CN108195998A - A kind of laboratory COD automatically analyzes robot - Google Patents
A kind of laboratory COD automatically analyzes robot Download PDFInfo
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- CN108195998A CN108195998A CN201810059775.4A CN201810059775A CN108195998A CN 108195998 A CN108195998 A CN 108195998A CN 201810059775 A CN201810059775 A CN 201810059775A CN 108195998 A CN108195998 A CN 108195998A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/16—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using titration
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
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Abstract
The invention discloses a kind of laboratory COD to automatically analyze robot, including main body and the sample column being arranged on main body, heating position, reflux, cooling position, titration position, mechanical arm and liquid feeding system, the bottom of the main body is equipped with sample column, it is equipped with for placing the outside of the sample column of specimen cup for the heating position heated to specimen cup, the beneficial effects of the invention are as follows：The batch that the present apparatus can complete the COD of multiple samples every time measures, after first sample detection result comes out, probably a data were come out every 10 minutes, detection efficiency is greatly improved, whole without manually guarding, it is with uniformity that each sample measures flow, the minute of parallel sample is completely the same, human interference factor is avoided, measurement result has preferable reproducibility, and preci-sion and accuracy is higher.
Description
Technical field
The present invention relates to a kind of analytical instrument, specifically a kind of laboratory COD automatically analyzes robot.
Background technology
《The measure dichromate titration of water chemical oxygen demand》(HJ 828-2017) is that current China's water body chemical is aerobic
The main method of monitoring is measured, the whole nation generates a large amount of monitoring data according to this every year.Because this method accuracy is higher, existing system
Error is constant, it is self-evident as universally recognized standard method advantage.However, the chemistry of water body is measured using this method to be needed
During oxygen amount, have the following problems：(1) completing entire detection process needs a variety of auxiliary experimental equipments, and occupied space is big；(2) it is right
The technical merit of tester is more demanding, and it is big to operate labor intensity；(3) it is long to measure elapsed time, even if experienced
Operator's single also more intractable many samples.(4) easily generate the error artificially measured, it is difficult to realize truly
The batch detection of sample under equal conditions.
At present, the instrument and equipment of the domestic detection for being directed to laboratory chemical oxygen demand, focuses mostly in digestion device and titration
Instrument, entire test process still need more artificial interference, realize that the batch detection of sample is still difficult under equal conditions.
In the product introduction and document that can carry out laboratory chemical oxygen demand automatic batch detection few in number, described device is all
The judgement of titration end-point is carried out using electrode, i.e., is stretched into digestion tube in titration process using electrode or endpoint sensor
And realize the judgement of titration end-point.Due to can more or less cause the damage of sample liquid during the stretching into and take out of electrode
Consumption, in the continuous detection process of sample, is also easier to cause cross-infection, i.e., the titration outfit is tied to a certain extent to measuring
The accuracy of fruit has a certain impact.From described in document, it is to be understood that the device is when adding silver sulfate-sulfuric acid solution
It is added in before condenser pipe is docked with specimen cup, the slave condenser pipe upper end described in HJ 828-2017 standards is slowly added to difference very
Greatly, also therefore measurement result may be made to generate deviation.In addition, the device is when carrying out batch detection sample, it is that batch sample is same
When clear up and cooling, then stepwise titration again, this so that the determination condition of each sample is different, particularly first and most
The determination condition difference of one sample following is most apparent, therefore there is no the inspections for really realizing sample under equal conditions for this batch of sample
It surveys.
Separately：Application No. is laboratory chemical oxygen demand automatic analysing apparatus a kind of disclosed in 201410038288.1, applications
Number automatically analyze that robot, application No. is disclosed in 201420220357.6 for laboratory COD disclosed in 201520438901.9
A kind of full-automatic COD titrators, application No. is air-cooled COD digestion devices a kind of disclosed in 201620355434.8, application No. is
201510986819.4 a kind of disclosed intelligence COD resolutions instrument, application No. is coulombs a kind of disclosed in 201620732532.9
It titrates COD test equipments and application No. is COD openings micro-pipe digestion instrument a kind of disclosed in 201520971976.3, main problems
Concentrate on the following：
(1) although the theory based on batch resolution, can clear up multiple samples simultaneously, however in subsequent process flow also
It is to need largely manually to be interfered, entire test process is still time-consuming and laborious, inefficiency, and is difficult to realize equal conditions
The measure of lower batch sample；
(2) in document COD autotitrators design, be substantially using electrode carry out titration end-point judgement, the dress
Putting needs electrode or endpoint sensor that the judgement of titration end-point is stretched into digestion tube and realized in titration process.This makes
The problem of obtaining in the multiple samples of METHOD FOR CONTINUOUS DETERMINATION, easily causing secondary pollution or cross-infection.
(3) intelligence COD clears up the invention of instrument and COD titrators, instead of part manual working so that water body chemical needs
Resolution or titration operation in oxygen determination flow are automatically performed by instrument, however keep or have certain from whole unmanned force value
Distance；
And only a laboratory COD automatic analyzers on domestic market, it is limited by Shijiazhuang De Run environmental protection science and technology
Company is produced.There are following drawbacks for the device：(a) judgement of titration end-point is carried out when testing and analyzing using electrode, by drop
The movement of device is determined to realize the titration of next sample, this causes it to be easier to cause sample cross sense during Continuous Titration
Dye influences the accuracy of measurement result；(b) it is not according to HJ 828-2017 standards in addition plus silver sulfate-sulfuric acid solution
It is described to be slowly added to from condenser pipe upper end, but added in before condenser pipe is docked with specimen cup, which may cause low boiling point
Organic matter escapes, and makes measurement result less than normal；(c) when the device carries out multiple parallel sample batch detections, each not phase of minute
Together, it is not carried out the measure of batch sample under truly equal conditions.
Invention content
The purpose of the present invention is to provide a kind of laboratory COD to automatically analyze robot, to solve in above-mentioned background technology
The problem of proposition.
To achieve the above object, the present invention provides following technical solution：
A kind of laboratory COD automatically analyzes robot, including main body and the sample column being arranged on main body, heating
Position, reflux, cooling position, titration position, mechanical arm and liquid feeding system, the bottom of the main body are equipped with sample column, are used for
The outside of the sample column of specimen cup is placed equipped with the heating position for being heated to specimen cup；
The bottom position of the main body is additionally provided with cooling position, and the lower section for cooling down position is equipped with recirculating cooling water system device,
The side of cooling position is equipped with wind turbine；
The reflux includes condenser pipe, on the side wall of main body is equipped with that condenser pipe is fixed on the positioning
Condense pipe support；
The main body is equipped with mechanical arm and lower mechanical arm, wherein upper mechanical arm is installed on the top of condenser pipe, and
The bottom of upper mechanical arm is equipped with the Y-axis mobile platform that the upper mechanical arm of driving is moved in Y direction, the bottom of the lower mechanical arm
The Three Degree Of Freedom mobile platform that the lower mechanical arm of driving moves in the horizontal and vertical directions is installed, is installed on lower mechanical arm useful
In gripping condenser pipe and multigroup mechanical gripper of specimen cup；
The titration position includes magnetic stirring apparatus device and bionics distinguishes color device automatically, and magnetic stirring apparatus device is mounted on
The bottom of specimen cup, the surface of specimen cup are equipped with drip nozzle；
The liquid feeding system includes the liquid feeding pipeline of six tunnel independences, six road liquid feeding pipelines respectively at hold sulfuric acid mercury solution,
Potassium bichromate standard solution, silver sulfate-sulfuric acid solution, distilled water, ferroin indicator solution and iron ammonium sulfate standard are molten
The reagent bottle connection of liquid, wherein, two liquid feeding pipelines are mounted on upper mechanical arm, for from condenser pipe upper end add in silver sulfate-
Sulfuric acid solution and distilled water, two liquid feeding pipelines are connect with the drip nozzle above specimen cup, and for titrating when is added dropwise into digestion solution
Ferroin indicator solution and iron ammonium sulfate standard solution, more than four liquid-feeding tubes road be mounted on peristaltic pump, remaining
Two liquid feeding pipelines are fitted in the mechanical gripper in lower mechanical arm, for adding sulfuric acid mercury solution and potassium bichromate to specimen cup
Standard solution, two above liquid-feeding tube road are equipped with plunger pump；
The heating position, cooling position, upper mechanical arm, lower mechanical arm, peristaltic pump and plunger pump are controlled with computer and are connected.
As further embodiment of the present invention：The sample column includes left sample column and right sample column, left sample column and the right side
Multiple fixed bits for being used to fix specimen cup are equipped in sample column, cooling position is between left sample column and right sample column.
As further scheme of the invention：The heating position includes left bank heating position and right row heats position, and left bank adds
Thermal potential and right row heat the outside that position is respectively placed in left sample column and right sample column, and left bank heating position and right row are heated in position
Equipped with independent heating unit.
As further scheme of the invention：The heating unit is controlled by temperature programmed control device.
