Liquid fermentation tank device capable of avoiding contamination by miscellaneous bacteria

Abstract

The application discloses a liquid fermentation tank device capable of avoiding contamination of miscellaneous bacteria and mainly relates to the field of fermentation tanks. The device comprises a tank body, a heating interlayer arranged outside the tank body, a sampling pipe arranged on the tank body, a swing shaft rotatably connected to the inside of the tank body, a swing rod fixed on the swing shaft, a sampling barrel rotatably connected to the bottom end of the swing rod, a sampling seat arranged on the side wall of the inside of the tank body, a suction assembly arranged on the sampling seat, a transfer barrel arranged on the side wall of the tank body, a sampling inlet and a sampling outlet arranged on the transfer barrel, the sampling pipe and the sampling outlet being in communication, and an adjusting assembly arranged on the transfer barrel and used for controlling opening and closing of the sampling inlet and the sampling outlet. The device has the beneficial effect that it can solve the technical problem that miscellaneous bacteria from the outside are easy to enter the fermentation tank and cause contamination during sampling, reduce the possibility of entry of miscellaneous bacteria from the outside under the premise of guaranteeing sampling accuracy, and avoid contamination of the fermentation tank.

Description

Technical Field

[0001] This invention relates to the field of fermentation, specifically to a liquid fermentation tank device that avoids contamination by miscellaneous microorganisms. Background Technology

[0002] Liquid fermenters are used to ferment and cultivate microbial colonies to obtain a certain number of microorganisms or related fermentation products. Liquid fermenters allow the microorganisms, substrates, products, and heat to diffuse fully in the liquid, ensuring that the fermentation process takes place under homogeneous conditions, greatly improving fermentation efficiency and maintaining product stability. During the fermentation process, it is necessary to regularly sample and test the fermentation status to control the fermentation status in a timely and accurate manner. Traditional sampling methods allow outside air to easily enter the fermenter through the sampling tube, leading to contamination of the fermenter by other microorganisms, affecting the smooth progress of subsequent fermentation, and impacting the quality of the fermentation culture and the stability of the fermentation products. Summary of the Invention

[0003] The purpose of this invention is to provide a liquid fermentation tank device that avoids contamination by miscellaneous bacteria. It can solve the technical problem that external miscellaneous bacteria can easily enter the fermentation tank and cause contamination during sampling. It can accurately and extensively sample the liquid in the fermentation tank. During sampling, the external environment is not directly connected to the fermentation tank. While ensuring the accuracy of sampling, it reduces the possibility of external miscellaneous bacteria entering and avoids contamination of the fermentation tank.

[0004] To achieve the above objectives, the present invention employs the following technical solution: A liquid fermentation tank device for preventing contamination by miscellaneous bacteria includes a tank body with an external heating jacket, a top cover, a bottom discharge pipe, and a sampling pipe. An internal swing shaft is rotatably connected to the tank body, one end of which extends to the outside of the tank body. A swing rod is fixed to the swing shaft, and a sampling bucket is rotatably connected to the bottom end of the swing rod. A sampling seat is located on the side wall of the tank body above the liquid surface, and the sampling seat has a suction assembly for use with the sampling bucket. An inclined transfer bucket is located on the side wall of the tank body, and a heating jacket is also provided on the outside of the transfer bucket. The sampling inlet and sampling outlet are respectively located at the top and bottom of the sampling container. The sampling tube is connected to the sampling outlet. The transfer bucket is equipped with an adjustment component to control the opening and closing of the sampling inlet and sampling outlet. Under the control of the adjustment component, at most one of the sampling inlet and sampling outlet can be in the open state. A connecting pipe is connected to the sampling inlet. A through hole is provided on the side wall of the sampling bucket. A blocking plate for controlling the opening and closing of the through hole is rotatably connected to the inner wall of the sampling bucket. A torsion spring is provided between the blocking plate and the inner wall of the sampling bucket. When the sampling bucket is fixed on the sampling seat by the suction component, the connecting pipe extends into the through hole and drives the blocking plate to rotate, thereby opening the through hole.

[0005] Furthermore, the adjustment assembly includes a rotating shaft rotatably connected inside the transfer tank, one end of which extends to the outside of the transfer tank. The rotating shaft is provided with an upper sealing plate and a lower sealing plate for use with the top and bottom of the transfer tank. Both the upper and lower sealing plates are rotatably connected to the inner wall of the transfer tank. The upper sealing plate is provided with a liquid inlet for use with the sampling inlet, and the lower sealing plate is provided with a liquid outlet for use with the sampling outlet. The liquid inlet and liquid outlet are staggered.

