like Figure 5 As shown, grooves 61 are symmetrically provided on the outer surface of the fixed guide tube 6. The grooves 61 serve as sliding tracks for adjusting and guiding the height of the movable guide tube 7, ensuring the stability and reliability of the movable guide tube 7 when it moves up and down. The inner wall of the movable guide tube 7 is symmetrically provided with protrusions 71. The protrusions 71 slide with the grooves 61 to prevent the movable guide tube 7 from shifting or rotating during adjustment, thereby improving the accuracy of height adjustment and structural stability, and meeting the optimal adjustment requirements of mixing efficiency under different liquid levels.

[0043] like Figure 5As shown, annular grooves 73 are evenly distributed along the axis on the surface of the fixed rod 72. The annular grooves 73 are used to cooperate with the subsequent locking structure to achieve precise locking of the movable guide tube 7 after it is adjusted to the specified height, preventing loosening or displacement during stirring and aeration. The tops of the two fixed rods 72 are connected to arc-shaped connecting plates 74. The arc-shaped connecting plates 74 are connected to the tops of the fixed rods 72 by screws. During adjustment, the arc-shaped connecting plates 74 can be held to move the two fixed rods 72 and the movable guide tube 7 up and down synchronously. The operation is simple and efficient, improving the flexibility of adjustment.

[0044] like Figures 5-7 As shown, a control ring 8 is rotatably mounted on the surface of the support platform 43. The control ring 8 is the core component for locking the height of the guide tube. Its angle is adjusted by rotation to engage with the annular groove 73 of the fixing rod 72. The surface of the control ring 8 is symmetrically provided with protruding plates 81. The thickness of the protruding plates 81 is strictly consistent with the width of the annular groove 73. Rotating the control ring 8 can make the protruding plates 81 engage with the annular groove 73, realizing bidirectional locking of the two fixing rods 72 and ensuring the stability of the height of the movable guide tube 7 after adjustment.

[0045] like Figures 5-7 A limiting semicircular groove 82 is provided on one side of the convex plate 81. The limiting semicircular groove 82 is adapted to the internal size of the annular groove 73, providing secondary limiting during the locking process, improving structural safety and reliability, and preventing the locking components from loosening due to vibration during long-term operation.

[0046] like Figure 6 As shown, a positioning hole 44 is provided on the upper surface of the sealing end cap 4. The positioning hole 44 is a mating hole for the fixing bolt 9, ensuring that the control ring 8 can be accurately positioned and locked by the fixing bolt 9 after rotating to the designated position, preventing the control ring 8 from rotating. An extension plate 83 is provided on the front side of the control ring 8. The extension plate 83 serves as the mounting base for the fixing bolt 9, and the fixing bolt 9 is screwed through its surface. The end of the fixing bolt 9 is adapted to the internal size of the positioning hole 44, ensuring the reliability and sealing of the overall structure after fixing, and further improving the applicability and safety of the reactor in multiple adjustments and complex operating environments.

[0047] Example 2:

[0048] See Figures 1-7 This embodiment further elaborates on the specific operation process and structural details of the combined bioreactor, taking into account the flexible adjustment under different cultivation requirements.

[0049] First, the operator places the reactor base plate 1 stably on the experimental platform and checks the reinforcing column 11 on the outside of the base plate 1 to confirm that the reinforcing column 11 is firmly connected to the base plate 1, thereby ensuring that the entire reactor structure has good support performance and stability during operation. Then, the transparent barrel 3 is installed vertically on the base plate 1 after being tightly fitted with the base plate 1 by the sealing gasket. The inside of the transparent barrel 3 is pre-cleaned and disinfected and is used to contain the required microbial culture medium. The transparency of the transparent barrel 3 allows for real-time observation of the internal liquid level and stirring effect.

[0050] After injecting an appropriate amount of culture medium, the operator checks the three support plates 12 at the center of the base plate 1 to ensure that the three support plates 12 are evenly distributed and fixed to the surface of the base plate 1 with fasteners. The upper ends of the three support plates 12 are used to support the fixed guide tube 6. The fixed guide tube 6 contacts the support plate 12 at its lower end, and an appropriate gap is left between the bottom and the base plate 1 to facilitate the up-and-down circulation of the culture medium during reactor operation. The fixed guide tube 6 has symmetrical grooves 61 on its outer side to provide sliding guidance for the subsequent adjustment of the movable guide tube 7.

[0051] After the sealing end cap 4 is installed, it is sealed to the top flange of the transparent barrel 3 by bolts. The sealing end cap 4 is equipped with handles 41 on both sides for easy loading, unloading and handling. A support platform 43 is installed in the center of the top of the sealing end cap 4. The motor 5 is installed on the top of the support platform 43 by screws. The output end of the motor 5 is vertically connected to the stirring rod 51. The bottom end of the stirring rod 51 enters the lower part of the interior of the fixed guide tube 6.

[0052] The air inlet pipe 21 is connected from the outside of the base plate 1, and the other end is connected to the air pump. The air inlet pipe 21 is connected to the air distributor 2 embedded in the center of the base plate 1. The air distributor 2 is located directly below the fixed guide tube 6 and adopts a porous ceramic or microporous stainless steel structure to uniformly and delicately disperse and release air or oxygen to the bottom of the culture medium, thereby enhancing the dissolved oxygen effect and the growth rate of microorganisms.

[0053] Based on the actual liquid level of the culture medium, the operator adjusts the installation height of the movable guide tube 7 to change the overall working length of the guide tube. Symmetrical protrusions 71 are provided on the inner wall of the movable guide tube 7, which slide within the grooves 61 of the fixed guide tube 6, ensuring that the movable guide tube 7 does not rotate or shift when moving up and down. During adjustment, the operator holds the arc-shaped connecting plate 74, simultaneously moving the two fixed rods 72 up and down. The fixed rods 72 pass through the sealing end cap 4 and extend to the outside. During movement, the top of the movable guide tube 7 can be adjusted to the optimal distance between it and the liquid level surface according to the liquid level requirements, thereby improving mixing and circulation efficiency.

[0054] Once adjusted, rotate the control ring 8. Symmetrically arranged on the surface of the control ring 8 are protruding plates 81, which engage with the annular groove 73 on the fixing rod 72. Rotation causes the protruding plates 81 to engage and be positioned within the annular groove 73, further engaging the limiting semicircular groove 82 with the annular groove 73 to achieve secondary positioning and prevent displacement of the movable guide tube 7 during operation. Subsequently, screw on the fixing bolt 9 on the extension plate 83 and insert the end of the fixing bolt 9 into the positioning hole 44 on the upper surface of the sealing end cover 4 to lock the overall angle of the control ring 8, thereby ensuring the stability of the guide structure after adjustment.

[0055] After the system is sealed, the motor 5 is turned on, and the stirring rod 51 rotates at high speed, driving the culture medium to mix thoroughly inside the transparent tank 3. At the same time, the air pump is started, and the gas is evenly injected into the bottom of the reactor through the air inlet pipe 21 and the air distributor 2. The air bubbles pass through the culture medium from bottom to top through the guide tube structure, improving the dissolved oxygen efficiency. Under the action of the guide tube structure, the culture medium generates a stable upward and backflow circulation, promoting uniform mixing and avoiding dead zones.

[0056] The top exhaust filter 42 can effectively filter the waste gas that escapes during the reaction process, prevent the leakage of microorganisms and impurities, and protect the safety of the experimental environment. All parts of the equipment have a tight structural design and excellent sealing performance, which can maintain good stability of the reaction system and cultivation effect even under high speed stirring and large flow of air intake.

[0057] This embodiment further improves the adjustment and locking mechanism of the movable guide tube, enhances structural sealing and operational safety, effectively solves the problems existing in the prior art in terms of mixing adaptability, adjustment convenience and operational reliability, and improves the practical value and application scope of the reactor.

[0058] The working principle of this invention is as follows: First, the required culture medium is poured into the transparent container 3, and the liquid level is adjusted to a suitable position. The sealing end cap 4 is fixed to the top of the transparent container 3 with bolts to form a sealed space, effectively preventing gas leakage and ensuring the stability of the microbial culture environment.

[0059] Start motor 5. Motor 5 drives stirring rod 51 to rotate inside fixed guide tube 6. The stirring action of stirring rod 51 causes the culture medium to form a vortex flow inside transparent tank 3, which enhances the overall mixing effect of the liquid and prevents the occurrence of stratification.

[0060] Simultaneously, an external air pump is activated, introducing gas into the air distributor 2 through the air inlet pipe 21. The air distributor 2 is located directly below the fixed guide tube 6, and its porous structure disperses the gas and releases it into the culture medium from bottom to top, significantly improving the uniformity of gas distribution and the oxygen dissolution efficiency.

[0061] Under the action of the stirring rod 51, the culture medium flows upward along the inside of the fixed guide tube 6, and then flows back through the gap formed between the three support plates 12 at the bottom, achieving continuous circulation and further improving the mixing uniformity and reaction efficiency.

[0062] To accommodate mixing needs at different liquid levels, the two fixed rods 72 can be driven by the arc-shaped connecting plate 74, allowing the movable guide tube 7 to move up and down outside the fixed guide tube 6. The protrusion 71 on the inner wall of the movable guide tube 7 slides into the groove 61 on the outer side of the fixed guide tube 6, ensuring a stable and smooth adjustment process. After adjustment, the control ring 8 is rotated, causing the protrusion 81 on the control ring 8 to embed into the annular groove 73 of the fixed rod 72. At the same time, the limiting semicircular groove 82 engages with the annular groove 73, and then the fixing bolt 9 is inserted into the positioning hole 44 on the sealing end cap 4 for locking, ensuring the stability of the height of the movable guide tube 7.

[0063] The sealed end cap 4 is equipped with an exhaust filter 42 at its top to filter waste gas generated during the reaction process, preventing impurities or microorganisms from escaping and ensuring a safe operating environment. The handle 41 on the surface of the sealed end cap 4 facilitates the disassembly, assembly, and handling of the equipment.

[0064] Through the above structure, the components work together to give the reactor good stirring and mixing capabilities, flexible structural adjustment functions and excellent sealing performance, which can adapt to different culture requirements and achieve a highly efficient microbial culture process.

[0065] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A modular bioreactor, comprising a bottom plate (1), characterized in that: A transparent barrel (3) is provided on the top of the base plate (1), and multiple reinforcing columns (11) are evenly arranged on the outer side of the top of the base plate (1). A sealing end cap (4) is installed on the top of the transparent barrel (3) by bolts. Three support plates (12) are evenly arranged on the upper surface of the base plate (1) near the center. A fixed guide tube (6) is installed on the top of the three support plates (12). A support platform (43) is arranged at the center of the surface of the sealing end cap (4). A movable guide tube (7) is slidably installed above the surface of the fixed guide tube (6). The movable guide tube (7) is provided with two fixing rods (72) on the upper sides of both sides. Both fixing rods (72) penetrate the sealing end cap (4) and are respectively placed on both sides of the support platform (43).

2. The combined bioreactor according to claim 1, characterized in that: An air distributor (2) is embedded in the center of the upper surface of the base plate (1). The air distributor (2) is placed directly below the fixed guide tube (6). An air inlet pipe (21) is connected to the bottom of the air distributor (2). The air inlet pipe (21) passes through the side of the base plate (1) and is connected to the pump body.

3. The combined bioreactor according to claim 1, characterized in that: An air filter (42) is provided on one side of the top of the sealing end cap (4), and handles (41) are symmetrically provided on the upper surface of the sealing end cap (4). A motor (5) is fixed on the upper surface of the support platform (43), and a stirring rod (51) is installed downward at the output end of the motor (5). The end of the stirring rod (51) is placed below the inner side of the fixed guide tube (6).

4. The combined bioreactor according to claim 1, characterized in that: The fixed guide tube (6) has symmetrical grooves (61) on its outer surface, and the movable guide tube (7) has symmetrical protrusions (71) on its inner wall. The protrusions (71) slide inside the grooves (61).

5. The combined bioreactor according to claim 1, characterized in that: The surface of the fixing rod (72) is provided with an annular groove (73) evenly distributed along the axis above it; The tops of the two fixed rods (72) are connected to arc-shaped connecting plates (74).

6. The combined bioreactor according to claim 5, characterized in that: A control ring (8) is rotatably mounted on the surface of the support platform (43). A convex plate (81) is symmetrically arranged on the surface of the control ring (8). The thickness of the convex plate (81) is consistent with the width of the annular groove (73).

7. The combined bioreactor according to claim 6, characterized in that: A limiting semicircular groove (82) is provided on one side of the convex plate (81), and the limiting semicircular groove (82) is adapted to the internal dimensions of the annular groove (73).

8. The combined bioreactor according to claim 7, characterized in that: The sealing end cap (4) has a positioning hole (44) on its upper surface; An extension plate (83) is provided on the front side of the control ring (8), and a fixing bolt (9) is screwed through the surface of the extension plate (83). The end of the fixing bolt (9) is adapted to the internal size of the positioning hole (44).

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