Micro-bubble gas distribution device

Abstract

The utility model discloses a microbubble gas distribution device, which relates to the technical field of microbubble gas distribution and comprises a fermentation tank, a sealing component, a motor and a stirring rod, the sealing component and the motor are arranged at the top of the fermentation tank, the stirring rod is arranged in the fermentation tank, an upper group of stirring blades and a lower group of stirring blades are arranged on the stirring rod, and a feed port and a discharge port are further arranged on the fermentation tank. A supporting disc is arranged at the bottom in the fermentation tank, membrane wires are arranged on the supporting disc, a supporting table is arranged on the inner wall of the fermentation tank, a supporting plate is arranged on the side, away from the inner wall of the fermentation tank, of the supporting table, an annular disc is arranged on the supporting plate, membrane wires are arranged on the supporting table and the annular disc, and a ventilation opening and an exhaust opening are further formed in the fermentation tank; according to the microbubble gas distribution device provided by the utility model, the supporting disc is arranged, the membrane wires are coiled on the supporting disc, the supporting table and the annular disc are arranged, and the membrane wires are arranged on the supporting table and the annular disc, so that comprehensive gas distribution at the bottom, the side wall and the middle of the fermentation tank is realized, the oxygen concentration in the fermentation tank is improved, and the fermentation quality is ensured.

Description

Technical Field

[0001] This utility model relates to the field of microbubble air distribution technology, and in particular to a microbubble air distribution device. Background Technology

[0002] A fermenter is a container that provides a favorable environment for the operation of specific biochemical processes by microorganisms. In industrial fermentation, it generally refers to equipment used for the deep cultivation of microorganisms. Fermenters provide a suitable environment for the growth and metabolism of microorganisms by controlling parameters such as temperature, pH, and dissolved oxygen. Within the fermenter, microorganisms utilize fermentation feedstocks to carry out biochemical reactions, producing desired products such as enzymes, yeast, antibiotics, amino acids, vitamins, alcohol, and lactic acid.

[0003] In existing fermenters, during aerobic fermentation, microorganisms grow rapidly, the viscosity of the fermentation broth increases, and the oxygen distribution within the container is uneven, which is not conducive to the survival of aerobic bacteria and thus affects the yield of aerobic fermentation products.

[0004] Therefore, a microbubble aeration device is proposed to increase the oxygen concentration in the fermenter and to make the oxygen evenly distributed in the fermentation liquid, thereby improving the yield of aerobic fermentation products. Utility Model Content

[0005] In view of the problems in the existing fermenters, such as rapid microbial growth, increased viscosity of fermentation broth, and uneven oxygen distribution in the container during aerobic fermentation, which are not conducive to the survival of aerobic bacteria and thus affect the yield of aerobic fermentation products, this utility model is proposed.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a microbubble gas distribution device, which includes a fermentation tank, a sealing component and a motor disposed on the top of the fermentation tank, and a stirring rod disposed inside the fermentation tank. The stirring rod is provided with two sets of stirring blades, and the fermentation tank is also provided with a feed inlet and a discharge outlet. A support plate is disposed at the bottom of the fermentation tank, and membrane filaments are disposed on the support plate. A support platform is disposed on the inner wall of the fermentation tank, and a support plate is disposed on the side of the support platform away from the inner wall of the fermentation tank. An annular disk is disposed on the support plate. Membrane filaments are disposed on both the support platform and the annular disk. The fermentation tank is also provided with a vent and an exhaust outlet.

[0007] Preferably, the outer wall of the support plate is closely attached to the inner wall of the fermenter, a hollow tube is provided at the bottom of the support plate, a foot support is provided on the hollow tube, the foot support is detachably connected to the fermenter, and the membrane fiber spiral coil on the support plate is placed on the support plate and connected to the vent through the hollow tube.

[0008] Preferably, the diameter of the support disk is larger than the rotation diameter of the lower stirring blade, the support disk includes multiple fan plates, the membrane filament spiral disk on the support disk is placed on the support disk and connected to the vent.

[0009] Preferably, the support platform is disposed between the two sets of stirring blades, the support platform is provided with membrane filaments, the support platform has threaded holes, bolts pass through the threaded holes, and press the membrane filaments tightly on the support platform.

[0010] Preferably, multiple sets of the support platform and the support plate are provided, and the multiple sets of the support platform and the support plate are arranged in a circumferential array on the fermenter perpendicular to the axis of the stirring rod, with at least two sets arranged in the vertical direction.

[0011] Preferably, the annular disk is detachably connected to the support plate, the annular disk is sleeved outside the stirring rod, a gap is left between the annular disk and the stirring rod, and the annular disk is provided with a plurality of threading holes, the membrane filaments on the annular disk sequentially pass through adjacent threading holes of the same annular disk and corresponding threading holes of a plurality of vertically distributed annular disks.

[0012] Preferably, the annular disc is detachably mounted on the stirring rod.

[0013] Preferably, the annular disk comprises two semicircular disks that are detachably connected together.

[0014] Preferably, the support platform is vertically adjustable and mounted on the fermentation tank.

[0015] The beneficial effects of this utility model are:

[0016] By setting up a support plate and placing membrane fibers on it, and setting up a support platform and an annular plate and placing membrane fibers on it, comprehensive gas distribution can be achieved at the bottom, side walls and middle of the fermenter, increasing the oxygen concentration in the fermenter and ensuring that oxygen is evenly distributed in the fermentation liquid, thereby improving the yield of aerobic fermentation products. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0018] Figure 1 This is a front view schematic diagram of the internal structure of the microbubble air distribution device of this utility model.

[0019] Figure 2This is a schematic diagram of the first structure of the support plate of this utility model.

[0020] Figure 3 This is a schematic diagram of the second structure of the support plate of this utility model.

[0021] Figure 4 This is a schematic diagram of the annular disk structure of this utility model.

[0022] Figure 5 This is a schematic diagram of the membrane filament arrangement on the annular disk of this utility model.

[0023] Figure 6 This is a top view of the internal structure of the microbubble air distribution device of this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Fermentation tank; 2. Motor; 3. Sealing assembly; 4. Stirring rod; 5. Stirring blade; 6. Membrane fiber; 7. Vent; 8. Support plate; 9. Support platform; 10. Support plate; 11. Annular disc; 12. Hollow tube; 13. Foot support; 14. Exhaust port; 15. Feed inlet; 16. Discharge port. Detailed Implementation

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0027] Reference Figures 1 to 6 This invention provides a microbubble gas distribution device, comprising a fermenter 1, a sealing assembly 3 and a motor 2 disposed on the top of the fermenter 1, and a stirring rod 4 disposed inside the fermenter 1. The stirring rod 4 is provided with two sets of stirring blades 5. The fermenter 1 is also provided with an inlet 15 and an outlet 16. A support plate 8 is disposed at the bottom of the fermenter 1, and membrane filaments 6 are disposed on the support plate 8. A support platform 9 is disposed on the inner wall of the fermenter 1. A support plate 10 is disposed on the side of the support platform 9 away from the inner wall of the fermenter 1. An annular disk 11 is disposed on the support plate 10. Membrane filaments 6 are disposed on both the support platform 9 and the annular disk 11. The fermenter 1 is also provided with a vent 7 and an exhaust port 14. The exhaust port 14 is disposed at the top of the fermenter 1. The membrane filaments 6 have micropores of 0.1μm-2μm, and gas is slowly discharged from the micropores to achieve micro-gas distribution.

[0028] Reference Figure 1 and Figure 2In this embodiment, the support plate 8 is located at the bottom of the fermenter 1 and is lower than the bottom end of the stirring rod 4. The inner diameter of the support plate 8 is larger than the rotation diameter of the lower stirring blade to ensure that the lower stirring blade can pass through the support plate 8 in some cases. The support plate 8 includes multiple fan plates, and there is a gap between each fan plate. This design can save costs and improve the economy of the device. The membrane filament 6 is spirally coiled on the support plate 8 and connected to the vent 7. The vent 7 is located at the bottom or side wall of the fermenter 1. The bottom of the support plate 8 is provided with a foot support 13, which is detachably connected to the bottom of the fermenter 1.

[0029] Reference Figure 1 and Figure 3 In some embodiments, the support plate 8 is a complete disc. The outer wall of the support plate 8 is set close to the inner wall of the fermenter 1. At this time, the support plate 8 can play a supporting role. A hollow tube 12 is set at the bottom of the support plate 8. A foot support 13 is set on the hollow tube 12. The foot support 13 is detachably connected to the fermenter 1. The membrane filament 6 spiral is placed on the support plate 8 and connected to the vent 7 through the hollow tube 12.

[0030] Reference Figure 1 and Figure 6 In this embodiment, multiple sets of support platforms 9 and support plates 10 are provided. These multiple sets of support platforms 9 and support plates 10 are arranged in a circular array on the inner wall of the fermenter 1, perpendicular to the axis of the stirring rod 4. Preferably, there are 6-8 sets of support platforms 9 and support plates 10, with multiple sets in the vertical direction. Preferably, there are two sets of support platforms 9 and support plates 10 in the vertical direction. The support platform 9 is located between two sets of stirring blades 5. A membrane filament 6 is provided on the support platform 9. Threaded holes are provided on the support platform 9. Bolts pass through the threaded holes and press the membrane filament 6 onto the support platform 9. Furthermore, a gasket can be used for connection and tightening assistance. The other end of the membrane filament 6 on the support platform 9 is suspended along the side wall of the fermenter 1 and extends to the vent 7.

[0031] Reference Figure 1 , Figure 4 and Figure 5In this embodiment, the annular disk 11 is detachably connected to the support plate 10. For example, threaded holes are provided on the support plate 10 and the annular disk 11, and they are connected together by bolts. Simultaneously, the annular disk 11 is detachably sleeved on the stirring rod 4, and a gap is left between the annular disk 11 and the stirring rod 4 to prevent the membrane filaments 6 on the annular disk 11 from winding around the stirring rod 4 when it rotates. The annular disk 11 can adopt a clamp-type design, or it can be designed as two semicircular disks connected together, with each semicircular disk detachably connected to the support plate 10. For example, in bonding, bolting, riveting, etc., the annular disk 11 is provided with multiple threading holes. The membrane filament 6 passes through the adjacent threading holes of the same annular disk 11 and the corresponding threading holes of multiple vertically distributed annular disks 11 in sequence. For example, it passes vertically from the first threading hole of the upper annular disk 11 to the first threading hole of the lower annular disk 11 and out, then passes through the second threading hole of the lower annular disk 11 and out, then passes through the second threading hole of the upper annular disk 11 and out, then passes through the third annular disk 11 of the upper annular disk 11 to the lower annular disk 11, and so on, passing through all the threading holes on the annular disk 11.

[0032] Reference Figure 4 and Figure 5 In some embodiments, the membrane filament 6 on the annular disk 11 is a single independent filament, or the membrane filament 6 on the annular disk 11 and a membrane filament 6 on the support platform 9 are the same filament.

[0033] Reference Figure 1 In some embodiments, the support platform 9 is vertically adjustable on the fermenter 1. This structure can adjust the height of the annular disk 11 inside the fermenter 1, thereby adjusting the oxygen distribution in the middle of the fermenter 1.

[0034] Working principle: Oxygen is delivered to the membrane filaments 6 through the vent 7 and then diffused into the fermenter 1, thus completing the oxygen delivery. The spiral disc of the membrane filaments 6 on the support plate 8 is placed on it, so that the oxygen is evenly distributed to the bottom of the fermenter 1. The membrane filaments 6 set on the support platform 9 diffuse the oxygen to the side wall of the fermenter 1, and then cover the side wall of the fermenter 1. The membrane filaments 6 on the annular disc 11 cover the middle of the fermenter 1 with oxygen. The multi-layer arrangement makes the oxygen distribution in the fermenter 1 uniform.

[0035] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing 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 microbubble aeration device, comprising a fermenter (1), a sealing assembly (3) and a motor (2) disposed on the top of the fermenter (1), and a stirring rod (4) disposed inside the fermenter (1), wherein the stirring rod (4) is provided with two sets of stirring blades (5), and the fermenter (1) is further provided with a feed inlet (15) and a discharge outlet (16), characterized in that: The fermenter (1) is provided with a support plate (8) at the bottom, and a membrane filament (6) is provided on the support plate (8). The fermenter (1) is provided with a support platform (9) on the inner wall. The support platform (9) is provided with a support plate (10) on the side away from the inner wall of the fermenter (1). The support plate (10) is provided with an annular disk (11). Both the support platform (9) and the annular disk (11) are provided with membrane filaments (6). The fermenter (1) is also provided with a vent (7) and an exhaust port (14).

2. The microbubble gas distribution device according to claim 1, characterized in that: The outer wall of the support plate (8) is closely attached to the inner wall of the fermentation tank (1). A hollow tube (12) is provided at the bottom of the support plate (8). A foot support (13) is provided on the hollow tube (12). The foot support (13) is detachably connected to the fermentation tank (1). The membrane filament (6) spiral is placed on the support plate (8) and connected to the vent (7) through the hollow tube (12).

3. The microbubble gas distribution device according to claim 1, characterized in that: The diameter of the support disk (8) is larger than the rotation diameter of the lower stirring blade. The support disk (8) includes multiple fan plates. The membrane filaments (6) on the support disk (8) are spirally coiled on the support disk (8) and connected to the vent (7).

4. The microbubble gas distribution device according to claim 1, characterized in that: The support platform (9) is disposed between the two sets of stirring blades (5). A membrane filament (6) is disposed on the support platform (9). A threaded hole is provided on the support platform (9). A bolt passes through the threaded hole and presses the membrane filament (6) onto the support platform (9).

5. A microbubble gas distribution device according to claim 4, characterized in that: Multiple sets of the support platform (9) and the support plate (10) are provided. The multiple sets of the support platform (9) and the support plate (10) are arranged in a circular array on the fermenter (1) perpendicular to the axis of the stirring rod (4), and at least two sets are arranged in the vertical direction.

6. A microbubble gas distribution device according to claim 5, characterized in that: The annular disk (11) is detachably connected to the support plate (10). The annular disk (11) is sleeved on the outside of the stirring rod (4). There is a gap between the annular disk (11) and the stirring rod (4). The annular disk (11) is provided with multiple threading holes. The membrane filaments (6) on the annular disk (11) pass through the adjacent threading holes of the same annular disk (11) and the corresponding threading holes of multiple vertically distributed annular disks (11) in sequence.

7. A microbubble air distribution device according to claim 6, characterized in that: The annular disk (11) is detachably mounted outside the stirring rod (4).

8. A microbubble gas distribution device according to claim 7, characterized in that: The annular disk (11) includes two semicircular disks that are detachably connected together.

9. A microbubble gas distribution device according to claim 8, characterized in that: The support platform (9) is mounted on the fermentation tank (1) in a height-adjustable manner.

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