CN114259895A - Mixed-flow type blade and design method thereof - Google Patents
Mixed-flow type blade and design method thereof Download PDFInfo
- Publication number
- CN114259895A CN114259895A CN202111198516.8A CN202111198516A CN114259895A CN 114259895 A CN114259895 A CN 114259895A CN 202111198516 A CN202111198516 A CN 202111198516A CN 114259895 A CN114259895 A CN 114259895A
- Authority
- CN
- China
- Prior art keywords
- blade
- total height
- edge
- paddle
- flow type
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000009434 installation Methods 0.000 claims abstract description 7
- 230000006978 adaptation Effects 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 abstract description 29
- 238000003756 stirring Methods 0.000 abstract description 15
- 239000012530 fluid Substances 0.000 abstract description 9
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000013019 agitation Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Landscapes
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
The invention relates to a blade, in particular to a mixed flow type blade and a design method thereof. The blade root flange is internally provided with an installation adjusting end capable of improving the adaptation range, the bottom of the blade root flange is provided with a blade extending downwards, the placement angle beta of the blade is 15-24 degrees, and the sweep angle gamma of the blade is 5-11 degrees. The comprehensive efficiency of mixing, circulating or stirring materials is improved by the action of mixed hydraulic force of multiple fluids of circumferential flow, radial flow and axial flow; the hydraulic performance is optimized to reduce the operation energy consumption to the maximum extent.
Description
Technical Field
The invention relates to a blade, in particular to a mixed flow type blade and a design method thereof.
Background
At present, the following technologies are mainly adopted for fluid mixing or stirring blade parts of materials in the industries of medicine, food, paper making and the like:
one is that the turbine type paddle is adopted, the axial thrust to the material is small, and the radial stirring is large, so that the axial thrust to the material is small, the stirring effect is good, but the circulating effect is not ideal, namely the material is easy to settle or flocculate; the hydraulic efficiency is very low, and the operation energy consumption is higher; secondly, the propelling type blades are adopted, the axial thrust to the materials is large, the radial stirring is small, so that the radial stirring to the materials is small, the axial propelling or circulating effect is good, and the mixing effect to the materials is not ideal; but the efficiency is higher and the operation energy consumption is lower.
Disclosure of Invention
The invention mainly solves the defects in the prior art, and provides a device which can improve the comprehensive efficiency of mixing, circulating or stirring materials by the action of mixing water force of a plurality of fluids of circumferential flow, radial flow and axial flow; the mixed flow type blade and the design method thereof optimize the hydraulic performance and reduce the operation energy consumption to the maximum extent.
The technical problem of the invention is mainly solved by the following technical scheme:
the mixed flow type blade comprises a blade root flange, wherein an installation adjusting end capable of improving the adaptation range is arranged in the blade root flange, a blade extending downwards is arranged at the bottom of the blade root flange, the placement angle beta of the blade is 15-24 degrees, and the blade sweep angle gamma of the blade is 5-11 degrees.
Preferably, one end of the front surface of the blade is a flow inlet surface, the front surface of the blade is a working profile of the blade, the other end of the front surface of the blade is an outflow edge, and the bottom of the blade is a top edge; the back surface of the paddle is a back profile; the paddle is arc-shaped.
Preferably, the installation adjusting end comprises a centering cylindrical pin arranged at the center end of the blade root flange, the edge of the blade root flange is provided with a plurality of positioning pin holes which are distributed in a connected mode, and two ends of each positioning pin hole are respectively provided with a pair of waist-shaped bolt holes which are distributed symmetrically.
Preferably, the side wall of the blade root flange is provided with a reference scale mark which is distributed corresponding to the inflow surface, and the reference scale mark corresponds to one group of kidney-shaped bolt holes; the lateral wall of blade root portion flange be equipped with working angle scale mark and the limit of effluenting be and correspond the distribution, working angle scale mark and another group waist shape bolt hole correspond.
Preferably, the working angle of the blade is 2.5-23 degrees, and the blade root flange is a blade root circular flange.
A design method of mixed flow type blade, the said blade is for the radial streamline and axial streamline mixed type distortion structure;
the total height H of the paddle is determined according to the size of the tank, and is 5/61-8/71 of the length or the diameter of the tank;
the geometrical relationships between a1, a2 and A3, B1, B2 and B3, T1, T2 and T3, R, R1, R2 and R3 and the overall blade height H are as follows, respectively: the maximum section width A1 in the narrow direction is 5/16-1/3 of the total height H of the blade, A2 is 3/10-4/13 of the total height H of the blade, and A3 is 4/17-1/4 of the total height H of the blade; the maximum width direction cross section eccentric width B0 is 5/12-4/9 of the total height H of the blade, B1 is 5/13-2/5 of the total height H of the blade, B2 is 5/8-2/3 of the total height H of the blade, and B3 is 2/3-11/16 of the total height H of the blade; the thickness T1 on the section 13 of the central core is 1/13-2/25 of the total height H of the blade, T2 is 1/24-1/23 of the total height H of the blade, and T3 is 3/100-1/32 of the total height H of the blade;
the edge thickness of the inflow edge and the outflow edge is 3-6 mm, the edge thickness of the top edge close to the section of the central core is 5-10 mm, and the top edge are both semicircular edges so as to improve the overcurrent performance; the curvature radius R on the section of the central core is 18/5-11/3 of the total height H of the blade; the curvature radius R1 on the outflow edge is 1-10/9 of the total height H of the blade; the radius R2 of curvature of the middle lower part of the inflow edge is 5/11-8/17 of the total height H of the blade; the curvature radius R3 on the top edge is 9/23-2/5 of the total height H of the blade.
Preferably, the rotating speed of the blades is 190-320 r/min.
Beta is a blade mounting angle and mainly plays a role in axial propulsion; gamma is the sweepback angle of the paddle, mainly plays a role in radial stirring and self-cleaning, and plays a role in circumferential flow locally. H is the total height of the blade, wherein H/4 represents one fourth of the total height of the blade; a1, A2 and A3 are respectively the maximum section width of the narrow direction under the height of H/4; due to the diversity of a material mixing system and the complexity of rheological properties of materials, an advanced testing means and a computational fluid mechanics technology are adopted to obtain a flow field, a velocity field, a concentration field and the like of fluid, and the optimization of mixing, circulation or stirring is of great practical significance, therefore, two sides of a central core part adopt asymmetric design to destroy the periodicity of a fluid system, the mixing, circulation or stirring efficiency can be greatly improved, B0 is the maximum cross-sectional eccentric width in the width direction between the central core part and a flow inlet edge, and B1, B2 and B3 are the maximum cross-sectional widths in the width direction under the height of H/4, respectively; t1, T2 and T3 are the thicknesses of the section of the central core under the H/4 height respectively; r is the radius of curvature on the cross section of the core, R1 is the radius of curvature on the outflow side, R2 is the radius of curvature of the middle and lower part on the inflow side, and R3 is the radius of curvature on the top edge.
The inflow edge mainly plays a role of guiding and sucking materials, so that the materials are stably sucked; the working profile mainly mixes the sucked materials with the water force of a plurality of fluids of circumferential flow, radial flow and axial flow, so that the effect of 'promoting wave' is achieved, the comprehensive efficiency of mixing, circulating or stirring of the materials is improved, and meanwhile, the hydraulic performance is optimized so as to reduce the operation energy consumption of the materials to the maximum extent; the top edge mainly plays a role of high-speed circumferential flow, so that the material flows circumferentially around; the outflow edge mainly and uniformly discharges various mixed fluids so as to mix, circulate and stir nearby materials; each positioning pin hole in the circular flange at the blade root part is used for positioning and locking the working angle of the blade and transmitting power, and different working angles of the blade can be set according to different process requirements of material types, mixing, circulation or stirring tasks, time and the like, the range of the working angles is 2.5-23 degrees, namely the working range is very wide; the centering cylindrical pin 7 is used for positioning and locking the center of the circular flange at the blade root part, and is convenient to process, assemble and adjust the working angle of the mixed flow type blade to rotate; each kidney-shaped bolt hole in the blade root flange is used for meeting the rotating and penetrating bolts with different blade working angles; the reference scale marks on the excircle of the circular flange at the root of the blade are mainly used as an alignment reference during processing or assembling so as to improve the processing or mounting precision; the working angle scale marks on the excircle of the blade root circular flange are provided with scale marks and degree numerical values and are used for displaying or verifying the actual degree of the working angle of the blade; the back profile mainly carries out high-efficient backward flow to the mixed flow that produces on the working profile, makes material mixing, circulation or stirring more smooth and easy, also plays the effect of "following the wave and flowing gradually".
The working principle is as follows: the mixed flow type paddle enters materials from the inflow edge under certain power and rotation speed, the materials flow circularly, radially and axially through the working profile, the radial flow materials discharged from the top edge carry surrounding materials (including static and flowing) to flow circularly, and the axial materials discharged from the axial part of the outflow edge perform axial propelling movement, so that the function of 'propelling waves and assisting waves' is achieved, the mixed materials have strong convection circulation and strong turbulence diffusion, a mixed flow type which is good in front, back, left, right, up and down is formed, and the materials are mixed, circulated or stirred repeatedly; the back profile mainly carries out high-efficiency backflow on mixed flow generated on the working profile, so that materials are mixed, circulated or stirred more smoothly, and the effect of wave-following flow-by-flow is also achieved; higher mixing, circulation or agitation efficiency is achieved with less power consumption.
Compared with the prior art, the invention has the advantages and effects that:
the mixing, circulating or stirring comprehensive action on the materials is strong through the action of mixing water force of various fluids of annular flow, radial flow and axial flow.
The mixed flow type structure has high hydraulic efficiency and reduces the operation energy consumption.
The rotating speed is high, the size and the weight of the paddle are reduced, and the operation reliability is improved.
Drawings
FIG. 1 is a schematic front perspective view of the present invention;
FIG. 2 is a schematic top view of the structure of FIG. 1;
FIG. 3 is a schematic rear perspective view of the present invention;
FIG. 4 is a schematic bottom view of the present invention;
FIG. 5 is a schematic side view of the present invention;
FIG. 6 is a schematic view of a central cross-sectional configuration of the present invention;
fig. 7 is a schematic view of another central cross-sectional configuration of the present invention.
Reference numerals: and 13 is a section of the central core.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
Example 1: as shown in the figure, the mixed-flow type blade comprises a blade root flange 1, wherein an installation adjusting end capable of improving the adaptation range is arranged in the blade root flange 1, a blade 2 extending downwards is arranged at the bottom of the blade root flange 1, the placement angle beta of the blade 2 is 15-24 degrees, and the blade sweep angle gamma of the blade 2 is 5-11 degrees.
One end of the front surface of the blade 2 is provided with a flow inlet surface 3, a working profile 4 of the blade 2 is communicated with the flow inlet surface 3, the other end of the front surface of the blade 2 is provided with an outflow edge 5, and the bottom of the blade 2 is provided with a top edge 6; the back surface of the paddle 2 is a back profile 7; the paddle 2 is arc-shaped.
The installation and adjustment end comprises a centering cylindrical pin 8 arranged at the center end of the blade root flange 1, a plurality of positioning pin holes 9 which are connected and distributed are formed in the edge of the blade root flange 1, and a pair of waist-shaped bolt holes 10 which are symmetrically distributed are formed in two ends of each positioning pin hole 9.
The side wall of the blade root flange 1 is provided with a reference scale mark 11, the reference scale mark 11 is distributed corresponding to the inflow surface 3, and the reference scale mark 11 corresponds to one group of kidney-shaped bolt holes 10; the side wall of blade root flange 1 be equipped with working angle scale mark 12 and the limit 5 that outflows is corresponding to distribute, working angle scale mark 12 correspond with another group waist shape bolt hole 10.
The working angle of the blade 2 is 2.5-23 degrees, and the blade root flange 1 is a blade root circular flange.
A design method of mixed flow type blade, the said blade is for the radial streamline and axial streamline mixed type distortion structure;
the total height H of the paddle is determined according to the size of the tank, and is 5/61-8/71 of the length or the diameter of the tank;
the geometrical relationships between a1, a2 and A3, B1, B2 and B3, T1, T2 and T3, R, R1, R2 and R3 and the overall blade height H are as follows, respectively: the maximum section width A1 in the narrow direction is 5/16-1/3 of the total height H of the blade, A2 is 3/10-4/13 of the total height H of the blade, and A3 is 4/17-1/4 of the total height H of the blade; the maximum width direction cross section eccentric width B0 is 5/12-4/9 of the total height H of the blade, B1 is 5/13-2/5 of the total height H of the blade, B2 is 5/8-2/3 of the total height H of the blade, and B3 is 2/3-11/16 of the total height H of the blade; the thickness T1 on the section 13 of the central core is 1/13-2/25 of the total height H of the blade, T2 is 1/24-1/23 of the total height H of the blade, and T3 is 3/100-1/32 of the total height H of the blade;
the edge thickness of the inflow edge and the outflow edge is 3-6 mm, the edge thickness of the top edge close to the section of the central core is 5-10 mm, and the top edge are both semicircular edges so as to improve the overcurrent performance; the curvature radius R on the section of the central core is 18/5-11/3 of the total height H of the blade; the curvature radius R1 on the outflow edge is 1-10/9 of the total height H of the blade; the radius R2 of curvature of the middle lower part of the inflow edge is 5/11-8/17 of the total height H of the blade; the curvature radius R3 on the top edge is 9/23-2/5 of the total height H of the blade.
7. A method of designing a mixed flow type blade as claimed in claim 1 or 2, wherein: the rotating speed of the paddle is 190-320 r/min.
Claims (7)
1. A mixed flow type blade is characterized in that: the blade root flange structure comprises a blade root flange (1), wherein an installation adjusting end capable of improving the adaptation range is arranged in the blade root flange (1), a blade (2) extending downwards is arranged at the bottom of the blade root flange (1), the placement angle beta of the blade (2) is 15-24 degrees, and the blade sweep angle gamma of the blade (2) is 5-11 degrees.
2. A mixed flow type blade as claimed in claim 1, wherein: one end of the front surface of the paddle (2) is provided with a flow inlet surface (3), the other end of the front surface of the paddle (2) is provided with an outflow edge (5), and the bottom of the paddle (2) is provided with a top edge (6); the back surface of the paddle (2) is a back profile (7); the paddle (2) is arc-shaped.
3. A mixed flow type blade as claimed in claim 1 or 2, wherein: the installation adjusting end comprises a centering cylindrical pin (8) arranged at the center end of the blade root flange (1), a plurality of positioning pin holes (9) which are connected and distributed are formed in the edge of the blade root flange (1), and a pair of waist-shaped bolt holes (10) which are symmetrically distributed are formed in two ends of each positioning pin hole (9).
4. A mixed flow type blade as claimed in claim 3, wherein: the side wall of the blade root flange (1) is provided with reference scale marks (11), the reference scale marks (11) are distributed corresponding to the inflow surface (3), and the reference scale marks (11) correspond to one group of kidney-shaped bolt holes (10); the side wall of blade root portion flange (1) be equipped with working angle scale mark (12) and flow limit (5) and be corresponding the distribution, working angle scale mark (12) correspond with another group waist shape bolt hole (10).
5. A mixed flow type blade as claimed in claim 1 or 2, wherein: the working angle of the paddle (2) is 2.5-23 degrees, and the blade root flange (1) is a blade root circular flange.
6. A method of designing a mixed flow type blade as claimed in claim 1 or 2, wherein: the blades are of a radial streamline and axial streamline mixed type twisted structure;
the total height H of the paddle is determined according to the size of the tank, and is 5/61-8/71 of the length or the diameter of the tank;
the geometrical relationships between a1, a2 and A3, B1, B2 and B3, T1, T2 and T3, R, R1, R2 and R3 and the overall blade height H are as follows, respectively: the maximum section width A1 in the narrow direction is 5/16-1/3 of the total height H of the blade, A2 is 3/10-4/13 of the total height H of the blade, and A3 is 4/17-1/4 of the total height H of the blade; the maximum width direction cross section eccentric width B0 is 5/12-4/9 of the total height H of the blade, B1 is 5/13-2/5 of the total height H of the blade, B2 is 5/8-2/3 of the total height H of the blade, and B3 is 2/3-11/16 of the total height H of the blade; the thickness T1 on the section 13 of the central core is 1/13-2/25 of the total height H of the blade, T2 is 1/24-1/23 of the total height H of the blade, and T3 is 3/100-1/32 of the total height H of the blade;
the edge thickness of the inflow edge and the outflow edge is 3-6 mm, the edge thickness of the top edge close to the section of the central core is 5-10 mm, and the top edge are both semicircular edges so as to improve the overcurrent performance; the curvature radius R on the section of the central core is 18/5-11/3 of the total height H of the blade; the curvature radius R1 on the outflow edge is 1-10/9 of the total height H of the blade; the radius R2 of curvature of the middle lower part of the inflow edge is 5/11-8/17 of the total height H of the blade; the curvature radius R3 on the top edge is 9/23-2/5 of the total height H of the blade.
7. A method of designing a mixed flow type blade as claimed in claim 1 or 2, wherein: the rotating speed of the paddle is 190-320 r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111198516.8A CN114259895A (en) | 2021-10-14 | 2021-10-14 | Mixed-flow type blade and design method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111198516.8A CN114259895A (en) | 2021-10-14 | 2021-10-14 | Mixed-flow type blade and design method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114259895A true CN114259895A (en) | 2022-04-01 |
Family
ID=80824841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111198516.8A Pending CN114259895A (en) | 2021-10-14 | 2021-10-14 | Mixed-flow type blade and design method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114259895A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201704580U (en) * | 2010-06-01 | 2011-01-12 | 杭州萧山美特轻工机械有限公司 | Turbulent-flow type paddle |
| WO2011115552A1 (en) * | 2010-03-17 | 2011-09-22 | Itt Manufacturing Enterprises Inc | Propeller assembly comprising one hub and at least two blades |
| CN110199131A (en) * | 2016-12-19 | 2019-09-03 | 赛莱默欧洲有限公司 | Mixer including gripper sleeve component |
| US20200368700A1 (en) * | 2018-01-05 | 2020-11-26 | Sabic Sk Nexlene Company Pte. Ltd. | Mixing System |
-
2021
- 2021-10-14 CN CN202111198516.8A patent/CN114259895A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011115552A1 (en) * | 2010-03-17 | 2011-09-22 | Itt Manufacturing Enterprises Inc | Propeller assembly comprising one hub and at least two blades |
| CN201704580U (en) * | 2010-06-01 | 2011-01-12 | 杭州萧山美特轻工机械有限公司 | Turbulent-flow type paddle |
| CN110199131A (en) * | 2016-12-19 | 2019-09-03 | 赛莱默欧洲有限公司 | Mixer including gripper sleeve component |
| US20200368700A1 (en) * | 2018-01-05 | 2020-11-26 | Sabic Sk Nexlene Company Pte. Ltd. | Mixing System |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4468130A (en) | Mixing apparatus | |
| CN201231143Y (en) | Efficient stirring blade | |
| CN106422845B (en) | Cover plate type six-straight-blade disc turbine stirring paddle | |
| CN216171480U (en) | Mixed flow type paddle | |
| CN101709706A (en) | Guide vane adjustable axial flow pump | |
| CN114259895A (en) | Mixed-flow type blade and design method thereof | |
| CN102302906B (en) | Novel static and dynamic combined high-efficiency liquid-liquid mixing device | |
| CN106640742B (en) | Spiral axial-flow type oil-gas mixed transportation pump impeller | |
| CN210410449U (en) | Combined dismounting type hyperboloid stirring impeller | |
| CN203075950U (en) | Novel arc stirring paddle for glass lining | |
| CN110141984B (en) | Novel car paint stirring rake | |
| CN108126554A (en) | A kind of axial-flow type Anti-twisting mixer impeller | |
| CN104047890A (en) | Design method of axial flow type low-lift prepositioned inducer | |
| US10609910B2 (en) | Contra-rotating multi-layer propeller unit for multi-phase flow | |
| CN103307008A (en) | Design method for inducer with long and short blades of nuclear main pump | |
| CN211358421U (en) | Multi-blade stirrer | |
| CN209875546U (en) | Energy-saving centrifugal impeller | |
| CN112791629A (en) | Vertical double-curve stirring impeller and stirrer thereof | |
| CN208512366U (en) | A kind of stainless steel shaft flow type stirrer | |
| CN220633817U (en) | Four-blade stirrer | |
| CN102510773A (en) | Axially operating stirring element, preferably a propeller manufactured from sheet metal | |
| CN202161958U (en) | T-shaped open turbine stirrer | |
| CN218250169U (en) | Special-shaped stirring paddle suitable for large-size reactor | |
| CN112325159A (en) | Suspension conveying device for industrial production | |
| CN205495499U (en) | Paddle crescent open -ended agitator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220401 |