CN206504981U - A kind of apparatus for measuring dust concentration - Google Patents
A kind of apparatus for measuring dust concentration Download PDFInfo
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- CN206504981U CN206504981U CN201720152082.0U CN201720152082U CN206504981U CN 206504981 U CN206504981 U CN 206504981U CN 201720152082 U CN201720152082 U CN 201720152082U CN 206504981 U CN206504981 U CN 206504981U
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Abstract
The utility model discloses a kind of apparatus for measuring dust concentration, including dust cavity, the sampling cavity for gathering dust connected with dust cavity, the sampling pipe in sampling cavity, the blower fan connected with dust cavity, the laser tube for irradiating blower fan in sampling pipe, the support member between sampling pipe and sampling cavity, the filter layer that the measuring mechanism of dust concentration, the light irradiated for transmission laser pipe between measuring mechanism and dust cavity and reflected white-light are measured located at being used between cavity and blower fan of sampling connected with dust cavity.Shunk along opposite direction taper and form dust inlet and dust outlet respectively in the two ends of sampling cavity；Sampling pipe shrinks away from one end of dust cavity along the direction taper away from dust cavity；Measuring mechanism is located above the light path that laser tube irradiates.A kind of apparatus for measuring dust concentration of the utility model, has prevented the interference of white light in environment substantially, and the dust concentration in environment accurately can be measured.
Description
Technical field
The utility model is related to a kind of apparatus for measuring dust concentration.
Background technology
Dust refers to the aerial solia particle that suspends.Traditionally there are many titles, such as dust, dust, cigarette to dust
Dirt, mine dust, sand dust, powder etc..In live and work, industrial dust is the natural enemy of human health, is to induce a variety of diseases
Main cause.Dust concentration in workshop is too high or even can also set off an explosion.
Therefore the accurate detection to dust concentration can prevent the generation of these contingencies.
Utility model content
The purpose of this utility model is to provide a kind of apparatus for measuring dust concentration, can substantially prevent white light in environment
Interference, is accurately measured the dust concentration in environment.
To reach above-mentioned purpose, the technical solution adopted in the utility model is：
A kind of apparatus for measuring dust concentration, including：
Dust cavity；
The sampling cavity for being used to gather dust connected with the dust cavity；The two ends of the sampling cavity are along opposite
Direction taper is shunk and forms dust inlet and dust outlet respectively；
Sampling pipe in the sampling cavity, the sampling pipe is away from one end of the dust cavity along away from described
The direction taper of dust cavity is shunk；
The blower fan connected with the dust cavity；
Being used in the sampling pipe irradiates the laser tube of the blower fan；
Support member between the sampling pipe and the sampling cavity；
Being used between the sampling cavity and the blower fan connected with the dust cavity measures dust concentration
Measuring mechanism；The measuring mechanism is located above the light path that the laser tube irradiates；
Being used between the measuring mechanism and the dust cavity transmit laser tube irradiation light and
Reflect the filter layer of white light in the dust cavity.
Preferably, the filter layer includes being used in the light and the dust cavity that transmit the laser tube irradiation in vain
The glassy layer of light, plating are located at the light and the reflection powder that are used to transmit the laser tube irradiation of the glassy layer upper surface
The film layer of white light in dirt cavity.
It is highly preferred that the dust cavity is provided with the through hole connected with the measuring mechanism, the filter layer is covered
The through hole.
Preferably, the sampling pipe is received close to one end of the dust cavity along the direction taper close to the dust cavity
Contract to form light path outlet.
Preferably, the measuring mechanism include light intensity sensor, photoelectric conversion unit, for the light intensity sensor and
The photoelectric conversion unit carries out housing of the shading sealedly above the dust cavity.
Led it is highly preferred that the measuring mechanism also includes being located at being used in the dust cavity for the light intensity sensor
The light pipe of light.
It is highly preferred that the apparatus for measuring dust concentration with the photoelectric conversion unit circuit also including being connected for showing
Show the control panel of measured value.
Preferably, the apparatus for measuring dust concentration also includes being located at being used between the dust cavity and the blower fan
That discharges dust in the dust cavity goes out sample cavity, it is described go out sample cavity bottom shrink to be formed provided with taper in the upward direction
Taper light shielding part.
