CN206420734U - A kind of particle concentration detection means - Google Patents
A kind of particle concentration detection means Download PDFInfo
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- CN206420734U CN206420734U CN201720137286.7U CN201720137286U CN206420734U CN 206420734 U CN206420734 U CN 206420734U CN 201720137286 U CN201720137286 U CN 201720137286U CN 206420734 U CN206420734 U CN 206420734U
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Abstract
The utility model is related to a kind of particle concentration detection means.Particle concentration detection means, including air particle cutter, sensor cluster and the asepwirator pump being sequentially connected.Sensor cluster includes chamber, β ray irradiations source, β-ray detector and filter-paper-tape.Filter-paper-tape is laid in the chamber and can seal the passage that air is flowed through, and β ray irradiations source and β-ray detector set up separately in the both sides of filter-paper-tape.When air-breathing pump work, air circulates and is pumped out after passing through filter-paper-tape by air-breathing in the chamber, and particulate in air is captured by filter-paper-tape and laying dust amyloid plaque is formed on filter-paper-tape.β-ray detector can measure the β transmitted intensities through filter-paper-tape in real time and then obtain the particulate matter quality concentration of air.Particle concentration structure of the detecting device described in the utility model is simple, with low cost.Automatic detection can be fully achieved, accuracy, reliability and the precision of testing result are all very high, disclosure satisfy that existing air detection demand.
Description
Technical field
The utility model is related to a kind of particle concentration detection means.
Background technology
In recent years, there is haze weather more in China, and the routine work life given people is made troubles, while endangering people
It is healthy.And the pollution of particulates thing is to cause the main cause of haze weather, while to the health of human body
It will also result in influence.Therefore particulate in air concentration is to judge one of major criterion of air quality.
At present, monitoring of the China to particle concentration predominantly detects PM10 and PM2.5, and PM10 is less than or equal to 10 μm
Particulate matter, PM2.5 is less than or equal to 2.5 μm particulate matters.Assay method can be divided into manual monitoring method and automatic monitoring method.From
Dynamic monitoring method is easy to implement, can monitored automatically due to simple to operate, the monitoring method being most widely used as monitoring station.
Wherein β attenuation sensors are putative standard methods.
β radiation absorption principles：β rays are high-speed electron flows, through after certain thickness material, and ray portion is absorbed,
Its intensity decays therewith.How many of strength retrogression are relevant with the quality for being pierced material, and with other properties of the material（As
Decentralization, shape, color, the gloss of grain thing）It is unrelated.
Due to the particulate matter systematicness monitoring more developed country starting evening of China, related detection technique and instrument and equipment compared with
To be delayed.And China region is wide, the demand to monitoring instrument is larger.Although external monitoring device can be monitored in air
Particle concentration, but equipment is complex and price is high, and the testing result limited accuracy of domestic monitoring device, it is difficult to
Meet and require.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of simple in construction, with low cost, detection accuracy, reliable
The high particle concentration detection means of property.
In order to solve the above-mentioned technical problem, a kind of technical scheme of the utility model use is：A kind of particle concentration inspection
Survey device, including air particle cutter, sensor cluster and the asepwirator pump being sequentially connected.The air particle cutter
It is arranged in air ambient to be detected and its import and air communication.The sensor cluster includes being used to detect that particulate matter is dense
Chamber, β ray irradiations source, β-ray detector and the filter-paper-tape of degree.The upper and lower part of the chamber sequentially form air inlet and
Gas outlet, the air inlet is connected by air inlet pipe with air particle cutter, and the gas outlet passes through escape pipe and air-breathing
Pump is connected.The filter-paper-tape is laid in the chamber and can sealed the passage that air is flowed through, the β ray irradiations source and β
Ray detector sets up separately in the both sides of filter-paper-tape.When air-breathing pump work, air to be detected is through the import air inlet
In grain thing cutter, air particle cutter separates the partial particulate thing in air, and remaining particulate matter is with air
In the chamber for flowing into sensor cluster.Air circulates and is pumped out after passing through filter-paper-tape by air-breathing in the chamber, in air
Remaining particulate matter is captured by filter-paper-tape and laying dust amyloid plaque is formed on filter-paper-tape.The β ray irradiations source can launch β and penetrate
Line, the β-ray detector can measure the β transmitted intensities through filter-paper-tape in real time and then obtain the particulate matter of air to be detected
Mass concentration.
