CN218629835U - Solution pH value on-line measuring system - Google Patents
Solution pH value on-line measuring system Download PDFInfo
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- CN218629835U CN218629835U CN202222782947.5U CN202222782947U CN218629835U CN 218629835 U CN218629835 U CN 218629835U CN 202222782947 U CN202222782947 U CN 202222782947U CN 218629835 U CN218629835 U CN 218629835U
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Abstract
The utility model provides a solution pH valve on-line measuring system, including the sample tank, on-line titration analysis appearance, first input pipeline, the second input pipeline, the return line, the sample tank is connected to the one end of first input pipeline, the one end of second input pipeline and return line's one end are connected to the other end, on-line titration analysis appearance is connected to the other end of second input pipeline, the sample tank is connected to the other end of return line, install sample pump and first valve in proper order along the direction from the sample tank to on-line titration analysis appearance on the first input pipeline, install the second valve on the return line. The utility model discloses can realize automatic sampling analysis, the test is accurate, and sampling analysis interval time can be accurate to the accuse, has improved the completeness and the accuracy of detected data, uses manpower sparingly, with low costs, reliable operation is stable, and the result and the washing water after solution and titrant reaction can all be gone into the sample jar in, can not exert an influence to the sample in the sample jar, need not handle the waste liquid alone simultaneously.
Description
Technical Field
The utility model belongs to the technical field of solution pH valve monitoring, specifically be a solution pH valve on-line measuring system.
Background
When the pH value of a solution needs to be detected in the fields of chemical industry and medicine, the common method is to test the pH value of the solution sample. If the dynamic measurement needs to be carried out on the solution in the process, sampling needs to be carried out at intervals, and the samples are detected. The method is low in cost and is suitable for occasions with irregular experiment requirements, such as college laboratories, research institutes and the like. However, for enterprises with long-term continuous production requirements, such as chemical or pharmaceutical enterprises, the above method has low working efficiency and high labor intensity of operators.
SUMMERY OF THE UTILITY MODEL
The above-mentioned problem to prior art exists, the utility model aims at providing a solution pH valve on-line measuring system can realize automatic sampling analysis, and the test is accurate, and sampling analysis interval time can be accurate to the accuse, has improved the completeness and the accuracy of testing data, uses manpower sparingly, with low costs, reliable operation stability, and the sampling volume is few, during solution and titrant reaction after product and the washing water can all be arranged into the sample jar, and can not exert an influence to the sample in the sample jar, need not handle the waste liquid alone simultaneously.
In order to realize the purpose, the utility model discloses the technical scheme who adopts is:
the utility model provides a solution pH value on-line measuring system, including the sample tank, online titration analysis appearance, first input pipeline, the second input pipeline, return line, the sample tank is connected to the one end of first input pipeline, the one end of second input pipeline and return line's one end are connected to the other end, online titration analysis appearance is connected to the other end of second input pipeline, the sample tank is connected to the other end of return line, install sample pump and first valve along the direction from the sample tank to online titration analysis appearance on the first input pipeline in proper order, install the second valve on the return line.
As a further improvement of the above technical solution:
the detection system further comprises a backwashing pipeline and a third valve, wherein one end of the backwashing pipeline is connected with an external cleaning water source, and the other end of the backwashing pipeline is connected with the first input pipeline.
The joint of the back flushing pipeline and the first input pipeline is positioned between the first valve and the online titrimetric analyzer, or between the first valve and the sampling pump, or between the sampling pump and the sample tank.
The on-line titrimetric analyzer is positioned above the sample tank.
The first valve, the second valve and the third valve are all solenoid valves.
The detection system further comprises a controller, and the first valve, the second valve, the third valve, the sampling pump and the online titration analyzer are electrically connected with the controller.
An analysis cup and an inner pipeline are arranged in the online titration analyzer, one end of the inner pipeline is connected with the analysis cup, the other end of the inner pipeline is connected with a second input pipeline, and a sampling valve is arranged on the inner pipeline.
The first input pipeline and/or the return pipeline and/or the second input pipeline are/is externally sleeved with a heat insulation sleeve.
The sample tank is internally provided with a filtering component, and the solution at the connecting ports of the first input pipeline and the sample tank and the connecting ports of the return pipeline and the sample tank is the solution filtered by the filtering component.
The utility model has the advantages that: can realize automatic sampling analysis, the test is accurate, and sampling analysis interval time can be accurate controls, has improved the completeness and the accuracy of testing data, uses manpower sparingly, with low costs, reliable operation is stable, and the sampling volume is few, the product and the washing water after solution and titrant reaction can all be arranged into the sample jar in, and can not exert an influence to the sample in the sample jar, need not handle the waste liquid alone simultaneously.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
The following describes in detail embodiments of the present invention with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.
For ease of description, spatially relative terms such as "over … …", "over … …", "over … …", "over", etc. may be used herein to describe the spatial positional relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
An on-line detection system for the pH value of a solution is shown in figure 1 and comprises a sample tank 1, an on-line titration analyzer 10, a first input pipeline 2, a second input pipeline 3, a sampling pump 4, a first valve 5, a return pipeline 6, a second valve 7, a back washing pipeline 8, a third valve 9 and a controller.
