A kind of secondary ultrasonic vibration atomizerTechnical field
The present invention relates to utilize the ultrasonic vibration atomizing field of piezo-electric effect, specifically, relate to a kind of secondary ultrasonic vibration atomizer.
Background technology
Atomize at more multi-field liquid towards media that all needs such as cooling, air wetting, medical treatment, dedusting, deodorizing, weaving, printing and dyeing, tobacco, flowers, telecommunications, papermaking, electronics, view, spraying, iron and steel, chemical industry, cleaning, granulation, mushroom cultivation, fruit storages, atomizing materialization mode commonly used has:
(1) mechanical atomization
To liquid pressurization, by nozzle inject static with high speed and high pressure or low speed flow in, jet velocity increases; During the liquid ejection, because pressure lowers suddenly, under actings in conjunction such as surface tension, viscosity and air drag, liquid forms spray flow by drippage, level and smooth stream, wave flow to the spray flow transition.
(2) ultrasonic atomizatio
Drive the ultrasonic vibration transducer by ultrasonic-frequency power supply, make piezoelectric vibrator can produce axial vibration, this mechanical resonance is transferred to the liquid that is in contact with it again, makes liquid generation cavitation, makes liquid surface produce the capillary wave of finite amplitude, thereby makes the atomization of liquid.
Exist problems such as complex structure, cost is high, power consumption is big, the atomizing particle diameter is big, nebulization efficiency is low, the atomizing flow is little in common mechanical atomization and the ultrasonic atomizatio mode; In order to be fit to new commercial Application needs; Exploitation is green, atomization technique has become one of basis and key technology of infant industry technical development efficiently, is guaranteeing good atomizing effect, when improving nebulization efficiency and atomization quality; Reduce the consumption of electric energy as far as possible; Thereby the minimizing environmental pollution realizes green low-carbon production, more easily control and more environmental protection.
Summary of the invention
For overcoming the deficiency that exists in the existing atomization technique, the object of the present invention is to provide a kind of secondary ultrasonic vibration atomizer, technical scheme of the present invention is:
A kind of secondary ultrasonic vibration atomizer; Comprise liquor charging pipeline, bolt, back shroud, electrode slice, piezoelectric ceramic piece, horn, secondary atomization radiating surface and primary atomization shower nozzle; Be set in the said back shroud on the said bolt, said electrode slice, said piezoelectric ceramic piece and said horn successively, constitute the oscillator part of said ultrasonic vibration atomizer with said bolt; Said primary atomization shower nozzle is connected the front end of horn,
Preferably, said primary atomization shower nozzle is through the front end that is threaded in horn of its rear end.
Said secondary atomization radiating surface is arranged between horn front end and the primary atomization shower nozzle rear end, is atomized once more behind the water smoke directive secondary atomization radiating surface of primary atomization shower nozzle ejection.
Said primary atomization shower nozzle is one to have the cylinder of axial centre blind hole; This cylinder connects firmly through screw thread and said horn front end at through hole end; The radial pore that circumference uniform distribution is arranged on the face of cylinder, this micropore and axial centre blind hole connect, and opening is towards said secondary atomization radiating surface.
Said secondary atomization radiating surface can be made as flat radiating surface, divergence form radiating surface or convergent type radiating surface according to actual needs.
The secondary atomization radiating surface is that the atomizer of divergence form radiating surface is applicable to that the atomizing zone requires bigger occasion, and the secondary atomization radiating surface is that the atomizer of convergent type radiating surface is applicable to that the atomizing zone requires the occasion of relatively concentrating.
Said liquor charging pipeline runs through said bolt, said back shroud, said piezoelectric ceramic piece, said horn and the said secondary atomization radiating surface that connects successively, is connected to said primary atomization shower nozzle.
Further, said liquor charging pipeline is connected with liquid feed device.
Further, said secondary ultrasonic atomizer is connected with a ultrasonic-frequency power supply.
During operation, the secondary ultrasonic atomizer connects ultrasonic-frequency power supply, and the liquor charging pipeline in the secondary ultrasonic atomizer is connected with liquid feed device.
After the electrode slice of oscillator inserted ultrasonic electrical signal, the oscillator part will produce the longitudinal ultrasonic vibration, and the horn front end amplifies the amplitude of ultrasonic vibration, and the secondary atomization radiating surface produces the ultrasonic vibration of certain amplitude.Liquid with certain pressure flows to the horn front end through the liquor charging pipeline, through the micropore ejection of primary atomization shower nozzle; Change steam fog into, and spray to the secondary atomization radiating surface, the minor diameter steam fog that makes primary atomization is under the ultrasonic vibration effect of secondary atomization radiating surface; Produce secondary-atomizing; Thereby obtain better atomization quality, The droplet sizes is tiny evenly, and atomizing effect is controlled easily.
The present invention also has the following advantages:
1. adopt the sandwich transducer structure
Oscillator according to the invention partly adopts the sandwich transducer structure, has advantages such as power capacity is big, simple in structure, adjustable power, the steam fog droplet is even, diameter is adjustable.
2. green low-carbon
On the basis that guarantees high-efficient atomizing, can reduce the liquid medium consumption to greatest extent, thereby realize environmental protection production.
3. atomizing medium is extensive
Various liquid mediums can atomize.
4. be widely used
It is more multi-field that the present invention not only can be used in air wetting, medical treatment, dedusting, deodorizing, weaving, printing and dyeing, tobacco, flowers, telecommunications, papermaking, electronics, view, spraying, iron and steel, chemical industry, cleaning, granulation, mushroom cultivation, fruit storage etc., can also be used in the cooling of technical fields such as hone, milling, Laser Processing, welding processing.
Description of drawings
Fig. 1 is the structural representation of a kind of secondary ultrasonic vibration atomizer of the present invention.
Fig. 2 is the structural representation of the another kind of secondary atomization radiating surface of the present invention secondary ultrasonic vibration atomizer that is the divergence form radiating surface.
Fig. 3 is the structural representation of another secondary atomization radiating surface of the present invention secondary ultrasonic vibration atomizer that is the convergent type radiating surface.
Fig. 4 is the application example sketch map of a kind of secondary ultrasonic vibration atomizer of the present invention.
Label declaration among the figure: 1.liquor charging pipeline 2. bolts, 3. back shroud, 4. electrode slice, 5. piezoelectric ceramic piece, 6. horn, 7. secondary atomization radiating surface, 8. primary atomization shower nozzle, 9. liquid feed device, 10. ultrasonic-frequency power supply.
The specific embodiment
Embodiment 1
As shown in Figure 1; Embodiments of the invention secondary ultrasonic vibration atomizer has adopted the piezoelectric ceramics sandwich type structural;Comprise bolt 2 and be set inback shroud 3, piezoelectricceramic piece 5,electrode slice 4 and thehorn 6 on the said bolt successively, and be arranged on the secondaryatomization radiating surface 7 ofhorn 6 front ends and connect firmly primaryatomization shower nozzle 8 at the horn front end through screw thread.Clamp back shroud 2, piezoelectricceramic piece 3 andelectrode slice 4 through the screw thread ofbolt 2 front ends and the connection ofhorn 6; Described backshroud 3, described piezoelectricceramic piece 5 and describedelectrode slice 4 screw thread and the describedhorn 6 through describedbolt 2 front ends connects and compresses; Constitute elementary ultrasonic atomizatio oscillator; Described secondaryatomization radiating surface 7 is positioned at the oscillator front end, and described primaryatomization shower nozzle 8 is positioned at secondaryatomization radiating surface 7 front ends.
After theelectrode slice 4 of oscillator inserted ultrasonic electrical signal, the oscillator part will produce the longitudinal ultrasonic vibration, andhorn 6 front ends amplify the amplitude of ultrasonic vibration, the ultrasonic vibration that secondaryatomization radiating surface 7 produces certain amplitude.Liquid with certain pressure flows tohorn 6 front ends throughliquor charging pipeline 1, through the micropore ejection of primaryatomization shower nozzle 8; Change steam fog into, and spray to secondaryatomization radiating surface 7, the minor diameter steam fog that makes primary atomization is under the ultrasonic vibration effect of secondaryatomization radiating surface 7; Produce secondary-atomizing; Thereby obtain better atomization quality, The droplet sizes is tiny evenly, and atomizing effect is controlled easily.
Embodiment 2
Shown in Figure 2 is the another kind of version of secondary ultrasonic vibration atomizer; Different with Fig. 1 is that its front end secondary atomization face is the divergence form radiating surface; Be applicable to that atomizing zone requires bigger occasion, the pipeline of liquid medium throughliquor charging pipeline 1,horn 6, be delivered to primaryatomization shower nozzle 8 front ends to liquid cooling medium.
Embodiment 3
Shown in Figure 3 is another version of secondary ultrasonic vibration atomizer; Different with Fig. 1 is that its front end secondary atomization face is the convergent type radiating surface; Be applicable to that atomizing zone requires the occasion of relatively concentrating, the pipeline of liquid medium throughliquor charging pipeline 1,horn 6, be delivered to primaryatomization shower nozzle 8 front ends to liquid cooling medium.
Embodiment 4
Shown in Figure 4 for adopting the secondary ultrasonic vibration atomization system of secondary ultrasonic vibration atomizer shown in Figure 1, it comprises the secondary ultrasonic vibration atomizer that is made up ofliquor charging pipeline 1,bolt 2,back shroud 3, piezoelectricceramic piece 5,electrode slice 4,horn 6, primaryatomization shower nozzle 8 and secondaryatomization radiating surface 7, quantitative liquid feed device 9 and ultrasonic-frequency power supply 10.Secondary ultrasonic vibration atomizer is under the driving of ultrasonic-frequency power supply 10; Through the vibration of ultrasonic vibrator, being transported to primaryatomization shower nozzle 8, through the micropore ejection of primaryatomization shower nozzle 8 front ends through quantitative liquid feed device 9; Change steam fog into; And spraying to secondaryatomization radiating surface 7, the minor diameter steam fog that makes primary atomization produces secondary-atomizing under the ultrasonic vibration effect of secondaryatomization radiating surface 7.
The foregoing description just is to let the one of ordinary skilled in the art can understand content of the present invention and enforcement according to this in order technical conceive of the present invention and characteristics to be described, to be its objective is, can not limit protection scope of the present invention with this.The variation or the modification of every equivalence that the essence of content has been done according to the present invention all should be encompassed in protection scope of the present invention.