CN201732058U - Full-automatic liquid turbidity test instrument - Google Patents
Full-automatic liquid turbidity test instrument Download PDFInfo
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- CN201732058U CN201732058U CN2010202099697U CN201020209969U CN201732058U CN 201732058 U CN201732058 U CN 201732058U CN 2010202099697 U CN2010202099697 U CN 2010202099697U CN 201020209969 U CN201020209969 U CN 201020209969U CN 201732058 U CN201732058 U CN 201732058U
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- photocell
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- test
- test chamber
- liquid turbidity
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Abstract
The utility model provides a full-automatic liquid turbidity test instrument which comprises a test chamber, a test container is arranged in the center of the test chamber, a lens group is arranged on the left side of the test chamber, a first lens is arranged on the right side of the test chamber, a second lens is arranged on the upper side of the test chamber, a light source is arranged in front of the lens group, a comparison photocell and a measuring photocell are arranged in front of the first lens and the second lens respectively, and external analysis equipment is connected with the signal terminals of the comparison photocell and the measuring photocell. Based on the light transmission and scattering principle, the light signals collected by the comparison photocell (6) and a measuring photocell (9) are subjected to the photoelectric conversion by the external analysis equipment, the circuit amplification and the data processing, so as to gain relatively accurate liquid turbidity. The utility model has the characteristics of simple structure, convenient use, stable performance and high accuracy.
Description
Technical field
The utility model relates to the liquid testing technology, particularly a kind of fully automatic liquid turbidity tester.
Background technology
At present, except several big beer brewery groups have the nephelometer of foreign brand name the beer turbidity is carried out the quantitative mensuration, all the other middle or small factories all adopt visual turbidimetry that the beer turbidity is detected.
External nephelometer costs an arm and a leg; This method of range estimation was not only loaded down with trivial details, error but also big and vary with each individual, and can only analyze qualitatively, can not quantitative test.
Summary of the invention
In order to overcome the defective of above-mentioned prior art, the purpose of this utility model is to provide a kind of fully automatic liquid turbidity tester, and this instrumentation is simple, and is easy to use, stable performance, and the precision height is not subjected to the influence of beer color.
In order to achieve the above object, the technical solution of the utility model is achieved in that
A kind of fully automatic liquid turbidity tester, it is characterized in that, comprise a test cabinet 7, the center of test cabinet 7 is provided with test container 4, and the left side of test cabinet 7 disposes lens combination 2, and the right side disposes first transmissive mirror 5, upside is provided with second photoscope 8, the place ahead that the place ahead of lens combination 2 is provided with light emitting source 1, the first transmissive mirror 5 and second photoscope 8 is respectively arranged with comparison photoelectric cell 6 and measurement photoelectric cells 9, and relatively the signal end of photoelectric cell 6 and measurement photoelectric cells 9 is connected with the analytical equipment of outside.
There is the centralising device 3 of adjustment the inside of described test cabinet 7, the arranged outside of test container 4.
The utility model utilizes optical transmission and scattering principle, and the light signal that relatively photoelectric cell 6 and measurement photoelectric cells 9 are collected is through the opto-electronic conversion of external analysis equipment, and circuit amplifies, and data processing etc. obtain liquid turbidity comparatively accurately.
Description of drawings
Accompanying drawing is a structure principle chart of the present utility model.
Embodiment
Below in conjunction with accompanying drawing structural principle of the present utility model and principle of work are described in detail.
With reference to accompanying drawing, a kind of fully automatic liquid turbidity tester, comprise a test cabinet 7, it is a darkroom that distilled water is housed, the center of test cabinet 7 is provided with test container 4, special consumption contain fluid, the left side of test cabinet 7 disposes lens combination 2, make convergence of rays near sample, make it to produce transmission and scattering, the right side disposes first transmissive mirror 5, and lens light is focused on the comparison photoelectric cell 6, upside is provided with second photoscope 8, the scattered light of 90 ° of directions is focused on the measurement photoelectric cells 9 in the place ahead, and the place ahead that the place ahead of lens combination 2 is provided with light emitting source 1, the first transmissive mirror 5 and second photoscope 8 is respectively arranged with comparison photoelectric cell 6 and measurement photoelectric cells 9, convert light intensity to electric signal and be input in the circuit, relatively the signal end of photoelectric cell 6 and measurement photoelectric cells 9 is connected with the analytical equipment of outside.
There is the centralising device 3 of adjustment the inside of described test cabinet 7, the arranged outside of test container 4, can make sample be in fixing center.
Principle of work of the present utility model is: the turbidity with test beer is an example, pour beer into test container 4, open light source 1, light source is through the convergence of lens combination 2, pass through the transmission and the scattering of first transmissive mirror 5 and second photoscope 8 again, the light signal of tested beer is collected on comparison photoelectric cell 6 and the measurement photoelectric cells 9, analyzed the turbidity of beer at last by the analytical equipment of outside.
