CN114768641B - Self-pressurizing high-speed mixing kettle - Google Patents
Self-pressurizing high-speed mixing kettle Download PDFInfo
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- CN114768641B CN114768641B CN202210369009.4A CN202210369009A CN114768641B CN 114768641 B CN114768641 B CN 114768641B CN 202210369009 A CN202210369009 A CN 202210369009A CN 114768641 B CN114768641 B CN 114768641B
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- 238000003756 stirring Methods 0.000 claims abstract description 46
- 239000000463 material Substances 0.000 claims abstract description 36
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 238000007599 discharging Methods 0.000 claims abstract description 8
- 238000009826 distribution Methods 0.000 claims description 9
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 210000001503 joint Anatomy 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 13
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000009775 high-speed stirring Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The invention relates to a self-pressurizing high-speed mixing kettle which comprises a kettle body and a stirring device, wherein the stirring device comprises a motor, a rotating shaft and stirring paddles. The bottom of the kettle body is provided with a feed inlet, a guide bearing bracket is fixedly arranged above the feed inlet, the main body of the guide bearing bracket is a guide cover, the bottom of the guide cover is communicated with the feed inlet in a sealing way, the radial space between the inner wall of the guide cover and a bearing seat in the middle of the guide cover is fixed by a blade plate, and a guide channel for communicating the feed inlet with the inside of the kettle body is formed between the blade plate; the bottom end of the rotating shaft penetrates through the bearing to extend into the feeding port, the extending section is fixedly connected with a first supercharging impeller, the rotating shaft is close to a section of fixedly connected with a second supercharging impeller at the upper end of the guide cover, the first supercharging impeller forms feeding supercharging and axial through flow, the second supercharging impeller converts materials axially flowing through the upper port of the guide cover into radial through flow towards the side face of the kettle body, and the top of the side face of the kettle body is provided with a discharging port. The structure is beneficial to improving the mixing effect and reducing the requirement of external feeding and pressure supply and the equipment investment cost.
Description
Technical Field
The invention relates to the field of mixing equipment, in particular to a self-pressurization high-speed mixing kettle.
Background
In the industries of chemical industry, biological engineering, pharmacy, environmental protection and the like, various liquids are required to be mixed, wherein the liquid-liquid mixing process accounts for about 50%, the quality of products is directly determined by the mixing effect, and the mixing process is mainly finished by adopting a mixing kettle and a static mixer at present. The static mixer has the characteristics of low cost and simple structure, but has the advantages of large space requirement for pipeline arrangement, large system resistance and high flow rate requirement, and is not suitable for materials with high viscosity and high mixing strength and is also not suitable for occasions with high mixing requirements of chemical reaction. The conventional mixing kettles are mostly operated intermittently, namely stirring and mixing are carried out after feeding, mixed materials are discharged after the mixing requirement is met, then the next kettle production is carried out, and when continuous production is carried out, multi-kettle alternate sequential production is adopted. Part of mixing kettles can be continuously produced, and an external pump is used for conveying upstream materials into the mixing kettles in a pressurized manner, but the materials are easy to form short circuits due to the fact that no flow guide partition plates are distributed in the kettles, so that the mixing effect is greatly reduced. In order to solve the problems, as disclosed in the Chinese patent literature, the patent publication number CN203829945U, the patent publication number 2014, 9 and 17 is entitled a high-efficiency multi-compartment dynamic mixing device, which comprises a dynamic mixing kettle body and a dynamic mixing stirrer, wherein the kettle body adopts a multi-compartment structure, and a continuous flow mode of bottom feeding and upper discharging is utilized to ensure that the residence time in a single cavity is long, short circuit is not easy to form, and the high-efficiency mixing is realized by matching with a plurality of stirring paddles, so that the liquid-liquid mixing and reaction requirements of the industries such as chemical industry, pharmacy and the like are met. However, the feeding power of the dynamic mixing device is completely dependent on power devices such as an external pump body and the like to realize continuous and efficient feeding and discharging, and has high requirements on feeding power, pipelines and stirring, and obviously, the cost input is still large. When the feeding power cannot be ensured, the stirring and mixing effects are often affected. Therefore, the problems of high requirement, high input cost and poor mixing effect of the existing mixing kettle continuous mixing production equipment are to be improved.
Disclosure of Invention
In order to overcome the defects, the invention aims to provide a self-pressurizing high-speed mixing kettle for solving the technical problems of higher requirements, higher input cost and poor continuous mixing effect of the existing similar mixing kettle. The aim is achieved by the following technical scheme.
