CN201166635Y - Tester for laser grain fineness distribution - Google Patents
Tester for laser grain fineness distribution Download PDFInfo
- Publication number
- CN201166635Y CN201166635Y CNU2007200809420U CN200720080942U CN201166635Y CN 201166635 Y CN201166635 Y CN 201166635Y CN U2007200809420 U CNU2007200809420 U CN U2007200809420U CN 200720080942 U CN200720080942 U CN 200720080942U CN 201166635 Y CN201166635 Y CN 201166635Y
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- laser
- delivery pipe
- tester
- photoelectric conversion
- conversion device
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Abstract
The utility model relates to a tester for the distribution of powder laser granularity, which is characterized by installing a conveyer pipe C (8), a temperature sensor (7), a conveyer pipe B (6), an ultrasonic scattering groove (5), a conveyer pipe A (4), a liquid pump (3), a conveyer pipe D (14) on the upper end of a testing vessel (9) of an existing tester for the distribution of powder laser granularity, wherein a laser with large power (10) is installed on the front upper portion of a focusing lens B (12), a focusing lens A (11), a nanometer pore plate (15), a nanometer signal photoelectric conversion device (16) are installed on the light path of the laser with large power (10), and a multichannel hardware auto-correlator (18) and a multichannel software auto-correlator (19) are installed between an amplifier (17) and a computer (20). The lower testing limit of the tester is lowered to one nanometer and the high testing limit thereof is extended to five-hundred micrometers, and the tester can carry out the real-time testing to the temperature of a specimen and can improve the accuracy of the testing.
Description
Technical field
The utility model is about powder granularity distribution tests instrument, especially about laser particle size distribution tests instrument.
Background technology
In the laser particle size distribution tests instrument technology of existing powder, just like the patent No. is that 90214729.3 " laser diffraction formula particle size distribution test instrument ", the patent No.s of putting down in writing are 200420033010.7 records " particle laser particle size distribution tests instrument " or the like, it tests best lower limit about 100 nanometers, though also there is equipment and instrument manufacturing firm test lower limit can reach 20 nanometers, but think from theoretical analysis, the particle diameter of test lower limit is very little, since short grained signal too a little less than, its signal to noise ratio (S/N ratio) is too little, has not been the best test specification of existing laser particle size distribution tests instrument.The best test specification of existing laser particle size distribution tests instrument 0.1 micron between the hundreds of micron, so its application in the nano-powder field is limited to.
Summary of the invention
Task of the present utility model provides a kind of laser particle size distribution tests instrument with liquid pump, delivery pipe A, ultrasonic dispersing groove, delivery pipe B, temperature sensor, delivery pipe C, high power laser, convergent lens A, delivery pipe D, orifice plate, nanowire signal photoelectric conversion device, hyperchannel hardware autocorrelator, hyperchannel software autocorrelator.
Task of the present utility model is to realize like this.Having now by laser instrument and the parallel beam expand device after being installed on successively, the test ware, convergent lens B, photoelectric conversion device, amplifier, computing machine, printer, the upper end of the test ware of the laser particle size distribution tests instrument of forming is successively installed delivery pipe C successively, temperature sensor, delivery pipe B, the ultrasonic dispersing groove, delivery pipe A, the liquid pump, delivery pipe D, high power laser is installed in front upper place at condenser lens B, condenser lens A is installed on the light path of high power laser successively, orifice plate, the nanowire signal photoelectric conversion device, the parallel hyperchannel hardware autocorrelator of installing between amplifier and computing machine, hyperchannel software autocorrelator.
This laser particle size distribution tests instrument that the utility model provides, when being used to test the size-grade distribution of nano-powder, the closing liquid pump, liquid in the test ware is remained static, connect high power laser, the laser beam of its generation is radiated at the tested particle that is in Brownian movement in the test ware from a side of testing the close condenser lens B of ware and produces scattered light, its scattered light signal is radiated on the nanowire signal photoelectric conversion device after by the nanometer orifice plate and converts electric signal to, after amplifier amplifies, by hyperchannel hardware autocorrelator, after hyperchannel software autocorrelator and the Computer Processing, can utilize the photon correlation spectroscopy method to measure the size-grade distribution of nano-powder; When being used to test the size-grade distribution of non-nano powder, connect liquid pump and ultrasonic dispersing groove, close high power laser, the laser beam of using laser instrument to produce, by parallel beam expand device with regard to direct irradiation on the powder granule of test in the ware, produce diffraction, light scattering is mapped to and converts electric signal on the photoelectric conversion device to, amplify back input Computer Processing through amplifier, can test out the size-grade distribution of non-nano powder.
The novel this laser particle size distribution tests instrument that provides of this reality, by laser instrument and be installed on successively after parallel beam expand device, the test ware, condenser lens B, photoelectric conversion device, amplifier, computing machine, printer and the delivery pipe C that is installed in test ware upper end, temperature sensor, delivery pipe B, the ultrasonic dispersing groove, delivery pipe A, the liquid pump, delivery pipe D, be installed in the condenser lens A on the light path of the high power laser of front upper place of condenser lens B and high power laser, the nanometer orifice plate, the nanowire signal photoelectric conversion device is installed in the hyperchannel hardware autocorrelator between amplifier and the computing machine, hyperchannel software autocorrelator is formed.
The effect of laser instrument is to produce laser beam, as semiconductor laser.
The effect of parallel beam expand device is that the laser beam that laser instrument produces is become directional light.
The effect of liquid pump provides and disperses the needed power of powder conveying.
The effect of delivery pipe A is to provide flow channel for the liquid that contains powder granule in flowing.
The effect of ultrasonic dispersing groove is with ultrasound wave powder sample to be measured to be scattered in the liquid.
The effect of delivery pipe B is to provide flow channel for the liquid that contains powder granule in flowing.
The effect of temperature sensor is the temperature of test samples, as one of nano-powder particle size distribution test calculating parameter.
The effect of delivery pipe C is to provide flow channel for the liquid that contains powder granule in flowing.
The effect of test ware is a splendid attire powder sample to be tested, is made by optical glass, is thin seam test ware, is about 1 millimeter, and its upper end links to each other with delivery pipe C, the lower end links to each other with delivery pipe D.
The effect of high power laser is the laser that produces about 150 milliwatts.
The effect of condenser lens A is that the laser beam that high power laser produces is focused on, and its focus is adjusted at the center of test ware.
The effect of condenser lens B is that the light beam by the test ware is focused on.
The effect of photoelectric conversion device is to convert electric signal to by condenser lens B and the light signal that is radiated on the photo-electric conversion element on photoelectric conversion device surface, a plurality of photo-electric conversion elements are equipped with on the surface of photoelectric conversion device, and there is a through hole that allows the direct light of beam center pass at the center after the focus place is focused into a bit.
The effect of delivery pipe D is to provide flow channel for the liquid that contains powder granule in flowing.
The effect of nanometer orifice plate is a diameter of regulating light beam, and the light beam that can allow needs passes and is radiated on the nano photoelectric chromacoder.
The effect of nanowire signal photoelectric conversion device is to shine the light signal that produces on the nano-powder in the test ware after high power laser is produced, also focuses on through condenser lens A to convert electric signal to.
The effect of amplifier is that the electric signal that photoelectric conversion device and nanowire signal photoelectric conversion device produce is carried out processing and amplifying.
The effect of hyperchannel hardware autocorrelator is when being used for the nano-powder particle size distribution test lag time to be lower than the auto-correlation computation of the minimum lag time of hyperchannel software autocorrelator with lower channel, adopts 10 channel hardware autocorrelators usually.
The effect of hyperchannel software autocorrelator is the data that collect to be finished to the auto-correlation computation of routing, given lag time by computer program handle.
The effect of computing machine is computing and data processing, in the hope of going out the size-grade distribution of powder.
The effect of printer is that the form of test result with chart, literal printed on the paper, so that result's papery transmission.
The advantage of this laser particle size distribution tests instrument that the utility model provides is; Can make the test specification lower limit of a laser particle size distribution tests instrument be low to moderate 1 nanometer, and the upper limit can reach 500 microns, has expanded the test specification of instrument, the temperature of sample in the time of can measuring test in real time can improve the accuracy that nano-powder is tested size-grade distribution.
Description of drawings
Accompanying drawing is a kind of structural representation of this laser particle size distribution tests instrument that provides of the utility model, wherein laser instrument (1), parallel beam expand device (2), liquid pump (3), delivery pipe A (4), ultrasonic dispersing groove (5), delivery pipe B (6), temperature sensor (7), delivery pipe C (8), test ware (9), high power laser (10), condenser lens A (11), condenser lens B (12), photoelectric conversion device (13), delivery pipe D (14), nanometer orifice plate (15), nanowire signal photoelectric conversion device (16), amplifier (17), hyperchannel hardware autocorrelator (18), hyperchannel software autocorrelator (19), computing machine (20), printer (21).
