CN207779773U - Enrichment facility and pneumatic focusing system - Google Patents
Enrichment facility and pneumatic focusing system Download PDFInfo
- Publication number
- CN207779773U CN207779773U CN201721467469.1U CN201721467469U CN207779773U CN 207779773 U CN207779773 U CN 207779773U CN 201721467469 U CN201721467469 U CN 201721467469U CN 207779773 U CN207779773 U CN 207779773U
- Authority
- CN
- China
- Prior art keywords
- sample introduction
- concentrate container
- container
- flow
- enrichment facility
- 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
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
A kind of pneumatic focusing system the utility model is related to concentrate container and comprising the concentrate container.The enrichment facility includes concentrate container, sample introduction mechanism, deflector and buffer container, and wherein concentrate container is equipped with atmospheric pressure cavity and pumping column, and sample introduction mechanism is equipped with sample intake passage, metering hole and the tap hole being sequentially communicated；Deflector is set on concentrate container, and buffer container is connect with concentrate container and/or deflector and the cushion chamber is made to be connected with the flow-guiding channel to meet the vacuum loading requirement for not influencing vacuum analytical equipment.When above-mentioned enrichment facility is connect with the sample introduction interface of aerodynamics lens, under conditions of using conventional vacuum load, under the promotion of draught head, aerosol sample introduction flow can be increased, the percent of pass of large-size particles object can be increased, it realizes to the concentration of aerosol and the focusing of particle beam, this is beneficial to carry out the sample introduction of aerosol and detection work under low concentration.
Description
Technical field
The utility model is related to analysis and testing equipment fields, more particularly to a kind of enrichment facility and pneumatic focusing system.
Background technology
The generation of particle beam is an important technological problems of Atmospheric particulates research field.The master of particle beam generation device
Act on is the particle of suspension to be pooled to the particle beam of approximate individual particle arrangement, and be transferred to specified vacuum region.Generally make
Particle beam generation device generally uses current limliting aperture (alternatively referred to as " critical hole ") sample introduction, the current limliting aperture it is a diameter of
0.1mm or so, main function are to completely cut off air and vacuum, limitation sample introduction flow, the operating pressure for controlling particle beam generation device.
It can be generally focused under the action of a series of focusing units into the particulate matter after current limliting aperture, to generate particle
Beam.
Wherein, for conventional pneumatic focusing system, using the current limliting aperture of a diameter of 0.1mm or so so that
The sample introduction flow of device is generally limited to 100mL/min, and the flux of unit interval endoparticle is low, and the collecting efficiency of particulate matter is low
Under, while large particle (diameter >=3 μm) being made to generate a large amount of loss near the current limliting aperture, cause the percent of pass of large particle
Also not high.In this regard, the vacuum corresponding to pneumatic focusing system downstream vacuum chamber can be caused if the diameter for increasing current limliting aperture
Pump load is excessive, and Wen Sheng is sharply increased.
Utility model content
Based on this, it is necessary to provide a kind of in the vacuum loading for not influencing vacuum analytical equipment, gas can be increased
Colloidal sol sample introduction flow simultaneously improves the enrichment facility of large particle percent of pass and pneumatic focusing system.
A kind of enrichment facility, including：
Concentrate container, the concentrate container have atmospheric pressure cavity, and the concentrate container is equipped with to be connected with the atmospheric pressure cavity
Pumping column, the pumping column is for connecting air extractor；
Sample introduction mechanism, the sample introduction mechanism are equipped with sample intake passage, metering hole and the tap hole being sequentially communicated, the current limliting
The aperture in hole is less than the aperture of the tap hole, and the sample introduction mechanism is set on the concentrate container, and the tap hole and institute
It states atmospheric pressure cavity to be connected, the size of the tap hole gradually increases in one end close to the atmospheric pressure cavity；
Deflector, the deflector have flow-guiding channel, and the deflector is set on the concentrate container, described
The sample introduction end of deflector is stretched into the atmospheric pressure cavity and stretches to end where the air stream outlet in the tap hole, and described leads
Flow mechanism sample introduction end and the hole wall of the tap hole between have pumping gap, and the flow-guiding channel, the tap hole and
The metering hole is coaxial；And
Buffer container, the buffer container have a cushion chamber, the buffer container and the concentrate container and/or described lead
Stream mechanism connects and the cushion chamber is made to be connected with the flow-guiding channel, and the buffer container is used for and connect aerodynamics
The sample introduction interface of lens.
The aperture of the flow-guiding channel gradually increases from inlet end to outlet side in one of the embodiments,.
The deflector is the streamlined separation cone of outer profile in one of the embodiments,.
The tap hole is in the arc-shaped expansion shape in one end close to the atmospheric pressure cavity in one of the embodiments,.
The sample introduction mechanism includes current divider, injector and constrictor in one of the embodiments,；
There is the current divider mounting groove and the tap hole positioned at the installation trench bottom, the mounting groove to stretch into institute
It states in atmospheric pressure cavity and the inner wall of the side wall and the atmospheric pressure cavity of the mounting groove abuts against；
The injector have the inlet channel, the injector be mounted on the mounting groove in and with the mounting groove
Madial wall abut against；
The constrictor is equipped with the metering hole, the constrictor be set in the mounting groove and positioned at the current divider and
The metering hole is set to be connected respectively with the sample intake passage and the tap hole between injector.
The aperture of the metering hole on the constrictor is not less than 0.2mm in one of the embodiments,.
The current divider is equipped with towards the flange outside the mounting groove in one of the embodiments, the flange with
The wall of the concentrate container abuts against；And/or
The pneumatic focusing system further includes fixed plate, and the fixed plate is set on the injector, and the fixation
Plate is connect by fastener with the current divider and the concentrate container.
The concentrate container has outlet, end where the outlet of the concentrate container in one of the embodiments,
Equipped with interior step, the sample outlet end portion of the deflector is connected on the interior step of the concentrate container.
A kind of pneumatic focusing system, including the enrichment facility described in aerodynamics lens and any of the above-described embodiment；
The aerodynamics lens have focus channel, sample introduction interface and the buffering of the aerodynamics lens
Container is connected and the focus channel is made to be connected with the cushion chamber, and the sample interface that goes out of the aerodynamics lens is used for
Connect vacuum sample introduction interface.
The pneumatic focusing system further includes air extractor and exhaust pipe, the pumping in one of the embodiments,
Device is connected by the exhaust pipe with the pumping column of the concentrate container, and the exhaust pipe is equipped with flow tune
Save valve；And/or
The buffer container is equipped with the vacuum gauge of the vacuum degree for monitoring the cushion chamber.
Above-mentioned enrichment facility includes concentrate container, sample introduction mechanism, deflector and buffer container, is wherein set on concentrate container
There are the pumping column being connected with atmospheric pressure cavity, sample introduction mechanism to be equipped with sample intake passage, metering hole and the tap hole being sequentially communicated, current limliting
The aperture in hole is less than the aperture of tap hole so that the particulate matter in aerosol sample is concentrated, and the size of tap hole is close to atmospheric pressure cavity
One end gradually increase so that fraction is smoothly taken away and does not influence the flow direction of particle；Deflector is set to concentrate container
On, buffer container is connect with concentrate container and/or deflector and the cushion chamber is made to be connected with the flow-guiding channel with full
Foot does not influence the vacuum loading requirement of vacuum analytical equipment, and the aerosol entered in cushion chamber can be made to become layer from turbulence state
Stream mode, is conducive to subsequently enter in aerodynamics lens and is focused.By setting can mutually matched metering hole, point
Discharge orifice, flow-guiding channel and cushion chamber are being adopted when above-mentioned enrichment facility to be connect with the sample introduction interface of aerodynamics lens
Under conditions of being loaded with conventional vacuum, under the promotion of draught head, since gas molecule is different with the inertia of particulate matter, from shunting
Most of gas of hole outflow will be taken away by air extractor, particulate matter and partial gas then enter after flow-guiding channel enter back into it is poly-
In the vacuum chamber of burnt channel and analytical equipment, aerosol sample introduction flow can be increased on the whole, improve unit interval endoparticle object
Throughput, can increase the efficiency of transmission and percent of pass of large-size particles object, realize the concentration to aerosol, and after capable of improving
The continuous focusing power to large particle, this is beneficial to carry out the sample introduction of aerosol and detection work under low concentration.
Further, the deflector of above-mentioned enrichment facility preferably separates cone, and the outer profile for detaching cone is streamlined, has
Interference during conducive to reducing to tap hole and the pumping of air pressure intracavitary to air-flow to particulate matter, can realize to aerosol
Beam focusing effect.
The pneumatic focusing system for including above-mentioned enrichment facility, under conditions of using conventional vacuum load, in draught head
Under promotion, aerosol sample introduction flow can be increased on the whole, and the particulate matter throughput in the unit interval can be improved, realization pair
The concentration and focusing of aerosol, and the focusing power to large particle is improved, this is beneficial to carry out aerosol under low concentration
Sample introduction and detection work, can significantly improve the energy of the analytical equipments such as individual particle aerosol mass spectrometer analysis 3um or more particulate matters
Power.
Description of the drawings
Fig. 1 is the structural schematic diagram of the pneumatic focusing system of an embodiment；
Fig. 2 is the partial structural diagram of the enrichment facility in Fig. 1.
Specific implementation mode
The utility model is more fully retouched below with reference to relevant drawings for the ease of understanding the utility model,
It states.The preferred embodiment of the utility model is given in attached drawing.But the utility model can in many different forms come in fact
It is existing, however it is not limited to embodiment described herein.Make public affairs to the utility model on the contrary, purpose of providing these embodiments is
The understanding for opening content is more thorough and comprehensive.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.
Unless otherwise defined, all of technologies and scientific terms used here by the article is led with the technology for belonging to the utility model
The normally understood meaning of technical staff in domain is identical.Terminology used in the description of the utility model herein only be
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term " and or " used herein includes
Any and all combinations of one or more relevant Listed Items.
Incorporated by reference to Fig. 1 and Fig. 2, the pneumatic focusing system 10 of an embodiment, including enrichment facility and aerodynamics it is saturating
Mirror 300.Wherein, enrichment facility includes concentrate container 100, sample introduction mechanism 120, deflector 130 and buffer container 200.
There is concentrate container 100 atmospheric pressure cavity 101, concentrate container 100 to be equipped with the pumping column being connected with atmospheric pressure cavity 101
110.Pumping column 110 will flow into gas for connecting air extractor from the sample intake passage, metering hole, tap hole of sample introduction mechanism 120
The gas of pressure chamber 101 is taken away, to realize the concentration to the particulate matter of aerosol.
Specifically, concentrate container 100 is in hollow column structure on the whole, i.e. concentrate container 100 has 101 He of atmospheric pressure cavity
The injection port and outlet being connected with atmospheric pressure cavity 101.
Preferably, the bleeding point of pumping column 110 is close to end where the air stream outlet of tap hole, in time will be from tap hole
Most of gas of outflow is taken away.Preferably, one end of pumping column 110 is connect with concentrate container 100 by taper thread, is improved close
Feng Xing, and it is easy to disassemble, and the other end of pumping column 110 is connect by exhaust pipe with air extractors 112 such as air-sucking mechanical pumps.Together
When, flow control valve 111 can be set on exhaust pipe, to regulate and control the vacuum degree in atmospheric pressure cavity 101, to meet to subsequent analysis instrument
The requirement that the operating pressure of the vacuum system of device does not have an impact.
Further, it being evacuated there are two columns 110, two pumping columns 100 are opposite to be located on the side wall of concentrate container 100, with
Prevent the influence of air flow direction and mass flow discrepancy to the flow direction of the particulate matter into the aerosol in flow-guiding channel.
In other embodiments, pumping column 110 can have multiple, such as three, four, six etc., multiple pumping columns
110 are located on the side wall of concentrate container 100, and multiple pumping columns 110 are symmetrical set along the axis of tap hole, with equably real
The air-flow now flowed out from tap hole is taken away, but reduces entrained solid particles object in the air-flow taken away to the greatest extent.
Further, concentrate container 100 has outlet, end where the outlet of concentrate container 100 be equipped with interior step and
Interconnecting piece.The sample outlet end portion of deflector 130 is connected on the interior step of concentrate container 100, to improve to the close of atmospheric pressure cavity 101
Feng Xing, while keeping whole apparatus structure more compact.The interconnecting piece of concentrate container 100 is for connecting vacuum sample introduction interface.
In the present embodiment, sample intake passage, metering hole and the tap hole of connection, limit are equipped on sample introduction mechanism 120 successively
The aperture of discharge orifice is less than the aperture of tap hole so that the particulate matter in aerosol sample is concentrated.Sample introduction mechanism 120, which is set to concentration, to be held
On device 100, and tap hole is connected with atmospheric pressure cavity 101, and the size of tap hole gradually increases close to one end of atmospheric pressure cavity 101,
It is preferred that arc-shaped expansion shape, can coordinate with air extractor 112 and realize the focusing to particulate matter and the shunting to gas, make part
Air-flow is smoothly taken away and does not influence the flow direction of particle.Sample introduction mechanism 120 be set to concentrate container 100 injection port where end and
The end seals injection port.
In the present embodiment, sample introduction mechanism 120 includes current divider 121, injector 122 and constrictor 123.Sample introduction mechanism
120 are set to the injection port place end of concentrate container 100 and seal injection port at the end.
There is current divider 121 mounting groove and the tap hole positioned at installation trench bottom, mounting groove to stretch into atmospheric pressure cavity 101 and pacify
The side wall of tankage and the inner wall of atmospheric pressure cavity 101 abut against.Current divider 121 is equipped with towards the flange outside mounting groove, flange with it is dense
The wall of capacity reducing device 100 abuts against, in order to further seal whole system by fasteners such as screws.
There is injector 122 inlet channel, injector 122 to be mounted in mounting groove and offset with the madial wall of mounting groove
It connects.Preferably, injector 122 has step structure, and injector 122 is mounted in the mounting groove of current divider 121, and injector
The flange of 122 step and current divider 121 is flush, so that dress apparatus structure is compact, and convenient for injector 122 and shunting
Device 121 is sealed and fixes.
Constrictor 123 is equipped with metering hole, and constrictor 123 is set in the mounting groove of current divider 121 and is located at 121 He of current divider
Between injector 122, and metering hole is connected with sample intake passage and tap hole respectively.
Preferably, the aperture of the metering hole on constrictor 123 is less than the aperture of the internal diameter and tap hole of sample intake passage.Into one
Step, the aperture of the metering hole on constrictor 123 is not less than 0.2mm, it is highly preferred that the aperture of metering hole is 0.2~0.5mm,
Such as can be 0.2mm, 0.3mm, 0.4mm or 0.45mm, further to meet the behaviour of the vacuum system to subsequent analysis instrument
In the case of making the requirement that pressure does not have an impact, sample introduction flow can be increased, and achieve the effect that concentrate low concentration aerosol.
Further, sample introduction mechanism 120 further includes fixed plate 124.Fixed plate 124 is set on injector 122, fixed plate
124 are connect by fasteners such as screws with the wall of current divider 121 and concentrate container 100, are assembled by removably mode
Model machine structure 120 is conveniently replaceable the constrictor 123 in different metering hole apertures.And whole sample introduction mechanism 120 is made to be easily installed.Example
Such as, when being more than 0.2mm using metering hole aperture, the sample introduction efficiency of the aerosol more than 3 μm of particulate matters can be significantly improved, favorably
In the detection and research of large particle, and it is advantageously implemented the sample introduction concentration to aerosol under low concentration simultaneously, especially favorably
In the detection work of the large particle for bioaerosol, PM2.5 or more.
For another example, the sample introduction flow of aerosol traditionally be 100mL/min, and use present embodiment enrichment facility with
Aerodynamics lens 300 sample introduction interface connection when, and metering hole aperture be more than 0.2mm when, aerosol can be with 500mL/
The flow of min passes through constrictor 123, reaches under the promotion of pressure difference or close to velocity of sound, due to gas molecule and particulate matter
Inertia is different, and most of gas is evacuated by air extractor, and pumping speed may be configured as 400mL/min, and residual gas is then with 100mL/
The flow of min and one superhigh speed of particulate matter are by flow-guiding channel and sequentially enter cushion chamber 201, aerodynamics lens 300
In the vacuum chamber of focus channel and analytical equipment, the sample introduction concentration to aerosol is realized.
In the present embodiment, deflector 130 has flow-guiding channel, the concentrated gas for will not be pumped in tap hole
Sol sample water conservancy diversion enters in cushion chamber 201, and the aerosol entered in flow-guiding channel is made to become laminar condition from turbulence state,
Convenient for subsequent focusing boundling.Deflector 130 is set on concentrate container 100, and air pressure is stretched at the sample introduction end of deflector 130
In chamber 101 and end where the air stream outlet in tap hole is stretched to, between the sample introduction end and the hole wall of tap hole of deflector 130
With pumping gap, and flow-guiding channel, metering hole, tap hole and sample intake passage are coaxial, to make full use of the inertia of particulate matter, protect
Card particulate matter enters in flow-guiding channel.Preferably, the radial dimension of flow-guiding channel gradually increases, so that in flow-guiding channel under air pressure
It drops and air-flow is made gradually to become laminar flow from turbulent flow in flow-guiding channel, focused convenient for particle beam.
Deflector 130 preferably separates cone.Further, the outer profile for detaching cone is streamlined, is conducive to be evacuated
Reduce interference of the air-flow to particulate matter during stream, can realize the beam focusing effect to aerosol.
In the present embodiment, buffer container 200 is in column structure, and there is buffer container 200 cushion chamber 201, buffering to hold
Device 200 connect with concentrate container 100 and/or deflector 130 and cushion chamber 201 is made to be connected with flow-guiding channel, so that through dense
The aerosol of contracting, which enters, meets conventional operating pressure in aerodynamics lens 300.Preferably, buffer container 200 is equipped with
Vacuum gauge for the vacuum degree for monitoring cushion chamber 201, in order to adjust the speed of exhaust of air extractor.
In the present embodiment, the sample introduction interface of aerodynamics lens 300 is connected with buffer container 200 and makes focusing
Channel is connected with cushion chamber 201, and aerodynamics lens 300 go out vacuum chamber 1 of the sample interface for linking parsing equipment
Vacuum sample introduction interface.
The particle size range for the particulate matter that traditional pneumatic focusing system focuses is limited, in certain particle size range, tradition
The focusing efficiency of pneumatic focusing system often to show both ends low, it is intermediate high, that is to say, that conventional lens are to detecting bulky grain
Object is relatively difficult, this is mainly due to the inertia of particulate matter is excessive, when large particle enters evacuated interior by atmospheric environment its
The variation that motion state occurs is notable not as good as little particle.And it is filled by the concentration of aerodynamics lens 300 and present embodiment
It sets and matches, the efficiency of transmission and percent of pass of the large particle in aerosol can be significantly improved, while can improve to air
Dynamics lens 300 can significantly improve the analytical equipments such as individual particle aerosol mass spectrometer point to the focusing power of large particle
Analyse the ability of 3um or more particulate matters.
In the present embodiment, further, pneumatic focusing system 10 further includes air extractor 112 and exhaust pipe 111.
Air extractor 112 can be mechanical pump, and exhaust pipe 111 can be bellows.The pumping of exhaust pipe 111 and concentrate container 100
Air column 110 is connected, and it is dynamic to adjust the speed of exhaust to tap hole and adjust air that exhaust pipe 111 is equipped with flow control valve
The operating pressure of mechanics lens 300.
In the present embodiment, further, pneumatic focusing system 10 further includes saturating for regulating and controlling to enter aerodynamics
The ball valve 400 of the throughput of mirror 300 can further be adjusted into aerodynamics lens by adjusting the aperture of ball valve 400
300 throughput and the operating pressure of aerodynamics lens 300.
The enrichment facility of the above embodiment and pneumatic focusing system 10 comprising the enrichment facility can by setting
Mutually matched atmospheric pressure cavity 101, metering hole, tap hole, flow-guiding channel and cushion chamber 201, are moved when by enrichment facility and air
When the sample introduction interface connection of mechanics lens 300, under conditions of using conventional vacuum load, under the promotion of draught head, due to
Gas molecule is different with the inertia of particulate matter, and the most of gas flowed out from tap hole will be pumped, particulate matter and small part gas
Body is flown into the vacuum chamber of analytical equipment again after then entering flow-guiding channel and aerodynamics lens 300, can be increased on the whole
Aerosol sample introduction flow can increase the percent of pass of large-size particles object, realize the concentration to aerosol, convenient for focusing formation
Grain beam, realizes the concentration to aerosol, this is beneficial to carry out the sample introduction of aerosol and detection work under low concentration.Meanwhile it is logical
It crosses the aperture adjustment of constrictor 123 and is matched with the extraction flow of air extractor 112, the sample introduction flow of aerosol can be made
Increase, but can still ensure that the gas sampling amount of subsequent analysis equipment is protected in the case of the vacuum loading of not impact analysis equipment
It holds constant, and increases particle concentration, improve the test accuracy of analytical equipment, it is easy for installation, large particle can be suitble to
Focus analysis.
