CN208766149U - Potentiometric titrimeter - Google Patents
Potentiometric titrimeter Download PDFInfo
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- CN208766149U CN208766149U CN201821188417.5U CN201821188417U CN208766149U CN 208766149 U CN208766149 U CN 208766149U CN 201821188417 U CN201821188417 U CN 201821188417U CN 208766149 U CN208766149 U CN 208766149U
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- component
- potentiometer
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Abstract
The utility model relates to and titration device field, especially potentiometric titrimeter, including a container, it is characterized by: the container is equipped with a titration chamber and a pre- drop chamber, in titration chamber and pre- drop, chamber is fixedly connected below is equipped with a magnetic stirring apparatus, a stand is equipped in the side of container, a titration outfit is equipped in stand, the titration outfit includes a pre- drop component and a titration component, pre- drop component, titration component are connected with a liquid storage device respectively, are respectively equipped with a potential test device above titration chamber and pre- drop chamber.It is reasonable in design, measure unknown sample when can not determine titration time and titrating solution dosage when, by the default substantially section for titrating the measurement that more quickly can tentatively obtain a result of the present apparatus and titration flow velocity and it is expected that titration time section, so as to accurately set titration flow, titration time is rationally controlled.
Description
Technical field
The utility model relates to and titration device field, especially potentiometric titrimeter.
Background technique
Potentiometric titration accuracy generally with higher and precision, what it is due to potentiometric titration measurement is with titrant
The variation of cell emf caused by addition, rather than the absolute value of electromotive force, even if the rare variation of the slope of electrode, also not
Influence measurement result.And its liquid junction potential and activity coefficient vary less, nearby potential break is larger for equivalent point, it is accurate to be easy
Terminal is measured, therefore constant-current titration at present is widely used when measuring terminal in an experiment.But present constant-current titration
Device also has certain limitation during utilization: constant-current titration speed is slow, causes analysis time longer, is especially surveying
Measure unknown sample when do not know can consume how many titrating solution and in order to guarantee titration accuracy be unable to pre-add titrating solution again,
Titration time can not be estimated, so that rate of titration can not accurately be set, therefore is also caused during actually titration
It has difficulties when carrying out the titration of unknown sample now with potentiometric titration.
Utility model content
The utility model one of to solve above-mentioned technical problem used by technical solution be: potentiometric titrimeter, including
One container, the container are equipped with a titration chamber and a pre- drop chamber, stir in titration chamber and the pre- drop chamber magnetic force fixedly connected below that is equipped with
Device is mixed, is equipped with a stand in the side of container, a titration outfit is equipped in stand, the titration outfit includes a pre- drop component
With a titration component, drop component, titration component are connected with a liquid storage device respectively in advance, are respectively equipped with above chamber in titration chamber and pre- drip
One potential test device.
The potential test device includes a main potentiometer and a secondary potentiometer, and main potentiometer, secondary potentiometer pass through respectively
Signal wire connects a main potential display, secondary potential display, and the main potentiometer passes through the first reference electrode, the first instruction electricity
Pole extend to titration it is intracavitary, it is described pair potentiometer by the second reference electrode, the second indicator electrode extend to it is pre- drip it is intracavitary.
The pre- drop component includes one first adjustable quantitative liquid feeder, is equipped with one and pre- drop in adjustable quantitative liquid feeder bottom
The diversion pipe that chamber matches is equipped with a flow control valve on adjustable quantitative liquid feeder.
The titration component include one second adjustable quantitative liquid feeder, the second adjustable quantitative liquid feeder bottom be equipped with one with
The secondary conduits that titration chamber matches, are equipped with a solenoid valve on the second adjustable quantitative liquid feeder.
The pre- drop bottom of chamber portion is connected by pipeline with an exhausted bath box.
Flow meters scale is equipped on diversion pipe.
A timer is equipped on flow meter.
Beneficial effect possessed by the utility model is, reasonable in design, measure unknown sample when can not determine
When titration time and titrating solution dosage, measurement more quickly tentatively can be obtained a result substantially by the default titration of the present apparatus
Section and titration flow velocity and it is expected that titration time section, so as to accurately set titration flow, rationally control titration
Time.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
In figure, 1, container；2, chamber is titrated；3, chamber is dripped in advance；4, magnetic stirring apparatus；5, stand；6, liquid storage device；7, main electricity
Position instrument；8, secondary potentiometer；9, main potential display；10, secondary potential display；11, the first reference electrode；12, the first instruction electricity
Pole；13, the second reference electrode；14, the second indicator electrode；15, the first adjustable quantitative liquid feeder；16, diversion pipe；17, flow tune
Save valve；18, the second adjustable quantitative liquid feeder；19, secondary conduits；20, solenoid valve；21, exhausted bath box；22, flow meter；
23, timer.
Specific embodiment
In order to clarify the technical characteristics of the invention, below by specific embodiment, and its attached drawing is combined, to this reality
It is described in detail with novel.
As shown in fig. 1, potentiometric titrimeter, including a container 1, the container 1 are equipped with a titration chamber 2 and a pre- drop
Chamber 3, in titration chamber 2 and pre- drop, chamber 3 is fixedly connected below is equipped with a magnetic stirring apparatus 4, a stand 5 is equipped in the side of container 1, vertical
Frame 5 is equipped with a titration outfit, and the titration outfit includes a pre- drop component and a titration component, drips component, titration component in advance
It is connected respectively with a liquid storage device 6, is respectively equipped with a potential test device above titration chamber 2 and pre- drop chamber 3；It is described in the application
The volume of pre- drop chamber 3 be less than the volume of titration chamber 2, it is pre- drip chamber 3 be intended only as its volume of sample cavity here can in setting
Think the one third or 1/5th or less can also be with of titration chamber 2, in this way can by corresponding conversion scale compared with
It is good obtain corresponding titration solution needed for titration time and titration flow, effectively realized based on formulate to unknown
The titration schedule of solution keeps magnetic stirring apparatus 4 to work during titration, thus can be to titration chamber 2 and pre- drop chamber 3
Interior solution carries out moment stirring, promote titrating solution fall into the mixing of rear entire solution with degree, so as to accurate
Obtain corresponding current potential and potential change, to be measured by main potentiometer 7, shown by main potential display 9,
Record；It can control titrating solution by drop component in advance, titration component at titration and directly flowed out simultaneously out of liquid storage device 6 as required
It flows in corresponding titration chamber 2 and pre- drop chamber 3；Main potentiometer 7 in the application, secondary potentiometer 8 and main potential display 9,
Secondary potential display 10 is the existing device of buying, and the application in production is limited with Taizhou Datang analysis instrument
The device of potentiometer, display same model on the ZDDY-2008J type automatical potentiometric titrimeter of company, naturally it is also possible to root
According to needing to select the device of different model, as long as being able to satisfy basic effect described in the application.
The potential test device includes that a main potentiometer 7 and a secondary potentiometer 8, main potentiometer 7, secondary potentiometer 8 are distinguished
Connect a main potential display 9, secondary potential display 10 by signal wire, the main potentiometer 7 by the first reference electrode 11,
First indicator electrode 12 extends in titration chamber 2, and the pair potentiometer 8 is stretched by the second reference electrode 13, the second indicator electrode 14
To pre- drop chamber 3；When prediction, titrating solution is flowed into pre- drop chamber 3, is received by the second reference electrode 13, the second indicator electrode 14
The numerical value that secondary potentiometer 8 measured and showed by secondary potential display 10 current potential of measurement is directly fed back to electric potential signal
And variation tendency, experimental implementation person is by observing whether point on secondary potential display 10 satisfactory current potential figure occurs
Variation, operator controls the first adjustable quantitative liquid feeder 15 and closes and control the closing of solenoid valve 20, timer after appearance
23 is tentative, and titration can stop at this time, and the amount and solution titration end-point of titrating solution are instilled by can generally determine after observation
General relationship between determination can select more relatively large rate of titration when setting titration flow herein, contract as far as possible
Short time, but will lead to the result and inaccurate of measurement in this way, can only be made by PRELIMINARY RESULTS rough judgement come
Substantially compartmental results out, so as to determined according to the section having determined experiment in view of the experimental period of optimization, most
Come to achieve the purpose that accurately to control titration end-point, finally obtain more accurate titrating solution dosage by controlling rate of titration eventually
With titration experiments result.
The pre- drop component includes one first adjustable quantitative liquid feeder 15, is equipped in 15 bottom of the first adjustable quantitative liquid feeder
One diversion pipe 16 matched with pre- drop chamber 3, is equipped with a flow control valve 17 on the first adjustable quantitative liquid feeder 15；Pass through
One adjustable quantitative liquid feeder 15 simultaneously can control what the liquid in liquid storage device 6 was flowed into pre- drop chamber 3 in conjunction with flow control valve 17
Speed and flow.
The titration component includes one second adjustable quantitative liquid feeder 18, is equipped in 18 bottom of the second adjustable quantitative liquid feeder
One secondary conduits 19 matched with titration chamber 2, a solenoid valve 20 is equipped on the second adjustable quantitative liquid feeder 18, passes through two
Adjustable quantitative liquid feeder simultaneously can control the speed that the liquid in liquid storage device 6 is flowed into titration chamber 2 in conjunction with solenoid valve 20
And flow.
Pre- 3 bottom of drop chamber is connected by pipeline with an exhausted bath box 21, by opening pipeline after the completion of estimating experiment
On valve reacted liquid can be directly discharged in exhausted bath box 21 convenient for collect.
Flow meters scale 22 is equipped on diversion pipe 16, flow meter 22 can calculate the total of the titrating solution of outflow
Amount, so that the volume of the sample liquid in pre- drop chamber 3 be combined to be compared with the titrating solution volume dripped in advance, then analogy thinking is to be checked
The titration solution of survey titer required in the state of existing volume, to be closed under the case where guaranteeing measurement result precision
The control titration flow velocity and titration time of reason.
It is equipped with a timer 23 on flow meter 22, can be recorded for the time measured in advance.
When prediction, titrating solution is flowed into pre- drop chamber 3, receives electricity by the second reference electrode 13, the second indicator electrode 14
Position signal directly feed back to secondary potentiometer 8 measure and by the numerical value of the current potential of the secondary display of potential display 10 measurement and
Variation tendency, experimental implementation person is by observing whether point on secondary potential display 10 satisfactory potential diagram deformation occurs
Change, operator controls the first adjustable quantitative liquid feeder 15 and closes and control the closing of solenoid valve 20, timer 23 after appearance
Tentative, titration can stop at this time, true by the amount and solution titration end-point that can generally determine instillation titrating solution after observation
General relationship between fixed can select more relatively large rate of titration when setting titration flow herein, shorten as far as possible
Time, but will lead to the result and inaccurate of measurement in this way, rough judgement can only be made by PRELIMINARY RESULTS to obtain
Substantially compartmental results, the time titrated in advance is very short, therefore will not cause large effect to the whole time, but can be very
Experiment is carried out well and estimates rationally control titration, guarantees the accuracy of titration results, so as to the area having determined according to this
Between determine experiment in view of the experimental period of optimization, finally come to reach accurate control titration end-point by controlling rate of titration
Purpose, finally obtain more accurate titrating solution dosage and titration experiments result；It is adjustable to control first according to prediction result
Quantitative charger 15 works, and regulates solenoid valve 20, is finally titrated according to the rate of titration derived, finally may be used
To obtain more accurate titrimetry result within reasonable time.It is reasonable in design, measure unknown sample when
It, can more quick survey of tentatively obtaining a result by the default titration of the present apparatus when can not determine titration time and titrating solution dosage
Fixed substantially section and titration flow velocity and it is expected that titration time section, so as to accurately set titration flow, rationally
Control titration time.
Above-mentioned specific embodiment cannot function as the limitation to scope of protection of the utility model, for the skill of the art
For art personnel, any alternate modification or transformation made to the utility model embodiment all fall within the guarantor of the utility model
It protects in range.
Place is not described in detail for the utility model, is the well-known technique of those skilled in the art of the present technique.
Claims (7)
1. potentiometric titrimeter, including a container, it is characterised in that: the container is equipped with a titration chamber and a pre- drop chamber,
Chamber is fixedly connected below is equipped with a magnetic stirring apparatus for titration chamber and pre- drop, is equipped with a stand in the side of container, one is equipped in stand
Titration outfit, the titration outfit include a pre- drop component and a titration component, drip in advance component, titration component respectively with a liquid storage
Device is connected, and is respectively equipped with a potential test device above titration chamber and pre- drop chamber.
2. potentiometric titrimeter according to claim 1, it is characterised in that: the potential test device includes a main current potential
Instrument and a secondary potentiometer, main potentiometer, secondary potentiometer connect a main potential display by signal wire respectively, secondary current potential is shown
Device, the main potentiometer by the first reference electrode, the first indicator electrode extend to titration it is intracavitary, it is described pair potentiometer pass through second
It is intracavitary that reference electrode, the second indicator electrode extend to pre- drop.
3. potentiometric titrimeter according to claim 2, it is characterised in that: the pre- drop component can be set up including one first
Charger is measured, a diversion pipe matched with pre- drop chamber is equipped in the first adjustable quantitative liquid feeder bottom, in the first adjustable quantitative
Charger is equipped with a flow control valve.
4. potentiometric titrimeter according to claim 3, it is characterised in that: the titration component can be set up including one second
Charger is measured, the secondary conduits matched with titration chamber are equipped in the second adjustable quantitative liquid feeder bottom, in the second adjustable quantitative
Charger is equipped with a solenoid valve.
5. potentiometric titrimeter according to claim 4, it is characterised in that: the pre- drop bottom of chamber portion is useless by pipeline and one
Liquid case is connected.
6. potentiometric titrimeter according to claim 5, it is characterised in that: be equipped with flow meters scale on diversion pipe.
7. potentiometric titrimeter according to claim 6, it is characterised in that: be equipped with a timer on flow meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821188417.5U CN208766149U (en) | 2018-07-26 | 2018-07-26 | Potentiometric titrimeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821188417.5U CN208766149U (en) | 2018-07-26 | 2018-07-26 | Potentiometric titrimeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208766149U true CN208766149U (en) | 2019-04-19 |
Family
ID=66129302
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821188417.5U Active CN208766149U (en) | 2018-07-26 | 2018-07-26 | Potentiometric titrimeter |
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| CN (1) | CN208766149U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111007197A (en) * | 2019-12-24 | 2020-04-14 | 中检科健(天津)检验检测有限责任公司 | Method for rapidly determining thioglycollic acid content |
| WO2021007876A1 (en) * | 2019-07-15 | 2021-01-21 | 王飞 | Spectrum-potential-temperature multi-dimensional titration analyzer and use method thereof |
| CN113219125A (en) * | 2021-03-10 | 2021-08-06 | 安徽中医药高等专科学校 | Titration end point display |
-
2018
- 2018-07-26 CN CN201821188417.5U patent/CN208766149U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021007876A1 (en) * | 2019-07-15 | 2021-01-21 | 王飞 | Spectrum-potential-temperature multi-dimensional titration analyzer and use method thereof |
| CN111007197A (en) * | 2019-12-24 | 2020-04-14 | 中检科健(天津)检验检测有限责任公司 | Method for rapidly determining thioglycollic acid content |
| CN113219125A (en) * | 2021-03-10 | 2021-08-06 | 安徽中医药高等专科学校 | Titration end point display |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 272000 Caohe Town Industrial Park, Yanzhou District, Jining City, Shandong Province Patentee after: Shandong Haiyu Biotechnology Co.,Ltd. Address before: 272000 Caohe Town Industrial Park, Yanzhou District, Jining City, Shandong Province Patentee before: SHANDONG HAIYU BIOLOGICAL Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |