CN206772780U - A kind of dust particle sensor sample stream air protection device - Google Patents
A kind of dust particle sensor sample stream air protection device Download PDFInfo
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- CN206772780U CN206772780U CN201720367939.0U CN201720367939U CN206772780U CN 206772780 U CN206772780 U CN 206772780U CN 201720367939 U CN201720367939 U CN 201720367939U CN 206772780 U CN206772780 U CN 206772780U
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- mouth
- dust particle
- particle sensor
- pedestal
- protection device
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Abstract
It the utility model is related to a kind of dust particle sensor sample stream air protection device; the dust particle sensor has body; the protection device includes top nozzle seat, including can install pedestal on the body, through pedestal and the tracheae that can be stretched into body cavity and the air inlet being arranged on pedestal；Nozzle cage, including body, through body and the through hole that can be passed through for the tracheae, the body end is inserted into being uniformly provided with some circular holes connected with the through hole and air inlet in the pedestal and on the periphery of the body end.The utility model is passed through sample gas by tracheae, clean gas is passed through nozzle cage by upper adapter through air inlet; clean gas parcel sample gas is set to carry out outer layer covers to sample gas by nozzle cage; sampling air flow can be stablized; ensure that gas does not spread in intracavitary; ensure that under test gas will not remain in intracavitary, certain protective role is played to sensor component.
Description
Technical field
It the utility model is related to a kind of airborne particle counter, more particularly to a kind of dust particle sensor sample gas
Flow air conservation device.
Background technology
As people are for the higher and higher requirement in toilet, the requirement for airborne particle counter sampling flow is also
More and more higher.But improving sampling flow simply can cause sampling air flow to spread, and turbulent flow phenomenon occur, so as to influence to count
The counting efficiency and accuracy rate of number device.It is by air inlet pipe flattening to this in general technological treatment, reduces pipeline Reynolds number,
Keep laminar condition.
Turbulence does not occur during in order to ensure big sampling flow, more processing is by air inlet pipe leading portion flattening, is gone out
Tracheae is still pipe.But air inlet pipe flattening has the following disadvantages：
1st, the flat processing of valve needs certain precision, and tool acquires a certain degree of difficulty；
2nd, laminar condition is kept by reducing pipeline Reynolds number, once sampling flow further increases, then Reynolds number is corresponding
Increase, so as to turbulent flow occur；
3rd, sensor for countering intracavitary may remain a small amount of measurement gas, may corrode intraluminal device.
In view of it is above-mentioned the defects of, the design people, be actively subject to research and innovation, to found a kind of dust of new structure
Particle counting sensor sampling air flow air conservation device, make it with more the value in industry.
Utility model content
In order to solve the above technical problems, the purpose of this utility model is to provide a kind of dust particle sensor sample gas
Air conservation device is flowed, while there can be certain sampling flow ensureing counter, keep sampling air flow stable, it is ensured that treat
Intracavitary will not be remained in by surveying gas, and certain protective role is played to sensor component.
Dust particle sensor sample stream air protection device of the present utility model, the dust particle pass
Sensor has body, and the protection device includes
- top nozzle seat, including pedestal on the body can be installed, through pedestal and the gas that can stretch into body cavity
Pipe and the air inlet being arranged on pedestal；
- nozzle cage, including body, through body and the through hole that can be passed through for the tracheae, the body end can
Insert in the pedestal and some circular holes connected with the through hole and air inlet are uniformly provided with the periphery of the body end.
Further, in addition to upper adapter connects mouth with, wherein
- the upper adapter includes the first mouth body, is arranged in the first mouth body end portion and is inserted into the gas of the air inlet
Mouth and through the first mouth body and the stomata of valve；
- it is described under connect mouth include can be arranged on the body gas outlet at and the second hollow mouth body.
Further, the first mouth of the body of the nozzle cage and upper adapter is additionally provided with for placing O-ring on external week
Annular groove.
Further, the flange being connected with the body is also arranged with the periphery for the second mouth body for connecing mouth under described.
Further, six circular holes are uniformly provided with the periphery of the body end.
By such scheme, the utility model is passed through sample gas by tracheae, upper adapter leads to clean gas through air inlet
Enter nozzle cage, clean gas is wrapped up sample gas by nozzle cage, at least with advantages below：
1st, outer layer covers are carried out to sample gas, sampling air flow can be stablized, it is ensured that gas does not spread in intracavitary；
2nd, Reynolds will not be caused because of the further raising of sampling flow compared to by air inlet pipe flattening, the utility model
Number increase, is not in turbulent flow phenomenon；
3rd, internal layer sample gas being wrapped up using outer layer pure air, sample gas will not remain in sensor cavity,
So as to avoid the corrosion to device；
4th, can force dust particle in sampling air flow concentrate from photosensitive district center it is more uniform from by improving indirectly
The uniform intensity degree of photosensitive area.
Described above is only the general introduction of technical solutions of the utility model, in order to better understand skill of the present utility model
Art means, and being practiced according to the content of specification, with preferred embodiment of the present utility model and coordinate accompanying drawing detailed below
Describe in detail bright as after.
Brief description of the drawings
Fig. 1 is the structure sectional view after the utility model installation；
Fig. 2 is the structure sectional view of top nozzle seat in the utility model；
Fig. 3 is the structure sectional view of nozzle cage in the utility model；
Fig. 4 is the structure sectional view of upper adapter in the utility model；
Fig. 5 be in the utility model under connect the structure sectional view of mouth.
Embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below
Embodiment is used to illustrate the utility model, but is not limited to the scope of the utility model.
Referring to Fig. 1 to Fig. 5, a kind of dust particle sensor sample gas described in the preferred embodiment of the utility model one
Air conservation device is flowed, the dust particle sensor has body 10, and protection device of the present utility model includes top nozzle
Seat 20, nozzle cage 30, upper adapter 40 and under connect mouth 50, wherein top nozzle seat 20 includes the pedestal that can be arranged on body 10
21st, through pedestal 21 and the tracheae 22 of the intracavitary of body 10 and the air inlet 23 being arranged on pedestal 21 can be stretched into；Nozzle cage 30
Including body 31, through body 31 and can the through hole 32 that passes through of air supply pipe 22, the end of body 31 is inserted into pedestal 21 simultaneously
Six circular holes 33 connected with through hole 32 and air inlet 23 are uniformly provided with the end periphery of body 31；Upper adapter 40 includes first
Mouth body 41, the valve 42 for being arranged on the end of the first mouth body 41 and being inserted into air inlet 23 and through the first mouth body 41 and
The stomata 43 of valve 42；Under connect mouth 50 include can be arranged on body 10 gas outlet at and the second hollow mouth body 51.
Sample gas to be measured is from the tracheae 22 in top nozzle seat 20 by the way that nozzle cage 30 and upper adapter 40 are assembled in top nozzle
On seat 20, the pure air to shield enters from upper adapter 40, and six then through nozzle cage 30 circular hole 33 flows into sensing
Device intracavitary, at this moment pure air is to the peripheral stabilization wrapped up protection, ensure air-flow of under test gas progress；Under connect mouth 50 and be connected on out
At gas port, sample gas and pure air are discharged.
In order to ensure air-tightness, the utility model is in the body 31 of nozzle cage 30 and the periphery of the first mouth body 41 of upper adapter 40
On be additionally provided with annular groove 34,44 for placing O-ring, avoid residual gas in the cavity of sensor and corrosion sensor.
Preferably it is arranged on to connect mouth 50 under making on body 10, the utility model connects the outer of the second mouth body 51 of mouth 50 under
The flange 52 being connected with body 10 is also arranged with week.
When carrying out sample count using dust particle sensor, by top nozzle seat 20, nozzle cage 30, upper adapter 40
Mouth 50 is connect with as described above on the body 10 of sensor for countering, the sebific duct on set on upper adapter 20, by tracheae
22 are passed through sample gas, clean gas is passed through nozzle cage 30 by upper adapter 40 through air inlet 23, make pure gas by nozzle cage 30
Body wraps up sample gas, carries out outer layer covers to sample gas, can stablize sampling air flow, it is ensured that gas does not expand in intracavitary
Dissipate, it is ensured that under test gas will not remain in intracavitary, and certain protective role is played to sensor component.
Described above is only preferred embodiment of the present utility model, is not limited to the utility model, it is noted that
For those skilled in the art, on the premise of the utility model technical principle is not departed from, can also do
Go out some improvement and modification, these improvement and modification also should be regarded as the scope of protection of the utility model.
Claims (5)
1. a kind of dust particle sensor sample stream air protection device, the dust particle sensor has this
Body, it is characterised in that：Including
- top nozzle seat, including can install pedestal on the body, through pedestal and can stretch into body cavity tracheae,
And it is arranged on the air inlet on pedestal；
- nozzle cage, including body, through body and the through hole that can be passed through for the tracheae, the body end is inserted into
Some circular holes connected with the through hole and air inlet are uniformly provided with the pedestal and on the periphery of the body end.
2. dust particle sensor sample stream air protection device according to claim 1, it is characterised in that：Also
Mouth is connect with including upper adapter, wherein
- the upper adapter includes the first mouth body, is arranged in the first mouth body end portion and is inserted into the air inlet valve, with
And through the first mouth body and the stomata of valve；
- it is described under connect mouth include can be arranged on the body gas outlet at and the second hollow mouth body.
3. dust particle sensor sample stream air protection device according to claim 2, it is characterised in that：Institute
State the annular groove being additionally provided with the first mouth external week of the body and upper adapter of nozzle cage for placing O-ring.
4. dust particle sensor sample stream air protection device according to claim 2, it is characterised in that：Institute
State down and be also arranged with the flange being connected with the body on the periphery for the second mouth body for connecing mouth.
5. the dust particle sensor sample stream air protection device according to claim any one of 1-4, it is special
Sign is：Six circular holes are uniformly provided with the periphery of the body end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720367939.0U CN206772780U (en) | 2017-04-10 | 2017-04-10 | A kind of dust particle sensor sample stream air protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720367939.0U CN206772780U (en) | 2017-04-10 | 2017-04-10 | A kind of dust particle sensor sample stream air protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206772780U true CN206772780U (en) | 2017-12-19 |
Family
ID=60631109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720367939.0U Active CN206772780U (en) | 2017-04-10 | 2017-04-10 | A kind of dust particle sensor sample stream air protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206772780U (en) |
-
2017
- 2017-04-10 CN CN201720367939.0U patent/CN206772780U/en active Active
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