It is highly preferred that the dust cavity close to it is described go out sample cavity one end inside be provided with along close to it is described go out sample cavity
The taper reflecting part that shrinks of direction taper, the taper reflecting part be provided with it is described go out the light path outgoing that connects of sample cavity
Mouthful.
Preferably, the apparatus for measuring dust concentration also include being located in the dust inlet along close to the sampling pipe
The extension for shading extended away from one end of the dust cavity, the extension deviates from the powder with the sampling pipe
Gap distribution between one end of dirt cavity.
Due to the utilization of above-mentioned technical proposal, the utility model has following advantages compared with prior art：This practicality is new
A kind of apparatus for measuring dust concentration of type, by setting the two ends for cavity of sampling to be shunk along opposite direction taper and forming powder respectively
Dirt entrance and dust outlet, and set sampling pipe to be received away from one end of dust cavity along the direction taper away from dust cavity
Contracting, and filter layer is set；Substantially the interference of white light in environment has been prevented, the dust concentration in environment can have been carried out accurately
Measurement.
Brief description of the drawings
Accompanying drawing 1 is the structural representation of the utility model device.
Wherein：1st, dust cavity；2nd, sampling cavity；3rd, dust inlet；4th, dust outlet；5th, sampling pipe；6th, blower fan；7th, swash
Light pipe；8th, support member；9th, light path is exported；10th, light intensity sensor；11st, photoelectric conversion unit；12nd, housing；13rd, light pipe；14、
Go out sample cavity；15th, taper light shielding part；16th, taper reflecting part；17th, light path exit portal；18th, extension；19th, filter layer.
Embodiment
Come to be further elaborated the technical solution of the utility model below in conjunction with the accompanying drawings.
It is shown in Figure 1, above-mentioned a kind of apparatus for measuring dust concentration, for the dust concentration in measuring environment.
The sampling for being used to gather dust that the apparatus for measuring dust concentration includes dust cavity 1, connected with the dust cavity 1
Cavity 2.The left end of the sampling cavity 2（With reference to Fig. 1, the left in Fig. 1 is left end here）Received along direction taper to the left
Contracting, and cylindricality through hole is formed at axle center, the cylindricality through hole is dust inlet 3.The right-hand member of the sampling cavity 2（With reference to Fig. 1,
Right in Fig. 1 is right-hand member here）Shunk along direction taper to the right, and form at axle center another cylindricality through hole,
Another cylindricality through hole is dust outlet 4.
The dust cavity 1 and sampling cavity 2 use black epoxy material, play the effect of shading.
The apparatus for measuring dust concentration includes the sampling pipe 5 in sampling cavity 2, and the left end of the sampling pipe 5 is along to the left
Direction taper pinch confinement, to prevent the white light in external environment condition from entering.
Blower fan 6 that the apparatus for measuring dust concentration includes connect with dust cavity 1, in sampling pipe 5 for irradiating
The laser tube 7 of the blower fan 6, the support member 8 between the outer wall of sampling pipe 5 and the sampling inwall of cavity 2.The blower fan 6 is used to pass through
Sampling cavity 2 extracts the dust in the external world.The laser tube 7 is used to irradiate infrared light.The hollow out of support member 8 is set, for making dust
Into in dust cavity 1.The right-hand member of the sampling pipe 5 is shunk along direction taper to the right, and one cylindricality of formation is led at axle center
Hole, the cylindricality through hole is light path outlet 9, and light path outlet 9 is located in dust outlet 4.When blower fan 6 works, go out in the light path
A malleation is formed in mouth 9, the light source of dust pollution laser tube 7 is prevented.
The apparatus for measuring dust concentration also includes being located at the edge in dust inlet 3 towards extension at the left end cone angle of sampling pipe 5
Extension 18, the extension 18 is used to further prevent outside white light from entering in sampling cavity 2, and the extension 18 is overall
In a ring, gap distribution between the extension 18 and the left end cone angle of sampling pipe 5.
The apparatus for measuring dust concentration also includes the use between sampling cavity 2 and blower fan 6 connected with dust cavity 1
In the measuring mechanism of measurement dust concentration, the measuring mechanism is located at the top for the infrared ray light path that laser tube 7 irradiates.
The measuring mechanism includes the light intensity sensor 10 and the electricity of light intensity sensor 10 for receiving infrared-ray light intensity signal
What road was connected is used to convert optical signals into the photoelectric conversion unit 11 of electric signal, for the light intensity sensor 10 and the photoelectricity
Converting unit 11 carries out the sealed housing 12 of shading, and the housing 12 uses black epoxy material encapsulation, and the housing 12 is sealed
Located at the top of dust cavity 1.The measuring mechanism also includes the energy amplifying circuit for being used to amplify optical signal.
In order that measurement result is more accurate, the measuring mechanism also includes being located at being used for for light intensity biography in dust cavity 1
The guide-lighting light pipe 13 of sensor 10, the light pipe 13 is vertically distributed in dust cavity 1, the upper end of the light pipe 13 with
Elongated hole is connected, and positioned at the underface of light intensity sensor 10, the lower end of the light pipe 13 is located at the infrared ray that laser tube 7 irradiates
Lu Zhong.
The apparatus for measuring dust concentration is also included located at the filter layer 19 between measuring mechanism and dust cavity 1, the filtering
Layer 19 is located in housing 12, and positioned at the lower section of light intensity sensor 10, the filter layer 19 is used for transmitted infrared light and reflection dust
The white light of directive light intensity sensor 10 in cavity 1.In the present embodiment, the filter layer 19 includes being used for transmitted infrared light and white light
Glassy layer, plating be used for the film layer of white light in transmitted infrared light and reflection dust cavity 1 located at the glassy layer upper surface.
The dust cavity 1 is provided with the through hole connected with measuring mechanism, and the through hole is elongated hole.The overall covering of the filter layer 19
The firmly elongated hole.When blower fan 6 works, a malleation is formed between filter layer 19 and the upper end of light pipe 13, dust pollution light is prevented
Strong sensor 10.
In order to further prevent dust pollution light intensity sensor 10, rubber is provided between the filter layer 19 and housing 12
Sealing ring.
In order to intuitively show measurement structure, the apparatus for measuring dust concentration also includes connecting with the circuit of photoelectric conversion unit 11
The control panel for being used to show measured value connect.The control for switching and adjusting blower fan 6 and laser tube 7 is set on the control panel
Button.
The apparatus for measuring dust concentration also includes discharging in dust cavity 1 located at being used between dust cavity 1 and blower fan 6
Dust goes out sample cavity 14, and this goes out the bottom of sample cavity 14 and shrinks the taper light shielding part 15 to be formed provided with taper in the upward direction.
By setting the taper light shielding part 15, it can prevent the white light in external environment condition from entering in dust cavity 1, influence measurement result,
This goes out sample cavity 14 and the taper light shielding part 15 and uses black epoxy material, plays the effect of shading.
The taper reflecting part 16 shunk along direction taper to the right, taper reflection are provided with inside the right-hand member of dust cavity 1
The center in portion 16 is provided with going out the light path exit portal 17 that sample cavity 14 is connected.By setting the taper reflecting part 16 so that parallel
When infrared light enters the back reflection time dust cavity 1 of sample cavity 14, the part light source for producing scattering is stopped and separated.
The course of work of lower the present embodiment is illustrated in detail below：
Start blower fan 6 and laser tube 7, measured value is zeroed；Then place a device into environment to be measured, dust according to
It is secondary to pass through sampling cavity 2, dust cavity 1, go out sample cavity 14；When dust enters in dust cavity 1, dust is dissipated to light
Penetrate, the light intensity increase for measuring light intensity sensor 10 now shows measurement result on control panel.
Above-described embodiment is only to illustrate technical concepts and features of the present utility model, and its object is to allow be familiar with technique
Personage can understand content of the present utility model and be carried out, protection domain of the present utility model can not be limited with this,
All equivalent change or modifications made according to the utility model Spirit Essence, should all cover in protection domain of the present utility model
It is interior.
Claims (10)
1. a kind of apparatus for measuring dust concentration, it is characterised in that：Including：
Dust cavity；
The sampling cavity for being used to gather dust connected with the dust cavity；The two ends of the sampling cavity are along opposite direction
Taper is shunk and forms dust inlet and dust outlet respectively；
Sampling pipe in the sampling cavity, the sampling pipe is away from one end of the dust cavity along away from the dust
The direction taper of cavity is shunk；
The blower fan connected with the dust cavity；
Being used in the sampling pipe irradiates the laser tube of the blower fan；
Support member between the sampling pipe and the sampling cavity；
Being used between the sampling cavity and the blower fan connected with the dust cavity measures the survey of dust concentration
Measuring mechanism；The measuring mechanism is located above the light path that the laser tube irradiates；
Being used between the measuring mechanism and the dust cavity transmits light and the reflection of the laser tube irradiation
The filter layer of white light in the dust cavity.
2. a kind of apparatus for measuring dust concentration according to claim 1, it is characterised in that：The filter layer includes being used for thoroughly
Penetrate the glassy layer of white light, plating in the light and the dust cavity of the laser tube irradiation and be located at the glassy layer upper surface
The film layer of white light in light and the reflection dust cavity for transmiting the laser tube irradiation.
3. a kind of apparatus for measuring dust concentration according to claim 2, it is characterised in that：The dust cavity be provided with
The through hole of the measuring mechanism connection, the filter layer covers the through hole.
4. a kind of apparatus for measuring dust concentration according to claim 1, it is characterised in that：The sampling pipe is close to the powder
Shunk along the direction taper close to the dust cavity and form light path outlet in one end of dirt cavity.
5. a kind of apparatus for measuring dust concentration according to claim 1, it is characterised in that：The measuring mechanism includes light intensity
Sensor, photoelectric conversion unit, sealedly it is located at for carrying out shading to the light intensity sensor and the photoelectric conversion unit
Housing above the dust cavity.
6. a kind of apparatus for measuring dust concentration according to claim 5, it is characterised in that：The measuring mechanism also includes setting
Being used for for the guide-lighting light pipe of the light intensity sensor in the dust cavity.
7. a kind of apparatus for measuring dust concentration according to claim 5, it is characterised in that：The apparatus for measuring dust concentration
Also include the control panel for being used to show measured value being connected with the photoelectric conversion unit circuit.
8. a kind of apparatus for measuring dust concentration according to claim 1, it is characterised in that：The apparatus for measuring dust concentration
Also include located at being used between the dust cavity and the blower fan discharge dust in the dust cavity go out sample cavity, institute
State out sample cavity bottom and shrink the taper light shielding part to be formed provided with taper in the upward direction.
9. a kind of apparatus for measuring dust concentration according to claim 8, it is characterised in that：The dust cavity is close to described
Go out inside one end of sample cavity the taper reflecting part for being provided with and being shunk along the direction taper for going out sample cavity described in, the taper is anti-
Penetrate portion be provided with it is described go out the light path exit portal that connects of sample cavity.
10. a kind of apparatus for measuring dust concentration according to claim 1, it is characterised in that：The powder concentration measurement dress
Putting also includes being located at being used for along one end extension for deviating from the dust cavity close to the sampling pipe in the dust inlet
The extension of shading, the extension and the sampling pipe gap distribution between one end of the dust cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720152082.0U CN206504981U (en) | 2017-02-20 | 2017-02-20 | A kind of apparatus for measuring dust concentration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720152082.0U CN206504981U (en) | 2017-02-20 | 2017-02-20 | A kind of apparatus for measuring dust concentration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206504981U true CN206504981U (en) | 2017-09-19 |
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ID=59833993
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720152082.0U Active CN206504981U (en) | 2017-02-20 | 2017-02-20 | A kind of apparatus for measuring dust concentration |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106680168A (en) * | 2017-02-20 | 2017-05-17 | 常熟市顺欣仪器仪表有限公司 | Dust concentration measuring device |
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2017
- 2017-02-20 CN CN201720152082.0U patent/CN206504981U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106680168A (en) * | 2017-02-20 | 2017-05-17 | 常熟市顺欣仪器仪表有限公司 | Dust concentration measuring device |
| CN106680168B (en) * | 2017-02-20 | 2023-10-27 | 常熟市顺欣仪器仪表有限公司 | Dust concentration measuring device |
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