CN2251721Y - Laser tester for investigating particle size - Google Patents
Laser tester for investigating particle size Download PDFInfo
- Publication number
- CN2251721Y CN2251721Y CN 95242069 CN95242069U CN2251721Y CN 2251721 Y CN2251721 Y CN 2251721Y CN 95242069 CN95242069 CN 95242069 CN 95242069 U CN95242069 U CN 95242069U CN 2251721 Y CN2251721 Y CN 2251721Y
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- CN
- China
- Prior art keywords
- laser
- tester
- particle size
- utility
- model
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The utility model relates to a laser tester for investigating particle sizes. On the basis of the existing laser diffraction type tester for investigating particle sizes, the tester of the utility model is additionally provided with a wave side scattering optical detection system for detecting the scattering light generated when the laser is irradiated on measured particles, so the lower limit of the detection of the tester can reach below 1.9 micrometre. The utility model is suitable for all organic and inorganic particle test specimen, and the testing and the output and the printing of the result can be completed only within 3-5 minutes.
Description
The utility model is about the instrument of laser particle size distribution tests.
Along with the development of particulate crushing technology, scientific research, production all press for the granularity of ultra-fine grain are tested, especially particle below 1.9 microns.And existing laser diffraction formula particle size distribution test instrument detects owing to only laser being impinged upon the diffraction light that produces on the tested particle, and is therefore very big at test particle time error below 1.9 microns, can not satisfy its needs.
The purpose of this utility model provides a kind ofly can accurately test the laser particle analyzer of the size-grade distribution of particle below 1.9 microns.
This particle size analyzer that the utility model provides is to increase the measurement range that the detection that laser is impinged upon the scattered light that produces on the tested particle enlarges existing laser diffraction formula particle size distribution test instrument on the basis of existing laser diffraction formula particle size distribution test instrument, reduce the test lower limit, and then realize the accurate test of 1.9 microns following particle size distribution.
This particle size analyzer that the utility model provides is by laser instrument and be positioned at parts such as short focus lens behind the laser instrument, Guang Lan, long focus lens, sample cell, diffraction light amasthenic lens, diffraction light photoelectric conversion device successively and form, and also has the transportable ripple sidescattering optical detection system of being made up of scattered light amasthenic lens, scattered light photoelectric conversion device in position at the upside of sample cell.
After amplifying, import computing machine and handle by diffraction light photoelectric conversion device, scattered light photoelectric conversion device institute electrical signal converted, can draw test result in 3～5 minutes.
Short focus lens, Guang Lan, long focus lens constitute parallel beam expand device, and the laser beam that laser instrument is sent becomes parallel rays.
Diffraction light amasthenic lens, diffraction light photoelectric conversion device constitute the diffraction light detection system.
Scattered light amasthenic lens, scattered light photoelectric conversion device constitute ripple sidescattering optical detection system.Because ripple sidescattering direction of light is changeable, therefore the ripple sidescattering optical detection system that is made of scattered light amasthenic lens, scattered light photoelectric conversion device is transportable, both away from or move near the upper and lower of sample cell, also can be to be the movement in a curve of the garden heart with the sample cell.
The advantage of this particle size analyzer that the utility model provides is: owing to increased position-movable ripple sidescattering optical detection system on the basis of existing laser diffraction formula particle size distribution test instrument, the measurement range lower limit of instrument can reach particle below 1.9 microns.
Accompanying drawing is the light path and the structural representation of this particle size analyzer that provides of the utility model.Wherein, laser instrument (1), laser beam (2), short focus lens (3), light hurdle (14), long focus lens (4), directional light (5), sample cell (13), sample particle (12), diffracted ray (11), diffraction light amasthenic lens (9), diffraction light photoelectric conversion device (10), scattered beam (8), scattered light amasthenic lens (7), scattered light photoelectric conversion device (6).
A kind of course of work of this particle size distribution test instrument that the utility model provides is as follows: the parallel beam expand device that the laser beam (2) that laser instrument (1) sends is formed via short focus lens (3), light hurdle (14), long focus lens (4) expands restraints into directional light (5), directional light (5) is radiated on the interior sample particle (12) of sample cell (13) then, produce diffracted ray (11) on the one hand, and through being radiated at behind the diffraction light amasthenic lens (9) on the diffraction light photoelectric conversion device (10), the electric signal of generation is imported Computer Processing after amplifying; The scattered beam of Chan Shenging (8) on the other hand, through being radiated at behind the scattered light amasthenic lens (7) on the scattered light photoelectric conversion device (6), the electric signal of generation is imported Computer Processing after amplifying.Can on graphoscope, show and go out test result by printer prints.
Claims (1)
- A kind of laser particle analyzer, by laser instrument (1), and the short focus lens (3), light hurdle (14), long focus lens (4), sample cell (13), diffraction light amasthenic lens (9), the diffraction light photoelectric conversion device parts such as (10) that are positioned at successively behind the laser instrument (1) form, it is characterized in that: the upside of sample cell (13) has the transportable ripple sidescattering optical detection system of being made up of scattered light amasthenic lens (7), scattered light photoelectric conversion device (6) in position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95242069 CN2251721Y (en) | 1995-08-28 | 1995-08-28 | Laser tester for investigating particle size |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95242069 CN2251721Y (en) | 1995-08-28 | 1995-08-28 | Laser tester for investigating particle size |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2251721Y true CN2251721Y (en) | 1997-04-09 |
Family
ID=33883103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95242069 Expired - Fee Related CN2251721Y (en) | 1995-08-28 | 1995-08-28 | Laser tester for investigating particle size |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2251721Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100344956C (en) * | 2002-09-27 | 2007-10-24 | 理音株式会社 | Flow cell and particle measurement device using same |
| CN102192868A (en) * | 2010-02-26 | 2011-09-21 | 株式会社堀场制作所 | Particle size distribution measuring device |
| CN102735596A (en) * | 2012-06-28 | 2012-10-17 | 河北工业大学 | Laser particle sizer for eliminating center spot of receiving plane |
| CN103069265A (en) * | 2010-08-27 | 2013-04-24 | 艾斯特希斯株式会社 | Particle diameter measurement device, and particle diameter measurement method |
| WO2013185620A1 (en) * | 2012-06-14 | 2013-12-19 | 南京中医药大学 | Nano-particle identification system device and identification method thereof |
-
1995
- 1995-08-28 CN CN 95242069 patent/CN2251721Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100344956C (en) * | 2002-09-27 | 2007-10-24 | 理音株式会社 | Flow cell and particle measurement device using same |
| CN102192868A (en) * | 2010-02-26 | 2011-09-21 | 株式会社堀场制作所 | Particle size distribution measuring device |
| US9297736B2 (en) | 2010-02-26 | 2016-03-29 | Horiba, Ltd. | Particle size distribution measuring device |
| CN103069265A (en) * | 2010-08-27 | 2013-04-24 | 艾斯特希斯株式会社 | Particle diameter measurement device, and particle diameter measurement method |
| CN103069265B (en) * | 2010-08-27 | 2015-05-27 | 艾斯特希斯株式会社 | Particle diameter measurement device, and particle diameter measurement method |
| WO2013185620A1 (en) * | 2012-06-14 | 2013-12-19 | 南京中医药大学 | Nano-particle identification system device and identification method thereof |
| CN102735596A (en) * | 2012-06-28 | 2012-10-17 | 河北工业大学 | Laser particle sizer for eliminating center spot of receiving plane |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |