CN219871200U - Sulfide on-line analyzer - Google Patents
Sulfide on-line analyzer Download PDFInfo
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- CN219871200U CN219871200U CN202321015183.5U CN202321015183U CN219871200U CN 219871200 U CN219871200 U CN 219871200U CN 202321015183 U CN202321015183 U CN 202321015183U CN 219871200 U CN219871200 U CN 219871200U
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- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 238000001514 detection method Methods 0.000 claims abstract description 75
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 51
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 35
- 238000007599 discharging Methods 0.000 claims abstract description 19
- 239000007788 liquid Substances 0.000 claims description 69
- 239000002699 waste material Substances 0.000 claims description 23
- 239000000919 ceramic Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 3
- 230000008676 import Effects 0.000 claims 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 10
- 239000003513 alkali Substances 0.000 description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 6
- 239000012895 dilution Substances 0.000 description 4
- 238000010790 dilution Methods 0.000 description 4
- 239000008098 formaldehyde solution Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000011895 specific detection Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Automatic Analysis And Handling Materials Therefor (AREA)
Abstract
The utility model discloses a sulfide online analyzer, which comprises a detection device, a feeding device, a discharging device, a first reagent dripping device, a second reagent dripping device, a pure water device and a quantitative switching valve, wherein the quantitative switching valve is provided with a valve core which is rotationally arranged and six interfaces positioned outside the valve core; pure water enters the detection device from the quantitative pipe, and the quantitative pipe does not need to be cleaned after detection.
Description
Technical Field
The utility model relates to an online sulfide analyzer, and belongs to the technical field of chemical detection equipment.
Background
The sulfide online analyzer can be used for detecting the sulfide content in the liquid, one detection method adopted at present for detecting the sulfide content in the alkali liquor is an electrode potential method, wherein dilute hydrochloric acid is dripped into a detection device, and a pH electrode in the detection device detects the corresponding electrode potential to obtain the concentration of sodium hydroxide in the waste alkali liquor; then, a certain amount of formaldehyde solution is dripped into the detection device, sulfide contained in the waste alkali liquor reacts with formaldehyde at the moment, dilute hydrochloric acid is dripped into the detection device, and the pH electrode in the detection device detects the corresponding electrode potential to obtain the sulfide content in the waste alkali liquor. Because of the detection process, operations such as reagent dripping and pipeline cleaning are required, in the sulfide analyzer in the prior art, electromagnetic valves are usually respectively arranged on the pipelines, each pipeline is independently controlled, and the operations such as sample feeding, water feeding, reagent feeding, waste liquid discharging and the like are realized through the opening and closing of each electromagnetic valve. The analyzer has the defects of multiple pipelines, complex control, large volume and inconvenient use, and can not ensure the accuracy of liquid inlet amount every time, thereby influencing the detection result.
Disclosure of Invention
The utility model aims to provide a sulfide online analyzer with simple liquid path control and small volume, which is used for solving the technical problems of more pipelines, complex control and inaccurate liquid inlet amount control of the analyzer in the prior art.
The utility model adopts the following technical scheme: the sulfide online analyzer comprises a shell, wherein a detection device, a feeding device, a discharging device, a first reagent dripping device, a second reagent dripping device, a pure water device and a control system are arranged in the shell, the detection device is provided with a first reagent inlet, a second reagent inlet and a discharging port, the inlet of the pure water device is connected with a water inlet pipe, the inlet of the discharging device is connected with the discharging port of the detection device, the outlet of the discharging device is connected with a discharging pipe, the inlet of the feeding device is connected with a feeding pipe, the detection device is provided with a water/detection liquid inlet, the shell is internally provided with a quantitative switching valve, the quantitative switching valve comprises a valve core which is arranged in a rotating way and six ports which are uniformly arranged outside the valve core in an annular way, a first channel, a second channel and a third channel are arranged in the valve core, each interface is respectively provided with an inner side port facing the valve core and an outer side port far away from the valve core, the inner side port is in sliding sealing fit with the valve core, six interfaces are sequentially a first port, a second port, a third port, a fourth port, a fifth port and a sixth port, a quantitative pipe is communicated between the outer side port of the first port and the outer side port of the fourth port, the second port is connected with an outlet of a feeding device, a waste liquid discharge pipe is connected on the third port, the fifth port is connected with a water/detection liquid inlet of the detection device, the sixth port is connected with an outlet of a pure water device, two ends of a first channel are respectively communicated between the inner side port of the first port and the inner side port of the second port at first, two ends of the second channel are respectively communicated between the inner side port of the third port and the inner side port of the fourth port, two ends of the third channel are respectively communicated between the inner side port of the fifth port and the inner side port of the sixth port, after the valve core of the quantitative switching valve rotates, the two ends of the first channel are respectively communicated between the sixth port inner side port and the first port inner side port, the two ends of the second channel are respectively communicated between the second port inner side port and the third port inner side port, and the two ends of the third channel are respectively communicated between the fourth port inner side port and the fifth port inner side port.
The first channel, the second channel and the third channel are all ceramic pipelines.
And a three-way valve is connected between the waste liquid discharge pipe of the third port and the discharge pipe of the discharge device, and a liquid discharge main pipe is connected to the three-way valve.
The second reagent dripping device is a plunger pump.
The device is characterized in that a mounting plate is arranged in the shell, and the detection device, the feeding device, the discharging device, the first reagent dripping device, the second reagent dripping device, the pure water device and the quantitative switching valve are all arranged on the front surface of the mounting plate.
The front cover is arranged at the position, close to the front surface of the mounting plate, of the shell, and the rear cover is arranged at the position, close to the back surface of the mounting plate, of the shell.
The control system comprises a power supply, a PLC module, a wiring electric plate, a control electric plate, a display screen and a USB interface which are connected together, wherein the control electric plate is arranged on the back surface of the mounting plate, the power supply, the PLC module and the wiring electric plate are arranged on the inner side of a rear cover of the shell, and the display screen and the USB interface are arranged on a front cover of the shell.
The beneficial effects of the utility model are as follows: according to the utility model, the quantitative switching valve connected with the detection device, the pure water device and the feeding device is arranged, the quantitative tube to-be-detected liquid is used for accurately quantifying, and when the valve core of the rotary switching valve rotates, the to-be-detected liquid in the quantitative tube can be ensured to be at a constant value, so that the to-be-detected liquid entering the detection device each time is ensured to be constant, all to-be-detected liquid in the quantitative tube can enter the detection device under the action of pure water through the rotation of the valve core, and the pure water realizes the dilution effect on the to-be-detected liquid, so that the follow-up detection is facilitated. During detection, complicated liquid path control and switching are not needed, liquid inlet and water inlet are realized by only rotating the rotary switching valve once, and the cleaning after detection is very convenient, so that the utility model has the advantages of convenient control and accurate detection result; the sulfide online analyzer has the characteristics of reasonable pipeline arrangement and small volume.
In the utility model, during detection, the liquid to be detected is conveyed to an outlet of a feeding device through an inlet of the feeding device, enters a second port of a quantitative switching valve, flows into a first port through a first channel, flows into a fourth port through a quantitative pipe, flows into a third port through a second channel, a section of liquid to be detected is reserved in the quantitative pipe at the moment, and the redundant liquid is discharged through a waste liquid discharge pipeline; then, the valve core of the quantitative switching valve rotates to enable two ends of the first channel to be respectively communicated between the sixth port inner side port and the first port inner side port, two ends of the second channel to be respectively communicated between the second port inner side port and the third port inner side port, and two ends of the third channel to be respectively communicated between the fourth port inner side port and the fifth port inner side port; pure water is conveyed to an outlet of the pure water device through the pure water device, enters a sixth port of the quantitative switching valve, flows into the first port through the first channel, enters the quantitative pipe and is mixed with the measured liquid in the quantitative pipe, flows out of the fourth port after being mixed with the measured liquid, flows into the fifth port through the third channel, and then enters the detection device; the pure water device continuously operates to convey pure water into the detection device, the pure water dilutes the detected liquid entering the detection device until the dilution ratio reaches the requirement, and the pure water device stops operating; (6) The first reagent dripping device and the second reagent dripping device run, dilute hydrochloric acid and formaldehyde solution are dripped into the detection device, and the concentration of sulfide in the detected liquid is calculated by utilizing the pH electrode detection potential in the detection device; after the detection is finished, the discharging device is opened, and the waste liquid in the detecting device is discharged from an outlet of the discharging device; and finally, pure water can be introduced into the detection device to clean the detection device, and the waste liquid after cleaning is discharged by the discharge device. Since the pure water passes through the quantitative tube when diluting the liquid to be measured, the quantitative tube is already washed by the pure water, and the quantitative tube does not need to be washed after the detection is completed.
Preferably, the first channel, the second channel and the third channel are all ceramic pipelines, and have the advantage of alkali liquid corrosion resistance.
Preferably, a three-way valve is connected between the waste liquid discharge pipe of the third port and the discharge pipe of the discharge device, and the waste liquid discharged from the third port and the waste liquid discharged from the outlet of the detection device are discharged by a liquid discharge main pipe connected with the three-way valve.
Preferably, the second reagent dripping device adopts a plunger pump, and the adding amount of the reagent can be accurately controlled by using the plunger pump.
Preferably, the liquid path system and the circuit system can be separated by the mounting plate, so that the internal space layout of the instrument is more reasonable, and the mounting plate is convenient to mount and overhaul.
Drawings
FIG. 1 is a schematic diagram of an on-line sulfide analyzer according to one embodiment of the utility model;
FIG. 2 is a schematic view of the sulfide online analyzer of FIG. 1 with the back cover open;
FIG. 3 is a schematic view of the initial state of the quantitative switching valve of FIG. 1;
FIG. 4 is a schematic view of the metering switch valve of FIG. 3 after rotation;
FIG. 5 is a schematic block diagram of the fluid circuit of the sulfide online analyzer of FIG. 1;
fig. 6 is a schematic view of the quantitative switching valve of fig. 5 after rotation.
In the figure: 1-shell, 11-mounting plate, 12-power supply, 13-PLC module, 14-wiring electric plate, 15-control electric plate, 16-display screen, 17-USB interface, 2-detection device, 3-feeding device, 4-discharging device, 5-first reagent dropwise adding device, 6-second reagent dropwise adding device, 7-pure water device, 8-quantitative switching valve, 80-quantitative pipe, 81-first mouth, 82-second mouth, 83-third mouth, 84-fourth mouth, 85-fifth mouth, 86-sixth mouth, 87-first channel, 88-second channel, 89-third channel, 9-three-way valve, 91-liquid discharging main.
Detailed Description
The utility model will now be described in detail with reference to the drawings and specific examples.
The online sulfide analyzer according to an embodiment of the present utility model includes a housing 1, in which a detection device 2, a feeding device 3, a discharging device 4, a first reagent dripping device 5, a second reagent dripping device 6, a pure water device 7, a quantitative switching valve 8, and a control system are disposed in the housing 1, and a mounting plate 11 is disposed in the housing 1, and the detection device 2, the feeding device 3, the discharging device 4, the first reagent dripping device 5, the second reagent dripping device 6, the pure water device 7, and the quantitative switching valve 8 are all mounted on the front surface of the mounting plate 11. The front cover is arranged on the shell 1 near the front of the mounting plate 11, and the rear cover is arranged on the shell near the back of the mounting plate 11. The control system comprises a power supply 12, a PLC module 13, a wiring electric plate 14, a control electric plate 15, a display screen 16 and a USB interface 17 which are connected together, wherein the control electric plate 15 is arranged on the back surface of the mounting plate 11, the power supply 12, the PLC module 13 and the wiring electric plate 14 are arranged on the inner side of a rear cover of the shell, and the display screen 16 and the USB interface 17 are arranged on a front cover of the shell 1.
The liquid path principle of the sulfide online analyzer of the embodiment is shown in fig. 5 to 6, the detection device 2 is provided with a first reagent inlet, a second reagent inlet and a discharge port, the inlet of the pure water device 7 is connected with a water inlet pipe, the inlet of the discharge device 4 is connected with the discharge port of the detection device 2, the outlet of the discharge device 2 is connected with a discharge pipe, the inlet of the feed device 3 is connected with a feed pipe, the detection device 2 is also provided with a water/detection liquid inlet, the quantitative switching valve 8 comprises a valve core which is arranged in a rotating way and six ports which are uniformly arranged outside the valve core and are in annular arrangement, a first channel 87, a second channel 88 and a third channel 89 are arranged in the valve core, each port is respectively provided with an inner port facing the valve core and an outer port far away from the valve core, the inner port is in sliding sealing fit with the valve core, the six interfaces are sequentially a first port 81, a second port 82, a third port 83, a fourth port 84, a fifth port 85 and a sixth port 86, wherein a quantitative pipe 80 is communicated between the outer side port of the first port 81 and the outer side port of the fourth port 84, the second port 82 is connected with the outlet of the feeding device 2, the third port 83 is connected with a waste liquid discharge pipe, the fifth port 85 is connected with the water/detection liquid inlet of the detection device 2, the sixth port 86 is connected with the outlet of the pure water device 7, two ends of a first channel 87 are respectively communicated between the inner side port of the first port 81 and the inner side port of the second port 82 in the initial stage, two ends of a second channel 88 are respectively communicated between the inner side port of the third port 83 and the inner side port of the fourth port 84, two ends of the third channel 89 are respectively communicated between the inner side port of the fifth port 85 and the inner side port of the sixth port 86, and after the valve core of the quantitative switching valve 8 rotates, the first channel 87 is respectively connected between the inner port of the sixth port 86 and the inner port of the first port 81 at both ends, the second channel 88 is respectively connected between the inner port of the second port 82 and the inner port of the third port 83, and the third channel 89 is respectively connected between the inner port of the fourth port 84 and the inner port of the fifth port 85 at both ends. The first channel 87, the second channel 88 and the third channel 89 are all ceramic pipes.
