CN208786188U - A kind of dust generating system - Google Patents
A kind of dust generating system Download PDFInfo
- Publication number
- CN208786188U CN208786188U CN201820596112.1U CN201820596112U CN208786188U CN 208786188 U CN208786188 U CN 208786188U CN 201820596112 U CN201820596112 U CN 201820596112U CN 208786188 U CN208786188 U CN 208786188U
- Authority
- CN
- China
- Prior art keywords
- dust
- aerosol
- filter
- generating system
- case
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model discloses a kind of dust generating systems.The dust generating system includes gas source generator, filter, aerosol generator, first flow controller and the mixing case for being sequentially connected and being connected to.Wherein, gas source generator is used to convey the compressed gas with steady pressure, and filter is used to dispel the bulky grain suspended particles in compressed air, and aerosol generator is for generating the stable aerosol of concentration.The utility model can produce a kind of uniformly mixed, constant concentration aerosol dust atmosphere, so that the instruments such as dust instrument are researched and developed and magnitude tracing in the future, it is ensured that the true and accurate of data simultaneously provides technical support.
Description
Technical field
The utility model relates to gauge check technical field, in particular to a kind of dust generating system.
Background technique
Aerosol is a kind of to be dispersed by solid or liquid fine particle and be suspended in the aqueous colloidal dispersion formed in gas medium
System, also known as gas diffuser system.Its dispersed phase is solid or liquid fine particle, and size is 0.001~100 micron, and dispersion is situated between
Matter is gas.
Dust instrument is the instrument for measuring the aerial particulate mass concentration that suspends, and working principle includes light scattering
Principle, β ray principle and concussion balance principle, the research and development core of these three technologies require a uniformly mixed, constant concentration
Aerosol dust atmosphere.But due to the physical characteristic of aerosol, can only dynamically it occur in real time, unlike gas or liquid
Bottled gas or liquid standard substance is recycled to carry out transport and transmission of quantity value after being capable of forming constant phase state like that.
Therefore, in the prior art, during producing dust instrument, different manufacturers to dust instrument demarcate variable when,
And when examining and determine dust instrument, based on often different and unstable (mixing of aerosol state in dust atmosphere
The uniformity is different, concentration is unstable), thus, the dust instrument that different manufacturers are produced, the basic data for measuring reference is different,
It eventually leads to the detection data that the dust instrument that different manufacturers produce obtains under identical environment to differ greatly, causes detection data mixed
Disorderly.
Moreover, in the prior art, without a kind of for generating aerosol dust atmosphere (especially low concentration aerosol dust
Environment) device, thus, when examining and determine dust instrument, the dust instrument for environmental monitoring can not be examined and determine.
Therefore, a kind of device that can produce uniformly mixed, constant concentration aerosol dust atmosphere how is designed, is
Those skilled in the art's technical problem urgently to be resolved at present.
Utility model content
In view of this, a kind of mixing can be produced the purpose of this utility model is to provide a kind of dust generating system
Uniformly, the dust atmosphere of constant concentration, so that the instruments such as dust instrument are researched and developed and magnitude tracing in the future, it is ensured that the true standard of data
Really and provide technical support.
To achieve the above object, the utility model provides the following technical solutions:
A kind of dust generating system, comprising:
For conveying the gas source generator of the compressed gas with steady pressure；
For dispelling the filter of bulky grain suspended particles in compressed air；
For generating the aerosol generator of the stable aerosol of concentration；
First flow controller；
Mix case；
The gas source generator, the filter, the aerosol generator, the first flow controller and described
Case is mixed to be sequentially connected and be connected to.
It preferably, further include that setting is molten for dispelling the gas before the mixing case in above-mentioned dust generating system
The drier of moisture in glue.
It preferably, further include the second with aerosol generator parallel arrangement in above-mentioned dust generating system
Amount controller.
It preferably, further include the clarifier with the outlet connection for mixing case in above-mentioned dust generating system.
Preferably, in above-mentioned dust generating system, the clarifier includes clarifier shell and aseptic net
Change core, the Purified core is removably disposed in the clarifier shell.
Preferably, in above-mentioned dust generating system, the filter includes the filter of filter housing and filtration
Core, the filter core are removably disposed in the filter housing；
And/or the drier is the drying tube added with air guide network management；
And/or the cabinet material for mixing case is polytetrafluoroethylene (PTFE).
It can be seen from the above technical proposal that mixed in case in dust generating system provided by the utility model, due to
Dust is in the environment of a relative closure, also, aerosol generating device hair dust concentration stabilization/flow is constant, thus, it is possible to
Hair dust concentration and flowed fluctuation is avoided to have an impact the dust concentration mixed in case, so that the dust mixed in case is easy to reach
A kind of uniformly mixed, constant concentration metastable state, researches and develops for instruments such as dust instruments and uses with magnitude tracing in the future,
Ensure the true and accurate of data and technical support is provided, is also convenient for different manufacturers and unifies examination criteria.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of dust generating system provided by the embodiment of the utility model.
Wherein:
1- gas source generator, 2- filter, 3- aerosol generator, 4- first flow controller, 5- second flow control
Device processed, 6- drier, 7- mix case.
Specific embodiment
The utility model discloses a kind of dust generating systems, can produce a kind of uniformly mixed, constant concentration powder
Dirt dust atmosphere, so that the instruments such as dust instrument are researched and developed and magnitude tracing in the future, it is ensured that the true and accurate of data simultaneously provides technology
It supports.
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Referring to Fig. 1, Fig. 1 is the structural schematic diagram of dust generating system provided by the embodiment of the utility model.
Dust generating system provided by the embodiment of the utility model, including be sequentially connected and be connected to gas source generator 1,
Filter 2, aerosol generator 3, first flow controller 4 and mixing case 7.Wherein, gas source generator 1 has for conveying
The compressed gas of steady pressure, filter 2 are used to generate aerosol for dispelling suspended particles in gas, aerosol generator 3,
First flow controller 4 is used to control the aerosol flow in input mixing case 7, mixes case 7 as dust and provides a kind of stabilization
Environment.
Dust generating system provided by the embodiment of the utility model, when in use, by dust occurring principle, gas source is filled
Set 1 produce with certain pressure compressed gas (generally outlet pressure be 0.8MPa air), which enters filtering
To dispel the intracorporal suspended particles of gas in device 2, the clean gas with certain pressure is obtained；Then, which enters gas
In colloidal sol generator 3, the constant aerosol of outflow is generated；Finally, aerosol forms the dust of even concentration in mixing case 7
Environment, so that metering uses.
Wherein, it is mixing in case 7, since dust is in the environment of a relative closure, also, aerosol generating device is sent out
Dust concentration stabilization/flow is constant, thus, it is possible to which hair dust concentration and flowed fluctuation is avoided to generate shadow to the dust concentration mixed in case
It rings, is easy to reach a kind of uniformly mixed, constant concentration metastable state so that mixing the dust in case 7.
To as it can be seen that dust generating system provided by the embodiment of the utility model, can produce a kind of metastable
Dust atmosphere is uniformly mixed, constant concentration, so that the instruments such as dust instrument are researched and developed and magnitude tracing in the future, it is ensured that data
True and accurate simultaneously provides technical support, is also convenient for different manufacturers and unifies examination criteria.
When being examined and determine using the above dust generating system dust instrument, the dust calibration method of use includes
Following steps:
Step 1 starts gas source generator 1 and aerosol generator 3；
Step 2, mix case 7 in dust state it is up to standard when, using filter membrane weight method to mix case 7 concentration determine
Value；
Step 3, dust instrument sample, in sampling process, it is ensured that sample flow is less than the aerosol in aerosol generator 3
Flow is generated, guarantees to remain slight positive pressure state in mixing case 7.
Specifically, in two the above-mentioned dust instrument calibration method the step of, judge whether the dust state mixed in case 7 is up to standard
When, concrete operations include:
In system after stability of flow, is first mixing one middle position progress multiple repairing weld detection of selection in case 7 and recording
Data, evaluation repeatability, when repeatability be less than preset value (such as 5%) when think mix case 7 in dust concentration
It is constant；
Multiple and different location points are chosen from the top for mixing case 7 again, each location point measures repeatedly and calculates separately it and puts down
Mean value, each average value are respectively then the dust concentration value of its corresponding location point calculates the dust concentration of multiple location points
The repeatability of value, when repeatability is less than preset value (such as 5%), it is believed that mix dust in case 7 by evenly mixing.
Specifically, it in two the above-mentioned dust instrument calibration method the step of, is calculated and is mixed in case 7 using filter membrane weight method
Dust concentration, this numerical value be standard value.
Further, it should be noted that first to observe filter 2, drying respectively before stating dust instrument calibration method on the implementation
Device 6, clarifier 8, it is therefore an objective to: whether the easily-consumed products of confirmation filter 2 need replacing, it is ensured that are filtered out by filter 2 clean
Net air meets requirement, in order to avoid influence the using effect of instrument；Whether the easily-consumed products of confirmation drier 6 need replacing, really
The drying efficiency for protecting drier 6 meets requirement；Whether the easily-consumed products in confirmation clarifier 8 need replacing, in order to avoid influence net
Change effect, while environmental pollution being avoided to cause damages staff.It is then turned on gas source generator 1, until pressure is stablized
And when reaching 3 required pressure value (such as 0.8MPa) of aerosol generator, it is connected to whole system pipeline.
Certainly, the later period also suggests carrying out routine observation to filter 2, drier 6, clarifier 8, to renew in time.
It can be seen from the above technical proposal that the dust instrument calibration method, can pass through the mixing in dust generating system
Case 7 establishes the aerosol environment of uniformly mixed, constant concentration a metastable state, and to the dust ring mixed in case 7
Border concentration carries out definite value, is sampled calibrating to dust instrument, is finally reached to research and develop convenient for instruments such as dust instruments and trace back with magnitude in the future
Source ensures data true and accurate and provides the purpose of technical support.
In order to further optimize the above technical scheme, it in dust generating system provided by the embodiment of the utility model, also sets
It is equipped with the second flow controller 5 in parallel with aerosol generator 3.Specifically, as shown in Figure 1, first flow controller 4 and gas
Colloidal sol generator 3 connects and the rear end of aerosol generator 3 is arranged in, and constitutes flux controllable aerosol supply line；Second
One end of flow controller 5 connects the connecting pipe between filter 2 and aerosol generator 3 and communicates therewith, second flow
The other end of controller 5 connect and communicates therewith with the inlet for mixing case 7, i.e., second flow controller 5 and aerosol occur
Device 3 is in parallel, constitutes flux controllable clean air supply line.Preferably, first flow controller 4 and second flow controller
5 be the flow controller that class of accuracy is 1 grade.
To when needing the dust concentration adjusted mix in case 7 to measure again, in above-mentioned dust instrument calibration method also
Including step 4: by adjusting the flow that first flow controller 4 is aerosol in changeable aerosol supply line, passing through tune
Saving second flow controller 5 is the clean air flow in changeable clean air supply line.To by the two flow
The adjusting of ratio, to adjust the aerosol concentration mixed in case 7, then return step two in above-mentioned dust instrument calibration method and
Step 3.Wherein, flow proportional is bigger between first flow controller 4 and second flow controller 5, mixes and obtains in case 7
The aerosol ambient concentration obtained is bigger, otherwise smaller.
When needing the dust concentration repeatedly adjusted mix in case 7 to take multiple measurements, two are repeated the above steps to step
Rapid four.
It is illustrated below with primary specific dust instrument verification process:
In detection process, first first flow controller 4 and second flow controller 5 are arranged to a ratio, stablize 10
After minute, is mixing one middle position six sample detecting of progress of selection in case 7 and recording data, calculating six numerical value and repeat
Property, think that the dust concentration mixed in case 7 is constant when repeatability is less than 5%；
Again from six points for mixing 7 top position of case selection different location, each point measures three times and calculates its average value,
The average value is the dust concentration value of the point, then calculates the repeatability of the aerosol concentration value of above-mentioned six points, when repeatability is small
When 5%, it is believed that mix dust in case 7 by evenly mixing；
Filter membrane sampling half an hour is carried out with the flow of 12.5L/min, filter membrane is removed, weighs on the balance of a ten thousandth,
The dust concentration mixed in case 7 is calculated by gain in weight/sampling flow/sampling time of filter membrane, this numerical value is standard value.
The dust concentration of case 7 is mixed with detected dust instrument detection, obtained numerical value is the indicating value of tested dust instrument, will
The standard value of dust and the indicating value of tested dust instrument are compared, for evaluating the performance of tested dust instrument；
When needing to change the dust concentration in mixing case 7, first flow controller 4 and second are adjusted by concentration necessary
The flow of amount controller 5, then repeat the above steps progress.
To as it can be seen that can be obtained by dust generating system provided by the embodiment of the utility model for environmental monitoring
Low concentration dust atmosphere, adjusted moreover, can be realized more concentration, be conducive to improve detection efficiency.
In a particular embodiment, in above-mentioned dust generating system, it is additionally provided with the drier 6 being connected on before mixing case 7, with
And it is connected on the clarifier 8 for mixing the exit of case 7.Drier 6 is used to dispel the moisture in aerosol, and dry dust is mixed
The dust atmosphere of even concentration is formed in even case 7, extra dust is removed by clarifier 8.
Specifically, the purification efficiency of clarifier 8 is 99%, and clarifier 8 includes clarifier shell and aseptic net
Change core, Purified core is removably disposed in clarifier shell, to replace.In addition, filter 2 includes filter housing and rises
The filter core of filtration, filter core are removably disposed in filter housing, to replace；Drier 6 includes drier enclosure
And desiccant, desiccant are removably disposed in drier enclosure, to replace.
Wherein, drier 6 is the drying tube added with air guide network management, the desiccant in drier 6 is molecular sieve desiccant.
Molecular sieve principle is used, guarantees to remove the moisture in chalk dust removing under the premise of dust is not adsorbed.Molecular sieve is the silicon of crystalline state
Hydrochlorate or alumino-silicate are connected by oxygen bridge key by oxygen-octahedron or aluminum-oxygen tetrahedron and are formed, and wettability power is extremely strong.
Wherein, filter 2 is ultraprecise air filter, and purification efficiency reaches 0.01 μm.For example, filter 2 is adopted
With ultra high efficiency oil removal filter, 0.01 μm or more can be filtered out in as low as 0.01 μm of liquid and solia particle and liquid, gas
Particle and bacterium.In a particular embodiment, the volume for mixing case 7 is 1m3, and made of polytetrafluoroethylene (PTFE) material, it reduces
Mix absorption of the case 7 to dust particles, it is ensured that the dust concentration mixed in case 7 is stable and uniform.
But filter 2, drier 6, clarifier 8 and mix the specific structure of case 7 can be there are many being related to scheme, this
Field technical staff can be specifically arranged according to actual needs, and the utility model is not specifically limited in this embodiment.
Finally, it is to be noted that, herein, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes that
A little elements, but also including other elements that are not explicitly listed, or further include for this process, method, article or
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged
Except there is also other identical elements in the process, method, article or apparatus that includes the element.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new
Type.Various modifications to these embodiments will be readily apparent to those skilled in the art, and determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The widest scope consistent with features of novelty.
Claims (6)
1. a kind of dust generating system characterized by comprising
For conveying the gas source generator (1) of the compressed gas with steady pressure；
For dispelling the filter (2) of suspended particles in gas；
For generating the aerosol generator (3) of aerosol；
First flow controller (4)；
It mixes case (7)；
The gas source generator (1), the filter (2), the aerosol generator (3), the first flow controller
(4) it is sequentially connected and is connected to the mixing case (7).
2. dust generating system according to claim 1, which is characterized in that further include being arranged before the mixing case (7)
For dispelling the drier (6) of moisture in the aerosol.
3. dust generating system according to claim 1, which is characterized in that further include and the aerosol generator (3)
The second flow controller (5) of parallel arrangement.
4. dust generating system according to claim 1, which is characterized in that further include and the outlet for mixing case (7)
The clarifier (8) of connection.
5. dust generating system according to claim 4, which is characterized in that the clarifier (8) includes clarifier shell
With aseptic Purified core, the Purified core is removably disposed in the clarifier shell.
6. dust generating system according to claim 2, which is characterized in that the filter (2) includes filter housing
With the filter core of filtration, the filter core is removably disposed in the filter housing；
And/or the drier (6) is the drying tube added with air guide network management；
And/or the cabinet material for mixing case (7) is polytetrafluoroethylene (PTFE).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820596112.1U CN208786188U (en) | 2018-04-24 | 2018-04-24 | A kind of dust generating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820596112.1U CN208786188U (en) | 2018-04-24 | 2018-04-24 | A kind of dust generating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208786188U true CN208786188U (en) | 2019-04-26 |
Family
ID=66199548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820596112.1U Active CN208786188U (en) | 2018-04-24 | 2018-04-24 | A kind of dust generating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208786188U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108499382A (en) * | 2018-04-24 | 2018-09-07 | 北京市计量检测科学研究院 | A kind of dust generating system and a kind of dust instrument calibration method |
| CN111974321A (en) * | 2020-09-02 | 2020-11-24 | 青岛众瑞智能仪器有限公司 | Ultrasonic aerosol generator with turbulence protection gas circuit capable of generating in multiple paths |
-
2018
- 2018-04-24 CN CN201820596112.1U patent/CN208786188U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108499382A (en) * | 2018-04-24 | 2018-09-07 | 北京市计量检测科学研究院 | A kind of dust generating system and a kind of dust instrument calibration method |
| CN111974321A (en) * | 2020-09-02 | 2020-11-24 | 青岛众瑞智能仪器有限公司 | Ultrasonic aerosol generator with turbulence protection gas circuit capable of generating in multiple paths |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108499382A (en) | A kind of dust generating system and a kind of dust instrument calibration method | |
| JP4579744B2 (en) | Filter inspection device | |
| CN105043954B (en) | The calibration system and its scaling method of digital dust instrument | |
| CN103091134A (en) | Dilution sampling system and sampling method of fixed source particles and volatile organic compounds | |
| CN208786188U (en) | A kind of dust generating system | |
| JPH06500851A (en) | Gas sample extraction device and dilution tunnel used in the device | |
| CN102636621A (en) | Portable PM2.5 (Particulate Matter 2.5) monitoring equipment and method | |
| CN109765154B (en) | Online calibration system and calibration method for PM2.5/PM10 light scattering particulate matter monitor | |
| CN204924866U (en) | Calibration system of digit dust appearance | |
| CN109269956B (en) | Experimental device for testing performance of microfluid inertial impact filter | |
| CN206410975U (en) | A kind of particulate matter detection means and its system | |
| CN109827880A (en) | Airborne particle counter calibrating installation and calibration method | |
| CN205228890U (en) | Particle counter sampling device | |
| Ma et al. | An eddy-covariance system with an innovative vortex intake for measuring carbon dioxide and water fluxes of ecosystems | |
| CN203310501U (en) | Automatic filter film weighing apparatus | |
| CN209589630U (en) | A kind of atmospheric monitoring system | |
| Kenny et al. | Aspiration and sampling efficiencies of the TSP and louvered particulate matter inlets | |
| CN205844135U (en) | A kind of particulate matter on-line monitoring equipment | |
| CN220019301U (en) | Standard substance transfer device of automatic monitoring equipment for particulate matters in ambient air | |
| CN204882317U (en) | Filtration efficiency calibration system of filtration equipment | |
| KR102452283B1 (en) | Calibration method of scattered light type fine dust measuring device | |
| CN209727843U (en) | Carrier gas concentration balancer based on air pollution analyte detection | |
| JP2575149B2 (en) | Particle analyzer | |
| CN209542243U (en) | A kind of high concentration mist of oil tester | |
| CN211955119U (en) | Product particle size detection equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |