CN102974260A - Strong-shearing circulating flow paddle - Google Patents
Strong-shearing circulating flow paddle Download PDFInfo
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- CN102974260A CN102974260A CN2012104930373A CN201210493037A CN102974260A CN 102974260 A CN102974260 A CN 102974260A CN 2012104930373 A CN2012104930373 A CN 2012104930373A CN 201210493037 A CN201210493037 A CN 201210493037A CN 102974260 A CN102974260 A CN 102974260A
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- blade
- wheel hub
- strong
- shearing
- circulating flow
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- 238000010008 shearing Methods 0.000 title claims abstract description 24
- 238000005452 bending Methods 0.000 claims description 13
- 239000007788 liquid Substances 0.000 abstract description 13
- 239000012530 fluid Substances 0.000 abstract description 12
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 239000006185 dispersion Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 239000012429 reaction media Substances 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
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- Hydraulic Turbines (AREA)
Abstract
The invention relates to a strong-shearing circulating flow paddle, comprising a wheel hub and a blade mounted on the wheel hub. The strong-shearing circulating flow paddle is characterized in that an included angle alpha between a root outline projection line of the blade on the wheel hub and the middle axis of the wheel hub is 10-80 degrees. According to the strong-shearing circulating flow paddle, a blade structure and a mounting manner of the blade structure on the wheel hub are well designed, the shearing action with fluid is controlled by a blade mounting angle to adjust the flowing direction of the fluid by the blade structure, and the shearing and circulating flow power consumption is reasonably distributed, so that the liquid-liquid shearing dispersion and the high-speed circulating flow of the fluid are considered and dispersing phases of two types of immiscible liquid can be effectively sheared and dispersed into fine and small liquid drops under the effect of the paddle to provide an enough mass transfer area; meanwhile, the very high discharging flow can be generated so that a reaction medium can generate strong circulating flow; and the dispersing phases are not separated in a flowing process in a reactor and enough fluid phase flowing speed needed by heat exchange by a reaction system is provided.
Description
Technical field
Originally relate to a kind of axial circular flow blade, particularly relate to a kind of for the strong shearing circular flow blade in liquid-liquid diphase or the heterogeneous internal-circulation type stirred reactor.
Background technology
Liquid-liquid diphase or heterogeneous alkylated reaction are a kind of quick strong exothermal reactions, need the material can rapid mixing and be uniformly dispersed to satisfy the mass transfer requirement of reaction, also need simultaneously to have sufficiently high fluid-flow rate to satisfy the heat exchange demand of reaction.
Conventional blade can be divided into radial flow blade and axial flow blade by the mobile flow pattern of the discharge of its fluid.Radial flow blade power input capability is strong, take shear-mixed as the major function target; The axial flow blade is then a little less than the power input capability, and flowing with the high-speed circulating of fluid is mixed into the major function target.Classical radial flow blade is Rushton Turbine oar, and it is about 5.5 to characterize the power number of its power input capability, can not axial circulation in stirred reactor.Classical axial flow blade is the screw of various structures, and its power number can drive fluid produce the high speed axial flow about 0.3, but shear dispersibility a little less than.
Chinese patent CN2151805 discloses the aerofoil profile axial-flow mixing paddle that a kind of stirred autoclave is used, comprise a wheel hub, detachably or unremovably be installed in the blade on the wheel hub more than two or two, this blade intersects formed section with the face of cylinder arbitrary and that its wheel hub is coaxial and is airfoil type in the width range of its radial direction.From the blade tip of blade to blade root, the maximum camber of the aerofoil profile of each radius ratio, maximum blade thickness ratio, and the angle of pitch and disk ratio can be taked different values according to different mixing requirements.It is mobile that this blade causes is axial flow, has very high lift-drag ratio, can obtain larger flow under less power consumption, is applicable to the mixing between liquid-solid, gas-liquid, liquid liquid and each phase materials of gas-liquid-solid.Chinese patent CN 102179227 A disclose a kind of wing-section axial-flow type stirrer.This agitator offers a plurality of isosceles trapezoid grooves perpendicular with the center line of blade at blade, and is symmetric at blade.The advantage of above-mentioned patent is can reduce fluid to the impulsive force at back, paddle blade face, strengthen axial circulation and flow, but the more general aerofoil profile oar of the power of agitator input capability of this aerofoil profile agitator is low.
