CN205246621U - Automatic continuous miniflow system of titrating - Google Patents
Automatic continuous miniflow system of titrating Download PDFInfo
- Publication number
- CN205246621U CN205246621U CN201521127773.2U CN201521127773U CN205246621U CN 205246621 U CN205246621 U CN 205246621U CN 201521127773 U CN201521127773 U CN 201521127773U CN 205246621 U CN205246621 U CN 205246621U
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- titration
- titration cell
- buret
- miniflow
- cell
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- 238000004448 titration Methods 0.000 claims abstract description 134
- 210000005239 tubule Anatomy 0.000 claims abstract description 12
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 238000002347 injection Methods 0.000 claims description 11
- 239000007924 injection Substances 0.000 claims description 11
- 238000007599 discharging Methods 0.000 claims description 10
- 238000013019 agitation Methods 0.000 claims description 9
- 238000005259 measurement Methods 0.000 claims description 7
- 239000007788 liquid Substances 0.000 abstract description 19
- 238000000034 method Methods 0.000 abstract description 10
- 238000003756 stirring Methods 0.000 abstract description 10
- 230000035945 sensitivity Effects 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 18
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000005443 coulometric titration Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The utility model discloses an automatic continuous miniflow system of titrating, which comprises a bracket, step motor, the transmission shaft, the stirring rake, titration cell and adiactinic titration cell shell, the titration cell is located the titration cell shell, the titration cell bottom is equipped with the liquid inlet and outlet pipe, the liquid inlet and outlet pipe passes titration cell shell bottom, the support has adiactinic frame foundation, prop up the frame foundation closing cap at the adiactinic cavity of titration cell shell upper portion formation, be equipped with on the frame foundation and titrate the hole, step motor locates on the support, step motor's output shaft passes through the transmission shaft and is connected with the stirring rake, the stirring rake passes a frame foundation makes the stirring head hang in the titration cell, still include accurate syringe pump, three -way valve, connection tubule and buret, accurate syringe pump is connected with the common port of three -way valve, and a tubule of being connected with letting in in the titrant in the two other interfaces on the three -way valve communicates, and another communicates through connecting tubule and buret upper end, and the buret inserts in the titration cell. It is good that this department unifies method sensitivity, and it is accurate reliable to titrate data.
Description
Technical field
The utility model relates to titrimetry equipment, is specifically related to a kind of Automatic continuous miniflow titration system.
Background technology
Titration is that one adds standard liquid in analyzed solution by amount, and color, precipitation or the conductivity variations etc. that in titration process, cause with component to be measured, titrating solution, product are determined reaction end, the method for analytical solution composition. The principle difference of judging by titration end-point, titration can be divided into photometric titration, constant-current titration, coulometric titration etc.; By the difference of reaction principle, can be divided into soda acid, redox, precipitation or complexometry etc.
Drop reaction is analytical method conventional in lab analysis, has a lot of indexs to measure with drop reaction. But drop reaction is very high to manually-operated requirement in laboratory, and the amount of reagent consuming is very large.
Existing titration outfit adopts electromagnetic agitation more, but the mixed effect of electromagnetic agitation is not fine, particularly in the situation that titrating solution is darker. Existing titration outfit adopts dropwise titration, and due to the about 0.25ml of every drop of liquid, this will affect data resolution, and in the time of the small volume of solution undetermined, the sensitivity of the method obviously reduces.
Due to these reasons, prior art is unsuitable for miniaturization, the automation of drop reaction especially.
Summary of the invention
In order to address the above problem, the utility model provides a kind of Automatic continuous miniflow titration system, and this system mix and blend is effective, and operating efficiency is high, can realize the trickle Continuous Titration of titrating solution, improves titration resolution ratio.
Above-mentioned purpose is achieved by the following technical solution:
A kind of Automatic continuous miniflow titration system, comprises following part:
Mechanical agitation system: comprise support, stepper motor, power transmission shaft, paddle, titration cell and lighttight titration cell shell; Described titration cell is positioned at titration cell shell, and described titration cell bottom is provided with into discharging tube, enters discharging tube through titration cell outer casing bottom; Described support has lighttight carrier base, and carrier base is sealed on titration cell shell upper and forms lighttight cavity, and carrier base is provided with titration hole; Described stepper motor is located on support, and the output shaft of stepper motor is connected with paddle by power transmission shaft, and paddle is suspended from titration cell stirring-head through carrier base;
Continuous microflow titration system: comprise precise injection pump, triple valve, connection tubule and buret; Described precise injection pump is connected with the common port of triple valve, an interface in two other interface of triple valve is communicated with the tubule that is connected passing in titrant, another interface is communicated with buret upper end by connecting tubule, and buret inserts in titration cell by titration hole.
Further, described titration cell shell is also provided with the path channels that can allow light pass titration cell bottom, and described titration cell is colorimetric pool.
Further, be also provided with measurement electrode, measurement electrode is suspended from titration cell through carrier base.
Further, the internal diameter≤1mm of buret.
