Microorganism dissolved oxygen synergistic stirring device capable of efficiently stirring

Abstract

The utility model discloses a microorganism dissolved oxygen synergistic stirring device with high stirring efficiency, which belongs to the technical field of stirring devices and comprises a fermentation tank, a stirring motor is bolted to the top of the fermentation tank, a stirring shaft is fixedly connected to the output end of the stirring motor, two stirring impellers are bolted to the stirring shaft, and the stirring impeller is fixedly connected to the output end of the stirring motor. The stirring motor, the stirring shaft and the stirring impeller are arranged, microorganisms in the fermentation tank can be stirred, oxygen can be conveyed to the bottom of the fermentation tank through cooperation of the oxygen supply pump, the connecting pipe, the rotating sleeve, the aeration pipe and the aeration holes, and the microorganisms in the fermentation tank can be stirred. The microorganisms are in full contact with oxygen in the stirring process, so that the contact amount of the oxygen and the microorganisms is increased, the oxygen is quickly dissolved in the microorganisms, and the content of dissolved oxygen in the microorganisms is increased.

Description

Technical Field

[0001] This utility model relates to the field of stirring device technology, and in particular to a microbial dissolved oxygen-enhancing stirring device with high stirring efficiency. Background Technology

[0002] In the field of biotechnology, microbial fermentation is a crucial process, and its efficiency and quality often depend on a variety of factors, among which the dissolved oxygen content is particularly critical. Microorganisms need sufficient oxygen to maintain their life activities during growth and metabolism. Especially in high-density fermentation, the concentration of dissolved oxygen directly affects the growth rate, product yield, and fermentation cycle of microorganisms. Therefore, how to effectively increase the dissolved oxygen content in microbial solutions has always been one of the hot topics and challenges in the field of biotechnology.

[0003] Most existing agitators are arrow-shaped, which makes it difficult to fully utilize oxygen, resulting in insufficient dissolved oxygen and a large number of bubbles in the fermentation broth. Some microorganisms, due to contact with the fermentation tank, are easily adsorbed onto the inner wall of the fermentation tank, causing incomplete fermentation. Commercially available fermentation tanks generally use external jackets for temperature regulation, but due to the long lag in temperature transfer within the substrate during fermentation, it is easy to cause a temperature difference between the inside and outside of the fermentation broth, reducing fermentation quality.

[0004] The existing patent (publication number: CN210560408U) discloses a multi-stirring fermenter for continuous microbial fermentation. The fermenter has an internal stirring device located on the lid at the top of the fermenter. The main stirring shaft and the auxiliary stirring shaft are located inside the fermenter. The main stirring shaft is connected to the auxiliary stirring shaft via a transmission device. The transmission device is connected to the main stirring shaft via a spline connection. The main stirring shaft is connected to a connecting rod, and the upper part of the connecting rod is connected to a motor. Two fan-shaped blades are installed on each auxiliary stirring shaft.

[0005] To address the aforementioned issues, existing patents have provided solutions, but these solutions suffer from the problem of not being able to supply oxygen into the fermenter to increase the dissolved oxygen content of microorganisms inside the stirred tank, and also from not being able to stir the oxygen and microorganisms to allow the oxygen to dissolve rapidly in the microorganisms.

[0006] Therefore, a microbial dissolved oxygen-enhancing stirring device with high stirring efficiency is proposed. Utility Model Content

[0007] The purpose of this invention is to provide a highly efficient microbial dissolved oxygen enhancing stirring device, which can solve the problems of existing multi-stirring fermenters for continuous microbial fermentation that cannot deliver oxygen into the fermenter to increase the dissolved oxygen content of microorganisms inside the stirring tank, and that cannot stir the oxygen and microorganisms to allow the oxygen to dissolve quickly in the microorganisms.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a highly efficient microbial dissolved oxygen-enhancing stirring device, comprising a fermenter, a stirring motor bolted to the top of the fermenter, a stirring shaft fixedly connected to the output end of the stirring motor, two stirring impellers bolted to the stirring shaft, a rotating sleeve provided at the bottom of the fermenter, multiple aeration pipes provided on the side wall of the rotating sleeve, multiple aeration holes provided at the bottom of the aeration pipes, a connecting pipe fixedly connected to the bottom of the rotating sleeve, the connecting pipe connected to a bearing of the fermenter, a support plate provided at the bottom of the fermenter, an oxygen supply pump bolted to the bottom of the support plate, a bearing head fixedly connected to the output end of the oxygen supply pump, the bearing head connected to the bottom of the connecting pipe, a driving mechanism for driving the connecting pipe to rotate provided at the top of the support plate, and a circulation mechanism provided on the side wall of the fermenter.

