CN115400681A - Variable-diameter stirring reactor for enhancing rotational flow - Google Patents
Variable-diameter stirring reactor for enhancing rotational flow Download PDFInfo
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- CN115400681A CN115400681A CN202210905358.3A CN202210905358A CN115400681A CN 115400681 A CN115400681 A CN 115400681A CN 202210905358 A CN202210905358 A CN 202210905358A CN 115400681 A CN115400681 A CN 115400681A
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- 238000003756 stirring Methods 0.000 title claims abstract description 114
- 230000002708 enhancing effect Effects 0.000 title claims description 7
- 239000007788 liquid Substances 0.000 claims description 22
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 239000004744 fabric Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 7
- 238000005728 strengthening Methods 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 description 15
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- KJFMBFZCATUALV-UHFFFAOYSA-N phenolphthalein Chemical compound C1=CC(O)=CC=C1C1(C=2C=CC(O)=CC=2)C2=CC=CC=C2C(=O)O1 KJFMBFZCATUALV-UHFFFAOYSA-N 0.000 description 12
- 239000000243 solution Substances 0.000 description 10
- 238000013019 agitation Methods 0.000 description 5
- 230000000739 chaotic effect Effects 0.000 description 4
- 239000007791 liquid phase Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 239000002585 base Substances 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- 238000005562 fading Methods 0.000 description 3
- 238000006386 neutralization reaction Methods 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- GMVPRGQOIOIIMI-DODZYUBVSA-N 7-[(1R,2R,3R)-3-hydroxy-2-[(3S)-3-hydroxyoct-1-enyl]-5-oxocyclopentyl]heptanoic acid Chemical compound CCCCC[C@H](O)C=C[C@H]1[C@H](O)CC(=O)[C@@H]1CCCCCCC(O)=O GMVPRGQOIOIIMI-DODZYUBVSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004042 decolorization Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 235000010981 methylcellulose Nutrition 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- SWGJCIMEBVHMTA-UHFFFAOYSA-K trisodium;6-oxido-4-sulfo-5-[(4-sulfonatonaphthalen-1-yl)diazenyl]naphthalene-2-sulfonate Chemical compound [Na+].[Na+].[Na+].C1=CC=C2C(N=NC3=C4C(=CC(=CC4=CC=C3O)S([O-])(=O)=O)S([O-])(=O)=O)=CC=C(S([O-])(=O)=O)C2=C1 SWGJCIMEBVHMTA-UHFFFAOYSA-K 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/50—Mixing receptacles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/112—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/19—Stirrers with two or more mixing elements mounted in sequence on the same axis
- B01F27/191—Stirrers with two or more mixing elements mounted in sequence on the same axis with similar elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
The invention provides a reducing stirring reactor for strengthening rotational flow. The variable-diameter stirring reactor utilizes the macroscopic asymmetry of the long axial surface and the short axial surface of the elliptical trough to ensure that the macroscopic flow in the elliptical stirring reactor presents an asymmetric form. The asymmetric shape of the stirring tank is utilized to destroy the symmetry of macroscopic flow, compared with modes of adding a baffle, eccentrically stirring and the like, the method does not increase energy consumption or increase equipment vibration, and is an economical and simple mixing strengthening mode.
Description
Technical Field
The invention relates to the technical field of stirring reactors, in particular to a variable-diameter stirring reactor for strengthening rotational flow.
Background
The stirring reactor is widely applied to industrial processes of chemical industry, oil refining, pharmacy, polymerization and the like, and the market share of the stirring reactor is about 70%. However, stirred reactors in commercial use tend to form symmetric macroscopic flow fields. When the stirring liquid is a low viscosity liquid, a poor mixing zone called a solid revolution part is formed in the middle of the stirring tank. The solid rotating part is a liquid column with the diameter about seven tenths of the diameter of the impeller, and the liquid rotates at the same angular speed as the impeller, so that no shearing occurs between the fluid units in the liquid, and mass exchange is difficult to occur between the liquid inside and outside the liquid column.
Under the current technical conditions, in order to eliminate the solid rotary part, a mode of adding a baffle on the side wall of the tank and eccentrically stirring is generally adopted. The baffle can effectively prevent the formation of the fluid rotating part, and compared with the wall surface without the baffle, the fluid can deflect in the flowing direction after meeting the baffle, and the rotating area is eliminated. However, the addition of the baffle plate can greatly increase the power consumption, and according to measurement and calculation, under the condition that the stirring rotating speed is not changed, the power consumption after the baffle plate is added is about 3-8 times of the original power consumption. Fluid circulation rings with different sizes can be formed on the eccentric side and the other side by adopting an eccentric stirring mode, so that the symmetry of a macroscopic flow field in the cylindrical stirring reactor is effectively destroyed, and the mixing efficiency is improved. However, the fluid divided by the eccentric stirring mode is asymmetric, and the impact force of the stirred fluid on the wall of the reactor is also asymmetric, so that the vibration of the stirring reactor is aggravated, and the potential threat is brought to the long-term stable operation and safe operation of equipment.
Therefore, the structure of the stirring reactor is optimized to eliminate the solid revolving part, the product performance of the reactor is improved, and the stirring reactor has huge application prospect and potential economic value.
Disclosure of Invention
The invention aims to provide a reducing stirring reactor for strengthening rotational flow so as to solve the problems in the prior art.
The technical scheme adopted for achieving the purpose of the invention is that the reducing stirring reactor for strengthening rotational flow comprises a stirring tank, a sealing head and a stirring device.
The stirring tank is of a barrel structure. The cross section of the stirring tank is oval. An opening at the upper end of the barrel body is sealed by a sealing head. And the end socket is provided with a manhole communicated with the inner cavity of the stirring tank. The head intercommunication is provided with the inlet pipe. The feed pipe extends to the inside of the agitation tank. And a discharge pipe is communicated with the bottom of the stirring tank.
The stirring device comprises a driving motor, a stirring shaft and a stirring paddle. The driving motor is arranged above the end socket. The stirring shaft vertically penetrates through the seal head. The stirring shaft is driven by a driving motor. And a plurality of layers of stirring paddles are arranged on the stirring shaft.
Further, the stirring tank and the end enclosure are in sealed connection through flanges.
Furthermore, the major axis of the ellipse corresponding to the cross section of the stirring tank is L, and the minor axis is D. D/L = 0.4-0.8.
Further, the stirring paddle is one or a combination of any more of a turbine type, a paddle type, an anchor type, a cloth Lu Majin type, a screw type and a helical ribbon type.
Furthermore, the stirring reactor is used for efficient mixing reaction of low-viscosity liquid, and the uniform stirring or sufficient reaction of the low-viscosity liquid is promoted. The agitation tank is used for containing low viscosity liquid. The paddle is immersed in a low viscosity liquid.
The technical effects of the invention are undoubted:
A. by utilizing the macroscopic asymmetry of the long axial surface and the short axial surface of the elliptical trough, the macroscopic flow in the elliptical stirring reactor presents an asymmetric form, and the rotational flow of a flow field is improved;
B. the reactor does not need internal components such as a baffle plate, a guide cylinder and the like; compared with the modes of adding the baffle, eccentrically stirring and the like, the method does not increase energy consumption or increase equipment vibration, saves materials, reduces energy consumption, is easy to clean, and is an economic and simple mixing strengthening mode;
C. the rigid-flexible combined stirring paddle can be mutually coupled with the elliptical stirring reactor, so that the rotational flow in the stirring tank is effectively strengthened; the elliptic stirring tank can overcome columnar backflow, effectively enhances the axial flow of fluid and finally realizes rotational flow; the variable diameter characteristic of the elliptical trough destroys the symmetrical structure of the flow field, the columnar backflow flow field is converted into a rotational flow field, and meanwhile, the rigid-flexible combined stirring paddle is coupled, and the characteristic that the rigid-flexible combined stirring paddle strengthens chaotic mixing of fluid is utilized, so that the strengthened fluid rotational flow flowing and chaotic mixing are finally realized.
Drawings
FIG. 1 is a schematic view of a variable diameter stirred reactor;
FIG. 2 is a schematic view of an elliptical stirring reactor;
FIG. 3 is a schematic diagram of an experimental apparatus for measuring performance of an elliptical stirring reactor;
FIG. 4 is a six straight blade disc turbine blade mixing process;
FIG. 5 is a time to fade comparison of a turbine paddle mixing process;
FIG. 6 is a schematic view of a paddle.
Detailed Description
The present invention is further illustrated by the following examples, but it should not be construed that the scope of the above-described subject matter is limited to the following examples. Various substitutions and alterations can be made without departing from the technical idea of the invention and the scope of the invention is covered by the present invention according to the common technical knowledge and the conventional means in the field.
Example 1:
referring to fig. 1 and 2, in order to break the symmetry and periodicity of the flow field, the embodiment provides a variable-diameter stirring reactor for enhancing the rotational flow, which comprises a stirring tank 4, a sealing head and a stirring device.
The stirring tank 4 is of a barrel structure. The cross section of the stirring tank 4 is oval. An opening at the upper end of the barrel body is sealed by a sealing head. And a manhole communicated with the inner cavity of the stirring tank 4 is formed in the end socket. The head intercommunication is provided with the inlet pipe. The feed pipe extends to the inside of the agitation tank 4. And a discharge pipe is communicated with the bottom of the stirring tank 4.
The stirring device comprises a driving motor 1, a stirring shaft 2 and a stirring paddle 3. The driving motor 1 is arranged above the end socket. The stirring shaft 2 vertically penetrates through the seal head. The stirring shaft 2 is driven by a driving motor 1. And a plurality of layers of stirring paddles 3 are arranged on the stirring shaft 2. Figures 2a and 2b are different views of an elliptical stirred reactor configuration.
In this embodiment, the flow field in the elliptical stirring reactor is asymmetric by using the macroscopic asymmetry between the major axial surface and the minor axial surface of the elliptical trough. The use of an asymmetric shape of the stirred tank to break the symmetry of the macroscopic flow is undoubtedly a more economical and efficient way than the addition of baffles and eccentric stirring.
Example 2:
the main structure of the present embodiment is the same as that of embodiment 1, wherein the stirring tank 4 and the end enclosure are hermetically connected by a flange.
Example 3:
the main structure of this embodiment is the same as that of embodiment 1, wherein the major axis of the ellipse corresponding to the cross section of the stirring tank 4 is L, and the minor axis is D. D/L = 0.4-0.8.
Example 4:
the main structure of this embodiment is the same as that of embodiment 1, wherein the stirring paddle 3 is one or a combination of any two of a turbine type, a paddle type, an anchor type, a cloth Lu Majin type, a screw type and a helical ribbon type.
Example 5:
the main structure of this embodiment is the same as that of embodiment 1, wherein, referring to fig. 6, the stirring paddle 3 includes at least two circular disk bodies 301, the same number of flexible ropes 302 as 301, and a plurality of rigid blades 303.
Each disc body 301 is fixed to the stirring shaft 2. The stirring shaft 2 penetrates through the central hole of each disc body 301. Each disc body 301 is fixed with a number of rigid paddles 303. These rigid blades 303 are inserted around the disk 301 radially around the stirring shaft 2.
Each rigid paddle 303 has a circular through hole. Each disc body 301 is provided with a flexible cord 302. After a flexible rope 302 sequentially penetrates through each circular through hole of all the rigid paddles 303 around a circular disc body 301, the two ends of the flexible rope 302 are connected by using a connecting buckle 304.
The rigid-flexible combined stirring paddle can be mutually coupled with the elliptical stirring reactor, so that the rotational flow in the stirring tank is effectively strengthened; the elliptic stirring tank can overcome columnar backflow, effectively enhances the axial flow of fluid and finally realizes rotational flow; the variable diameter characteristic of the elliptical trough destroys the symmetrical structure of the flow field, the columnar backflow flow field is converted into a rotational flow field, and meanwhile, the rigid-flexible combined stirring paddle is coupled, and the characteristic that the rigid-flexible combined stirring paddle strengthens chaotic mixing of fluid is utilized, so that the strengthened fluid rotational flow flowing and chaotic mixing are finally realized.
Example 6:
the main structure of this embodiment is the same as that of embodiment 1, wherein, in this embodiment, the stirring reactor is used for efficient mixing reaction of low-viscosity liquid, and promotes the low-viscosity liquid to be uniformly stirred or fully reacted. The agitation tank 4 is used for containing a low viscosity liquid. The paddles 3 are immersed in a low viscosity liquid.
Example 7:
referring to fig. 3, this example is used to verify the effectiveness of examples 1-5. In the present embodiment, a torque sensor 5 is disposed on the stirring shaft 2. A camera 6 is arranged outside the agitation tank 4. The torque sensor 5 and the camera 6 are both connected with a computer 7.