The sample jar 1 is connected to the one end of first input pipeline 2, and the one end of second input pipeline 3 and the one end of return line 6 are connected to the other end, and the online titration analysis appearance 10 is connected to the other end of second input pipeline 3, and sample jar 1 is connected to the other end of return line 6. Namely, the first input pipeline 2, the second input pipeline 3 and the return pipeline 6 are communicated with each other, and the joint of the three is set as a point A.
An analysis cup and an inner pipeline are arranged in the online titration analyzer 10, one end of the inner pipeline is connected with the analysis cup, and the other end of the inner pipeline is connected with the second input pipeline 3. And a valve is arranged on the inner pipeline and is set as a sampling valve. When the sampling valve is open, liquid in the second inlet line 3 can pass through the inner line into the analysis cup, and liquid in the analysis cup can also pass through the inner line into the second inlet line 3. When the sampling valve is closed, the second inlet line 3 and the analysis cup cannot communicate.
A sampling pump 4 and a first valve 5 are sequentially installed on the first input pipeline 2 along the direction from the sample tank 1 to the on-line titrimetric analyzer 10 or the point a. A second valve 7 is mounted on the return line 6.
The back-flushing line 8 is used for flushing the first inlet line 2 and/or the return line 6 and/or the second inlet line 3 and/or the solution path in the online titrimeter 10, the solution path in the online titrimeter 10 comprising the inner line and the analysis cup.
One end of the back flushing pipeline 8 is connected with an external cleaning water source, the other end of the back flushing pipeline 8 is connected with the first input pipeline 2, and the connection position of the back flushing pipeline 8 and the first input pipeline 2 can be positioned between the first valve 5 and the online titration analyzer 10, or between the first valve 5 and the sampling pump 4, or between the sampling pump 4 and the sample tank 1.
The first valve 5, the second valve 7 and the third valve 9 are all solenoid valves. The first valve 5, the second valve 7, the third valve 9, the sampling pump 4 and the online titrimetric analyzer 10 are all electrically connected to the controller.
In order to prevent and reduce the crystallization degree of the solution in the first input pipeline 2, the return pipeline 6 and the second input pipeline 3, a heat insulation sleeve is sleeved outside the first input pipeline 2 and/or the return pipeline 6 and/or the second input pipeline 3.
Preferably, the first valve 5 and the second valve 7 are normally open valves, and the third valve 9 is a normally closed valve.
In order to ensure and improve the reflux effect of the solution in the system, the on-line titrimetric analyzer 10 is positioned above the sample tank 1.
The online titration analyzer 10 adopts the potentiometric titration principle, after a sample solution is extracted into the analyzing cup, titrant is used for titration, and the concentration of ions to be measured in the solution is continuously changed along with the addition of the titrant, so that the potential of the indicating electrode is correspondingly changed. The titrant is pre-loaded in the online titration analyzer 10, and can be automatically dropped into a set amount of titrant according to the program setting. The on-line titrimeter 10 is available from commercial sources, using known technology, and will not be described in detail herein.
In this example, the content of sulfuric acid in the solution in the ammonium sulfate crystallization tank was detected, and sodium hydroxide was used as the titrant.
Be equipped with filtering component in sample jar 1, when outside solution got into sample jar 1, can pass through filtering component filters the back redeposit at sample jar 1 lower extreme. The solution entering the first inlet line 2 from the sample tank 1 is the solution filtered through the filter assembly in the sample tank 1. The solution flowing back from the return line 6 to the sample tank 1 can also be mixed directly with the solution already filtered in the sample tank 1. Namely, the solution at the connection port of the first input pipeline 2 and the sample tank 1 and the connection port of the return pipeline 6 and the sample tank 1 is the solution filtered by the filtering component.
Based on the structure, the utility model discloses a theory of operation and process do:
when the pH value analysis of the solution is not required to be carried out, the sampling pump 4, the first valve 5 and the second valve 7 are in a normally open state, the third valve 9 is in a normally closed state, at the moment, under the power provided by the sampling pump 4, the solution in the sample tank 1 is sucked into the first input pipeline 2, and the solution in the first input pipeline 2 sequentially passes through the sampling pump 4, the first valve 5 and the return pipeline 6 and finally returns to the sample tank 1. The solution circulation loop is defined as a first circulation loop. The first circulation loop is opened without analyzing the pH value of the solution, so that the solution in the pipeline is kept to circulate, and the solution crystallization in the pipeline is prevented. At this point, the solution does not enter the online titrimetric analyzer 10.
When the pH value of the solution needs to be analyzed, the method comprises the following steps:
step 1: and (6) sampling.
In this step, the sampling pump 4, the first valve 5, and the second valve 7 are kept open, and the sampling valve inside the online titrimeter 10 is opened. At this time, under the power provided by the sampling pump 4, the solution in the sample tank 1 is sucked into the first input pipeline 2, after the solution in the first input pipeline 2 sequentially passes through the sampling pump 4 and the first valve 5, a part of the solution enters the second input pipeline 3, then enters the online titrimeter 10 from the second input pipeline 3, and the rest solution enters the return pipeline 6 and then enters the sample tank 1 from the return pipeline 6.
