CN220685073U - Stirrer for high-viscosity fluid fermentation - Google Patents
Stirrer for high-viscosity fluid fermentation Download PDFInfo
- Publication number
- CN220685073U CN220685073U CN202322118921.5U CN202322118921U CN220685073U CN 220685073 U CN220685073 U CN 220685073U CN 202322118921 U CN202322118921 U CN 202322118921U CN 220685073 U CN220685073 U CN 220685073U
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- straight plate
- stirrer
- long sides
- plate
- stirring
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- 239000012530 fluid Substances 0.000 title claims abstract description 14
- 238000000855 fermentation Methods 0.000 title claims description 9
- 230000004151 fermentation Effects 0.000 title claims description 9
- 238000003756 stirring Methods 0.000 claims abstract description 55
- 238000009826 distribution Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 238000004140 cleaning Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 9
- 239000007788 liquid Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 208000030159 metabolic disease Diseases 0.000 description 1
- 230000002503 metabolic effect Effects 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000013341 scale-up Methods 0.000 description 1
Landscapes
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
The utility model relates to a stirrer for fermenting high-viscosity fluid, which comprises a tank body, a stirring shaft, a gas distributor, a bottom stirrer and an upper stirrer; the upper stirrer comprises a hub shaft sleeve and upper stirring blades, a mounting hole for connecting a stirring shaft is formed in the center of the hub shaft sleeve, and at least two upper stirring blades are fixed on the outer circle of the hub shaft sleeve; the upper stirring blade comprises a first straight plate, a second straight plate and an arc plate, wherein the widths of the first straight plate, the second straight plate and the arc plate are gradually increased from the outer end to the inner end. The utility model can obtain axial flow with larger diameter range and low power consumption, can obtain better mixing and mass and heat transfer effects, has smaller running resistance and is convenient for cleaning.
Description
Technical Field
The utility model relates to a stirrer, and particularly discloses a stirrer for fermenting high-viscosity fluid.
Background
In the operation of high viscosity fluids, mixers with large diameter, low power consumption mixing paddles are preferred for enhanced mass and heat transfer.
With the rapid development of the microbial fermentation industry, in the high-viscosity ventilated fermentation process, the high-viscosity system makes gas-liquid two-phase mass transfer and heat transfer become bottlenecks for limiting the scale-up of the bioreactor. Because the high-viscosity fermentation liquor has the characteristic of quasi-plastic fluid, good mass transfer and heat transfer effects can be obtained near the stirring paddles rotating at high speed, but the fluid in the area far away from the stirring paddles is almost in a stagnant state, microorganisms at the place often cause metabolism disorder, accumulation of metabolic byproducts and even death due to lack of oxygen and incapacity of heat dissipation, and the fermentation yield and the production efficiency are seriously affected.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provide a stirrer suitable for the processes of mixing, heat transfer, reaction and the like of a high-viscosity liquid fermentation tank.
According to the technical scheme provided by the utility model, the stirrer for high-viscosity fluid fermentation comprises a tank body, a stirring shaft, a gas distributor, a bottom stirrer and an upper stirrer; a stirring shaft is arranged in the tank body, a bottom stirrer is arranged at the bottom end part of the stirring shaft, a gas distributor is arranged in the tank body below the bottom stirrer, gas distribution holes are formed in the gas distributor, a driving assembly is arranged outside the tank body, the stirring shaft is driven by the driving assembly, and a plurality of upper stirrers are arranged on the stirring shaft above the bottom stirrer at intervals;
the upper stirrer comprises a hub shaft sleeve and upper stirring blades, wherein a mounting hole for connecting a stirring shaft is formed in the center of the hub shaft sleeve, and at least two upper stirring blades are fixed on the outer circle of the hub shaft sleeve; the upper stirring paddle comprises a first straight plate, a second straight plate and an arc plate, wherein the long sides of the first straight plate are respectively connected with the long sides of the second straight plate and the long sides of the arc plate, the long sides of the second straight plate are respectively connected with the long sides of the first straight plate and the long sides of the arc plate, the long sides of the arc plate are respectively connected with the long sides of the first straight plate and the long sides of the second straight plate, and the width of the first straight plate, the width of the second straight plate and the width of the arc plate are gradually increased from the outer end to the inner end.
Preferably, the upper stirring blade has a hollow structure.
Preferably, the included angle between the first straight plate and the second straight plate is 90-145 degrees.
Preferably, the ratio of the rotation diameter of the upper stirring blade to the inner diameter of the tank is (0.4-0.95): 1.
Preferably, the ratio of the distance between two adjacent upper agitators to the inner diameter of the tank is (0.4-1.2): 1.
The utility model can obtain axial flow with larger diameter range and low power consumption, can obtain better mixing and mass and heat transfer effects, has smaller running resistance and is convenient for cleaning.
Drawings
Fig. 1 is a front view of the present utility model.
Fig. 2 is a front view of the upper agitator of the present utility model.
Fig. 3 is a top view of the upper stirrer of the present utility model.
Fig. 4 is a left side view of the upper agitator of the present utility model.
Fig. 5 is a perspective view of the upper stirrer in the present utility model.
In the figure, 1 is a tank body, 2 is a stirring shaft, 3 is a gas distributor, 4 is a bottom stirrer, 5 is an upper stirrer, 5.1 is a hub shaft sleeve, 5.2 is an upper stirring blade, 5.21 is a first straight plate, 5.22 is a second straight plate, 5.23 is an arc plate, 6 is a mounting flange, 7 is a frame, 8 is a permanent magnet motor, and 9 is a coupling.
Detailed Description
The utility model will be further illustrated with reference to specific examples.
A stirrer for fermenting high-viscosity fluid is shown in figure 1, and comprises a tank body 1, a stirring shaft 2, a gas distributor 3, a bottom stirrer 4 and an upper stirrer 5; a stirring shaft 2 is arranged in a tank body 1, a bottom stirrer 4 is arranged at the bottom end part of the stirring shaft 2, a gas distributor 3 is arranged in the tank body 1 below the bottom stirrer 4, gas distribution holes are formed in the gas distributor 3, a mounting flange 6 is arranged at the top of the outer surface of the tank body 1, a frame 7 is fixed on the upper surface of the mounting flange 6, a permanent magnet motor 8 is arranged on the frame 7, an output shaft of the permanent magnet motor 8 is connected with the stirring shaft 2 through a coupler 9, a driving assembly consisting of the permanent magnet motor 8 and the coupler 9 is arranged outside the tank body 1, a mechanical sealing mechanism capable of sealing the frame 7 and the stirring shaft 2 is arranged on the frame 7, the stirring shaft 2 is driven by the driving assembly, and a plurality of upper stirrers 5 are arranged on the stirring shaft 2 above the bottom stirrer 4 at intervals;
the bottom layer stirrer 4 consists of a circular mounting plate and bottom layer paddles fixed on the circular mounting plate, the cross section of each bottom layer paddle is parabolic, the symmetrical center line of the parabolic is positioned in the plane of the circular mounting plate, and the width of each bottom layer paddle positioned above the circular mounting plate is larger than that of each bottom layer paddle positioned below the circular mounting plate;
as shown in fig. 2-5, the upper stirrer 5 comprises a hub shaft sleeve 5.1 and upper stirring blades 5.2, wherein a mounting hole for connecting the stirring shaft 2 is arranged in the center of the hub shaft sleeve 5.1, and two uniformly distributed upper stirring blades 5.2 are fixed on the outer circle of the hub shaft sleeve 5.1; the upper stirring paddle 5.2 comprises a first straight plate 5.21, a second straight plate 5.22 and an arc plate 5.23, wherein long sides of the first straight plate 5.21 are respectively connected with long sides of the second straight plate 5.22 and long sides of the arc plate 5.23, long sides of the second straight plate 5.22 are respectively connected with long sides of the first straight plate 5.21 and long sides of the arc plate 5.23, long sides of the arc plate 5.23 are respectively connected with long sides of the first straight plate 5.21 and long sides of the second straight plate 5.22, and the widths of the first straight plate 5.21, the second straight plate 5.22 and the arc plate 5.23 are gradually increased from the outer end to the inner end.
The upper stirring blade 5.2 is of a hollow structure.
The included angle between the first straight plate 5.21 and the second straight plate 5.22 is 90-145 degrees.
The ratio of the rotation diameter of the upper stirring blade 5.2 to the inner diameter of the tank 1 is (0.4-0.95): 1.
Two adjacent upper stirrers 5 are mounted on the stirring shaft 2 at 90 degrees to each other, and the ratio of the distance between the two adjacent upper stirrers 5 to the diameter of the inner circle of the tank 1 is (0.4-1.2): 1.
In the present utility model, the upper stirring blade 5.2 includes a first straight plate 5.21, a second straight plate 5.22 and an arc plate 5.23, both long sides of the first straight plate 5.21 are respectively connected with the long sides of the second straight plate 5.22 and the long sides of the arc plate 5.23, both long sides of the second straight plate 5.22 are respectively connected with the long sides of the first straight plate 5.21 and the long sides of the arc plate 5.23, both long sides of the arc plate 5.23 are respectively connected with the long sides of the first straight plate 5.21 and the long sides of the second straight plate 5.22, and the widths of the first straight plate 5.21, the second straight plate 5.22 and the arc plate 5.23 are gradually increased in the direction from the outer end to the inner end. It can be seen that: the upper stirring blade 5.2 has a variable cross-section structure, the outer end (i.e., tip) of the upper stirring blade 5.2 has a small cross-section, and the inner end (i.e., root) of the upper stirring blade 5.2 has a large cross-section. So that the upper stirring blade 5.2 can obtain a large diameter range of axial flow and low power consumption.
In the utility model, the upstream surface of the upper stirring blade 5.2 is a bevel surface formed by connecting the first straight plate 5.21 and the second straight plate 5.22, and flow fields in different directions are generated when the upstream surface of the bevel surface structure is stirred, so that good mixing, mass transfer and heat transfer effects can be obtained.
In the utility model, the water facing back surface of the upper stirring blade 5.2 is the surface where the circular arc plate 5.23 is positioned, the water facing back surface of the upper stirring blade 5.2 is a streamline surface, the running resistance is smaller, and the cleaning is also convenient.
Because of the smaller power consumption of the upper stirring blade 5.2, the diameter of the upper stirrer 5 is preferably larger under certain power conditions, and the stirring area is enlarged, so that the utility model can be better applied.
Claims (5)
1. A stirrer for high-viscosity fluid fermentation comprises a tank body (1), a stirring shaft (2), a gas distributor (3), a bottom stirrer (4) and an upper stirrer (5); a stirring shaft (2) is arranged in the tank body (1), a bottom layer stirrer (4) is arranged at the bottom end part of the stirring shaft (2), a gas distributor (3) is arranged in the tank body (1) below the bottom layer stirrer (4), gas distribution holes are formed in the gas distributor (3), a driving component is arranged outside the tank body (1), the stirring shaft (2) is driven by the driving component, and a plurality of upper stirrers (5) are arranged on the stirring shaft (2) above the bottom layer stirrer (4) at intervals;
the method is characterized in that: the upper stirrer (5) comprises a hub shaft sleeve (5.1) and upper stirring blades (5.2), wherein a mounting hole for connecting a stirring shaft (2) is formed in the center of the hub shaft sleeve (5.1), and at least two upper stirring blades (5.2) are fixed on the outer circle of the hub shaft sleeve (5.1); the upper stirring paddle (5.2) comprises a first straight plate (5.21), a second straight plate (5.22) and an arc plate (5.23), wherein the long sides of the first straight plate (5.21) are respectively connected with the long sides of the second straight plate (5.22) and the long sides of the arc plate (5.23), the long sides of the second straight plate (5.22) are respectively connected with the long sides of the first straight plate (5.21) and the long sides of the arc plate (5.23), the long sides of the arc plate (5.23) are respectively connected with the long sides of the first straight plate (5.21) and the long sides of the second straight plate (5.22), and the widths of the first straight plate (5.21), the second straight plate (5.22) and the arc plate (5.23) are gradually increased from the outer end to the inner end.
2. The mixer for fermenting high-viscosity fluid according to claim 1, wherein: the upper stirring blade (5.2) is of a hollow structure.
3. The mixer for fermenting high-viscosity fluid according to claim 1, wherein: the included angle between the first straight plate (5.21) and the second straight plate (5.22) is 90-145 degrees.
4. The mixer for fermenting high-viscosity fluid according to claim 1, wherein: the ratio of the rotation diameter of the upper stirring blade (5.2) to the inner diameter of the tank body (1) is (0.4-0.95): 1.
5. The mixer for fermenting high-viscosity fluid according to claim 1, wherein: the ratio of the distance between two adjacent upper stirrers (5) to the inner diameter of the tank (1) is (0.4-1.2): 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322118921.5U CN220685073U (en) | 2023-08-08 | 2023-08-08 | Stirrer for high-viscosity fluid fermentation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322118921.5U CN220685073U (en) | 2023-08-08 | 2023-08-08 | Stirrer for high-viscosity fluid fermentation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220685073U true CN220685073U (en) | 2024-03-29 |
Family
ID=90369471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322118921.5U Active CN220685073U (en) | 2023-08-08 | 2023-08-08 | Stirrer for high-viscosity fluid fermentation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220685073U (en) |
-
2023
- 2023-08-08 CN CN202322118921.5U patent/CN220685073U/en active Active
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