CN2645076Y - Laser particles size distribution tester - Google Patents
Laser particles size distribution tester Download PDFInfo
- Publication number
- CN2645076Y CN2645076Y CN 03252937 CN03252937U CN2645076Y CN 2645076 Y CN2645076 Y CN 2645076Y CN 03252937 CN03252937 CN 03252937 CN 03252937 U CN03252937 U CN 03252937U CN 2645076 Y CN2645076 Y CN 2645076Y
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- powder
- size distribution
- test
- particle size
- utility
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Abstract
The utility model relates to a particle size distribution tester, in particular to a laser particle size distribution tester. The utility model uses a sampling dispersion device with a compressed gas inlet and a powder nozzle to disperse and transport the testing sample in the dry way before the test. The utility model overcomes the disadvantage that a plurality of powders has difficulty in dispersing into the suitable liquid medium in the wet dispersion technique so that the powders which do not have the suitable dispersion medium can be tested by the laser particle size distribution tester. The utility model exempts the instrument from the after-test clean and consequently makes the testing process faster and the operation easier.
Description
The utility model is about the particle size distribution tester, especially about laser particle particle size distribution test instrument.
In existing particle size distribution measuring technology, method commonly used has sieve method, sedimentation, laser particle size distributed test method, as described in the patent No. 90214729.3 " laser diffraction formula particle size distribution test instrument ".Sieve method is that a kind of dry method is disperseed sample, and the method that sample is carried out the particle size distribution test, and because of being subjected to the influence of sub-sieve mesh size, powder reuniting, at superfines (particle diameter less than 500 orders time), its use is restricted; Sedimentation and existing laser particle size distributed test method, use wet method to disperse sample mostly, promptly earlier sample to be tested water or other liquid mediums are evenly disperseed, test then, because a lot of powders are difficult to find suitable liquid medium to satisfy the needs that it carried out the test of particle size distribution, so that test can't be carried out.
Task of the present utility model provides a kind of dry method and carries out the laser particle particle size distribution test instrument that sample disperses.
Task of the present utility model is to realize like this, promptly on the basis of existing laser particle size distribution tests instrument, with sampling diverting device with pressure gas inlet, powder jet pipe, come the tested sample before testing is carried out the dry method gas dispersion, and the powder waste gas that contains after testing is carried out the separation of gas powder, reclaims powder with powder separation device.Its principle is to utilize swiftly flowing gas evenly to disperse, carry tested sample to carry out particle size distribution test to testing the storehouse.
This laser particle particle size distribution test instrument that the utility model provides by the laser beam expanding device and test storehouse, condenser lens, photoelectric conversion device after being installed on successively and be installed on test storehouse one side, by powder jet pipe and test storehouse sampling diverting device that connect, that have the pressure gas inlet, be installed on test storehouse opposite side, the relative powder separation device of diverting device is formed with taking a sample.The directional light that the laser beam expanding device produces, being radiated at the sampling diverting device evenly disperses with flow at high speed gas and is delivered on the tested powder of testing the storehouse by the powder jet pipe, parallel beam produces diffraction, scattering, its diffraction light, scattered light are through behind the condenser lens, be radiated on the photoelectric conversion device, convert light signal to electric signal, the input Computer Processing can draw test result after amplifying.The powder waste gas that contains after the test is inhaled into powder separation device and carries out the gas powder and separate, reclaim powder.
The effect of laser beam expanding device is to produce laser, and laser beam is become directional light, and its front end is equipped with laser instrument, and front end optical lens light hurdle, optical lens light hurdle, rear end are housed subsequently successively.
The effect in test storehouse is the mixture of tested powder of carrying and pressure gas, and its front end is equipped with the laser beam expanding device, and a side is equipped with the powder jet pipe, and opposite side is installed powder separation device, and is not contaminated to guarantee environment.
The effect of condenser lens is that the light beam by the test storehouse is focused on.
The effect of photoelectric conversion device is to convert light signal to electric signal.
The effect of powder jet pipe is that the test storehouse is carried, sprayed into to the homodisperse tested sample of compressed gas, and its front end is connected with the sampling diverting device, and its end is connected with the test storehouse.Its endpiece is flat.
The effect of sampling diverting device is to draw, evenly disperse tested sample with swiftly flowing pressure gas, and carries tested sample to testing the storehouse by the powder jet pipe.By pressure gas inlet and the variable nozzle A after being installed on the pressure gas inlet, disperse chamber A, powder jet pipe, for the powder groove, disperse chamber B, powder absorbing pipe, variable nozzle B to form.Wherein, be positioned at the lower end of powder absorbing pipe for the powder groove, there is groove at the middle part, splendid attire powder to be measured, and horizontal motion at the uniform velocity is to realize evenly for powder, to withdraw from the dress powder; The effect of pressure gas inlet is the input pressure gas, and air commonly used also can use inert gas, is used for dispersion, the conveying of special powder such as explosive; The effect of variable nozzle A and variable nozzle B is by dwindling sectional area, producing swiftly flowing gas; Disperseing chamber A and disperseing the effect of chamber B is to aspirate powder to be measured, also evenly disperse by negative pressure; Powder absorbing pipe is to enter the passage that disperses chamber B for the powder in the powder groove.
The effect of powder separation device is gas, the powder that contains behind the discrete testing in the powder waste gas, and reclaims powder.Are made up of isolated by filtration chamber, cyclone separating chamber's two major parts, the centre is separated by dividing plate; Exhaust gas inlet is arranged at the top in cyclone separating chamber, and its effect is inwardly to suck waste gas, adopts the cyclonic separation air intake structure; Useless powder escape hole is arranged at the bottom of cyclone separating chamber, and the powder that will give up enters in the useless powder container; At the center of dividing plate the cyclonic separation escape pipe is housed, its effect is that the gas that contains a small amount of powder after cyclonic separation enters the isolated by filtration chamber; The isolated by filtration chamber is positioned at the top of powder separation device, and filtrator is housed, and the powder gas that contains after cyclonic separation is carried out the gas powder separation second time; The other end at filtrator has an air exhauster interface, and its effect is to contain the suction force of powder waste gas for powder separation device provides suction.Cyclone separating chamber, separable, as to reclaim major part powder.
The advantage of this laser particle particle size distribution test instrument that the utility model provides is: owing to come the tested sample before testing is carried out dry method gas dispersion, conveying with the sampling diverting device with pressure gas inlet, powder jet pipe, changed the scarce limit of structure that prior art exists, overcome the deficiency that many powders are difficult to find suitable liquid medium, the cleaning of instrument after also can removing test from and finishing, make the range of application of laser particle size distribution tests instrument obtain enlarging, test speed is faster, operates easier.
Accompanying drawing 1 is the structural representation of this laser particle particle size distribution test instrument that provides of the utility model.Wherein, laser beam expanding device (1), directional light (2), test storehouse (3), condenser lens (4), photoelectric conversion device (5), powder jet pipe (6), sampling diverting device (7), pressure gas inlet (8), powder separation device (9).
Accompanying drawing 2 is sampling diverting device structural representations of this laser particle particle size distribution test instrument that provides of the utility model.Wherein, pressure gas inlet (8), variable nozzle A (10), dispersion chamber A (11), powder jet pipe (6), confession powder groove (12), dispersion chamber B (13), powder absorbing pipe (14), variable nozzle B (15).
Accompanying drawing 3 is powder separation device structural representations of this laser particle particle size distribution test instrument that provides of the utility model.Wherein, exhaust gas inlet (16), dividing plate (17), isolated by filtration chamber (18), filtrator (19), air exhauster interface (20), cyclonic separation escape pipe (21), cyclone separating chamber (22), useless powder escape hole (23), useless powder container (24).
Below in conjunction with accompanying drawing, introduce a kind of course of work of this laser particle particle size distribution test instrument that the utility model provides: connect instrument power source, after checking that each partially-working is normal, powder to be measured is put into the groove that supplies powder groove (12), will powder wherein be pumped to for powder groove (12) uniform motion and disperse chamber B (13) to carry out disperseing first time, be sucked up to again subsequently and disperse chamber A (11) to carry out evenly dispersion second time, after powder jet pipe (6) is sprayed into the flat air-flow enters and test storehouse (3) through powder absorbing pipe (14); After the directional light (2) that is produced by laser beam expanding device (1) is radiated at the diffraction light that produces on the tested powder granule in test storehouse (3), scattered light line focus lens (4), by photoelectric conversion device (5) with light signal convert to electric signal, through amplify, Computer Processing, can draw test result; The powder waste gas that contains after the test is inhaled into cyclone separating chamber (22) from the opposite side in test storehouse (3) through exhaust gas inlet (16) and carries out the gas powder and separate, and reclaims most powder by useless powder escape hole (23), is collected in the powder container (24) that gives up; The gas that contains a small amount of powder after cyclonic separation enters isolated by filtration chamber (18) by cyclonic separation escape pipe (21), is further separated by filtrator (19).
Claims (1)
- A kind of laser particle particle size distribution test instrument, form by test storehouse (3), condenser lens (4), photoelectric conversion device parts such as (5) that laser beam expanding device (1) reaches after being installed on successively, it is characterized in that: a side in test storehouse (3) is equipped with powder jet pipe (6), the other end of powder jet pipe (6) is equipped with the sampling diverting device (7) with pressure gas inlet (8), and powder separation device (9) is equipped with in the opposite side in test storehouse (3), the position relative with sampling diverting device (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03252937 CN2645076Y (en) | 2003-09-26 | 2003-09-26 | Laser particles size distribution tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03252937 CN2645076Y (en) | 2003-09-26 | 2003-09-26 | Laser particles size distribution tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2645076Y true CN2645076Y (en) | 2004-09-29 |
Family
ID=34294288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03252937 Expired - Fee Related CN2645076Y (en) | 2003-09-26 | 2003-09-26 | Laser particles size distribution tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2645076Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102004068A (en) * | 2010-11-05 | 2011-04-06 | 济南微纳颗粒仪器股份有限公司 | Wet-method granule circulating device |
| CN103063555A (en) * | 2012-12-31 | 2013-04-24 | 战仁军 | Smoke particle measuring system |
| CN105259083A (en) * | 2014-07-16 | 2016-01-20 | 上海征鸿传感器测控技术有限公司 | Dry laser particle size analyzer cyclone feeding apparatus |
| CN106885763A (en) * | 2017-02-21 | 2017-06-23 | 上海万澄环保科技有限公司 | A kind of online particle image particle size analyzing device |
-
2003
- 2003-09-26 CN CN 03252937 patent/CN2645076Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102004068A (en) * | 2010-11-05 | 2011-04-06 | 济南微纳颗粒仪器股份有限公司 | Wet-method granule circulating device |
| CN103063555A (en) * | 2012-12-31 | 2013-04-24 | 战仁军 | Smoke particle measuring system |
| CN105259083A (en) * | 2014-07-16 | 2016-01-20 | 上海征鸿传感器测控技术有限公司 | Dry laser particle size analyzer cyclone feeding apparatus |
| CN106885763A (en) * | 2017-02-21 | 2017-06-23 | 上海万澄环保科技有限公司 | A kind of online particle image particle size analyzing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040929 Termination date: 20110926 |