Chinese patent CN 1462710A discloses a kind of new type propeller, is made of a wheel shaft and a plurality of blade, and blade afterbody axial length extends to two to four times.Blade edge by deter line, revolve outside line, connecting line and allow four curves of waterline consist of, revolve outside line and be the circular arc line take the wheel shaft axle center as the center of circle, draw round-formed circular arc line take half of this radius of circle as radius, revolve outside line and be concave surface with the edge of the blade-section beyond the interior and above-mentioned circular arc line with radially perpendicular direction, and be 13-23 degree angle with shaft section.Chinese patent CN 202237928 U relate to a kind of blade that waits the spiral distance, and its blade is double-decker, and the surface of blade is streamlined structure, the airfoil type section, and the blade work area increases, and can increase circular flow.Above-mentioned blade, the former is for for propeller for watercraft, and shear-mixed and the dispersion of stirred reactor do not had clear superiority, and blade construction parameter complexity; Latter is not taken into account simultaneously to shear and is disperseed and the demand that circulates.
Summary of the invention
This purpose is to overcome the defective of above-mentioned prior art, and a kind of strong shear ability that has is provided, and takes into account simultaneously liquid liquid and shears the strong shearing circular flow blade that the high-speed circulating of dispersion and fluid flows.
This adopts following technical scheme to realize:
A kind of strong shearing circular flow blade comprises wheel hub and is installed in blade on the wheel hub, it is characterized in that: described blades installation on wheel hub root outline projection line and the angle α of the axis of wheel hub be 10 ° ~ 80 °.
Described blade is 3 ~ 6, is evenly distributed on the wheel hub.
Described blade is that an expansion outer rim projected outline is fan-shaped, one jiao of new blade of carrying out bending with a certain radius of curvature R of blade outer rim.
Described fan-shaped central angle β is 30 ° ~ 90 °.
Described radius of curvature R is 1/4 ~ 3/4 of described diameter of propeller blade D.
The original position L of the bending that described blade outer rim is a jiao is positioned at described blade radial 1/4 ~ 3/4 place from inside to outside.
The angle γ of the another side that run through line and described blade of the original position L of the bending that described blade outer rim is a jiao on described blade is 10 ° ~ 45 °.
Also be provided with on the described wheel hub for the blade root that blade is installed.
Described wheel hub and blade root are structure as a whole.
This is by carrying out well-designed to blade construction and the mounting means on wheel hub thereof, control the shear action of itself and fluid with the blades installation angle, adjust the flow direction of fluid with blade construction, reasonable distribution shear and circulate power consumption, thereby the high-speed circulating of having taken into account liquid liquid shearing dispersion and fluid flows, make two kinds of immiscible liquid under this blade effect, its decentralized photo can be sheared effectively is dispersed into tiny drop so that enough mass transfer areas to be provided; Simultaneously can also produce very high delivery flow, make reaction medium produce strong circulating, so that guarantee in the flow process of decentralized photo in reactor not can phase-splitting, also provide required enough liquid phase flowing velocities for the reaction system heat exchange.
Description of drawings
Fig. 1: wheel hub 2 and blade root 4 structural representations;
Fig. 2: mounted blade profile schematic diagram;
Fig. 3: bending blade structural representation;
Fig. 4: have blade root to shear by force circular flow paddle blade structure schematic diagram;
Fig. 5: shear by force circular flow paddle blade structure schematic diagram without blade root.
The specific embodiment
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, this strong shearing circular flow blade 1 its version can have two kinds, a kind ofly is comprised of wheel hub 2 and blade 3, and this form is that blade is directly installed on the wheel hub 2; Another kind is comprised of wheel hub 2, blade 3 and blade root 4, and this version Leaf 3 is to be installed on the wheel hub 2 by blade root 4.Wheel hub 2 and blade root 4 can be made of one structure.Have the connection keyway 5 that shaft is installed on the wheel hub 2.
This strong shearing circular flow blade 1 comprises three blades 3 at least, usually selects 3-6, is evenly distributed on the wheel hub.
This Leaf 3 is installed on root outline projection line on the described wheel hub 2 and the axis angle α of described wheel hub 2 is 10 ° ~ 80 °.
Described blade 3 is that an expansion outer rim projected outline is fan-shaped, one jiao of new blade of carrying out bending with a certain radius of curvature R of blade outer rim.Wherein fan-shaped central angle β is 30 ° ~ 90 °.
The warp architecture of described blade 3 is determined by the angle γ that original position parameter L, bending curvature radius R and the bending of original position parameter L on blade run through line and blade another side.
Described bending blade structure original position parameter L value is 1/4 ~ 3/4 of blade radial length.
The value of described bending blade radius of curvature R is 1/4 ~ 3/4 of described diameter of propeller blade D.
The value that the bending of described blade runs through the angle γ of line A and blade another side is 10 ° ~ 45 °
The advantage of this strong shearing circular flow blade is that its power number is 0.45 ~ 3.5, and the circular flow number is 0.40 ~ 0.93.Described blade both can have higher power input capability, satisfied the energy requirement of the shearing dispersion of the liquid phase of not dissolving each other, and guaranteed effective mass transfer rate; Simultaneously can produce very high delivery flow again, make the interior medium of reactor have high flowing velocity to prevent the decentralized photo sedimentation and effectively to improve heat transfer efficiency.
Claims (9)
1. shear the circular flow blade for one kind strong, comprise wheel hub (2) and be installed in blade (3) on the wheel hub (2), it is characterized in that: the angle α that described blade (3) is installed on the axis of root outline projection line on the wheel hub (2) and wheel hub (2) is 10 ° ~ 80 °.
2. according to strong shearing circular flow blade claimed in claim 1, it is characterized in that: described blade (3) is 3 ~ 6, is evenly distributed on the wheel hub (2).
3. according to claim 1 or 2 described strong shearing circular flow blades, it is characterized in that: described blade (3) is that an expansion outer rim projected outline is fan-shaped, one jiao of new blade of carrying out bending with a certain radius of curvature R of blade outer rim.
4. according to strong shearing circular flow blade claimed in claim 3, it is characterized in that: described fan-shaped central angle β is 30 ° ~ 90 °.
5. according to strong shearing circular flow blade claimed in claim 3, it is characterized in that: described radius of curvature R is 1/4 ~ 3/4 of described blade (1) diameter D.
6. according to strong shearing circular flow blade claimed in claim 3, it is characterized in that: the original position L of the bending that described blade (3) outer rim is a jiao is positioned at radially from inside to outside 1/4 ~ 3/4 place of described blade (3).
7. according to strong shearing circular flow blade claimed in claim 6, it is characterized in that: the angle γ of the another side that run through line and described blade (3) of the original position L of the bending that described blade (3) outer rim is a jiao on described blade (3) is 10 ° ~ 45 °.
8. according to strong shearing circular flow blade claimed in claim 1, it is characterized in that: also be provided with on the described wheel hub (2) for the blade root (4) that blade (3) is installed.
9. according to strong shearing circular flow blade claimed in claim 8, it is characterized in that: described wheel hub (2) and blade root (4) are structure as a whole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210493037.3A CN102974260B (en) | 2012-11-28 | 2012-11-28 | A kind of Strong shear circular flow blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210493037.3A CN102974260B (en) | 2012-11-28 | 2012-11-28 | A kind of Strong shear circular flow blade |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102974260A true CN102974260A (en) | 2013-03-20 |
| CN102974260B CN102974260B (en) | 2015-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210493037.3A Active CN102974260B (en) | 2012-11-28 | 2012-11-28 | A kind of Strong shear circular flow blade |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108126554A (en) * | 2018-02-01 | 2018-06-08 | 海斯特(青岛)泵业有限公司 | A kind of axial-flow type Anti-twisting mixer impeller |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5297938A (en) * | 1990-03-26 | 1994-03-29 | Philadelphia Mixers Corporation | Hydrofoil impeller |
| US6082890A (en) * | 1999-03-24 | 2000-07-04 | Pfaudler, Inc. | High axial flow glass coated impeller |
| JP2003144886A (en) * | 2001-08-27 | 2003-05-20 | Takeuchi Seisakusho:Kk | Impeller for agitation |
| CN203208993U (en) * | 2012-11-28 | 2013-09-25 | 宁夏宝塔石化集团有限公司 | Strong-shear circulation flow paddle |
-
2012
- 2012-11-28 CN CN201210493037.3A patent/CN102974260B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5297938A (en) * | 1990-03-26 | 1994-03-29 | Philadelphia Mixers Corporation | Hydrofoil impeller |
| US6082890A (en) * | 1999-03-24 | 2000-07-04 | Pfaudler, Inc. | High axial flow glass coated impeller |
| JP2003144886A (en) * | 2001-08-27 | 2003-05-20 | Takeuchi Seisakusho:Kk | Impeller for agitation |
| CN203208993U (en) * | 2012-11-28 | 2013-09-25 | 宁夏宝塔石化集团有限公司 | Strong-shear circulation flow paddle |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108126554A (en) * | 2018-02-01 | 2018-06-08 | 海斯特(青岛)泵业有限公司 | A kind of axial-flow type Anti-twisting mixer impeller |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102974260B (en) | 2015-09-02 |
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