CN202433304U - Rotary sample detecting device for acousto-optic tunable filter (AOTF) portable near-infrared spectrometer - Google Patents
Rotary sample detecting device for acousto-optic tunable filter (AOTF) portable near-infrared spectrometer Download PDFInfo
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- CN202433304U CN202433304U CN 201220045017 CN201220045017U CN202433304U CN 202433304 U CN202433304 U CN 202433304U CN 201220045017 CN201220045017 CN 201220045017 CN 201220045017 U CN201220045017 U CN 201220045017U CN 202433304 U CN202433304 U CN 202433304U
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Abstract
The utility model relates to a rotary sample detecting device for an acousto-optic tunable filter (AOTF) portable near-infrared spectrometer. The rotary sample detecting device comprises a rotary sample detecting table, a sample detecting cup, a compaction block and a support, wherein the rotary sample detecting table is arranged on the support; the rotary sample detecting table comprises a shell; a circular hole in which the sample detecting cup is placed is formed in the shell; a rotary gear and a motor gear are arranged in the shell; the rotary gear is in transmission connection with the motor gear; when needed to be detected, a sample to be detected is put into the sample detecting cup and is compacted by using the compaction block; the sample detecting cup is put into the circular hole in the shell of the rotary sample detecting table, and the sample detecting cup is erected in a groove with a through hole; and an AOTF portable near-infrared spectrometer lens is aligned with the non-circular center position of the bottom of a quartz cup along a detection hole, the sample detecting cup is driven by the rotary gear to rotate, and then the AOTF portable near-infrared spectrometer lens detects the sample to be detected in an annular area with a fixed radius and detects multiple groups of data.
Description
Technical field
The utility model relates to a kind of AOTF portable near infrared spectrometer rotation test sample device, belongs to the analytical chemistry instrument technical field.
Background technology
Existing infrared spectrum in modern age (NIR) analytical technology is the high-and-new science and technology of analytical chemistry field fast development in recent years, and near infrared light is meant that the light wave scope is the electromagnetic wave of 780-2526mm, and it mainly is to contain hydrogen group (OH that general organism absorbs at this regional near infrared spectrum; CH; NH, SH, frequency multiplication PH) and sum of fundamental frequencies absorb; Nearly all organic primary structure can find signal with forming in their near infrared spectrum, and collection of illustrative plates is stable.And it is easy and simple to handle, analyzes rapidly, reflects the measurand state in real time; Do not destroy sample, do not need that sample is done any pre-service and directly measure, be fit to scene and online detection; Do not consume chemical reagent, can not pollute environment, the near infrared light energy is low, can not damage sample and experimenter itself, belongs to green analytical technology.Near-infrared spectrometers is through 50 years of development, be fit to on-the-spot detect use be mostly acousto-optic turnable filter (Acousto-Optic Tunable Filter, abbreviation AOTF).The AOTF near infrared technology is mainly used in industrial circles such as petrochemical complex, chemistry/polyester, tobacco, medicine, agricultural/seed, food, papermaking, weaving abroad.Be fit to the portable AOTF technology of the Luminar 5030 types near infrared spectrometer that the on-the-spot U.S. BRIMROSE company of detecting produces,, realized instant analysis sample applicable to indoor or on-the-spot directly to the harmless spectrum of gathering of sample.But when utilizing above-mentioned AOTF technology near infrared spectrometer that Chinese medicine is detected, particle and powdered samples (pill etc. need be processed the sample of above-mentioned state) but are difficult to collect uniform spectra, thereby cause test result inaccurate.
Summary of the invention
To the deficiency of prior art, the utility model provides a kind of AOTF portable near infrared spectrometer rotation test sample device.The portable AOTF technology of Luminar 5030 types that this device combines U.S. BRIMROSE company to produce near infrared spectrometer is applied to the sampling field of solid particle and powdered sample together, has guaranteed that the portable AOTF technology of the Luminar 5030 types near infrared spectrometer of U.S. BRIMROSE company production detects the accuracy of effect to Chinese medicine and tobacco.
The technical scheme of the utility model is following:
A kind of AOTF portable near infrared spectrometer rotation test sample device comprises rotation test sample platform, test sample cup, compacting block and support, and described rotation test sample platform is rack-mount;
Said rotation test sample platform comprises shell, and said shell is provided with the circular hole that supplies to hold the test sample cup; Be provided with swing pinion and motor gear in the enclosure, described swing pinion and motor gear are in transmission connection; Said swing pinion is provided with the groove with through hole, is provided with annular boss in the bottom of swing pinion along through hole; Upper surface at outer casing bottom is provided with the annular groove that adapts with annular boss, and said annular boss is arranged in the annular groove; Be provided with the fixedly detection hole of AOTF portable near infrared spectrometer camera lens in the outer casing bottom perforation, said detection hole is arranged in the radius of through hole;
The groove diameter with through hole that is provided with on the diameter of said circular hole and the swing pinion adapts with detecting a cup external diameter respectively, and the through hole that is provided with on circular hole and the swing pinion, all coaxial setting of groove;
Said test sample cup comprises at the bottom of wall of cup and the quartz curette, embedded being arranged in the wall of cup at the bottom of the said quartz curette; Said compacting block is cylindrical, and its diameter and test sample cup internal diameter adapt.When needs are treated the sample article and are detected; Testing sample is contained up in the test sample cup; And use compacting block with the testing sample compacting, and then the test sample cup is put into the circular hole on the rotation test sample platform shell, the test sample cup is put by load and is arranged in the groove with through hole immediately; AOTF portable near infrared spectrometer camera lens is along the non-circle centre position (being in the radius of through hole) that detects at the bottom of quartz curette is aimed in the hole; The test cup rotates under the drive of swing pinion, and AOTF portable near infrared spectrometer camera lens detects the testing sample in the annular region of radii fixus immediately, detects multi-group data.
Be that thickness is the infrared optical silex JGS3 of 1-2.5mm at the bottom of the said quartz curette.Wherein the implication of JGS3 is: according to building material industry portion of People's Republic of China (PRC) ministerial standard; Standard No. JC185-81, standard name JGS3 optical quartz glass has the higher infrared property that passes through; Transmitance is up to more than 85%, the optical material of its application band scope 260-3500nm.
The diameter of said through hole is less than or equal to the diameter at the bottom of the quartz curette.
Said wall of cup is an aluminium alloy.
Distance between bottom surface at the bottom of the said quartz curette and the wall of cup outer is 0.5-1mm.
Described compacting block is that weight is the counterweight of 400g.
Described support comprises body frame.
Described support also comprises the base plate that is connected body frame bottom, and said base plate is provided with adjusting knob, and adjusting knob links to each other with pilot hole on the base plate through screw thread.The effect of this design is; The AOTF portable near infrared spectrometer is fixedly mounted between rotation test sample platform and the adjusting knob; The length of stretching out fixed orifice through the adjusting knob AOTF portable near infrared spectrometer that is fixedly clamped accurately detects to guarantee that the instrument camera lens is fixed in the said detection hole.
Said body frame is transparent organic glass or metal support.
Said detection hole is round table-like.Adapt with the profile of AOTF portable near infrared spectrometer camera lens so that said camera lens can the perpendicular alignmnet quartz curette at the bottom of, guarantee to detect the accuracy of data.
Said swing pinion is in transmission connection through follower gear and motor gear.
The course of work of the utility model, method step is following:
The testing sample that 1) will detect is packed into and is detected in the cup, and with compacting block with sample compacting to be checked;
2) will detect the circular hole that cup is put into rotation test sample platform shell, the said cup that detects passes in the groove that circular hole falls into the swing pinion in the shell;
3) with AOTF portable near infrared spectrometer camera lens at the bottom of the quartz curette of the detection hole aim detecting cup of outer casing bottom;
4) motor gear driven rotary gear rotates, and then drives the rotation of detection cup, and it is the sample data of the circular annular region in the center of circle that said AOTF portable near infrared spectrometer collects with center at the bottom of the quartz curette.
The distance range of bottom surface is 0.3-0.5mm at the bottom of step 3) said AOTF portable near infrared spectrometer camera lens and the quartz curette;
Step 3) utilizes the adjusting knob on the base plate AOTF portable near infrared spectrometer to be fixed on the below of rotation test sample platform.
The said rotating speed that detects cup of step 4) is 15 circle/min, and said AOTF portable near infrared spectrometer detects the sample that detects in the cup with the sweep frequency of 37.5 times/s, and be 4s or 8s described detection time; The internal diameter of said circular annular region is 36mm, and the external diameter of said circular annular region is 54mm.Through the rotation of test sample cup, make the AOTF portable near infrared spectrometer collect more sample message, gather spectrum with respect to static state, it is more, more comprehensive to do the quantity of information that obtains like this, more helps the analyzing and testing of later stage to spectral information.
The advantage of the utility model is:
1. the utility model makes spectrometer can obtain more various article information through the rotation of test sample cup, has increased scan area, and the near infrared light spectrum information that obtains is more comprehensive, effective information is abundanter, has reduced the cycle of gathering in earlier stage and the difficulty of later stage spectral analysis;
2. the utility model is through precise design, makes the AOTF portable near infrared spectrometer from can only detecting by on-site manual originally, detects but become also the laboratory, helps to collect the stable spectra of testing sample;
3. the test sample cup all adopts the 400g counterweight of identical weight to carry out compacting at every turn; Help keeping the consistance of the phsyical density of each testing sample; Make spectral absorbance can reflect the difference of the inner chemical constitution of sample to greatest extent, rather than the difference of reflection physical state.
Description of drawings
Fig. 1 is the structural representation of AOTF portable near infrared spectrometer rotation test sample device, wherein omits gear transmission structure;
Fig. 2 is the side sectional view of AOTF portable near infrared spectrometer rotation test sample device;
Fig. 3 is an AOTF portable near infrared spectrometer rotation test sample device annular wheel drive mechanism synoptic diagram;
Fig. 4 is the said structural representation that detects cup of the utility model;
Fig. 5 is when utilizing the utility model to detect, and detects the upward view of cup;
In Fig. 1-5,1, the rotation monitor station; The 1-1 shell; 1-2, confession hold the circular hole of test sample cup; 1-3, swing pinion; 1-4, motor gear; 1-5, follower gear; The bottom of 1-6, shell; 1-7, annular groove; The groove that has through hole on 1-8, the swing pinion; The annular boss that the bottom of 1-9, swing pinion is provided with along through hole; 1-10, detection hole; 1-11, through hole;
2, detect cup; 2-1, wall of cup; At the bottom of the 2-2 quartz curette; Bottom surface at the bottom of 2-3, the quartz curette; 2-4, wall of cup outer;
3, compacting block;
4, support; 4-1, body frame; 4-2, base plate; 4-3, adjusting knob; 4-4, pilot hole;
5, AOTF portable near infrared spectrometer; 5-1, AOTF portable near infrared spectrometer camera lens;
6, testing sample; 6-1, annular surveyed area.
Embodiment
Below in conjunction with embodiment and Figure of description the utility model is done detailed explanation, but be not limited thereto.
Embodiment,
A kind of AOTF portable near infrared spectrometer rotation test sample device comprises rotation test sample platform 1, test sample cup 2, compacting block 3 and support 4, and described rotation test sample platform 1 is installed on the support 4; Said rotation test sample platform 1 comprises shell 1-1, and said shell 1-1 is provided with the circular hole 1-2 that supplies to hold the test sample cup; In shell 1-1, be provided with swing pinion 1-3 and motor gear 1-4, said swing pinion 1-3 is in transmission connection through follower gear 1-5 and motor gear 1-4; Said swing pinion 1-3 is provided with the groove 1-8 with through hole, is provided with annular boss 1-9 in the bottom of swing pinion 1-3 along through hole 1-11; Upper surface at outer casing bottom 1-6 is provided with the annular groove 1-7 that adapts with annular boss 1-9, and said annular boss 1-9 is arranged in the annular groove 1-7; Be provided with the fixedly detection hole 1-10 of AOTF portable near infrared spectrometer camera lens in the perforation of shell 1-1 bottom, said detection hole 1-10 is round table-like.Said detection hole 1-10 is arranged in the radius of through hole 1-11; The groove 1-8 diameter with through hole that is provided with on the diameter of said circular hole 1-2 and the swing pinion adapts with detecting cup 2 external diameters respectively, and circular hole 1-2 and the upward all coaxial setting of through hole 1-11, groove 1-8 of setting of swing pinion 1-3; Said test sample cup 2 comprises 2-2 at the bottom of wall of cup 2-1 and the quartz curette, and 2-2 is embedded at the bottom of the said quartz curette is arranged in the wall of cup 2-1; Said compacting block 3 is cylindrical, and its diameter and test sample cup 2 internal diameters adapt.2-2 is that thickness is the infrared optical silex JGS3 of 1.5mm at the bottom of the said quartz curette.The diameter of said through hole 1-11 equals the diameter of 2-2 at the bottom of the quartz curette.Said wall of cup 2-1 is an aluminium alloy.Distance between bottom surface 2-3 at the bottom of the said quartz curette and the wall of cup outer 2-4 is 0.5mm.Described compacting block 3 is the counterweight of 400g for weight.
Described support 4 comprises body frame 4-1.Described support 4 also comprises the base plate 4-2 that is connected body frame 4-1 bottom, and said base plate 4-2 is provided with adjusting knob 4-3, and adjusting knob 4-3 links to each other with pilot hole 4-4 on the base plate 4-2 through screw thread.Said body frame 4-1 is a transparent organic glass.
Claims (10)
1. an AOTF portable near infrared spectrometer rotation test sample device comprises rotation test sample platform, test sample cup, compacting block and support, and described rotation test sample platform is rack-mount; Said rotation test sample platform comprises shell, and said shell is provided with the circular hole that supplies to hold the test sample cup; Be provided with swing pinion and motor gear in the enclosure, described swing pinion and motor gear are in transmission connection; Said swing pinion is provided with the groove with through hole, is provided with annular boss in the bottom of swing pinion along through hole; Upper surface at outer casing bottom is provided with the annular groove that adapts with annular boss, and said annular boss is arranged in the annular groove; Be provided with the fixedly detection hole of AOTF portable near infrared spectrometer camera lens in the outer casing bottom perforation, said detection hole is arranged in the radius of through hole; The groove diameter with through hole that is provided with on the diameter of said circular hole and the swing pinion adapts with detecting a cup external diameter respectively, and the through hole that is provided with on circular hole and the swing pinion, all coaxial setting of groove; Said test sample cup comprises at the bottom of wall of cup and the quartz curette, embedded being arranged in the wall of cup at the bottom of the said quartz curette; Said compacting block is cylindrical, and its diameter and test sample cup internal diameter adapt; The diameter of said through hole is less than or equal to the diameter at the bottom of the quartz curette.
2. device according to claim 1 is characterized in that, is that thickness is the infrared optical silex JGS3 of 1-2.5mm at the bottom of the said quartz curette.
3. device according to claim 1 is characterized in that, the distance between bottom surface at the bottom of the said quartz curette and the wall of cup outer is 0.5-1mm.
4. device according to claim 1 is characterized in that, said wall of cup is an aluminium alloy.
5. device according to claim 1 is characterized in that, described compacting block is that weight is the counterweight of 400g.
6. device according to claim 1 is characterized in that, said detection hole is round table-like.
7. device according to claim 1 is characterized in that said swing pinion is in transmission connection through follower gear and motor gear.
8. device according to claim 1 is characterized in that described support comprises body frame.
9. device according to claim 8 is characterized in that, described support also comprises the base plate that is connected body frame bottom, and said base plate is provided with adjusting knob, and adjusting knob links to each other with pilot hole on the base plate through screw thread.
10. according to Claim 8 or 9 described devices, it is characterized in that said body frame is transparent organic glass or metal support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220045017 CN202433304U (en) | 2012-02-13 | 2012-02-13 | Rotary sample detecting device for acousto-optic tunable filter (AOTF) portable near-infrared spectrometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220045017 CN202433304U (en) | 2012-02-13 | 2012-02-13 | Rotary sample detecting device for acousto-optic tunable filter (AOTF) portable near-infrared spectrometer |
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| CN202433304U true CN202433304U (en) | 2012-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220045017 Expired - Fee Related CN202433304U (en) | 2012-02-13 | 2012-02-13 | Rotary sample detecting device for acousto-optic tunable filter (AOTF) portable near-infrared spectrometer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103048267A (en) * | 2012-02-10 | 2013-04-17 | 济南金宏利实业有限公司 | Rotary sampling device of portable near-infrared spectrometer of AOTF (acousto-optic tunable filter) and application |
| CN103234919A (en) * | 2013-04-16 | 2013-08-07 | 浙江工业大学 | Automatic mass collection method for soil spectrum, and special collection apparatus |
| CN103454236A (en) * | 2013-09-30 | 2013-12-18 | 重庆大学 | Method for accurately detecting pesticide residues through spectrum |
-
2012
- 2012-02-13 CN CN 201220045017 patent/CN202433304U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103048267A (en) * | 2012-02-10 | 2013-04-17 | 济南金宏利实业有限公司 | Rotary sampling device of portable near-infrared spectrometer of AOTF (acousto-optic tunable filter) and application |
| CN103234919A (en) * | 2013-04-16 | 2013-08-07 | 浙江工业大学 | Automatic mass collection method for soil spectrum, and special collection apparatus |
| CN103454236A (en) * | 2013-09-30 | 2013-12-18 | 重庆大学 | Method for accurately detecting pesticide residues through spectrum |
| CN103454236B (en) * | 2013-09-30 | 2015-09-23 | 重庆大学 | A kind of accurately residual spectral method of detection of agriculture |
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| Date | Code | Title | Description |
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| 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: 20120912 Termination date: 20150213 |
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| EXPY | Termination of patent right or utility model |