CN208512304U - A kind of multiple nozzle spraying device for disperse dry powder micro-nano granules - Google Patents
A kind of multiple nozzle spraying device for disperse dry powder micro-nano granules Download PDFInfo
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- CN208512304U CN208512304U CN201820946204.8U CN201820946204U CN208512304U CN 208512304 U CN208512304 U CN 208512304U CN 201820946204 U CN201820946204 U CN 201820946204U CN 208512304 U CN208512304 U CN 208512304U
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- injector
- mixing chamber
- nozzle
- spraying device
- working fluid
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Abstract
The utility model discloses a kind of multiple nozzle spraying devices for disperse dry powder micro-nano granules.One end of injector in the utility model is input end, and the other end is big mixing chamber, wherein injector injection end and big mixing chamber connection, and the outlet of big mixing chamber is diffuser, and the injector uses multiinjector structure；Certain pressure is provided in injector arrival endP 0 Working fluid after, working fluid generates multiple jets by multiple nozzles in mixing chamber and forms an a wide range of, high intensity negative pressure region, be placed in injector injection end nano particle be inhaled into the big mixing chamber of injector after ejection is mixed with working fluid.In the utility model multiple nozzle spraying device nozzle exit will generate multiply have Strong shear power jet stream, generate a bigger Strong shear range, and multiple nozzle spraying device have higher mass ratio of induced-to-inducing air, injector it is more efficient.
Description
Technical field
The utility model relates to a kind of multiple nozzle spraying devices for disperse dry powder micro-nano granules, belong to nanometer technique
With aerosol technical field.
Background technique
With the fast development of nanotechnology, nano particle is gradually well known, and is used in daily life
In each corner, all there is very important status in fields such as chemical industry, medical treatment, environmental protection, military affairs.Nanoparticle and nanometer are multiple
Condensation material since its particle size is small, the characteristics such as the contact area between nano particle is big and have many unique performances.
Traditional powder mixed method is all often that uniformly, cannot effectively destroy the main aggregation of powder of nanometric particles
Body, therefore only about tens microns of nano particle of the size generated by these methods, such result cause very much
Aspect is all unable to give full play the advantage of nano particle.It is currently ground so how effectively to become dry powder micro-nano granules disperse
The hot spot studied carefully.
In existing dry powder micro-nano granules diffusion method, " dry type " method is because have micro-nano granules in disperse process
It is not required to will not to change by liquid, physicochemical properties, method is simple and has many advantages, such as that certain effect is wide by people
It is general to be applied to various occasions, however, also have disperse insufficient simultaneously, particle size distribution and initial particle deviation mistake after disperse
The disadvantages of big.
Summary of the invention
Insufficient, the grain diameter after disperse for disperse in current existing " dry type " dry powder micro-nano granules diffusion method
It is excessive and with initial particle differing distribution farther out the disadvantages of, the purpose of this utility model is to provide one kind for disperse dry powder it is micro-
The multiple nozzle spraying device of nano particle.The injector increases air Strong shear stream and dry powder micro-nano granules in mixing chamber and acts on
Range, can make particle dispersion more sufficiently.
In order to realize that the purpose of above-mentioned utility model, the technical solution adopted in the utility model be:
One end of injector is input end, and the other end is big mixing chamber, wherein injector injection end and big mixing chamber connection,
The outlet of big mixing chamber is diffuser, and the injector uses multiinjector structure；Certain pressure is provided in injector arrival endP 0 Working fluid after, working fluid by multiple nozzles is generated in mixing chamber multiple jets and formed one on a large scale,
High-intensitive negative pressure region, the nano particle for being placed in injector injection end are inhaled into after the big mixing chamber of injector and working fluid
Mixing sprays.
Furtherly, nozzle number is 2 ~ 10 in the multiinjector structure, and the distribution mode of nozzle is circular array, ellipse
Circular distribution or lineal layout.
Furtherly, the nozzle is C-D nozzle, and convergency is 0 degree ~ 60 degree, and angle of flare is 8 degree ~ 30 degree, nozzle throat
Portion's diameter is 0.8mm ~ 3mm.
Furtherly, the big mixing chamber is the cylindrical body that diameter is 15mm ~ 50mm.
The utility model has the beneficial effect that compared with prior art carries out nanometer compared to single injector injector
Particle dispersion, multiple nozzle spraying device will generate the jet stream that multiply has Strong shear power in nozzle exit in the utility model, produce
A raw bigger Strong shear range, and multiple nozzle spraying device has higher mass ratio of induced-to-inducing air, more efficient, the work of injector
Make to be up to better disperse effect after fluid mixes ejection with nano particle, gained particle has good unimodal just divide very much
Cloth, and average grain diameter is smaller.Increase nozzle number simultaneously and particle can effectively be increased using the distribution of reasonable nozzle space
The stability of disperse reduces particle and is mixing indoor residual.
Detailed description of the invention
Fig. 1 is multiinjector spatial distribution schematic diagram；
Fig. 2 is injector diagrammatic cross-section；
Fig. 3 a and Fig. 3 b are the position view that nozzle exit extracts shearing force；
The nozzle exit shearing force distribution map that Fig. 4 a and Fig. 4 b are obtained by numerical simulation.
Specific embodiment:
In order to make those skilled in the art more fully understand the technical solution in the utility model, below in conjunction with this reality
With the attached drawing in novel, clear, complete description is carried out to the technical solution in utility model, it is clear that described is only this
Utility model a part of the embodiment, instead of all the embodiments.Embodiment based on utility model, ordinary skill people
Member's every other embodiment obtained without making creative work, all should belong to the model of utility model protection
It encloses.
The utility model is further described below in conjunction with attached drawing and example, the utility model is being based on single injector
On the basis of spraying disperse, proposes and carry out nano particle injection disperse, multiple nozzle arrays such as Fig. 1 using multiple nozzle spraying device
It is shown, nozzle 1 be C-D nozzle, 0 degree ~ 60 degree of convergency angular range, 8 degree ~ 30 degree of angle of flare angular range, nozzle throat
Diameter range 0.8mm ~ 3mm.For the number and arrangement mode of nozzle depending on actual conditions, the distribution mode of nozzle can be circle
The various arrangements modes such as array, oval distribution, lineal layout.
The signal of injector section is as shown in Fig. 2, provide certain pressure in injector input end 2P 0 Working fluid after, work
Make fluid by multiple nozzles 1, generate jet stream in nozzle exit, and produces an a wide range of, high-intensitive negative pressure region,
The nano particle for being placed in injector ejecting port 3 is inhaled into injector mixing chamber 4, abundant with working fluid in diffuser 5
It mixes and is ejected.Wherein the working fluid can be the inert gases such as air either nitrogen.Injector import end pressureP 0 Range is 0.1Mpa ~ 0.6Mpa, whenP 0 After big Mr. Yu's value, supersonic jet will be generated in jet expansion.
In order to compare single injector injector and multiple nozzle spraying device jet expansion shearing force distribution situation, pass through CFD numerical value
The method of simulation respectively obtains the shearing force size at two kinds of injector nozzle exit same positions on line, and the position is in Fig. 3 a
With used in Fig. 3 b shown in dotted line, be located in mixing chamber, nozzle exit, and on the center line of injector injection end pipe,
The position is the position of the jet hit generated for the first time with jet expansion after most of nano particle is inhaled into mixing chamber, the position
The size and distribution situation for setting up cut shear play the role of vital during nano particle disperse.Shearing force
As shown in figures 4 a and 4b, ordinate indicates the height put on the line i.e. position of point to distribution situation in figure, and abscissa is in the point
Locate the absolute value of shearing force.Compare Fig. 4 a and Fig. 4 b it is found that the shearing force peak value size in multiinjector exit is slightly larger than single spray
Mouth, Strong shear regional scope is bigger, 4 peaks occurs.This shows in multiple nozzle spraying device provided by the utility model, nozzle
Exporting has the region of Strong shear power bigger, and range is wider, and nano particle is suffered after entering injector mixing chamber to be cut
Cut influence it is bigger, shear effect is stronger, thus have better disperse effect.
The above is only the preferred embodiment of the utility model, not imposes any restrictions to the utility model, all
According to any simple modification to the above embodiments of the utility model technical spirit, change and equivalent structural changes, still
Belong in the protection scope of technical solutions of the utility model.
Claims (4)
1. a kind of multiple nozzle spraying device for disperse dry powder micro-nano granules, it is characterised in that: one end of injector is import
End, the other end are big mixing chamber, wherein injector injection end and big mixing chamber connection, and the outlet of big mixing chamber is diffuser, institute
The injector stated uses multiinjector structure；Certain pressure is provided in injector arrival endP 0 Working fluid after, working fluid is logical
It crosses multiple nozzles to generate multiple jets in mixing chamber and form an a wide range of, high-intensitive negative pressure region, is placed in injection
The nano particle at device injection end mixes ejection with working fluid after being inhaled into the big mixing chamber of injector.
2. multiple nozzle spraying device according to claim 1, it is characterised in that: in the multiinjector structure nozzle number be 2 ~
10, the distribution mode of nozzle is circular array, ellipse distribution or lineal layout.
3. multiple nozzle spraying device according to claim 2, it is characterised in that: the nozzle is C-D nozzle, and convergency is
0 degree ~ 60 degree, angle of flare is 8 degree ~ 30 degree, and nozzle throat diameter is 0.8mm ~ 3mm.
4. multiple nozzle spraying device according to any one of claim 1 to 3, it is characterised in that: the big mixing chamber is straight
Diameter is the cylindrical body of 15mm ~ 50mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820946204.8U CN208512304U (en) | 2018-06-20 | 2018-06-20 | A kind of multiple nozzle spraying device for disperse dry powder micro-nano granules |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820946204.8U CN208512304U (en) | 2018-06-20 | 2018-06-20 | A kind of multiple nozzle spraying device for disperse dry powder micro-nano granules |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208512304U true CN208512304U (en) | 2019-02-19 |
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ID=65326684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820946204.8U Active CN208512304U (en) | 2018-06-20 | 2018-06-20 | A kind of multiple nozzle spraying device for disperse dry powder micro-nano granules |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208512304U (en) |
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2018
- 2018-06-20 CN CN201820946204.8U patent/CN208512304U/en active Active
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