CN112827687B - Spiral pipeline oscillation atomizer based on bionic surface - Google Patents
Spiral pipeline oscillation atomizer based on bionic surface Download PDFInfo
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- CN112827687B CN112827687B CN202011614332.0A CN202011614332A CN112827687B CN 112827687 B CN112827687 B CN 112827687B CN 202011614332 A CN202011614332 A CN 202011614332A CN 112827687 B CN112827687 B CN 112827687B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
- B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
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- 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
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Abstract
The invention provides a spiral pipeline oscillation atomizer based on a bionic surface, which not only has good atomization performance, but also can enhance the distance and stability of jet flow, effectively reduce energy consumption, improve liquid atomization efficiency and have good application prospect. The structure of the device mainly comprises an atomizer main body, a connecting rod and an external oscillating block, wherein a gas flow channel, a liquid flow channel, a gas-liquid mixing cavity and a bionic surface flow channel are arranged in the atomizer main body. The gas flow passage is a contraction circular tube, and the inner wall of the gas flow passage is a double-spiral surface. When high-pressure gas is introduced, the flow channel can enable the gas to flow at a large speed and realize rotary propulsion movement, and the gas collides with the liquid after the speed is increased in the gas-liquid mixing cavity, so that the primary atomization action of the liquid is realized. After passing through the bionic surface flow channel, secondary acceleration is realized, the oscillation block is impacted after the fog drops leave the atomizer main body, and secondary atomization crushing of the fog drops is realized by utilizing high-frequency vibration of the oscillation block so as to improve the atomization quality of the whole system.
Description
Technical Field
The invention belongs to the technical field of atomization and dust removal, and particularly relates to a spiral pipeline oscillation atomizer based on a bionic surface.
Background
The atomizing dust removal technology is a method for effectively removing fine particles in air at present, and most of traditional atomizing equipment adopts high-pressure atomization and ultrasonic atomization methods, but the atomizing equipment needs to be additionally provided with an excitation device, so that the energy consumption can be greatly increased, and the equipment has a complex structure and poor atomizing effect. Under the closed environment such as desulfurizing tower, scrubbing tower, but under the non-closed environment and the relatively complicated environment such as mine tunnel, open-air store yard, building site, the application effect can greatly be discounted to this kind of atomizing equipment under the closed occasion environment such as desulfurizing tower, scrubbing tower.
At present, a cavity with a specific structure is arranged on atomization equipment, continuous jet flow is converted into pulse jet flow by utilizing oscillation generated by the cavity during jet flow, and through the energy gathering effect, fluid obtains higher energy in a very short time, and then the fluid generates high-speed moving fog particles at an outlet, so that a better atomization effect is obtained. For example: patent publication No. CN204571851U, patent publication No. CN203711178U, patent publication No. CN203961086U and the like have large or complicated structural dimensions, and energy accumulation and release inside the atomizing device are not stable, and the peak value of the outlet velocity is low. In a non-closed environment, a continuous stable jet and a high quality atomization behavior cannot be obtained.
Therefore, how to greatly refine the particle size of the fog drops of the atomizing equipment in a non-closed occasion and continuously stabilize the jet flow so as to meet the requirement of high-efficiency removal of fine particles is one of the problems to be solved by the technical personnel in the field.
Disclosure of Invention
The present invention is directed to solving the above-mentioned problems of the prior art. Therefore, the invention provides a spiral pipeline oscillation atomizer based on a bionic surface. The technical scheme of the invention is as follows:
the invention provides a spiral pipeline oscillation atomizer based on a bionic surface, which comprises an atomizer main body, and an external connecting rod and an oscillation block, wherein a gas flow passage, a liquid flow passage, a gas-liquid mixing cavity and a bionic surface flow passage are arranged in the atomizer main body;
the gas flow channel is a tapered circular pipe, the inner wall of the gas flow channel is a double-spiral surface, and the gas flow channel is communicated with the gas-liquid mixing cavity;
the liquid flow passage comprises interconnected liquid inlet and outlet sections; the liquid inlet section is used for connecting an external pipeline, the axis of the liquid inlet section is parallel to the axis of the gas flow channel, and the liquid outlet section is an inclined circular truncated cone type contraction pipeline which is communicated with the gas-liquid mixing cavity; the plurality of liquid flow passages are circumferentially distributed around the gas flow passage;
one end surface of the gas-liquid mixing cavity is communicated with the gas flow channel and the liquid flow channel, and the other end of the gas-liquid mixing cavity is communicated with the bionic surface flow channel inlet;
the bionic surface flow channel is a tapered pipeline, and the inner wall of the bionic surface flow channel is provided with a plurality of bionic resistance reducing rings; the bionic drag reduction ring is an annular surface structure consisting of a plurality of circular bulges;
the oscillating block is connected and fixed with the atomizer main body through a plurality of connecting rods, the main body structure of the oscillating block is a cylindrical block, and a through hole with a specific shape is formed in the oscillating block.
As a preferable mode of the basic invention, the length of the gas flow path is 0.65 to 0.8 times the total length of the atomizer, the double spiral surface of the inner wall, and the contraction ratio of the gas flow path is 0.47 to 0.53.
As a preferable mode of the basic invention, the liquid outlet section has a contraction ratio of 0.43 to 0.47, and the inner wall thereof is a smooth surface; the inner wall of the liquid inlet section is provided with threads for connecting an external pipeline.
As a preferable mode of the basic invention, the liquid inlet sections of the plurality of liquid flow channels are distributed with a radius of 2.4 to 2.8 times the radius of the gas flow channels.
As a preferable scheme of the basic invention, the contraction ratio of the bionic surface flow passage is 0.4-0.5, and the central point of the inlet of the bionic surface flow passage is positioned on the extension line of the axis of the liquid outlet section.
As a preferred scheme of the basic invention, the oscillating block is of a cylindrical structure, and the diameter of the oscillating block is the same as that of the outlet of the bionic surface runner; a through hole is formed in the oscillating block, one side of the through hole with a large caliber is close to the outlet of the bionic surface flow passage, and one side of the through hole with a small caliber is communicated with the outside; the axis of the oscillating block coincides with the axis of the atomizer main body, and the distance between the bionic surface flow passage and the oscillating block is 0.052 times of the length of the whole structure.
As a preferable scheme of the basic invention, the double-spiral surface of the inner wall of the gas flow channel is a semicircular convex spiral surface obtained by coupling two three-dimensional spiral lines, and the convex height of the semicircular convex spiral surface is 0.11 times of the outer diameter of the whole gas flow channel; the initial angles of the two spiral lines are different by 180 degrees, wherein the equation of one spiral curve satisfies the following conditions:
in the formula, x is the abscissa of any point on the spiral line; y is the ordinate of any point; z is the rotation height of the spiral line in the coordinate system; t is the rotation angle of the helix.
As the preferable scheme of the basic invention, the plurality of bionic drag reduction rings are distributed at equal intervals, and the distribution interval is 0.1 time of the length of the bionic surface flow channel; each resistance reducing ring is formed by a plurality of hemispherical bulges with the same size in a circumferential distribution mode, and the radius of each hemispherical bulge is 0.05 times of the diameter of the resistance reducing ring.
Compared with the prior art, the beneficial effect that this hair had includes:
under the structural design of the atomizer, high-pressure gas is introduced into the gas flow channel, and after the gas is accelerated by the internal spiral surface and the tapered pipeline, ultrahigh-speed rotational flow gas is generated and enters the gas-liquid mixing cavity, and liquid also accelerates to enter the gas-liquid mixing cavity through the tapered liquid flow channel. The super-high speed swirling gas impacts the liquid to destroy the surface tension of the liquid, so that the liquid is split into liquid drops, and the effect of primary atomization is achieved. Then, the airflow containing the liquid drops passes through the bionic surface flow channel, as the inner wall of the bionic surface flow channel is provided with a plurality of bionic drag reduction rings, the bionic surface flow channel has obvious drag reduction effect on the fluid moving at high speed, and the bionic surface flow channel has a contraction design, the flow speed of the airflow containing the liquid drops can be further improved. And finally, the ultrahigh-speed gas-liquid mixed liquid continuously impacts the oscillating block to enable the oscillating block to generate high-frequency oscillation to intensify the secondary atomization of the fog drops, so that the generated continuous jet flow has a smaller fog drop particle size and a higher fog drop concentration.
