CN207650174U - Permanganate index automatic titration system - Google Patents
Permanganate index automatic titration system Download PDFInfo
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- CN207650174U CN207650174U CN201721875505.8U CN201721875505U CN207650174U CN 207650174 U CN207650174 U CN 207650174U CN 201721875505 U CN201721875505 U CN 201721875505U CN 207650174 U CN207650174 U CN 207650174U
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- Prior art keywords
- pump machanism
- injection pump
- control module
- syringe
- piston
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Abstract
The utility model discloses a kind of permanganate index automatic Titration systems, including：Host computer；Control module, control module is used to receive the control instruction of host computer, and pump machanism is injected to the first injection pump machanism and second for sending control signal, it is additionally operable to receive and handle the information of voltage that ORP electrodes are tested, is additionally operable to judge titration end-point and uploads titration completion signal to upper seat in the plane；First injection pump machanism, the first injection pump machanism are used to receive the control signal transmitted by control module and add sodium oxalate to sample bottle；Second injection pump machanism, the second injection pump machanism are used to receive the control signal transmitted by control module and potassium permanganate are added dropwise to sample bottle；ORP electrodes, ORP electrodes are for the information of voltage in test sample bottle and are transferred to control module.The utility model is a kind of dependence for both having reduced and having judged human subjective titration end-point, is not also improved the permanganate index automatic Titration system of test data accuracy by water sample patterns affect.
Description
Technical field
The utility model is related to the measurement fields of permanganate index in water, are provided in particular in a kind of both reduced to manually leading
The dependence for judging titration end-point is seen, is not also improved the permanganate index of test data accuracy certainly by water sample patterns affect
Dynamic titration system.
Background technology
Permanganate index refers under certain condition, with potassium permanganate (KMnO4) it is oxidant, disappeared when handling water sample
The amount of the oxidant of consumption.It is expressed as the mg/litre (O of oxygen2, mg/l).Permanganate index at the specified experimental conditions, can only
Partial oxidation Organic substance in water is not the scale for reflecting total organic content in water body.International Organization for standardization (ISO) suggests high
Potassium manganate method is only limitted to measure surface water, drinking water and source water, is not suitable for industrial wastewater.
Permanganate index test principle be：The potassium permanganate and sulfuric acid of known quantity are added in sample, in boiling water bath
Resolution 30 minutes, potassium permanganate by sample certain organic matters and inorganic matter reducing substances aoxidize, be added after reaction excessive
The remaining potassium permanganate of oxalic acid sodium reduction, then with the excessive sodium oxalate of potassium permanganate index solution residual titration, be obtained by calculation
Permanganate index in sample.
At present during laboratory test permanganate index, operating personnel judge to drip according to the variation of color sample
Determine terminal, the experiment qualification of operating personnel is required high.If having abnormal color after water sample muddiness or water sample resolution, even if
The experimenter of skilled operation, also can be impacted to the judgement of titration end-point, easily test result is caused to have deviation.Therefore there is an urgent need for
The automatic Titration principle of research energy accurate judgement permanganate index titration end-point, is applied to permanganate index automatic Titration system
System.
Therefore, there is an urgent need for a kind of dependences for both having reduced human subjective and having judged titration end-point, not by water sample patterns affect, improve
The permanganate index automatic Titration system of test data accuracy.
Utility model content
The purpose of this utility model is to provide a kind of dependence for both having reduced human subjective and having judged titration end-point, not by water sample
Patterns affect improves the permanganate index automatic Titration system of test data accuracy.
To achieve the goals above, technical solution provided by the utility model is：It is automatic to provide a kind of permanganate index
Titration system, including：
Host computer；
Control module, the control module are used to receive the control instruction of the host computer, and for sending control signal
To the first injection pump machanism and the second injection pump machanism, it is additionally operable to the information of voltage received and processing ORP electrodes are tested, sentences
Disconnected titration end-point, and upload titration and complete signal to the host computer；
First injection pump machanism, the first injection pump machanism are used to receive the control signal transmitted by the control module
And add sodium oxalate to sample bottle；
Second injection pump machanism, the second injection pump machanism are used to receive the control signal transmitted by the control module
And potassium permanganate is added dropwise to the sample bottle；
ORP electrodes, the ORP electrodes are for the information of voltage in test sample bottle and are transferred to the control module.
The structure of the second injection pump machanism is identical as the first injection structure of pump machanism, wherein first note
Penetrating pump machanism includes：Shell, piston driving motor, valve motor, piston load push-pull, syringe, triple valve, the piston driving electricity
Machine and valve motor are respectively arranged at the lower part and top of the shell, the piston driving motor and piston load push-pull one end
Connection, the syringe and triple valve are set to the outside of the shell, the piston load push-pull other end and the syringe
Piston push rod connection, the syringe be connected to one end of the triple valve, second end and the sodium oxalate company of the triple valve
Logical, the third end of the triple valve is connected to sample bottle, and the syringe extracts sodium oxalate and is added drop-wise in sample bottle.
One end that the piston load push-pull is connect with the piston push rod of the syringe is equipped with connecting hole, and the connecting hole is also
Configured with lock-screw.
The triple valve is tightly fixed on by bolt lock on the side wall of the shell.
Be additionally provided with drive circuit board in the shell, the drive circuit board for drive the piston driving motor and
Valve motor.
Compared with prior art, the utility model has the beneficial effects that：
Rule of thumb formula V2+ (V1-V2) × f calculates titration and terminates ORP value, and V1, V2 are real-time voltage value, are not required to grow
Time acquires, and simplifies the process for determining that titration terminates ORP value, and dynamic control titration end-point substantially increases terminal point determining
Flexibility.
Correction coefficient is variable, is not a fixed value, the adjusted correction of ORP electrodes of different manufacturers, different model
After coefficient, you can adapt to the titration system, the applicable electrode of the titration system is not limited to certain a special electrodes.
It is not required to calibrate electrode after replacing ORP electrodes, correction coefficient need to be only adjusted according to titration situation, i.e.,
It can guarantee titration end-point accurate judgement.
To occurring the water sample of abnormal color after turbid water sample and resolution, endpoint method provided by the utility model can be accurate
Really identification titration end-point, is not influenced by sample state.
By description below and in conjunction with attached drawing, the utility model will become more fully apparent, these attached drawings are for explaining this
The embodiment of utility model.
Description of the drawings
Fig. 1 is the schematic diagram of permanganate index automatic Titration system.
Fig. 2 is expressed as the schematic diagram of the injection pump machanism of the utility model permanganate index automatic Titration system.
Specific implementation mode
The embodiments of the present invention are described referring now to the drawings, similar element numbers represent similar member in attached drawing
Part.As described above, as illustrated in fig. 1 and 2, the permanganate index automatic Titration system that the utility model embodiment provides, including：
Host computer 1；
Control module 2, the control module 2 are used to receive the control instruction of the host computer 1, and for sending control letter
Number pump machanism 4 is injected to the first injection pump machanism 3 and second, is additionally operable to receive and handle the voltage that ORP electrodes 5 are tested
Information judges titration end-point, and uploads titration and complete signal to the host computer 1；
First injection pump machanism 3, the first injection pump machanism 3 are used to receive the control transmitted by the control module 2
Signal and to sample bottle 6 add sodium oxalate 7；
Second injection pump machanism 4, the second injection pump machanism 4 are used to receive the control transmitted by the control module 2
Signal and to the sample bottle 6 be added dropwise potassium permanganate 8；
ORP electrodes 5, the ORP electrodes 5 are for the information of voltage in test sample bottle 6 and are transferred to the control module
2。
In embodiment as shown in Figure 2, the structure of the second injection pump machanism 4 injects pump machanism 3 with described first
Structure is identical, wherein the first injection pump machanism 3 includes：Shell 31, piston driving motor 32, valve motor 33, piston push-and-pull
Device 34, syringe 35, triple valve 36, the piston driving motor 32 and valve motor 33 are respectively arranged at the lower part of the shell 31
And top, the piston driving motor 32 are connect with described 34 one end of piston load push-pull, the syringe 35 and triple valve 36 are equal
Set on the outside of the shell 31,34 other end of piston load push-pull is connect with the piston push rod of the syringe 35, described
Syringe 35 is connected to one end of the triple valve 36, and the second end of the triple valve 36 is connected to sodium oxalate 7, the triple valve
36 third end is connected to sample bottle 6, and the syringe 35 extracts sodium oxalate 7 and is added drop-wise in sample bottle 6.
It should be noted that the structure phase of the structure and the first injection pump machanism due to the second injection pump machanism
Together, and in the second injection pump machanism, one end of triple valve is connected to syringe, unlike the first injection pump machanism, second
End is connected to potassium permanganate, and third end is connected to sample bottle, and syringe extracts potassium permanganate and is added drop-wise in sample bottle.
In embodiment as shown in Figure 2, the piston load push-pull 34 connect with the piston push rod of the syringe 35 one
End is equipped with connecting hole, and the connecting hole is also configured with lock-screw 37.
In embodiment as shown in Figure 2, the triple valve 36 is tightly fixed on the side wall of the shell 31 by bolt lock
On.
In embodiment as shown in Figure 2, drive circuit board 38, the drive circuit board 38 are additionally provided in the shell 31
For driving the piston driving motor 32 and valve motor 33.
It should be noted that the first injection pump machanism adds how many sodium oxalate every time, it is to be controlled by control module
, specific amount is well known to those skilled in the art and has standard that can look into, and is referred to relevant standard and is operated,
It repeats no more in the present invention.
The first syringe pump and the second syringe pump are introduced, the utility model uses two syringe pumps, and the first syringe pump is used
In addition sodium oxalate solution, the second syringe pump is for being added dropwise liquor potassic permanganate.Each syringe pump pump is all connected with there are two valve position,
There are one valve positions to connect reagent bottle for wherein the first syringe pump and the second syringe pump, i.e., as shown in Figure 1, two pumps are separately connected grass
Another valve position of acid sodium solution and liquor potassic permanganate, two syringe pumps connects sample bottle.
In addition, the particular technique index of syringe pump is as follows in the present embodiment：
1, liquid measure accuracy：Error≤1% (when rated travel)；
2, liquid measure accuracy：Repeatability error≤0.5% (when rated travel)；
3, rated travel (control step number)：60mm (6000 step)；
4, linear velocity range：0.05mm/s-50mm/s；
5, rated travel run time range：1.2s-1200s；
6, resolution ratio is controlled：0.01mm (1 step)；
7, drive mechanism：Ball-screw-transmission；
8, piston maximum driving force：≥60N；
9, piston secondary drive power：≥34N；
10, using specification of syringe：50 μ L, 100 μ L, 250 μ L, 500 μ L, 1mL, 2.5mL, 5mL, 10mL, 25mL (this reality
10mL syringes are used with new embodiment)；
11, valve-type：Standard configuration：3 mouthfuls of 120 ° of valves may customize：4 mouthfuls of 90 ° of valves, 90 ° of valves of T-type, 90 ° of distributing valves；
12, valve replaces the time：≤ 280ms (adjacent between two mouthfuls)；
13, fluid path material：Borosilicate glass, polytetrafluoroethylene (PTFE), polytrifluorochloroethylene；
14, fluid path maximum pressure-bearing reference value：0.68Mpa；
15, pipe interface：1/4 " -28 internal thread interface；
16, syringe interface：1/4 " -28 internal thread interface；
17, signal inputs：2 road Transistor-Transistor Logic level signal inputs (driving current ＞ 16mA), after controlling static pause instruction
Restarting；
18, signal exports：3 road OC gate signals outputs, are used to indicate working condition；
19, communication interface：RS485/RS232 can be arranged；
20, traffic rate：9600bps/38400bps can be arranged；
21, device parameter is arranged：6 DIP toggle switch (communication interface, communication speed etc.)；
22, appearance and size (length × width × height)：114×65×254(mm)；
23, it is applicable in power supply：DC 24V/1.5A；
24, operating ambient temperature：15 DEG C -40 DEG C (mainly the temperature characterisitic of polytetrafluoroethylene material is determined in by syringe
It is fixed)；
25, working environment relative humidity：＜ 80%；
26, weight：2.15kg.
ORP electrodes are introduced, the height of ORP electrodes need to be adjusted according to liquid level in sample bottle, ensure platinum
Ring is soaked in solution.ORP electrodes should be soaked in when not in use in 3.3M KCl solution.ORP standards can be used molten when first used
Liquid is corrected electrode.
ORP electrodes particular technique parameter disclosed in the utility model embodiment is as follows：
1, ORP testing ranges：±5000mV；
2 Applicable temperature ranges：0-100℃；
The pressure resistance of 3 electrodes：It is up to 50PSI；
4, effective measurement region of electrode：Platinum ring (99.99%), the 0.25 " L of O.D. × 0.1 "；
5, reference system：The bis- salt bridge designs of Ag/AgCl；
6, with reference to filling liquid：3.3M (KCl) not refilling type (inner presseds)；
7, liquid connects material：Glass, platinum and ceramics.
