A microbial liquid fermentation reaction tank

Abstract

The present invention belongs to the technical field of microbiological equipment, and specifically is a microbial bacterial liquid fermentation reaction tank, comprising a tank body and an aeration pipe, wherein the aeration pipe is installed at the bottom of the tank body, the aeration pipe is externally connected to an air supply device, and the aeration pipe is designed to be opened in the inner cavity of the tank body; an observation window made of a transparent material is inlaid and installed on the tank body; and an adjustment component is also included, wherein the adjustment component is installed inside the tank body, and the adjustment component is used to adjust the aeration position; the present invention adjusts the aeration position in real time in the microbial bacterial liquid fermentation reaction process by arranging the adjustment component, controls the position where bubbles flow into the fermentation liquid, and further meets the oxygen demand of the microorganisms as much as possible under different conditions, provides a suitable environment for the growth and breeding of the microorganisms, and further enhances the microbial fermentation effect.

Description

Technical Field

[0001] The invention belongs to the technical field of microbiological equipment, in particular to a microbial bacterial liquid fermentation reaction tank. Background Art

[0002] Microbial liquid fermentation is the liquid feeding of microbial fermentation. When microorganisms are fermented and reproduced, the liquid feeding method is widely used in fertilizers, medicine, food and other fields because of the advantages of easy dispersion of microbial liquid, high temperature transfer effect, simple operation and high degree of automation.

[0003] In the microbial liquid fermentation process, the microbial liquid is dispersed in the fermentation liquid with a certain depth, and the automatic gas supply equipment continuously supplies oxygen to the fermentation liquid, so that the oxygen content in the fermentation liquid is maintained within a certain range, creating a suitable environment for the reproduction and growth of microorganisms. However, in the actual application process, it is found that since bubbles have a tendency to float in the fermentation liquid, it is necessary to continuously aerate the fermentation reaction tank during the microbial liquid fermentation process, so that oxygen-containing bubbles continuously float in the fermentation liquid, thereby bringing a steady stream of oxygen to the fermentation liquid. However, in the actual application process, it is found that on the one hand, the floating rate of bubbles in the fermentation liquid is affected by the viscosity of the fermentation liquid. As the viscosity of the fermentation liquid increases, the greater the force that hinders the movement of bubbles, the slower the floating rate of bubbles. At the same time, the products of microbial growth and reproduction and the consumption of substances in the fermentation liquid will affect the viscosity of the fermentation liquid. On the other hand, in the early stage of microbial fermentation, the amount of microbial liquid is small and the oxygen consumption is low. As the fermentation reaction continues, the amount of microbial liquid gradually increases, resulting in a gradual increase in oxygen content. Therefore, the demand for aeration is different at different stages of microbial fermentation.

[0004] A microbial liquid fermentation tank is disclosed in the related art, and the application number is CN2014201465590. This solution can divide large bubbles introduced into the tank body into small bubbles during the floating process, slow down the floating speed, and promote the contact and reaction between the liquid and oxygen. At the same time, air can be blown into the liquid through the through holes on the tube, which not only makes the air contact with the liquid, but also plays a certain stirring role, thereby improving the production quality of fertilizers. However, in the process where the viscosity of the fermentation liquid changes with the progress of the reaction, the bubble supply rate in this solution is constant. Therefore, when the viscosity of the fermentation liquid is relatively low, the bubble floating rate is too fast, and the oxygen utilization rate in the bubbles is low. When the viscosity of the fermentation liquid is relatively high, the oxygen supply rate in the fermentation liquid far away from the bubble output end is insufficient, which is not conducive to the fermentation reaction of the microbial liquid.

[0005] In view of this, the present invention proposes a microbial liquid fermentation reaction tank to solve the above technical problems. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art and solve the above-mentioned technical problems, the present invention proposes a microbial liquid fermentation reaction tank.

[0007] The technical solution adopted by the present invention to solve the technical problem is: a microbial bacterial liquid fermentation reaction tank described in the present invention comprises a tank body and an aeration pipe, wherein the aeration pipe is installed at the bottom of the tank body, the aeration pipe is externally connected to an air supply device, and the aeration pipe is designed to be opened in the inner cavity of the tank body;

[0008] An observation window made of transparent material is inlaid on the tank body;

[0009] It also includes an adjustment component, which is installed inside the tank body and is used to adjust the aeration position;

[0010] The adjustment assembly includes a dispersion tube, an adjustment piston and an adjustment cable;

[0011] The tank body is provided with uniformly distributed dispersion pipes, each of which is in conduction connection with the aeration pipe, and each of which is provided with uniformly distributed aeration holes;

[0012] The regulating piston is slidably installed in the dispersion pipe, and the regulating piston divides the inner cavity of the dispersion pipe into two chambers that are not connected to each other;

[0013] The adjusting cable is fixedly mounted on the adjusting piston, and the adjusting cable is used to adjust the position of the adjusting piston.

[0014] Preferably, an elastic membrane is fixedly mounted on the inner wall of the dispersion tube, and micropores are formed in the elastic membrane corresponding to the aeration holes, and the micropores are designed to be closed in an initial state.

[0015] Preferably, a driving motor is fixedly installed on the top of the tank body, and the output end of the driving motor extends into the tank body. A plurality of connecting frames are fixedly installed on the output end of the driving motor, and the dispersion pipes are fixedly installed on the connecting frames. A conducting groove is provided on the connecting frame, and the aeration pipe is rotatably connected to the connecting frame and extends into the conducting groove, and the aeration pipe is conductively connected to the dispersion pipe through the conducting groove.

[0016] Preferably, it further comprises a viscosity testing component, wherein the viscosity testing component comprises a testing ball;

[0017] The dispersion tube is provided with a through hole, the adjustment rope extends from the through hole to the outside of the dispersion tube, the adjustment rope is located outside the dispersion tube and a test ball is fixedly installed, the test ball is made of a hollow ball, and the diameter of the test ball is larger than the diameter of the dispersion tube.

[0018] Preferably, an elastic rope is fixedly installed inside the dispersion pipe, the elastic rope is fixedly connected to the regulating piston, and the gravity of the regulating piston is greater than the sliding friction of the regulating piston.

[0019] Preferably, a water supply pipe is fixedly installed on the outside of the tank body, the water supply pipe extends to the middle of the aeration pipe and is connected to the aeration pipe through a three-way valve, and the water supply pipe is externally connected to a cleaning water device.

[0020] Preferably, an expansion cavity is provided at the top end of the dispersion tube, the diameter of the expansion cavity is larger than the diameter of the regulating piston, and the through hole is located above the expansion cavity.

[0021] Preferably, the test ball is an elastic expandable and contractible structure, a drainage tube is fixedly installed on the test ball, the drainage tube extends to the outside through a dispersion tube, a conducting groove and an aeration tube, a pressure regulating tube is fixedly installed on the end of the drainage tube away from the test ball, a piston is slidably installed in the pressure regulating tube, a push-pull rod is rotatably installed on the end of the piston away from the drainage tube, the push-pull rod passes through and extends to the outside of the pressure regulating tube, the push-pull rod is threadedly connected to the pressure regulating tube, the test ball, the drainage tube and the pressure regulating tube are filled with hydraulic oil, and the pressure regulating tube adjusts the volume of the test ball by adjusting the hydraulic pressure in the test ball.

[0022] Preferably, the pressure regulating tube is marked with scales, and the scales correspondingly display the piston movement distance and the test ball volume.

[0023] The beneficial effects of the present invention are as follows:

[0024] 1. The microbial liquid fermentation reaction tank described in the present invention is provided with a regulating component. In the microbial liquid fermentation reaction process, the aeration position is adjusted in real time to control the position where the bubbles flow into the fermentation liquid, thereby satisfying the oxygen demand of the microorganisms as much as possible under different conditions, providing a suitable environment for the growth and reproduction of the microorganisms, and enhancing the microbial fermentation effect.

[0025] 2. The microbial liquid fermentation reaction tank described in the present invention can adjust the length of the aeration section of the dispersion pipe by itself when the viscosity of the fermentation liquid changes through the use of a viscosity testing component. At the same time, when the staff actively observes the floating rate of the bubbles, they can also adjust the size of the resistance encountered by the test ball by adjusting the rotation rate of the driving motor, thereby making the adjustment of the aeration position more flexible. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below in conjunction with the accompanying drawings.

[0027] Figure 1 is a stereogram of the present invention;

[0028] Figure 2 It is a partial structural stereogram of the present invention;

[0029] Figure 3 It is a stereoscopic diagram of the assembly of the aeration pipe, the water supply pipe and the drainage pipe;

[0030] Figure 4 It is a cross-sectional view of the pressure regulating pipe;

[0031] Figure 5 is a cross-sectional view of the dispersion tube;

[0032] Figure 6 yes Figure 5 A partial enlarged view of the middle part;

[0033] Figure 7 is a partial cross-sectional view of the connecting frame;

[0034] In the figure: 1. tank body; 11. aeration pipe; 12. observation window; 2. dispersion pipe; 21. aeration hole; 22. adjusting piston; 23. adjusting rope; 24. elastic membrane; 25. driving motor; 26. connecting frame; 27. conduction groove; 28. test ball; 29. ​​through hole; 3. elastic rope; 4. water supply pipe; 41. three-way valve; 42. expansion chamber; 43. drainage pipe; 5. pressure regulating pipe; 51. piston; 52. push-pull rod. DETAILED DESCRIPTION

[0035] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0036] like Figures 1 to 7 As shown, a microbial bacterial liquid fermentation reaction tank according to the present invention comprises a tank body 1 and an aeration pipe 11, wherein the aeration pipe 11 is installed at the bottom of the tank body 1, the aeration pipe 11 is externally connected to an air supply device, and the aeration pipe 11 is designed to be opened in the inner cavity of the tank body 1;

[0037] The tank body 1 is inlaid with an observation window 12 made of transparent material;

[0038] It also includes an adjustment component, which is installed inside the tank body 1 and is used to adjust the aeration position;

[0039] The regulating assembly includes a dispersion pipe 2, a regulating piston 22 and a regulating cable 23;

[0040] The tank body 1 is provided with uniformly distributed dispersion pipes 2, each of which is electrically connected to the aeration pipe 11, and each of which is provided with uniformly distributed aeration holes 21;

[0041] The regulating piston 22 is slidably installed in the dispersion pipe 2, and the regulating piston 22 divides the inner cavity of the dispersion pipe 2 into two chambers that are not connected to each other;

[0042] The adjusting cable 23 is fixedly mounted on the adjusting piston 22 , and the adjusting cable 23 is used to adjust the position of the adjusting piston 22 .

[0043] An elastic membrane 24 is fixedly mounted on the inner wall of the dispersion tube 2 . The elastic membrane 24 has micropores corresponding to the aeration holes 21 . The micropores are closed in an initial state.

[0044] During the fermentation reaction of microbial liquid, the microbial liquid is mixed with a liquid culture medium and placed in a reaction tank. The microorganisms continue to grow and multiply. During this process, the substances in the culture medium are continuously consumed, and products are discharged into the culture medium, causing the composition of the mixture (fermentation liquid) in the reaction tank to gradually become complex. In addition, during the continuous fermentation process, with the addition of the culture medium, the discharge of microorganisms and other activities, the viscosity of the fermentation liquid changes to a certain extent. In order to maintain the utilization effect of oxygen-containing bubbles when the viscosity changes, an adjustment component is provided in the present invention. The aeration position is changed by the adjustment component, thereby providing a more suitable oxygen atmosphere for the microorganisms in the reaction liquid, thereby facilitating the stable fermentation of the microorganisms.

[0045] Specifically, in the microbial liquid fermentation reaction process, the fermentation liquid is located in the tank body 1, which mainly includes a sealing cover, a sealing barrel, and a variety of temperature sensors, pressure sensors, etc. installed on the sealing cover. During the fermentation reaction, the tank body 1 is in a closed state, isolating the fermentation liquid from the outside air, thereby reducing the probability of contamination by foreign bacteria. During this process, the air supply equipment connected to the aeration pipe 11 continues to work, the air supply equipment continuously draws outside air, and filters and kills dust and foreign bacteria in the air, and then pumps it into the aeration pipe 11, while the dispersion pipe 2 in the adjustment component is The aeration pipe 11 is connected to the aeration pipe 11, so the air is transported to the dispersion pipe 2. With the continuous pumping of air, the air pressure in the dispersion pipe 2 gradually increases, thereby pressurizing the elastic membrane 24 on the inner wall of the dispersion pipe 2. The elastic membrane 24 is deformed at the aeration hole 21 corresponding to the aeration hole, thereby increasing the volume of the micropores. The initially closed micropores are opened, and the air is transported to the fermentation liquid in the form of small bubbles, providing oxygen for the microorganisms in the fermentation liquid. During the entire fermentation reaction, with the changes in the culture medium concentration, microbial content, water content and other conditions in the fermentation liquid, the fermentation liquid The viscosity and density will change, and thus the floating rate of the bubbles generated by aeration will change. Therefore, during the fermentation reaction, the staff actively observes the floating rate of the bubbles in the fermentation liquid through the observation window 12 opened on the tank body 1, and pulls the adjusting ropes 23 at both ends of the adjusting piston 22, thereby driving the adjusting piston 22 to move up and down in the dispersion pipe 2. When the floating rate of the bubbles in the fermentation liquid is faster, the adjusting piston 22 is controlled to move downward, thereby reducing the proportion of the aeration section in the dispersion pipe 2, and the aeration position is located at the bottom of the tank body 1, and air enters in the form of bubbles. After the bubbles float in the fermentation liquid, they have a long floating distance, so it is convenient for microorganisms to use the oxygen in the bubbles during the floating process. When the bubbles float slowly in the fermentation liquid, the regulating piston 22 is controlled to move upward, so that the proportion of the aeration section of the dispersion pipe 2 increases, and the aeration position is dispersed in the vertical direction. On the one hand, it is difficult for the bubbles to diffuse at this time. After the aeration position is dispersed, it is convenient for the bubbles to disperse in the fermentation liquid. On the other hand, the bubbles flow out from the aeration holes 21 at different heights, which is convenient for providing oxygen to the microorganisms in the upper position of the tank body 1 compared to the bubbles all flowing out from the bottom.

[0046] The present invention provides a regulating component to adjust the aeration position in real time during the microbial liquid fermentation reaction process, control the position where the bubbles flow into the fermentation liquid, and thus meet the oxygen demand of the microorganisms as much as possible under different conditions, provide a suitable environment for the growth and reproduction of the microorganisms, and enhance the microbial fermentation effect.

[0047] As a preferred embodiment of the present invention, a driving motor 25 is fixedly installed on the top of the tank body 1, and the output end of the driving motor 25 extends into the tank body 1. A plurality of connecting frames 26 are fixedly installed on the output end of the driving motor 25. The dispersion pipes 2 are all fixedly installed on the connecting frames 26. A conducting groove 27 is provided on the connecting frame 26. The aeration pipe 11 is rotatably connected to the connecting frame 26, and the aeration pipe 11 extends into the conducting groove 27. The aeration pipe 11 is conductively connected to the dispersion pipe 2 through the conducting groove 27.

[0048] During fermentation, the driving motor 25 at the top of the tank body 1 is turned on, and the output end of the driving motor 25 drives the connecting frame 26 to rotate. Since the dispersion tubes 2 are installed on the connecting frame 26 and are connected to the aeration tube 11 through the conducting groove 27 provided on the connecting frame 26, the rotation of the connecting frame 26 causes the dispersion tube 2 to rotate, and the horizontal position of the bubbles flowing out of the aeration hole 21 is continuously changed. In conjunction with the adjustment component, the uniformity of the dispersion of the bubbles in the tank body 1 is further enhanced, providing a suitable environment for the growth and reproduction of microorganisms.

[0049] As a preferred embodiment of the present invention, it further comprises a viscosity testing component, wherein the viscosity testing component comprises a testing ball 28;

[0050] The dispersion tube 2 is provided with a through hole 29 , and the adjustment rope 23 extends from the through hole 29 to the outside of the dispersion tube 2 . The adjustment rope 23 is located outside the dispersion tube 2 and a test ball 28 is fixedly installed thereon. The test ball 28 is made of a hollow ball, and the diameter of the test ball 28 is larger than the diameter of the dispersion tube 2 .

[0051] An elastic rope 3 is fixedly installed inside the dispersion pipe 2 . The elastic rope 3 is fixedly connected to the regulating piston 22 . The gravity of the regulating piston 22 is greater than the sliding friction of the regulating piston 22 .

[0052] In order to further enhance the convenience of using the equipment, a viscosity testing component is provided in the present invention. When the driving motor 25 drives the connecting frame 26 to move at a uniform speed, the test ball 28 in the viscosity testing component moves with the connecting frame 26. Since the diameter of the test ball 28 is larger than the diameter of the dispersion tube 2, the fermentation liquid will be displaced when the test ball 28 moves, thereby generating resistance to the movement of the test ball 28. Under the action of resistance, the test ball 28 tends to move away from the dispersion tube 2, thereby causing the test ball 28 to pull the adjusting cable 23 and the adjusting piston 22 until the resistance of the test ball 28 is the same as the elasticity of the elastic rope 3. Then, the relative distance between the test ball 28 and the dispersion tube 2 is determined. Since the volume of the test ball 28 is constant and the movement speed is relatively stable, the test ball 28 is The resistance encountered is directly related to the viscosity of the fermentation liquid. As the viscosity of the fermentation liquid increases, the resistance encountered by the test ball 28 during the movement becomes greater, which in turn causes the regulating piston 22 to rise a greater distance. The rise of the regulating piston 22 causes the aeration section of the dispersion tube 2 to account for an increase, which in turn increases the dispersion of the bubbles in the vertical direction, promoting the diffusion of the bubbles and the oxygen supplementation of the microorganisms. In actual applications, the use of the viscosity test component can automatically adjust the length of the aeration section of the dispersion tube 2 when the viscosity of the fermentation liquid changes. At the same time, when the staff actively observes the floating rate of the bubbles, they can also adjust the resistance encountered by the test ball 28 by adjusting the rotation rate of the drive motor 25, thereby making the adjustment of the aeration position more flexible.

[0053] As a preferred embodiment of the present invention, a water supply pipe 4 is fixedly installed outside the tank body 1, and the water supply pipe 4 extends to the middle of the aeration pipe 11 and is connected to the aeration pipe 11 through a three-way valve 41. The water supply pipe 4 is externally connected to a cleaning water device.

[0054] An expansion chamber 42 is formed at the top of the dispersion tube 2 . The diameter of the expansion chamber 42 is larger than the diameter of the regulating piston 22 . The through hole 29 is located above the expansion chamber 42 .

[0055] In the microbial fermentation process, in order to avoid the mutual influence of the previous and subsequent fermentation reactions, or problems such as equipment residues, the equipment is often thoroughly cleaned before and after the fermentation reaction. During the cleaning, the staff manually rotates the three-way valve 41 to disconnect the aeration pipe 11 from the air supply equipment and connect it to the water supply pipe 4, and simultaneously turns on the water supply equipment. Under the action of pressure, the water flows from the water supply pipe 4 and the aeration pipe 11 into the dispersion pipe 2, and is sprayed into the tank body 1 through the aeration hole 21. At the same time, the staff holds a high-pressure water gun to flush the inside of the opened pipe body, thereby comprehensively cleaning the equipment. It should be noted that during the cleaning process, the water pressure of the water supply equipment continues to increase. Under the action of the water pressure, the regulating piston 22 is pushed upward, so that the regulating piston 22 enters the expansion chamber 42. Since the diameter of the expansion chamber 42 is larger than the diameter of the regulating piston 22, the water can flow from the gap between the regulating piston 22 and the expansion chamber 42 into the through hole 29, thereby flushing the regulating piston 22, thereby enhancing the cleaning effect of the regulating equipment.

[0056] As a preferred embodiment of the present invention, the test ball 28 is an elastic expandable and contractible structure, and a drainage tube 43 is fixedly installed on the test ball 28. The drainage tube 43 extends to the outside through the dispersion tube 2, the conduction groove 27, and the aeration tube 11. A pressure regulating tube 5 is fixedly installed at one end of the drainage tube 43 away from the test ball 28, and a piston 51 is slidably installed in the pressure regulating tube 5. A push-pull rod 52 is rotatably installed at one end of the piston 51 away from the drainage tube 43, and the push-pull rod 52 passes through and extends to the outside of the pressure regulating tube 5. The push-pull rod 52 is threadedly connected to the pressure regulating tube 5. The test ball 28, the drainage tube 43 and the pressure regulating tube 5 are filled with hydraulic oil. The pressure regulating tube 5 adjusts the volume of the test ball 28 by adjusting the hydraulic pressure in the test ball 28.

[0057] The pressure regulating tube 5 is marked with scales, and the scales correspondingly display the movement distance of the piston 51 and the volume of the test ball 28.

[0058] In order to further enhance the convenience of adjusting the movement resistance of the test ball 28, the test ball 28 in the present invention is an elastic expandable and contractible structure. When the staff actively adjusts the aeration position, they can manually rotate the push-pull rod 52, so that the push-pull rod 52 pushes the piston 51 to move in the pressure regulating pipe 5, and then the filling effect of the hydraulic oil on the test ball 28 is changed by negative pressure extraction or compression of the hydraulic oil, thereby changing the volume of the test ball 28, and adjusting the relative movement area of ​​the test ball 28 with the fermentation liquid during the movement, thereby further enhancing the flexibility of equipment adjustment.

[0059] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A microbial liquid fermentation reaction tank, comprising a tank body (1) and an aeration pipe (11), wherein the aeration pipe (11) is installed at the bottom of the tank body (1), the aeration pipe (11) is externally connected to an air supply device, and the aeration pipe (11) is designed to open in the inner cavity of the tank body (1); The tank body (1) is inlaid with an observation window (12) made of transparent material; Features: It also includes an adjustment component, which is installed inside the tank body (1) and is used to adjust the aeration position; The adjustment assembly comprises a dispersion pipe (2), an adjustment piston (22) and an adjustment cable (23); The tank body (1) is provided with uniformly distributed dispersion pipes (2), the dispersion pipes (2) are all conductively connected to the aeration pipe (11), and the dispersion pipes (2) are provided with uniformly distributed aeration holes (21); The regulating piston (22) is slidably mounted in the dispersion tube (2), and the regulating piston (22) divides the inner cavity of the dispersion tube (2) into two chambers that are not connected to each other; The adjusting cable (23) is fixedly mounted on the adjusting piston (22), and the adjusting cable (23) is used to adjust the position of the adjusting piston (22); A driving motor (25) is fixedly mounted on the top of the tank body (1), the output end of the driving motor (25) extends into the tank body (1), a plurality of connecting frames (26) are fixedly mounted on the output end of the driving motor (25), the dispersion pipes (2) are all fixedly mounted on the connecting frames (26), a conducting groove (27) is provided on the connecting frames (26), the aeration pipe (11) is rotatably connected to the connecting frame (26), the aeration pipe (11) extends into the conducting groove (27), and the aeration pipe (11) is conductively connected to the dispersion pipe (2) via the conducting groove (27); Also included is a viscosity test assembly, the viscosity test assembly including a test ball (28); The dispersion tube (2) is provided with a through hole (29), the adjustment cable (23) extends from the through hole (29) to the outside of the dispersion tube (2), the adjustment cable (23) is located outside the dispersion tube (2) and a test ball (28) is fixedly installed, the test ball (28) is made of a hollow ball, and the diameter of the test ball (28) is larger than the diameter of the dispersion tube (2); An elastic rope (3) is fixedly installed inside the dispersion pipe (2), the elastic rope (3) is fixedly connected to the regulating piston (22), and the gravity of the regulating piston (22) is greater than the sliding friction force of the regulating piston (22); A water supply pipe (4) is fixedly installed on the outside of the tank body (1), the water supply pipe (4) extends to the middle of the aeration pipe (11) and is connected to the aeration pipe (11) via a three-way valve (41), and the water supply pipe (4) is externally connected to a cleaning water device; An expansion chamber (42) is provided at the top end of the dispersion tube (2); the diameter of the expansion chamber (42) is greater than the diameter of the regulating piston (22); and the through hole (29) is located above the expansion chamber (42).

2. The microbial liquid fermentation reaction tank according to claim 1, characterized in that: An elastic membrane (24) is fixedly mounted on the inner wall of the dispersion tube (2), and micropores are formed in the elastic membrane (24) corresponding to the aeration holes (21), and the micropores are designed to be closed in an initial state.

3. The microbial liquid fermentation reaction tank according to claim 1, characterized in that: The test ball (28) is an elastic expandable and contractible structure. A drainage tube (43) is fixedly mounted on the test ball (28). The drainage tube (43) extends to the outside through the dispersion tube (2), the conduction groove (27) and the aeration tube (11). A pressure regulating tube (5) is fixedly mounted on the end of the drainage tube (43) away from the test ball (28). A piston (51) is slidably mounted in the pressure regulating tube (5). A push-pull rod (52) is rotatably mounted on the end of the piston (51) away from the drainage tube (43). The push-pull rod (52) passes through and extends to the outside of the pressure regulating tube (5). The push-pull rod (52) is threadedly connected to the pressure regulating tube (5). The test ball (28), the drainage tube (43) and the pressure regulating tube (5) are filled with hydraulic oil. The pressure regulating tube (5) adjusts the volume of the test ball (28) by adjusting the hydraulic pressure in the test ball (28).

4. The microbial liquid fermentation reaction tank according to claim 3, characterized in that: The pressure regulating tube (5) is marked with a scale, and the scale correspondingly displays the movement distance of the piston (51) and the volume of the test ball (28).

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