Stirring mechanism for biological fermentation tank

Abstract

The utility model provides a stirring mechanism for a biological fermentation tank. The stirring mechanism comprises a servo motor and a rotating shaft driven by the servo motor, the first stirrer is mounted on the rotating shaft; the device further comprises a fluid director, and the first stirrer is located in a discharging barrel of the fluid director. A second stirrer is mounted at the bottom end, far away from the fluid director, of the rotating shaft, and the second stirrer is positioned at the bottom of the fermentation tank; the fluid director comprises a disc, and the disc is mounted on the inner wall of the fermentation tank; the fluid director further comprises a discharging barrel. According to the utility model, the fluid director and the stirrer are matched for use, layering and dead zones of liquid are reduced through the second stirrer, and effective contact of liquid, gas and microorganisms is promoted. According to the invention, nutrient substances and gas can be uniformly distributed in the fermentation liquid, the requirements of growth and metabolism of microorganisms are met, meanwhile, the situation of larger bubble volume is prevented through the fluid director, small bubbles are more convenient to fully contact with the liquid, and the solubility of the gas is enhanced.

Description

Technical Field

[0001] This utility model belongs to the field of bio-fermentation technology, and specifically relates to a stirring mechanism for bio-fermentation tanks. Background Technology

[0002] Fermentation is the process by which microorganisms grow and metabolize under specific conditions to form a certain product. Stirring is a crucial part of the fermentation process.

[0003] Most existing mixing mechanisms employ propeller blades or high-efficiency multi-stage agitators. These mechanisms help generate sufficient turbulence in the liquid, avoiding localized laminar flow effects. In practical applications, excessive agitation can cause shear damage to microorganisms, while insufficient agitation is inadequate to effectively break large bubbles into smaller ones. This results in a small contact area between the gas and liquid, hindering the effective dissolution of the gas. Utility Model Content

[0004] In view of the problems existing in the background art, the present invention provides a stirring mechanism for a bio-fermentation tank, comprising:

[0005] Servo motor,

[0006] A rotating shaft driven by a servo motor;

[0007] The first agitator is mounted on the rotating shaft;

[0008] It also includes a flow guide, and the first agitator is located inside the feed cylinder of the flow guide;

[0009] A second stirrer is installed at the bottom end of the rotating shaft away from the flow guide, and the second stirrer is located at the bottom of the fermentation tank;

[0010] The flow guide includes a disc, and the disc is installed on the inner wall of the fermenter;

[0011] The flow guide also includes a feed cylinder.

[0012] Optionally, connecting rods integrally formed with the ear plates located at both ends of the feed cylinder are provided.

[0013] The other end of the connecting rod is installed on the inner wall of the sealing cover of the fermenter.

[0014] Optionally, fan blades are provided between the inner wall of the disc and the outer wall of the feed cylinder.

[0015] The fan blades are arranged in multiple groups and are evenly distributed along the circumference of the disk;

[0016] Furthermore, the fan blades are tilted at an angle of 18°.

[0017] Optionally, a through hole is provided on the feed cylinder near the servo motor.

[0018] Optionally, the second agitator includes a mixing disc.

[0019] The mixing plate is provided with a first mixing tooth and a second mixing tooth integrated therewith.

[0020] The first and second stirring teeth are arranged in multiple sets.

[0021] The components are evenly distributed along the circumference of the mixing plate.

[0022] Optionally, the first stirring teeth extend in a direction away from the servo motor.

[0023] The first stirring tooth is set at an angle of 30°-90° to the stirring plate;

[0024] The second stirring tooth extends toward the direction close to the servo motor.

[0025] The second stirring tooth is set at an angle of 30°-90° to the stirring plate;

[0026] The tooth pitch between the first and second stirring teeth in two adjacent groups is 3 mm.

[0027] In summary, the beneficial effects of this utility model are as follows:

[0028] This invention utilizes the combined use of a flow guide and a stirrer. When the stirring teeth are at a 35° angle to the stirring plate and the tooth spacing is 3mm, the second stirrer generates turbulence and breaks up the stratification effect in the liquid. Especially at the bottom of the fermenter, the stirrer can agitate the liquid flow from the bottom, reducing stratification and dead zones, and promoting effective contact between liquid, gas, and microorganisms. This ensures that nutrients and gases are evenly distributed in the fermentation broth, meeting the needs of microbial growth and metabolism. Furthermore, the flow guide prevents large bubbles from forming, allowing smaller bubbles to make better contact with the liquid and enhancing gas solubility. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the first embodiment of the stirring mechanism of this utility model for a bio-fermentation tank;

[0030] Figure 2 This is a schematic diagram of the flow guide structure of the first embodiment of the stirring mechanism for a bio-fermentation tank of the present invention;

[0031] Figure 3 This is a schematic diagram of the second stirrer structure in the first embodiment of the stirring mechanism for a bio-fermentation tank of this utility model.

[0032] Figure label:

[0033] 100. Stirring mechanism;

[0034] 10. Servo motor;

[0035] 20. Connecting rod;

[0036] 30. Shaft;

[0037] 40. First mixer;

[0038] 50. Flow guide; 501. Fan blade; 502. Feeding cylinder; 503. Disc; 504. Ear plate; 505. Through hole; 506. Feeding end;

[0039] 60. Stirring shaft;

[0040] 70. Second stirrer; 701. Stirring plate; 702. First stirring teeth; 703. Second stirring teeth. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. Although exemplary embodiments are disclosed in the drawings, it should be understood that the present utility model can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to facilitate a more thorough understanding of the present utility model and to fully convey the concept of the present utility model to those skilled in the art.

[0042] In the description of this specification, the references to terms such as "certain embodiments," "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0043] In this utility model, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "join," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "join" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] Please see Figure 1-3 As shown, this embodiment provides a stirring mechanism 100 for a bio-fermentation tank, including a servo motor 10, and the drive end of the servo motor 10 is connected to a rotating shaft 30 through a bearing assembly, and a first stirrer 40 is provided on the rotating shaft 30. The first stirrer 40 and the rotating shaft 30 are detachably connected; for example, they are connected by a coupling; the first stirrer 40 is located inside the feed cylinder of the guide 50.

[0045] During installation, the servo motor 10 is first fixed to the outer wall of the sealing cover of the fermenter with fastening screws. Then the drive end of the servo motor 10 passes through the sealing cover and extends into the body of the fermenter.

[0046] The stirring mechanism 100 also includes a flow guide 50; and the flow guide 50 is installed on the sealing cover of the bio-fermentation tank via a connecting rod 20.

[0047] A second stirrer 70 is installed at the bottom end of the rotating shaft 30, which is away from the flow guide 50, and the second stirrer 70 is located at the bottom of the fermentation tank.

[0048] This invention utilizes the combined use of a flow guide and a stirrer. When the stirring teeth (first and second stirring teeth) are at a 35° angle to the stirring plate and the tooth spacing is 3mm, the second stirrer generates turbulence and breaks up the stratification effect in the liquid through stirring. Especially at the bottom of the fermenter, the stirrer can agitate the liquid flow from the bottom, reducing stratification and dead zones, and promoting effective contact between liquid, gas, and microorganisms. This ensures that nutrients and gases are evenly distributed in the fermentation broth, meeting the needs of microbial growth and metabolism, while the flow guide prevents the formation of large air bubbles.

[0049] Furthermore, the flow guide 50 includes a disc 503, and the disc 503 is fixedly installed on the inner wall of the fermenter by a fixed connection (e.g., fastening screws / bolts).

[0050] The flow guide 50 also includes a feeding cylinder 502. Connecting rods 20 are integrally formed on the ear plates at both ends of the feeding cylinder 502. The other end of the connecting rods 20 is installed on the inner wall of the sealing cover of the fermenter by a fixed connection (e.g., welding, fastening screws).

[0051] Furthermore, a fan blade 501 is provided between the inner wall of the disc 503 and the outer wall of the feed cylinder 502. The fan blade 501 is provided in multiple sets and is evenly distributed along the circumference of the disc 503.

[0052] Furthermore, the fan blade 501 is inclined at an angle of 18°.

[0053] Furthermore, a through hole 505 is provided on the feed cylinder 502 near the servo motor 10.

[0054] It should be noted that a fan blade with an inclination angle of 18° is provided between the inner wall of the disc 503 and the outer wall of the feeding cylinder 502, and a through hole 505 is opened on the feeding cylinder 502 near the servo motor 10. This is so that when the servo motor drives the first stirrer 40 to rotate, a certain vortex will be generated when the first stirrer 40 rotates, which will cause the bubbles to be squeezed out through the through hole 505 under rotation. At this time, the bubbles squeezed out by the through hole will collide with the fan blade again and be divided into smaller bubbles by the fan blade.

[0055] Furthermore, the second stirrer 70 includes a stirring plate 701, on which a first stirring tooth 702 and a second stirring tooth 703 are integrally formed;

[0056] The first stirring teeth 702 and the second stirring teeth 703 are arranged in multiple sets and are evenly distributed along the circumference of the stirring disk 701.

[0057] The first stirring tooth 702 extends in a direction away from the servo motor, and the first stirring tooth 702 is set at an angle of 30°-90° with the stirring plate 701, preferably 35°;

[0058] The second stirring tooth 703 extends toward the direction close to the servo motor, and the second stirring tooth 703 is set at an angle of 30°-90° with the stirring plate 701, preferably 35°;

[0059] The tooth pitch between the first and second stirring teeth in two adjacent groups is 3 mm.

[0060] It should be noted that when the stirring teeth (first and second stirring teeth) are at a 35° angle to the stirring plate and the tooth pitch is 3mm, the second stirrer can generate strong turbulence and break up the stratification effect in the liquid through stirring. Especially at the bottom of the fermenter, the stirrer can strongly agitate the liquid flow from the bottom, reducing liquid stratification and dead zones, and promoting effective contact between liquid, gas, and microorganisms. This ensures that nutrients and gases are evenly distributed in the fermentation broth, meeting the needs of microbial growth and metabolism.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not restrictive. Although this utility model has been described in detail with reference to the embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solution of this utility model do not depart from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A stirring mechanism for a bio-fermentation tank, characterized in that, include: Servo motor, A rotating shaft driven by a servo motor; The first agitator is mounted on the rotating shaft; It also includes a flow guide, and the first agitator is located inside the feed cylinder of the flow guide; A second stirrer is installed at the bottom end of the rotating shaft away from the flow guide, and the second stirrer is located at the bottom of the fermentation tank; The flow guide includes a disc, and the disc is installed on the inner wall of the fermenter; The flow guide also includes a feed cylinder.

2. The stirring mechanism for a bio-fermentation tank according to claim 1, characterized in that, Connecting rods integrally formed with the ear plates located at both ends of the feed cylinder are provided. The other end of the connecting rod is installed on the inner wall of the sealing cover of the fermenter.

3. The stirring mechanism for a bio-fermentation tank according to claim 1, characterized in that, A fan blade is provided between the inner wall of the disc and the outer wall of the feed cylinder. The fan blades are arranged in multiple groups and are evenly distributed along the circumference of the disk; Furthermore, the fan blades are tilted at an angle of 18°.

4. The stirring mechanism for a bio-fermentation tank according to claim 1, characterized in that, A through hole is provided on the feed cylinder near the servo motor.

5. The stirring mechanism for a bio-fermentation tank according to claim 1, characterized in that, The second agitator includes a mixing plate. The mixing plate is provided with a first mixing tooth and a second mixing tooth integrated therewith. The first and second stirring teeth are arranged in multiple sets. The components are evenly distributed along the circumference of the mixing plate.

6. The stirring mechanism for a bio-fermentation tank according to claim 5, characterized in that, The first stirring tooth extends in a direction away from the servo motor. The first stirring tooth is set at an angle of 30°-90° to the stirring plate; The second stirring tooth extends toward the direction close to the servo motor. The second stirring tooth is set at an angle of 30°-90° to the stirring plate; The tooth pitch between the first and second stirring teeth in two adjacent groups is 3 mm.

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