CN203117100U - Turbidimeter for detecting down - Google Patents
Turbidimeter for detecting down Download PDFInfo
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- CN203117100U CN203117100U CN 201220748290 CN201220748290U CN203117100U CN 203117100 U CN203117100 U CN 203117100U CN 201220748290 CN201220748290 CN 201220748290 CN 201220748290 U CN201220748290 U CN 201220748290U CN 203117100 U CN203117100 U CN 203117100U
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- light
- turbidimeter
- eider down
- detects
- monochromatic light
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Abstract
The utility model discloses a turbidimeter for detecting down. The turbidimeter comprises a light source device, a monochromatic light generating device, a focusing lens, a sample cell and a detection device, wherein the monochromatic light generating device is arranged along a light path output by the light source device; the focusing lens is arranged along a monochromatic light path output by the monochromatic light generating device; the sample cell is arranged on a focal point of the focusing lens along an output light path; and the detection device is arranged in back of the sample cell along the monochromatic light path. The turbidimeter disclosed by the utility model has the characteristics of low price, convenience in operation, rapidness in detection, high accuracy, stable results, good reproducibility and the like, and can effectively solve the defects of unstable detection results and great difference of an existing visual method.
Description
Technical field
The utility model relates to Down and Feather detection technique field, and especially a kind of eider down detects uses turbidimeter.
Background technology
The turbidity of eider down (also being called as " transparency ") is the middle the highest project of frequency that detects of five big safety and sanitation indexs (all the other are oxygen consumption index, pH, residual fat and microorganism state) of eider down, also is wherein unique sense organ project.
Eider down standard turbidity/the transparency method of testing is " visual method " both at home and abroad at present.Be about to the filter liquor of eider down sample through concussion, after filtering and pour turbidity/transparency pipe into, see that with the testing staff filter liquor maximum height value of the target cross at the bottom of the pigging is represented turbidity/transparency.As organoleptic detection, be subjected to detection person's factor affecting such as eyesight, experience and ambient lighting, result's accuracy is low and unstable.
Turbidity/the transparency of eider down refers to the turbidity/transparency of the filter liquor that eider down is made by links such as concussion, filtrations.According to Lambert-Beer's law, when a branch of light can be subjected to the obstruction of material in the water during by aqueous solution, they produce scattering, absorption to light, make the incident light decay.Can see through the turbidity that the optical attenuation degree is determined water sample by measuring.Simple spectrophotometer has caused owing to the filter liquor transparency is too high that absorbance is on the low side, the monochromatic light of specific wavelength cause insensitive to some sized particles (colourity), cuvette is too little, owing to particle motion in the solution causes unstable result.Simple turbidimeter has adopted composite light source, but does not consider to absorb the light factor.Novel eider down detects special-purpose turbidimeter and has integrated spectrophotometer and turbidimetric advantage, has solved the low and problem of unstable of accuracy of testing result.
The utility model content
The utility model has overcome that testing result is subjected to subjective evaluation to be easy to generate than large deviation, to be subjected to extraneous light to influence defectives such as bigger, unstable result and poor reproducibility in the prior art, has proposed a kind of eider down and has detected and use turbidimeter.
The utility model proposes a kind of eider down detection and use turbidimeter, comprising:
Light supply apparatus;
The monochromatic light generating apparatus, it is along the light path setting of described light supply apparatus output;
Focus lamp, its monochromatic light light path along described monochromatic light generating apparatus output arranges;
Sample cell, it is arranged on the focus place of described focus lamp along described output light light path;
Pick-up unit, it is arranged on the rear of described sample cell along described monochromatic light light path.
Wherein, described light supply apparatus comprises light source and first catoptron; The light beam of described light source is injected in the described monochromatic light generating apparatus through described first catoptron.
Wherein, described light source is tungsten lamp.
Wherein, described monochromatic light generating apparatus comprises:
Input slit, it is arranged on the light path of described light supply apparatus output;
Second catoptron, it is arranged on the transmitted light path of described input slit;
Collimating mirror, it is along the reflection direction setting of described second catoptron;
Grating, itself and described collimating mirror are oppositely arranged;
Optical filter; It is along the direction of collimation setting of described collimating mirror;
Output slit; It is arranged on the rear of described optical filter along described direction of collimation.
Wherein, described output slit is arranged on the focus place of described focus lamp.
Wherein, the length of described sample cell is 10 centimetres, and width is 1 centimetre, highly is 4.5 centimetres.
Wherein, further comprise case; Described light supply apparatus, monochromatic light generating apparatus, focus lamp, sample cell and pick-up unit all are arranged on described case inside.
Wherein, further comprise:
Regulating device, it is connected with described monochromatic light generating apparatus.
Wherein, described regulating device comprises:
Adjuster bar, the one end is connected with the inner drive unit that divides;
Regulate index dial, it is arranged on the body of rod of described adjuster bar;
The inner drive unit that divides, it is connected with described grating.
Design of the present utility model is based on Lambert-Beer's law, by measuring the ratio of transmitted intensity and incident intensity, combine the incident light scattering and absorption and the situation of blocking in sample liquids that detect usefulness, overcome and measured the defective that absorbs the light situation in the turbidimeter method.The utility model has been followed the test philosophy of existing international method, thereby assay is more tallied with the actual situation.
Adopt tungsten lamp as light source in the utility model, the complex light that tungsten lamp generates is in conjunction with the monochromatic light generating apparatus, make the wavelength control of the incident light that detects usefulness in the human eye visible-range of 340-800nm, ultraviolet ray and the interference of infrared ray for the detection data have been avoided, overcome the monochromatic light of specific wavelength in the spectrophotometer method to the problem of the not clear sense of tested particle (colourity) of some size, and more met the detection method of visual method in original national standard.
The utility model has increased sample cell, by increasing the light path that the wherein volume increase of cuvette detects the incident light of usefulness, the absorbance of eider down sample is improved, thereby make the detected value control of absorbance in the ideal linearity scope of 0.1-1A, guaranteed that measured value is in reliable twenty percent scope of the present utility model, reduced error at measurment, overcome and caused because cuvette is too for a short time that the particle motion causes the testing result instability in the solution, or the low very low problem that is difficult to measurement result of light that absorbs that causes of solution concentration.
The utlity model has cheap, easy to operate, detect fast, accuracy is high, the result is stable and characteristics such as favorable reproducibility.
Adopt the irradiation of nephelometer tungsten lamp complex light to measure in the utility model, taken into account the characteristics that particle size (colourity) differs in the eider down filter liquor.Simultaneously, the utility model strengthens cuvette size (being increased to 10 times of original light paths), has increased absorbance, has reduced error at measurment.
The utility model adopts novel eider down to detect the absorbance that special-purpose turbidimeter is measured the eider down filter liquor, with compare with existing ocular estimate result after, draw the regression equation of transparency and absorbance.Characteristics cheap, easy to operate, that accuracy is high, the result is stable that this instrument has are applicable to current all kinds of eider down turbidity sample detection, have very strong practicality and marketing prospect.
The utility model eider down detects special-purpose turbidimeter has moved inspection place, Nantong inspection and quarantine bureau harmful organism quarantine laboratory by Shanghai Institute of Measurement and Testing Technology's detection and national down products quality supervision and test centers (Xiaoshan), Anhui inspection and quarantine bureau textile technology branch center, Shanghai inspection and quarantine bureau animals and plants and Food Inspection quarantine technique center, textile laboratory of industrial products inspection center of Jiangsu inspection and quarantine bureau, Sichuan inspection and quarantine bureau performance verification.
Description of drawings
Fig. 1 represents that eider down detects the front view with turbidimeter.
Fig. 2 represents that eider down detects the vertical view with turbidimeter.
Fig. 3 represents that eider down detects the schematic internal view with turbidimeter.
Fig. 4 represents that eider down detects the synoptic diagram with monochromatic light generating apparatus in the turbidimeter.
Embodiment
In conjunction with following specific embodiments and the drawings, the utility model is described in further detail.Implement process of the present utility model, condition, experimental technique etc., except the following content of mentioning specially, be universal knowledege and the common practise of this area, the utility model is not particularly limited content.
As Fig. 1 to Fig. 4,1-light source, 2-first catoptron, 31-input slit, 32-output slit, 4-second catoptron, the 5-collimating mirror, 6-grating, 7-optical filter, 8-focus lamp, 9-sample cell, the 10-pick-up unit, the 11-case, the 12-adjuster bar, 13-regulates index dial, 14-aperture.
What Fig. 3 showed is that eider down detects the schematic internal view with turbidimeter.Eider down of the present utility model detects with turbidimeter and comprises light supply apparatus, monochromatic light generating apparatus, focus lamp 8, sample cell 9 and pick-up unit 10.Wherein, further comprise case 11 and regulating device.Light supply apparatus, monochromatic light generating apparatus, focus lamp 8, sample cell 9, pick-up unit 10 all are arranged in the case 11 with regulating device.
Light supply apparatus is used for generating complex light, comprises light source 1 and first catoptron 2.The utility model adopts tungsten lamp as light source 1, and the spectral range that tungsten lamp covers is wider, is about 300-1100nm.The utility model also can adopt other composite light sources that can cover this spectrum as light source 1.First catoptron 2 changes the light path of the complex light of light source 1, and complex light is injected in the monochromatic light generating apparatus.
The monochromatic light generating apparatus is arranged on case 11 inside along the light path of light supply apparatus output.What Fig. 4 showed is the synoptic diagram of monochromatic light generating apparatus.Comprise input slit 31, second catoptron 4, collimating mirror 5, grating 6, optical filter 7 and output slit 32 in the monochromatic light generating apparatus.Input slit 31 is arranged on the reflected light path of second catoptron 2.Second catoptron 4 is arranged on the transmitted light path of input slit 31, and complex light incides second catoptron 4 through behind the input slit 31.Second catoptron reflexes to this complex light along on the collimating mirror 5 of its reflection direction setting.Collimating mirror 5 is oppositely arranged with grating 6, and collimating mirror 5 reflexes to complex light on the grating 6.Grating 6 has the light splitting function, and the light that the complex light medium wavelength is different separates, in different direction reflected back collimating mirrors 5.Collimating mirror 5 receives the different light beam of all kinds of wavelength, and this light beam is all penetrated to optical filter 7 according to the direction of collimation of collimating mirror 5 is parallel.The light beam of mating plate 7 all transfers the monochromatic light with a kind of color to after filtration.The monochromatic light that optical filter 7 generates penetrates by output slit 32.
Sample cell 9 is arranged on another focus place of focus lamp 8.By increasing the volume of sample cell 9, improve the volume that is contained in cuvette wherein.The volume of cuvette is increased to 1 (L) * 10 (W) * 4 (H) cm from 1 original (L) * 1 (W) * 4 (H) cm.Monochromatic light is received by pick-up unit 10 by the transmitted light behind the sample cell 9.
Pick-up unit 10 is arranged on the rear of sample cell 9 along the monochromatic light light path.Pick-up unit 10 adopts silicon photocell as detecting element, cooperates high-precision V/F converter, has improved data resolution and precision.
Eider down detects outside such as the Fig. 1 and shown in Figure 2 with turbidimeter, and regulating device links to each other with the monochromatic light generating apparatus, is used for regulating the parts of monochromatic light generating apparatus.Regulating device comprises adjuster bar 12 and regulates index dial 13.One end of adjuster bar 12 is connected with the inner drive unit that divides, the gear on the adjuster bar 12 and the inner sector gear sheet engagement that divides drive unit, and the sector gear sheet is connected with grating 6.Drive the sector gear sheet by adjuster bar 12, rotate to an angle thereby drive grating 6, realize regulating monochromatic output wavelength.
Adopt the utility model to carry out eider down when detecting, pack in the sample cell 9 cuvette that eider down detects sample is housed, open light source 1.The complex light of light source 1 reflexes in the input slit 31 by first catoptron 2.The part complex light is transmitted through on second catoptron 4 by input slit 31, reflexes to collimating mirror 5 by second catoptron 4.Collimating mirror 5 reflexes to grating 6 with complex light.Grating 6 carries out beam splitting with the light of different wave length in the complex light, in the light beams of different wavelengths difference reflected back collimating mirror 5.Collimating mirror 5 penetrates light beam abreast according to direction of collimation, is incident on the optical filter 7.Form monochromatic light by optical filter 7 backs, monochromatic light is transmitted to from output slit 32 on the focus lamp 8, by focus lamp 8 monochromatic light is focused in the eider down specimen of sample cell 9.Part transmitted light is after tested received by pick-up unit 10, thereby measures the turbidity of eider down.In use, can pass through regulating device, change the angle of grating 6 in the monochromatic light generating apparatus, thereby regulate monochromatic output wavelength.
Protection content of the present utility model is not limited to above embodiment.Under the spirit and scope that do not deviate from the utility model design, variation and advantage that those skilled in the art can expect all are included in the utility model, and are protection domain with the appending claims.
Claims (9)
1. an eider down detects and uses turbidimeter, it is characterized in that, comprising:
Light supply apparatus;
The monochromatic light generating apparatus, it is along the light path setting of described light supply apparatus output;
Focus lamp (8), its monochromatic light light path along described monochromatic light generating apparatus output arranges;
Sample cell (9), it is arranged on the focus place of described focus lamp (8) along described output light light path;
Pick-up unit (10), it is arranged on the rear of described sample cell (9) along described monochromatic light light path.
2. eider down as claimed in claim 1 detects and uses turbidimeter, it is characterized in that, described light supply apparatus comprises light source (1) and first catoptron (2); The light beam of described light source (1) is injected in the described monochromatic light generating apparatus through described first catoptron (2).
3. eider down as claimed in claim 2 detects and uses turbidimeter, it is characterized in that described light source (1) is tungsten lamp.
4. eider down as claimed in claim 1 detects and uses turbidimeter, it is characterized in that described monochromatic light generating apparatus comprises:
Input slit (31), it is arranged on the light path of described light supply apparatus output;
Second catoptron (4), it is arranged on the transmitted light path of described input slit (31);
Collimating mirror (5), it is along the reflection direction setting of described second catoptron (4);
Grating (6), itself and described collimating mirror (5) are oppositely arranged;
Optical filter (7); It is along the direction of collimation setting of described collimating mirror;
Output slit (32); It is arranged on the rear of described optical filter (7) along described direction of collimation.
5. eider down as claimed in claim 4 detects and uses turbidimeter, it is characterized in that described output slit (32) is arranged on the focus place of described focus lamp (8).
6. eider down as claimed in claim 1 detects and uses turbidimeter, it is characterized in that the length of described sample cell (9) is 10 centimetres, and width is 1 centimetre, highly is 4.5 centimetres.
7. eider down as claimed in claim 1 detects and uses turbidimeter, it is characterized in that, further comprises case (11); Described light supply apparatus, monochromatic light generating apparatus, focus lamp (8), sample cell (9) all are arranged on described case (11) inside with pick-up unit (10).
8. eider down as claimed in claim 4 detects and uses turbidimeter, it is characterized in that, further comprises:
Regulating device, it is connected with described monochromatic light generating apparatus.
9. eider down as claimed in claim 8 detects and uses turbidimeter, it is characterized in that described regulating device comprises:
Adjuster bar (12), the one end is connected with the inner drive unit that divides;
Regulate index dial (13), it is arranged on the body of rod of described adjuster bar (12);
The inner drive unit that divides, it is connected with described grating (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220748290 CN203117100U (en) | 2012-12-28 | 2012-12-28 | Turbidimeter for detecting down |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220748290 CN203117100U (en) | 2012-12-28 | 2012-12-28 | Turbidimeter for detecting down |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203117100U true CN203117100U (en) | 2013-08-07 |
Family
ID=48897435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220748290 Expired - Lifetime CN203117100U (en) | 2012-12-28 | 2012-12-28 | Turbidimeter for detecting down |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203117100U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112240871A (en) * | 2020-09-25 | 2021-01-19 | 河南工业大学 | A rice freshness measuring instrument and method of using the same |
-
2012
- 2012-12-28 CN CN 201220748290 patent/CN203117100U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112240871A (en) * | 2020-09-25 | 2021-01-19 | 河南工业大学 | A rice freshness measuring instrument and method of using the same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130807 |
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| CX01 | Expiry of patent term |