CN203971652U - A kind of aerosol for reducing PM2.5 in air is except haze device - Google Patents
A kind of aerosol for reducing PM2.5 in air is except haze device Download PDFInfo
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- CN203971652U CN203971652U CN201420323757.XU CN201420323757U CN203971652U CN 203971652 U CN203971652 U CN 203971652U CN 201420323757 U CN201420323757 U CN 201420323757U CN 203971652 U CN203971652 U CN 203971652U
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Abstract
The utility model relate to a kind of to air water spray for reducing the aerosol of PM2.5 concentration in air except haze device.It is day by day serious that ecological deterioration causes PM2.5 to pollute, the physiological structure of human body has determined PM2.5 without any filtration, obstruction ability, it can cause very big injury to respiratory system, cardiovascular system after being inhaled into human body, and common Dispoable medical mouth mask, cotton cloth respirator do not have barrier effect substantially to such the entered lung fine particle of PM2.5 yet.This device is applicable to square, station, school, production office space, residential building, classroom, office, room etc. and locates, reliable for effect, there is no a secondary pollution.It is according to gas assisted atomization jet current principle, water, from this device ejection, can stably form 10 microns of even less droplets of diameter, drop diameter and the same order of magnitude of PM2.5 particle diameter, by diffusion and the wetting action of droplet, can effectively reduce PM2.5 concentration in air.Because droplet is extremely tiny, seldom, during use, ground can ponding, can also auxiliary temperature-reducing for this device water consumption.
Description
Technical field:
The utility model relates to a kind of air dedusting purifier, is that a kind of aerosol for reducing PM2.5 concentration in atmosphere is except haze device specifically.
Background technology:
Haze, is the portmanteau word of mist and haze, is the interactional result of specific weather condition and mankind's activity.The economy of high density population and social activities will inevitably be discharged a large amount of fine particles, once discharge surpasses atmospheric air circulation ability and carrying degree, fine particle concentration will continue to gather, if affected by quiet steady weather etc., very easily occur haze on a large scale.The many areas of China are incorporated to haze using mist and as diastrous weather phenomenon, carry out early-warning and predicting together, are referred to as " haze weather ".Have report to show, in 500 cities of Largest In China, only less than 1% city, reach the air quality standard of world health organisation recommendations, meanwhile, polluting in the world 10 the most serious cities has 7 in China.
PM, English full name is particulate matter (particle), PM2.5 claims again fine particle, refers to that in atmosphere, diameter is less than or equal to the particle of 2.5 microns.Although fine particle is content component seldom in earth atmosphere composition, it has important impact to air quality and visibility etc.Fine particle particle diameter is little, contains a large amount of poisonous and harmful substances and the time of staying in atmosphere is long, fed distance is far away, thereby larger on the impact of health and atmosphere quality.PM2.5 wide material sources, complex genesis, mainly can be divided into nature and mankind's activity and produce two kinds.Fine particles and zodiacal dust that natural source has the flue dust of volcanic eruption, the soil particle thing being blown up and meteor burning to produce move dust etc.; Mankind's activity is mainly from combustion process, such as fossil fuel (coal, gasoline, diesel oil), living beings (stalk, firewood), waste incineration etc.; Other artificial source comprises: dust on the roads, construction airborne dust, industrial dust, kitchen flue gas etc.
PM2.5 can damage respiratory system and cardiovascular system.Weather scientist and medical expert think, the haze weather being caused by fine particle is even larger than sandstorm to the harm of health.10 microns of above particles of particle diameter, can be blocked in outside people's nose; The particle of particle diameter between 2.5 microns to 10 microns, can enter the upper respiratory tract, but part can excrete by sputum etc., also can be stopped by the fine hair of nasal cavity inside in addition, relatively little to human health damage; Particle diameter is difficult for being blocked at the fine particle below 2.5 microns.After being inhaled into human body, can directly enter bronchus, disturb the gas exchange of lung, cause the disease that comprises the aspects such as asthma, bronchitis and cardiovascular disease.These particles can also enter blood by bronchus and alveolar, and pernicious gas wherein, heavy metal etc. are dissolved in blood, larger to the injury of health.The physiological structure of human body has determined PM2.5 without any filtration, obstruction ability.In addition, the height of PM2.5 concentration is the key factor that determines atmospheric visibility, when PM2.5 concentration is high especially, can make sky become sepia, and the scattering delustring of PM2.5 accounts for 80%.
Wear masks and have certain filtration to entering the air of lung, but people cannot wear mouth mask for 24 hours.In addition, Dispoable medical mouth mask does not have the effect of respiratory protection to the such fine particle of PM2.5; Cotton cloth respirator thick although (8～12 layers of thickness), because the space of gauze own is larger, barrier effect is very little especially.
Water, colorless and odorless is nontoxic, has wellability, can effectively purify air, and not have secondary pollution.It has often been said, the sun shines again after the rain, with rainwater dedusting, is a kind of effective method.If utilize water mist dust-removing to fall haze, especially reduce PM2.5 concentration in air, need on the one hand a large amount of water smoke, the diameter of another aspect water smoke must be enough little, will with the particle diameter of PM2.5 at an order of magnitude, that is:, when the diameter of water droplet is less than 10 microns, like this haze could effectively fall.When drop diameter is being less than 10 microns, with respect to common raindrop, can say extremely tinyly, when spraying with this device, ground does not have macroscopical ponding, like this this device can be used in office space, corridor, indoor, and also have the effect of cooling.
The atomization technique of water is a very ripe technology, is widely used in the fields such as coal, oil, metallurgy, aviation, building, chemical industry, machinery, building materials, municipal works, water conservancy and light industry, weaving, fire-fighting.For example the impact jet flow atomization of the secondary cooling section of continuous caster of steel manufacture process is cooling, high-pressure water descaling technique when steel rolling is produced etc.The atomization method of water comprises: the pressure atomization of water, air-assisted atomization, ultrasonic atomization, the modes such as electrostatic atomization and effervescent atomization.
In fact water pressure atomization process is exactly water spraying technique under stress, pressure atomization essence be by high-pressure liquid jet in environment under low pressure, produce thus drop.The inner different whirlpool of pressure atomized fog jet can produce different liquid-drop diameters when jetting nozzle, and it depends on geometry and the outlet size of nozzle, as air circular cone nozzle, rectangular nozzle, square nozzle, flat burner etc.If need the spraying of low discharge, the outlet size of nozzle is very little, and this can increase the possibility of spray nozzle clogging.High pressure water jet, as the rising star in this cyclopean family of spraying technique, develops rapidly for nearly 30 years, applies increasingly extensively, and for example, the giant that our carwash is used is exactly this class mode.The liquid-drop diameter that pressure atomized fog jet produces is conventionally at 100-400 micron, and this mode is limited for reducing PM2.5 effect.
Air-assisted atomization (air atomizing) belongs to medium atomization mode, and it is to using air, as atomizing medium, water is carried out to atomization.Its atomization essence is similar to pressure atomization, is only to have strengthened the effect of air-flow around.It is to utilize at a high speed (tens of rice per second), fluid column or the liquid film of even supersonic air and low speed liquid mutually impact, rub, be broken for fine mist, be that external force (impulsive force, frictional force) is greater than the internal force (surface tension and viscous force) of liquid and broken stream strand or liquid film, even if mist flow is very little, also can produce spraying.Air is power source, by appropriate design air pressure, gas-liquid mass ratio, nozzle, can make the liquid-drop diameter in atomization field very little, and drop diameter is less than 10 microns.
Summarize and say, technical background of the present utility model utilizes air-assisted atomization principle exactly, forms dispersed jet, produce diameter and be less than 10 microns of water smokes, thereby haze falls in dedusting.
Summary of the invention:
According to jet theory, air-assisted atomization jet is followed following relation:
(1) under the condition of certain air pressure, discharge is larger, and the diameter of drop is just larger;
(2) in discharge one regularly, atomizing air can accelerate liquid drop movement, and air pressure is larger, and drop diameter is also just less, that is: liquid-drop diameter reduces along with the increase of auxiliary air pressure;
(3), under the prerequisite that hydraulic pressure, air pressure are fixed, form of nozzle is fixing, the exit velocity of spraying jet, stream range, drop diameter are all determined values.