[0006] Furthermore, a triangular indicator block is provided at the end of the rotating shaft located on the outside of the transfer barrel.

[0007] Furthermore, a fixing seat is provided on the inner wall of the tank opposite to the sampling seat. The fixing seat is also provided with a suction assembly for use with the sampling bucket. A heating plate is provided below the fixing seat. When the sampling bucket is fixed on the fixing seat by the suction assembly, the heating plate contacts the side wall of the sampling bucket.

[0008] Furthermore, a tension spring is provided between the swing arm and the inner wall of the tank near the sampling seat.

[0009] Furthermore, the attraction component is a magnetic block, which magnetically attracts the side wall of the sampling bucket.

[0010] Furthermore, the fixed base is provided with a notch, the magnetic block is movably connected in the notch, and a pull rod is slidably connected to the side wall of the tank, with the magnetic block fixed to the end of the pull rod.

[0011] Furthermore, a compression spring is provided between the magnetic block and the side wall of the tank, and a stop block is provided on the pull rod at a position outside the tank.

[0012] Furthermore, the bottom of the tank is provided with multiple support legs, the bottom of the support legs is provided with rollers, and the tank is provided with multiple observation windows.

[0013] Furthermore, the end of the connecting pipe is symmetrically provided with a top block, which is in contact with the blocking plate.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The structure of this invention features a swing shaft rotatably mounted inside the tank, with a swing rod fixed on the swing shaft. A sampling bucket is rotatably connected to the bottom end of the swing rod. A sampling seat is located on the side wall above the liquid surface inside the tank, and the sampling seat is equipped with a suction component for use with the sampling bucket. When sampling and testing the liquid inside the tank, this structure rotates the swing shaft from the outside, causing the swing rod inside to swing. This allows the sampling bucket at the bottom end of the swing rod to contact the liquid inside the tank through the swing. During the contact process, the sampling bucket tilts and rotates under the action of buoyancy, allowing the liquid to enter the sampling bucket. Compared with the traditional fixed-point sampling method, this increases the sampling range of the sampling bucket, making the sample more representative and able to more accurately reflect the fermentation situation inside the tank. Moreover, the sampling process is carried out in a completely closed manner, ensuring the accuracy and safety of the sampling. 2. An inclined transfer drum is installed on the side wall of the tank. A heating jacket is provided on the outer side of the transfer drum. Sampling inlets and outlets are located at corresponding positions at the top and bottom of the inclined direction of the transfer drum, respectively. A sampling tube is connected to the sampling outlet. An adjusting component is provided on the transfer drum to control the opening and closing of the sampling inlet and outlet. Under the control of the adjusting component, at most one of the sampling inlet and outlet can be in the open state. This structure closes both the sampling inlet and outlet simultaneously before and after sampling, and the heating jacket sterilizes the transfer drum at high temperature, ensuring the purity of the air inside the transfer drum and reducing the chance of contamination by other bacteria. During sampling, the adjusting component opens the sampling inlet. When the sampling outlet is closed, the transfer container and the sampling container are connected. At this time, the sample inside the sampling container flows into the transfer container through the sampling inlet. During this process, because the sampling outlet is closed, bacteria from the external environment will not enter the transfer container or the sampling container, thus effectively avoiding bacterial contamination. After the sample in the sampling container is drained, the regulating component controls the sampling outlet to open and the sampling inlet to close. The sample in the transfer container is discharged through the sampling tube connected to the sampling outlet. During this process, because the sampling inlet is closed, bacteria from the external environment will still not enter the sampling container. The entire sampling process effectively avoids the possibility of external bacteria entering the tank, effectively reducing the chance of contamination. 3. A connecting pipe is installed at the sampling inlet. A through hole is provided on the side wall of the sampling bucket. A blocking plate that controls the opening and closing of the through hole is rotatably connected to the inner wall of the sampling bucket. A torsion spring is provided between the blocking plate and the inner wall of the sampling bucket. When the sampling bucket is fixed on the sampling seat by the suction assembly, the connecting pipe extends into the through hole and drives the blocking plate to rotate, thereby opening the through hole. With this structure, when the sampling bucket swings to the sampling seat and is fixed by the suction assembly, the connecting pipe passes through the through hole and contacts the blocking plate. After squeezing the blocking plate, it drives the blocking plate to rotate and open the through hole, so that the connecting pipe automatically connects with the sampling bucket. This allows the sample in the sampling bucket to automatically pass through the through hole and the connecting pipe and flow into the transfer bucket, thereby making the sampling process smoother and the sampling operation of the sample in the swinging sampling bucket more efficient and smoother. Attached Figure Description

[0015] Appendix Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Appendix Figure 2 This is the left view of the present invention.

