CN115400681B - Reducing stirring reactor for strengthening rotational flow - Google Patents
Reducing stirring reactor for strengthening rotational flow Download PDFInfo
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- CN115400681B CN115400681B CN202210905358.3A CN202210905358A CN115400681B CN 115400681 B CN115400681 B CN 115400681B CN 202210905358 A CN202210905358 A CN 202210905358A CN 115400681 B CN115400681 B CN 115400681B
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- stirring
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- stirring tank
- paddles
- reactor
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- 238000003756 stirring Methods 0.000 title claims abstract description 112
- 238000005728 strengthening Methods 0.000 title claims abstract description 9
- 239000007788 liquid Substances 0.000 claims description 22
- 238000007789 sealing Methods 0.000 claims description 18
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 230000002708 enhancing effect Effects 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 description 16
- 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 9
- 238000000034 method Methods 0.000 description 6
- 238000013019 agitation Methods 0.000 description 4
- 239000001768 carboxy methyl cellulose Substances 0.000 description 4
- 230000000739 chaotic effect Effects 0.000 description 4
- 239000003153 chemical reaction reagent Substances 0.000 description 4
- 239000007791 liquid phase Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 239000002585 base Substances 0.000 description 3
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 3
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 3
- 238000006386 neutralization reaction Methods 0.000 description 3
- 101001018064 Homo sapiens Lysosomal-trafficking regulator Proteins 0.000 description 2
- 102100033472 Lysosomal-trafficking regulator Human genes 0.000 description 2
- 235000010703 Modiola caroliniana Nutrition 0.000 description 2
- 244000038561 Modiola caroliniana Species 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000004042 decolorization Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000005562 fading Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000006467 substitution reaction Methods 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
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000003670 easy-to-clean Effects 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
- 239000012071 phase Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 description 1
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
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
Abstract
The invention provides a variable-diameter stirring reactor for strengthening rotational flow. The reducing stirring reactor utilizes the macroscopic asymmetry of the long axial surface and the short axial surface of the elliptical groove 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, and compared with the modes of adding a baffle plate, eccentric stirring and the like, the stirring tank has the advantages that the energy consumption is not increased, the vibration of the weighting equipment is not caused, and the stirring tank 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 stirred reactor is widely applied to industrial processes such as chemical industry, oil refining, pharmacy, polymerization and the like, and the market share of the stirred reactor is about 70 percent. However, stirred reactors for commercial applications are prone to forming symmetric macroscopic flow fields. When the stirring liquid is a low-viscosity liquid, a so-called poor mixing region of the solid turning part is formed in the middle of the stirring tank. The solid rotating part is a liquid column with a diameter of about seven tenth of the diameter of the impeller, and the liquid rotates at the same angular velocity as the impeller, so that no shearing occurs between 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 turning part, a mode of adding baffles on the side wall of a groove and eccentrically stirring is generally adopted. The baffle can effectively prevent the formation of the fluid turning part, compared with the wall surface without the baffle, the fluid is deflected in the flowing direction after encountering the baffle, and the turning area is eliminated. However, the addition of the baffle plate can greatly increase the power consumption, and according to calculation, the power consumption is about 3-8 times of the original power consumption after the baffle plate is added under the condition of unchanged stirring rotation speed. The eccentric stirring mode is adopted to form fluid circulation rings with different sizes on the eccentric side and the other side, 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 split by the eccentric stirring mode is asymmetric, the impact force of the stirred fluid on the wall is also asymmetric, the vibration of the stirring reactor is aggravated, and the potential threat is brought to the long-term stable operation and the safe operation of the equipment.
Therefore, the structure of the stirring reactor is optimized, the solid rotating part is eliminated, 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 variable-diameter stirring reactor for strengthening rotational flow so as to solve the problems in the prior art.
The technical scheme adopted for realizing the purpose of the invention is that the variable-diameter stirring reactor for strengthening the 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 groove is elliptical. The upper end opening of the barrel body is sealed by a sealing head. And a manhole communicated with the inner cavity of the stirring tank is formed in the sealing head. The end socket is communicated with a feed pipe. The feeding pipe extends to the inside of the stirring tank. The bottom of the stirring tank is communicated with a discharging pipe.
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 sealing head. The stirring shaft is driven by a driving motor. A plurality of layers of stirring paddles are arranged on the stirring shaft.
Further, the stirring tank and the sealing head are in sealing connection by adopting a flange.
Further, 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 to 0.8.
Further, the stirring paddle is one or a combination of a plurality of turbine type, paddle type, anchor type, cloth Lu Majin type, screw type and spiral belt type.
Further, the stirring reactor is used for high-efficiency mixing reaction of low-viscosity liquid, and the stirring of the low-viscosity liquid is promoted to be uniform or the reaction is sufficient. The agitation tank is for containing a low viscosity liquid. The paddles are immersed in a low viscosity liquid.
The technical effects of the invention are undoubted:
A. the macroscopic asymmetry of the long axial surface and the short axial surface of the elliptical groove is utilized to ensure that the macroscopic flow in the elliptical stirring reactor presents an asymmetric form, thereby improving the rotational flow of the flow field;
B. the reactor does not need inner components such as a baffle, a guide cylinder and the like; compared with the modes of adding a baffle, eccentric stirring and the like, the method does not increase energy consumption and does not vibrate a weighting device, saves materials, reduces energy consumption and is easy to clean, and is an economical and simple mixing strengthening mode;
C. the rigid-flexible combined stirring paddles can be mutually coupled with the elliptical stirring reactor, so that the rotational flow in the stirring tank is effectively enhanced; the elliptical stirring tank can overcome columnar backflow, so that the axial flow of fluid is effectively enhanced, and rotational flow is finally realized; the diameter-changing characteristic of the elliptical groove breaks the symmetry structure of the flow field, so that the columnar backflow flow field is converted into a rotational flow field, meanwhile, the rigid-flexible combined stirring paddles are coupled, the characteristic of reinforcing the chaotic mixing of the fluid by the rigid-flexible combined paddles is utilized, and finally, the reinforced rotational flow and chaotic mixing of the fluid are realized.
Drawings
FIG. 1 is a schematic diagram 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 elliptical stirring reactor performance measurement experimental apparatus;
FIG. 4 is a six straight blade disk turbine blade mixing process;
FIG. 5 is a comparison of turbine blade mixing process fade time;
fig. 6 is a schematic view of a stirring paddle.
Detailed Description
The present invention is further described below with reference to examples, but it should not be construed that the scope of the above subject matter of the present invention is limited to the following examples. Various substitutions and alterations are made according to the ordinary skill and familiar means of the art without departing from the technical spirit of the invention, and all such substitutions and alterations are intended to be included in the scope of the invention.
Example 1:
referring to fig. 1 and 2, in order to break the symmetry and periodicity of the flow field, this embodiment provides a variable diameter stirring reactor for enhancing the swirling flow, which includes 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 groove 4 is elliptical. The upper end opening 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 sealing head. The end socket is communicated with a feed pipe. The feed pipe extends into the stirred tank 4. The bottom of the stirring tank 4 is communicated with a discharging pipe.
The stirring device comprises a driving motor 1, a stirring shaft 2 and stirring paddles 3. The driving motor 1 is arranged above the sealing head. The stirring shaft 2 vertically penetrates through the sealing 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. Fig. 2a and 2b are different views of an elliptical stirred reactor configuration.
In the embodiment, the asymmetry of the major axis surface and the minor axis surface of the elliptical groove in the macroscopic manner is utilized, so that the flow field in the elliptical stirring reactor presents an asymmetric form. The use of an asymmetric shape of the agitation tank breaks the symmetry of the macroscopic flow, which is clearly a more economical and efficient way to operate than the addition of baffles and eccentric agitation.
Example 2:
the main structure of the embodiment is the same as that of embodiment 1, wherein the stirring tank 4 and the sealing head are in flange sealing connection.
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 to 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 more of turbine type, paddle type, anchor type, cloth Lu Majin type, screw type and screw 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 disc bodies 301, flexible ropes 302 with the same number as 301, and a plurality of rigid paddles 303.
Each disc body 301 is fixed to the stirring shaft 2. The stirring shaft 2 penetrates through the center hole of each disc body 301. Each disc 301 is fixed with a number of rigid paddles 303. These rigid blades 303 are inserted around the disk body 301 and radially surround the stirring shaft 2.
Each rigid blade 303 has a circular through hole. Each disc 301 is provided with a flexible cord 302. After a flexible rope 302 penetrates through each circular through hole in all the rigid paddles 303 around a disc 301, the two ends of the flexible rope 302 are connected by a connecting buckle 304.
The rigid-flexible combined stirring paddles can be mutually coupled with the elliptical stirring reactor, so that the rotational flow in the stirring tank is effectively enhanced; the elliptical stirring tank can overcome columnar backflow, so that the axial flow of fluid is effectively enhanced, and rotational flow is finally realized; the diameter-changing characteristic of the elliptical groove breaks the symmetry structure of the flow field, so that the columnar backflow flow field is converted into a rotational flow field, meanwhile, the rigid-flexible combined stirring paddles are coupled, the characteristic of reinforcing the chaotic mixing of the fluid by the rigid-flexible combined paddles is utilized, and finally, the reinforced rotational flow and chaotic mixing of the fluid are 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 stirring of the low-viscosity liquid is promoted or the reaction is sufficient. The agitation tank 4 is for containing a low viscosity liquid. The stirring paddle 3 is immersed in a low viscosity liquid.
Example 7:
referring to fig. 3, this example was used to verify the validity of examples 1 to 5. In the present embodiment, a torque sensor 5 is arranged on the stirring shaft 2. A camera 6 is arranged outside the stirring tank 4. The torque sensor 5 and the camera 6 are connected with a computer 7.
The stirring fluid was 3.0% sodium carboxymethylcellulose (CMC) aqueous solution, and the mixing time of the elliptical stirring reactor was measured by an acid-base neutralization decolorization method. The specific implementation process is that 1ml of phenolphthalein reagent is added into a tank and stirred fully, so that the phenolphthalein indicator is dispersed in a liquid phase fully and uniformly. Then adding 20ml of NaOH solution (the concentration is 1 mol/L), and fully stirring to ensure that the NaOH solution is fully dispersed in the liquid phase until the phenolphthalein indicator becomes red when meeting alkaline solution until the interior of the tank becomes even mauve. The rotation speed of the motor 1 is regulated, the installed camera 6 is opened, and after the rotation speed is stabilized, 10ml of H is added from the top of the stirring tank 2 SO 4 The solution (1 mol/L concentration) was recorded at the same time as the camera started to time, and the color change of the liquid in the tank was recorded all the way until the mauve had completely disappeared. The torque time series is acquired by the torque sensor 5 and transmitted to the computer 7.
In this example, experimental conditions: rotating speed of 200rpm, pulpThe leaves are six-straight She Kaishi vortex pulp (small holes are formed in the top ends of the leaves), the liquid phase is a CMC aqueous solution with 3 percent, the color reagent is phenolphthalein reagent, the alkali liquor is a NaOH solution with the concentration of 1mol/L, and the acid liquor is H with the concentration of 2mol/L 2 SO 4 A solution. No baffle is arranged.
Experimental results: the mixing time is determined by an acid-base neutralization reaction decolorization method, and since the acid-base neutralization reaction is a rapid reaction, the time for the phenolphthalein indicator to fade can be considered as the mixing time. It is apparent from fig. 3 that in the mixed liquid with equal-height and equal-area, the fading speed in the elliptical trough is obviously faster than that in the circular trough, i.e. the mixing effect in the elliptical trough is obviously better than that in the circular trough. The phenomenon shown in fig. 4 illustrates that the asymmetric flow field of the elliptical trough can effectively strengthen the fluid mixing, shorten the mixing time and improve the mixing efficiency.
An equal-volume circular tank stirred reactor was designed as comparative example 1. The experimental conditions of comparative example 1 were a rotational speed of 200rpm, a vortex slurry (small holes are formed in the top ends of the blades), a 3% CMC aqueous solution as a liquid phase, a phenolphthalein reagent as a color developing agent, a NaOH solution as an alkali solution of 1mol/L, and an H2SO4 solution as an acid solution of 2 mol/L. No baffle is arranged.
Experimental results: as shown in FIG. 5, the indicator was found to fade substantially until the groove, and a photograph of the fading of the fluid in the elliptical groove was taken at a different time than the fluid in the circular groove, and the experimental results showed that the mixing time required for the circular groove was about 2 times that of the elliptical groove. Further describing that the design of the stirred reactor in an elliptical shape is effective to enhance the mixing of the single phase liquid without additional effort and without requiring more complex modes of operation.
Claims (2)
1. A reducing stirring reactor for strengthening rotational flow is characterized in that: comprises a stirring tank (4), a sealing head and a stirring device; the stirring device comprises a driving motor (1), a stirring shaft (2) and stirring paddles (3);
the stirring tank (4) is of a barrel structure; the cross section of the stirring groove (4) is elliptical; 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 to 0.8; the upper end opening of the barrel body is sealed by an end socket; a manhole communicated with the inner cavity of the stirring tank (4) is formed in the sealing head; the end socket is communicated with a feed 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 paddle (3) comprises at least two disc bodies (301), flexible ropes (302) with the same number as the disc bodies (301) and a plurality of rigid paddles (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 fixedly provided with a plurality of rigid paddles (303); the rigid paddles (303) are inserted around the disc body (301) and radially surround the stirring shaft (2);
each rigid blade (303) has 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 on all the rigid paddles (303) around a disc body (301), connecting the two ends of the flexible rope (302) by adopting a connecting buckle (304);
the driving motor (1) is arranged above the sealing head; the stirring shaft (2) vertically penetrates through the sealing head; the stirring shaft (2) is driven by a driving motor (1); a plurality of layers of stirring paddles (3) are arranged on the stirring shaft (2);
the stirring reactor is used for high-efficiency mixing reaction of low-viscosity liquid, and can promote 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.
2. A variable diameter stirred reactor for enhancing swirling flow according to claim 1, wherein: the stirring tank (4) and the sealing head are in sealing connection by adopting a flange.
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 |
Applications Claiming Priority (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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| Publication Number | Publication Date |
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| CN115400681A CN115400681A (en) | 2022-11-29 |
| CN115400681B true CN115400681B (en) | 2023-10-31 |
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|---|---|---|---|---|
| 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 |
| 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 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10738268B2 (en) * | 2016-08-21 | 2020-08-11 | Insectergy, Llc | Cannabis nanoemulsion methods |
| BR112017002273B1 (en) * | 2014-08-13 | 2022-05-03 | Versalis S.P.A. | Rotor, stirring device, method for preparing formed rotor blade or stator blade formed from airfoil and method for preparing airfoil formed from rotor blade or stator blade |
| CN108697999B (en) * | 2015-12-29 | 2021-11-09 | 生命科技股份有限公司 | Fluid mixing system with laterally displaced flexible drive wire and method of use |
-
2022
- 2022-07-29 CN CN202210905358.3A patent/CN115400681B/en active Active
Patent Citations (7)
| 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 |
| 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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| CN115400681A (en) | 2022-11-29 |
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