CN104324839A - Natural focusing type ultrasonic atomization nozzle - Google Patents
Natural focusing type ultrasonic atomization nozzle Download PDFInfo
- Publication number
- CN104324839A CN104324839A CN201410648984.4A CN201410648984A CN104324839A CN 104324839 A CN104324839 A CN 104324839A CN 201410648984 A CN201410648984 A CN 201410648984A CN 104324839 A CN104324839 A CN 104324839A
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- Prior art keywords
- nozzle
- ultrasonic
- liquid
- face
- ultrasonic atomizatio
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- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
- B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
- B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
- B05B17/0607—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
Abstract
The invention discloses a natural focusing type ultrasonic atomization nozzle. The technical problems, such as large volume, invalid liquid splashing at a center hole, large air consumption, small maximal liquid flow, short spraying distance, of a natural scattering type atomization nozzle in the prior art are solved. According to the technical scheme, the natural focusing type ultrasonic atomization nozzle comprises an ultrasonic atomization energy converter, an air channel, a liquid nozzle and an outer shell, wherein the ultrasonic atomization energy converter is arranged in the outer shell; the liquid nozzle is fixedly arranged under the outer shell through a damping supporting mechanism; the air channel is arranged in the middle of the ultrasonic atomization energy converter; the ultrasonic atomization energy converter comprises a piezoelectric vibration pile and an ultrasonic amplitude transformer; the piezoelectric vibration pile is arranged in the outer shell; the ultrasonic amplitude transformer is located in the liquid nozzle; an atomization head end face is arranged on the bottom end face of the ultrasonic amplitude transformer; a nozzle liquid outlet of the liquid nozzle is concentrically surrounding the atomization head end face; a nozzle liquid inlet of the liquid nozzle is arranged on the upper part of the liquid nozzle. The natural focusing type ultrasonic atomization nozzle has the advantage that high-precise high-efficient ultrasonic atomization spraying can be realized.
Description
Technical field
The present invention relates to a kind of Ultrasonic spraying equipment, a kind of precision that is used for sprays specifically, spray printing, the naturally focusing ultrasonic atomizatio shower nozzle of air brushing.
Background technology
Atomizing spraying utilizes outside energy that liquid dispersion is become molecule, then be ejected in respective surfaces.The spraying technology of extensive use is in the market pressure atomization and pneumatic atomizing spraying.Its major defect is that atomizing particle jet velocity is fast because operating pressure is large, and thus splash serious, stock utilization is low, seriously polluted, cleaning difficulty.The flexible atomizing spraying technology of the one that therefore ultrasonic atomizatio is and grows up.It mainly utilizes ultrasonic vibration to make the liquid atomization, and then utilizes low-pressure gas to form atomization bundle.Because air pressure is little, paint splash is few, and utilization rate is high, and controllability is good.In addition due to the effect of ultrasonic vibration, nozzle not easily blocks, slurry good dispersion, and coating quality is good, is a kind of spraying technology of precision.
The principle of ultrasonic atomizatio as shown in Figure 1, liquid forms liquid film after being transported to surface of ultrasonic transducer, liquid film forms surface wave under the excitation of ultrasonic vibration, crest and trough alternately occur, along with the amplitude of ultrasonic transducer increases gradually, crest uprises, trough deepens, after reaching specific threshold, surface wave UNSTABLE FAILURE, drop flies out from crest.Closely, usual frequency is higher, and wavelength is shorter, and drop size is also less for the wavelength of surface wave and frequency relation.
In the middle of practical application, controlling coating quality and efficiency for improving, also can introduce shaping gas, to control the profile and the spraying distance that are atomized bundle.Therefore the atomizer of practical application at present mainly comprises two parts, atomization transducer, and shaping gas spout.Typical atomizer is designed to the design of nature divergence form.In the middle of this design, atomization transducer has a centre bore, and be atomized liquid and arrive transducer vibrations surface by centre bore, to vibration surface diffusion, as not having gas effect, droplet trends towards divergence form or fan-shapedly to fly out.The periphery of usual atomization transducer vibration head arranges annular gas spout, and like this, atomization bundle is surrounded by gas.Thus under the effect of gas, form definite shape (with reference to figure 4).
The design of nature divergence form compares extensive use, but still there are some shortcomings, as: volume is large, the invalid liquid splash of centre bore, and relative air consumption is large, and maximum flow quantity is little, sprays apart near etc.
Summary of the invention
Technical problem to be solved by this invention is: the atomizer for natural divergence form of the prior art exists some shortcomings, and volume is large, the invalid liquid splash of centre bore, and relative air consumption is large, and maximum flow quantity is little, the nearly problem waited of spraying distance.
