CN112808478B - Device and method for synergistically enhancing double-fluid atomization performance - Google Patents
Device and method for synergistically enhancing double-fluid atomization performance Download PDFInfo
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- CN112808478B CN112808478B CN202011614327.XA CN202011614327A CN112808478B CN 112808478 B CN112808478 B CN 112808478B CN 202011614327 A CN202011614327 A CN 202011614327A CN 112808478 B CN112808478 B CN 112808478B
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T70/00—Maritime or waterways transport
- Y02T70/10—Measures concerning design or construction of watercraft hulls
Abstract
The invention discloses a device and a method for synergistically enhancing double-fluid atomization performance, wherein the device is formed by connecting multiple stages of double-fluid atomization units in series, and the output of a liquid mixing unit in the previous stage of double-fluid atomization unit is connected with the input of a liquid feeding unit in the next stage of double-fluid atomization unit; the output of the last stage of double-fluid atomization unit is used as the output of the whole device, and a heating device is also arranged in the liquid feeding unit. The invention reduces the acting force among liquid molecules by heating the liquid or the fog drops, and is beneficial to the breaking of the liquid drops. The mode of multistage series connection makes gas-liquid mixture flow can promote by a wide margin than the former one-level, and the reaction in the double-fluid atomizing device unit can be more violent than the preceding stage, can reach with less energy consumption, produces high-speed fluidic effect, and the droplet quality of production is more heightened.
Description
Technical Field
The invention belongs to the technical field of atomization and dust removal, and particularly provides a device and a method for synergistically enhancing double-fluid atomization performance, which are used for reducing the content of particles with the particle size of less than or equal to 2.5 micrometers in atmosphere.
Background
With the rapid growth of social economy and the rapid promotion of urbanization and industrialization in China, huge resource demand and energy consumption add a heavy burden on environmental protection to social development. The generation and diffusion of a large amount of atmospheric particulates (PM2.5, PM10, TSP and the like) not only add a lot of health and safety risks to urban residents, but also cause permanent harm to pneumoconiosis of workers, further cause the related industries to be corrected in a limited period or even shut down due to excessive pollution, and form a serious threat to sustainable development strategy and ecological civilization construction in China. It is proved by research that when the particle size of the fog drops is close to that of the dust particles, the probability of adsorption and adhesion between the fog drops and the dust particles is the largest, so that the dust is precipitated, and the requirement on the particle size of liquid spray drops is very high. The gas-liquid two-fluid atomization technology is utilized to generate the superfine water mist, the adsorption, adhesion and sedimentation efficiencies in the wet-method removal process of the fine particles can be effectively improved, the emission control effect of the atmospheric particles is greatly influenced, and the application potential and value are huge.
However, the application effect of the double-fluid atomizing nozzle is greatly reduced when the double-fluid atomizing nozzle is mainly applied to closed occasions such as a desulfurizing tower, a washing tower and the like and is applied to non-closed occasions such as a mine roadway, an open-air storage yard, a building site and the like. Therefore, how to realize the great refinement of the droplet particle size 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 invention aims to overcome the defects in the prior art, and provides a method and a device for obtaining stable jet flow and high-quality atomization effect aiming at the problems of unsatisfactory atomization effect and the like of an oscillation atomization nozzle in an open occasion.
In order to solve the technical problems, the invention provides the following technical scheme:
the invention firstly provides a method and a device for synergistically enhancing the double-fluid atomization performance, wherein the device is formed by connecting a plurality of stages of double-fluid atomization units in series, each stage of double-fluid atomization unit at least comprises a liquid feeding unit, a gas feeding unit and a gas-liquid mixing unit which is respectively connected with the liquid feeding unit and the gas feeding unit and is used for realizing mixing, wherein the output of the liquid mixing unit in the previous stage of double-fluid atomization unit is connected with the input of the liquid feeding unit in the next stage of double-fluid atomization unit; the output of the last stage of double-fluid atomization unit is used as the output of the whole device;
the liquid feed unit comprises a heating device arranged on a liquid feed pipe; the gas feed unit includes a booster fan disposed on the gas feed conduit.