The self-pressurizing high-speed mixing kettle comprises a kettle body and a stirring device, wherein the stirring device comprises a motor, a rotating shaft and stirring paddles, the motor is fixed at the top of the kettle body, the motor is in transmission connection with the rotating shaft, and the rotating shaft is sealed to extend into the kettle body to be connected with the stirring paddles; the kettle is characterized in that a feeding hole concentric with the rotating shaft is formed in the bottom of the kettle body, a diversion bearing bracket is fixedly arranged above the feeding hole, the main body of the diversion bearing bracket is a diversion cover, the bottom of the diversion cover is communicated with the feeding hole in a sealing way, a bearing seat is arranged in the middle of the diversion cover, a bearing for positioning the rotating shaft to rotate is arranged in the bearing seat, the inner wall of the diversion cover is fixed with the bearing seat in the radial direction through a blade, and a diversion channel for conducting the feeding hole and the inside of the kettle body is formed between the radially distributed blades; the rotary shaft bottom passes through the bearing and stretches into in the feed inlet, and stretch into the first booster impeller of one section fixed connection in the feed inlet, one section fixed connection second booster impeller that the pivot is close to the kuppe upper end, first booster impeller is right when rotating along with the pivot the material between port on feed inlet to the kuppe forms axial through-flow, the second booster impeller changes the radial through-flow towards cauldron body side with the material of port axial through-flow on the kuppe when rotating along with the pivot, the side of cauldron body is close to the top and is equipped with the discharge gate. Through the structure, the first supercharging impeller and the second supercharging impeller rotate along with the rotating shaft of the stirring device, the feeding supercharging of the feeding port is realized by the first supercharging impeller, the feeding is supercharged towards the circumferential surface of the kettle body by the second supercharging impeller, so that the material turning and rotational flow are formed at the bottom in the kettle body, the mixing effect is improved, the requirement of external feeding and pressure supply is effectively reduced, and the equipment input cost is reduced.
The kettle is characterized in that at least two layers of distributing guide baffle plates are arranged in the kettle body from bottom to top at intervals, the outer diameter of each distributing guide baffle plate is matched with the inner wall of the kettle body, openings are uniformly distributed on the distributing guide baffle plates along the outer circumference, mixed flow holes are formed between the openings and the inner wall of the kettle body, through holes concentric with the rotating shaft are formed in the middle of each distributing guide baffle plate, the aperture of each through hole is larger than the shaft diameter of the rotating shaft, vertical raised baffle plates are arranged between the through holes and the openings on the upper plate surfaces of the distributing guide baffle plates, and guide grooves are formed between adjacent openings of the distributing guide baffle plates along the circumferential direction. Through this structure, utilize the mixed hole of distribution water conservancy diversion baffle, through-hole, baffle, guiding gutter to realize the effectual reposition of redundant personnel of internal material of cauldron, mixed flow and water conservancy diversion, the time that the extension mixed stays improves the mixing effect, is favorable to the stirring state of steady material simultaneously, comparatively stable when making its final ejection of compact.
The stirring blade of the stirring device is positioned between the uppermost layer plate and the lowermost layer plate in the distribution guide partition plate. Through this structure, be favorable to the mixture of material, make final ejection of compact comparatively stable.
Baffle plates are fixedly arranged between adjacent distribution guide baffle plates in the kettle body along the circumferential direction of the inner wall of the kettle body. Through this structure, realize the choked flow to the radial direction of cauldron internal wall material to carry out the turbulent flow to the material, it is better to mix the effect.
The impeller plates in the guide bearing support form vortex guide, namely, the impeller plates serve as transition guide between axial through flow of the first booster impeller and radial through flow of the second booster impeller. Through this structure, the material of feed inlet changes into radial through-flow more steadily from axial through-flow.
And an auxiliary feeding interface is arranged at the bottom of the kettle body. Through this structure, the feed mixing of convenient auxiliary material.
And a defoaming plate is arranged at the top of the kettle body. By the structure, foam generated by high-speed stirring is eliminated, and the mixing process is stable.
The stirring device comprises a bearing support, at least two bearings for positioning the rotating shaft are arranged in the bearing support, the motor is fixed at the top of the bearing support, the motor is connected with the rotating shaft through a coupling, a flange type interface matched sealing ring is arranged between the bottom of the bearing support and the top of the kettle body to form sealing butt joint, the bottom of the bearing support is provided with a through hole for penetrating through the rotating shaft, and a rotary sealing piece is fixedly arranged at the through hole. The structure is a concrete stirring device mounting structure.
The stirring blade is used for stirring in radial flow, namely, the direction of the stirring blade for rotating and pushing the material is non-axial. Through this structure, form radial flow propelling movement to cauldron body inner wall with the material, form turbulent flow acceleration material mixing through the baffle to stop, improve the mixing effect.
The top of the kettle body is provided with an air inlet pressurizing port. Through this structure, the evacuation operation after the material mixing is finished is convenient.
The invention has the beneficial effects that: the kettle has the advantages that the whole structure is compact, the self-pressurization effect in the kettle body is realized, the requirement on external feeding and pressure supply is relatively low, the self-pressurization improves the stirring and mixing effect of materials in the kettle body, the mixing is more sufficient and efficient, and the kettle is suitable for being used as various stirring and mixing kettles with continuous mixing production requirements or the improvement of the same-column structure.
Drawings
FIG. 1 is a schematic view of the internal cross-sectional structure of the present invention, with section A framed.
Fig. 2 is an enlarged schematic view of the portion a in fig. 1.
FIG. 3 is a schematic cross-sectional view of a discharge port according to the present invention.
Fig. 4 is a schematic plan view of a dispensing baffle of the present invention.
The serial numbers and names in the figures are: 1. the kettle comprises a kettle body, 101, a feed inlet, 102, an auxiliary feed interface, 103, a discharge outlet, 104, a filter plate, 2, a diversion bearing bracket, 201, a diversion cover, 202, a blade plate, 203, a bearing seat, 3, a first supercharging impeller, 4, a second supercharging impeller, 5, a supporting piece, 6, a distribution diversion baffle plate, 601, a mixing flow hole, 602, a flow baffle plate, 603, a diversion groove, 604, a screw hole, 7, a baffle plate, 8, a stirring blade, 9, a defoaming plate, 10, a motor, 11, a coupling, 12, a bearing support, 13, a rotary sealing piece, 14 and a rotating shaft.
Detailed Description
The invention will now be further described with reference to the accompanying drawings.
As shown in fig. 1-4, the self-pressurizing high-speed mixing kettle comprises a kettle body 1 and a stirring device, wherein the stirring device comprises a motor 10, a coupler 11, a bearing support 12, a bearing, a rotary sealing element 13, a rotating shaft 14 and stirring paddles 8, the motor is fixed at the upper end of the bearing support, the motor is connected with the rotating shaft through the coupler, two bearings for positioning the rotating shaft to rotate are arranged in the bearing support, the rotating shaft penetrates through a perforation at the bottom of the bearing support to extend into the kettle body and be connected with the stirring paddles, and a rotary sealing element for rotating and sealing the rotating shaft is arranged at the perforation. The lower end of the bearing support is provided with a flange end which is in locking and sealing connection with the flange end at the top of the kettle body through a sealing gasket and a bolt piece. The bottom of the kettle body is provided with a feed inlet 101 concentric with the rotating shaft, a guide bearing support 2 is fixedly welded above the feed inlet, the main body of the guide bearing support is a guide cover 201, the bottom of the guide cover is communicated with the feed inlet in a sealing way, the middle of the guide cover is provided with a bearing seat 203, a bearing for positioning the rotating shaft to rotate is arranged in the bearing seat, the inner wall of the guide cover is fixed with the radial direction of the bearing seat through a welding blade 202, and a guide channel for conducting the feed inlet and the inner part of the kettle body is formed between the radially distributed blades. The bearing is passed to the pivot bottom and stretches into in the feed inlet, and stretch into the first booster impeller 3 of one section fixed connection in the feed inlet, the pivot is close to one section fixed connection second booster impeller 4 of kuppe upper end, first booster impeller forms axial through-flow to the material between the port on feed inlet to the kuppe when rotating along with the pivot, the second booster impeller changes the radial through-flow towards cauldron body side with the material of port axial through-flow on the kuppe when rotating along with the pivot, the side of cauldron body is close to the top and is equipped with discharge gate 103, be equipped with the filtration pore plate in the discharge gate.
At least two layers of distributing guide baffle plates 6 are arranged in the kettle body 1 from bottom to top at intervals, the outer diameter of each distributing guide baffle plate is matched with the inner wall of the kettle body, openings are uniformly distributed on the distributing guide baffle plates along the outer circumference, a mixing hole 601 is formed between each opening and the inner wall of the kettle body, through holes concentric with the rotating shaft are formed in the middle of each distributing guide baffle plate, the aperture of each through hole is larger than the shaft diameter of the rotating shaft 14, a vertically-raised flow baffle plate 602 is arranged between each through hole and each opening on the upper plate surface of each distributing guide baffle plate, and a flow guide groove 603 is formed between adjacent openings of each distributing guide baffle plate along the circumferential direction. The distributing guide baffle plate is fixed with a supporting piece arranged on the inner wall of the kettle body through a bolt piece. The stirring blade 8 of the stirring device is positioned between the uppermost plate and the lowermost plate in the distribution guide partition plates, one or two stirring blades are arranged between adjacent distribution guide partition plates, and the stirring blades are used for stirring in radial flow, namely, the direction of the stirring blades for rotating and pushing materials is non-axial. Baffle plates 7 are fixedly arranged between adjacent distribution guide baffle plates in the kettle body along the circumferential direction of the inner wall of the kettle body.