The object of the invention is, propose a kind of naturally focusing ultrasonic atomizatio shower nozzle, this atomizer can effectively avoid above-mentioned shortcoming, improves accuracy and the high efficiency of atomizing spraying further.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of naturally focusing ultrasonic atomizatio shower nozzle, comprises ultrasonic atomizatio transducer, air flue, fluid injector and shell; Described ultrasonic atomizatio transducer is arranged in the enclosure, and fluid injector is fixedly installed on the below of shell by shock-absorbing support mechanism; Described air flue is arranged on the centre of ultrasonic atomizatio transducer;
Described ultrasonic atomizatio transducer comprises piezoelectric vibration heap and piles with piezoelectric vibration the ultrasonic amplitude transformer be connected; Described piezoelectric vibration heap is arranged in the enclosure; Described ultrasonic amplitude transformer is positioned at fluid injector; The bottom end face of described ultrasonic amplitude transformer is atomising head end face;
The nozzle liquid discharge ring of described fluid injector is around the concentrically circulating type setting of atomising head end face; The nozzle liquid entrance of fluid injector is arranged on the top of fluid injector;
The air flue entrance of described air flue is positioned at the top of shell, and air passage outlet is positioned at atomising head end face.
Further improvement, the vibration velocity of described ultrasonic atomizatio transducer is greater than 5m/s.
Further improvement, the cross sectional shape that nozzle liquid outlet and the atomising head end face of described fluid injector are formed is circular or square or track type.
Ultrasonic atomizatio transducer described in the present invention is ultrasonic atomizatio transducer of the prior art, and its concrete structure the present invention is not described in detail.
Compared with prior art, its beneficial effect is in the present invention:
1, volume is little, hand-holdable.
2, thin-walled atomization bundle, Pcnten-1 yne-4 is even; Atomization Shu Wending.
3, self-focusing design, spraying distance, when same gas-liquid flow, can reach the 1.5-2 of divergence form design doubly.
4, save throughput, under same nearly parallel atomization bundle condition, air consumption reduces nearly half.
5, liquid handling wide ranges, the highest fluid flow can reach 180 with the ratio of minimum flow, is more than 30 times of nature focus type design.
6, nebulization efficiency is high, and in same throughput situation, atomization of liquid amount can reach the 2-3 of natural divergence form design of the prior art doubly.
7, compatible pneumatic nebulization, pure pneumatic type can operate, thus expands liquid handling amount.
To sum up, the naturally focusing ultrasonic atomizatio shower nozzle in the present invention, relative to natural divergence form atomizer of the prior art, can realize the Ultrasonic spraying of precise high-efficiency.
Accompanying drawing explanation
Fig. 1 is ultrasonic atomizatio principle schematic.
Fig. 2 is the structural representation of the naturally focusing ultrasonic atomizatio shower nozzle of the present embodiment.
Fig. 3 is the front view at the A place in Fig. 2.
Fig. 4 is the working state figure of nature divergence form atomizer.
Fig. 5 is the working state figure of the naturally focusing ultrasonic atomizatio shower nozzle in embodiment.
Fig. 6 is micro-divergence form atomization bundle that the naturally focusing ultrasonic atomizatio shower nozzle in embodiment produces.
Fig. 7 is the parallel type atomization bundle that the naturally focusing ultrasonic atomizatio shower nozzle in embodiment produces.
Fig. 8 is the focus type atomization bundle that the naturally focusing ultrasonic atomizatio shower nozzle in embodiment produces.
Fig. 9 is the circular cross-section schematic diagram that the nozzle liquid outlet of fluid injector is formed with atomising head end face.
Figure 10 is the square-section schematic diagram that the nozzle liquid outlet of fluid injector is formed with atomising head end face.
Figure 11 is the race track shaped cross-section schematic diagram that the nozzle liquid outlet of fluid injector is formed with atomising head end face.
Figure 12 is the ultrasonic atomizatio transducer of integral structure design.
Figure 13 is the ultrasonic atomizatio transducer of split-type structural design.
Figure 14 is the structural representation of straight barrel type air flue.
Figure 15 is the structural representation of segmented air flue.
Figure 16 is the structural representation of interpolation type air flue.
In figure: 1, piezoelectric vibration heap, 2, ultrasonic amplitude transformer, 3, ultrasonic atomizatio transducer, 4, air flue, 5, air passage outlet, 6, atomising head end face, 7, nozzle liquid outlet, 8, fluid injector, 9, nozzle liquid entrance, 10, shell, 11, shock-absorbing support mechanism, 12, air flue entrance, 13, solid bar.
Detailed description of the invention
Below technical solution of the present invention is described in detail, but protection scope of the present invention is not limited to described embodiment.
For making content of the present invention more become apparent, be further described below in conjunction with accompanying drawing 1-Figure 16 and detailed description of the invention.
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Embodiment:
As Fig. 2, it is the structural representation of the present embodiment; A kind of naturally focusing ultrasonic atomizatio shower nozzle, comprises ultrasonic atomizatio transducer 3, air flue 4, fluid injector 8 and shell 10.
Ultrasonic atomizatio transducer 3 comprises piezoelectric vibration heap 1 and ultrasonic amplitude transformer 2.
Piezoelectric vibration heap 1, function produces ultrasonic vibration for utilizing inverse piezoelectric effect; Ultrasonic amplitude transformer 2, function is the amplitude that amplification piezoelectric heap produces.Piezoelectric vibration heap 1 and ultrasonic amplitude transformer 2 form ultrasonic atomizatio transducer 3.The vibration velocity of the ultrasonic atomizatio transducer 3 in the present embodiment is greater than 5m/s.
Ultrasonic atomizatio transducer 3 in the present embodiment is arranged in shell 10, and fluid injector 8 is fixedly installed on the below of shell 10 by shock-absorbing support mechanism 11; Air flue 4 is arranged on the centre of ultrasonic atomizatio transducer 3.
Air flue 4 in the middle of ultrasonic atomizatio transducer 3 in the present embodiment, to provide shaping gas, 12 is air flue entrance, and 5 is air passage outlet.
The effect of the shock-absorbing support mechanism 11 in the present embodiment is the vibrations between isolated shell 10 and fluid injector 8, effectively prevents ultrasonic atomizatio transducer 3 pairs of fluid injectors 8 from having an impact.Shock-absorbing support mechanism 11 in this enforcement adopts shock-absorbing support mechanism of the prior art all passable, and therefore the present embodiment is not further limited.
Ultrasonic atomizatio transducer 3 in the present embodiment comprises piezoelectric vibration heap 1 and piles 1 ultrasonic amplitude transformer be connected 2 with piezoelectric vibration; Piezoelectric vibration heap 1 is arranged in shell 10; Ultrasonic amplitude transformer 2 is positioned at fluid injector 8; The bottom end face of ultrasonic amplitude transformer 2 is atomising head end face 6; The nozzle liquid outlet 7 of fluid injector 8 is around atomising head end face 6 concentrically circulating type setting; The nozzle liquid entrance 9 of fluid injector 8 is arranged on the top of fluid injector 8; The air flue entrance 12 of air flue 4 is positioned at the top of shell 10, and air passage outlet 5 is positioned at atomising head end face 6.
Fluid injector 8 in the present embodiment is seal chamber, and nozzle liquid outlet 7 is around atomising head end face 6 concentrically circulating type setting; Nozzle liquid outlet 7 is concentric with atomising head end face 6.Fluid injector 8 in the present embodiment is for holding conveying liquid, and 9 is nozzle liquid entrance, and 7 is nozzle liquid outlet.Fluid injector 8 can be fixed on shell 10 by modes such as screw threads.
The cross sectional shape that nozzle liquid outlet 7 and the atomising head end face 6 of the fluid injector 8 in the present embodiment are formed is circular or square or track type.As shown in Fig. 9,10,11.
As shown in Figure 4, be the working state figure of nature divergence form atomizer.In figure, atomization bundle is solid cylindrical.As shown in Figure 5, the working state figure of the naturally focusing ultrasonic atomizatio shower nozzle of the present invention.In figure, atomization bundle is hollow cylinder.The present embodiment is just contrary with the design of natural divergence form atomizer of the prior art.In naturally focusing ultrasonic atomizatio shower nozzle, liquid is flowed to ultrasonic atomizatio transducer center line by nozzle ring liquid outlet nature, ultrasonic with the double action of gas under be atomized.
As shown in Fig. 6,7,8, it is the atomization bundle profile that naturally focusing ultrasonic atomizatio shower nozzle produces.In use, the large I of the throughput in adjustable air flue 4 obtains micro-divergence form, parallel type, and the atomization such as focus type bundle.
The size of the air flue 4 in the present embodiment, can flexible modulation as required, is reduce gas consumption, recommends to adopt 0.01mm-2mm.For reducing air consumption further, the segmented air flue shown in Figure 15 and 16 and interpolation type air flue can be adopted.In the middle of segmented air flue design, the different piece of air flue 4 has different cross-sectional areas, reduces air consumption by the method reducing cross-sectional area.In the middle of the design of interpolation type air flue, cylinder such as solid bar 13 grade is inserted the axial centerline of air flue 4 in air flue 4, thus it is long-pending to effectively reduce gas path cross sections; In this design of interpolation type air flue, gas becomes hollow cylindrical.