Present embodiment adopts beer to work as fluid to be measured, and its principle analysis is as follows:
So 1, beer has turbidity to be exactly because it has the colloidal impurity of various suspensions, and various ion components are arranged, and since the protein produce of fermenting, fat etc. change along with the variation of temperature and time.What wherein have the greatest impact is ferric ion and dissolved oxygen DO, and ferric ion causes the early stage muddiness of beer, and dissolved oxygen DO causes the permanent muddiness of beer.
2, according to the Rayleigh Study on Theory, the light scattering stochastic distribution isotropy that pure water causes, and the particle more much smaller than wavelength can be obtained by following formula along the direction radiation intensity:
Here it is famous wavelength fourth-power law.Through the passageway gloomy and Hulburd studies show that the wavelength fourth-power law is deferred in the light scattering that pure water causes roughly, the chromatic dispersion of considering refractive index n again with the relation of different depth pressure p is
Effect after, Morrell is accurate to power exponent-4.32.In the 914th page in optics handbook, can find pure water and the seawater scattering coefficient when 90 ° of directions.We also just can find when green wavelength is 565nm the scattering coefficient 0.86 of 90 ° of directions in pure water so.
3, we are from the conclusion of forefathers' research---can know the plum formula theory, and when N particle arranged in each unit volume, scattering coefficient:
Wherein: D-particle diameter, N-particle number, K-efficiency factor coefficient.The scattering coefficient that multiple particle complication system is arranged:
Hence one can see that, and particle is many more, and particle diameter is big more, and scattering coefficient is just high more.We just utilize this principle, compare by the transmitted light flux of measured object and the luminous flux of scattered light with Ray Of Light, and through the amplification of Circuits System, data processing shows with numeral at last.
What 4, we adopted in the beer nephelometer is monochromatic green glow, and we utilize formula
Just can obtain the value of volume scattering function at angle θ: wherein E is the illumination of falling on the scattering volume Δ V, and L (or I) is because of the measured radiance of scattering (or radiation intensity) on specified angle θ.This equation can be write as:
Wherein E θ is positioned at angle θ and to the illumination on the light source detector of scatterer.R is the distance between Δ V and the light source detector.This form of equation is particularly useful for experimental measurement (promptly when r comparatively hour).β (90 °) is called Rayleigh ratio.At the Rayleigh ratio that can find equally on the optics handbook on β (90 °) direction.
5, because beer also is a kind of liquid of homogeneous transparent, various suspension colloid particle, fat, albumen are arranged just ... etc. multiple particle.Famous wavelength fourth-power law in the comprehensive utilization Rayleigh theory, scattering coefficient in the plum formula theory in the complication system, the principles such as Rayleigh ratio of volume scattering function β (90 °) are added advanced semiconductor monochromatic source and Circuits System, are not difficult to measure the turbidity value of beer.
6, at nephelometer, designing institute is that in order to reduce the attenuation of glass, nephelometer and external calibration are so select green because beer bottle of China all is green (brown is few) basically to select green light as light source.
7, on principle, these factors are depended in the measurement of bottled beer:
(1), the thickness of bottle will cause the decay of transmitted light and scattered light.
(2), bottle in uneven thickness, will cause error.
(3), revolution is measured data for moving 90 ° when measuring, measured four data are got its mean value, and error can compensate mutually like this, reduces the measuring error of mean value.
(4), make light attenuation, the off-centre of bottle also will cause error so, and this also is that the utility model is provided with the reason of adjusting centralising device 3 as fruit beer itself.
(5), bottle itself is irregular, shows that wearing and tearing and cut etc. all cause measuring error very much.
8, the turbidity value of beer is not subjected to the influence of beer color:
The photometry theory is told luminous flux and transmitted light flux (the comprising scatter light flux) sum that our total incident flux equals reflection flux, absorption.The measured object particle is many more, and is also just muddy more.When sample one timing, the ratio of each one of luminous flux is fixed, and the ratio of transmitted light and scattered light is also constant.
Suppose that sample is colourless, the incident flux that enters liquid is E (not considering the reflection of liquid surface and the absorption of liquid), then emergent light flux E
o, transmitted light flux E
a, scatter light flux E
bRelation between the three: E
o=E
a+ E
b, turbidity=K*E
b/ E
a
If have the color of the different depths, some luminous flux is absorbed so, but the constant rate of transmission and scattering.If the transmission amount of fluid to be measured is T, then have:
Emergent light flux: E
O`=T*E
o
Transmitted light flux: E
A`=T*E
a
Scatter light flux: E
B`=T*E
b
This just tell we no matter the attenuation coefficient of light how to change, their ratio is constant, so the beer turbidity is also just constant.
Beer turbidity value=K* scatter light flux/transmitted light flux
=K* measuring-signal/comparison signal
Consider absorptivity T, then have:
Turbidity=K*E
B`/ E
A`=K*T E
b/ T E
a=K*E
b/ E
a
Claims (2)
1. fully automatic liquid turbidity tester, it is characterized in that, comprise a test cabinet (7), the center of test cabinet (7) is provided with test container (4), the left side of test cabinet (7) disposes lens combination (2), the right side disposes first transmissive mirror (5), upside is provided with second photoscope (8), the place ahead of lens combination (2) is provided with light emitting source (1), the place ahead of first transmissive mirror (5) and second photoscope (8) is respectively arranged with comparison photoelectric cell (6) and measurement photoelectric cells (9), and relatively the signal end of photoelectric cell (6) and measurement photoelectric cells (9) is connected with the analytical equipment of outside.
2. a kind of fully automatic liquid turbidity tester according to claim 1 is characterized in that, the inside of described test cabinet (7), and the arranged outside of test container (4) has adjustment centralising device (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202099697U CN201732058U (en) | 2010-06-01 | 2010-06-01 | Full-automatic liquid turbidity test instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202099697U CN201732058U (en) | 2010-06-01 | 2010-06-01 | Full-automatic liquid turbidity test instrument |
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| CN201732058U true CN201732058U (en) | 2011-02-02 |
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| CN2010202099697U Expired - Fee Related CN201732058U (en) | 2010-06-01 | 2010-06-01 | Full-automatic liquid turbidity test instrument |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288581A (en) * | 2011-07-29 | 2011-12-21 | 南京诺尔曼生物技术有限公司 | Specific protein measuring method and device |
| CN103454252A (en) * | 2013-09-02 | 2013-12-18 | 苏州奥特福环境科技有限公司 | Dual optical path type scattered water quality turbidity measurement apparatus |
| CN104048920A (en) * | 2014-06-24 | 2014-09-17 | 深圳市锦瑞电子有限公司 | Turbidimeter and liquid analysis equipment |
| CN104198444A (en) * | 2014-09-17 | 2014-12-10 | 道道全粮油股份有限公司 | Device and method for quickly measuring content of wax in oil product |
| CN104374750A (en) * | 2014-11-28 | 2015-02-25 | 南京信息工程大学 | Water turbidity measuring device, system and method |
| CN105300929A (en) * | 2015-11-02 | 2016-02-03 | 深圳市智水小荷技术有限公司 | Turbidity measurement method and device |
| CN107003230A (en) * | 2014-09-29 | 2017-08-01 | Bd科斯特公司 | Equipment and its cuvette for the fluid sample of optical check small size |
-
2010
- 2010-06-01 CN CN2010202099697U patent/CN201732058U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288581A (en) * | 2011-07-29 | 2011-12-21 | 南京诺尔曼生物技术有限公司 | Specific protein measuring method and device |
| CN102288581B (en) * | 2011-07-29 | 2016-04-27 | 南京诺尔曼生物技术有限公司 | A kind of specific protein measuring method and device |
| CN103454252A (en) * | 2013-09-02 | 2013-12-18 | 苏州奥特福环境科技有限公司 | Dual optical path type scattered water quality turbidity measurement apparatus |
| CN103454252B (en) * | 2013-09-02 | 2015-12-02 | 苏州奥特福环境科技有限公司 | Double light path scattering water quality turbidity measurer |
| CN104048920A (en) * | 2014-06-24 | 2014-09-17 | 深圳市锦瑞电子有限公司 | Turbidimeter and liquid analysis equipment |
| CN104048920B (en) * | 2014-06-24 | 2016-09-07 | 深圳市锦瑞生物科技有限公司 | A kind of scopometer and fluid analysis equipment |
| CN104198444A (en) * | 2014-09-17 | 2014-12-10 | 道道全粮油股份有限公司 | Device and method for quickly measuring content of wax in oil product |
| US10935490B2 (en) | 2014-09-29 | 2021-03-02 | Bd Kiestra B.V. | Apparatus for optical inspection of small volumes of liquid sample and cuvettes therefor |
| CN107003230A (en) * | 2014-09-29 | 2017-08-01 | Bd科斯特公司 | Equipment and its cuvette for the fluid sample of optical check small size |
| CN104374750B (en) * | 2014-11-28 | 2017-01-11 | 南京信息工程大学 | Water turbidity measuring device, system and method |
| CN104374750A (en) * | 2014-11-28 | 2015-02-25 | 南京信息工程大学 | Water turbidity measuring device, system and method |
| CN105300929A (en) * | 2015-11-02 | 2016-02-03 | 深圳市智水小荷技术有限公司 | Turbidity measurement method and device |
| CN105300929B (en) * | 2015-11-02 | 2018-10-09 | 深圳市智水小荷技术有限公司 | The measurement method and device of turbidity |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Dong Geping Inventor after: Yu Changfeng Inventor after: Ren Ping Inventor after: An Liping Inventor after: Shi Junwen Inventor before: Zhang Youliang Inventor before: Zhang Guoan Inventor before: Li Meichuan Inventor before: Gou Xiangmin Inventor before: Wang Jianfeng |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: ZHANG YOULIANG ZHANG GUOAN LI MEICHUAN GOU XIANGMIN WANG JIANFENG TO: DONGGEPING YU ZHANGFENG REN PING AN LIPING SHI JUNWEN |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110202 Termination date: 20130601 |