CN105435705A - Axial-flow agitating blade provided with blade tip winglets - Google Patents
Axial-flow agitating blade provided with blade tip winglets Download PDFInfo
- Publication number
- CN105435705A CN105435705A CN201511018243.9A CN201511018243A CN105435705A CN 105435705 A CN105435705 A CN 105435705A CN 201511018243 A CN201511018243 A CN 201511018243A CN 105435705 A CN105435705 A CN 105435705A
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- China
- Prior art keywords
- blade
- blade tip
- winglet
- tip winglet
- blades
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/86—Mixing heads comprising a driven stirrer
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
The invention relates to an axial-flow agitating blade provided with blade tip winglets. The axial-flow agitating blade comprises an agitating shaft and four blades connected onto the agitating shaft, wherein the blades are arranged in the circumferential direction of the agitating shaft in a quartering manner; each blade comprises a main blade and a blade tip winglet connected to the blade tip of the main blade, the main blade adopts a spiral curved surface, the blade setting angle at the blade root part is 45 degrees, the blade setting angle at the blade tip part is 19 degrees, and the blade setting angle is reduced gradually from the blade root part to the blade tip part. Compared with the prior art, the axial-flow agitating blade has the advantages that the blade tip winglets are added to the blade tips of the main blades and the contour of each blade tip winglet adopts a brachistochrone streamline structure, so that the flow state around the blades can be improved effectively, accordingly, vortex on the blade back surfaces is reduced or eliminated, the energy consumption is reduced, and a drag reduction effect can be realized critically. Swing and vibration of a shaft system are improved, agitation is performed stable, and the service life of the whole machine is prolonged. Besides, the agitating effect cannot be affected by the blade tip winglets.
Description
Technical field
The present invention relates to a kind of paddle structure, especially relate to a kind of axial flow type agitating valve with blade tip winglet, belong to fluid stirrer technical field.
Background technology
Axial flow type agitating valve is a kind of core component obtaining the mechanical stirring equipment in axial flow field, and the scope of its application is quite extensive, can be used for the fields such as chemical industry, medicine, food, mining, papermaking, coating, metallurgy, water treatment, biofermentation.Paddle produces the circulation flow field of expection to whole dischargeable capacity, reaches the mixing of materials of technological requirement, heat transfer, mass transfer and preparation emulsion, suspension etc.
Jacking-type mixing plant is made up of parts such as motor, reducing gear, shaft, paddle, base bearings, vertical installation from top to bottom.The efficient oar of the paddle Dou Shige major company exploitation that current jacking-type mixing plant uses, some device bottom limited location device, some does not have stopping means.Due to the interaction of blade and fluid media (medium) in stirring, shaft system can produce and radially wobble and vibrate.Swing and limited by spacing ring, final with vibration in the lump by reducing gear loading ability of bearing.The existence swinging and vibrate, to particularly having a strong impact on without the normal service life of the machinery of bottom limiting device.
Chinese patent CN104607089A discloses a kind of axial flow type agitating valve with stabilizer and accessory lobes, when effective solution runs up, agitating device produces vibration, form eddy current or air pocket, reduce the stirring efficiency problem of stirrer paddle, its technical scheme solved is, main blade negative camber is vertically welded with stabilizer, it is identical with main blade that a plate shape is welded in the lower end of stabilizer, the metaplasm leaf shorter than main blade, it effectively eliminates eddy current or the air pocket of vibration and the main blade generation produced when running up, and improves the operating efficiency of stirrer paddle.But it is limited arranges stabilizer in vertical direction, and at the lower end of stabilizer welding metaplasm leaf, structure is comparatively huge, takes up room large.
Summary of the invention
Object of the present invention be exactly in order to overcome above-mentioned prior art exist defect and a kind of axial flow type agitating valve with blade tip winglet is provided.
Object of the present invention can be achieved through the following technical solutions:
With an axial flow type agitating valve for blade tip winglet, comprise shaft and be connected to four blades on shaft, described blade is arranged along the circumferential quartering of shaft, and described blade is made up of primary blades and the blade tip winglet that is connected to primary blades blade tip position.
Described primary blades is spiral camber, and its root of blade blade angle is 45 °, and blade tip position blade angle is 19 °, and from root of blade to blade tip position, blade angle diminishes gradually.
Described blade tip winglet and primary blades are smoothly connected.
Working face and the back side aerofoil profile of described blade tip winglet are streamlined curved surface.
The outline line of described blade tip winglet is the brachistochrone between blade tip winglet two-end-point.
Angle between the string of a musical instrument of described blade tip winglet and primary blades blade tip plane is 53 °.
The string of a musical instrument of described blade tip winglet is the line between the longest 2 of blade tip winglet distance.
The present invention is according to hydrodynamics and aerodynamic theory, utilize the structural design of winglet in wing design theory, blade profile transformation is carried out to axial-flow mixing paddle blade, blade has the space curved surface working face of working condition requirement, overall by primary blades with blade tip winglet is streamlined combines, blade is streamed more perfect, reach the effect reducing energy consumption, reduce damping action.