As a preferred embodiment of the invention, the series of two-fluid atomization units is preferably 3 to 4 stages.
As a preferred scheme of the invention, the gas-liquid mixing unit is a two-fluid self-oscillation atomizing nozzle which comprises a gas flow channel, a liquid flow channel, a tapered gas-liquid mixing cavity, a bionic jet flow channel and a self-oscillation cavity arranged at the front end of the gas-liquid mixing cavity; the gas feed unit passes through the gas runner and links to each other with the big aperture end of gas-liquid mixing chamber, the liquid feed unit passes through the liquid runner and is connected to the lateral wall of gas-liquid mixing chamber, the bionical efflux runner is connected to the small aperture end of gas-liquid mixing chamber, and the self-excited oscillation chamber is connected and is fixed with gas-liquid mixing chamber wall through many connecting rods, and the self-excited oscillation chamber is located bionical efflux runner's positive front end.
As the preferred scheme of the invention, the bionic jet flow channel is a tapered pipeline, and the inner wall of the bionic jet 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.
As a preferred scheme of the 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 jet 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.
As the preferred scheme of the invention, the contraction ratio of the bionic jet flow channel is 0.4-0.5, and the central axis of the bionic jet flow channel is superposed with the central axis of the gas-liquid mixing cavity.
As the preferred scheme of the invention, the self-oscillation cavity is of a cylindrical structure, a through hole is formed in the self-oscillation cavity, one side with a large caliber of the through hole is close to the outlet of the bionic jet flow channel, and one side with a small caliber is communicated with the outside; the axis of the self-oscillation cavity is coincided with the central axis of the gas-liquid mixing cavity.
The invention also discloses a method for synergistically enhancing the two-fluid atomization performance of the device, which comprises the following steps:
the liquid enters a liquid pipeline of a first-stage two-fluid atomization unit, and the liquid flowing through the liquid pipeline is heated by a heating device, so that the temperature of the liquid is raised to 70-80 ℃; the booster pump is utilized to increase the liquid pressure in the flow channel and increase the liquid flow rate;
gas enters a gas flow channel of the first-stage double-fluid atomization unit, and the flow velocity of the gas in the pipeline is improved by using a booster fan; gas and liquid enter the gas-liquid mixing cavity through the gas pipeline and the liquid pipeline respectively, the gas impacts the liquid to destroy the surface tension of the liquid so as to split the liquid into liquid drops, thereby achieving the effect of primary atomization, the airflow containing liquid drops passes through the bionic surface flow channel, and because the inner wall of the bionic surface flow channel is provided with a plurality of bionic drag reduction rings, has drag reduction effect on fluid moving at high speed, and the bionic surface flow channel has a contraction design, can further improve the flow speed of the air flow containing liquid drops, and finally, the high-speed gas-liquid mixed liquid continuously impacts the self-oscillation cavity to enable the self-oscillation cavity to generate high-frequency oscillation to intensify the secondary atomization of the fog drops, so that the generated continuous jet flow has smaller droplet particle size and higher droplet concentration, and the droplets are sprayed out from the outlet of the oscillating atomizing nozzle to be used as the output of a liquid pipeline of a next-stage two-fluid atomizing unit;
in a liquid pipeline of each subsequent stage of the two-fluid atomization unit, a heating device is used for heating the fog drops flowing through, so that the temperature is controlled to be 70-80 ℃; gas enters a gas flow channel of the double-fluid atomization unit, and the flow rate of the gas is controlled by using a booster fan; the gas and the fog drops enter the oscillation atomizing nozzle for atomization, and the fog drops are sprayed out from an outlet of the oscillation atomizing nozzle; the outlet of the oscillating atomizing nozzle of the last stage of the two-fluid atomizing device is communicated with the external space to spray high-speed jet flow.
Compared with the prior art, the invention has the beneficial effects that:
the liquid feeding pipeline is provided with the heating device to heat the liquid or the fog drops, and after the liquid is heated, the molecular motion of the liquid is more active, so that the acting force among liquid molecules can be reduced, namely the internal force and the surface tension of the liquid are weakened, and the liquid drops can be favorably crushed.
The invention utilizes the booster pump and the booster fan to respectively improve the flow velocity of liquid and gas, and the liquid and the gas mutually impact in the double-fluid nozzle to ensure that liquid drops are primarily atomized.
In the oscillating and atomizing nozzle, gas-liquid mixed liquid impacts a self-oscillation cavity at a high speed, and liquid drops are forced to generate secondary atomization by utilizing the high-frequency vibration of the oscillation cavity.
According to the invention, as the gas-liquid mixed liquid is sprayed out of the upper stage nozzle, the flow rate of the gas-liquid mixed liquid is greatly improved compared with that of the previous stage nozzle, and the flow velocity of the gas-liquid mixed liquid is greatly improved when the gas-liquid mixed liquid enters the next stage liquid pipeline with the same size, so that the impact action between the gas jet flow and the gas-liquid mixed liquid jet flow in the next stage double-fluid nozzle is aggravated, and the purposes of generating high-speed jet flow with low energy consumption are achieved.
The reaction in the (N + 1) th-stage double-fluid atomization unit in the device is more violent than that in the Nth-stage double-fluid atomization unit, the gas jet flow and the gas-liquid mixed jet flow are impacted mutually, so that the liquid drop crushing phenomenon is more obvious, and meanwhile, the higher jet flow speed also enables the self-excited oscillation cavity in the (N + 1) th-stage double-fluid atomization unit to have higher vibration frequency and the generated fog drop quality.
The invention can break the surface tension of the liquid by impacting the liquid with gas, so that the liquid is split into liquid drops, thereby achieving the effect of primary atomization. Then, the airflow containing the liquid drops passes through the bionic surface flow channel, as the inner wall of the bionic jet flow channel is provided with a plurality of bionic drag reduction rings, the bionic jet 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 flowing speed of the airflow containing the liquid drops can be further improved. And finally, the ultrahigh-speed gas-liquid mixed liquid continuously impacts the self-oscillation cavity, so that the self-oscillation cavity generates high-frequency oscillation to intensify the secondary atomization of the fogdrops, and the generated continuous jet flow has a smaller fogdrops particle size and a higher fogdrops concentration.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a block diagram of a process flow of the present invention;
FIG. 2 is a schematic diagram of the apparatus of one embodiment of the present invention;
FIG. 3 is a schematic view of a two-fluid self-oscillating atomizing nozzle in the apparatus of the present invention.
Fig. 4 is a half sectional view of a self-oscillating chamber.
Fig. 5 is a half-sectional view of the biomimetic jet flow channel.
In the figure: 1. 4, 6 are heating devices, 2 is a booster pump, 3, 5, 7 are two-fluid self-oscillation atomizing nozzles, and 8, 9, 10 are booster fans.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is to be understood that, unless otherwise expressly stated or limited, the terms "connected" and the like are to be construed broadly, and for example, "connected" may be fixedly connected, detachably connected, or integrally formed; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In a specific embodiment of the invention, a method for synergistically enhancing the atomization performance of two fluids comprises the following process flows as shown in fig. 1, wherein a normal-temperature liquid enters a liquid pipeline, and is heated by a heating device, so that the temperature is rapidly increased to 70-80 ℃, which is beneficial to weakening the acting force between molecules in the liquid, reducing the surface tension and promoting the breakage of liquid drops. And then, the liquid and the gas enter a first-stage atomization device to impact with each other to obtain gas-liquid mixed jet flow, and the gas-liquid mixed jet flow enters a next-stage atomization device to impact with the gas jet flow of the next stage. And repeating the steps in sequence, and finally obtaining high-quality and stable atomized jet at the jet outlet of the last-stage atomization device.
As shown in fig. 2, an apparatus for synergistically enhancing the atomization performance of two fluids is shown for one embodiment of the present invention, which apparatus comprises heating means 1, 4, 6; a booster pump 2; two-fluid self-oscillating nozzles 3, 5, 7; booster fans 8, 9, 10. Normal temperature liquid and gas enter an atomizing device through a liquid pipeline and a gas pipeline respectively, wherein the liquid is heated to 70-80 ℃ through a heating device 1, is pressurized through a booster pump 2 and quickly enters a liquid inlet of an oscillating atomizing nozzle 3; gas is pressurized by a booster fan 10, and is introduced into a gas inlet of the oscillation atomizing nozzle 3 at a high speed to generate first-stage gas-liquid mixed jet, then the jet enters a liquid pipeline of a secondary atomizing device, is heated by a heating device 4 and enters a liquid inlet of the oscillation atomizing nozzle 5, and the gas is pressurized by a booster fan 9 and enters a gas inlet of the oscillation atomizing nozzle 5 to generate secondary gas-liquid mixed jet. The secondary gas-liquid mixed jet flow enters a liquid inlet of the oscillation atomizing nozzle 7 after being heated by the heating device 6, and the gas is pressurized by the booster fan 8 and enters a gas inlet of the oscillation atomizing nozzle 7 to finally obtain the atomized jet flow.
In a preferred embodiment, as shown in fig. 3, the gas-liquid mixing unit is a two-fluid self-oscillation atomizing nozzle, and the two-fluid self-oscillation atomizing nozzle includes a gas flow channel, a liquid flow channel, a tapered gas-liquid mixing chamber, a bionic jet flow channel, and a self-oscillation chamber disposed at a front end of the gas-liquid mixing chamber; the gas feed unit passes through the gas runner and links to each other with the big aperture end of gas-liquid mixing chamber, the liquid feed unit passes through the liquid runner and is connected to the lateral wall of gas-liquid mixing chamber, the bionical efflux runner is connected to the small aperture end of gas-liquid mixing chamber, and the self-excited oscillation chamber is connected and is fixed with gas-liquid mixing chamber wall through many connecting rods, and the self-excited oscillation chamber is located bionical efflux runner's positive front end. And the outlet of the self-oscillation cavity is used as the outlet of the gas-liquid mixing unit. Gas and liquid (fog drops) respectively enter the nozzle from the gas flow channel and the liquid flow channel, impact each other in the gas-liquid mixing cavity, enable liquid drops to generate a primary atomization behavior, then accelerate ejection through the bionic jet flow outlet, impact the self-excited oscillation cavity, generate a secondary atomization behavior, and the bionic jet flow outlet has a drag reduction effect, so that the jet flow speed is greatly improved.
As shown in fig. 4, as a preferred embodiment of the present invention, the self-oscillation cavity is a cylindrical structure, and has a through hole inside, the large-caliber side of the through hole is close to the outlet of the bionic jet flow channel, and the small-caliber side is communicated with the outside; the axis of the self-oscillation cavity coincides with the central axis of the gas-liquid mixing cavity.
As shown in fig. 5, as a preferred embodiment of the present invention, the bionic jet flow channel is a tapered conduit, and the inner wall of the bionic jet flow channel is provided with a plurality of bionic drag reduction rings; the bionic drag reduction ring is an annular surface structure consisting of a plurality of circular bulges. 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 jet 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. The contraction ratio of the bionic jet flow channel is 0.4-0.5, and the central axis of the bionic jet flow channel is superposed with the central axis of the gas-liquid mixing cavity. Because the inner wall of the bionic surface flow channel is provided with the plurality of bionic drag reduction rings, the bionic surface flow channel has obvious drag reduction effect on high-speed moving fluid, and the bionic surface flow channel has a contraction design, so that the flow speed of the air flow containing liquid drops can be further improved.
The working process of the device of the invention is as follows:
the liquid enters a liquid pipeline of a first-stage double-fluid atomization unit, and the liquid flowing through the liquid pipeline is heated by a heating device, so that the temperature of the liquid is raised to 70-80 ℃; the booster pump is utilized to increase the liquid pressure in the flow channel and increase the liquid flow rate;
gas enters a gas flow channel of the first-stage double-fluid atomization unit, and the flow velocity of the gas in the pipeline is improved by using a booster fan; gas and liquid enter the gas-liquid mixing cavity through the gas pipeline and the liquid pipeline respectively, the gas impacts the liquid to destroy the surface tension of the liquid so as to split the liquid into liquid drops, thereby achieving the effect of primary atomization, the airflow containing liquid drops passes through the bionic surface flow channel, and because the inner wall of the bionic surface flow channel is provided with a plurality of bionic drag reduction rings, has drag reduction effect on fluid moving at high speed, and the bionic surface flow channel has a contraction design, can further improve the flow speed of the air flow containing liquid drops, and finally, the high-speed gas-liquid mixed liquid continuously impacts the self-oscillation cavity to enable the self-oscillation cavity to generate high-frequency oscillation to intensify the secondary atomization of the fog drops, so that the generated continuous jet flow has smaller droplet particle size and higher droplet concentration, and the droplets are sprayed out from the outlet of the oscillating atomizing nozzle to be used as the output of a liquid pipeline of a next-stage two-fluid atomizing unit;
in a liquid pipeline of each subsequent stage of the two-fluid atomization unit, a heating device is used for heating the fog drops flowing through, so that the temperature is controlled to be 70-80 ℃; gas enters a gas flow channel of the double-fluid atomization unit, and the flow rate of the gas is controlled by using a booster fan; the gas and the fog drops enter the oscillation atomizing nozzle for atomization, and the fog drops are sprayed out from an outlet of the oscillation atomizing nozzle; the outlet of the oscillating atomizing nozzle of the last stage of the two-fluid atomizing device is communicated with the external space to spray high-speed jet flow.
In the device and the process, because the gas-liquid mixed liquid is sprayed out of the upper-stage nozzle, the flow rate of the gas-liquid mixed liquid is greatly improved compared with that of the previous-stage nozzle, and the flow velocity of the gas-liquid mixed liquid is greatly improved when the gas-liquid mixed liquid enters the next-stage liquid pipeline with the same size, so that the impact action between the gas jet flow and the gas-liquid mixed liquid jet flow in the next-stage double-fluid nozzle is aggravated. The effect of generating high-speed jet flow with lower energy consumption is achieved. In addition, the reaction in the (N + 1) th-stage double-fluid atomization device unit in the device is more violent than that in the Nth stage, the gas jet flow and the gas-liquid mixed jet flow impact each other, so that the liquid drop crushing phenomenon is more obvious, meanwhile, the higher jet flow speed also enables the self-excited oscillation cavity in the (N + 1) th-stage double-fluid atomization device unit to have higher vibration frequency, and the quality of the generated fog drops is higher.
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, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent should be subject to the appended claims.
Claims (4)
1. The device is characterized in that the device is formed by connecting a plurality of stages of two-fluid atomization units in series, each stage of two-fluid atomization unit at least comprises a liquid feeding unit, a gas feeding unit and a gas-liquid mixing unit which is respectively connected with the liquid feeding unit and the gas feeding unit and used for realizing mixing, wherein the output of the gas-liquid mixing unit in the previous stage of two-fluid atomization unit is connected with the input of the liquid feeding unit in the next stage of two-fluid atomization unit; the output of the last stage of double-fluid atomization unit is used as the output of the whole device;
the liquid feed unit comprises a heating device arranged on a liquid feed pipe; the gas feeding unit comprises a booster fan arranged on the gas feeding pipeline;
the gas-liquid mixing unit is a double-fluid self-oscillation atomizing nozzle which comprises a gas flow channel, a liquid flow channel, a gradually-reduced gas-liquid mixing cavity, a bionic jet flow channel and a self-oscillation cavity arranged at the front end of the gas-liquid mixing cavity; the gas feeding unit is connected with the large-caliber end of the gas-liquid mixing cavity through a gas runner, the liquid feeding unit is connected to the side wall of the gas-liquid mixing cavity through a liquid runner, the small-caliber end of the gas-liquid mixing cavity is connected with the bionic jet flow runner, and the self-oscillation cavity is connected and fixed with the wall surface of the gas-liquid mixing cavity through a plurality of connecting rods; the self-oscillation cavity is of a cylindrical structure, a through hole is formed in the self-oscillation cavity, one side with a large caliber of the through hole is close to the outlet of the bionic jet flow channel, and one side with a small caliber is communicated with the outside; the axis of the self-excited oscillation cavity is superposed with the central axis of the gas-liquid mixing cavity;
the bionic jet flow channel is a tapered pipeline, and the inner wall of the bionic jet 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 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 jet 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.
