Mixed microbial inoculum fermentation tank

Abstract

The utility model discloses a mixed bacterial agent fermentation tank, which belongs to the technical field of compound bacterial system compounding co-culture and comprises a fermentation tank, a stirring motor mounted in the middle of the top end of the fermentation tank and a stirring shaft vertically mounted at the output end of the stirring motor and positioned in the fermentation tank, and driving bins are uniformly arranged on the stirring shaft along the length direction; rotating shafts are uniformly and rotatably mounted on the outer side of the driving bin in the circumferential direction, paddles are fixed to the outer ends of the rotating shafts, driven gears are mounted at the inner ends of the rotating shafts, and driving gears are rotatably mounted at the inner bottom of the driving bin. According to the stirring device, the driving bin is arranged on the stirring shaft, the paddles are uniformly mounted on the outer side of the driving bin in the circumferential direction, and the rotating mechanism is matched with the rotating shaft, the paddles, the driven gear, the driving gear, the through groove and the connecting rod to carry out driving control, so that the inclination angles of the paddles can be changed in the stirring use process of the device; the axial flow and radial flow ratio of the fluid is dynamically adjusted, a stirring dead zone is eliminated, and the local mixing uniformity is improved.

Description

Technical Field

[0001] This utility model relates to a fermenter, and more particularly to a fermenter with mixed microbial agents, belonging to the field of compound microbial co-culture technology. Background Technology

[0002] Stirring inside the fermenter is one of the core operations in the fermentation process. It can not only promote uniform mixing of materials and avoid local concentration and temperature differences, but also enhance the mass transfer process and ensure the transfer of key substances. However, the current angle of the blades inside the fermenter is fixed and the flow field pattern is single, making it difficult to meet the mixing needs of different fermentation stages. Moreover, it is only suitable for materials with specific viscosity or flowability. When the material properties change (such as the viscosity increasing due to cell growth during fermentation), the stirring efficiency drops significantly.

[0003] To address these issues, a mixed microbial agent fermenter was designed. Utility Model Content

[0004] The main objective of this invention is to provide a mixed microbial agent fermentation tank to solve the problems mentioned in the background art.

[0005] The objective of this utility model can be achieved by adopting the following technical solution:

[0006] A mixed microbial agent fermenter includes a fermenter, a stirring motor installed at the middle position of the top of the fermenter, and a stirring shaft vertically installed at the output end of the stirring motor and located inside the fermenter.

[0007] The stirring shaft is uniformly provided with drive chambers along its length. Rotary shafts are uniformly mounted on the outer side of the drive chambers in a circumferential direction. Blades are fixed to the outer end of each rotating shaft. Driven gears are mounted on the inner end of each rotating shaft. Driven gears are rotatably mounted on the inner bottom of each drive chamber. The top of the drive gear meshes with the driven gear. A connecting rod is fixed between the drive gears. A through groove that mates with the connecting rod is provided at the bottom end of the stirring shaft. A rotating mechanism that controls the horizontal rotation of the connecting rod is provided at the bottom end of the stirring shaft.

[0008] Preferably, the rotating mechanism includes a fixed block, a cylinder, a splined shaft, a rotating connector, a sleeve, a slide rod, an arc-shaped guide groove, a slider, and a spline groove. The fixed block is vertically fixed at the middle position of the bottom inside the fermenter. The bottom end of the stirring shaft is rotatably connected to the fixed block. The cylinder is vertically installed inside the fixed block. A spline groove is opened at the bottom end of the stirring shaft. A splined shaft is vertically slidably installed inside the spline groove. A rotating connector is provided between the output end of the cylinder and the splined shaft. A sleeve is fixed at the top end of the splined shaft. A slide rod is vertically slidably installed inside the sleeve. The top end of the slide rod is fixedly connected to a connecting rod. Slider blocks are symmetrically installed on both sides of the slide rod. Arc-shaped guide grooves are opened on both sides of the sleeve. The slider slides inside the arc-shaped guide grooves.

[0009] Preferably, the rotary connector includes a connecting post and a bushing. The connecting post is fixedly installed at the output end of the cylinder, the bushing is fixed at the bottom end of the spline shaft, the connecting post extends into the interior of the bushing, and the connecting post and the bushing are connected by a bearing.

[0010] Preferably, the slider is cylindrical in shape, and the slider and the sliding rod are rotatably connected.

[0011] Preferably, an outlet is provided at the middle position of the bottom of the fermentation tank, and support legs are evenly provided on the outer side of the bottom of the fermentation tank.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model has a drive chamber on the stirring shaft, and the blades are evenly installed on the outside of the drive chamber in the circumferential direction. The rotating mechanism is used in conjunction with the rotating shaft, blades, driven gear, driving gear, through groove and connecting rod for drive control. This allows the device to change the tilt angle of the blades during stirring, dynamically adjust the ratio of axial and radial flow of the fluid, eliminate stirring dead zones, and improve local mixing uniformity.

[0014] 2. This utility model uses a rotating mechanism composed of a fixed block, a cylinder, a splined shaft, a connecting column, a bushing, a sleeve, a slide rod, an arc-shaped guide groove, and a slider. This mechanism can control the rotation of the connecting rod without affecting the stirring shaft. The structure is simple and the operation is more convenient. Attached Figure Description

[0015] Figure 1 This is a front sectional view of the present invention;

[0016] Figure 2 For the present utility model Figure 1 Enlarged view of point A in the middle;

[0017] Figure 3 This is a diagram of the rotating mechanism of this utility model;

[0018] Figure 4 This is a diagram of the rotary connector of this utility model.

[0019] In the diagram: 1. Fermentation tank; 101. Stirring motor; 102. Stirring shaft;

[0020] 2. Drive housing; 3. Shaft; 4. Blade; 5. Driven gear; 6. Drive gear; 7. Through slot; 8. Connecting rod;

[0021] 9. Rotating mechanism; 901. Fixed block; 902. Cylinder; 903. Splined shaft;

[0022] 904, Rotary connector; 9041, Connecting post; 9042, Bushing;

[0023] 905. Sleeve; 906. Sliding rod; 907. Arc-shaped guide groove; 908. Sliding block; 909. Spline groove. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0025] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0026] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0029] Example 1

[0030] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this embodiment proposes a mixed microbial agent fermentation tank, including a fermentation tank 1, a stirring motor 101 installed at the middle position of the top of the fermentation tank 1, and a stirring shaft 102 vertically installed at the output end of the stirring motor 101 and located inside the fermentation tank 1.

[0031] A drive chamber 2 is evenly provided along the length of the stirring shaft 102. A rotating shaft 3 is evenly rotatably installed on the outer side of the drive chamber 2 along the circumferential direction. A blade 4 is fixed at the outer end of the rotating shaft 3. A driven gear 5 is installed at the inner end of the rotating shaft 3. A driving gear 6 is rotatably installed at the inner bottom of the drive chamber 2. The top of the driving gear 6 meshes with the driven gear 5. A connecting rod 8 is fixed between the driving gears 6. A through groove 7 that cooperates with the connecting rod 8 is provided at the bottom end of the stirring shaft 102. A rotating mechanism 9 that controls the horizontal rotation of the connecting rod 8 is provided at the bottom end of the stirring shaft 102.

[0032] During fermentation, in order to promote uniform mixing of materials, the stirring motor 101 is started to drive the stirring shaft 102 and the blade 4 to rotate, thereby accelerating the flow of materials. During fermentation, the growth of cells and the generation of metabolites require different stirring. In the initial cell proliferation stage, a low angle is used to protect cell activity. In the middle stage of product synthesis, a medium angle is used to balance mixing and dissolved oxygen transfer. In the later stage of product release, a large angle is used to promote contact between substrate and enzyme. When adjusting the rotation of the blade 4, the rotating mechanism 9 controls the connecting rod 8 and the driving gear 6 to rotate simultaneously. The rotation of the driving gear 6 will simultaneously drive the driven gear 5 to rotate, thereby controlling the rotation of the blade 4 and adjusting the angle of the blade 4.

[0033] Example 2

[0034] The solution in Example 1 will be further described below with reference to its specific working method.

[0035] like Figure 3 As shown, in a preferred embodiment, based on the above method, the rotating mechanism 9 further includes a fixed block 901, a cylinder 902, a splined shaft 903, a rotating connector 904, a sleeve 905, a slide rod 906, an arc-shaped guide groove 907, a slider 908, and a spline groove 909. The fixed block 901 is vertically fixed at the middle position of the bottom inside the fermenter 1. The bottom end of the stirring shaft 102 is rotatably connected to the fixed block 901. The cylinder 902 is vertically installed inside the fixed block 901. The bottom end of the stirring shaft 102 is open. A spline groove 909 is provided, and a spline shaft 903 is vertically slidably arranged inside the spline groove 909. A rotary connector 904 is provided between the output end of the cylinder 902 and the spline shaft 903. A sleeve 905 is fixed to the top of the spline shaft 903. A slide rod 906 is vertically slidably arranged inside the sleeve 905. The top of the slide rod 906 is fixedly connected to the connecting rod 8. Slider blocks 908 are symmetrically installed on both sides of the slide rod 906. Arc-shaped guide grooves 907 are opened on both sides of the sleeve 905, and the sliders 908 slide inside the arc-shaped guide grooves 907.

[0036] In the initial state, the blade 4 is perpendicular to the horizontal plane and at its maximum rotation angle. The cylinder 902 is in the initial state, and the sliders 908 are all located at the top of the arc-shaped guide groove 907. When the angle between the blade 4 and the horizontal plane is reduced, the cylinder 902 is activated to control the spline shaft 903 to move upward. The spline shaft 903 drives the sleeve 905 to move upward. The height of the slide rod 906 remains unchanged. The slider 908 on the outside of the slide rod 906 slides downward inside the arc-shaped guide groove 907. The bottom of the arc-shaped guide groove 907 applies a rotational thrust to the slider 908, controlling the connecting rod 8 to drive the drive gear 6 to rotate counterclockwise, thereby adjusting the angle of the blade 4.

[0037] like Figure 3 and Figure 4 As shown, in a preferred embodiment, based on the above method, the rotary connector 904 further includes a connecting post 9041 and a bushing 9042. The connecting post 9041 is fixedly installed at the output end of the cylinder 902, and the bushing 9042 is fixed at the bottom end of the spline shaft 903. The connecting post 9041 extends into the interior of the bushing 9042, and the connecting post 9041 and the bushing 9042 are connected by a bearing. During the process of the stirring motor 101 driving the stirring shaft 102 to rotate, the rotation of the spline shaft 903 is controlled at the same time. The bushing 9042 at the bottom end of the spline shaft 903 is rotatably connected to the connecting post 9041, which limits the bottom end of the stirring shaft 102, thus ensuring the stable rotation of the stirring shaft 102.

[0038] like Figure 3 As shown, in a preferred embodiment, based on the above method, the slider 908 is further cylindrical in shape, and the slider 908 is rotatably connected to the slide rod 906, which reduces the frictional resistance of the slider 908 inside the arc-shaped guide groove 907.

[0039] like Figure 1 As shown, in a preferred embodiment, based on the above method, a discharge port is further provided at the middle position of the bottom of the fermentation tank 1, and support legs are evenly provided on the outer side of the bottom of the fermentation tank 1. After the mixed bacterial agent fermentation is completed, it is discharged from the bottom discharge port, and the support legs are used to stably support the fermentation tank 1.

[0040] Example 3

[0041] The solutions in Embodiments 1 and 2 will be further described below with reference to their specific working methods.

[0042] During fermentation, to promote uniform mixing of materials, the stirring motor 101 is activated, driving the stirring shaft 102 and the impeller 4 to rotate, accelerating the flow of materials. During fermentation, the needs for stirring differ depending on the stage of cell growth and the generation of metabolites. In the initial cell proliferation stage, a low-angle tilt is used to protect cell activity; in the mid-stage product synthesis stage, a medium angle is used to balance mixing and dissolved oxygen transfer; and in the late-stage product release stage, a large angle is used to promote contact between the substrate and the enzyme. When adjusting the rotation of the impeller 4, initially, the impeller 4 is perpendicular to the horizontal plane at its maximum rotation angle, the cylinder 902 is in its initial state, and the slider 908 is located at the top of the arc-shaped guide groove 907. When the angle between the impeller 4 and the horizontal plane is reduced, the cylinder 902 is activated to control the spline shaft 903 to move upwards. When the spline shaft 903 moves, the sleeve 905 moves upward, the height of the slide rod 906 remains unchanged, and the slider 908 on the outside of the slide rod 906 slides downward inside the arc-shaped guide groove 907. The bottom of the arc-shaped guide groove 907 applies a rotational thrust to the slider 908, controlling the connecting rod 8 to drive the drive gear 6 to rotate counterclockwise. The rotation of the drive gear 6 will simultaneously drive the driven gear 5 to rotate, thereby controlling the rotation of the blade 4 and adjusting the angle of the blade 4. During the stirring process, while the stirring motor 101 drives the stirring shaft 102 to rotate, it simultaneously controls the rotation of the spline shaft 903. The bushing 9042 at the bottom of the spline shaft 903 is rotatably connected to the connecting column 9041, limiting the bottom of the stirring shaft 102, thus ensuring the stable rotation of the stirring shaft 102.

[0043] The above description is only a further embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope disclosed by the present utility model, based on the technical solution and concept of the present utility model, shall fall within the protection scope of the present utility model.

Claims

1. A mixed microbial agent fermenter, comprising a fermenter (1), a stirring motor (101) installed at the middle position of the top of the fermenter (1), and a stirring shaft (102) vertically installed at the output end of the stirring motor (101) and located inside the fermenter (1); Its features are: A drive chamber (2) is evenly provided along the length direction on the stirring shaft (102). A rotating shaft (3) is evenly installed on the outer side of the drive chamber (2) in the circumferential direction. A blade (4) is fixed on the outer end of the rotating shaft (3). A driven gear (5) is installed on the inner end of the rotating shaft (3). A drive gear (6) is rotatably installed on the inner bottom of the drive chamber (2). The top of the drive gear (6) meshes with the driven gear (5). A connecting rod (8) is fixed between the drive gears (6). A through groove (7) that cooperates with the connecting rod (8) is provided at the bottom end of the stirring shaft (102). A rotating mechanism (9) that controls the horizontal rotation of the connecting rod (8) is provided at the bottom end of the stirring shaft (102).

2. The mixed microbial agent fermentation tank according to claim 1, characterized in that: The rotating mechanism (9) includes a fixed block (901), a cylinder (902), a splined shaft (903), a rotating connector (904), a sleeve (905), a slide rod (906), an arc-shaped guide groove (907), a slider (908), and a spline groove (909). The fixed block (901) is vertically fixed at the middle position of the bottom of the fermenter (1). The bottom end of the stirring shaft (102) is rotatably connected to the fixed block (901). The cylinder (902) is vertically installed inside the fixed block (901). The bottom end of the stirring shaft (102) is provided with a spline groove (909). A spline shaft (903) is vertically slidably installed inside the cylinder (902). A rotary connector (904) is provided between the output end of the cylinder (902) and the spline shaft (903). A sleeve (905) is fixed at the top of the spline shaft (903). A slide rod (906) is vertically slidably installed inside the sleeve (905). The top of the slide rod (906) is fixedly connected to the connecting rod (8). Slider blocks (908) are symmetrically installed on both sides of the slide rod (906). Arc-shaped guide grooves (907) are opened on both sides of the sleeve (905). The sliders (908) slide inside the arc-shaped guide grooves (907).

3. The mixed microbial agent fermentation tank according to claim 2, characterized in that: The rotary connector (904) includes a connecting post (9041) and a bushing (9042). The connecting post (9041) is fixedly installed at the output end of the cylinder (902), and the bushing (9042) is fixed at the bottom end of the splined shaft (903). The connecting post (9041) extends into the interior of the bushing (9042), and the connecting post (9041) and the bushing (9042) are connected by a bearing.

4. A mixed microbial agent fermentation tank according to claim 2, characterized in that: The slider (908) is cylindrical in shape, and the slider (908) is rotatably connected to the slide rod (906).

5. A mixed microbial agent fermenter according to claim 1, characterized in that: The fermentation tank (1) has an outlet at the middle of its bottom and support legs evenly distributed on the outer side of its bottom.

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