CN217786983U - Automatic detection device suitable for low concentration phosphate in seawater - Google Patents
Automatic detection device suitable for low concentration phosphate in seawater Download PDFInfo
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- CN217786983U CN217786983U CN202221528963.5U CN202221528963U CN217786983U CN 217786983 U CN217786983 U CN 217786983U CN 202221528963 U CN202221528963 U CN 202221528963U CN 217786983 U CN217786983 U CN 217786983U
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Abstract
The utility model relates to a water quality monitoring field discloses an automatic checkout device suitable for low concentration phosphate in sea water, including defeated material pipeline and with defeated material pipeline respectively be connected feed line, heater, peristaltic pump and electrode bath. The feeding pipeline is connected with a plurality of liquid inlet pipes, the feeding pipeline is respectively communicated with the heater, the peristaltic pump and the electrode pool through the material conveying pipeline, and the feeding pipeline, the material conveying pipeline, the heater and the peristaltic pump form a circulation loop. The two ends of the electrode pool are provided with a liquid inlet pipe and a liquid outlet pipe, and two electrode bars are arranged in the electrode pool. The utility model discloses combine potentiometric detection method and autoanalyzer technique, both satisfied the autoanalysis of low concentration phosphate, and can realize the normal position monitoring of sea water.
Description
Technical Field
The utility model relates to the field of water quality monitoring, in particular to an automatic detection device suitable for low-concentration phosphate in seawater.
Background
The detection method of phosphate in the existing automatic analyzer is basically a molybdenum blue photometric colorimetry or a potentiometric detection method. The lower limit of the molybdenum blue photometric colorimetry is 0.01mg/L, the determination range is 0.04-1.00 mg/L, the molybdenum blue photometric colorimetry is easily interfered by impurities in a water sample, and the chromaticity and the pH value of the water sample also influence the measurement result. While the potentiometric method can detect phosphate with lower concentration, the dissolved oxygen and pressure in water have great influence on the electrode measurement. When the index of the phosphate in the seawater needs to be detected, the concentration of the index of the phosphate in the seawater is low, and impurities in the seawater are more, so that the measurement difficulty is increased, and the two existing detection methods of the phosphate cannot accurately measure the index of the phosphate in the seawater.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an automatic checkout device suitable for low concentration phosphate in sea water combines potentiometric method and autoanalyzer technique, has both satisfied the autoanalysis of low concentration phosphate, and can realize the normal position monitoring of sea water.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model discloses an automatic checkout device suitable for low concentration phosphate in sea water, it is including defeated material pipeline and with feeding pipeline, heater, peristaltic pump and the electrode bath that defeated material pipeline is connected respectively. The feeding pipeline is connected with a plurality of liquid inlet pipes, the feeding pipeline is respectively communicated with the heater, the peristaltic pump and the electrode pool through a material conveying pipeline, and the feeding pipeline, the material conveying pipeline, the heater and the peristaltic pump form a circulation loop; and a liquid inlet pipe and a liquid discharge pipe are arranged at two ends of the electrode pool, and two electrode bars are arranged in the electrode pool.
Furthermore, the feeding pipeline and the material conveying pipeline comprise a plurality of two-position three-way valves, and each two-position three-way valve comprises a normally closed end, a public end and a normally open end.
Further, the feed line comprises two-position three-way valves Q0, Q1, Q2, Q5, Q6. The material conveying pipeline comprises three-way valves Q3, Q4, Q7 and Q8.
Wherein the normally open end of Q0 is connected with the pure water pipe H, the normally closed end is connected with the first liquid discharge pipe W1, and the public end is connected with the normally open end of Q1; the normally closed end of the Q1 is connected with the sample tube S, and the common end of the Q1 is connected with the normally open end of the Q2; the normally closed end of Q2 is connected with the standard liquid pipe C, and the common end is connected with the normally closed end of Q4; the common end of the Q4 is connected with the normally open end of the Q5; the normally closed end of Q5 is connected with the R1 medicament tube, and the common end of the Q5 is connected with the normally open end of Q6; the normally closed end of the Q6 is connected with the R2 medicament tube, and the common end of the Q6 is connected with one end of the peristaltic pump; the other end of the peristaltic pump is connected with the common end of the Q7; the normally closed end of the Q7 is connected with the liquid inlet of the electrode pool, the normally open end of the Q7 is connected with one end of the heater, and the other end of the heater is connected with the common end of the Q3; the normally closed end of Q3 is connected to waste TW and the normally open end is connected to the normally open end of Q4, so that Q3, Q4, Q5, Q6, peristaltic pump, Q7, and heater form a circulation loop. The common end of the Q8 is connected with the second liquid discharge pipe W2, and the normally closed end or/and the normally open end are/is connected with the liquid discharge pipe of the electrode pool for discharging the liquid in the electrode pool.
Furthermore, the two electrode rods in the electrode pool are respectively a phosphate measuring electrode and a pH electrode.
Further, the liquid discharge pipe on the electrode pool comprises a long liquid discharge pipe and a short liquid discharge pipe, the long liquid discharge pipe is connected with the normally open end of the two-position three-way valve Q8, and the short liquid discharge pipe is connected with the normally closed end of the two-position three-way valve Q8. The short liquid discharge pipe is used for discharging redundant liquid in the electrode pool, and the long liquid discharge pipe is used for emptying the detected liquid in the electrode pool.
Furthermore, the electrode pool is a tubular container, the upper end of the electrode pool is provided with a cap for sealing the container, and the cap is provided with a connecting hole for the electrode rod and the liquid discharge pipe to pass through.
Further, the orifices of the first drain pipe W1 and the second drain pipe W2 are located above the water surface. Since the first drain pipe W1 and the second drain pipe W2 both drain waste liquid and also intake air, they cannot be submerged in liquid.
The utility model discloses an useful part is:
1. the utility model discloses combine together potentiometric method and autoanalyzer technique. Before the detection liquid is pumped into the electrode cell, the sample and the medicament can be mixed in a circulating flow mode in a water path, the consumption of dissolved oxygen is realized through heating of a heater, interference factors influencing electrode measurement are eliminated, and the detection precision is improved. Because the mixing is completed in the water channel and then the electrode pool is driven, the consumption of the sample and the medicament is less, and the liquid in the electrode pool is discharged and then cleaned after the measurement is completed, so that the consumption of pure water and the generation of waste liquid can be reduced.
2. The utility model discloses a pH electrode is in addition to the phosphate measuring electrode of measuring phosphate in the electrode pond, can realize the pH in the accurate adjustment electrode pond, improves and detects the precision.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Description of the main component symbols:
1. a feed line;
2. a material conveying pipeline;
3. a heater;
4. a peristaltic pump;
5. an electrode pool 51, a long liquid discharge pipe 52, a short liquid discharge pipe 53, a cover cap 54, a liquid inlet pipe 55, a phosphate measuring electrode 56 and a pH electrode.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the present invention is further described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the utility model discloses an automatic detection device suitable for low concentration phosphate in seawater, which comprises a material conveying pipeline 2, and a feeding pipeline 1, a heater 3, a peristaltic pump 4 and an electrode pool 5 which are respectively connected with the material conveying pipeline 2. The feed line 1 is connected with a plurality of liquid inlet pipes 54, and the liquid inlet pipe 54 in this embodiment includes: pure water pipe H, sample pipe S, standard liquid pipe C, R1 medicament pipe and R2 medicament pipe. The feeding pipeline 1 is respectively communicated with the heater 3, the peristaltic pump 4 and the electrode pool 5 through the material conveying pipeline 2, and the feeding pipeline 1, the material conveying pipeline 2, the heater 3 and the peristaltic pump 4 form a circulation loop. The two ends of the electrode pool 5 are provided with a liquid inlet pipe 54 and a liquid outlet pipe, and the electrode pool 5 is internally provided with two electrode bars which are respectively a phosphate measuring electrode 55 and a pH electrode 56. The pH electrode 56 can realize accurate adjustment of the pH in the electrode cell 5, and improve the detection accuracy.
Specifically, feeding pipeline 1 and defeated material pipeline 2 include a plurality of two three-way valve, and two three-way valves include the end that closes normally, public end and open end normally. The feed line 1 includes two three-way valves Q0, Q1, Q2, Q5, Q6. The material conveying pipeline 2 comprises three-way valves Q3, Q4, Q7 and Q8.
Wherein the normally open end of Q0 is connected with the pure water pipe H, the normally closed end is connected with the first liquid discharge pipe W1, and the public end is connected with the normally open end of Q1.
The normally closed end of Q1 is connected with the sample tube S, and the common end is connected with the normally open end of Q2.
The normally closed end of Q2 is connected to the standard liquid pipe C, and the common end is connected to the normally closed end of Q4.
The common terminal of Q4 is connected to the normally open terminal of Q5.
The normally closed end of Q5 is connected with the R1 medicament tube, and the common end is connected with the normally open end of Q6.
The normally closed end of Q6 is connected with the R2 medicament tube, and the common end is connected with one end of the peristaltic pump 4.
The other end of peristaltic pump 4 is connected to the common terminal of Q7.
The normally closed end of the Q7 is connected with the liquid inlet of the electrode pool 5, the normally open end of the Q7 is connected with one end of the heater 3, and the other end of the heater 3 is connected with the public end of the Q3.
The normally closed end of Q3 is connected to the waste liquid pipe TW, and the normally open end is connected to the normally open end of Q4, so that Q3, Q4, Q5, Q6, the peristaltic pump 4, Q7, and the heater 3 form a circulation loop.
Q8 is connected at a common end thereof to a second drain pipe W2, and at a normally closed end or/and a normally open end thereof to the drain pipe of the electrode well 5, for draining the liquid in the electrode well 5.
Principle of operation
The sample after being extracted and processed by peristaltic pump 4 enters the waterway through sample tube S, flows to the Q1 common end from the Q1 common end, flows to the Q2 common end from the Q2 common end, the Q4 common end flows to the Q5 common end, the Q5 common end flows to the Q6 common end, the Q6 common end flows to the Q7 common end through peristaltic pump 4, then flows through the heater 3 by the Q7 common end and flows to the Q3 common end, finally, the sample is discharged through TW, and the whole sampling process is completed. In the mixing and heating process, the two-position three-way valve of the feeding pipeline 1 and the material conveying pipeline 2 can be closed, only the peristaltic pump 4 is opened, and the circular flow of the sample in the whole flow path in the water path can be completed, so that the sample can pass through the heater 3, the heater 3 can be used for heating to consume a part of dissolved oxygen, the same flow path operates to extract the medicament R1 to enter the flow path, and the mixing is uniform. Dissolved oxygen in the pipeline is eliminated, then air is pumped into the flow path through the first liquid discharge pipe W1, flows to the Q7 normally closed end when flowing through the peristaltic pump 4 at the Q7 common end, the Q7 normally closed end flows to the electrode pool 5, and redundant samples can flow out through the short liquid discharge pipe 52 in the electrode pool 5 and are discharged through the second liquid discharge pipe W2 flowing to the Q8 common end from the Q8 normally closed end. The pH in the electrode cell 5 is measured by the pH electrode 56, the pH of the electrode cell 5 is adjusted by the agent R2, and the measurement process of phosphate is completed in the electrode cell 5. The liquid in the electrode cell 5 is discharged from the second drain pipe W2 through the long drain pipe 51 in the electrode cell 5, pure water is drawn through the pure water pipe H, and the water path pipe and the electrode cell 5 are cleaned as described above. The whole measuring process is completed.
The consumption of the dissolved oxygen can eliminate interference factors influencing electrode measurement and increase the detection precision. Because the mixing is completed in the water path and then the sample and the medicament are pumped into the electrode pool 5, the consumption of the sample and the medicament is less, and the liquid in the electrode pool 5 is discharged and then cleaned after the measurement is completed, so that the consumption of pure water and the generation of waste liquid can be reduced.
The liquid discharge pipes on the electrode pool 5 comprise a long liquid discharge pipe 51 and a short liquid discharge pipe 52, the long liquid discharge pipe 51 is connected with the normally open end of the two-position three-way valve Q8, and the short liquid discharge pipe 52 is connected with the normally closed end of the Q8. The short drain pipe 52 is used for draining excess liquid in the electrode well 5, and the long drain pipe 51 is used for draining the detected liquid in the electrode well 5.
Wherein, the electrode pool 5 is a tubular container, the upper end of the electrode pool is provided with a cap 53 for sealing the container, and the cap 53 is provided with a connecting hole for the electrode bar and the liquid discharge pipe to pass through.
The nozzles of the first liquid discharge pipe W1 and the second liquid discharge pipe W2 are positioned above the water surface. Since the first drain pipe W1 and the second drain pipe W2 discharge both the waste liquid and the air, they cannot be submerged in the liquid.
To sum up, the utility model combines the potentiometric method with the automatic analyzer technology, which not only satisfies the automatic analysis of low-concentration phosphate, but also realizes the in-situ monitoring of seawater.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention.
Claims (7)
1. An automatic detection device suitable for low-concentration phosphate in seawater is characterized in that: comprises a material conveying pipeline, and a feeding pipeline, a heater, a peristaltic pump and an electrode pool which are respectively connected with the material conveying pipeline; the feeding pipeline is connected with a plurality of liquid inlet pipes, the feeding pipeline is respectively communicated with the heater, the peristaltic pump and the electrode pool through a material conveying pipeline, and the feeding pipeline, the material conveying pipeline, the heater and the peristaltic pump form a circulation loop; and a liquid inlet pipe and a liquid discharge pipe are arranged at two ends of the electrode pool, and two electrode bars are arranged in the electrode pool.
2. The apparatus for automatic detection of low concentration phosphate in seawater according to claim 1, wherein: the feeding pipeline and the material conveying pipeline comprise a plurality of two-position three-way valves, and each two-position three-way valve comprises a normally closed end, a public end and a normally open end.
3. The apparatus according to claim 2, wherein the apparatus is adapted for automatic detection of low-concentration phosphates in seawater, and comprises: the feeding pipeline comprises two-position three-way valves Q0, Q1, Q2, Q5 and Q6; the material conveying pipeline comprises three-way valves Q3, Q4, Q7 and Q8;
wherein the normally open end of Q0 is connected with the pure water pipe, the normally closed end is connected with the first liquid discharge pipe W1, and the common end is connected with the normally open end of Q1; the normally closed end of the Q1 is connected with the sample tube S, and the common end of the Q1 is connected with the normally open end of the Q2; the normally closed end of Q2 is connected with the standard liquid pipe C, and the common end of the standard liquid pipe C is connected with the normally closed end of Q4; the common end of the Q4 is connected with the normally open end of the Q5; the normally closed end of Q5 is connected with the R1 medicament tube, and the common end of the Q5 is connected with the normally open end of Q6; the normally closed end of the Q6 is connected with the R2 medicament tube, and the common end of the Q6 is connected with one end of the peristaltic pump; the other end of the peristaltic pump is connected with the common end of the Q7; the normally closed end of the Q7 is connected with the liquid inlet of the electrode pool, the normally open end of the Q7 is connected with one end of the heater, and the other end of the heater is connected with the common end of the Q3; the normally closed end of Q3 is connected with the waste liquid pipe TW, and the normally open end is connected with the normally open end of Q4; the common end of Q8 is connected with the second drain pipe W2, and the normally closed end or/and the normally open end is/are connected with the drain pipe of the electrode pool.
4. The apparatus for automatic detection of low concentration phosphate in seawater according to claim 1, wherein: two electrode rods in the electrode pool are respectively a phosphate measuring electrode and a pH electrode.
5. The apparatus for automatic detection of low concentration phosphate in seawater according to claim 3, wherein: the liquid discharge pipe on the electrode pool comprises a long liquid discharge pipe and a short liquid discharge pipe, the long liquid discharge pipe is connected with the normally open end of the two-position three-way valve Q8, and the short liquid discharge pipe is connected with the normally closed end of the Q8.
6. The apparatus for automatic detection of low concentration phosphate in seawater according to claim 1, wherein: the electrode pool is a tubular container, the upper end of the electrode pool is provided with a cap used for sealing the container, and the cap is provided with a connecting hole for an electrode bar and a liquid discharge pipe to pass through.
7. The apparatus for automatic detection of low concentration phosphate in seawater according to claim 3, wherein: the orifices of the first liquid discharge pipe W1 and the second liquid discharge pipe W2 are positioned above the water surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221528963.5U CN217786983U (en) | 2022-06-16 | 2022-06-16 | Automatic detection device suitable for low concentration phosphate in seawater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221528963.5U CN217786983U (en) | 2022-06-16 | 2022-06-16 | Automatic detection device suitable for low concentration phosphate in seawater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217786983U true CN217786983U (en) | 2022-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221528963.5U Active CN217786983U (en) | 2022-06-16 | 2022-06-16 | Automatic detection device suitable for low concentration phosphate in seawater |
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| Country | Link |
|---|---|
| CN (1) | CN217786983U (en) |
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2022
- 2022-06-16 CN CN202221528963.5U patent/CN217786983U/en active Active
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