Further, described titration cell bottom centre is recessed, described in enter discharging tube and be located at bottom centre.
Further, described stirring-head is provided with the blade of four crossing distribution, and the angle of blade and horizontal plane is 30 DEG C.
The beneficial effects of the utility model:
(1) the Automatic continuous miniflow titration system mix and blend that the utility model provides is effective, and operating efficiency is high, and the degree of accuracy is high.
(2) the Automatic continuous miniflow titration system that the utility model provides can be realized the continuous microflow titration of titrating solution, and resolution ratio is high.
(3) the Automatic continuous miniflow titration system that the utility model provides can be realized miniaturization and the automation of titration outfit, improves titration efficiency, reduces reagent consumption.
Brief description of the drawings
Fig. 1 is Automatic continuous miniflow titration system structural representation;
Wherein, 1, support; 2, stepper motor; 3, power transmission shaft; 4, paddle; 5, titration cell; 6, titration cell shell; 7, path channels; 8, enter discharging tube; 9, enter outage; 10, carrier base; 11, titration hole; 12, stirring-head.
Detailed description of the invention
Describe the technical solution of the utility model in detail below in conjunction with specific embodiment.
A kind of Automatic continuous miniflow titration system, comprises mechanical agitation system and continuous microflow titration system:
Mechanical agitation system as shown in Figure 1, comprises support 1, stepper motor 2, power transmission shaft 3, paddle 4, titration cell 5 and lighttight titration cell shell 6. Described titration cell 5 is positioned at titration cell shell 6, and described titration cell 5 bottoms are provided with into discharging tube 8, enters discharging tube 8 through titration cell shell 6 bottoms. Described support 1 has lighttight carrier base 10, and carrier base 10 is sealed on titration cell shell 6 and forms lighttight cavity, and carrier base 10 is provided with titration hole 11. Described stepper motor 2 is located on support 1, and the output shaft of stepper motor 2 is connected with paddle 4 by power transmission shaft 3, and paddle 4 is suspended from titration cell stirring-head 12 through carrier base 10. Described stirring-head 12 is provided with the blade of four crossing distribution, and blade and horizontal plane angle are 30 DEG C.
During for photometric titration, described titration cell shell 6 is also provided with the path channels 7 that can allow light pass titration cell 5 bottoms, and described titration cell 5 is colorimetric pool, and described stirring-head 12 is positioned at path channels 7 level tops. Described lighttight titration cell shell 6 and lighttight carrier base 10 use black nylon materials are made. Paddle 4 and stirring-head 12 are quartzy material. Titration cell 5 bottom centre are recessed, enter discharging tube 8 and are located at bottom centre, thereby be conducive to the emptying rate of liquid in colorimetric pool, are beneficial to the cleaning after experiment finishes, and avoid polluting.
During for electrometric titration, be also provided with measurement electrode, measurement electrode is suspended from titration cell through carrier base.
Continuous microflow titration system comprises precise injection pump, triple valve, connection tubule and buret; Described precise injection pump is connected with the common port of triple valve, an interface in two other interface of triple valve is communicated with the tubule that is connected passing in titrant, another interface is communicated with buret upper end by connecting tubule, and buret inserts in titration cell by titration hole. Internal diameter≤the 1mm of buret. Buret inserts titration cell by titration hole, and buret titration end is positioned at below liquid level in the time of titration, on paddle.
When titration, triple valve first switches to common port and is communicated with the interface that is communicated with titrant, and precise injection pump is drawn titrant; Triple valve is switched to the interface connection that common port is communicated with buret again, slowly promote precise injection pump, buret inserts in titration cell and realizes miniflow titration under liquid level.
An Automatic continuous miniflow titration method based on above-mentioned Automatic continuous miniflow titration system, comprises following process:
Continuous microflow titration process: add and start stepper motor after titration liquid in titration cell, rotating speed of agitator progressively reaches setting value; After titration liquid stirs evenly, continuous microflow titration system starts titration; Precise injection pump continuously and smoothly injects titrant in titration cell, buret one end is positioned at treats that titration liquid levels is with on lower stirring paddle, titrant continuously and smoothly sneaks into and treats in titration liquid, under stirring action, rapid mixing is also reacted, and treats the detection data of titration liquid by path channels or the analysis of measurement electrode synchronous acquisition;
Automatic control process: judge titration end-point according to the detection data for the treatment of titration liquid, after arrival titration end-point, titration stops titration in 1 ~ 20 second automatically again, then the detection data that gather by analytical calculation obtain titration end-point accurately;
Cleaning process: after titration completes, first stop continuous microflow titration, then stop mechanical agitation, discharge liquid in titration cell, last continuous microflow titration system continues plug-flow titrant, plug-flow titrant column length >=1cm again, suck afterwards, makes air column length >=5mm; Enter cleaning fluid to titration cell, cleaning fluid liquid level height of liquid level in titration cell when dripping off into, stirring and washing, discharges cleaning fluid, cleans 1 ~ 3 time.
Before titration starts, in described continuous microflow titration system, be full of titrating solution, only insert one section of air column of one end reservation of titration cell at buret, air column length >=5mm.
Titrant injection rate≤0.01ml/s, detection data acquiring frequency >=5 of titration liquid/s.
Described mechanical agitation system, in whipping process, will guarantee titrating solution and treat that titrating solution mixes very soon and complete while reaching maximum mixing speed, and do not produce bubble stirring in liquid.
Paddle in described mechanical agitation system has paddle, and paddle and horizontal plane form acute angle, thereby can impel liquid to move up and down, and accelerates titrating solution and treats mixing of titrating solution.
The method of described continuous microflow titration refers to, titrant is entered continuously and treats in titrating solution with very little flow velocity (miniflow) by precise injection pump, react by continuous stirring rapid mixing, dropwise enter from traditional titrant that to treat that titrating solution has significantly different, can significantly improve the performance of titration, reduce the demand of whole system water sample and medicine.
The effect of above-described embodiment is to illustrate essentiality content of the present utility model, but does not limit protection domain of the present utility model with this. Those of ordinary skill in the art should be appreciated that and can modify or be equal to replacement the technical solution of the utility model, and do not depart from essence and the protection domain of technical solutions of the utility model.
Claims (6)
1. an Automatic continuous miniflow titration system, is characterized in that comprising following part:
Mechanical agitation system: comprise support, stepper motor, power transmission shaft, paddle, titration cell and lighttight titration cell shell; Described titration cell is positioned at titration cell shell, and described titration cell bottom is provided with into discharging tube, enters discharging tube through titration cell outer casing bottom; Described support has lighttight carrier base, and carrier base is sealed on titration cell shell upper and forms lighttight cavity, and carrier base is provided with titration hole; Described stepper motor is located on support, and the output shaft of stepper motor is connected with paddle by power transmission shaft, and this paddle is suspended from titration cell stirring-head by carrier base;
Continuous microflow titration system: comprise precise injection pump, triple valve, connection tubule and buret; Described precise injection pump is connected with the common port of triple valve, an interface in two other interface of triple valve is communicated with the tubule that is connected passing in titrant, another interface is communicated with buret upper end by connecting tubule, and buret inserts in titration cell by described titration hole.
2. Automatic continuous miniflow titration system according to claim 1, is characterized in that: described titration cell shell is also provided with the path channels that can allow light pass titration cell bottom, described titration cell is colorimetric pool.
3. Automatic continuous miniflow titration system according to claim 1, is characterized in that: be also provided with measurement electrode, measurement electrode is suspended from titration cell through carrier base.
4. Automatic continuous miniflow titration system according to claim 1, is characterized in that: the internal diameter≤1mm of buret.
5. Automatic continuous miniflow titration system according to claim 1, is characterized in that: described titration cell bottom centre is recessed, described in enter discharging tube and be located at bottom centre.
6. Automatic continuous miniflow titration system according to claim 1, is characterized in that: described stirring-head is provided with the blade of four crossing distribution, and the angle of blade and horizontal plane is 30 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521127773.2U CN205246621U (en) | 2015-12-29 | 2015-12-29 | Automatic continuous miniflow system of titrating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521127773.2U CN205246621U (en) | 2015-12-29 | 2015-12-29 | Automatic continuous miniflow system of titrating |
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| Publication Number | Publication Date |
|---|---|
| CN205246621U true CN205246621U (en) | 2016-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201521127773.2U Active CN205246621U (en) | 2015-12-29 | 2015-12-29 | Automatic continuous miniflow system of titrating |
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| CN (1) | CN205246621U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105510518A (en) * | 2015-12-29 | 2016-04-20 | 江苏德林环保技术有限公司 | Automatic continuous micro-flow titration system and method |
| CN106198532A (en) * | 2016-09-05 | 2016-12-07 | 江苏德林环保技术有限公司 | The dual wavelength autocontrol method of a kind of quick photometric titration and device |
| CN107145179A (en) * | 2017-03-31 | 2017-09-08 | 华侨大学 | The high-precision titration system of heavy dose of quantitative liquid |
-
2015
- 2015-12-29 CN CN201521127773.2U patent/CN205246621U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105510518A (en) * | 2015-12-29 | 2016-04-20 | 江苏德林环保技术有限公司 | Automatic continuous micro-flow titration system and method |
| CN106198532A (en) * | 2016-09-05 | 2016-12-07 | 江苏德林环保技术有限公司 | The dual wavelength autocontrol method of a kind of quick photometric titration and device |
| CN106198532B (en) * | 2016-09-05 | 2018-09-04 | 江苏德林环保技术有限公司 | A kind of the dual wavelength autocontrol method and device of quick photometric titration |
| CN107145179A (en) * | 2017-03-31 | 2017-09-08 | 华侨大学 | The high-precision titration system of heavy dose of quantitative liquid |
| CN107145179B (en) * | 2017-03-31 | 2019-02-26 | 华侨大学 | High-precision titration system for large-dose quantitative liquids |
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