According to the invention, through the spiral surface and the bionic surface, the resistance of gas jet flow is effectively reduced, the jet flow speed is increased, the interaction between gas and liquid is enhanced, and a better atomization effect can be achieved under lower pressure. Compared with the prior art, the invention has the advantages of simple structure and strong reliability, can improve the atomization performance, the jet distance and the stability of the whole atomization system, and can also play a role in energy conservation.
Drawings
Fig. 1 is a half-sectional view of a spiral tube oscillating atomizer based on a biomimetic surface.
Fig. 2 is a structural schematic diagram of a spiral pipeline oscillation atomizer based on a bionic surface.
Fig. 3 is a half-sectional view of the oscillating block.
FIG. 4 is a semi-sectional view of a biomimetic surface flow channel.
Fig. 5 isbase:Sub>A cross-sectional viewbase:Sub>A-base:Sub>A of fig. 1.
Detailed Description
The invention will be further illustrated and described with reference to specific embodiments. The technical features of the embodiments of the present invention can be combined correspondingly without mutual conflict.
As shown in fig. 1 to 2, the spiral pipe oscillation atomizer based on a bionic surface according to the embodiment of the present invention includes an atomizer main body (inside of which is provided with a gas flow passage 1, a liquid flow passage 2, a gas-liquid mixing chamber 3, and a bionic surface flow passage 4), and an external connecting rod 5 and an oscillation block 6. The length of the gas flow channel 1 is 0.7 times of the total length of the atomizer, a contraction circular truncated cone-shaped pipeline is arranged in the gas flow channel, the inner wall of the gas flow channel is a double-spiral surface 10, the contraction ratio is 0.5, the outer surface of the gas flow channel is provided with threads 11 which can be used for being connected with an external gas pipeline, and the non-free end of the gas flow channel 1 is communicated with the gas-liquid mixing cavity 3.
In one embodiment, the double helical surface 10 is a semicircular convex helical surface formed by coupling two three-dimensional helical wires, and the convex height of the semicircular convex helical surface is 0.11 times of the outer diameter of the whole gas flow passage. The initial angles of the two spiral lines are different by 180 degrees, wherein the equation of one spiral curve satisfies the following conditions:
in the formula, x is the abscissa of any point on the spiral line; y is the ordinate of any point; z is the rotation height of the spiral line in the coordinate system; t is the rotation angle of the helix.
As shown in fig. 1 and 5, the liquid flow passage 2 is divided into a liquid inlet section 12 and a liquid outlet section 8, the inner wall of the liquid inlet section is provided with screw threads 9 for connecting an external pipeline conveniently, the axis of the liquid inlet section is parallel to the axis of the gas flow passage 1, the liquid outlet section 8 is a tapered truncated cone type contraction pipeline, the contraction ratio is 0.46, and the inner wall is a smooth surface; the liquid channels 2 are circumferentially distributed around the gas channel 1 with a radius 2.6 times the radius of the gas channel 1.
In one embodiment, the gas-liquid mixing chamber 3 is of a diamond-like structure, the inner wall of the gas-liquid mixing chamber is a smooth surface, one end surface of the gas-liquid mixing chamber is communicated with the outlets of the gas flow channel 1 and the liquid flow channel 2, and the other end of the gas-liquid mixing chamber is communicated with the inlet of the bionic surface flow channel 4. The bionic surface flow passage 4 is a contraction type pipeline, the contraction ratio is 0.4, and the central point of the inlet of the bionic surface flow passage is positioned on the intersection point of the axis extension lines of the liquid outlet sections.
As shown in fig. 4, the bionic surface 7 is obtained by simplifying and improving a hydrophobic surface in the nature, and is formed by a plurality of bionic drag reduction rings which are distributed at equal intervals, and the distribution interval is 0.1 time of the length of a flow channel of the bionic surface. Each resistance reducing ring is formed by a plurality of hemispherical bulges with the same size in a circumferential distribution mode, and the radius of each hemispherical bulge is 0.05 times of the diameter of the resistance reducing ring.
