CN206715839U - A kind of agitating device based on the compound cavitation of multiple spot - Google Patents
A kind of agitating device based on the compound cavitation of multiple spot Download PDFInfo
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- CN206715839U CN206715839U CN201720359950.2U CN201720359950U CN206715839U CN 206715839 U CN206715839 U CN 206715839U CN 201720359950 U CN201720359950 U CN 201720359950U CN 206715839 U CN206715839 U CN 206715839U
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- Prior art keywords
- cavitation
- multiple spot
- agitating device
- device based
- drive shaft
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Abstract
The utility model discloses a kind of agitating device based on the compound cavitation of multiple spot, the anti-airfoil fan of porous type connected including a drive shaft as corresponding to motor, with a ultrasonic transducer connected on the bearing of drive shaft, the anti-airfoil fan of porous type is arranged on the end both sides of vertical drive shaft, ultrasonic transducer connects a ultrasonic generator by output line, stirring vane receives the ultrasonic signal of ultrasonic transducer transmitting, realizes the whipping process of the compound cavitation of multiple spot.The device forms compound cavitation mode by said structure, effectively reduces the condition that cavitation occurs for square one lower blade rear end, improves cavitation intensity, so as to improve mixing effect and efficiency, reaches the purpose for reducing energy consumption.
Description
Technical field
A kind of agitating device based on the compound cavitation of multiple spot is the utility model is related to, it is especially a kind of to be used for more liquid or molten
The mixed uniformly impeller stirring device of liquid.
Background technology
Either in the industrial processes in the fields such as the energy, chemical industry, environment, civil engineering, or in daily life
In, it is often necessary to the mixture of liquid and solid particle or plurality of liquid is stirred using impeller unit.Due to by dynamic
Power, the strength of materials and the limitation of application scenario, the rotating speed of impeller and size all can not infinitely increase under all kinds of occasions, and this is just limited
The stirring capacity and stirring efficiency of impeller unit, it may appear that material is by for a long time stirring the feelings not being well mixed still
Condition.In order to further improve the stirring capacity of impeller under limited conditions, it is necessary to so that during impeller operation the flowing of material mix
It is mixed stronger.
The blending degree of flowing can be effectively improved using cavitation phenomenon.In a fluid, due to the geometrical boundary of runner,
The influence of the physical condition such as the inhomogeneities of flowing itself and extraneous additional ultrasonic wave, some positions of internal fluid can be formed
Low pressure point, when pressure is reduced to a certain extent, the fluid at this can be undergone phase transition, and produce bubble, that is, cavitation phenomenon occurs.Work as sky
When changing bubble and flowing paramount nip with liquid, rupture cenotype of laying equal stress on is changed into liquid by the bubble.Due to the generation of cavitation bubble, fortune
Dynamic and rupture can convection current movable property give birth to uneven, unstable interference, therefore fairly large cavitation phenomenon can significantly improve stream
Dynamic blending state.By improving agitating device, induce and strengthen the esoteric cavitation of stream, mixing effect can be effectively improved.
The agitating device for improving mixing effect currently with cavitation phenomenon is typically to be carried out using ultrasonic cavitation.It is such as public
Number Chinese utility model patent for being CN203400670U is accused, discloses " the rotative combined big blade stirring at low speed of one kind vibration
Device ", the agitator mainly promotes the generation of cavitation by the ultrasonic transducer installed additional in blade shaft end, but which does not have
Cavitation induction is carried out for the low pressure point for being easiest to occur cavitation in flow field, therefore promotes the effect of cavitation limited, only when super
The generation of cavitation can be just obviously promoted when sound intensity is very big, this not only significantly increases the energy consumption of device, and high intensity is super
Sound also causes vibration during plant running significantly to strengthen.Therefore, the stirring efficiency of impeller unit under the same terms is improved.At present
In some agitating devices, almost promote cavitation not over the mode for improving blade construction, improve the example of stirring efficiency.
Utility model content
Stirring efficiency is low, effect is poor in order to overcome in existing impeller stirring device, and installs energy consumption after ultrasonic transducer additional
Dramatically increase, device vibration strengthen the problem of, the utility model is improved structure of the impeller with blade in itself, using more
The mode of the compound cavitation of point, improve the working effect of blade.The utility model embodiment provides one kind and is based on multiple spot compound air
The agitating device of change.
Technical scheme is used by the utility model solves its technical problem：
A kind of agitating device based on the compound cavitation of multiple spot, including one as corresponding to motor drive shaft connect it is more
The anti-airfoil fan of cellular type, and a ultrasonic transducer connected on the bearing of drive shaft, the anti-airfoil fan of porous type
Installed in the end both sides of vertical drive shaft, ultrasonic transducer connects a ultrasonic generator, stirring by output line
Blade receives the ultrasonic signal of ultrasonic transducer transmitting, realizes the whipping process of the compound cavitation of multiple spot.
Preferably, the ultrasonic transducers locations being arranged on by bearing on drive shaft are higher than the anti-airfoil fan of porous type
Installation site.
Preferably, the ultrasonic transducer is one group multiple, along drive shaft bearing angularly circumferentially, connect jointly
By the signal of same ultrasonic generator.
Preferably, it is in radially the thin semicircular arc structure in side thickness side that the anti-airfoil fan of the porous type, which is,
One end of semi arch is provided with the groove being connected with drive shaft, and the other end of semi arch is blade elongated end；The thickness of semi arch
Side is cambered surface, and thin side is section.
Further, along being provided with several penetrating blade concave surfaces and blade convex surface on the inside of anti-airfoil fan semi arch section end
Aperture.
Further, several apertures are uniform along section inside edge, close to vane groove end and the aperture of blade elongated end
The small aperture at aperture ratio center is slightly smaller.
Further, the aperture is elliposoidal hole, and the long axis ray direction in elliposoidal hole is along anti-airfoil fan thickness direction
It is distributed, the aperture at forward face is more than the aperture at convex surface.
Further, the concave upright direction installation of the anti-airfoil fan of the porous type, and the anti-airfoil fan edge of porous type passes
The inclined angle of turn axle is set, and the angle of attack is negative value.
The beneficial effects of the utility model are, the utility model by the improvement to agitating device geometry and principle,
The compound cavitation mode combined using Hydrodynamic cavitation, ultrasonic cavitation, tip vortex cavitation, hydrofoil cavitation, reduces blade rear end
Condition required for cavitation, and the intensity of cavitation generation is improved, and then enhance the effect of stirring.With being run with same rotational speed
The agitating device of identical size compare, the utility model device stirring efficiency is higher, thus reaches required during same target
Energy consumption of electrical machinery is lower, while required ultrasonic power is also lower, so as to also reduce the energy consumption of ultrasonic generator.The opposing party
Face, due to the utility model so that the cavitation in stirring is easier to occur, therefore the stirring dress to certain size and speed conditions
Put, the utility model improves maximum cavitation intensity caused by its energy, therefore improves maximum mixing effect.Needing high stirring
The occasion of effect, requirement can be reached using smaller device.
Brief description of the drawings
Fig. 1 is the utility model overall structure diagram；
Fig. 2 is the top view of the anti-airfoil fan of porous type in the utility model；
Fig. 3 is overall schematic of the anti-airfoil fan of porous type along line A-A in Fig. 2 in the utility model；
Fig. 4 is the pressure distribution on anti-airfoil fan surface；
Fig. 5 is the positive airfoil fan overall schematic for Contrast on effect；
Fig. 6 is the pressure distribution on positive airfoil fan surface；
Fig. 7 is the plate blade overall schematic for Contrast on effect；
Fig. 8 is the pressure distribution on plate blade surface.
In figure：1st, the anti-airfoil fan of porous type；2nd, drive shaft；3rd, motor；4th, ultrasonic generator；5th, signal output
Line；6th, bearing；7th, ultrasonic transducer；8th, forward face (carrying out stream interface)；9th, section；10th, aperture；11st, blade elongated end；12nd, it is recessed
Groove；13rd, blade convex surface (lee side)；14th, cambered surface.
Embodiment
The utility model is described in detail with reference to the accompanying drawings and detailed description.
As shown in figure 1, a kind of agitating device based on the compound cavitation of multiple spot, including a transmission corresponding to motor 3
The anti-airfoil fan 1 of porous type that rotating shaft 2 connects, and a ultrasonic transducer 7 connected on the bearing 6 of drive shaft 2, its
In, the anti-airfoil fan 1 of porous type is arranged on the end both sides of vertical drive shaft 2, the rotating shaft of drive shaft 2 and motor 3
It is connected, power is provided by motor 3；Ultrasonic transducer 7 connects a ultrasonic generator 4, ultrasonic generator by output line 5
4 be the energy source that ultrasonic transducer 7 provides transmitting ultrasound；Ultrasonic transducer 7 is arranged on drive shaft 2 by bearing 6, slightly higher
In the installation site of the anti-airfoil fan 1 of porous type.Stirring vane receives the ultrasonic signal that ultrasonic transducer 7 is launched, and realizes more
The whipping process of the compound cavitation of point.
The utility model employs the design of the anti-aerofoil profile stirring vane of porous type and the arrangement of ultrasonic transducer.For
For the blade of general agitator, its rear end deviates from fluid motion, and pressure is relatively low, therefore is easiest to that cavitation occurs at this.But one
As agitator not operatively the cavitation at this is strengthened, in order to improve cavitation situation herein, stirred in the utility model
Mix blade and pass through particular design, be the anti-airfoil fan of porous type, and ultrasonic transducer is set, ultrasonic wave is launched into fluid, lead to
Cross machinery with ultrasonic mixing effect mode, make blade rear end fluid simultaneously by Hydrodynamic cavitation, ultrasonic cavitation, tip vortex cavitation,
The compound influence of hydrofoil cavitation, effectively to strengthen the cavitation effect in fluid, improve the stirring efficiency of device.
As shown in Fig. 2 the blade is in totally anti-Airfoil Design, blade is radially in the thin semi arch in side thickness side
Shape structure, the groove 12 being connected with drive shaft 2 is provided with one end of semi arch, the other end of semi arch is blade elongated end
11；The thick side of semi arch is cambered surface 14, and thin side is section 9；Passed through on the inside of along the anti-end of airfoil fan semi arch section 9 provided with several
Wear forward face 8 and row's aperture 10 on blade convex surface 13；Several apertures 10 are uniform along section 9.Aperture is elliposoidal hole,
The long axis ray direction in elliposoidal hole is distributed along anti-airfoil fan thickness direction, and the aperture at forward face 8 is more than at convex surface 13
Aperture.
The effect of aperture 10 is, when fluid flows through aperture 10, because runner is very narrow, fluid local pressure significantly drops
Low and theoretical according to vaporization, the cavitation that on the one hand may be used as relatively stablizing with cambered elliposoidal aperture produces cave, reduces
The formation condition of cavitation bubble herein, the Fluid pressure on the other hand passed through herein reduce, it is easier to induce cavitation, and compare
The bigger spherical aperture of radius of curvature is played, the runner of elliposoidal aperture is narrower so that local resistance loss herein is bigger, pressure
It is lower, it is more beneficial for producing Hydrodynamic cavitation and tip vortex cavitation that (tip vortex cavitation is i.e. due to the rate of flow of fluid at the blade tip of rotating vane
Maximum, therefore the point is easiest to occur the phenomenon of cavitation).Therefore cavitation bubble is more readily formed with its exit in aperture 10,
So as to improve the intensity of cavitation, and then improve mixing effect.
In order to farthest reduce the occurrence condition of cavitation, the structure of aperture 10 needs to be designed as follows：Such as Fig. 3 institutes
Show, aperture 10 connects forward face 8 and the blade convex surface 13 of blade, and the long axis ray direction in elliposoidal hole is thick along anti-airfoil fan
Directional spreding is spent, so as to consistent with the flow direction of fluid relative vane, increase flows through the fluid flow in aperture 10；Blade is recessed
Aperture at face 8 is more than the aperture at convex surface 13 so that the runner in aperture 10 integrally makes in the structure shunk, strong contraction
In aperture 10 and its exit is easier that cavitation occurs, and adds the cavitation intensity under the same terms；Meanwhile elliposoidal structure
Reduce cavitation bubble and form the required degree of superheat so that cavitation bubble is easier stable produce with existing in aperture 10；In addition, by
Radially first increase in width of blade and subtract afterwards, therefore close to the small of blade elongated end 11 and the small boring ratio center of vane groove 12
Hole is slightly smaller, to mitigate blade both ends because of punching and caused by stress surface is too small, stress is excessive strength problem.
Meanwhile, stirring vane that the utility model use different from the equal thickness stirring vane that common agitator uses
For anti-aerofoil profile, as shown in figure 4, simultaneously, forward face 8, the curvature on blade convex surface 13 and aerofoil profile are close, and front end has necessarily
The incoming angle of attack, but up and down on the contrary, i.e. the curvature of forward face 8 is less than the curvature of lower surface 13, and the angle of attack is negative value.Due to the leaf
Chip architecture and common aerofoil profile up and down on the contrary, thus reduce the pressure of blade rear end fluid, producing hydrofoil cavitation effect, (hydrofoil is empty
When change effect is that fluid flows through aerofoil profile, because flow velocity is different at aerofoil profile upper and lower end face, aerofoil profile afterbody produces the relatively low vortex of pressure,
And the phenomenon of cavitation occurs).The design of the anti-aerofoil profile causes blade convex surface 13 to turn into lee side, and runner is longer than forward face 8
Runner.According to Kutta-Joukowsky condition, while the design reduces blade lower surface pressure, make blade aperture two
The pressure difference increase at end, flow enhancement, so as to also increase the cavitation intensity in hole, from Fig. 4-Fig. 8 structure and pressure distribution pair
Than in, influence of the anti-airfoil structure to blade rear end pressure can be significantly found out；In addition, during using anti-airfoil structure, blade
It is stronger when the vortex occurred in the flow field of rear end is than using airfoil fan or plate blade, so as to significantly more reduce the pressure at this
Power, promote to produce hydrofoil cavitation at this.
In order to further reduce the condition of cavitation generation, cavitation intensity is constantly improved, the ultrasound in the utility model is changed
Energy device 7 is one group multiple, receives the signal of same ultrasonic generator jointly, meanwhile, it is arranged on by bearing on drive shaft, and
Angularly circumferentially；The quantity of ultrasonic transducer is determined by the ultrasonic wave launch angle of transducer, should ensure that in any radial direction
Direction has ultrasonic signal to send, and during ensuring that any blade turns to any angle, ultrasonic signal can all travel to blade
Rear end face, further stably to strengthen the effect of cavitation.
During utility model works, ultrasonic transducer launches ultrasonic signal to circumferential any angle, the signal
Stirring vane is propagated to, with hydrofoil cavitation and blade caused by Hydrodynamic cavitation, airfoil structure caused by the loose structure of blade
Tip vortex cavitation is combined caused by this body structure, and the intensity of cavitation can effectively occur in strengthening fluid, lifts the effect of stirring
Fruit.Even in that can not use the occasion of ultrasonic generator due to condition limitation, the utility model is used at work
The anti-airfoil fan of porous type can still be effectively facilitated the generation of cavitation, improve the stirring efficiency of device.
Above embodiment is only descriptive, not to restriction of the present utility model, as long as in the utility model
Spirit in, the change to embodiment described above is all in right of the present utility model.
Claims (8)
- A kind of 1. agitating device based on the compound cavitation of multiple spot, it is characterised in that：It is driven including one corresponding to motor (3) The anti-airfoil fan of porous type (1) of rotating shaft (2) connection, and the ultrasonic transduction connected on a bearing (6) in drive shaft (2) Device (7), the anti-airfoil fan of porous type (1) are arranged on the end both sides of vertical drive shaft (2), ultrasonic transducer (7) One ultrasonic generator (4) is connected by output line (5), stirring vane receives the ultrasonic wave letter of ultrasonic transducer (7) transmitting Number, realize the whipping process of the compound cavitation of multiple spot.