[0017] Appendix Figure 3 This is an appendix to the present invention. Figure 2 A cross-sectional view along the AA direction.

[0018] Appendix Figure 4 This is an appendix to the present invention. Figure 3 A magnified view of part B in the middle.

[0019] Appendix Figure 5 This is an appendix to the present invention. Figure 3 A magnified view of part C in the middle.

[0020] Appendix Figure 6 This is an appendix to the present invention. Figure 3 A cross-sectional view along the DD direction.

[0021] The labels shown in the attached diagram: 1. Tank body; 2. Heating jacket; 3. Cover; 4. Discharge pipe; 5. Sampling pipe; 6. Swing shaft; 7. Swing rod; 8. Sampling bucket; 9. Sampling seat; 10. Transfer bucket; 11. Sampling inlet; 12. Sampling outlet; 13. Connecting pipe; 14. Through hole; 15. Blocking plate; 16. Torsion spring; 17. Rotating shaft; 18. Upper sealing plate; 19. Lower sealing plate; 20. Liquid inlet; 21. Liquid outlet; 22. Triangular indicator block; 23. Fixed seat; 24. Heating plate; 25. Tension spring; 26. Magnetic block; 27. Notch; 28. Pull rod; 29. ​​Compression spring; 30. Stop block; 31. Support leg; 32. Roller; 33. Observation window; 34. Top block. Detailed Implementation

[0022] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined in this application.

[0023] Reference Figure 1 and Figure 2This invention describes a liquid fermentation tank device to avoid contamination by miscellaneous bacteria. The main structure includes a tank body 1, which is a cylindrical structure made of metal. A heating jacket 2 is provided on the outside of the tank body 1, through which steam is introduced to heat the tank body 1, thereby maintaining its temperature or sterilizing it at high temperature. A cover 3 is provided on the top of the tank body 1, which is fixed to the top of the tank body 1 with multiple bolts, facilitating opening and cleaning of the interior of the tank body 1. A discharge pipe 4 is connected to the bottom of the tank body 1, through which the fermented bacteria or product is discharged after fermentation. The tank body 1 is equipped with a sampling tube 5, which is used to sample the liquid inside the tank body 1 during fermentation, thereby accurately and timely controlling the fermentation status inside the tank body 1. A swing shaft 6 is rotatably connected inside the tank body 1 via a bearing. One end of the swing shaft 6 extends to the outside of the tank body 1, and the swing shaft 6 is located above the liquid level inside the tank body 1. Preferably, a knob is fixed to the end of the swing shaft 6 located on the outside of the tank body 1 by welding or integral molding. Rotation of the knob from the outside allows for the rotation of the swing shaft 6. The section where the swing shaft 6 penetrates the side wall of the tank body 1 is sealed using a sealing ring. To ensure the overall sealing of tank 1, a swing rod 7 is fixed to the swing shaft 6 by welding or bolts. The bottom end of the swing rod 7 is rotatably connected to a sampling bucket 8 via a pin or hinge. Specifically, the top of the sampling bucket 8 is open, and a bracket is fixed to the top opening by welding or bolts. The bottom end of the swing rod 7 is rotatably connected to the bracket via a pin or hinge. With this structure, when the swing shaft 6 rotates, the swing rod 7 drives the sampling bucket 8 at the bottom to swing, causing the sampling bucket 8 to swing downwards and contact the fermentation liquid below. Because the sampling bucket 8 has a hollow internal structure, the sampling bucket 8 will swing relative to the bottom. After the rod 7 rotates, it floats on the surface of the fermentation liquid. The fermentation liquid in the tank 1 can easily pass through the open opening at the top of the tilted sampling bucket 8 and enter the sampling bucket 8. This allows the sampling bucket 8 to continuously receive fermentation liquid during the swinging process. Compared with the fixed-point sampling method, this structure allows for a wider sampling range of the fermentation liquid and more representative samples, improving the accuracy of the detection and judgment of the fermentation status. In addition, the sampling bucket 8 is located in the closed tank 1 throughout the entire sampling process and will not come into contact with the external environment or operators, ensuring the safety of the sampling process and avoiding the contamination of the fermentation liquid. A sampling seat 9 is welded or bolted to the side wall of the tank body 1 above the liquid surface. The sampling seat 9 is located on the rotation path of the sampling barrel 8 and is used to fix and support the sampling barrel 8. Preferably, the sampling seat 9 is arc-shaped to better contact the arc-shaped side of the sampling barrel 8. The sampling seat 9 is equipped with a suction component for use with the sampling barrel 8. The suction component is used to suction and fix the sampling barrel 8. Preferably, it can be done by vacuum suction or magnetic suction, so that after sampling, the sampling barrel 8 swings to the sampling seat 9 and is fixed to the sampling seat 9 by the suction component. An inclined transfer barrel 10 is fixed to the side wall of the tank body 1 by welding or bolting. The transfer barrel 10 is made of metal and its inclined bottom end The transfer tank 10 extends through the side wall of the tank body 1 to the outside of the tank body 1. The connection between the transfer tank 10 and the tank body 1 is sealed by welding or a sealing ring to ensure the overall airtightness of the tank body 1. A heating jacket 2 is also provided on the outside of the transfer tank 10. Steam is introduced into the heating jacket 2 to achieve high-temperature sterilization of the transfer tank 10. This structure allows for high-temperature sterilization of the transfer tank 10 before and after sampling, thereby ensuring the cleanliness of the air inside the transfer tank 10. When the transfer tank 10 is used in conjunction with the sampling tank 8 for sampling, the clean air inside the transfer tank 10 enters the sampling tank 8 without contamination, ensuring the safety of the sampling. The top and bottom of the transfer tank 10 in the inclined direction are respectively provided with through sampling inlets 11 and 12. The sampling outlet 12 allows the sample to enter the transfer container 10 through the sampling inlet 11. The sample in the transfer container 10 is discharged through the sampling outlet 12. The sampling tube 5 is connected to the sampling outlet 12, and the sampled sample is discharged through the sampling tube 5. The transfer container 10 is equipped with an adjustment component to control the opening and closing of the sampling inlet 11 and the sampling outlet 12. Under the control of the adjustment component, at most one of the sampling inlet 11 and the sampling outlet 12 can be open. This structure allows the adjustment component to simultaneously close the sampling inlet 11 and the sampling outlet 12 during sampling operations, using the heating jacket 2 to sterilize the transfer container 10 at high temperature. Then, the adjustment component controls the sampling inlet 11 to open and the sampling outlet 12 to close, allowing the sample to pass through the sampling inlet 11 into the transfer container 10. The sampling inlet 11 is connected to the interior of the tank 1, allowing the sample to pass through the sampling inlet 11 and enter the transfer tank 10. During this process, the sampling outlet 12 is closed, preventing external bacteria from entering the transfer tank 10 and the tank 1. Only clean air from the transfer tank 10 can enter the tank 1, thus preventing contamination from bacteria entering the tank 1. After the sample has completely entered the transfer tank 10, the regulating component controls the sampling inlet 11 to close and the sampling outlet 12 to open. This allows the sample in the transfer tank 10 to pass through the sampling outlet 12 and exit from the sampling tube 5, completing the sampling operation. During this process, the sampling inlet 11 is closed, preventing outside air from entering the tank 1 through the sampling inlet 11. This ensures that the tank 1 is not directly connected to the external environment throughout the entire sampling process.This significantly reduces the chance of contamination from other microorganisms entering the tank, ensuring the safety of sampling; A connecting pipe 13 is welded or integrally formed on the sampling inlet 11. A through hole 14 is provided on the side wall of the sampling barrel 8. A blocking plate 15, which controls the opening and closing of the through hole 14, is rotatably connected to the inner wall of the sampling barrel 8 via a pin or hinge. Preferably, the blocking plate 15 is arc-shaped to fit the inner wall of the sampling barrel 8, making the sealing of the through hole 14 more tight. A torsion spring 16 is provided between the blocking plate 15 and the inner wall of the sampling barrel 8. Under the action of the blocking plate 15, the through hole 14 remains closed. When the sampling bucket 8 is fixed on the sampling seat 9 by the suction assembly, the connecting pipe 13 extends into the through hole 14 and drives the blocking plate 15 to rotate, thereby opening the through hole 14. Preferably, the diameter of the connecting pipe 13 is smaller than the diameter of the through hole 14, making it easier for the connecting pipe 13 to extend into the through hole 14. A plug is provided on the connecting pipe 13 to cooperate with the through hole 14, which is used to open the through hole 14 from the outside after the connecting pipe 13 extends into the through hole 14. 4. Sealing: To prevent leakage while ensuring communication between the connecting pipe 13 and the sampling bucket 8, the sealing plate 15 closes the through hole 14 during sampling, preventing the fermentation broth sample entering the sampling bucket 8 from leaking out of the through hole 14. After sampling, the sampling bucket 8 swings to the sampling seat 9 and is fixed by the suction assembly. During this process, the connecting pipe 13 extends into the through hole 14 and squeezes the sealing plate 15, driving the sealing plate 15 to rotate and open the through hole 14, allowing the connecting pipe 13 to automatically communicate with the inside of the sampling bucket 8. Afterward, as long as the sampling inlet 11 is opened, the sample in the sampling bucket 8 can automatically flow into the transfer bucket 10. Thus, after the sampling bucket 8 is fixed on the sampling seat 9, the sample inside automatically passes through the through hole 14 and the connecting pipe 13 and flows into the transfer bucket 10, reducing the difficulty of taking samples from the swinging motion and making it more convenient to take samples after swinging sampling. This makes the sampling process more efficient and smooth while ensuring sampling safety.