2. The device for synergistically enhancing dual-fluid atomization performance of claim 1, wherein the bionic jet flow channel has a contraction ratio of 0.4 to 0.5, and a central axis of the bionic jet flow channel coincides with a central axis of the gas-liquid mixing chamber.
3. The apparatus for synergistically enhancing dual fluid atomization according to claim 1 wherein the liquid feed conduit of the first stage dual fluid atomization unit is provided with a booster pump and the liquid feed conduits of the remaining stages of dual fluid atomization units are not provided with booster pumps.
4. A method for synergistically enhancing the performance of two-fluid atomization based on the device of claim 1, comprising the steps of:
the liquid enters a liquid pipeline of a first-stage two-fluid atomization unit, and the liquid flowing through the liquid pipeline is heated by a heating device, so that the temperature of the liquid is raised to 70-80 ℃; the booster pump is utilized to improve the liquid pressure in the flow channel and increase the liquid flow rate;
gas enters a gas flow channel of the first-stage double-fluid atomization unit, and the flow velocity of the gas in the pipeline is improved by using a booster fan; gas and liquid enter the gas-liquid mixing cavity through the gas flow passage and the liquid flow passage respectively, the gas impacts the liquid to destroy the surface tension of the liquid so as to split the liquid into liquid drops, thereby achieving the effect of primary atomization, the airflow containing liquid drops passes through the bionic surface flow channel, and because the inner wall of the bionic surface flow channel is provided with a plurality of bionic drag reduction rings, has drag reduction effect on fluid moving at high speed, and the bionic surface flow channel has a contraction design, can further improve the flow speed of the air flow containing liquid drops, and finally, the high-speed gas-liquid mixed liquid continuously impacts the self-oscillation cavity, so that the self-oscillation cavity generates high-frequency oscillation to intensify the turbulence phenomenon of the flow field around the self-oscillation cavity and realize the secondary atomization of the fogdrops, so that the generated continuous jet flow has smaller droplet particle size and higher droplet concentration, and the droplets are sprayed out from the outlet of the oscillating atomizing nozzle to be used as the output of a liquid pipeline of a next-stage two-fluid atomizing unit;
in a liquid pipeline of each subsequent stage of the two-fluid atomization unit, a heating device is used for heating the fog drops flowing through, so that the temperature is controlled to be 70-80 ℃; gas enters a gas flow channel of the double-fluid atomization unit, and the flow rate of the gas is controlled by using a booster fan; the gas and the fog drops enter the oscillation atomizing nozzle for atomization, and the fog drops are sprayed out from an outlet of the oscillation atomizing nozzle; the outlet of the oscillating atomizing nozzle of the last stage of the two-fluid atomizing device is communicated with the external space to spray high-speed jet flow.
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| CN116673145B (en) * | 2023-07-28 | 2023-10-31 | 张家港市晨艺电子有限公司 | Atomizing nozzle for spraying robot |
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| CN103743542A (en) * | 2014-01-21 | 2014-04-23 | 哈尔滨工程大学 | Testing device and method for evaluating resistance reducing effect of porous bionic jet flow surface |
| CN110052340A (en) * | 2019-04-01 | 2019-07-26 | 江苏大学 | A kind of multi-stage ultrasonic atomization jetting device |
| CN111889292A (en) * | 2020-06-24 | 2020-11-06 | 江苏大学 | Air-assisted electrostatic ultrasonic atomization nozzle and method |
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Application publication date: 20210518 Assignee: Ningbo Sidiweno Technology Co.,Ltd. Assignor: JIANG University OF TECHNOLOGY Contract record no.: X2023980035725 Denomination of invention: A device and method for synergistic enhancement of dual fluid atomization performance Granted publication date: 20220712 License type: Common License Record date: 20230520 |
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Application publication date: 20210518 Assignee: Deqing Kelida packaging material technology Co.,Ltd. Assignor: JIANG University OF TECHNOLOGY Contract record no.: X2023980041706 Denomination of invention: A device and method for synergistic enhancement of dual fluid atomization performance Granted publication date: 20220712 License type: Common License Record date: 20230914 |