Stirring the fluid at 3.0% of carboxylic acidSodium methyl cellulose (CMC) aqueous solution, and the mixing time of the elliptical stirring reactor is measured by an acid-base neutralization decoloration method. The specific implementation process is that 1ml of phenolphthalein reagent is added into the tank and fully stirred, so that the phenolphthalein indicator is fully and uniformly dispersed in the liquid phase. Then adding 20ml of NaOH solution (the concentration is 1 mol/L), fully stirring to ensure that the NaOH solution is fully dispersed in the liquid phase, and because the phenolphthalein indicator shows red when meeting the alkaline solution, until the interior of the tank shows uniform purple red. Adjusting the rotating speed of the motor 1, opening the installed camera 6, and adding 10ml of H from the top of the stirring tank after the rotating speed is stable 2 SO 4 The camera started timing at the same time as the solution (concentration of 1 mol/L) and the color change of the liquid in the tank was recorded all the way until the purple color disappeared completely. The torque time series is collected by the torque sensor 5 and transmitted to the computer 7.
In this example, the experimental conditions were: rotating at 200rpm, making the blade be six straight She Kaishi vortex flow (small hole is opened at the top end of the blade), making the liquid phase be 3% CMC water solution, making the color developing agent be phenolphthalein reagent, making the alkali liquor be 1mol/L NaOH solution, making the acid liquor be 2mol/L H 2 SO 4 And (3) solution. No baffle is arranged.
The experimental results are as follows: the mixing time is measured by an acid-base neutralization reaction decolorization method, and the acid-base neutralization reaction is a rapid reaction, so that the color fading time of the phenolphthalein indicator can be considered as the mixing time. It is apparent from fig. 3 that in the mixed liquid with equal height and area, the color fading speed in the elliptical groove is obviously faster than that in the circular groove, i.e. the mixing effect in the elliptical groove is obviously better than that in the circular groove. The phenomenon shown in fig. 4 illustrates that the asymmetric flow field of the elliptical trough can effectively enhance fluid mixing, shorten mixing time and improve mixing efficiency.
An equal-height round tank stirred reactor was designed as comparative example 1. The experimental conditions of comparative example 1 were 200rpm, the paddle was vortex pulp (small holes were made at the tip of the blade), the liquid phase was a 3% CMC aqueous solution, the color developer was phenolphthalein reagent, the alkali solution was 1mol/L NaOH solution, and the acid solution was 2mol/L H2SO4 solution. No baffle is arranged.
The experimental results are as follows: as shown in fig. 5, it was found in the experiment that when the indicator in the tank substantially faded and photographs were taken of the fading of the fluid in the elliptical tank at different times from the circular tank, the experimental results showed that the mixing time required for the circular tank was about 2 times that of the elliptical tank. It is further described that the design of the stirred reactor with an oval shape is effective in enhancing the mixing of single-phase liquids without additional expenditure of power and without the need for more complicated operation.
Claims (6)
1. A diameter-variable stirring reactor for enhancing rotational flow is characterized in that: comprises a stirring tank (4), a seal head and a stirring device;
the stirring tank (4) is of a barrel structure; the cross section of the stirring tank (4) is oval; an opening at the upper end of the barrel body is sealed by a sealing head; a manhole communicated with the inner cavity of the stirring tank (4) is formed in the end socket; the end socket is communicated with a feeding pipe; the feeding pipe extends to the inside of the stirring tank (4); the bottom of the stirring tank (4) is communicated with a discharge pipe;
the stirring device comprises a driving motor (1), a stirring shaft (2) and a stirring paddle (3); the driving motor (1) is arranged above the end enclosure; the stirring shaft (2) vertically penetrates through the seal head; the stirring shaft (2) is driven by a driving motor (1); the stirring shaft (2) is provided with a plurality of layers of stirring paddles (3).
2. The swirl flow enhanced variable diameter stirred reactor according to claim 1, wherein: the stirring tank (4) and the end enclosure are in sealed connection by flanges.
3. The variable diameter stirring reactor for enhancing swirling flow according to claim 1, wherein: the major axis of an ellipse corresponding to the cross section of the stirring tank (4) is L, and the minor axis is D; D/L = 0.4-0.8.
4. The variable diameter stirring reactor for enhancing swirling flow according to claim 1, wherein: the stirring paddle (3) is in one or a combination of any more of a turbine type, a paddle type, an anchor type, a cloth Lu Majin type, a screw type and a helical ribbon type.
5. The swirl flow enhanced variable diameter stirred reactor according to claim 4, wherein: the stirring paddle (3) comprises at least two disc bodies (301), flexible ropes (302) the number of which is the same as that of the disc bodies (301), and a plurality of rigid blades (303);
each disc body (301) is fixed on the stirring shaft (2); the stirring shaft (2) penetrates through the central hole of each disc body (301); each disc body (301) is fixed with a plurality of rigid blades (303); the rigid blades (303) are inserted around the disc body (301) and radially surround the stirring shaft (2);
each rigid paddle (303) is provided with a circular through hole; each disc body (301) is provided with a flexible rope (302); after a flexible rope (302) sequentially penetrates through each circular through hole of all rigid paddles (303) around a disc body (301), two ends of the flexible rope (302) are connected by a connecting buckle (304).
6. The swirl flow enhanced variable diameter stirring reactor according to any one of claims 1 to 5, characterized in that: the stirring reactor is used for high-efficiency mixing reaction of low-viscosity liquid, and promotes the low-viscosity liquid to be uniformly stirred or fully reacted; the stirring tank (4) is used for containing low-viscosity liquid; the stirring paddle (3) is immersed in a low viscosity liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210905358.3A CN115400681B (en) | 2022-07-29 | 2022-07-29 | Reducing stirring reactor for strengthening rotational flow |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210905358.3A CN115400681B (en) | 2022-07-29 | 2022-07-29 | Reducing stirring reactor for strengthening rotational flow |
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| Publication Number | Publication Date |
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| CN115400681A true CN115400681A (en) | 2022-11-29 |
| CN115400681B CN115400681B (en) | 2023-10-31 |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4962218A (en) * | 1988-11-07 | 1990-10-09 | Union Carbide Chemicals And Plastics Company Inc. | Silicone polyether copolymers and polyurethane foams prepared therefrom |
| CN2774627Y (en) * | 2005-03-10 | 2006-04-26 | 张继民 | Double focus stirring biochemical reactor |
| CN205672807U (en) * | 2016-06-17 | 2016-11-09 | 青海极域生物资源开发有限公司 | Trough type mixing machine |
| US20170183617A1 (en) * | 2015-12-29 | 2017-06-29 | Life Technologies Corporation | Fluid mixing system with laterally displaced flexible drive lines and methods of use |
| CN107278170A (en) * | 2016-11-08 | 2017-10-20 | 重庆大学 | A kind of hard and soft Combined stirring paddle for improving mixing effect of fluid |
| US20180065096A1 (en) * | 2014-08-13 | 2018-03-08 | Versalis S.P.A. | Rotor and stirring device |
| CN107890845A (en) * | 2017-11-29 | 2018-04-10 | 重庆大学 | It is a kind of to improve suction capactity and the Combined stirring paddle of mixing efficiency |
| US20190085279A1 (en) * | 2016-08-21 | 2019-03-21 | Insectergy, Llc | Insect and cannabis production systems and methods |
| CN111249941A (en) * | 2020-02-10 | 2020-06-09 | 深圳市尚水智能设备有限公司 | Impeller assembly for dispersing solid in liquid and solid-liquid mixing equipment using same |
| CN215233475U (en) * | 2021-05-31 | 2021-12-21 | 厦门象屿兴泓科技发展有限公司 | Silica flour blending device |
-
2022
- 2022-07-29 CN CN202210905358.3A patent/CN115400681B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4962218A (en) * | 1988-11-07 | 1990-10-09 | Union Carbide Chemicals And Plastics Company Inc. | Silicone polyether copolymers and polyurethane foams prepared therefrom |
| CN2774627Y (en) * | 2005-03-10 | 2006-04-26 | 张继民 | Double focus stirring biochemical reactor |
| US20180065096A1 (en) * | 2014-08-13 | 2018-03-08 | Versalis S.P.A. | Rotor and stirring device |
| US20170183617A1 (en) * | 2015-12-29 | 2017-06-29 | Life Technologies Corporation | Fluid mixing system with laterally displaced flexible drive lines and methods of use |
| CN205672807U (en) * | 2016-06-17 | 2016-11-09 | 青海极域生物资源开发有限公司 | Trough type mixing machine |
| US20190085279A1 (en) * | 2016-08-21 | 2019-03-21 | Insectergy, Llc | Insect and cannabis production systems and methods |
| CN107278170A (en) * | 2016-11-08 | 2017-10-20 | 重庆大学 | A kind of hard and soft Combined stirring paddle for improving mixing effect of fluid |
| CN107890845A (en) * | 2017-11-29 | 2018-04-10 | 重庆大学 | It is a kind of to improve suction capactity and the Combined stirring paddle of mixing efficiency |
| CN111249941A (en) * | 2020-02-10 | 2020-06-09 | 深圳市尚水智能设备有限公司 | Impeller assembly for dispersing solid in liquid and solid-liquid mixing equipment using same |
| CN215233475U (en) * | 2021-05-31 | 2021-12-21 | 厦门象屿兴泓科技发展有限公司 | Silica flour blending device |
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