It should be noted that syringe pump, syringe, triple valve, ORP electrodes etc. disclosed in the utility model embodiment
The concrete model or technical parameter of spare and accessory parts are all a kind of combinations in numerous embodiments, can not limit this reality with this
With novel scope of the claims, the spare and accessory parts of other models can also be selected to carry out group as needed in practical application
It closes, still falls within the scope of the utility model.
Claims (5)
1. a kind of permanganate index automatic Titration system, which is characterized in that including：
Host computer；
Control module, the control module are used to receive the control instruction of the host computer, and for sending control signal to the
One injection pump machanism and the second injection pump machanism are additionally operable to receive and handle information of voltage, the judgement drop that ORP electrodes are tested
Determine terminal, and uploads titration and complete signal to the host computer；
First injection pump machanism, the first injection pump machanism be used to receive control signal transmitted by the control module and to
Sample bottle adds sodium oxalate；
Second injection pump machanism, the second injection pump machanism be used to receive control signal transmitted by the control module and to
Potassium permanganate is added dropwise in the sample bottle；
ORP electrodes, the ORP electrodes are for the information of voltage in test sample bottle and are transferred to the control module.
2. permanganate index automatic Titration system as described in claim 1, which is characterized in that the second injection pump machanism
Structure with it is described first injection the structure of pump machanism it is identical, wherein it is described first injection pump machanism include：Shell, piston driving
Motor, valve motor, piston load push-pull, syringe, triple valve, the piston driving motor and valve motor are respectively arranged at the shell
The lower part and top of body, the piston driving motor are connect with piston load push-pull one end, and the syringe and triple valve are equal
Set on the outside of the shell, the piston load push-pull other end is connect with the piston push rod of the syringe, the syringe
It is connected to one end of the triple valve, the second end of the triple valve is connected to sodium oxalate, third end and the examination of the triple valve
Sample bottle is connected to, and the syringe extracts sodium oxalate and is added drop-wise in sample bottle.
3. permanganate index automatic Titration system as claimed in claim 2, which is characterized in that the piston load push-pull and institute
The one end for stating the piston push rod connection of syringe is equipped with connecting hole, and the connecting hole is also configured with lock-screw.
4. permanganate index automatic Titration system as claimed in claim 2, which is characterized in that the triple valve passes through bolt
It is locked on the side wall of the shell.
5. permanganate index automatic Titration system as claimed in claim 2, which is characterized in that be additionally provided in the shell
Drive circuit board, the drive circuit board is for driving the piston driving motor and valve motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721875505.8U CN207650174U (en) | 2017-12-27 | 2017-12-27 | Permanganate index automatic titration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721875505.8U CN207650174U (en) | 2017-12-27 | 2017-12-27 | Permanganate index automatic titration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207650174U true CN207650174U (en) | 2018-07-24 |
Family
ID=62876776
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721875505.8U Expired - Fee Related CN207650174U (en) | 2017-12-27 | 2017-12-27 | Permanganate index automatic titration system |
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| Country | Link |
|---|---|
| CN (1) | CN207650174U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107894489A (en) * | 2017-12-27 | 2018-04-10 | 华测检测认证集团股份有限公司 | permanganate index automatic titration system |
| CN112697959A (en) * | 2020-12-25 | 2021-04-23 | 北京金醍环境技术有限公司 | High-precision quantitative titration method and device applied to water quality online monitoring equipment |
-
2017
- 2017-12-27 CN CN201721875505.8U patent/CN207650174U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107894489A (en) * | 2017-12-27 | 2018-04-10 | 华测检测认证集团股份有限公司 | permanganate index automatic titration system |
| CN112697959A (en) * | 2020-12-25 | 2021-04-23 | 北京金醍环境技术有限公司 | High-precision quantitative titration method and device applied to water quality online monitoring equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190517 Address after: 210038 Floor 14, 15 and 17 of Building B1, Huizhi Science Park, Hengtai Road, Nanjing Economic and Technological Development Zone, Jiangsu Province Patentee after: Jiangsu Huaqu Standard Testing and Certification Technology Co., Ltd. Address before: 518101 C, Hongwei Industrial Park, 70 District, Baoan District, Shenzhen, Guangdong. Patentee before: CENTRE TESTING INTERNATIONAL GROUP CO., LTD. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180724 Termination date: 20201227 |
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| CF01 | Termination of patent right due to non-payment of annual fee |