CN202166591U - Aerial fog negative-pressure protection device for spray particle analyzer - Google Patents
Aerial fog negative-pressure protection device for spray particle analyzer Download PDFInfo
- Publication number
- CN202166591U CN202166591U CN2011202676491U CN201120267649U CN202166591U CN 202166591 U CN202166591 U CN 202166591U CN 2011202676491 U CN2011202676491 U CN 2011202676491U CN 201120267649 U CN201120267649 U CN 201120267649U CN 202166591 U CN202166591 U CN 202166591U
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- measuring tube
- light
- aerial fog
- aerosol
- spray nozzle
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Abstract
The utility model provides an aerial fog negative-pressure protection device for a spray particle analyzer, which belongs to the field of particle analyzing instruments and structurally comprises a measuring tube, a spray nozzle, an air conduit, and an air source. A light-in hole and a light-emitting hole are correspondingly formed on the side wall of the measuring tube, the one or more than one spray nozzle is arranged on the inner wall of the measuring tube and the airflow jet direction of the spray nozzle is opposite to an aerial fog outlet, and the air conduit communicated with the spray nozzle is further arranged on the side wall of the measuring tube and is connected with the air source. When the aerial fog passes the measuring tube, laser irradiates fogdrops through the light-in hole, and the scattered light is received by a lens through the light-emitting hole; clean airflow coming from the air source is jetted at a high speed from the spray nozzle through the air conduit, and a negative-pressure area with a certain range is formed in the measuring tube; and the attraction power of the high-speed airflow to the aerial fog can prevent the aerial fog from escaping from the light-in hole and the light-emitting hole, so as to prevent the fogdrops from adhering to the lens to influence test. With no volume increase compared with conventional equipment, the protection capability of the equipment (particularly the lens) to the aerial fog is enhanced, so that the protection device provided by the utility model can provide effective protection to a light path.
Description
(1) technical field
The utility model relates to a kind of sreen analysis instrument, specifically a kind of granularity of spray appearance aerosol negative pressure protective device.
(2) background technology
The granularity of spray appearance is to be used for the specialized equipment of mist droplet granularity in the detected gas specially.Present granularity of spray appearance does not have the aerosol protective device, may influence the correctness of experimental data attached on the camera lens after the aerosol ejection.
(3) summary of the invention
The technical assignment of the utility model is the deficiency to prior art, and a kind of gas circuit protection structure is provided, and utilizes air draught aerosol (sample) to be played the granularity of spray appearance aerosol negative pressure protective device of the effect of drainage.
The utility model solves the technical scheme that its technical matters adopted:
Granularity of spray appearance aerosol negative pressure protective device; Comprise measuring tube; Correspondence offers light well and light hole on the sidewall of measuring tube, and the inwall of measuring tube is provided with one or above nozzle, and the air-flow emission direction of nozzle is towards the aerosol Way out; On the sidewall of measuring tube, also be provided with the air conduit that communicates with nozzle, air conduit and source of the gas join.
Above-mentioned granularity of spray appearance aerosol negative pressure protective device, its light well and light hole are positioned at the middle part of measuring tube.
Above-mentioned granularity of spray appearance aerosol negative pressure protective device, the air-flow spout of its nozzle is positioned at the rear of light well and light hole, and the crossing point of axes of the axis of nozzle and measuring tube is positioned at measuring tube.
Above-mentioned granularity of spray appearance aerosol negative pressure protective device, its source of the gas is a fan blower.
The granularity of spray appearance aerosol negative pressure protective device of the utility model compared with prior art, the beneficial effect that is produced is:
The utility model is reasonable in design, simple in structure, convenient and practical, is applied on the granularity of spray appearance, under the prerequisite that does not increase existing instrument volume, has strengthened the protective capacities of equipment (especially camera lens) for aerosol, to light path effective protection is provided.
(4) description of drawings
Accompanying drawing 1 is the main TV structure synoptic diagram of the utility model;
Accompanying drawing 2 is the left TV structure synoptic diagram of Fig. 1.
Among the figure, 1, measuring tube, 2, nozzle, 3, air conduit, 4, source of the gas, 5, light well, 6, light hole, 7, lens.
(5) embodiment
Below in conjunction with explanation at length below the granularity of spray appearance aerosol negative pressure protective device work of 1,2 pairs of the utility model of accompanying drawing.
Like accompanying drawing 1, shown in 2, the granularity of spray appearance aerosol negative pressure protective device of the utility model, its structure comprises measuring tube 1; Be positioned at that correspondence offers light well 5 and light hole 6 on the sidewall at measuring tube 1 middle part; The inwall of measuring tube 1 is provided with one or above nozzle 2, and the air-flow spout of nozzle 2 is positioned at the rear of light well 5 and light hole 6, and the crossing point of axes of the axis of nozzle 2 and measuring tube 1 is positioned at measuring tube 1; The air-flow emission direction that makes nozzle 2 is towards the aerosol Way out; On the sidewall of measuring tube 1, also be provided with the air conduit 3 that communicates with nozzle 2, air conduit 3 joins with source of the gas 4, and source of the gas 4 is a fan blower.
When aerosol passed through measuring tube 1, laser was through light well 5 irradiation droplets, and scattered light is received by lens 7 through light hole 6; Clean gas flow from source of the gas 4 sprays at a high speed from nozzle 2 through air conduit 3; In measuring tube 1, form the negative pressure region of certain limit; High velocity air can prevent aerosol from light well 5, light hole 6 effusions to the attractive force of aerosol, thereby avoids droplet attached to influence test on the camera lens 7.
Its processing and fabricating of granularity of spray appearance aerosol negative pressure protective device of the utility model is simple and convenient, and processing and fabricating gets final product shown in the by specification accompanying drawing.
Except that the described technical characterictic of instructions, be the known technology of those skilled in the art.
Claims (4)
1. granularity of spray appearance aerosol negative pressure protective device; Comprise measuring tube (1), correspondence offers light well (5) and light hole (6) on the sidewall of measuring tube (1), it is characterized in that; The inwall of measuring tube (1) is provided with one or above nozzle (2); And the air-flow emission direction of nozzle (2) also is provided with the air conduit (3) that communicates with nozzle (2) towards the aerosol Way out on the sidewall of measuring tube (1), and air conduit (3) joins with source of the gas (4).
2. granularity of spray appearance aerosol negative pressure protective device according to claim 1 is characterized in that light well (5) and light hole (6) are positioned at the middle part of measuring tube (1).
3. granularity of spray appearance aerosol negative pressure protective device according to claim 1; It is characterized in that; The air-flow spout of nozzle (2) is positioned at the rear of light well (5) and light hole (6), and the crossing point of axes of the axis of nozzle (2) and measuring tube (1) is positioned at measuring tube (1).
4. granularity of spray appearance aerosol negative pressure protective device according to claim 1 is characterized in that source of the gas (4) is a fan blower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202676491U CN202166591U (en) | 2011-07-26 | 2011-07-26 | Aerial fog negative-pressure protection device for spray particle analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202676491U CN202166591U (en) | 2011-07-26 | 2011-07-26 | Aerial fog negative-pressure protection device for spray particle analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202166591U true CN202166591U (en) | 2012-03-14 |
Family
ID=45802408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202676491U Expired - Fee Related CN202166591U (en) | 2011-07-26 | 2011-07-26 | Aerial fog negative-pressure protection device for spray particle analyzer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202166591U (en) |
-
2011
- 2011-07-26 CN CN2011202676491U patent/CN202166591U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120314 Termination date: 20170726 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |