CN208076357U - Particle collector is closed in cohesion - Google Patents
Particle collector is closed in cohesion Download PDFInfo
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- CN208076357U CN208076357U CN201820227003.2U CN201820227003U CN208076357U CN 208076357 U CN208076357 U CN 208076357U CN 201820227003 U CN201820227003 U CN 201820227003U CN 208076357 U CN208076357 U CN 208076357U
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- particle
- lens group
- light
- dust particle
- photodetector
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Abstract
The utility model discloses a kind of cohesions to close particle collector, including lasing light emitter, the first lens group and measurement chamber；The measurement chamber includes hot saturator and condenser；The laser that the lasing light emitter generates is projected by the first lens group measures one light sensitive area of intracavitary formation, when the dust particle in tested air-flow is continuously pumped into measurement chamber, first make its saturation with butanol steam in hot saturator, then dust particle and butanol steam pass through condenser, dust particle is as polymeric core, butanol steam condensation forms solidifying aggregated particles on dust particle surface, the solidifying aggregated particles scatter a part of light energy when passing through light sensitive area, are collected by the second lens group with the angled setting of incident light；Second lens group projects the light energy being collected on photodetector；The light energy of scattering is converted to electric signal by the photodetector；The electric signal is amplified output by the amplification circuit module, and the utility model keeps the detection of dust particle more convenient, reliably.
Description
Technical field
The utility model is related to a kind of detection of dust particle is more convenient, particle collector is closed in reliable cohesion.
Background technology
Particle collector is the instrument for measuring airborne and particle diameter distribution in unit volume in clean environment.It
It can be widely applied to as each province and city medicine inspecting institute, Blood Center, epidemic prevention station, Disease Control and Prevention Center, quality surveillance Suo Deng authoritative institutions, electronics
The manufacturing enterprises such as industry, medicament compartment, semiconductor, optics or precision machinery processing, plastic cement, spray painting, hospital, environmental protection, inspection institute
And scientific research department.
Particle collector is the special instrument for the particles size and distribution for testing dirt in air particle granules, is developed by microscope
, experienced microscope, sedimentation pipe, sedimentometer, centrifugal sedimentation instrument, particle collector, laser airborne particle counter, condensation
The processes such as nuclear particle counter, Multi-channel multifunctional corpuscular counter are now widely used for as each province and city medicine inspecting institute, blood
Center, epidemic prevention station, Disease Control and Prevention Center, quality surveillance Suo Deng authoritative institutions, electronics industry, medicament compartment, semiconductor, optics or precision
The manufacturing enterprises such as mechanical processing, plastic cement, spray painting, hospital, environmental protection, inspection institute and scientific research department.
Particle collector is classified as follows:
1, it is divided by test philosophy：Light scattering method test, microscopic method test, weight method test, DMA methods test grain size point
Analyzer, the test of inertia method, diffusion method test, the test of condensation nucleus method etc..
2, it is divided by flow：Small flow 0.1cfm (2.83L/min), big flow 1cfm (28.3L/min).
3, it is divided by shape, volume size：It is hand-held, desk-top.
4, it is divided by TCH test channel：Only survey the single channel of a certain particle diameter；Test the binary channels of certain two kinds of particle diameter；It surveys
Try the multichannel of a variety of particle diameters.
Convenience, the reliability of the detection of existing particle collector are bad, cannot meet growing needs, be
This, we have developed, and a kind of detection of dust particle is more convenient, and particle collector is closed in reliable cohesion.
Utility model content
The utility model aim is for overcome the deficiencies in the prior art and to provide a kind of detection of dust particle more square
Just, particle collector is closed in reliable cohesion.
In order to achieve the above objectives, the technical solution adopted in the utility model is：A kind of cohesion conjunction particle collector, packet are provided
Containing lasing light emitter, the first lens group and measure chamber；The measurement chamber includes hot saturator and condenser；State the laser of lasing light emitter generation
Measurement intracavitary is projected by the first lens group, a light sensitive area is formed, when the dust particle in tested air-flow is continuously taken out
Into chamber is measured, first make its saturation with butanol steam in hot saturator, then dust particle and butanol steam pass through condenser, dirt
Angstrom particle is as polymeric core, and butanol steam condensation forms solidifying aggregated particles on dust particle surface, and the solidifying aggregated particles pass through
When light sensitive area, a part of light energy can be scattered, is collected by the second lens group with the angled setting of incident light；Described second
Lens group projects the light energy being collected on photodetector；The light energy of scattering is converted to telecommunications by the photodetector
Number；The photodetector is electrically connected with the amplification circuit module；The telecommunications that the amplification circuit module generates photodetector
It number is amplified, exports, obtaining the pulse signal of the grain size comprising airborne and solidifying aggregated particles.
Preferably, the temperature of the hot saturator is 35 degrees Celsius.
Preferably, the cooling temperature of the condenser is 10 degrees Celsius.
Due to the application of the above technical scheme, the utility model has following advantages compared with prior art：
Cohesion described in the utility model closes particle collector and is additionally arranged hot saturator and condenser, makes the inspection of dust particle
Survey it is more convenient, reliably；It is simple in structure simultaneously, convenient for adjusting and dismounting, control intuitive feature.
Description of the drawings
Technical solutions of the utility model are described further below in conjunction with the accompanying drawings：
Attached drawing 1 is the fundamental diagram that particle collector is closed in cohesion described in the utility model;
Wherein：1, lasing light emitter；2, the first lens group；3, chamber is measured；5, hot saturator；6, condenser；7, the second lens group；
8, photoelectric detector；9, amplification circuit module.
Specific implementation mode
Below in conjunction with the accompanying drawings and specific embodiment the utility model is described in further detail.
Particle collector is closed in cohesion described in the utility model, including lasing light emitter 1, the first lens group 2 and measurement chamber 3；Institute
It includes hot saturator 5 and condenser 6 to state and measure chamber 3；The lasing light emitter 1 generates light monochromatic, that stability is high；First lens
Lasing light emitter 1 is projected and is measured in chamber 3 by group 2；The measurement chamber 3 forms a light sensitive area under the irradiation of lasing light emitter 1, works as quilt
The dust particle surveyed in air-flow, which is continuously pumped into, measures chamber 3, and keeps it full with butanol steam in 35 degrees Celsius of hot saturator 5
With then dust particle and butanol steam lead to overcooled 10 degrees Celsius of condenser 6, and dust particle is as polymeric core, butanol
Steam condensation forms solidifying aggregated particles on dust particle surface, this process will be such that the grain size of individually solidifying aggregated particles increases to about
10 microns, when the dust particle that these are increased passes through light sensitive area, a part of light energy can be scattered, by with incident light at
Second lens group 7 of angle setting is collected；Second lens group 7 projects the light energy being collected on photodetector 8；Institute
It states photodetector 8 and the light energy of scattering is converted into electric signal；The telecommunications that the amplification circuit module 9 generates photodetector 8
It number is amplified, exports, obtaining the pulse signal of the grain size comprising airborne and solidifying aggregated particles.
Cohesion described in the utility model closes particle collector using light scattering method test dust particle concentration and size.Base
Present principles are as follows:Particle in air can scatter under the irradiation of light, and this phenomenon is light scattering.Light scattering and particle are big
Small, optical wavelength, particulate refractive index and particle are related to factors such as the absorption characteristics of light.But it is big with regard to scattered light intensity and particle
For small, there are one basic laws, be exactly the intensity of Particle Scattering light increases with the surface area of particle and is increased.As long as surveying in this way
Surely the intensity of scattering light can deduce the size of particle, be exactly the basic principle of light scattering type particle counter.In fact, each
The scattered light intensity that particle generates is very weak, is the light pulse of a very little, the amplification by photoelectric converter is needed, light
Pulse is converted into the larger electric pulse of signal amplitude, then being further amplified and screening using electronic circuit, to complete
To the Counts of a large amount of electric pulses.At this point, electric pulse quantity corresponds to the number of particle, the amplitude of electric pulse corresponds to particle
Size.
Due to the application of the above technical scheme, the utility model has following advantages compared with prior art：
Cohesion described in the utility model closes particle collector and is additionally arranged hot saturator and condenser, makes the inspection of dust particle
Survey it is more convenient, reliably；It is simple in structure simultaneously, convenient for adjusting and dismounting, control intuitive feature.
The specific application example that the above is only the utility model does not constitute the scope of protection of the utility model any limit
System.Any technical scheme formed by adopting equivalent transformation or equivalent replacement, all fall within the utility model rights protection scope it
It is interior.
Claims (3)
1. particle collector is closed in cohesion, including lasing light emitter, the first lens group and measurement chamber；It is characterized in that：The measurement chamber packet
Include hot saturator and condenser；The laser that the lasing light emitter generates projects measurement intracavitary by the first lens group, forms one
Light sensitive area, when the dust particle in tested air-flow is continuously pumped into measurement chamber, elder generation makes it in hot saturator with butanol steam
Saturation, then dust particle and butanol steam are by condenser, and dust particle is as polymeric core, and butanol steam condensation is in dust grain
Sublist face forms solidifying aggregated particles can scatter a part of light energy when the solidifying aggregated particles pass through light sensitive area, by with enter
The second lens group for penetrating the angled setting of light is collected；The light energy being collected into is projected photodetector by second lens group
On；The light energy of scattering is converted to electric signal by the photodetector；The photodetector is electrically connected with amplification circuit module；Institute
It states amplification circuit module to be amplified the electric signal that photodetector generates, export, obtains closing comprising airborne and cohesion
The pulse signal of the grain size of particle.
2. particle collector is closed in cohesion according to claim 1, it is characterised in that：The temperature of the hot saturator is taken the photograph for 35
Family name's degree.
3. particle collector is closed in cohesion according to claim 1, it is characterised in that：The cooling temperature of the condenser is 10
Degree Celsius.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820227003.2U CN208076357U (en) | 2018-02-08 | 2018-02-08 | Particle collector is closed in cohesion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820227003.2U CN208076357U (en) | 2018-02-08 | 2018-02-08 | Particle collector is closed in cohesion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208076357U true CN208076357U (en) | 2018-11-09 |
Family
ID=64037580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820227003.2U Active CN208076357U (en) | 2018-02-08 | 2018-02-08 | Particle collector is closed in cohesion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208076357U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113720749A (en) * | 2021-08-31 | 2021-11-30 | 北京航空航天大学 | Wide temperature range nano-particle counter |
-
2018
- 2018-02-08 CN CN201820227003.2U patent/CN208076357U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113720749A (en) * | 2021-08-31 | 2021-11-30 | 北京航空航天大学 | Wide temperature range nano-particle counter |
| CN113720749B (en) * | 2021-08-31 | 2023-01-17 | 北京航空航天大学 | Wide temperature range nano-particle counter |
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