Wherein, the sampling volume can be according to the aperture of sampling valve and the aperture of sampling pump 4, first valve 5 are nimble to be set for.
Step 2: and (5) detecting and analyzing.
In this step, the sampling by the on-line titrimeter 10 is completed. The sampling pump 4, the first valve 5, and the second valve 7 are kept open, the sampling valve inside the online titrimeter 10 is closed, and the online titrimeter 10 performs detection and analysis. At this time, under the power provided by the sampling pump 4, the solution in the sample tank 1 is sucked into the first input pipeline 2, and the solution in the first input pipeline 2 sequentially passes through the sampling pump 4, the first valve 5 and the return pipeline 6, and finally returns to the sample tank 1, that is, the first circulation loop is communicated.
And step 3: and (4) discharging the waste sample liquid.
In this step, the detection and analysis are completed. And opening a sampling valve inside the online titrimeter 10, wherein the waste liquid in the online titrimeter 10 flows into the second input pipeline 3, then flows into the return pipeline 6 from the second input pipeline 3, and finally returns to the sample tank 1.
And 4, step 4: and (5) cleaning the pipeline.
In this step, the sampling pump 4 is closed, the third valve 9 is opened, the back-flushing pipeline 8 is connected with an external cleaning water source, and water enters the first input pipeline 2, the second input pipeline 3 and the return pipeline 6 through the back-flushing pipeline 8 to flush the whole system pipeline.
It should be noted that the online titrimetric analyzer 10 samples a small amount, about 2ml, so that the reaction product of the solution and the titrant and the cleaning water can be discharged into the sample tank 1 without affecting the sample in the sample tank 1. The connection settings of the controller and the online titrimetric analyzer 10 may be implemented using existing programs according to the requirements of the online titrimetric analyzer 10.
Finally, it must be said here that: the above embodiments are only used for further detailed description of the technical solutions of the present invention, and should not be understood as limiting the scope of the present invention, and the modifications and adjustments made by those skilled in the art according to the above-mentioned contents of the present invention are all included in the scope of the present invention.
Claims (9)
1. The utility model provides a solution pH value on-line measuring system, a serial communication port, including sample tank (1), online titration analysis appearance (10), first input pipeline (2), second input pipeline (3), return line (6), sample tank (1) is connected to the one end of first input pipeline (2), the one end of second input pipeline (3) and the one end of return line (6) are connected to the other end, online titration analysis appearance (10) are connected to the other end of second input pipeline (3), sample tank (1) is connected to the other end of return line (6), install sample pump (4) and first valve (5) along following sample tank (1) in proper order to the direction of online titration analysis appearance (10) on first input pipeline (2), install second valve (7) on return line (6).
2. The detection system of claim 1, wherein: the detection system further comprises a back washing pipeline (8) and a third valve (9), wherein one end of the back washing pipeline (8) is connected with an external cleaning water source, and the other end of the back washing pipeline is connected with the first input pipeline (2).
3. The detection system of claim 2, wherein: the connection position of the back flushing pipeline (8) and the first input pipeline (2) is positioned between the first valve (5) and the online titrimetric analyzer (10), or between the first valve (5) and the sampling pump (4), or between the sampling pump (4) and the sample tank (1).
4. The detection system of claim 1, wherein: the on-line titrimetric analyzer (10) is located above the sample tank (1).
5. The detection system of claim 2, wherein: the first valve (5), the second valve (7) and the third valve (9) are all electromagnetic valves.
6. The detection system of claim 5, wherein: the detection system further comprises a controller, and the first valve (5), the second valve (7), the third valve (9), the sampling pump (4) and the online titration analyzer (10) are electrically connected with the controller.
7. The detection system according to any one of claims 1 to 6, wherein: an analysis cup and an inner pipeline are arranged in the online titration analyzer (10), one end of the inner pipeline is connected with the analysis cup, the other end of the inner pipeline is connected with the second input pipeline (3), and a sampling valve is arranged on the inner pipeline.
8. The detection system of claim 1, wherein: the first input pipeline (2) and/or the return pipeline (6) and/or the second input pipeline (3) are/is externally sleeved with a heat insulation sleeve.
9. The detection system of claim 1, wherein: be equipped with filtering component in sample tank (1), the solution of the connector of first input pipeline (2) and sample tank (1) and the connector department of return line (6) and sample tank (1) is the warp the solution after filtering component filters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222782947.5U CN218629835U (en) | 2022-10-21 | 2022-10-21 | Solution pH value on-line measuring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222782947.5U CN218629835U (en) | 2022-10-21 | 2022-10-21 | Solution pH value on-line measuring system |
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| Publication Number | Publication Date |
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| CN218629835U true CN218629835U (en) | 2023-03-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222782947.5U Active CN218629835U (en) | 2022-10-21 | 2022-10-21 | Solution pH value on-line measuring system |
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| CN (1) | CN218629835U (en) |
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- 2022-10-21 CN CN202222782947.5U patent/CN218629835U/en active Active
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