From primary blades root to blade tip position, along with the increase of radius of turn, blade each position linear velocity continues to increase, and drainage capacity constantly strengthens.The outer half section of blade lifting resistance ratio of blade, interior half section large, stronger axis stream can be produced.For the continuous enhancing of blade drainage capacity from inside to outside, fluid is common by shearing force and centrifugal force, and primary blades vacuum side of blade can produce whirlpool.Therefore blade axial plane projected area suitably reduces, and is mainly used in reducing the outer half section of vacuum side of blade whirlpool of primary blades, thus reaches the effect weakening swing, reduce vibration, reduce energy loss.
Along with primary blades linear velocity increase from inside to outside, the continuous enhancing of drainage capacity, blade tip outer vacuum side of blade can produce stronger whirlpool.Whirlpool will lose a part of liquid energy, and whirlpool district local flow field will produce erosion to blade simultaneously.As contained solid particle in medium, this region blade will be denuded very soon.The generation of trailing vortex with the swing produced because of blade unbalance stress and vibration.
And the present invention adds blade tip winglet in primary blades blade tip position, and blade tip winglet profile line adopts brachistochrone streamlined structure, can reduce or eliminate the strongest whirlpool in primary blades blade tip place.Make blade uniform force, weaken or eliminate stronger swing and vibration, thus make whole equipment even running, prolonged deceleration axle box bearing service life, improve equipment dependability.In addition, weakening or eliminating of whirlpool, reduces the energy loss of fluid, improves energy efficiency of equipment.
Compared with prior art, the present invention is by adding blade tip winglet in primary blades blade tip position, and blade tip winglet profile line adopts brachistochrone streamlined structure, can effectively improve air flow over blade state, thus reduce or eliminate vacuum side of blade whirlpool, reduce energy consumption, and key plays drag-reduction effect.Improve axle system to swing and vibration, stirring is steadily carried out, improves complete machine service life.In addition, the setting of blade tip winglet can't affect mixing effect.
Accompanying drawing explanation
Fig. 1 is the axial flow type agitating valve structural representation of band blade tip winglet of the present invention;
Fig. 2 be in Fig. 1 A to structural representation.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment
A kind of axial flow type agitating valve with blade tip winglet, as shown in Figure 1 and Figure 2, comprise shaft 1 and be connected to four blades 2 on shaft 1, blade 2 is arranged along the circumferential quartering of shaft 1, and blade 2 is made up of primary blades 21 and the blade tip winglet 22 that is connected to primary blades 21 blade tip position.
Primary blades 21 is spiral camber, and its root of blade blade angle is 45 °, and blade tip position blade angle is 19 °, and from root of blade to blade tip position, blade angle diminishes gradually.Blade tip winglet 22 and primary blades 21 are smoothly connected.Working face and the back side aerofoil profile of blade tip winglet 22 are streamlined curved surface.The outline line of blade tip winglet 22 is the brachistochrone between blade tip winglet 22 two-end-point.Angle between the string of a musical instrument of blade tip winglet 22 and primary blades 21 blade tip plane is 53 °.The string of a musical instrument of blade tip winglet 22 be blade tip winglet 22 apart from the longest two between line.
The present invention is according to hydrodynamics and aerodynamic theory, utilize the structural design of winglet in wing design theory, blade profile transformation is carried out to axial-flow mixing paddle blade, blade has the space curved surface working face of working condition requirement, overall by primary blades with blade tip winglet is streamlined combines, blade is streamed more perfect, reach the effect reducing energy consumption, reduce damping action.
From primary blades root to blade tip position, along with the increase of radius of turn, blade each position linear velocity continues to increase, and drainage capacity constantly strengthens.The outer half section of blade lifting resistance ratio of blade, interior half section large, stronger axis stream can be produced.For the continuous enhancing of blade drainage capacity from inside to outside, fluid is common by shearing force and centrifugal force, and primary blades vacuum side of blade can produce whirlpool.Therefore blade axial plane projected area suitably reduces, and is mainly used in reducing the outer half section of vacuum side of blade whirlpool of primary blades, thus reaches the effect weakening swing, reduce vibration, reduce energy loss.
Along with primary blades linear velocity increase from inside to outside, the continuous enhancing of drainage capacity, blade tip outer vacuum side of blade can produce stronger whirlpool.Whirlpool will lose a part of liquid energy, and whirlpool district local flow field will produce erosion to blade simultaneously.As contained solid particle in medium, this region blade will be denuded very soon.The generation of trailing vortex with the swing produced because of blade unbalance stress and vibration.
Add blade tip winglet in primary blades blade tip position, and blade tip winglet profile line adopts brachistochrone streamlined structure, can reduce or eliminate the strongest whirlpool in primary blades blade tip place.Make blade uniform force, weaken or eliminate stronger swing and vibration, thus make whole equipment even running, prolonged deceleration axle box bearing service life, improve equipment dependability.In addition, weakening or eliminating of whirlpool, reduces the energy loss of fluid, improves energy efficiency of equipment.
Above-mentioned is can understand and use invention for ease of those skilled in the art to the description of embodiment.Person skilled in the art obviously easily can make various amendment to these embodiments, and General Principle described herein is applied in other embodiments and need not through performing creative labour.Therefore, the invention is not restricted to above-described embodiment, those skilled in the art, according to announcement of the present invention, do not depart from improvement that scope makes and amendment all should within protection scope of the present invention.
Claims (7)
1. the axial flow type agitating valve with blade tip winglet, comprise shaft (1) and be connected to four blades (2) on shaft (1), described blade (2) is arranged along the circumferential quartering of shaft (1), it is characterized in that, described blade (2) is made up of primary blades (21) and the blade tip winglet (22) that is connected to primary blades (21) blade tip position.
2. a kind of axial flow type agitating valve with blade tip winglet according to claim 1, it is characterized in that, described primary blades (21) is spiral camber, its root of blade blade angle is 45 °, blade tip position blade angle is 19 °, from root of blade to blade tip position, blade angle diminishes gradually.
3. a kind of axial flow type agitating valve with blade tip winglet according to claim 1, is characterized in that, described blade tip winglet (22) and primary blades (21) are smoothly connected.
4. a kind of axial flow type agitating valve with blade tip winglet according to claim 1, is characterized in that, working face and the back side aerofoil profile of described blade tip winglet (22) are streamlined curved surface.
5. a kind of axial flow type agitating valve with blade tip winglet according to claim 4, is characterized in that, the outline line of described blade tip winglet (22) is the brachistochrone between blade tip winglet (22) two-end-point.
6. a kind of axial flow type agitating valve with blade tip winglet according to claim 1, is characterized in that, the angle between the string of a musical instrument of described blade tip winglet (22) and primary blades (21) blade tip plane is 53 °.
7. a kind of axial flow type agitating valve with blade tip winglet according to claim 6, is characterized in that, the string of a musical instrument of described blade tip winglet (22) is the line between the longest 2 of blade tip winglet (22) distance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511018243.9A CN105435705A (en) | 2015-12-29 | 2015-12-29 | Axial-flow agitating blade provided with blade tip winglets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511018243.9A CN105435705A (en) | 2015-12-29 | 2015-12-29 | Axial-flow agitating blade provided with blade tip winglets |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105435705A true CN105435705A (en) | 2016-03-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511018243.9A Pending CN105435705A (en) | 2015-12-29 | 2015-12-29 | Axial-flow agitating blade provided with blade tip winglets |
Country Status (1)
| Country | Link |
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| CN (1) | CN105435705A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106732281A (en) * | 2016-12-29 | 2017-05-31 | 浙江德尚化工科技有限公司 | A kind of paddle |
| CN107115806A (en) * | 2017-06-15 | 2017-09-01 | 太和县美欣药业有限公司 | A kind of medicine material processing agitating device |
| CN108239597A (en) * | 2018-04-03 | 2018-07-03 | 泉州市南方食品机械有限公司 | A kind of stirrer paddle of coconut palm fruit fermentation tank |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86105781A (en) * | 1985-07-30 | 1987-01-28 | 通用信号公司 | Agitating device |
| US20050162973A1 (en) * | 2004-01-23 | 2005-07-28 | Katz Jonathan M. | Blender blade |
| CN201244456Y (en) * | 2008-08-21 | 2009-05-27 | 郑州九冶三维化工机械有限公司 | Axial flow type agitating valve with steady wing and accessory lobe |
| US20130240654A1 (en) * | 2010-09-30 | 2013-09-19 | Vita-Mix Corporation | Blender blade |
| CN205308253U (en) * | 2015-12-29 | 2016-06-15 | 米顿罗工业设备（上海）有限公司 | Take axial -flow type stirring rake of blade tip winglet |
-
2015
- 2015-12-29 CN CN201511018243.9A patent/CN105435705A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86105781A (en) * | 1985-07-30 | 1987-01-28 | 通用信号公司 | Agitating device |
| US20050162973A1 (en) * | 2004-01-23 | 2005-07-28 | Katz Jonathan M. | Blender blade |
| CN201244456Y (en) * | 2008-08-21 | 2009-05-27 | 郑州九冶三维化工机械有限公司 | Axial flow type agitating valve with steady wing and accessory lobe |
| US20130240654A1 (en) * | 2010-09-30 | 2013-09-19 | Vita-Mix Corporation | Blender blade |
| CN205308253U (en) * | 2015-12-29 | 2016-06-15 | 米顿罗工业设备（上海）有限公司 | Take axial -flow type stirring rake of blade tip winglet |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106732281A (en) * | 2016-12-29 | 2017-05-31 | 浙江德尚化工科技有限公司 | A kind of paddle |
| CN106732281B (en) * | 2016-12-29 | 2021-10-12 | 浙江德尚化工科技有限公司 | Stirring blade |
| CN107115806A (en) * | 2017-06-15 | 2017-09-01 | 太和县美欣药业有限公司 | A kind of medicine material processing agitating device |
| CN108239597A (en) * | 2018-04-03 | 2018-07-03 | 泉州市南方食品机械有限公司 | A kind of stirrer paddle of coconut palm fruit fermentation tank |
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Application publication date: 20160330 |
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| WD01 | Invention patent application deemed withdrawn after publication |