In a preferred embodiment, the oscillating mass 6 is a cylinder structure, as shown in fig. 3, and has the same diameter as the outlet diameter of the bionic surface flow channel 4. The inner part is provided with a through hole with a special-shaped structure, one side of the large caliber of the through hole is close to the outlet of the bionic surface flow channel, and one side of the small caliber is communicated with the outside. The oscillating block 6 is fixed on the atomizer main body through the connecting rod 5, the axis of the oscillating block coincides with the axis of the atomizer main body, and the distance between the outlet of the bionic surface flow channel and the oscillating block 1 is 0.052 times of the length of the whole structure.
The specific working process and working principle of the spiral pipeline oscillation atomizer based on the bionic surface are introduced as follows: high-pressure gas is introduced into the gas flow channel, and after the high-pressure gas is accelerated by the inner spiral surface and the contraction pipeline, ultrahigh-speed rotational flow gas is generated and enters the gas-liquid mixing cavity, and liquid passes through the liquid flow channel and also enters the gas-liquid mixing cavity under the action of the contraction pipeline. The super-high speed swirling gas impacts the liquid to destroy the surface tension of the liquid, so that the liquid is split into liquid drops, and the effect of primary atomization is achieved. Then, the airflow containing the liquid drops passes through the bionic surface flow channel, as the inner wall of the bionic surface flow channel is provided with a plurality of bionic resistance reducing rings, the bionic surface flow channel has obvious resistance reducing effect on the fluid moving at high speed, and the bionic surface flow channel has certain contraction design, so that the flow speed of the airflow containing the liquid drops can be further improved. And finally, the ultrahigh-speed gas-liquid mixed liquid continuously impacts the oscillating block to enable the oscillating block to generate high-frequency oscillation to intensify the secondary atomization of the fog drops, so that the generated continuous jet flow has a smaller fog drop particle size and a higher fog drop concentration.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (6)
1. A spiral pipeline oscillation atomizer based on a bionic surface is characterized by comprising an atomizer main body, and an external connecting rod and an external oscillation block, wherein a gas flow passage, a liquid flow passage, a gas-liquid mixing cavity and a bionic surface flow passage are arranged in the atomizer main body;
the gas flow channel is a tapered circular pipe, the inner wall of the gas flow channel is a double-spiral surface, and the gas flow channel is communicated with the gas-liquid mixing cavity; the double-spiral surface of the inner wall of the gas flow channel is a semicircular convex spiral surface formed by coupling two three-dimensional spiral lines; the initial angle of the two spiral lines is different by 180 degrees, wherein one spiral curve equation satisfies the following conditions:
in the formula, x is the abscissa of any point on the spiral line; y is the ordinate of any point; z is the rotation height of the spiral line in the coordinate system; t is the rotation angle of the spiral line;
the liquid flow passage comprises interconnected liquid inlet and outlet sections; the liquid inlet section is used for connecting an external pipeline, the axis of the liquid inlet section is parallel to the axis of the gas flow channel, and the liquid outlet section is an inclined circular truncated cone type contraction pipeline which is communicated with the gas-liquid mixing cavity; the plurality of liquid flow passages are circumferentially distributed around the gas flow passage;
the gas-liquid mixing cavity is of a diamond-like structure, one end face of the gas-liquid mixing cavity is communicated with the gas flow channel and the liquid flow channel, and the other end of the gas-liquid mixing cavity is communicated with the bionic surface flow channel inlet; the contraction ratio of the bionic surface flow channel is 0.4-0.5, and the central point of the inlet of the bionic surface flow channel is positioned on the extension line of the axis of the liquid outlet section;
the bionic surface flow passage is a tapered pipeline, and the inner wall of the bionic surface flow passage is provided with a plurality of bionic resistance reducing rings; the plurality of bionic drag reduction rings are distributed at equal intervals, and the distribution interval is 0.1 time of the length of the bionic surface flow channel; each bionic drag reduction ring is formed by circumferentially distributing a plurality of hemispherical bulges with the same size, and the radius of each hemispherical bulge is 0.05 times of the diameter of the drag reduction ring;
the oscillating block is connected and fixed with the atomizer main body through a plurality of connecting rods, the main body structure of the oscillating block is a cylindrical block, and the diameter of the oscillating block is the same as that of the outlet of the bionic surface flow channel; a through hole is formed in the oscillating block, one side of the through hole with a large caliber is close to the outlet of the bionic surface flow channel, and one side of the through hole with a small caliber is communicated with the outside; the axis of the oscillating block coincides with the axis of the atomizer body.
2. The spiral pipe oscillating atomizer based on bionic surface as claimed in claim 1, wherein: the length of the gas flow channel is 0.65-0.8 times of the total length of the atomizer, the contraction ratio of the gas flow channel on the double-spiral surface of the inner wall is 0.47-0.53.
3. The spiral pipe oscillating atomizer based on bionic surface as claimed in claim 1, wherein: the contraction ratio of the liquid outlet section is 0.43-0.47, and the inner wall of the liquid outlet section is a smooth surface; the inner wall of the liquid inlet section is provided with threads for connecting an external pipeline.
4. The spiral pipe oscillating atomizer based on bionic surface as claimed in claim 1, wherein: the liquid inlet section of the liquid flow channels has a distribution radius 2.4-2.8 times of the radius of the gas flow channels.
5. The spiral pipe oscillating atomizer based on bionic surface as claimed in claim 1, wherein: the distance between the outlet of the bionic surface runner and the oscillating block is 0.052 times of the length of the whole structure.
6. The spiral pipe oscillating atomizer based on bionic surface as claimed in claim 1, wherein: the height of the semicircular convex spiral surface is 0.11 times of the outer diameter of the whole gas flow passage.
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| CN116213179B (en) * | 2023-05-10 | 2023-07-28 | 通威微电子有限公司 | Ultrasonic atomization glue spraying device, ultrasonic atomization glue spraying system and seed crystal bonding method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1652876A (en) * | 2002-05-07 | 2005-08-10 | 喷洒系统公司 | Internal mix air atomizing spray nozzle assembly |
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| CN201240934Y (en) * | 2008-07-18 | 2009-05-20 | 丁晓 | Jet flow type aeration system |
| CN201503015U (en) * | 2009-10-21 | 2010-06-09 | 东南大学 | Adjustable spiral bubble atomizer |
| CN201823646U (en) * | 2010-09-17 | 2011-05-11 | 重庆新申世纪化工有限公司 | Jet nozzle through gas-liquid impact at acute angle |
| CN103775010B (en) * | 2014-01-22 | 2016-03-23 | 西南石油大学 | A kind of horizontal segment gas drilling hole cleaning instrument |
| CN105240095A (en) * | 2015-11-19 | 2016-01-13 | 大连海事大学 | SCR system self-oscillation pulse atomization nozzle applied to marine diesel engine |
| CN105944862A (en) * | 2016-07-07 | 2016-09-21 | 北京航天发射技术研究所 | Atomizing nozzle and atomizing spray head using atomizing nozzle |
| CN108339676A (en) * | 2018-01-15 | 2018-07-31 | 燕山大学 | A kind of composite bionic surface jet nozzle |
| CN111744382B (en) * | 2019-03-29 | 2023-01-03 | 中石化广州工程有限公司 | Gas-liquid two-phase flow distributor and gas-liquid two-phase flow distribution method |
| CN210097425U (en) * | 2019-05-09 | 2020-02-21 | 南京林业大学 | Mixer for uniformly mixing air and cutting fluid |
| JP7370534B2 (en) * | 2019-05-22 | 2023-10-30 | 株式会社リスニ | liquid processing equipment |
| CN210230329U (en) * | 2019-05-29 | 2020-04-03 | 丹阳市百盛电器有限公司 | High-flux air gun |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1652876A (en) * | 2002-05-07 | 2005-08-10 | 喷洒系统公司 | Internal mix air atomizing spray nozzle assembly |
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