[0024] Preferred, refer to Figure 3 and Figure 4The adjustment assembly includes a rotating shaft 17 rotatably connected inside the transfer tank 10 via bearings. One end of the rotating shaft 17 extends to the outside of the transfer tank 10, allowing operators to rotate the shaft 17 from the outside. A sealing ring is provided at the point where the rotating shaft 17 passes through the transfer tank 10 to ensure the sealing of the rotating structure. An upper sealing plate 18 and a lower sealing plate 19, which are used to mate with the top and bottom of the transfer tank 10, are fixed to the rotating shaft 17 by welding or bolts. Both the upper sealing plate 18 and the lower sealing plate 19 are rotatably connected to the inner wall of the transfer tank 10 via bearings. Preferably, a sealing ring is provided at the rotatable connection point to ensure the sealing of the upper sealing plate 18 and the lower sealing plate 19 with the inner wall of the transfer tank 10 during rotation. The upper sealing plate 18 is provided with a liquid inlet 20 for use with the sampling inlet 11. When the liquid inlet 20 is aligned with the sampling inlet 11... The sampling inlet 11 is opened, and the liquid inlet 20 penetrates the upper sealing plate 18. The lower sealing plate 19 is provided with a liquid outlet 21 for use with the sampling outlet 12. When the liquid outlet 21 is aligned with the sampling outlet 12, the sampling outlet 12 is opened. The liquid outlet 21 penetrates the lower sealing plate 19. The liquid inlet 20 and the liquid outlet 21 are staggered. Since the sampling inlet 11 and the sampling outlet 12 are located at the relative positions of the top and bottom of the transfer tank 10, when the rotating shaft 17 drives the upper sealing plate 18 and the lower sealing plate 19 to rotate, the staggered liquid inlet 20 and the liquid outlet 21 will not be aligned with the sampling inlet 11 and the sampling outlet 12 at the same time. Therefore, by rotating the rotating shaft 17, at most only one of the sampling inlet 11 and the sampling outlet 12 can be in the open state at the same time, making the opening and closing control of the sampling inlet 11 and the sampling outlet 12 more convenient and flexible.

[0025] Preferably, a triangular indicator block 22 is fixed to the end of the rotating shaft 17 located outside the transfer tank 10 by welding or bolting. Preferably, the triangular indicator block 22 is an isosceles triangle, and its top vertex corresponds to the position of the liquid inlet 20. In this way, the triangular indicator block 22 can display the rotation state of the rotating shaft 17, thereby accurately judging the opening and closing state of the sampling inlet 11 and the sampling outlet 12, thus making the sampling operation more convenient.

[0026] Preferred, refer to Figure 5A fixing seat 23 is fixed to the inner wall of the tank 1 at a position opposite to the sampling seat 9 by welding or bolts, so that the sampling bucket 8 can move to the position of the fixing seat 23 when it swings. The fixing seat 23 is also provided with a suction component for use with the sampling bucket 8, so that when the sampling bucket 8 swings to the position of the fixing seat 23, it can be fixed to the fixing seat 23 by the suction component. A heating plate 24 is provided below the fixing seat 23. The heating plate 24 is connected to an external power system through wires to provide power to the heating plate 24, so that the heating plate 24 can perform heating and sterilization operation when it is powered on. When the sampling bucket 8 is fixed to the fixing seat 23 by the suction component, the heating plate 24 and the sampling bucket 8 are... Since the sampling barrel 8 swings relative to the side wall of the tank 1 under the drive of the swing rod 7, it is not convenient to sterilize it. Therefore, before and after fermentation, the swing shaft 6 can be rotated to make the sampling barrel 8 swing to the fixed seat 23 under the drive of the swing rod 7, and fix it with the suction assembly. At this time, the heating plate 24 contacts the side wall of the sampling barrel 8, and can then heat it to achieve high-temperature sterilization of the inside of the sampling barrel 8. This reduces the content of miscellaneous bacteria inside the sampling barrel 8, ensures the accuracy of the sampling data, and avoids the possible contamination of the fermentation liquid by miscellaneous bacteria in the sampling barrel 8 during sampling, further avoiding the situation of contamination of the fermenter.

[0027] Preferably, a tension spring 25 is bolted between the swing rod 7 and the inner wall of the tank 1 near the sampling seat 9. The tension spring 25 can pull the swing rod 7 when the sampling bucket 8 is fixed on the sampling seat 9 by the suction assembly, thereby further improving the firmness of the sampling bucket 8 on the sampling seat 9 and ensuring the stability of the sample when it is taken out.

[0028] Preferably, the attraction component is a magnetic block 26, which magnetically attracts the side wall of the sampling bucket 8. This structure is relatively simple. As long as the sampling bucket 8 swings to the vicinity of the sampling seat 9, it can automatically attract and fix itself to the sampling seat 9 under the action of magnetic force. At the same time, when sampling again, the swing shaft 6 can be rotated to make the sampling bucket 8 overcome the attraction with the magnetic block 26 and automatically separate the sampling bucket 8 from the sampling seat 9, thus making the fixing and separation of the sampling bucket 8 more convenient and efficient.

[0029] Preferably, the fixed base 23 has a through notch 27, and the magnetic block 26 is movably connected within the notch 27. A pull rod 28 is slidably connected to the side wall of the tank body 1, penetrating the side wall of the tank body 1 and slidably connected thereto. The magnetic block 26 is fixed to the end of the pull rod 28 by welding or bolting. When the pendulum 7 swings to take samples, it will stretch the tension spring 25. Therefore, when the pendulum 7 swings to the point where the sampling bucket 8 is fixed to the fixed base 23, the pendulum 7 has a tendency to swing back to its original position under the action of the tension spring 25. Therefore, the magnetic block on the fixed base 23... The suction force between the sampling block 26 and the sampling container 8 also needs to be set to be greater, which increases the difficulty of separating the sampling container 8 from the fixed base 23. Therefore, when the sampling container 8 needs to be separated from the fixed base 23 for sampling, the pull rod 28 is pulled horizontally, which causes the magnetic block 26 at the end to actively leave the notch 27. The sampling container 8 is blocked by the fixed base 23 and will not move with the pull rod 28. In this way, the magnetic block 26 and the sampling container 8 can be actively separated, so that the sampling container 8 can automatically separate from the fixed base 23 after losing the fixation of the magnetic block 26 and then swing to sample, which improves the convenience of sampling operation after the sampling container 8 is sterilized at high temperature.

[0030] Preferably, a compression spring 29 is provided between the magnetic block 26 and the side wall of the tank 1. A stop block 30 is fixed on the pull rod 28 at the outer side of the tank 1 by welding or integral molding. Under the elastic force of the compression spring 29, the magnetic block 26 moves toward the notch 27. When the magnetic block 26 enters the notch 27, the stop block 30 on the pull rod 28 contacts the outer wall of the tank 1, thereby restricting the position of the magnetic block 26 and keeping it stably in the notch 27. When the pull rod 28 is pulled outward, the compression spring 29 between the magnetic block 26 and the inner wall of the tank 1 is compressed. After the magnetic block 26 is separated from the sampling bucket 8, the pull rod 28 is released, and the magnetic block 26 can automatically slide back into the notch 27 under the elastic force of the compression spring 29, preparing for the next fixation of the sampling bucket 8. This simplifies the steps of separating the magnetic block 26 from the notch 27 and improves the convenience of separating the sampling bucket 8 from the fixing seat 23.

[0031] Preferred, refer to Figure 6 The bottom of the tank 1 is fixed with multiple support legs 31 by welding or bolts. The bottom of the support legs 31 is rotatably connected with rollers 32. This structure makes it easy to move the tank 1 by pushing it with the rollers 32, which facilitates cleaning or changing the position of the tank 1. The tank 1 is provided with multiple observation windows 33. The observation windows 33 are sealed with transparent glass. The fermentation status can be roughly judged through the observation windows 33, which improves the convenience of controlling the fermentation status.

[0032] Preferably, the ends of the connecting tube 13 are symmetrically fixed with top blocks 34 by welding or integral molding. The top blocks 34 are in contact with the blocking plate 15. With this structure, when the connecting tube 13 extends into the through hole 14 and pushes open the blocking plate 15, the top blocks 34 contact the blocking plate 15 and squeeze it, so that when the blocking plate 15 is rotated open, the blocking plate 15 will not block the end of the connecting tube 13. This allows the sample in the sampling bucket 8 to smoothly enter the connecting tube 13, ensuring the smooth flow of the sample toward the transfer bucket 10.

[0033] Working Principle: The structure of this invention features a rotatable swing shaft 6 inside the tank 1, with a swing rod 7 fixed to the swing shaft 6. A sampling bucket 8 is rotatably connected to the bottom end of the swing rod 7. A sampling seat 9 is located on the side wall above the liquid surface inside the tank 1, and the sampling seat 9 is equipped with a suction assembly for use with the sampling bucket 8. When sampling and testing the liquid inside the tank 1, the swing shaft 6 is rotated from the outside, causing the swing rod 7 inside to swing. This causes the sampling bucket 8 at the bottom end of the swing rod 7 to contact the liquid inside the tank 1 through the swing. During the contact process, the sampling bucket 8 tilts and rotates under the action of buoyancy. The movement allows liquid to enter the sampling bucket 8, increasing the sampling range of the sampling bucket 8 compared to traditional fixed-point sampling. This makes the sample more representative and can more accurately reflect the fermentation situation inside the tank 1. The entire sampling process is conducted in a closed loop, ensuring accuracy and safety. An inclined transfer bucket 10 is installed on the side wall of the tank 1. A heating jacket 2 is located on the outside of the transfer bucket 10. Sampling inlets 11 and outlets 12 are located at the top and bottom of the transfer bucket 10 along its inclined direction, respectively. The sampling tube 5 is connected to the sampling outlet 12. The transfer bucket 10 is equipped with a control... An adjustment component controls the opening and closing of the sampling inlet 11 and the sampling outlet 12. Under the control of this component, at most one of the sampling inlet 11 and the sampling outlet 12 can be open. This structure simultaneously closes the sampling inlet 11 and the sampling outlet 12 before and after sampling. High-temperature sterilization of the transfer container 10 is achieved through the heating jacket 2, ensuring the purity of the air inside the transfer container 10 and reducing the chance of contamination by other microorganisms. During sampling, the adjustment component opens the sampling inlet 11 and closes the sampling outlet 12, connecting the transfer container 10 and the sampling container 8. At this time, the sample inside the sampling container 8 flows into the transfer container 10 through the sampling inlet 11. Inside the transfer tank 10, since the sampling outlet 12 is closed during this process, bacteria from the external environment will not enter the transfer tank 10 or the sampling tank 8, thus effectively avoiding bacterial contamination. After the sample in the sampling tank 8 is drained, the regulating component controls the sampling outlet 12 to open and the sampling inlet 11 to close. The sample in the transfer tank 10 is discharged through the sampling tube 5 connected to the sampling outlet 12. During this process, since the sampling inlet 11 is closed, bacteria from the outside will still not enter the sampling tank 8. The entire sampling process effectively avoids the possibility of bacteria from the outside entering the tank 1, effectively reducing the chance of contamination.A connecting pipe 13 is connected to the sampling inlet 11. A through hole 14 is provided on the side wall of the sampling barrel 8. A blocking plate 15 is rotatably connected to the inner wall of the sampling barrel 8 to control the opening and closing of the through hole 14. A torsion spring 16 is provided between the blocking plate 15 and the inner wall of the sampling barrel 8. When the sampling barrel 8 is fixed on the sampling seat 9 by the suction assembly, the connecting pipe 13 extends into the through hole 14 and drives the blocking plate 15 to rotate, thereby opening the through hole 14. With this structure, when the sampling barrel 8 swings to the sampling seat 9 and is fixed by the suction assembly, the connecting pipe 13 passes through the through hole 14 and contacts the blocking plate 15. After squeezing the blocking plate 15, it drives it to rotate and open the through hole 14, so that the connecting pipe 13 automatically connects with the sampling barrel 8. This allows the sample in the sampling barrel 8 to automatically pass through the through hole 14 and the connecting pipe 13 and flow into the transfer barrel 10, thereby making the sampling process smoother and the sampling operation of the sample in the swinging sampling barrel 8 more efficient and smoother. ;