Embodiment
Parallel beam expand device (2) is installed behind the laser instrument (1) successively, test ware (9), condenser lens B (12), photoelectric conversion device (13), amplifier (17), computing machine (20), printer (21), delivery pipe C (8) is installed in upper end at test ware (9), temperature sensor (7), delivery pipe B (6), ultrasonic dispersing groove (5), delivery pipe A (4), liquid pump (3), delivery pipe D (14), the end of delivery pipe D (14) links to each other with the outlet of liquid pump (3), the other end links to each other with the lower end of test ware (9), high power laser (10) is installed in front upper place at condenser lens B (12), installation condenser lens A (11) on the light path of high power laser (10), nanometer orifice plate (15), nanowire signal photoelectric conversion device (16), the installation hyperchannel hardware autocorrelator (18) between amplifier (17) and computing machine (20), hyperchannel software autocorrelator (19).
A kind of course of work of this laser particle size distribution tests instrument that the utility model provides is as follows:
At first connect instrument power source, by computing machine optimum range is transferred in the working point of amplifier, read the size of coherent signal, then powder sample to be measured is sent into test ware (9), when powder sample to be measured does not belong to nano-powder, connect laser instrument (1), the light beam that laser instrument (1) produces becomes directional light through parallel beam expand device (2), be radiated on the powder in the test ware (9) and produce diffraction, scattering, its diffraction light, be radiated at after scattered light line focus lens B (12) focus on the photo-electric conversion element of photoelectric conversion device (13) and convert light signal to electric signal, another part light beam line focus lens B (12) pass photoelectric conversion device (13) after the focus place focuses on center pit is absorbed, and the electric signal of photoelectric conversion device (13) can pass through the particle size distribution test result of printer (21) output non-nano powder after input computing machine (20) processing after amplifier (17) amplifies; When powder sample to be measured belongs to nano-powder, under the condition of closing laser instrument (1), connect high power laser (10), after the laser beam that high power laser (10) produces focuses on through condenser lens A (11), be radiated in the focus place on the powder at test ware (9) center and produce scattered light, its scattered light shines through nanometer orifice plate (15) on the photo-electric conversion element of nanowire signal photoelectric conversion device (16) and converts the nanometer light beam electric signal to, after amplifier (17) amplifies, again through hyperchannel hardware autocorrelator (18), after handling with computing machine (20), can pass through by hyperchannel software autocorrelator (19) the particle size distribution test result of printer (21) output nano-powder.
Claims (2)
1, a kind of laser particle size distribution tests instrument, by laser instrument (1) and be installed on successively after parallel beam expand device (2), test ware (9), condenser lens B (12), photoelectric conversion device (13), amplifier (17), computing machine (20), printer (21) is formed, it is characterized in that: delivery pipe C (8) is installed in the upper end at test ware (9), temperature sensor (7), delivery pipe B (6), ultrasonic dispersing groove (5), delivery pipe A (4), liquid pump (3), delivery pipe D (14), the end of delivery pipe D (14) links to each other with the outlet of liquid pump (3), the other end links to each other with the lower end of test ware (9), high power laser (10) is installed in front upper place at condenser lens B (12), condenser lens A (11) is installed on the light path of high power laser (10), nanometer orifice plate (15), nanowire signal photoelectric conversion device (16), the installation hyperchannel hardware autocorrelator (18) between amplifier (17) and computing machine (20), hyperchannel software autocorrelator (19).
2, laser particle size distribution tests instrument as claimed in claim 1 is characterized in that: test ware (9) is thin the seam, is about 1 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200809420U CN201166635Y (en) | 2007-09-05 | 2007-09-05 | Tester for laser grain fineness distribution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200809420U CN201166635Y (en) | 2007-09-05 | 2007-09-05 | Tester for laser grain fineness distribution |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201166635Y true CN201166635Y (en) | 2008-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200809420U Expired - Fee Related CN201166635Y (en) | 2007-09-05 | 2007-09-05 | Tester for laser grain fineness distribution |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201166635Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105092434A (en) * | 2015-07-13 | 2015-11-25 | 国家海洋局第一海洋研究所 | Automatic processing method of seabed sediment particle size analysis data |
-
2007
- 2007-09-05 CN CNU2007200809420U patent/CN201166635Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105092434A (en) * | 2015-07-13 | 2015-11-25 | 国家海洋局第一海洋研究所 | Automatic processing method of seabed sediment particle size analysis data |
| CN105092434B (en) * | 2015-07-13 | 2019-08-13 | 自然资源部第一海洋研究所 | The automatic processing method of bottom sediment grain size analysis data |
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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: 20081217 Termination date: 20140905 |
|
| EXPY | Termination of patent right or utility model |