CN219737288U - Metering device, water sample diluting device and ammonia nitrogen on-line analyzer - Google Patents
Metering device, water sample diluting device and ammonia nitrogen on-line analyzer Download PDFInfo
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- CN219737288U CN219737288U CN202320889305.7U CN202320889305U CN219737288U CN 219737288 U CN219737288 U CN 219737288U CN 202320889305 U CN202320889305 U CN 202320889305U CN 219737288 U CN219737288 U CN 219737288U
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- ammonia nitrogen
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- water sample
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 91
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 title claims abstract description 69
- 238000007865 diluting Methods 0.000 title claims abstract description 19
- 238000001514 detection method Methods 0.000 claims abstract description 88
- 239000012153 distilled water Substances 0.000 claims abstract description 32
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 24
- 238000011002 quantification Methods 0.000 claims abstract description 16
- 239000007788 liquid Substances 0.000 claims description 41
- 239000012895 dilution Substances 0.000 claims description 35
- 238000010790 dilution Methods 0.000 claims description 35
- 239000000243 solution Substances 0.000 claims description 28
- 230000029087 digestion Effects 0.000 claims description 21
- 238000011161 development Methods 0.000 claims description 17
- 230000002572 peristaltic effect Effects 0.000 claims description 10
- 239000011521 glass Substances 0.000 claims description 6
- 239000012898 sample dilution Substances 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 5
- 238000001035 drying Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000003113 dilution method Methods 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 210000001015 abdomen Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000011981 development test Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 230000036284 oxygen consumption Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Abstract
The utility model provides a metering device, a water sample diluting device and an ammonia nitrogen online analyzer. The metering device provided by the utility model is used for metering a solution to be measured of an ammonia nitrogen online analyzer, and comprises the following components: a metering tube, a first detection device, a second detection device and a third detection device; the metering tube is used for accommodating the solution to be measured, and the solution to be measured comprises a water sample, a detection reagent and distilled water; the first detection device, the second detection device and the third detection device are respectively used for detecting the quantification of any one of the solutions to be detected, and the quantification detected by the first detection device, the second detection device and the third detection device is sequentially increased. The method can avoid the deviation of ammonia nitrogen content of the finally diluted water sample to be more than 5%, and meets the standard requirement.
Description
Technical Field
The utility model relates to the technical field of water quality analysis, in particular to a metering device, a water sample diluting device and an ammonia nitrogen online analyzer.
Background
Ammonia nitrogen is a nutrient in a water body, is a main oxygen consumption pollutant in the water body, and is toxic to fish and certain aquatic organisms. At present, an online water quality analyzer is widely applied to component analysis in pollution source emission, wherein components analyzed by the online ammonia nitrogen analyzer comprise ammonia nitrogen. However, the ammonia nitrogen online analyzer has a certain detection range, and ammonia nitrogen content cannot be accurately detected when the detection range is exceeded, so that the water sample needs to be diluted when the detection range is exceeded.
Generally, a digestion tank dilution method is used for ammonia nitrogen high concentration test, however, the traditional ammonia nitrogen online analyzer is easy to cause the ammonia nitrogen content deviation of a finally diluted water sample to exceed 5% and exceeds the requirement of 3% specified by the industry standard because the solution to be measured is not accurately metered.
Therefore, it is necessary to provide a metering device, a water sample diluting device and an ammonia nitrogen on-line analyzer to effectively solve the above problems.
Disclosure of Invention
The utility model provides a metering device, a water sample diluting device and an ammonia nitrogen online analyzer.
The embodiment of the utility model provides a metering device for metering a solution to be measured of an ammonia nitrogen online analyzer, which comprises the following components: a metering tube, a first detection device, a second detection device and a third detection device; the metering tube is used for accommodating the solution to be measured, and the solution to be measured comprises a water sample, a detection reagent and distilled water; the first detection device, the second detection device and the third detection device are respectively used for detecting the quantification of any one of the solutions to be detected, and the quantification detected by the first detection device, the second detection device and the third detection device is sequentially increased.
Preferably, the first detection device is used for detecting the quantification of the water sample and the detection reagent, the second detection device is used for detecting the quantification of the distilled water added into the digestion tank, and the third detection device is used for detecting the quantification of the distilled water for cleaning the dilution vessel.
Preferably, the first detection device, the second detection device and the third detection device are liquid level sensors sequentially positioned at a first liquid level, a second liquid level and a third liquid level, and the first liquid level, the second liquid level and the third liquid level are sequentially increased.
Preferably, the metering tube comprises an inlet section, a middle section and an outlet section which are sequentially communicated, and the width of the middle section is larger than that of the inlet section and the outlet section.
Preferably, a peristaltic pump is also included, the peristaltic pump being located at an end of the inlet section remote from the intermediate section.
The utility model also provides a water sample dilution device for diluting the water sample of the ammonia nitrogen on-line analyzer, comprising: the metering device, the distilled water inlet, the dilution container and the electromagnetic valve are all connected with the multi-way valve, and the liquid outlet is connected with the electromagnetic valve.
Preferably, a vent is also included, the vent being connected to the dilution vessel.
Preferably, the dilution vessel is funnel-shaped, and the dilution vessel is made of glass.
The utility model also provides an ammonia nitrogen on-line analyzer, which is used for detecting the ammonia nitrogen content in the water sample, and comprises the following steps: the metering device, the multi-way valve, the distilled water inlet, the dilution container, the electromagnetic valve, the liquid outlet, the detection reagent port and the ammonia nitrogen digestion color development device are all connected with the multi-way valve, and the liquid outlet is connected with the electromagnetic valve.
Preferably, the device further comprises a control system, wherein the control system is connected with the ammonia nitrogen digestion and color development device and is used for displaying the detection result of the ammonia nitrogen digestion and color development device.
Compared with the prior art, the technical scheme of the embodiment of the utility model has the following beneficial effects:
the metering device, the water sample diluting device and the ammonia nitrogen online analyzer provided by the embodiment of the utility model can accurately meter various solutions to be measured when the ammonia nitrogen online analyzer analyzes the ammonia nitrogen content in the water sample, avoid that the deviation of the ammonia nitrogen content of the finally diluted water sample exceeds 5%, and meet the standard requirement.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the prior art, a brief description of the drawings is provided below, wherein it is apparent that the drawings in the following description are some, but not all, embodiments of the present utility model. Other figures may be derived from these figures without inventive effort for a person of ordinary skill in the art.
FIG. 1 is a schematic view of a metering device according to an embodiment of the present utility model;
fig. 2 is a schematic structural diagram of an ammonia nitrogen online analyzer according to an embodiment of the present utility model.
Reference numerals illustrate:
100. an ammonia nitrogen on-line analyzer; 110. a metering device; 111 metering tube, 112, first detection device; 113. a second detection device; 114. a third detection device; 115. a peristaltic pump; 121. a multi-way valve; 122. a dilution vessel; 123. an electromagnetic valve; 124. a liquid outlet; 125. a distilled water inlet, 126, and a vent; 127. ammonia nitrogen digestion and color development device; 128. a detection reagent port; 130. control system
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The technical scheme of the utility model is described in detail below by specific examples. The following embodiments may be combined with each other, and some embodiments may not be repeated for the same or similar concepts or processes.
Based on the problems existing in the prior art, the embodiment of the utility model provides a metering device, a water sample diluting device and an ammonia nitrogen online analyzer.
FIG. 1 is a schematic view of a metering device according to an embodiment of the present utility model;
fig. 2 is a schematic structural diagram of an ammonia nitrogen online analyzer according to an embodiment of the present utility model. Referring now to fig. 1, an embodiment of the present utility model provides a metering device 110 for metering a solution to be measured of an ammonia nitrogen online analyzer. The metering device 110 includes: a metering tube 111, a first detection device 112, a second detection device 113 and a third detection device 114. The metering tube 111 is used to hold a solution to be measured. The solution to be measured comprises a water sample, a detection reagent and distilled water. The first detection device 112, the second detection device 113 and the third detection device 114 are respectively used for detecting the quantitative amount of any one of the solutions to be detected, and the quantitative amounts detected by the first detection device 112, the second detection device 113 and the third detection device 114 are sequentially increased.
In one implementation, the metering tube 111 may include an inlet section, a middle section, and an outlet section that are sequentially connected, the middle section having a width greater than the widths of the inlet section and the outlet section, the inlet section may be located at an upper end of the metering tube 111, and the outlet section may be located at a lower end of the metering tube 111. That is, the measuring tube 111 can be designed as a glass tube with a large belly, the middle section is wider, and two ends of the glass tube are connected with slender pipelines. The metering tube 111 is used for containing a solution to be measured, the solution to be measured comprises a solution required by an ammonia nitrogen on-line analyzer when detecting the ammonia nitrogen content in a water sample, and the solution to be measured is placed into the metering tube 111 to measure the quantification of the ammonia nitrogen, so that the accuracy of measuring the ammonia nitrogen content is improved, the detection deviation of the ammonia nitrogen content in the water sample is reduced, and the condition that the standard requirement is exceeded is avoided. The solution to be detected comprises a water sample, a detection reagent and distilled water. The water sample may include a water sample before dilution and a water sample after dilution. The detection reagent comprises a reagent for ammonia nitrogen digestion and color development, for example, the detection reagent can at least comprise three different reagents, namely a reagent A, a reagent B and a reagent C, and the different reagents are selected according to a color development test. Distilled water may include distilled water for diluting a water sample and distilled water for washing a diluting container.
In one implementation, the first detection device 112, the second detection device 113, and the third detection device 114 are liquid level sensors sequentially positioned at a first liquid level, a second liquid level, and a third liquid level, and the first liquid level, the second liquid level, and the third liquid level are sequentially increased. The first detection device 112, the second detection device 113 and the third detection device 114 may each comprise a transmitter and a receiver for detecting whether the amount of the solution to be measured in the measuring tube reaches the corresponding liquid level. The first liquid level and the second liquid level may be located at two different positions arranged up and down below the middle section, i.e. at the side of the outlet section, and the first liquid level is lower than the second liquid level. The third liquid level may be located above the middle section, i.e. at the side of the inlet section.
In one implementation, the first detection device 112 is used to detect a water sample and to detect the quantification of a reagent. The second detection device 113 is used for detecting the quantification of distilled water added to the digestion tank. The third detection means 114 is used for detecting the quantification of distilled water for washing the dilution vessel. In other examples, the solution to be detected by the three detection devices can be set according to the quantitative requirements of the diluted water sample and the solution to be detected when detecting the ammonia nitrogen content.
In one implementation, metering device 110 further includes peristaltic pump 115. Peristaltic pump 115 is located at the end of the inlet section remote from the intermediate section. Peristaltic pump 115 may be used to blow air, to thoroughly mix the solution within the metering tube, etc.
In summary, the metering device 110 provided in the embodiment of the utility model is provided with three detection devices at different positions, and the detection devices are used for accurately metering each solution to be measured of the ammonia nitrogen online analyzer, so that the deviation of the ammonia nitrogen content of the finally diluted water sample is prevented from exceeding 5%, and the standard requirement is met.
Furthermore, the utility model also provides a water sample dilution device which is used for diluting the water sample of the ammonia nitrogen on-line analyzer. As shown in fig. 2, the water sample diluting device includes: in any of the above embodiments, the metering device 110, the multi-way valve 121, the distilled water inlet 125, the dilution vessel 122, the solenoid valve 123, and the drain 124 are provided. The metering device 110, the distilled water inlet 125, the dilution vessel 122, and the solenoid valve 123 are all connected to the multi-way valve 121, and the drain port 124 is connected to the solenoid valve 123.
Wherein the multi-way valve 121 may be used to control communication between any two of its connected channels. For example, communication between metering device 110 and dilution vessel 122 may be controlled, etc. Distilled water can enter the metering tube 111 through the multi-way valve 121 for metering through the distilled water inlet 125, and the metered distilled water can also enter the dilution vessel 122 through the multi-way valve 121 for dilution. Distilled water may be introduced into the dilution vessel 122 through the multi-way valve 121 for washing through the distilled water inlet 125. The solution in the dilution vessel 122 can be discharged through the drain port 124 after opening the solenoid valve 123. The dilution vessel 122 may be funnel-shaped, and may be made of glass. The water sample dilution device may also include a vent 126, the vent 126 being connected to the dilution vessel 122.
Further, the utility model also provides an ammonia nitrogen online analyzer 100 for detecting the ammonia nitrogen content in the water sample. The ammonia nitrogen online analyzer 100 includes: the water sample diluting device, the detection reagent port 128, and the ammonia nitrogen digestion developing device 127 in any of the above embodiments. The metering device 110, the distilled water inlet 125, the dilution container 122, the electromagnetic valve 123, the detection reagent port 128 and the ammonia nitrogen digestion and color development device 127 are all connected with the multi-way valve 121, and the liquid outlet 124 is connected with the electromagnetic valve 123.
The diluted water sample can enter the ammonia nitrogen digestion and color development device 127 through the multi-way valve 121, the detection reagent can firstly enter the metering device 110 through the multi-way valve 121 for metering, and then a certain amount of detection reagent enters the ammonia nitrogen digestion and color development device 127 through the multi-way valve 121 for detecting the ammonia nitrogen content in the diluted water sample.
In one implementation, the ammonia nitrogen online analyzer 100 further includes a control system 130, where the control system 130 is connected to the ammonia nitrogen digestion and color development device 127, and is configured to display a detection result of the ammonia nitrogen digestion and color development device. In other examples, the control system 130 may be further connected to the multi-way valve 121, the first detection device 112, the second detection device 113, the third detection device 114, and the like, for controlling the detection flow of the whole ammonia nitrogen online analyzer 100.
It will be appreciated that the calibration is performed using a generally conventional range, such as a range of (0-10) mg/L. In the in-range test, the ammonia nitrogen online analyzer 100 does not dilute the water sample before sample injection, and is consistent with the normal test flow.
When the actual water sample is tested to exceed the concentration of 10mg/L corresponding to the analyzer, the ammonia nitrogen online analyzer 100 considers the data as invalid data and does not display the data on a screen. Meanwhile, a water sample dilution device of the ammonia nitrogen online analyzer 100 is started to dilute the water sample. During the dilution process, the ammonia nitrogen online analyzer 100 determines the dilution factor (or dilution volume) based on the approximate data of the previous measurement. Next, the water sample is drawn from metering device 110, rinsed metering tube 111, and is volumetric to either the first level or the second level (as determined from the first measurement), and then passed through multi-way valve 121 into funnel-type dilution vessel 122. Distilled water was used to rinse the metering tube 111, and then a metered amount of distilled water at a third level (determined from the first measurement) was added, diluted by passing through the multi-way valve 121 into the funnel-shaped dilution vessel 122, and aerated thoroughly by peristaltic pump 115. And then the diluted water sample is used for washing the metering tube 111, and is quantified to a first liquid level, and the diluted water sample is sent into the ammonia nitrogen digestion and color development device 127, namely a digestion tank, through the multi-way valve 121 to carry out color development reaction.
The dilution factor of the water sample is calculated according to the metering volume, and then the measured data is multiplied by the dilution factor to be used as a display value for screen output (namely, the final actual water sample test value). When the instrument performs color development, the electromagnetic valve 123 at the bottom of the funnel of the dilution container 122 is opened to perform gravity drainage (a peristaltic pump can be additionally arranged for blowing air), then the third liquid level distilled water is metered by the metering device 110, the funnel glass wall is cleaned along the liquid diversion device above the dilution container 122, the peristaltic pump is bulged to clean the liquid, the heating wire is wound on the outer wall to perform drying (the drying temperature is controlled to be 50 ℃ as appropriate, the temperature can be set), the drying time is an empirical value (can be set), and the next dilution is to be performed.
When the water sample diluting device is adopted, the high-concentration standard liquid can be tested for periodic check, and the check must meet the requirements of related industry standards once a week, so that the test data is ensured to be effective.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.
Claims (10)
1. A metering device for metering a solution to be measured of an ammonia nitrogen on-line analyzer, comprising: a metering tube, a first detection device, a second detection device and a third detection device; the metering tube is used for accommodating the solution to be measured, and the solution to be measured comprises a water sample, a detection reagent and distilled water; the first detection device, the second detection device and the third detection device are respectively used for detecting the quantification of any one of the solutions to be detected, and the quantification detected by the first detection device, the second detection device and the third detection device is sequentially increased.
2. The metering device of claim 1 wherein the first detection means is for detecting the quantification of the water sample and the detection reagent, the second detection means is for detecting the quantification of the distilled water added to the digestion tank, and the third detection means is for detecting the quantification of the distilled water washing the dilution vessel.
3. The metering device of claim 1, wherein the first, second and third detecting devices are liquid level sensors positioned at a first liquid level, a second liquid level and a third liquid level in sequence, and the first liquid level, the second liquid level and the third liquid level are increased in sequence.
4. A metering device as claimed in claim 1 wherein the metering tube comprises an inlet section, a middle section and an outlet section which are in communication in sequence, the middle section having a width greater than the width of the inlet section and the outlet section.
5. A metering device as claimed in claim 4 further comprising a peristaltic pump located at an end of the inlet section remote from the intermediate section.
6. A water sample diluting device for dilute ammonia nitrogen on-line analysis appearance's water sample, its characterized in that includes: the metering device, the multi-way valve, the distilled water inlet, the dilution vessel, the electromagnetic valve and the liquid outlet according to any one of claims 1 to 4, wherein the metering device, the distilled water inlet, the dilution vessel and the electromagnetic valve are all connected with the multi-way valve, and the liquid outlet is connected with the electromagnetic valve.
7. The water sample dilution apparatus of claim 6 further comprising a vent connected to the dilution vessel.
8. The water sample diluting apparatus of claim 6, wherein the diluting container is funnel-shaped and the diluting container is made of glass.
9. An ammonia nitrogen on-line analyzer for to detecting ammonia nitrogen content in water sample, which is characterized by comprising: the metering device, the multi-way valve, the distilled water inlet, the dilution container, the electromagnetic valve, the liquid outlet, the detection reagent port and the ammonia nitrogen digestion and color development device according to any one of claims 1 to 4, wherein the metering device, the distilled water inlet, the dilution container, the electromagnetic valve, the detection reagent port and the ammonia nitrogen digestion and color development device are all connected with the multi-way valve, and the liquid outlet is connected with the electromagnetic valve.
10. The ammonia nitrogen online analyzer of claim 9, further comprising a control system connected to the ammonia nitrogen digestion and color development device for displaying a detection result of the ammonia nitrogen digestion and color development device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320889305.7U CN219737288U (en) | 2023-04-19 | 2023-04-19 | Metering device, water sample diluting device and ammonia nitrogen on-line analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320889305.7U CN219737288U (en) | 2023-04-19 | 2023-04-19 | Metering device, water sample diluting device and ammonia nitrogen on-line analyzer |
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| Publication Number | Publication Date |
|---|---|
| CN219737288U true CN219737288U (en) | 2023-09-22 |
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| CN202320889305.7U Active CN219737288U (en) | 2023-04-19 | 2023-04-19 | Metering device, water sample diluting device and ammonia nitrogen on-line analyzer |
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| CN (1) | CN219737288U (en) |
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- 2023-04-19 CN CN202320889305.7U patent/CN219737288U/en active Active
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