A kind of preferred, the air particle cutter is PM10 cutters, and the PM10 cutters can will be greater than
10 μm of particulate matter is separated from air, and the particulate matter less than or equal to 10 μm flows out with air from PM10 cutters, described
Sensor cluster can detect the PM10 concentration of air.
Another preferred, the air particle cutter is PM2.5 cutters, and the PM2.5 cutters can be by
Particulate matter more than 2.5 μm is separated from air, and the particulate matter less than or equal to 2.5 μm is with air from PM2.5 cutter streams
Go out, the sensor cluster can detect the PM2.5 concentration of air.
Further, it is additionally provided with heating and dehumidification in the gas circuit between the air particle cutter and sensor cluster
Device, the heating and dehumidification device can be heated to the air flowed through and remove the aqueous vapor in air.
Further, the sensor cluster includes filter-paper-tape pinch seal mechanism, the filter-paper-tape pinch seal mechanism
Including upper fixture and lower clamp, the chamber includes the upper chamber being opened in upper fixture and the cavity of resorption being opened in lower clamp
Room, the upper fixture is located at the top of filter-paper-tape, and the air inlet is opened in upper fixture and connected with upper chamber, the epicoele
Room forms under shed in the bottom of upper fixture, and the lower clamp is located at the lower section of filter-paper-tape, and the gas outlet is opened in lower clamp
Connect above and with lower chambers, the lower chambers form upper shed on the top of lower clamp, and the top of the lower clamp has can
Hold the upper transverse plane of filter-paper-tape, the filter-paper-tape horizontal transverse plane and covers the upper shed, the lower folder on described
Tool can be moved up and down, and the filter-paper-tape pinch seal mechanism, which has, to be clamped and releasing orientation, when the filter-paper-tape pinch seal
When mechanism is in clamped condition, the lower clamp is moved up and holding filter-paper-tape and moving up makes filter-paper-tape be against upper fixture
Bottom, the upper fixture and lower clamp clamp filter-paper-tape, and the filter-paper-tape seals the under shed and upper shed simultaneously, this
When could enter into the air of upper chamber through filter-paper-tape and lower chambers and discharge；When the filter-paper-tape pinch seal mechanism is in
During releasing orientation, the lower clamp is moved down and holding filter-paper-tape and moving down is released filter-paper-tape.
Specifically, the sensor cluster also includes that the cam mechanism that lower clamp is moved up and down, the cam can be driven
Mechanism includes coordinating the cam of linkage with lower clamp, and the cam rotation can drive lower clamp to move up and down.
Further, the particle concentration detection means also includes filter paper tape transport, the filter paper belt conveyor
Structure can transmit filter-paper-tape in left-right direction when filter-paper-tape pinch seal mechanism is in releasing orientation.
Specifically, the filter paper tape transport includes paper feeding rolling wheel, collection rolling wheel, pretension escapement and pre- bearing up pulley, it is described
Paper feeding rolling wheel and collection rolling wheel set up separately in the left and right sides of sensor cluster, and the filter-paper-tape is described on paper feeding rolling wheel
Filter-paper-tape is pulled out from paper feeding rolling wheel to be wound on through after sensor cluster on collection rolling wheel, and the pretension escapement passes through spring pressure
It is against on the filter-paper-tape near paper feeding rolling wheel, the pretension wheel is pressed against on the filter-paper-tape near collection rolling wheel, the pretension pendulum
Wheel and pre- bearing up pulley can tense filter-paper-tape between paper feeding rolling wheel and collection rolling wheel, and the paper feeding rolling wheel and collection rolling wheel are successively
Sensor cluster can be sent into filter-paper-tape and send out by rotating.
It is preferred that, there are multiple chambers, the filter-paper-tape sequentially passes through described multiple chambers in the sensor cluster,
Each chamber is correspondingly arranged on a β ray irradiations source and a β-ray detector, and the particle concentration detection means has multiple
Sense channel, described multiple sense channels can detect the particle concentration of a variety of particle diameters, and each sense channel includes one
Or a chamber of multiple air particle cutters, sensor cluster, filter-paper-tape, β ray irradiations source corresponding with the chamber
And β-ray detector, the air inlet of the chamber connects with corresponding air particle cutter, the asepwirator pump respectively with often
The gas outlet of individual chamber is connected.
It is referred to above to left and right on the inferior noun of locality, be when the particle concentration detection means normal is used
Orientation make to define.
Scope of the present utility model, however it is not limited to the technical scheme of the particular combination of above-mentioned technical characteristic, while
Other technical schemes as formed by being combined above-mentioned technical characteristic or its equivalent feature should be covered.Such as features described above
With it is disclosed herein（But it is not limited to）Technical characteristic with similar functions carries out technical scheme formed by replacement mutually
Deng.
Because above-mentioned technical proposal is used, the utility model has following advantages compared with prior art：Using air
Grain thing cutter carries out the separation of different diameter airborne particle in air, conveniently can subsequently be directed to the particles things concentration determined
Detection, detected using β ray irradiations source and β-ray detector, applicability is good.Particulate matter described in the utility model is dense
Spend structure of the detecting device simple, it is with low cost.Automatic detection, accuracy, reliability and the essence of testing result can be fully achieved
Degree is all very high, disclosure satisfy that existing air detection demand.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model particle concentration detection means embodiment one；
Fig. 2 is the partial sectional view in sensor cluster main view direction in embodiment one；
Fig. 3 is the partial sectional view in sensor cluster left view direction in embodiment one；
Fig. 4 is schematic perspective view when sensor cluster is detected；
Fig. 5 is front view when sensor cluster is detected；
Fig. 6 is top view when sensor cluster is detected；
Fig. 7 is the structural representation of the utility model particle concentration detection means embodiment one；
Wherein：1st, air particle cutter；2nd, sensor cluster；3rd, asepwirator pump；4th, air inlet pipe；5th, escape pipe；6th, add
Hot dehumidifier；7th, upper fixture；8th, lower clamp；9th, cam；11st, PM10 cutters；12nd, PM2.5 cutters；21st, chamber；22nd, β is penetrated
Line source；23rd, β-ray detector；24th, filter-paper-tape；71st, air inlet；72nd, under shed；81st, gas outlet；82nd, upper shed；83、
Upper transverse plane；100th, laying dust amyloid plaque；101st, paper feeding rolling wheel；102nd, collection rolling wheel；103rd, pretension escapement；104th, pre- bearing up pulley；200、
Roof；211st, upper chamber；212nd, lower chambers.
Embodiment
As shown in Figures 1 to 6, embodiment one：
A kind of particle concentration detection means described in the utility model, including the air particle cutter being sequentially connected
1st, heating and dehumidification device 6, sensor cluster 2, asepwirator pump 3 and filter paper tape transport.
In the present embodiment, the air particle cutter 1 is PM10 cutters 11.The PM10 cutters can will be big
Separated in 10 μm of particulate matters from air, the particulate matter less than or equal to 10 μm flows out with air from PM10 cutters 11.
The specific PM10 cutters with impingement illustrate the operation principle of PM10 cutters below：There are PM10 impacts in PM10 cutters
Orifice plate, when air with given pace by the PM10 impact orifice plates in the PM10 cutters, due to the particle size of particulate matter
It is different.Its movement inertia is also different, and particle diameter is less than 10 μm of particulate matter, due to inertia, is collected by the circular filter membranes of PM10
Get off, be so less than 10 μm of particulate matter and just entered by PM10 cutters in follow-up gas circuit.
The air particle cutter 1 is arranged in the air ambient outside the roof 200 of monitoring station and its import and sky
Gas is connected.The air particle cutter 1, heating and dehumidification device 6 and sensor cluster 2 pass sequentially through air inlet pipe 4 and connected.Except sky
Aerated particle thing cutter 1 is arranged on outside monitoring station, and the miscellaneous part of the particle concentration detection means is arranged at monitoring station
It is interior.The air inlet pipe 4 extends downwardly through roof 200 from air particle cutter 1 and is connected with heating and dehumidification device 6.It is described
Heating and dehumidification device 6 can be heated to the air flowed through and remove the aqueous vapor in air.So enter sensor group in air
It can keep drying and obtaining enough operating temperatures before part 2.
It is close that the sensor cluster 2 includes β ray irradiations source 22, β-ray detector 23, filter-paper-tape 24 and filter-paper-tape clamping
Sealing mechanism.
The filter-paper-tape pinch seal mechanism includes upper fixture 7 and lower clamp 8.The upper fixture 7 is located at filter-paper-tape 24
Top, the lower clamp 8 is located at the lower section of filter-paper-tape 24.Offered in the upper fixture 7 in upper chamber 211, the lower clamp 8
Offer lower chambers 212.The upper chamber 211 forms under shed 72 in the bottom of upper fixture 7, and the lower chambers 212 are in lower folder
Upper shed 82 is formed at the top of tool 8.Connect relative with upper shed 82 of the under shed 72 makes the upper chamber 211 and lower chambers
212 constitute the chamber 21 for detecting particle concentration.
The top of the upper fixture 7 offers the air inlet 71 connected with upper chamber 211, and the bottom of the lower clamp 8 is opened
Provided with the gas outlet 81 connected with lower chambers 212.The air inlet 71 is connected by air inlet pipe 4 with air particle cutter 1,
The gas outlet 81 is connected by escape pipe 5 with asepwirator pump 3.
The filter-paper-tape 23 is clipped between upper fixture 7 and lower clamp 8 and can seal under shed 72 and upper shed 82.Tool
Say, the top of the lower clamp 8, which has, can hold the upper transverse plane 83 of filter-paper-tape 24, and the horizontal of filter-paper-tape 24 is in institute body
State transverse plane 83 and cover the upper shed 82.The transmission mechanism of lower clamp 8 and one is connected with each other, drive transmission device
Motion can drive lower clamp 8 to move up and down.Because the structure of cam mechanism is relatively easy, the driver used in the present embodiment
Structure is cam mechanism.The cam mechanism includes the cam 9 for coordinating linkage with lower clamp 8, and the cam 9 is rotated and can driven down
Fixture 8 is moved up and down.Certainly, transmission mechanism is also an option that other kinds of structure is stably moved to meet lower clamp about 8
Dynamic demand.
The filter-paper-tape pinch seal mechanism, which has, to be clamped and releasing orientation.When the filter-paper-tape pinch seal mechanism is in
During clamped condition, the lower clamp 8 is moved up and holding filter-paper-tape 24 and moving up makes filter-paper-tape 24 be against under upper fixture 7
Portion, the upper fixture 7 and lower clamp 8 clamp filter-paper-tape 24, and the filter-paper-tape 24 is same by the under shed 72 and upper shed 82
When seal, now the air into upper chamber 211 could enter lower chambers 212 and be discharged from gas outlet 81 through filter-paper-tape 24.
When the filter-paper-tape pinch seal mechanism is in releasing orientation, the lower clamp 8 is moved down and to hold filter-paper-tape 24 downward
Movement makes filter-paper-tape 24 separate release with upper fixture 7.The utility model, which is only capable of being in filter-paper-tape pinch seal mechanism, clamps shape
The detection work of particle concentration could be carried out under state.
The β ray irradiations source 22 and β-ray detector 23 set up separately in the both sides of filter-paper-tape 24.In the present embodiment, the β
Ray irradiation source 22 is arranged on the β rays that in lower chambers 212 and β ray irradiations source 22 is launched by fixture and penetrated from upper shed 82
Go out.The β-ray detector 23 is arranged on the top of upper fixture 7 and penetrates in upper chamber 211 direction for being directed under shed 72.It is described
β-ray detector 23 can measure the β transmitted intensities through filter-paper-tape 24 in real time.
The filter paper tape transport can be when filter-paper-tape pinch seal mechanism be in releasing orientation, by the edge of filter-paper-tape 24
Left and right directions is transmitted.The effect of the filter paper tape transport is exactly that particle concentration detection means detection work is used
Filter-paper-tape is sent out sensor cluster 2 and new clean filter-paper-tape is sent into sensor cluster 2 and operated with the detection of after wait times.
The filter paper tape transport includes paper feeding rolling wheel 101, collection rolling wheel 102, pretension escapement 103 and pre- bearing up pulley 104.