Further, in order to facilitate mixing of materials in the kettle body 1, an auxiliary feeding interface 102 is provided at the bottom of the kettle body. In order to make the axial flow of the material at the bottom of the kettle body changed from the axial flow of the first booster impeller 3 to the radial flow of the second booster impeller 4 smoother, the impeller plate 202 of the guide bearing bracket 2 forms vortex guide, i.e. the impeller plate is used as the transition guide between the axial flow of the first booster impeller and the radial flow of the second booster impeller. In order to eliminate foam generated by high-speed stirring in the kettle body, the mixing process is stable, and a defoaming plate 9 is fixedly arranged at the top of the kettle body. In order to facilitate the emptying operation in the kettle body, the top of the kettle body is provided with an air inlet pressurizing port.
When the mixing kettle is used, the feed inlet 101 of the mixing kettle is connected with an external feeding device, the discharge outlet 103 is connected with a discharge valve and a discharge pipeline, a return pipe is connected between the discharge pipeline and the feed inlet in a communicating manner, and a control valve is arranged in the return pipe, when a stirring device is started to work, the rotary shaft 14 drives the first pressurizing impeller 3 and the second pressurizing impeller 4 to work, the first pressurizing impeller pressurizes the material in the feed inlet to form feeding and forms axial through flow, the material enters the second pressurizing impeller along a diversion channel of the diversion bearing bracket 2, under the action of the second pressurizing impeller, the material is converted into radial through flow towards the side wall of the kettle body from the axial through flow, the secondary pressurizing is realized, at the moment, the mixing of the material can be effectively accelerated, the stirring effect is improved, the material is mixed for the first time along the wall surface of the kettle body after being pressurized, and the diversion, the diversion and diversion flow and diversion are realized under the action of the diversion baffle 6, the diversion is realized, the diversion is accelerated, the mixing of the material is gradually transferred upwards, and the material is sequentially passed through the action of each stirring blade, the diversion baffle and the baffle is gradually realized, and the diversion baffle is smoothly distributed under the diversion baffle and the diversion state when the diversion baffle is distributed, and the diversion state is realized. When the discharging is finished, the feeding device and the discharging port valve are closed, the return pipe is opened, the air inlet pressurizing port at the top of the kettle body is connected with external air supply equipment, and the discharging operation of the mixed materials in the kettle body is realized along the feeding port, the return pipe and the discharging pipeline.
The above description is intended to illustrate the technical means of the present invention, and not to limit the technical scope of the present invention. Obvious modifications or substitutions by one with ordinary skill in the art are within the scope of the present invention as defined by the appended claims.
Claims (9)
1. The self-pressurizing high-speed mixing kettle comprises a kettle body (1) and a stirring device, wherein the stirring device comprises a motor (10), a rotating shaft (14) and stirring paddles (8), the motor is fixed at the top of the kettle body, the motor is connected with the rotating shaft (14) in a transmission way, and the rotating shaft is hermetically stretched into the kettle body to be connected with the stirring paddles; the kettle is characterized in that a feed inlet (101) concentric with the rotating shaft (14) is arranged at the bottom of the kettle body (1), a guide bearing bracket (2) is fixedly arranged above the feed inlet, the main body of the guide bearing bracket is a guide cover (201), the bottom of the guide cover is communicated with the feed inlet in a sealing way, a bearing seat (203) is arranged in the middle of the guide cover, a bearing for positioning the rotating shaft to rotate is arranged in the bearing seat, the inner wall of the guide cover is fixed with the radial direction of the bearing seat through a blade plate (202), and a guide channel for conducting the feed inlet and the inside of the kettle body is formed between the radially distributed blade plate; the bottom end of the rotating shaft penetrates through the bearing to extend into the feeding port, a section of the rotating shaft, which extends into the feeding port, is fixedly connected with a first supercharging impeller (3), a section of the rotating shaft, which is close to the upper end of the guide cover, is fixedly connected with a second supercharging impeller (4), the first supercharging impeller forms axial through flow for materials between the feeding port and the upper port of the guide cover when rotating along with the rotating shaft, the second supercharging impeller converts the materials with the axial through flow at the upper port of the guide cover into radial through flow which faces the side surface of the kettle body when rotating along with the rotating shaft, and the side surface, which is close to the top, of the kettle body is provided with a discharging port (103); the impeller plates in the guide bearing support form vortex guide, namely, the impeller plates serve as transition guide between axial through flow of the first booster impeller and radial through flow of the second booster impeller.
2. The self-pressurizing high-speed mixing kettle according to claim 1, characterized in that at least two layers of distributing guide baffle plates (6) are arranged in the kettle body (1) from bottom to top at intervals, the outer diameter of each distributing guide baffle plate is matched with the inner wall of the kettle body, openings are uniformly distributed on the distributing guide baffle plates along the outer circumference, mixing holes (601) are formed between the openings and the inner wall of the kettle body, through holes concentric with the rotating shaft (14) are formed in the middle of each distributing guide baffle plate, the aperture of each through hole is larger than the shaft diameter of the rotating shaft, vertical raised baffle plates (602) are arranged on the upper plate surfaces of the distributing guide baffle plates between the through holes and the openings, and guide grooves (603) are formed between adjacent openings of the distributing guide baffle plates along the circumferential direction.
3. Self-pressurizing high-speed mixing tank according to claim 2, characterized in that the stirring blades (8) of the stirring device are located between the uppermost plate and the lowermost plate in the distribution baffle (6).
4. The self-pressurizing high-speed mixing kettle according to claim 2, wherein baffle plates (7) are fixedly arranged in the kettle body (1) between adjacent distribution guide baffle plates (6) along the circumferential direction of the inner wall of the kettle body.
5. The self-pressurizing high-speed mixing kettle according to claim 1, wherein an auxiliary feeding interface (102) is arranged at the bottom of the kettle body (1).
6. The self-pressurizing high-speed mixing kettle according to claim 1, wherein a defoaming plate (9) is arranged at the inner top of the kettle body (1).
7. The self-pressurizing high-speed mixing kettle according to claim 1, wherein the stirring device comprises a bearing support (12), at least two bearings positioned with the rotating shaft (14) are arranged in the bearing support, the motor is fixed at the top of the bearing support, the motor is connected with the rotating shaft through a coupling (11), a flange type interface matched sealing gasket is arranged between the bottom of the bearing support and the top of the kettle body to form sealing butt joint, a through hole penetrating through the rotating shaft is arranged at the bottom of the bearing support, and a rotary sealing piece (13) is fixedly arranged at the through hole.
8. The self-pressurizing high-speed mixing kettle according to claim 1, wherein the stirring blade (8) is used for radial flow stirring, namely the direction of pushing the materials by rotation of the stirring blade is non-axial.
9. The self-pressurization high-speed mixing kettle according to claim 1, wherein an air inlet pressurization port is arranged at the top of the kettle body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210369009.4A CN114768641B (en) | 2022-04-08 | 2022-04-08 | Self-pressurizing high-speed mixing kettle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210369009.4A CN114768641B (en) | 2022-04-08 | 2022-04-08 | Self-pressurizing high-speed mixing kettle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114768641A CN114768641A (en) | 2022-07-22 |
| CN114768641B true CN114768641B (en) | 2024-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210369009.4A Active CN114768641B (en) | 2022-04-08 | 2022-04-08 | Self-pressurizing high-speed mixing kettle |
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| CN207478812U (en) * | 2017-11-23 | 2018-06-12 | 江西隆福矿业有限公司 | A kind of novel efficient stirring-type ore floatation machine |
| CN208975693U (en) * | 2018-09-26 | 2019-06-14 | 安徽国顺中药发展有限公司 | A kind of automation cryogenic high pressure homogenizer |
| CN110026147A (en) * | 2019-04-15 | 2019-07-19 | 自贡市巨光硬面材料科技有限公司 | Double shaft stirring reaction kettle |
| CN213254449U (en) * | 2020-09-15 | 2021-05-25 | 湖州绿典精化有限公司 | Production reaction kettle for heavy metal chelating agent |
-
2022
- 2022-04-08 CN CN202210369009.4A patent/CN114768641B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6394423B1 (en) * | 1997-11-19 | 2002-05-28 | Thomas Joseph Vento | Multi-stage aerator |
| CN201394440Y (en) * | 2009-02-12 | 2010-02-03 | 自贡市红旗泵业密封件制造有限公司 | Inverted liquid stirring device |
| CN102600749A (en) * | 2010-12-09 | 2012-07-25 | 中国石油化工股份有限公司 | Mixing reactor |
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| Publication number | Publication date |
|---|---|
| CN114768641A (en) | 2022-07-22 |
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