Ultrasonic atomizatio transducer 3 in the present embodiment, in the processing of reality, conveniently, its ultrasonic atomizatio transducer 3 atomization end surface part and ultrasonic amplitude transformer 2 can adopt split type structure.Its atomising head end face part can adopt screw thread, and welding, the modes such as bonding are connected with ultrasonic amplitude transformer 2.As shown in Figures 12 and 13.
As mentioned above, although represented with reference to specific preferred embodiment and described the present invention, it shall not be construed as the restriction to the present invention self.Under the spirit and scope of the present invention prerequisite not departing from claims definition, various change can be made in the form and details to it.
Claims (3)
1. a naturally focusing ultrasonic atomizatio shower nozzle, is characterized in that, comprises ultrasonic atomizatio transducer (3), air flue (4), fluid injector (8) and shell (10); Described ultrasonic atomizatio transducer (3) is arranged in shell (10), and fluid injector (8) is fixedly installed on the below of shell (10) by shock-absorbing support mechanism (11); Described air flue (4) is arranged on the centre of ultrasonic atomizatio transducer (3);
Described ultrasonic atomizatio transducer (3) comprises piezoelectric vibration heap (1) and piles the ultrasonic amplitude transformer (2) that (1) be connected with piezoelectric vibration; Described piezoelectric vibration heap (1) is arranged in shell (10); Described ultrasonic amplitude transformer (2) is positioned at fluid injector (8); The bottom end face of described ultrasonic amplitude transformer (2) is atomising head end face (6);
Nozzle liquid outlet (7) of described fluid injector (8) is around atomising head end face (6) concentrically circulating type setting; The nozzle liquid entrance (9) of fluid injector (8) is arranged on the top of fluid injector (8);
The air flue entrance (12) of described air flue (4) is positioned at the top of shell (10), and air passage outlet (5) is positioned at atomising head end face (6).
2. naturally focusing ultrasonic atomizatio shower nozzle as claimed in claim 1, the vibration velocity of described ultrasonic atomizatio transducer (3) is greater than 5m/s.
3. naturally focusing ultrasonic atomizatio shower nozzle as claimed in claim 1, it is characterized in that, the cross sectional shape that nozzle liquid outlet (7) and the atomising head end face (6) of described fluid injector (8) are formed is circular or square or track type.
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Cited By (11)
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CN105642454A (en) * | 2015-12-31 | 2016-06-08 | 东北大学 | Spray nozzle used for vacuum web spray coating |
CN106042646A (en) * | 2016-06-21 | 2016-10-26 | 祖海娇 | Integrated spray type printing nozzle |
WO2017012861A1 (en) * | 2015-07-23 | 2017-01-26 | Valeo Systemes Thermiques | Misting device and method for operating said device |
CN107899846A (en) * | 2017-11-21 | 2018-04-13 | 江西天祥通用航空股份有限公司 | A kind of ultrasonic atomizatio shower nozzle |
TWI626088B (en) * | 2016-10-12 | 2018-06-11 | 財團法人金屬工業研究發展中心 | Nozzle |
WO2018161546A1 (en) * | 2017-03-09 | 2018-09-13 | 京东方科技集团股份有限公司 | Printing device and printing method |
CN108700360A (en) * | 2016-02-15 | 2018-10-23 | 天冰控股公司 | Nucleation nozzle and the method for being used to form freezing nucleus |
CN109698145A (en) * | 2017-10-23 | 2019-04-30 | 东京毅力科创株式会社 | Nozzle apparatus ' of standby, liquid processing device and its method of operation and storage medium |
CN111085382A (en) * | 2019-12-30 | 2020-05-01 | 北京航空航天大学 | Non-nozzle type spraying device |
CN114932751A (en) * | 2022-06-08 | 2022-08-23 | 西北工业大学 | Device and method for ultrasonically focusing and spray-printing aerosol ink particles |
US11571222B2 (en) | 2017-11-21 | 2023-02-07 | Qingdao university of technology | Neurosurgical ultrasonic focusing assisted three-stage atomization cooling and postoperative wound film forming device |
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WO2017012861A1 (en) * | 2015-07-23 | 2017-01-26 | Valeo Systemes Thermiques | Misting device and method for operating said device |
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CN107899846A (en) * | 2017-11-21 | 2018-04-13 | 江西天祥通用航空股份有限公司 | A kind of ultrasonic atomizatio shower nozzle |
US11571222B2 (en) | 2017-11-21 | 2023-02-07 | Qingdao university of technology | Neurosurgical ultrasonic focusing assisted three-stage atomization cooling and postoperative wound film forming device |
CN111085382A (en) * | 2019-12-30 | 2020-05-01 | 北京航空航天大学 | Non-nozzle type spraying device |
CN114932751A (en) * | 2022-06-08 | 2022-08-23 | 西北工业大学 | Device and method for ultrasonically focusing and spray-printing aerosol ink particles |
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