If obtain being less than the spraying jet water smoke of 10 microns, nozzle, air pressure, gas flow, fluid flow are the most key key elements.Appropriate design form of nozzle, air pressure, gas flow, fluid flow, can be by the diameter control of jet water smoke in the scope that is less than 10 microns, thereby reaches the effect that haze falls in dedusting.A kind of aerosol of the ad hoc meter of the utility model application is except haze device, and the key elements such as the principle of this device, nozzle, air pressure, gas flow, fluid flow are as follows.
1, device operation principle
This device comprises air pump, water tank, air-flow regulation and control control device, liquid stream regulation device, flowmeter, Pressure gauge, nozzle, fan etc.Water in water tank, under the effect of pressure differential, flows to air-assisted atomisation injectors through controlling valve, flowmeter; Air, under the effect of air pump, flows to air-assisted atomisation injectors through controlling valve, flowmeter, and air stream, current converge at nozzle.Under the effect of air immense pressure, the relative current of gas produce higher relative motion, and the kinetic transformation of gas is disturbance momentum, overcomes the capillary constraint of water, cause the unstability of jet and atomization broken, produce aerosol jet.When the key elements such as nozzle, air pressure, gas flow, fluid flow meet certain condition, can make the diameter of water smoke be less than 10 microns.
At hydraulic pressure, air pressure, fix, form of nozzle is fixedly under circumstances, the range of jet spray is conventionally nearer, and the area coverage of water smoke is limited, in order to expand range and the overlay area of water smoke, by fan, water smoke is carried out to secondary drive, can effectively expand the overlay area of water smoke.
This device is applicable to square, station, school, production office space, residential building, classroom, office, room etc. and locates, can 1～n air-assisted atomisation injectors be set according to the difference of usage space size, n value 2～10, when space is used among a small circle, can select portion nozzle in indoor grade.These nozzles keep relation in parallel with water supply loop, confession air circuit.
2, air-assisted atomisation injectors
The diameter of the structure correlation miscarriage unboiled water pearl of nozzle is very crucial.Air-assisted atomisation injectors is by the broken drop of pressurization air later high speed, to transport fluid jet to be ejected in air, when changing into droplet by liquid mist, air can produce shearing force, auxiliary air has aggravated the unstable of liquid film, contributes to the dispersion of drop, and prevents the collision between drop.
In operating process, the quality proportioning of gas and liquid is in some scopes, and nozzle arrangements adjustment can realize in gas-liquid joins and under smaller condition, increase air velocity or inject angle, improves atomization quality.Secondary-atomizing depends primarily on the relative velocity between gas-liquid, and nozzle geometry structure has determined flow field structure, affects to a certain extent atomization.Common air-assisted atomisation injectors comprises at present: round nozzle, flat burner.The two-dimensional axial symmetric jet of round nozzle ejection, but projected area is limited, be unfavorable for coordinating with secondary secondary drive fan, allow spraying jet further spread, therefore the design preferentially selects platypelloid type air-assisted atomisation injectors, the jet of its ejection is rectangular, three-dimensional jet, contributes to the secondary diffusion of mist pearl.
3, air pressure
The effect of air is as Alevaire and driving force, and air pressure is the key factor that affects drop diameter, stream distance, water smoke diameter.Gas affects the external force of liquid and the dynamic balance of self inertia power with respect to the relative velocity of liquid.It is disturbance momentum that higher relative motion makes gas kinetic transformation, overcomes the constraint of surface tension of liquid, causes the unstability of jet with broken, plays the effect that jet breaks of accelerating.Under the certain condition of discharge, liquid-drop diameter reduces along with the increase of auxiliary air pressure.The utility model is by the regulation and control of regulator, and air pressure change scope is: 0.20MPa～0.45MPa.
4, gas flow, fluid flow
The extra kinetic energy that when gas need to provide liquid mist to change into tiny drop, newly-increased surface area needs.The kinetic energy that gas flow, fluid flow impact are provided by gas atomization is easier to meet kinetic energy needs under the gas-liquid flow-rate ratio larger.Drop is subject to the effect of gravity and two external force of quality drag force in motion process, and wherein quality drag force is because the speed difference between gas phase and drop produces.Gas velocity is larger, and quality drag force is also just larger, thereby causes the acceleration of liquid drop movement.Conventionally the increase of gas flow rate makes flow resistance be quadratic relationship to increase progressively, gas flow rate (flow) be increased to further increase progressively to a certain extent need to be larger power source, so air-assisted atomization jet must be found preferably gas flow, fluid flow.
The utility model, by adjusting devices such as flowmeter, control valves, adopts platypelloid type air-assisted atomisation injectors, and air pressure change scope is: 0.20MPa～0.45MPa; Air mass flow changes in 6～36l/min (0.1-0.6l/s) scope, and the discharge of single-nozzle changes in 0.01～0.08l/min (0.6～4.8l/h) scope; Can guarantee that drop diameter is less than 10 microns.And under identical hydraulic condition, air pressure is higher, the diameter of water droplet is just less.
By diffusion and the wetting action of droplet, can effectively reduce PM2.5 concentration in air.Because droplet is extremely tiny, seldom, during use, ground can ponding, can also auxiliary temperature-reducing for this device water consumption.
Accompanying drawing explanation:
Accompanying drawing is for reducing the aerosol of PM in air 2.5, to remove the schematic diagram of haze device; In figure:
1-air pump; 2-control valve; 3; Ball valve; 4, flowmeter; 5-Pressure gauge; 6-water tank;
The flat air-assisted atomisation injectors of 7-(1～n); 8-secondary drive fan;
The specific embodiment:
Below in conjunction with accompanying drawing, provide specific embodiment of the utility model.
This device comprises air pump, water tank, air-flow regulation and control control device, liquid stream regulation device, flowmeter, Pressure gauge, nozzle, fan, 1～n air-assisted atomisation injectors.Water in water tank is under the effect of pressure differential, through adjusting ball valve, flowmeter, pressure surface low to flow to flat air-assisted atomisation injectors; Pressure-air, under the effect of air pump, flows to flat air-assisted atomisation injectors through control valve, ball valve, flowmeter, Pressure gauge, and current, air-flow converge in flat air-assisted atomisation injectors.
Under the effect of pressure-air, the relative current of gas produce higher relative motion, the kinetic transformation of gas is disturbance momentum, overcome the capillary constraint of water, when atomizing water into droplet, air can produce shearing force, cause unstability and the atomization of current broken, thereby go out high-pressure aerial fog jet from nozzle ejection.In order to expand range and the overlay area of water smoke, by fan, water smoke is carried out to secondary drive, effectively expand the overlay area of water smoke.
This device arranges 1～n air-assisted atomisation injectors according to the difference of usage space size, and n value 2～10, keeps relation in parallel for air circuit at these nozzles and water supply loop, in indoor grade, when space is used among a small circle, can select portion nozzle.
This device is by the pressure regulation of flowmeter, Pressure gauge, control valve, ball valve etc., but the excursion of air pressure is: 0.20MPa～0.45MPa; Make the discharge of single-nozzle at 0.6～4.8l/h (0.01～0.08l/min); Air mass flow, at 0.1-0.6l/s (6～36l/min), can guarantee that the diameter of the spraying jet globule is less than 10 microns, by diffusion and the wetting action of droplet, can effectively reduce PM2.5 concentration in air.Because droplet is extremely tiny, seldom, during use, ground can ponding, can also auxiliary temperature-reducing for this device water consumption.
Claims (5)
1. the aerosol for reducing PM2.5 in air is except haze device, this device comprises air pump, water tank, air-flow regulation and control control device, liquid stream regulation device, flowmeter, Pressure gauge, nozzle, fan, 1～n air-assisted atomisation injectors, it is characterized in that: the water in water tank is under the effect of pressure differential, through controlling valve, flowmeter flows to air-assisted atomisation injectors, air is under the effect of air pump, through controlling valve, flowmeter flows to air-assisted atomisation injectors, current air-flow converges at gas assisted atomization nozzle, and under the effect of air pressure, the relative current of gas produce higher relative motion, cause unstability and the atomization of jet broken, produce jet spray, by fan, water smoke is carried out to secondary drive, expand water smoke overlay area.
2. aerosol as claimed in claim 1, except haze device, is characterized in that: the nozzle of this device is selected flat air-assisted atomisation injectors.
3. aerosol as claimed in claim 1, except haze device, is characterized in that: this device is through the regulation and control of gas pressure regulating apparatus, and air pressure change scope is: 0.20MPa～0.45MPa.
4. aerosol as claimed in claim 1 is except haze device, it is characterized in that: this device is controlled through liquid squeezer, the discharge of single-nozzle is changed in 0.01～0.08l/min (0.6～4.8l/h) scope, and air mass flow changes in 6～36l/min (0.1-0.6l/s) scope.
5. aerosol as claimed in claim 1, except haze device, is characterized in that: this device can comprise 1～n air-assisted atomisation injectors, n value 2～10, and these nozzles keep relation in parallel with water supply loop, confession air circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420323757.XU CN203971652U (en) | 2014-06-13 | 2014-06-13 | A kind of aerosol for reducing PM2.5 in air is except haze device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420323757.XU CN203971652U (en) | 2014-06-13 | 2014-06-13 | A kind of aerosol for reducing PM2.5 in air is except haze device |
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| CN203971652U true CN203971652U (en) | 2014-12-03 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107715617A (en) * | 2017-11-14 | 2018-02-23 | 湘潭大学 | A kind of fine particle cleaning system and method suitable for low temperature environment |
| CN107754148A (en) * | 2017-12-08 | 2018-03-06 | 中国空气动力研究与发展中心高速空气动力研究所 | Supersonic jet fire extinguishing component and fire extinguisher |
| CN108722076A (en) * | 2018-06-14 | 2018-11-02 | 中国空气动力研究与发展中心计算空气动力研究所 | A kind of multiple dimensioned spray atomizing removes haze method |
| CN108744800A (en) * | 2018-06-14 | 2018-11-06 | 中国空气动力研究与发展中心计算空气动力研究所 | A kind of spray removes haze method |
| CN110651773A (en) * | 2019-09-16 | 2020-01-07 | 江苏大学 | Variable flow air-assisted electrostatic spraying system |
| CN112107947A (en) * | 2020-09-15 | 2020-12-22 | 周清峰 | Management system and method for treating air suspended matters |
-
2014
- 2014-06-13 CN CN201420323757.XU patent/CN203971652U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107715617A (en) * | 2017-11-14 | 2018-02-23 | 湘潭大学 | A kind of fine particle cleaning system and method suitable for low temperature environment |
| CN107754148A (en) * | 2017-12-08 | 2018-03-06 | 中国空气动力研究与发展中心高速空气动力研究所 | Supersonic jet fire extinguishing component and fire extinguisher |
| CN108722076A (en) * | 2018-06-14 | 2018-11-02 | 中国空气动力研究与发展中心计算空气动力研究所 | A kind of multiple dimensioned spray atomizing removes haze method |
| CN108744800A (en) * | 2018-06-14 | 2018-11-06 | 中国空气动力研究与发展中心计算空气动力研究所 | A kind of spray removes haze method |
| CN110651773A (en) * | 2019-09-16 | 2020-01-07 | 江苏大学 | Variable flow air-assisted electrostatic spraying system |
| CN112107947A (en) * | 2020-09-15 | 2020-12-22 | 周清峰 | Management system and method for treating air suspended matters |
| CN112107947B (en) * | 2020-09-15 | 2022-06-07 | 周清峰 | Management system and method for treating air suspended matters |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Fu Wensheng Document name: Notification of Termination of Patent Right |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 Termination date: 20150613 |
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| EXPY | Termination of patent right or utility model |