The second reagent dripping device 6 is a plunger pump. A three-way valve 9 is connected between the waste liquid discharge pipe of the third port 83 and the discharge pipe of the discharge device 4, the three-way valve 9 is connected with a liquid discharge main 91, and the waste liquid discharged from the third port 83 and the waste liquid discharged from the outlet of the detection device are discharged from the liquid discharge main 91.
The detection process of the sulfide online analyzer of this embodiment is as follows: (1) The quantitative switching valve is in the initial state as shown in fig. 5, the liquid to be measured is conveyed to the outlet of the feeding device 3 through the inlet of the feeding device 3, the liquid to be measured enters the second port 82 of the quantitative switching valve 8, flows into the first port 81 through the first channel 87, flows into the fourth port 84 through the quantitative pipe 80, flows into the third port 83 through the second channel 88, a section of liquid to be measured is reserved in the quantitative pipe 80, and the redundant liquid is discharged through the waste liquid discharge pipeline; (2) Then, as shown in fig. 6, the spool of the proportional switching valve 8 is rotated so that both ends of the first passage 87 are respectively communicated between the inner port of the sixth port 86 and the inner port of the first port 81, both ends of the second passage 88 are respectively communicated between the inner port of the second port 82 and the inner port of the third port 83, and both ends of the third passage 89 are respectively communicated between the inner port of the fourth port 84 and the inner port of the fifth port 85; (3) Pure water is conveyed to a pure water device outlet through the pure water device 7, enters a sixth port 86 of the quantitative switching valve 8, flows into a first port 81 through a first channel 87, enters the quantitative pipe 80 and is mixed with measured liquid in the quantitative pipe 80, flows out of a fourth port 84 after being mixed with the measured liquid, flows into a fifth port 85 through a third channel 89, and then enters the detection device 2; (4) The pure water device 7 continuously operates to convey pure water into the detection device 2, the pure water dilutes the detected liquid entering the detection device 2 until the dilution ratio reaches the requirement, and the pure water device 7 stops operating; (5) The first reagent dripping device 5 and the second reagent dripping device 6 are operated, dilute hydrochloric acid and formaldehyde solution are dripped into the detection device 2, and the pH electrode in the detection device 2 is utilized to detect the potential, so that the concentration of sulfide in the detected liquid is calculated. The specific detection process is as follows: the second reagent dripping device 6 adopts a plunger pump, the plunger pump operates, dilute hydrochloric acid is dripped into the detection device 2, and the pH electrode in the detection device 2 detects the corresponding electrode potential to obtain the concentration of sodium hydroxide in the waste alkali solution. The first reagent dropwise adding device 5 operates, a certain amount of formaldehyde solution is dropwise added into the detecting device 2, sulfide in the detecting device 2 reacts with formaldehyde at the moment, the plunger pump operates, dilute hydrochloric acid is dropwise added into the detecting device 2, the pH electrode in the detecting device 2 detects the corresponding electrode potential, and the content of sulfide in waste alkali liquor is obtained. The discharging device 4 is opened to discharge the liquid in the detecting device 2. (6) After the detection is completed, the discharging device 4 is opened, and the waste liquid in the detecting device 2 is discharged from an outlet of the discharging device 4.
According to the utility model, the quantitative switching valve connected with the detection device, the pure water device and the feeding device is arranged, the quantitative tube to-be-detected liquid is used for accurately quantifying, when the valve core of the rotary switching valve rotates, the to-be-detected liquid in the quantitative tube can be ensured to be at a constant value, so that the to-be-detected liquid entering the detection device each time is ensured to be constant, the to-be-detected liquid in the quantitative tube can all enter the detection device under the action of pure water through the rotation of the valve core, the pure water realizes the dilution effect on the to-be-detected liquid, the follow-up detection is convenient, the pure water dilutes the to-be-detected liquid through the quantitative tube, and the quantitative tube does not need to be cleaned after the detection. In the utility model, during detection, complicated liquid path control and switching are not needed, the rotary switching valve is only required to rotate once to realize liquid inlet and water inlet, pure water is only required to be introduced into the detection device for cleaning after detection, and the discharge device is utilized to discharge the cleaning waste liquid, so that the cleaning is very convenient, and the utility model has the advantages of convenient control and accurate detection result; the sulfide online analyzer has the characteristics of reasonable pipeline arrangement and small volume.
The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be appreciated by persons skilled in the art that the present utility model is not limited to the embodiments described above, but is subject to various changes and modifications, which fall within the scope of the utility model as claimed.
Claims (8)
1. The utility model provides an online analysis appearance of sulphide, its includes the casing, is equipped with detection device, feed arrangement, discharge device, first reagent dropwise add device, second reagent dropwise add device, purifier and control system in the casing, be equipped with first reagent import, second reagent import and bin outlet on the detection device, the entrance connection of purifier has the inlet tube, discharge device's import is connected with detection device's bin outlet, and discharge device's exit linkage has the discharge pipe, be connected with the inlet pipe on feed arrangement's the import, its characterized in that: the detection device is provided with a water/detection liquid inlet, a quantitative switching valve is arranged in the shell, the quantitative switching valve comprises a valve core which is rotationally arranged and six ports which are uniformly arranged outside the valve core and are annularly arranged, a first channel, a second channel and a third channel are arranged in the valve core, each port is respectively provided with an inner side port facing the valve core and an outer side port far away from the valve core, the inner side ports are in sliding sealing fit with the valve core, the six ports are sequentially a first port, a second port, a third port, a fourth port, a fifth port and a sixth port, a quantitative pipe is communicated between the outer side port of the first port and the outer side port of the fourth port, the second port is connected with an outlet of the feeding device, the third port is connected with a waste liquid discharge pipe, the fifth port is connected with the water/detection liquid inlet of the detection device, the sixth port is connected with the outlet of the pure water device, the two ends of the first channel are respectively communicated between the inner side port of the first port and the inner side port of the second port, the two ends of the second channel are respectively communicated between the inner side port of the third port and the inner side port of the fourth port, the inner side port is respectively communicated between the inner side port of the third port and the inner side port, the inner side port of the fifth port and the inner side port of the inner side port respectively, the inner side port of the valve is communicated between the inner side port of the inner side port and the inner side port of the inlet of the water/outer port is respectively, the inlet of the water/outer port is respectively.
2. The sulfide online analyzer according to claim 1, wherein: the first channel, the second channel and the third channel are all ceramic pipelines.
3. The sulfide online analyzer according to claim 1, wherein: a three-way valve is connected between the waste liquid discharge pipe of the third port and the discharge pipe of the discharge device, and a liquid discharge main pipe is connected to the three-way valve.
4. The sulfide online analyzer according to claim 1, wherein: the second reagent dripping device is a plunger pump.
5. The sulfide online analyzer according to claim 1, wherein: the device is characterized in that a mounting plate is arranged in the shell, and the detection device, the feeding device, the discharging device, the first reagent dripping device, the second reagent dripping device, the pure water device and the quantitative switching valve are all arranged on the front surface of the mounting plate.
6. The sulfide online analyzer according to claim 5, wherein: the front cover is arranged at the position, close to the front surface of the mounting plate, of the shell, and the rear cover is arranged at the position, close to the back surface of the mounting plate, of the shell.
7. The sulfide online analyzer according to claim 6, wherein: the control system comprises a power supply, a PLC module, a wiring electric plate, a control electric plate, a display screen and a USB interface which are connected together.
8. The sulfide online analyzer according to claim 7, wherein: the control electric plate is arranged on the back of the mounting plate, the power supply, the PLC module and the wiring electric plate are arranged on the inner side of the rear cover of the shell, and the display screen and the USB interface are arranged on the front cover of the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321015183.5U CN219871200U (en) | 2023-04-28 | 2023-04-28 | Sulfide on-line analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321015183.5U CN219871200U (en) | 2023-04-28 | 2023-04-28 | Sulfide on-line analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219871200U true CN219871200U (en) | 2023-10-20 |
Family
ID=88323955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321015183.5U Active CN219871200U (en) | 2023-04-28 | 2023-04-28 | Sulfide on-line analyzer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219871200U (en) |
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2023
- 2023-04-28 CN CN202321015183.5U patent/CN219871200U/en active Active
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