Claims

1. A liquid fermentation tank device for avoiding contamination by miscellaneous bacteria, comprising a tank body (1), a heating jacket (2) provided on the outside of the tank body (1), a cover (3) provided on the top of the tank body (1), a discharge pipe (4) provided on the bottom of the tank body (1), and a sampling pipe (5) provided on the tank body (1), characterized in that: The tank body (1) is rotatably connected to a swing shaft (6), one end of which extends to the outside of the tank body (1). A swing rod (7) is fixed on the swing shaft (6), and a sampling bucket (8) is rotatably connected to the bottom of the swing rod (7). A sampling seat (9) is provided on the side wall above the liquid surface inside the tank body (1). A suction assembly for use with the sampling bucket (8) is provided on the sampling seat (9). An inclined transfer bucket (10) is provided on the side wall of the tank body (1). A heating jacket (2) is also provided on the outside of the transfer bucket (10). A sampling inlet (11) and a sampling outlet (12) are respectively provided at the top and bottom of the transfer bucket (10) in the inclined direction. The sampling tube (5) is connected to the sampling outlet (12). The transfer bucket (10) is provided with an adjustment component for controlling the opening and closing of the sampling inlet (11) and the sampling outlet (12). Under the control of the adjustment component, at most one of the sampling inlet (11) and the sampling outlet (12) can be in the open state. A connecting pipe (13) is connected to the sampling inlet (11). A through hole (14) is provided on the side wall of the sampling bucket (8). A blocking plate (15) for controlling the opening and closing of the through hole (14) is rotatably connected to the inner wall of the sampling bucket (8). A torsion spring (16) is provided between the blocking plate (15) and the inner wall of the sampling bucket (8). When the sampling bucket (8) is fixed on the sampling seat (9) by the suction component, the connecting pipe (13) extends into the through hole (14) and drives the blocking plate (15) to rotate, thereby opening the through hole (14). The adjustment assembly includes a rotating shaft (17) rotatably connected inside the transfer tank (10). One end of the rotating shaft (17) extends to the outside of the transfer tank (10). The rotating shaft (17) is provided with an upper sealing plate (18) and a lower sealing plate (19) for use with the top and bottom of the transfer tank (10). Both the upper sealing plate (18) and the lower sealing plate (19) are rotatably connected to the inner wall of the transfer tank (10). The upper sealing plate (18) is provided with a liquid inlet (20) for use with the sampling inlet (11), and the lower sealing plate (19) is provided with a liquid outlet for use with the sampling outlet (12). Holes (21), the inlet hole (20) and outlet hole (21) are staggered. A fixed seat (23) is provided on the inner wall of the tank (1) opposite to the sampling seat (9). A suction assembly for use with the sampling bucket (8) is also provided on the fixed seat (23). A heating plate (24) is provided below the fixed seat (23). When the sampling bucket (8) is fixed on the fixed seat (23) by the suction assembly, the heating plate (24) contacts the side wall of the sampling bucket (8). A top block (34) is symmetrically provided at the end of the connecting pipe (13). The top block (34) contacts the blocking plate (15).

2. The liquid fermentation tank device for avoiding contamination by miscellaneous bacteria according to claim 1, characterized in that: A triangular indicator block (22) is provided at the end of the rotating shaft (17) located outside the transfer barrel (10).

3. The liquid fermentation tank device for avoiding contamination by miscellaneous bacteria according to claim 1, characterized in that: A tension spring (25) is provided between the swing arm (7) and the inner wall of the tank (1) near the sampling seat (9).

4. The liquid fermentation tank device for avoiding contamination by miscellaneous bacteria according to claim 3, characterized in that: The attraction component is a magnetic block (26), which magnetically attracts the side wall of the sampling bucket (8).

5. The liquid fermentation tank device for avoiding contamination by miscellaneous bacteria according to claim 4, characterized in that: The fixed base (23) is provided with a notch (27), the magnetic block (26) is movably connected in the notch (27), and a pull rod (28) is slidably connected on the side wall of the tank (1), and the magnetic block (26) is fixed to the end of the pull rod (28).

6. The liquid fermentation tank apparatus for avoiding contamination by miscellaneous bacteria according to claim 5, characterized in that: A compression spring (29) is provided between the magnetic block (26) and the side wall of the tank (1), and a stop block (30) is provided on the pull rod (28) at the position outside the tank (1).

7. The liquid fermentation tank device for avoiding contamination by miscellaneous bacteria according to claim 1, characterized in that: The bottom of the tank (1) is provided with multiple support legs (31), the bottom of the support legs (31) is provided with rollers (32), and the tank (1) is provided with multiple observation windows (33).

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