Compared with prior art, the beneficial effects of the invention are as follows：(1) present apparatus can complete the chemistry of multiple samples every time
The batch of oxygen demand measures, and after first sample detection result comes out, probably came out a data every 10 minutes, greatly carries
High detection efficiency；
(2) present apparatus can realize that instrument carries out automatic lot measure, whole without manually guarding；
(ancillary equipments various needed for chemical oxygen demand detection process are all concentrated on one by 3 present apparatus, have been carried out
U.S.'s combination, makes full use of and has saved space；
(4) present apparatus, to realize that batch sample automatically measures, is ensureing detection effect using the pattern continuously detected successively
While rate, make full use of and saved device resource；
(5) using color change automatic decision titration end-point, human eye error in judgement has been evaded, the color change with National Standard Method
Judge that titration end-point is consistent；
(6) each sample measure flow is with uniformity, and the minute of parallel sample is completely the same, avoids human interference
Factor, measurement result have preferable reproducibility, and preci-sion and accuracy is higher.
Description of the drawings
Fig. 1 is the structure diagram that a kind of laboratory COD automatically analyzes robot.
Fig. 2 is the structure diagram that a kind of laboratory COD automatically analyzes upper mechanical arm in robot.
Fig. 3 is the structure diagram that a kind of laboratory COD automatically analyzes lower mechanical arm in robot.
Fig. 4 is the structure diagram that a kind of laboratory COD automatically analyzes liquid feeding system in robot.
Fig. 5 is that a kind of laboratory COD automatically analyzes the structure diagram that position is heated in robot.
Fig. 6 is that a kind of laboratory COD automatically analyzes the structure diagram that position is titrated in robot.
Fig. 7 is the control principle drawing that a kind of laboratory COD automatically analyzes robot.
In figure：1- main bodies, 2- sample columns, 3- coolings position, 4- heating position, 5- condenser pipes, 6- condensations pipe support, the upper machineries of 7-
Mechanical arm, 9- mechanical grippers, 10- drip nozzles, 11- peristaltic pumps, 12- reagent bottles, 13- computers, 14- plunger pumps, 15- under arm, 8-
Specimen cup, 16- bionics distinguish color device, 17- magnetic stirring apparatus device, 18- wind turbines, 19- heating units automatically.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment shall fall within the protection scope of the present invention.
Please refer to Fig.1~7, in the embodiment of the present invention, a kind of laboratory COD automatically analyzes robot, including 1 He of main body
Sample column 2, heating position 4, reflux, cooling position 3, titration position, mechanical arm and the liquid feeding system being arranged on main body 1,
The bottom of the main body 1 is equipped with sample column 2, is equipped with for placing the outside of the sample column 2 of specimen cup 15 for sample
The heating position 4 that product cup 15 is heated can carry out heating resolution to the sample in specimen cup 15；
The bottom position of the main body 1 is additionally provided with cooling position 3, and the lower section for cooling down position 3 is filled equipped with recirculating cooling water system
It puts, the side of cooling position 3 is equipped with wind turbine 18, for the cooling of digestion solution；
The reflux includes condenser pipe 5, is equipped on the side wall of main body 1 solid for condenser pipe 5 position
Fixed condensation pipe support 6；
The main body 1 is equipped with mechanical arm 7 and lower mechanical arm 8, wherein upper mechanical arm 7 is installed on the upper of condenser pipe 5
Side, and the bottom of upper mechanical arm 7 is equipped with the Y-axis mobile platform that the upper mechanical arm 7 of driving is moved in Y direction, the lower machinery
The bottom of arm 8 is equipped with the Three Degree Of Freedom (i.e. X-axis, Y-axis and Z axis) that the lower mechanical arm 8 of driving moves in the horizontal and vertical directions
Mobile platform is equipped with multigroup mechanical gripper 9 for gripping condenser pipe 5 and specimen cup 15 on lower mechanical arm 8, by X-axis,
Movement in Y-axis and Z-direction realizes the crawl to condenser pipe 5 and specimen cup 15 in sample column 2, heating position 4 and cooling position 3
Between movement；
The titration position includes magnetic stirring apparatus device 17 and bionics distinguishes color device 16, magnetic stirring apparatus device 17 automatically
Mounted on the bottom of specimen cup 15, the surface of specimen cup 15 is equipped with drip nozzle 10, and bionics distinguishes that color device 16 includes light source automatically
And color sensor device, can color device 16 be distinguished according to the automatic judgement for carrying out titration end-point of variation of color, bionics automatically
Belong to the prior art, do not carry out extra explanation to it herein, but do not influence the integrality of overall technical architecture；
The liquid feeding system includes the liquid feeding pipeline of six tunnel independences, six road liquid feeding pipelines respectively at hold sulfuric acid mercury solution,
Potassium bichromate standard solution, silver sulfate-sulfuric acid solution, distilled water, ferroin indicator solution and iron ammonium sulfate standard are molten
The reagent bottle 12 of liquid connects, wherein, two liquid feeding pipelines are mounted on upper mechanical arm 7, for adding in sulfuric acid from 5 upper end of condenser pipe
Silver-sulfuric acid solution and distilled water, the drip nozzle 10 of 15 top of two liquid feeding pipelines and specimen cup are connect, to digestion solution during for titrating
Middle dropwise addition ferroin indicator solution and iron ammonium sulfate standard solution, more than four liquid-feeding tubes roads be mounted on peristaltic pump
11, other two liquid feeding pipeline is fitted in the mechanical gripper 9 in lower mechanical arm 8, molten for adding mercuric sulfate to specimen cup 15
Liquid and potassium bichromate standard solution, two above liquid-feeding tube road are equipped with plunger pump 14, can be in the different experimental stages
Carry out the automatic addition of solution；
The heating position 4, cooling position 3, upper mechanical arm 7, lower mechanical arm 8, peristaltic pump 11 and plunger pump 14 are and computer
13 control connections, can act it by computer 13 and control.
The sample column 2 includes left sample column and right sample column, and multiple be used for is equipped in left sample column and right sample column
The fixed bit of fixed specimen cup 15, placing the number of specimen cup 15 can design according to the demand of experimenter, and cooling position 3 is in
Between left sample column and right sample column.
The heating position 4 includes left bank heating position and right row heats position, and left bank heating position and right row heat position and be respectively placed in
The outside of left sample column and right sample column, left bank heating position and right row heat in position and are equipped with independent heating unit 19.
The heating unit 19 is controlled by temperature programmed control device, can control chemical reaction condition, will according to experiment
It asks and heating resolution is carried out to sample liquid.
The present invention operation principle be：Implosion guard pearl and stirrer are put into specimen cup 15 first, prepare liquid or sky
White liquor is added in specimen cup 15, sample of the two set liquid-feeding tubes into sample column 2 in the mechanical gripper 9 of lower mechanical arm 8
Cup 15 adds in required two kinds of reagents (sulfuric acid mercury solution and potassium bichromate standard solution)；
After having added both reagents, mechanical gripper 9 captures specimen cup 15, puts to heating position 4, and then organizes mechanical gripping separately
Hand 9 capture condenser pipe 5 docked with specimen cup 15, after the completion of docking, upper mechanical arm 7 from 5 upper end of condenser pipe addition silver sulfate-
Sulfuric acid solution, the heating unit 19 at the same time heating 4 bottom of position carry out specimen cup 15 heating timing, constant temperature digestion 2 hours
Afterwards, upper mechanical arm 7 adds in distilled water flushing condenser pipe 5 from 5 upper end of condenser pipe；
After the completion of flushing, upper mechanical gripper 9 captures condenser pipe 5 and puts back to condensation pipe support 6, and mechanical gripper 9 captures specimen cup 15
Cooling position 3 is put into, the liquid in specimen cup 15 is cooled to room temperature 25 DEG C；
After cooling, specimen cup 15 is moved to titration position, and in the control of computer 13 by mechanical gripper 9 from cooling position 3
Under, magnetic stirring apparatus device 17 starts to stir, and ferroin indicator solution and sulfuric acid are added dropwise into digestion solution successively for drip nozzle 10
Ferrous ammonium standard solution, iron ammonium sulfate standard solution are added in a manner of titrating in specimen cup 15, while utilize bionics
The automatic judgement distinguished color device 16 and carry out titration end-point, after the completion of titration, automatic recording titration volume calculates COD,
And be shown on computer 13, then mechanical gripper 9 grabs specimen cup 15 to original sample grade.
During batch detection sample, instrument carries out automatic, follow-on test, as follows automatic work, first specimen cup
15, by liquid feeding (addition sulfuric acid mercury solution and potassium bichromate standard solution), move to heating position 4 and add in sulphur from 5 upper end of condenser pipe
After sour silver-sulfuric acid solution, instrument can to second and third, the specimen cups 15 such as four carry out same experimental implementation, between each specimen cup 15
It is about 10 minutes every the time, after the completion of the filling operation of silver sulfate-sulfuric acid solution of the 11st specimen cup 15, first at this time
15 heating time of specimen cup reaches 2 hours, and after distilled water flushing condenser pipe 5, specimen cup 15 is moved to cooling position 3；New sample
Product cup 15 is carried out identical experimental implementation and moves to the heating position 4 just vacated, and 15 heating time of specimen cup of heating position 4 arrives
Cooling position 3 is moved to afterwards and successively, when cooling position 3 is filled up successively, the liquid in first specimen cup 15 has cooled to room
25 DEG C of temperature is moved to titration position, and completes titration operation, and after obtaining a result, tool handgrip specimen cup 15 will be grabbed to original sample grade again,
Vacate titration position, in this way, at interval of about 10 minutes, instrument can an automatically derived sample testing result, treat all samples according to
Secondary detection is completed, and is as a result automatically saved in the database, in batch detection parallel sample, the detection time of each sample is complete
It is identical.
It is obvious to a person skilled in the art that the present invention is not limited to the details of above-mentioned exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Profit requirement rather than above description limit, it is intended that all by what is fallen within the meaning and scope of the equivalent requirements of the claims
Variation is included within the present invention.Any reference numeral in claim should not be considered as to the involved claim of limitation.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in each embodiment can also be properly combined, forms those skilled in the art
The other embodiment being appreciated that.
Claims (4)
1. a kind of laboratory COD automatically analyzes robot, including main body and the sample column being arranged on main body, heating position,
Reflux, cooling position, titration position, mechanical arm and liquid feeding system, which is characterized in that the bottom of the main body is equipped with sample
Column, for placing the outside of the sample column of specimen cup equipped with the heating position for being heated to specimen cup；
The bottom position of the main body is additionally provided with cooling position, and the lower section for cooling down position is equipped with recirculating cooling water system device, cooling
The side of position is equipped with wind turbine；
The reflux includes condenser pipe, and the condensation for condenser pipe to be fixed on the positioning is equipped on the side wall of main body
Pipe support；
The main body is equipped with mechanical arm and lower mechanical arm, wherein upper mechanical arm is installed on the top of condenser pipe, and upper machine
The bottom of tool arm is equipped with the Y-axis mobile platform that the upper mechanical arm of driving is moved in Y direction, the bottom installation of the lower mechanical arm
There is the Three Degree Of Freedom mobile platform that the lower mechanical arm of driving moves in the horizontal and vertical directions, be equipped with to press from both sides on lower mechanical arm
Take multigroup mechanical gripper of condenser pipe and specimen cup；
The titration position includes magnetic stirring apparatus device and bionics distinguishes color device automatically, and magnetic stirring apparatus device is mounted on sample
The bottom of cup, the surface of specimen cup are equipped with drip nozzle；
The liquid feeding system includes the liquid feeding pipeline of six tunnel independences, and six road liquid feeding pipelines are respectively at holding sulfuric acid mercury solution, weight chromium
Sour potassium standard solution, silver sulfate-sulfuric acid solution, distilled water, ferroin indicator solution and iron ammonium sulfate standard solution
Reagent bottle connects, wherein, two liquid feeding pipelines are mounted on upper mechanical arm, for adding in silver sulfate-sulfuric acid from condenser pipe upper end
Solution and distilled water, two liquid feeding pipelines are connect with the drip nozzle above specimen cup, and it is sub- that examination is added dropwise into digestion solution during for titrating
Iron spirit indicator solution and iron ammonium sulfate standard solution, more than four liquid-feeding tubes road be mounted on peristaltic pump, other two
Liquid feeding pipeline is fitted in the mechanical gripper in lower mechanical arm, for adding sulfuric acid mercury solution and potassium bichromate standard to specimen cup
Solution, two above liquid-feeding tube road are equipped with plunger pump；
The heating position, cooling position, upper mechanical arm, lower mechanical arm, peristaltic pump and plunger pump are controlled with computer and are connected.
2. a kind of laboratory COD according to claim 1 automatically analyzes robot, which is characterized in that the sample column packet
Left sample column and right sample column are included, multiple fixed bits for being used to fix specimen cup are equipped in left sample column and right sample column, it is cold
But position is between left sample column and right sample column.
3. a kind of laboratory COD according to claim 2 automatically analyzes robot, which is characterized in that heating position packet
It includes left bank heating position and right row heats position, left bank heating position and right row heat position and be respectively placed in the outer of left sample column and right sample column
At side, left bank heating position and right row heat in position and are equipped with independent heating unit.
4. a kind of laboratory COD according to claim 3 automatically analyzes robot, which is characterized in that the heating unit
It is controlled by temperature programmed control device.
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| CN201810059775.4A CN108195998A (en) | 2018-01-22 | 2018-01-22 | A kind of laboratory COD automatically analyzes robot |
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| CN201810059775.4A CN108195998A (en) | 2018-01-22 | 2018-01-22 | A kind of laboratory COD automatically analyzes robot |
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