- A kind of 2. agitating device based on the compound cavitation of multiple spot according to claim 1, it is characterised in that：Pass through bearing (6) ultrasonic transducer (7) position being arranged on drive shaft (2) is higher than the installation site of the anti-airfoil fan of porous type (1).
- A kind of 3. agitating device based on the compound cavitation of multiple spot according to claim 1, it is characterised in that：The ultrasound is changed Can device (7) be one group multiple, along drive shaft (2) bearing (6) angularly circumferentially, receive same ultrasonic generator jointly (4) signal.
- A kind of 4. agitating device based on the compound cavitation of multiple spot according to claim 1, it is characterised in that：The porous type Anti- airfoil fan (1) is radially in the thin semicircular arc structure in side thickness side, is provided with and transmission in one end of semi arch The groove (12) that rotating shaft (2) is connected, the other end of semi arch is blade elongated end (11)；The thick side of semi arch is cambered surface (14), thin side is section (9).
- A kind of 5. agitating device based on the compound cavitation of multiple spot according to claim 4, it is characterised in that：Along anti-aerofoil profile leaf Piece semi arch section (9) end inner side is provided with the aperture (10) of several penetrating blade concave surfaces (8) and blade convex surface (13).
- A kind of 6. agitating device based on the compound cavitation of multiple spot according to claim 5, it is characterised in that：Several apertures (10) uniform along section (9) inside edge, the small aperture close to vane groove (12) end and blade elongated end (11) compares center Small aperture it is slightly smaller.
- A kind of 7. agitating device based on the compound cavitation of multiple spot according to claim 6, it is characterised in that：The aperture (10) it is elliposoidal hole, the long axis ray direction in elliposoidal hole is distributed along anti-airfoil fan thickness direction, forward face (8) place Aperture is more than the aperture at convex surface (13) place.
- A kind of 8. agitating device based on the compound cavitation of multiple spot according to claim 5, it is characterised in that：The porous type Concave surface (8) upward direction installation of anti-airfoil fan, and the anti-airfoil fan of porous type (1) is along drive shaft (2) inclined angle Set, and the angle of attack is negative value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720359950.2U CN206715839U (en) | 2017-04-07 | 2017-04-07 | A kind of agitating device based on the compound cavitation of multiple spot |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720359950.2U CN206715839U (en) | 2017-04-07 | 2017-04-07 | A kind of agitating device based on the compound cavitation of multiple spot |
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| CN206715839U true CN206715839U (en) | 2017-12-08 |
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| CN201720359950.2U Expired - Fee Related CN206715839U (en) | 2017-04-07 | 2017-04-07 | A kind of agitating device based on the compound cavitation of multiple spot |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110907131A (en) * | 2019-12-09 | 2020-03-24 | 中国科学院力学研究所 | Free-launch hydrofoil experimental device |
| CN111058215A (en) * | 2019-12-31 | 2020-04-24 | 西安交通大学 | Clothing cleaning device based on ultrasonic cavitation effect |
| CN115093090A (en) * | 2022-08-26 | 2022-09-23 | 山东道简环保科技有限公司 | Sludge dewatering processing apparatus based on cavitation principle |
-
2017
- 2017-04-07 CN CN201720359950.2U patent/CN206715839U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110907131A (en) * | 2019-12-09 | 2020-03-24 | 中国科学院力学研究所 | Free-launch hydrofoil experimental device |
| CN111058215A (en) * | 2019-12-31 | 2020-04-24 | 西安交通大学 | Clothing cleaning device based on ultrasonic cavitation effect |
| CN111058215B (en) * | 2019-12-31 | 2021-04-20 | 西安交通大学 | Clothing cleaning device based on ultrasonic cavitation effect |
| CN115093090A (en) * | 2022-08-26 | 2022-09-23 | 山东道简环保科技有限公司 | Sludge dewatering processing apparatus based on cavitation principle |
| CN115093090B (en) * | 2022-08-26 | 2022-11-18 | 山东道简环保科技有限公司 | Sludge dewatering processing apparatus based on cavitation principle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171208 Termination date: 20200407 |