CN100411987C - Submicron level solid sodium chloride aerosol preparing process and apparatus - Google Patents
Submicron level solid sodium chloride aerosol preparing process and apparatus Download PDFInfo
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- CN100411987C CN100411987C CNB2006101133010A CN200610113301A CN100411987C CN 100411987 C CN100411987 C CN 100411987C CN B2006101133010 A CNB2006101133010 A CN B2006101133010A CN 200610113301 A CN200610113301 A CN 200610113301A CN 100411987 C CN100411987 C CN 100411987C
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Abstract
The present invention is submicron level solid sodium chloride aerosol preparing process and apparatus. The apparatus includes three parts: a sprayer, a striker and a mixing drier. The preparation process includes the steps of: atomizing water solution of sodium chloride in certain concentration with a sprayer, striking with a striker to eliminate large fog drop, and evaporating water of fog drop in a mixing drier to obtain the submicron level solid sodium chloride aerosol. By means of regulating the aperture of the conic hole, the distance between the nozzle outlet and the striking board, spraying pressure and other parameters, the present invention can produce sodium chloride aerosol of mid diameter of 0.075+/-0.01 micron, geometrical standard deviation smaller than 1.85, mass concentration smaller than 20 mg/cu m and relative humidity lower than 40 % for equipment detection and experiment research.
Description
Technical field
The present invention relates to a kind of clean compressed air that utilizes with the method and apparatus of certain density solution atomization, relate in particular to a kind of method for generation and device sodium chloride solution atomizing becoming submicron order aerosol for the polydisperse aerosol of definite size distribution.
Background technology
Aerosol is a liquid or solid with diameter is the dispersion system that the particles dispersed of 0.002～100 μ m forms in gaseous media.It is an important aerosol technology that aerosol stable and that meet certain grain size distribution takes place, and it is mainly used in the calibration measurements instrument, carries out aerosol experimental study and research and Application Areass such as development﹠ testing purifying air and sample devices.The general particle diameter of pressing is divided, and aerosol mainly contains micron order and submicron two classes: the micron order aerosol is often referred to most of aerocolloidal particle diameters greater than 1 μ m, and the submicron order aerosol refers to that then most of aerocolloidal particle diameters are less than 1 μ m.
Raising along with progress of science and technology and people's living standard, purification efficiency performance requriements for various types of filtration material and filter plant has all had significantly lifting, is also proposing strict more requirement aspect aerocolloidal size distribution of test and the concentration in the corresponding with it domestic and international examination criteria.Polystyrene sphere and two kinds of methods of evaporative condenser dioctyl sebacate of spraying standard are mainly used in the laboratory at present.Because well behaved polystyrene sphere costs an arm and a leg, apparatus for evaporation condensation structure and complicated operation, cost an arm and a leg, be difficult to reach the demand of science application and production testing, grasp various detection method and proofing units with modern technique in order to study, exploitation submicron order aerosol method for generation and aerosol dispenser become one of the important content in aerosol and clean technology field.
Summary of the invention
The purpose of this invention is to provide a kind of submicron level solid sodium chloride aerosol preparing process, make it simple to operate, and can produce the particles dispersed degree better, size distribution and the adjustable submicron order aerosol of concentration method for generation; Provide a kind of simple in structure simultaneously, grasp easy to maintenance, the low sodium chloride aerosol generating unit of investment and maintenance cost.
Technical scheme of the present invention is:
A kind of submicron level solid sodium chloride aerosol preparing process is characterized in that this method carries out as follows:
1) making pressure is the shower nozzle of the clean compressed air of 0.1MPa～0.4MPa by atomizer, with aqueous solution sucking-off in the spray tank and atomizing; The concentration of described sodium chloride aqueous solution is 0.001%～3%;
2) after atomizing, the gas that has sodium-chlor water smoke through the tapered tube high-speed jet to the crash panel of striker;
3) in knockout process, by the jet pipe of adjustment band tapered hole and the distance between the crash panel, dense fog in the gas is dropped under the inertia effect to settle down, little droplet then enters in the mixing drier with gas, and the nozzle exit of described band tapered hole and the distance between the crash panel are regulated in 1mm～50mm scope;
4) gas that contains little droplet mixes with the uncontaminated air of heat treated in mixing drier with after filtration, makes the moisture evaporation of droplet, the final submicron order polydispersion solid sodium chloride aerosol with definite size distribution that forms.
A kind of submicron order solid sodium chloride aerosol generating unit that the present invention also provides, it is characterized in that: this device comprises with the solution sucking-off and with the atomizer of its atomizing, striker and mixing drier, described atomizer contains compressed air inlet pipe road, nozzle and sleeve; Described striker is by the bump chamber, and the jet pipe and the crash panel of band tapered hole are formed, and crash panel and jet pipe are separately positioned on the both sides of described bump chamber; Described mixing drier comprises air inlet section, combination drying section and outlet section; Described atomizer sleeve is connected by pipeline with an end of the jet pipe of band tapered hole, the top of described bump chamber is connected with the air inlet section of mixing drier with the aerosol inlet mouth by pipeline, is respectively equipped with the inlet mouth of clean dry air on described air inlet section and mixing section.
In order to make mixing more even, another technical characterictic of the present invention is to be provided with a taper air diffuser in the combination drying section of mixing tank.
Technical characterictic of the present invention also is: the jet pipe of described band tapered hole is made of interior pipe two portions of outer tube and band taper hole, and interior pipe and outer tube are by being threaded, and described outer tube is fixed on and clashes on the chamber; Described crash panel is connected with the bump chamber by screw thread.
Another technology is characterized in that: the inlet mouth of described clean dry air and aerosol inlet mouth arranged tangential; The injection diameter of described nozzle is 0.1mm～2mm; The outlet aperture of taper hole is Ф 0.5mm～Ф 5mm.
The present invention compared with prior art, have the following advantages and the high-lighting effect: aperture and the tapered tube of the present invention by regulating the outlet of striker tapered tube is exported to distance between the crash panel, the aperture of mister head, the parameters such as spray pressure of clean compressed air, can produce the counting median diameter is 0.075 ± 0.01 μ m, geometric standard deviation is less than 1.85, and mass concentration is less than 20mg/m
3, relative humidity is less than 40% sodium chloride aerosol (being better than the generation aerosol parameter that domestic and international relevant criterion requires), can satisfy fully that various device detects and the needs of experimental study.The present invention is simple in structure, and is easy to operate, safeguards that simply, investment and maintenance cost are low.
Description of drawings
Fig. 1 is the structural representation of the embodiment of submicron order solid sodium chloride aerosol generating unit provided by the present invention.
Fig. 2 is the sectional view of mixing drier air inlet section.
Fig. 3 is solid sodium chloride aerosol size distribution and concentration.
Among the figure: the 1-nozzle; The 2-atomizer; The 3-sleeve; The 4-intake ducting; 5-pressurized air; The jet pipe of 6-band tapered hole; The interior pipe of 7-band taper hole; The 8-outer tube; The 9-striker; 10-clashes into chamber; The 11-crash panel; 12-air inlet section; The 13-air diffuser; The 14-mixing drier; 15-combination drying section; The 16-outlet section; 17-uncontaminated air inlet mouth; 18-aerosol inlet mouth.
Embodiment
Below in conjunction with accompanying drawing principle of the present invention, structure, working process and embodiment are further described.
Fig. 1 is the structural representation of the embodiment of submicron order solid sodium chloride aerosol generating unit provided by the present invention.This device comprises with the solution sucking-off and with the atomizer 2 of its atomizing, striker 9 and mixing drier 14 3 parts; Described atomizer 2 contains compressed air inlet pipe road 4, nozzle 1 and sleeve 3, and the injection diameter of described nozzle is generally 0.1mm～2mm; Described striker 9 is by bump chamber 10, and the jet pipe 6 of band tapered hole and crash panel 11 are formed, and crash panel 11 and jet pipe 6 are separately positioned on the both sides of described bump chamber 10; The jet pipe 6 of band tapered hole is made of interior pipe 7 two portions of outer tube 8 and band taper hole, and the outlet aperture of taper hole is Ф 0.5mm～5mm.In pipe and outer tube by being threaded, outer tube is fixed on and clashes on the chamber; Crash panel is connected with the bump chamber by screw thread.The interior pipe of band taper hole can left and right adjusting by screw thread, crash panel also can left and right adjusting by screw thread, described mixing drier comprises air inlet section 12, combination drying section 15 and outlet section 16, is respectively equipped with the inlet mouth 17 of uncontaminated air on described air inlet section and mixing section; In order to make mixing more even, the present invention also is provided with a taper air diffuser 13 in the combination drying section of mixing tank.Sleeve 3 is connected by pipeline with an end of the jet pipe 6 of band taper hole, and the top of described bump chamber 10 is connected with the air inlet section 12 of mixing drier with aerosol inlet mouth 18 by pipeline.
Working process of the present invention is as follows: making pressure is the shower nozzle of the clean compressed air of 0.1MPa～0.4MPa by atomizer, with aqueous solution sucking-off in the spray tank and atomizing; The concentration of described sodium chloride aqueous solution is 0.001%～3%; After atomizing, the jet pipe high-speed jet of gas through being with taper hole that has sodium-chlor water smoke is to the crash panel of striker; In knockout process, by the jet pipe of adjustment band taper hole and the distance between the crash panel, (nozzle exit and the distance between the crash panel of band taper hole are regulated in 1mm～50mm scope); Dense fog in the gas is dropped under the inertia effect to settle down, little droplet then enters in the mixing drier with gas, the gas that contains little droplet mixes with the uncontaminated air of heat treated in mixing drier with after filtration, make the moisture evaporation of droplet, the final submicron order polydispersion solid sodium chloride aerosol that forms with definite size distribution.
Claims (6)
1. submicron order solid sodium chloride aerosol generating unit, it is characterized in that: this device comprises with the solution sucking-off and with the atomizer (2) of its atomizing, striker (9) and mixing drier (14), described atomizer contain compressed air inlet pipe road (4), nozzle (1) and sleeve (3); Described striker is by bump chamber (10), and the jet pipe (6) and the crash panel (11) of band tapered hole are formed, and the jet pipe of crash panel and band tapered hole is separately positioned on the both sides of described bump chamber; Described mixing drier comprises air inlet section (12), combination drying section (15) and outlet section (16); Described sleeve is connected by pipeline with an end of the jet pipe of band tapered hole, the top of described bump chamber is connected with the air inlet section of mixing drier with aerosol inlet mouth (18) by pipeline, is respectively equipped with the inlet mouth (17) of clean dry air on described air inlet section and mixing section.
2. according to the described submicron order aerosol of claim 1 generating unit, it is characterized in that: in the combination drying section of described mixing tank, be provided with a taper air diffuser (13).
3. according to the described submicron order aerosol of claim 1 generating unit, it is characterized in that: the jet pipe of described band tapered hole is made of interior pipe (7) two portions of outer tube (8) and band taper hole, in pipe and outer tube by being threaded, described outer tube is fixed on and clashes on the chamber; Described crash panel is connected with the bump chamber by screw thread.
4. according to claim 1,2 or 3 described submicron order aerosol generating units, it is characterized in that: the inlet mouth of described clean dry air and aerosol inlet mouth arranged tangential.
5. according to the described submicron order aerosol of claim 1 generating unit, it is characterized in that: the injection diameter of described nozzle is 0.1mm～2mm; The tapered tube outlet aperture is Φ 0.5mm～Φ 5mm.
6. submicron level solid sodium chloride aerosol preparing process is characterized in that carrying out that this method is carried out as follows in the device of claim 1:
1) making pressure is the shower nozzle of the clean compressed air of 0.1MPa～0.4MPa by atomizer, with aqueous solution sucking-off in the spray tank and atomizing; The concentration of described sodium chloride aqueous solution is 0.001%～3%;
2) after atomizing, the gas that has sodium-chlor water smoke through the tapered tube high-speed jet to the crash panel of striker;
3) in knockout process, by adjusting the distance between tapered tube and the crash panel, dense fog in the gas is dropped under the inertia effect settle down, little droplet then enters in the mixing drier with gas, and the distance between described tapered tube outlet and the crash panel is regulated in 1mm～50mm scope;
4) gas that contains little droplet mixes with the uncontaminated air of heat treated in mixing drier with after filtration, makes the moisture evaporation of droplet, the final submicron order polydispersion solid sodium chloride aerosol with definite size distribution that forms.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101133010A CN100411987C (en) | 2006-09-22 | 2006-09-22 | Submicron level solid sodium chloride aerosol preparing process and apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101133010A CN100411987C (en) | 2006-09-22 | 2006-09-22 | Submicron level solid sodium chloride aerosol preparing process and apparatus |
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| CN1974387A CN1974387A (en) | 2007-06-06 |
| CN100411987C true CN100411987C (en) | 2008-08-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101711935B (en) * | 2009-10-19 | 2011-12-07 | 中国人民解放军军事医学科学院卫生装备研究所 | High-efficiency air filtering unit |
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| CN101570336B (en) * | 2009-06-05 | 2011-08-17 | 陕西工业技术研究院 | Process for continuously producing solid salt from salt solution |
| CN105372164B (en) * | 2015-12-11 | 2018-02-27 | 天津开发区合普工贸有限公司 | From dilution aerosol screening caliberating device |
| TWI644091B (en) * | 2017-12-01 | 2018-12-11 | 陳志傑 | Aerosol generating device for calibrating component concentration of aerosol |
| CN111482294B (en) * | 2020-04-27 | 2021-07-06 | 青岛众瑞智能仪器股份有限公司 | Atomizer and aerosol particle filter detection device |
| TWI777180B (en) * | 2020-06-22 | 2022-09-11 | 章嘉企業有限公司 | Adjustable system for calibrating component concentration of aerosol |
| CN112557108B (en) * | 2020-11-13 | 2022-04-29 | 山东大学 | Jet type ocean spray aerosol simulation generation device and method |
| CN114176075B (en) * | 2021-11-20 | 2023-06-23 | 青岛广志智翔科技有限公司 | Preparation method, disinfection method, preparation system and disinfection system of aerosol for disinfection |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1036455A (en) * | 1988-09-24 | 1989-10-18 | 中国预防医学科学院环境卫生与卫生工程研究所 | Big extra small single particle genetic method of flow and device |
| CN1194588A (en) * | 1995-03-22 | 1998-09-30 | 迈克尔·博诺 | Improved nebulizer and inhalation device containing same |
| CN200949051Y (en) * | 2006-09-22 | 2007-09-19 | 清华大学 | Sub-micron grade solid sodium chloride aerosol generating device |
-
2006
- 2006-09-22 CN CNB2006101133010A patent/CN100411987C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1036455A (en) * | 1988-09-24 | 1989-10-18 | 中国预防医学科学院环境卫生与卫生工程研究所 | Big extra small single particle genetic method of flow and device |
| CN1194588A (en) * | 1995-03-22 | 1998-09-30 | 迈克尔·博诺 | Improved nebulizer and inhalation device containing same |
| CN200949051Y (en) * | 2006-09-22 | 2007-09-19 | 清华大学 | Sub-micron grade solid sodium chloride aerosol generating device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101711935B (en) * | 2009-10-19 | 2011-12-07 | 中国人民解放军军事医学科学院卫生装备研究所 | High-efficiency air filtering unit |
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| CN1974387A (en) | 2007-06-06 |
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