The paper feeding rolling wheel 101 and collection rolling wheel 102 set up separately in the left and right sides of sensor cluster 2.Clean filter-paper-tape 24 wound on
On paper feeding rolling wheel 101, the filter-paper-tape 24 pulls out upper fixture 7 and lower clamp through in sensor cluster 2 from paper feeding rolling wheel 101
It is wound on behind space between 8 on collection rolling wheel 102.The pretension escapement 103 is pressed against near paper feeding rolling wheel 101 by spring
Filter-paper-tape 24 on, the pre- bearing up pulley 104 is pressed against on the filter-paper-tape 24 near collection rolling wheel 102.The He of pretension escapement 103
Pre- bearing up pulley 104 can tense filter-paper-tape 24 between paper feeding rolling wheel 101 and collection rolling wheel 102.The paper feeding rolling wheel 101 and receipts
Paper roll wheel 102 is rotated successively to send filter-paper-tape 24 into and send out sensor cluster 2.
The air particle cutter 1, air inlet pipe 4, chamber 21, escape pipe 5 and asepwirator pump 3 constitute of detection air
The sense channel of grain thing concentration.It is in filter-paper-tape pinch seal mechanism under releasing orientation, it is to be detected when asepwirator pump 3 works
Import of the air through air particle cutter 1 enter sense channel in.Air particle cutter 1 is by the particle diameter in air
Particulate separation more than 10 μm is gone out, and the particulate matter that particle diameter is less than or equal to 10 μm enters sensor cluster 2 with air flow
In chamber 21, air circulates in chamber 21 and suctioned out after passing through filter-paper-tape 24 by asepwirator pump 3.Air central diameter is less than or equal to 10 μm
Particulate matter captured by filter-paper-tape 24 and laying dust amyloid plaque 100 formed on filter-paper-tape 24.It is real-time according to the β-ray detector 23
The β transmitted intensities through filter-paper-tape 24 of measurement result in the particle PM10 of air to be detected mass concentration.
As shown in Figures 1 to 3, the detection side of particle concentration is carried out to air using above-mentioned particle concentration detection means
Method, is described in detail below：
1）The particle concentration detection means is in original state, and filter-paper-tape pinch seal mechanism is in releasing orientation,
Now, driving paper feeding rolling wheel 101 rotates the filter-paper-tape 24 that cleaning is sent into sensor cluster 2, specifically, paper feeding rolling wheel
101 rotate counterclockwise certain angle, and filter-paper-tape 24 relaxes, the side oscillation to the left under the action of the spring of pretension escapement 103, clean
Net filter-paper-tape 24 is drawn out one section of wait and is admitted in sensor cluster 2；
2）Driving collection rolling wheel 102 is rotated counterclockwise the pull-out of the used part of filter-paper-tape 24 from sensor cluster 2
And the clean filter-paper-tape 24 that paper feeding rolling wheel 101 is sent into sensor cluster 2 is evened up in sensor cluster 2；
3）Driving cam means are acted, and lower clamp 8 moves up the clean filter-paper-tape 24 for making support on lower clamp 8 and is against
The bottom of upper fixture 7, the filter-paper-tape 24 is clamped；
4）Atmospheric pressure P and air themperature T is recorded, β ray irradiations source 22 and β-ray detector 23 are opened, in tsTime
β transmitted intensity n1 of the β ray irradiations source 22 that inside persistently record β-ray detector 23 is detected through clean filter-paper-tape 24；
5）Asepwirator pump 3 is opened, asepwirator pump 3 is evacuated, start sampling, air enters from the import of air particle cutter 1
Air particle cutter 1, while the air humidity and temperature that control to enter in sensor cluster 2 by heating and dehumidification device 6, enter
The air for entering sensor cluster 2 sequentially passes through upper chamber 211, filter-paper-tape 24 and lower chambers 212 and suctioned out by asepwirator pump 3, described
Particulate matter of the particle diameter less than or equal to 10 μm is captured by filter-paper-tape 24 in air, is terminated by t time samplings, is worn in the record t times
The volume of air V of filter paper band 24；
6）After sampling terminates, in tsThe β ray irradiations source 22 that the detection of β-ray detector 23 is persistently recorded in time passes through filter
The β transmitted intensities n2 of paper tape 24；
7）Calculated according to the area s of laying dust amyloid plaque 100 on filter-paper-tape 24 and the quality after recording filter-paper-tape 24 before sampling
Changes delta m；
8）It is dense according to the particulate matter that the mass change Δ m of filter-paper-tape 24 before and after volume of air V and sampling calculates acquisition air
Angle value C.
Δ m and particle concentration value C are calculated according to following formula：
（Formula 1）；
（Formula 2）；
Wherein：k：Quality coefficient；s：The area of laying dust amyloid plaque 100；q：The flow of sampled air；n1：Through clean filter
The β transmitted intensities of paper tape；n2：Through the β transmitted intensities of the filter-paper-tape with laying dust amyloid plaque 100；t：Sampling time；T：Air Temperature
Degree：p：Atmospheric pressure.
Certainly, on the basis of above-described embodiment, the air particle cutter 1 can be also selected as PM2.5 cutters,
The particulate matter that the PM2.5 cutters can will be greater than 2.5 μm is separated from air, the particulate matter less than or equal to 2.5 μm
Flowed out with air from PM2.5 cutters, the sensor cluster 2 can detect the PM2.5 concentration of air.
As shown in fig. 7, embodiment two：
Embodiment two is the change carried out on the basis of embodiment one, will single source detection be changed to multi-source detection.This reality
Apply example and use double source detection.I.e. embodiment two has two sense channels.One is used to detect the first of PM10 concentration
Sense channel, another is used for the second sense channel for detecting PM2.5 concentration.
Specifically, two chambers 21 are arranged with left-right direction in the sensor cluster 2.One chamber 21 is used to examine
PM10 concentration is surveyed, another chamber 21 is used for the concentration for detecting PM2.5.The filter-paper-tape 24 sequentially passes through two described chambers
Room 21.Each chamber 21 is correspondingly arranged on a β ray irradiations source 22 and a β-ray detector 23.Each sense channel includes one
Individual or multiple air particle cutters 1, a chamber 21 of sensor cluster 2, filter-paper-tape 24, with the corresponding β of the chamber 21
Ray irradiation source 22 and β-ray detector 23, the air inlet 71 of the chamber 21 connect with corresponding air particle cutter 1
Connect, gas outlet 81 of the asepwirator pump 3 respectively with each chamber 21 is connected.Specifically, the first sense channel and embodiment one
Unanimously.There are two air particle cutters 1 being sequentially connected, the respectively He of PM10 cutters 11 in second sense channel
PM2.5 cutters 12, air is entered back into follow-up sensor cluster 2 through PM10 cutters 11, PM2.5 cutters 12 successively.
Second sense channel is different from the sense channel of embodiment one except air particle cutter 1, remaining detection with embodiment one
Passage is consistent.Two sense channels share an asepwirator pump 3.The present embodiment can detect simultaneously PM10 concentration and PM2.5 it is dense
Degree.
From two above-mentioned embodiments, particle concentration structure of the detecting device described in the utility model is simple, into
This is cheap.Pass through the setting and the setting of filter paper tape transport of upper fixture 7 and lower clamp 8 in sensor cluster 2, filter-paper-tape
24 Automatic-clamping and transmission, can fully achieve automatic detection, and accuracy, reliability and the precision of testing result are all very high,
It disclosure satisfy that existing air detection demand.
As described above, we are illustrated fully according to objective of the present utility model, but the utility model not limits to
In above-described embodiment and implementation.The scope that the practitioner of correlative technology field can permit in technological thought of the present utility model
It is interior to carry out different changes and implementation.
Claims (9)
1. a kind of particle concentration detection means, it is characterised in that：Including the air particle cutter being sequentially connected（1）, pass
Sensor component（2）And asepwirator pump（3）, the air particle cutter（1）It is arranged in air ambient to be detected and it enters
Mouth and air communication, the sensor cluster（2）Including the chamber for detecting particle concentration（21）, β ray irradiations source
（22）, β-ray detector（23）And filter-paper-tape（24）, the chamber（21）Upper and lower part sequentially form air inlet（71）With
Gas outlet（81）, the air inlet（71）Pass through air inlet pipe（4）With air particle cutter（1）It is connected, the gas outlet
（81）Pass through escape pipe（5）With asepwirator pump（3）It is connected, the filter-paper-tape（24）It is laid in the chamber（21）It is interior and can be by air
The passage flowed through is sealed, the β ray irradiations source（22）And β-ray detector（23）Set up separately in filter-paper-tape（24）Both sides, when
Asepwirator pump（3）During work, air to be detected is through the import air inlet cutter for particles（1）In, air particle is cut
Cutter（1）Partial particulate thing in air is separated, remaining particulate matter enters sensor cluster with air flow（2）'s
Chamber（21）In, air is in chamber（21）Middle circulation simultaneously passes through filter-paper-tape（24）Afterwards by asepwirator pump（3）Suction out, it is remaining in air
Particulate matter is by filter-paper-tape（24）Capture and in filter-paper-tape（24）Upper formation laying dust amyloid plaque（100）, the β ray irradiations source（22）Energy
Enough launch β rays, the β-ray detector（23）It can measure in real time through filter-paper-tape（24）β transmitted intensities so that obtain
Obtain the particulate matter quality concentration of air to be detected.
2. a kind of particle concentration detection means according to claim 1, it is characterised in that：The air particle cutting
Device（1）For PM10 cutters（11）, the PM10 cutters（11）The particulate matter that 10 μm can be will be greater than is isolated from air
Come, particulate matter less than or equal to 10 μm is with air from PM10 cutters（11）Outflow, the sensor cluster（2）Sky can be detected
The PM10 concentration of gas.
3. a kind of particle concentration detection means according to claim 1, it is characterised in that：The air particle cutting
Device（1）For PM2.5 cutters（12）, the PM2.5 cutters（12）The particulate matter that 2.5 μm can be will be greater than is separated from air
Out, the particulate matter less than or equal to 2.5 μm with air from PM2.5 cutters（12）Outflow, the sensor cluster（2）It can examine
Survey the PM2.5 concentration of air.
4. a kind of particle concentration detection means according to claim 1, it is characterised in that：The air particle cutting
Device（1）And sensor cluster（2）Between gas circuit in be additionally provided with heating and dehumidification device（6）, the heating and dehumidification device（6）Can be right
The air flowed through is heated and removes the aqueous vapor in air.
5. a kind of particle concentration detection means according to claim 1, it is characterised in that：The sensor cluster（2）
Including filter-paper-tape pinch seal mechanism, the filter-paper-tape pinch seal mechanism includes upper fixture（7）And lower clamp（8）, the chamber
Room（21）Including being opened in upper fixture（7）Interior upper chamber（211）Be opened in lower clamp（8）Interior lower chambers（212）, it is described
Upper fixture（7）Positioned at filter-paper-tape（24）Top, the air inlet（71）It is opened in upper fixture（7）Upper and and upper chamber（211）
Connection, the upper chamber（211）In upper fixture（7）Bottom formed under shed（72）, the lower clamp（8）Positioned at filter-paper-tape
（24）Lower section, the gas outlet（81）It is opened in lower clamp（8）Upper and and lower chambers（212）Connection, the lower chambers（212）
In lower clamp（8）Top formed upper shed（82）, the lower clamp（8）Top have can hold filter-paper-tape（24）It is upper
Transverse plane（83）, the filter-paper-tape（24）Horizontal transverse plane on described（83）And by the upper shed（82）Capping, it is described under
Fixture（8）It can move up and down, the filter-paper-tape pinch seal mechanism, which has, to be clamped and releasing orientation, when the filter-paper-tape is clamped
When sealing mechanism is in clamped condition, the lower clamp（8）Move up and hold filter-paper-tape（24）Moving up makes filter-paper-tape
（24）It is against upper fixture（7）Bottom, the upper fixture（7）And lower clamp（8）By filter-paper-tape（24）Clamp, the filter-paper-tape
（24）By the under shed（72）And upper shed（82）Seal simultaneously, now into upper chamber（211）Air pass through filter-paper-tape
（24）Lower chambers could be entered（212）And discharge；When the filter-paper-tape pinch seal mechanism is in releasing orientation, the lower folder
Tool（8）Move down and hold filter-paper-tape（24）Moving down makes filter-paper-tape（24）It is released.
6. a kind of particle concentration detection means according to claim 5, it is characterised in that：The sensor cluster（2）
Also include that lower clamp can be driven（8）The cam mechanism moved up and down, the cam mechanism includes and lower clamp（8）Coordinate linkage
Cam（9）, the cam（9）Rotation can drive lower clamp（8）Move up and down.
7. a kind of particle concentration detection means according to claim 5, it is characterised in that：The particle concentration detection
Device also includes filter paper tape transport, and the filter paper tape transport can be in filter-paper-tape pinch seal mechanism unclamps shape
During state, by filter-paper-tape（24）Transmit in left-right direction.
8. a kind of particle concentration detection means according to claim 7, it is characterised in that：The filter paper tape transport
Including paper feeding rolling wheel（101）, collection rolling wheel（102）, pretension escapement（103）With pre- bearing up pulley（104）, the paper feeding rolling wheel（101）
With collection rolling wheel（102）Set up separately in sensor cluster（2）The left and right sides, the filter-paper-tape（24）Wound on paper feeding rolling wheel
（101）On, the filter-paper-tape（24）From paper feeding rolling wheel（101）It is upper to pull out through sensor cluster（2）After be wound on collection rolling wheel
（102）On, the pretension escapement（103）Paper feeding rolling wheel is pressed against by spring（101）Neighbouring filter-paper-tape（24）On, it is described pre-
Bearing up pulley（104）It is pressed against collection rolling wheel（102）Neighbouring filter-paper-tape（24）On, the pretension escapement（103）With pre- bearing up pulley（104）
Can be by filter-paper-tape（24）Tense in paper feeding rolling wheel（101）With collection rolling wheel（102）Between, the paper feeding rolling wheel（101）And receipts
Paper roll wheel（102）Rotating successively can be by filter-paper-tape（24）Feeding and submitting sensor cluster（2）.
9. a kind of particle concentration detection means according to claim 1, it is characterised in that：The sensor cluster（2）
It is interior that there are multiple chambers（21）, the filter-paper-tape（24）Sequentially pass through described multiple chambers（21）, each chamber（21）Correspondence
It is provided with a β ray irradiations source（22）With a β-ray detector（23）, the particle concentration detection means has multiple detections
Passage, described multiple sense channels can detect the particle concentration of a variety of particle diameters, and each sense channel includes one or many
Individual air particle cutter（1）, sensor cluster（2）A chamber（21）, filter-paper-tape（24）And the chamber（21）Correspondence
β ray irradiations source（22）And β-ray detector（23）, the chamber（21）Air inlet（71）With corresponding air particle
Cutter（1）Connection, the asepwirator pump（3）Respectively with each chamber（21）Gas outlet（81）It is connected.
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| CN201720137286.7U CN206420734U (en) | 2017-02-15 | 2017-02-15 | A kind of particle concentration detection means |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106769741A (en) * | 2017-02-15 | 2017-05-31 | 江苏苏净集团有限公司 | A kind of particle concentration detection means and detection method |
| CN107966332A (en) * | 2017-11-21 | 2018-04-27 | 宇星科技发展(深圳)有限公司 | Particulate matter detection means and its circuit |
| CN109085026A (en) * | 2018-10-22 | 2018-12-25 | 武汉怡特环保科技有限公司 | A kind of particle sampling device and β ray method atmosphere particle monitoring equipment |
| CN111024573A (en) * | 2019-12-30 | 2020-04-17 | 安徽安光环境科技有限公司 | Sampling and detecting device of β ray method atmospheric particulates monitor |
| CN114414449A (en) * | 2022-01-25 | 2022-04-29 | 四川大学 | Novel intelligent occupational health real-time detection device |
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2017
- 2017-02-15 CN CN201720137286.7U patent/CN206420734U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106769741A (en) * | 2017-02-15 | 2017-05-31 | 江苏苏净集团有限公司 | A kind of particle concentration detection means and detection method |
| CN106769741B (en) * | 2017-02-15 | 2024-03-08 | 江苏苏净集团有限公司 | Particulate matter concentration detection device and detection method |
| CN107966332A (en) * | 2017-11-21 | 2018-04-27 | 宇星科技发展(深圳)有限公司 | Particulate matter detection means and its circuit |
| CN109085026A (en) * | 2018-10-22 | 2018-12-25 | 武汉怡特环保科技有限公司 | A kind of particle sampling device and β ray method atmosphere particle monitoring equipment |
| CN109085026B (en) * | 2018-10-22 | 2024-03-19 | 武汉怡特环保科技有限公司 | Particulate matter sampling device and beta-ray method atmospheric particulate matter monitoring equipment |
| CN111024573A (en) * | 2019-12-30 | 2020-04-17 | 安徽安光环境科技有限公司 | Sampling and detecting device of β ray method atmospheric particulates monitor |
| CN114414449A (en) * | 2022-01-25 | 2022-04-29 | 四川大学 | Novel intelligent occupational health real-time detection device |
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