[0009] Preferably, the driving mechanism includes a drive motor disposed on the top of the support plate, a drive wheel fixedly connected to the output end of the drive motor, a driven wheel disposed in the middle of the connecting pipe, and a transmission belt disposed between the drive wheel and the driven wheel.

[0010] Preferably, the circulation mechanism includes a circulation pipe disposed on the side wall of the fermenter, a connecting ring pipe disposed inside the fermenter, the top of the circulation pipe being connected to the connecting ring pipe, a plurality of nozzles disposed on the side wall of the connecting ring pipe, the bottom of the circulation pipe being connected to the bottom of the fermenter, and a circulation pump being bolted to the side wall of the fermenter, the output end and input end of the circulation pump being connected to the circulation pipe.

[0011] Preferably, a liquid level pipe is provided on the side wall of the fermenter, and both ends of the liquid level pipe are connected to the stirring tank. The liquid level pipe is made of transparent material.

[0012] Preferably, the movement of the connecting pipe is opposite to that of the stirring shaft.

[0013] Preferably, a guide cone is provided on the inner wall of the rotating sleeve, and the guide cone is located at the center of the rotating sleeve.

[0014] Preferably, a support base is fixedly connected to the top of the support plate, and the support base is connected to the bearing of the connecting pipe.

[0015] Preferably, the fermenter has an inspection port at the bottom, and an inspection cover is bolted to the side wall of the inspection port.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This application, by incorporating a stirring motor, stirring shaft, and stirring impeller, can stir the microorganisms inside the fermenter. Through the cooperation of an oxygen supply pump, connecting pipe, rotating sleeve, aeration pipe, and aeration holes, oxygen can be supplied to the bottom of the fermenter. During the stirring process, the microorganisms have sufficient contact with oxygen, increasing the amount of oxygen in contact with the microorganisms, allowing oxygen to dissolve quickly in the microorganisms, and increasing the dissolved oxygen content in the microorganisms. Driven by the drive mechanism, the aeration pipe rotates at the bottom of the fermenter, further increasing the amount of oxygen in contact with the microorganisms and improving the efficiency of microbial stirring and fermentation.

[0018] 2. This application incorporates a circulation mechanism. In this process, a circulation pump transports the microorganisms from the bottom of the fermenter to the top of the fermenter and disperses them by spraying. This allows the microorganisms to have sufficient contact with oxygen during the circulation spraying process, thereby further increasing the dissolved oxygen content in the microorganisms. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is an overall structural view of the present invention;

[0021] Figure 2 This is a front view of the present invention;

[0022] Figure 3 This utility model Figure 2 A three-dimensional cross-sectional view of point AA in the middle;

[0023] Figure 4 This is the left view of the present invention;

[0024] Figure 5 This utility model Figure 4 A three-dimensional cross-sectional view of the middle BB section.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Fermentation tank; 21. Stirring motor; 22. Stirring shaft; 23. Stirring impeller; 24. Rotating sleeve; 25. Aeration pipe; 26. Aeration hole; 27. Connecting pipe; 28. Support plate; 29. ​​Oxygen supply pump; 210. Bearing head; 3. Drive mechanism; 4. Circulation mechanism; 31. Drive motor; 32. Driving wheel; 33. Driven wheel; 34. Transmission belt; 41. Circulation pipe; 42. Connecting ring pipe; 43. Nozzle; 44. Circulation pump; 5. Liquid level pipe; 6. Guide cone; 7. Support base; 8. Inspection port; 9. Inspection cover. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1 to 5 This utility model provides a technical solution:

[0029] A highly efficient microbial dissolved oxygen-enhancing stirring device includes a fermenter 1. A stirring motor 21 is bolted to the top of the fermenter 1, and a stirring shaft 22 is fixedly connected to the output end of the stirring motor 21. Two stirring impellers 23 are bolted to the stirring shaft 22. A rotating sleeve 24 is provided at the bottom of the fermenter 1. Multiple aeration pipes 25 are provided on the side wall of the rotating sleeve 24, and multiple aeration holes 26 are provided at the bottom of the aeration pipes 25. A connecting pipe 27 is fixedly connected to the bottom of the rotating sleeve 24 and is connected to a bearing of the fermenter 1. A support plate 28 is provided at the bottom of the fermenter 1, and an oxygen supply pump 29 is bolted to the bottom of the support plate 28. A bearing head 210 is fixedly connected to the output end of the oxygen supply pump 29 and is connected to the bottom of the connecting pipe 27. A driving mechanism 3 for driving the connecting pipe 27 to rotate is provided at the top of the support plate 28. A circulation mechanism 4 is provided on the side wall of the fermenter 1.

[0030] Specifically, such as Figure 5 As shown, the drive mechanism 3 includes a drive motor 31 mounted on the top of the support plate 28. The output end of the drive motor 31 is fixedly connected to a drive wheel 32. A driven wheel 33 is mounted in the middle of the connecting pipe 27. A transmission belt 34 is mounted between the drive wheel 32 and the driven wheel 33.

[0031] Specifically, such as Figure 5 As shown, the movement of the connecting pipe 27 is opposite to that of the stirring shaft 22.

[0032] Specifically, such as Figure 5As shown, a guide cone 6 is provided on the inner wall of the rotating sleeve 24, and the guide cone 6 is located at the center of the rotating sleeve 24.

[0033] Specifically, such as Figure 5 As shown, a support base 7 is fixedly connected to the top of the support plate 28, and the support base 7 is connected to the bearing of the connecting pipe 27.

[0034] Specifically, such as Figure 5 As shown, the bottom of the fermenter 1 is provided with an inspection port 8, and an inspection cover 9 is bolted to the side wall of the inspection port 8.

[0035] The principle lies in combining stirring and aeration functions to improve dissolved oxygen efficiency during microbial fermentation. Specifically, when the device is running, the stirring motor 21 starts, driving the stirring shaft 22 and its two impellers 23 to rotate, efficiently stirring the microbial culture medium in the fermenter 1 to promote uniform distribution of microorganisms and thorough mixing of nutrients. Simultaneously, the rotating sleeve 24 located at the bottom of the fermenter 1 is driven to rotate by the drive mechanism 3 (composed of a drive motor 31, a driving wheel 32, a driven wheel 33, and a transmission belt 34). Multiple aeration pipes 25 are installed on the side wall of the rotating sleeve 24. As it rotates, the aeration holes 26 at the bottom of the aeration pipe 25 release oxygen into the culture medium. Since the connecting pipe 27 moves in the opposite direction to the stirring shaft 22, this reverse rotation design helps to further enhance the stirring effect and the uniform distribution of oxygen. The oxygen supply pump 29 is connected to the connecting pipe 27 through the bearing head 210 to provide a stable oxygen supply to the aeration pipe 25. In addition, the guide cone 6 set on the inner wall of the rotating sleeve 24 helps to guide the delivery of oxygen. In this way, efficient stirring and full aeration of the microbial culture medium are achieved, effectively improving the dissolved oxygen efficiency and promoting the growth and metabolism of microorganisms.

[0036] Specifically, such as Figure 3 As shown, the circulation mechanism 4 includes a circulation pipe 41 disposed on the side wall of the fermenter 1, a connecting ring pipe 42 disposed inside the fermenter 1, the top of the circulation pipe 41 being connected to the connecting ring pipe 42, a plurality of nozzles 43 being disposed on the side wall of the connecting ring pipe 42, the bottom of the circulation pipe 41 being connected to the bottom of the fermenter 1, and a circulation pump 44 being bolted to the side wall of the fermenter 1, the output end and input end of the circulation pump 44 being connected to the circulation pipe 41.

[0037] Specifically, such as Figure 3 As shown, a liquid level pipe 5 is provided on the side wall of the fermenter 1. Both ends of the liquid level pipe 5 are connected to the mixing tank. The liquid level pipe 5 is made of transparent material.

[0038] The circulation mechanism 4 enhances the mixing and mass transfer effect during the microbial fermentation process. Specifically, the circulation mechanism 4 consists of a circulation pipe 41 installed on the side wall of the fermenter 1, a connecting ring pipe 42 inside the fermenter 1, multiple nozzles 43, a circulation pump 44, and a liquid level pipe 5. After the circulation pump 44 is started, the culture medium at the bottom of the fermenter 1 is pumped to the connecting ring pipe 42 through the circulation pipe 41. The multiple nozzles 43 on the connecting ring pipe 42 spray the culture medium evenly into the fermenter 1, forming a circulation flow. This circulation flow not only helps to further distribute dissolved oxygen evenly, but also promotes the interaction between microorganisms and the exchange of nutrients, thereby improving fermentation efficiency. At the same time, the liquid level pipe 5 serves as an observation window, which can display the liquid level in the fermenter 1 in real time, making it convenient for operators to monitor and adjust the fermentation process.

[0039] By adopting the above technical solution, the problems of existing multi-stirring fermentation tank 1 for continuous microbial fermentation, such as the inability to supply oxygen to the interior of fermentation tank 1 to increase the dissolved oxygen content of microorganisms inside the stirred tank, and the inability to stir oxygen and microorganisms to make oxygen dissolve quickly in microorganisms, are solved.

[0040] Working principle: When in use, the stirring motor 21 is first started, driving the stirring shaft 22 and its two impellers 23 to rotate, which efficiently stirs the microbial culture medium in the fermenter 1. The drive motor 31 drives the drive wheel 32 to rotate, which drives the connecting pipe 27 to rotate through the driven wheel 33 and the transmission belt 34. The multiple aeration pipes 25 set on the side wall of the rotating sleeve 24 rotate accordingly. The liquid supply pump delivers oxygen to the aeration pipes 25, and the aeration holes 26 at the bottom of the aeration pipes 25 release oxygen into the culture medium. Since the connecting pipe 27 moves in the opposite direction to the stirring shaft 22, the stirring effect and the uniform distribution of oxygen are enhanced. After the circulation pump 44 is started, the culture medium at the bottom of the fermenter 1 is pumped to the connecting ring pipe 42 through the circulation pipe 41. The multiple nozzles 43 on the connecting ring pipe 42 spray the culture medium evenly into the fermenter 1, forming a circulation flow. This circulation flow not only helps to further distribute dissolved oxygen evenly, but also promotes the interaction between microorganisms and the exchange of nutrients, thereby improving the fermentation efficiency.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A highly efficient microbial dissolved oxygen-enhancing stirring device, comprising a fermenter (1), characterized in that: A stirring motor (21) is bolted to the top of the fermentation tank (1). A stirring shaft (22) is fixedly connected to the output end of the stirring motor (21). Two stirring impellers (23) are bolted to the stirring shaft (22). A rotating sleeve (24) is provided at the bottom of the fermentation tank (1). Multiple aeration pipes (25) are provided on the side wall of the rotating sleeve (24). Multiple aeration holes (26) are provided at the bottom of the aeration pipes (25). A connecting pipe (27) is fixedly connected to the bottom of the rotating sleeve (24). The connecting pipe (27) is connected to the bearing of the fermenter (1). The bottom of the fermenter (1) is provided with a support plate (28). An oxygen pump (29) is bolted to the bottom of the support plate (28). The output end of the oxygen pump (29) is fixedly connected to a bearing head (210). The bearing head (210) is connected to the bottom of the connecting pipe (27). The top of the support plate (28) is provided with a drive mechanism (3) for driving the connecting pipe (27) to rotate. A circulation mechanism (4) is provided on the side wall of the fermenter (1).

2. The microbial dissolved oxygen-enhancing stirring device with high stirring efficiency according to claim 1, characterized in that: The drive mechanism (3) includes a drive motor (31) disposed on the top of the support plate (28). The output end of the drive motor (31) is fixedly connected to a drive wheel (32). A driven wheel (33) is disposed in the middle of the connecting pipe (27). A transmission belt (34) is disposed between the drive wheel (32) and the driven wheel (33).

3. The microbial dissolved oxygen-enhancing stirring device with high stirring efficiency according to claim 1, characterized in that: The circulation mechanism (4) includes a circulation pipe (41) disposed on the side wall of the fermenter (1), a connecting ring pipe (42) disposed inside the fermenter (1), the top of the circulation pipe (41) being connected to the connecting ring pipe (42), a plurality of nozzles (43) being disposed on the side wall of the connecting ring pipe (42), the bottom of the circulation pipe (41) being connected to the bottom of the fermenter (1), and a circulation pump (44) being bolted to the side wall of the fermenter (1), the output end and input end of the circulation pump (44) being connected to the circulation pipe (41).

4. The microbial dissolved oxygen-enhancing stirring device with high stirring efficiency according to claim 1, characterized in that: A liquid level pipe (5) is provided on the side wall of the fermentation tank (1). The two ends of the liquid level pipe (5) are connected to the stirring tank. The liquid level pipe (5) is made of transparent material.

5. The microbial dissolved oxygen-enhancing stirring device with high stirring efficiency according to claim 1, characterized in that: The movement of the connecting pipe (27) is opposite to that of the stirring shaft (22).

6. The microbial dissolved oxygen-enhancing stirring device with high stirring efficiency according to claim 1, characterized in that: A guide cone (6) is provided on the inner wall of the rotating sleeve (24), and the guide cone (6) is located at the center of the rotating sleeve (24).

7. The microbial dissolved oxygen-enhancing stirring device with high stirring efficiency according to claim 1, characterized in that: The top of the support plate (28) is fixedly connected to a support base (7), and the support base (7) is connected to the connecting pipe (27) by a bearing.

8. The microbial dissolved oxygen-enhancing stirring device with high stirring efficiency according to claim 1, characterized in that: The fermenter (1) is provided with an inspection port (8) at the bottom, and an inspection cover (9) is bolted to the side wall of the inspection port (8).

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