Particularly under the conditions of the aerosol of low particle concentration is detected, such as in clean room, north and south polar ring
When border and environmental background website are observed, the particulate matter of enough statistical significances is obtained by being difficult in certain time.And use gas
Dynamic focusing system 10 concentrates the aerosol of low particle concentration by enrichment facility, can significantly improve the dense of particulate matter
Degree, improves the detection sensitivity of analytical equipment, and improve the test accuracy of analytical equipment.
Each technical characteristic of embodiment described above can be combined arbitrarily, to keep description succinct, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, it is all considered to be the range of this specification record.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But therefore it can not be interpreted as the limitation to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (10)
1. a kind of enrichment facility, which is characterized in that including：
There is atmospheric pressure cavity, the concentrate container to be equipped with the pumping being connected with the atmospheric pressure cavity for concentrate container, the concentrate container
Air column, the pumping column is for connecting air extractor；
Sample introduction mechanism, the sample introduction mechanism are equipped with sample intake passage, metering hole and the tap hole being sequentially communicated, the metering hole
Aperture is less than the aperture of the tap hole, and the sample introduction mechanism is set on the concentrate container, and the tap hole and the gas
Pressure chamber is connected, and the size of the tap hole gradually increases in one end close to the atmospheric pressure cavity；
There is flow-guiding channel, the deflector to be set on the concentrate container for deflector, the deflector, the water conservancy diversion
End where the air stream outlet in the tap hole, and the flow guiding machine are stretched into the atmospheric pressure cavity and stretched in the sample introduction end of mechanism
There is pumping gap, and the flow-guiding channel, the tap hole and described between the sample introduction end and the hole wall of the tap hole of structure
Metering hole is coaxial；And
Buffer container, the buffer container have cushion chamber, the buffer container and the concentrate container and/or the flow guiding machine
Structure connects and the cushion chamber is made to be connected with the flow-guiding channel, and the buffer container is used for and connect aerodynamics lens
Sample introduction interface.
2. enrichment facility according to claim 1, which is characterized in that the aperture of the flow-guiding channel is from inlet end to outlet
End gradually increases.
3. enrichment facility according to claim 2, which is characterized in that the deflector is streamlined point of outer profile
From cone.
4. enrichment facility according to claim 1, which is characterized in that the tap hole is close to one end of the atmospheric pressure cavity
Arc-shaped expansion shape.
5. enrichment facility according to any one of claims 1 to 4, which is characterized in that the sample introduction mechanism include current divider,
Injector and constrictor；
There is the current divider mounting groove and the tap hole positioned at the installation trench bottom, the mounting groove to stretch into the gas
It presses intracavitary and the side wall of the mounting groove and the inner wall of the atmospheric pressure cavity abuts against；
The injector have the sample intake passage, the injector be mounted on the mounting groove in and in the mounting groove
Side wall abuts against；
The constrictor is equipped with the metering hole, and the constrictor is set in the mounting groove and is located at the current divider and sample introduction
The metering hole is set to be connected respectively with the sample intake passage and the tap hole between device.
6. enrichment facility according to claim 5, which is characterized in that the aperture of the metering hole is not less than 0.2mm.
7. enrichment facility according to claim 5, which is characterized in that the current divider is equipped with towards outside the mounting groove
Flange, the wall of the flange and the concentrate container abuts against；And/or
Further include fixed plate, the fixed plate is set on the injector, and the fixed plate passes through fastener and described point
Stream device is connected with the concentrate container.
8. enrichment facility according to any one of claims 1 to 4, which is characterized in that the concentrate container has outlet,
End is equipped with interior step where the outlet of the concentrate container, and the sample outlet end portion of the deflector is connected to the concentrate container
Interior step on.
9. a kind of pneumatic focusing system, which is characterized in that described in aerodynamics lens and any one of claim 1 to 8
Enrichment facility；
The aerodynamics lens have focus channel, sample introduction interface and the buffer container of the aerodynamics lens
It is connected and the focus channel is made to be connected with the cushion chamber, the aerodynamics lens goes out sample interface for connecting
Vacuum sample introduction interface.
10. pneumatic focusing system according to claim 9, which is characterized in that further include air extractor and exhaust pipe, institute
It states air extractor by the exhaust pipe to be connected with the pumping column of the concentrate container, the exhaust pipe is equipped with
Flow control valve；And/or
The buffer container is equipped with the vacuum gauge of the vacuum degree for monitoring the cushion chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721467469.1U CN207779773U (en) | 2017-11-06 | 2017-11-06 | Enrichment facility and pneumatic focusing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721467469.1U CN207779773U (en) | 2017-11-06 | 2017-11-06 | Enrichment facility and pneumatic focusing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207779773U true CN207779773U (en) | 2018-08-28 |
Family
ID=63233069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721467469.1U Active CN207779773U (en) | 2017-11-06 | 2017-11-06 | Enrichment facility and pneumatic focusing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207779773U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109752224A (en) * | 2017-11-06 | 2019-05-14 | 广州禾信仪器股份有限公司 | Enrichment facility and pneumatic focusing system |
| CN113899613A (en) * | 2021-10-08 | 2022-01-07 | 浙江大学 | A nano-aerosol enrichment device and method based on water vapor supersaturation growth technology |
| CN114441269A (en) * | 2022-02-14 | 2022-05-06 | 华北电力大学（保定） | A device for detecting the composition and quantity of atmospheric aerosols |
-
2017
- 2017-11-06 CN CN201721467469.1U patent/CN207779773U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109752224A (en) * | 2017-11-06 | 2019-05-14 | 广州禾信仪器股份有限公司 | Enrichment facility and pneumatic focusing system |
| CN109752224B (en) * | 2017-11-06 | 2023-11-28 | 广州禾信仪器股份有限公司 | Concentrating device and pneumatic focusing system |
| CN113899613A (en) * | 2021-10-08 | 2022-01-07 | 浙江大学 | A nano-aerosol enrichment device and method based on water vapor supersaturation growth technology |
| CN114441269A (en) * | 2022-02-14 | 2022-05-06 | 华北电力大学（保定） | A device for detecting the composition and quantity of atmospheric aerosols |
| CN114441269B (en) * | 2022-02-14 | 2023-08-08 | 华北电力大学（保定） | Component and quantity detection device for atmospheric aerosol |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109752224A (en) | Enrichment facility and pneumatic focusing system | |
| CN207779773U (en) | Enrichment facility and pneumatic focusing system | |
| CN108760369A (en) | A kind of testing equipment for testing compressor multifunctional performance | |
| CN103364257B (en) | Submicron aerosol particle concentrator and performance testing device thereof and method of testing | |
| CN101241063A (en) | Cigarette flue gas aerosol grain size distribution detection method | |
| CN109916694B (en) | Virtual impacter of submicron terminal is decreased to ultralow wall | |
| CN206573338U (en) | A kind of fly ash sampling device | |
| CN207779795U (en) | Gas-solid separating device | |
| CN110068526A (en) | A kind of particulate matter on-line dilution sampled measurements system and method | |
| CN207248571U (en) | Modified coal dust sampling system | |
| CN211825354U (en) | Dilution probe based on jet pump principle | |
| CN211262888U (en) | A dual-stage series multi-point isokinetic sampling system | |
| CN107421863A (en) | It is a kind of to combine the PM that monodisperse aerosol occurs1Cutting head Performance Test System | |
| CN109752232A (en) | Gas-solid separating device | |
| CN215178954U (en) | Particulate matter on-line measuring system | |
| CN213091288U (en) | Potassium iodide aerosol particle sampler | |
| CN201163253Y (en) | Preparation system for cigarette smoke aerosol detection example gas | |
| CN108760414B (en) | Medium flow virtual cyclone sampler and use method thereof | |
| CN209597143U (en) | aerosol generator | |
| CN208443618U (en) | Atmospheric particulates sample current divider | |
| CN208044413U (en) | A kind of pedestal of gas flow controller | |
| CN203037512U (en) | Two-grade type single-grain sampler | |
| CN2641629Y (en) | Shell stream airosol particulate beam sampling device | |
| CN201173887Y (en) | System for cigarette flue gas aerosol detection | |
| CN217878267U (en) | Closed backflow aerosol wind tunnel capable of automatically discharging particulate matters |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 510535 No. 16, Xinrui Road, Huangpu District, Guangzhou, Guangdong Patentee after: GUANGZHOU HEXIN INSTRUMENT Co.,Ltd. Address before: 510530 Guangdong Guangzhou Guangzhou hi tech Industrial Development Zone, Science City, 11 yuan A3 Road third floor. Patentee before: GUANGZHOU HEXIN INSTRUMENT Co.,Ltd. |
|
| CP02 | Change in the address of a patent holder |