CN220361204U - Reagent solution pollution prevention device for ammonium nitrogen flow analysis - Google Patents
Reagent solution pollution prevention device for ammonium nitrogen flow analysis Download PDFInfo
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- CN220361204U CN220361204U CN202321415540.7U CN202321415540U CN220361204U CN 220361204 U CN220361204 U CN 220361204U CN 202321415540 U CN202321415540 U CN 202321415540U CN 220361204 U CN220361204 U CN 220361204U
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- Prior art keywords
- reagent
- filter head
- reagent bottle
- ammonium nitrogen
- flow analysis
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- 239000003153 chemical reaction reagent Substances 0.000 title claims abstract description 96
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 238000005206 flow analysis Methods 0.000 title claims abstract description 28
- 230000002265 prevention Effects 0.000 title claims abstract description 16
- 230000001681 protective effect Effects 0.000 claims abstract description 29
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 32
- 239000000741 silica gel Substances 0.000 claims description 31
- 229910002027 silica gel Inorganic materials 0.000 claims description 31
- 239000003365 glass fiber Substances 0.000 claims description 12
- -1 polypropylene Polymers 0.000 claims description 11
- 239000004743 Polypropylene Substances 0.000 claims description 7
- 229920001155 polypropylene Polymers 0.000 claims description 7
- 229920002379 silicone rubber Polymers 0.000 claims description 5
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 4
- 239000004945 silicone rubber Substances 0.000 claims description 4
- 239000004695 Polyether sulfone Substances 0.000 claims description 3
- 229920001903 high density polyethylene Polymers 0.000 claims description 3
- 239000004700 high-density polyethylene Substances 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 3
- 229920006393 polyether sulfone Polymers 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 2
- 238000011109 contamination Methods 0.000 claims 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 23
- 229910021529 ammonia Inorganic materials 0.000 description 11
- 238000004458 analytical method Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 238000007789 sealing Methods 0.000 description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 235000015097 nutrients Nutrition 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
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- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The utility model relates to the field of reagent protection, in particular to a reagent solution pollution prevention device for ammonium nitrogen flow analysis, which comprises a first-stage filter head, a protective column main body and a second-stage filter head, wherein a protective column upper cover is arranged above the protective column main body, the upper end of the protective column upper cover is connected with the lower end of the first-stage filter head, the lower end of the protective column main body is connected with the upper end of the second-stage filter head, the second-stage filter head is connected with a reagent bottle through a connecting pipe, and the reagent bottle is also connected with a solution flow path pipe.
Description
Technical Field
The utility model relates to the field of reagent protection, in particular to a reagent solution pollution prevention device for ammonium nitrogen flow analysis.
Background
The analysis of ammonium nitrogen is one of the difficulties in monitoring the nutrient salts of the water body, and the main difficulty in the analysis and detection personnel is that ammonium nitrogen samples and reagents are easy to be polluted by ammonia in the air, so that the blank is high, particularly, the on-line analysis of the nutrient salts and trace elements of the water body is realized by the flow analysis technology widely applied at present, and the flow analysis process is carried out in a closed pipeline and is hardly interfered by external pollutants. However, samples and reagents in flow analysis are pumped into a reaction pipeline under the action of a pump, air can enter a sample bottle or a reagent bottle to ensure pressure balance, ammonia and particulate matters in the air can enter the sample bottle and the reagent bottle through vent holes to pollute the samples and the reagents, and particularly under the condition of long-time working, the influence is more obvious, the samples and the reagents absorb ammonia in the air for a long time to cause blank increase, and a base line in the running process of an instrument floats and the like.
Currently, in order to avoid the pollution of air to the ammonium nitrogen analysis, the scientific research generally requires that the analysis process be far away from ammonia pollution sources such as analysis laboratories, toilets and other places so as to reduce the air pollution; or the analysis and measurement are finished in a special clean operation or clean room, but the cleaning device needs to be specially made for the target object, not only particulate matters and organisms are removed, but also ammonia in the air is removed, and the device has a complex structure, large volume and high cost, and is not beneficial to on-site analysis. In the prior art, the pollution of ammonia can be effectively removed through an acidified silica gel column, however, the following problems still exist in the practical application process: the self-made acidified silica gel column is formed by cutting a disposable injector, the upper end of the self-made acidified silica gel column is open, the inside of the self-made acidified silica gel column is filled with acidified silica gel, the self-made acidified silica gel column is modified, the tightness is poor, and silica gel leakage is caused by frequent dumping in experimental operation; 2, when the reagent needs to be replenished, the acidified silica gel column can not be horizontally placed, so that the actual operation is seriously influenced; 3, the lower end of the silica gel column is directly connected with the reagent bottle, and small-particle silica gel is easy to drop into a sample or a reagent to cause pollution; 4, the upper end of the acidified silica gel column is placed in an open mode, and a large amount of sedimentation particles enter the column in a severe air environment, so that blockage is easily caused. In order to solve the long-term puzzled problem in the practical experimental operation, and simultaneously meet the requirement of preventing pollution of reagents and samples in ammonium nitrogen flow analysis, it is necessary to provide a simple and stable reagent protection device.
Disclosure of Invention
The utility model aims to provide a reagent solution pollution prevention device for ammonium nitrogen flow analysis, which can protect a reagent from being polluted by ammonia in air during the ammonium nitrogen flow analysis. The method solves the defects of the prior art, and better meets the requirements of actual work.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a reagent solution anti-pollution device for ammonium nitrogen flow analysis, includes one-level filter head, protection post main part and second grade filter head, protection post main part top is provided with the protection post upper cover, the upper end of protection post upper cover is connected with the lower extreme of one-level filter head, the lower extreme of protection post main part is connected with the upper end of second grade filter head, the second grade filter head passes through the connecting pipe and is connected with the reagent bottle, the reagent bottle still is connected with solution flow path pipe.
Preferably, the inside of the protection column main body is filled with acidified silica gel and glass fibers, and the glass fibers are tiled at the bottom of the protection column main body.
Preferably, the primary filter head and the secondary filter head are needle type online filters, and polyether sulfone filter membranes with the pore diameters of 0.40-0.50 μm are arranged inside the primary filter head and the secondary filter head.
Preferably, a hollow outlet is formed in the top end of the upper cover of the protective column, and the first-stage filter head is connected with the upper cover of the protective column in a sealing mode through the outlet.
Preferably, the reagent bottle is provided with a reagent bottle cap, the reagent bottle cap is a wide-mouth bottle cap, two through holes are formed in the reagent bottle cap, and the connecting pipe and the solution flow path pipe are connected with the reagent bottle through the through holes.
Preferably, the connecting pipe is a silicone rubber pipe, and the inner diameter of the connecting pipe is 1.6mm.
Preferably, the height of the protective column main body is 10-15mm.
Preferably, the protective column upper cover and the protective column main body are both made of polypropylene.
Preferably, the reagent bottle cap and the reagent bottle are both made of high-density polyethylene, or the reagent bottle cap and the reagent bottle are both made of polypropylene.
Preferably, a through hole in the reagent bottle cover is fixedly connected with a mounting sleeve, the solution flow path pipe is mounted in the mounting sleeve, and the solution flow path pipe is made of polytetrafluoroethylene.
Compared with the prior art, the utility model has the beneficial effects that: the application provides a reagent solution anti-pollution device for ammonium nitrogen flow analysis, which can protect samples and reagents from being polluted by ammonia gas and particulate matters in air and overcome the defects of the prior art during the ammonium nitrogen flow analysis. The accuracy of the ammonium nitrogen determination result is ensured, and the method has higher practical application value. 1, by perfecting the design of a main body of the protective column, an upper cover of the protective column is increased to form a relatively sealed deconstruction, even if toppling occurs, the acidified silica gel filled in the protective column can not leak out, and the protective column can be completely horizontally placed when the whole protective column is taken down, so that the sample or the reagent in the bottle can be conveniently supplemented; 2 this application design has one-level filter head and second grade filter head, when using in abominable air environment, the one-level filter head can effectively filter dust particle in the air, avoids blockking up, and is convenient for change, and the design of second grade filter head then can prevent that little granule silica gel from dropping to sample or reagent in lead to the pollution.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
in the figure: 1. a first stage filter head; 2. a protective column upper cover; 3. a protective column body; 4. acidifying silica gel; 5. glass fibers; 6. a secondary filter head; 7. a connecting pipe; 8. a solution flow path tube; 9. reagent bottle caps; 10. a reagent bottle; 11. and (3) a reagent.
Detailed Description
The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to fig. 1 of the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments. 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.
Referring to FIG. 1, an embodiment of the present utility model
Examples:
as shown in fig. 1:
the utility model provides a reagent 11 solution anti-pollution device for ammonium nitrogen flow analysis, includes one-level filter head 1, protection post main part 3 and secondary filter head 6, protection post main part 3 top is provided with protection post upper cover 2, the upper end of protection post upper cover 2 is connected with the lower extreme of one-level filter head, the lower extreme of protection post main part 3 is connected with the upper end of secondary filter head 6, secondary filter head 6 is connected with reagent bottle 10 through connecting pipe 7, reagent bottle 10 still is connected with solution flow path pipe 8.
The primary filter head 1 in this application is used to filter most of the particulate matter in the air.
The inside of the protection column main body 3 is filled with acidified silica gel 4 and glass fibers 5, and the glass fibers 5 are tiled at the bottom of the protection column main body 3.
Ammonia in this application is all absorbed by acidizing silica gel 4, and glass fiber 5 and second grade filter head 6 can prevent that acidizing silica gel 4 from getting into the silicone rubber pipe and causing the jam, further prevent reagent 11 in the reagent bottle 10 from being polluted, and acidizing silica gel 4 is by 200g silica gel stoving night at 70 ℃, adds 50mL 6mol/L sulfuric acid again, the stirring is even after preparing.
The primary filter head 1 and the secondary filter head 6 are needle type online filters, and polyether sulfone filter membranes with the aperture of 0.40 μm are arranged inside the primary filter head 1 and the secondary filter head 6.
The device is used for filtering the polluted particles and other substances better so as to ensure the filtering accuracy.
The top of the protective column upper cover 2 is provided with a hollow outlet, and the primary filter head 1 is in sealing connection with the protective column upper cover 2 through the outlet.
The application sets up so, can guarantee that the air gets into reagent bottle 10 in order to guarantee pressure balance, can prevent again that the interior silica gel of protective column from spilling during experimental operation, can also be convenient with 1 sealing connection of one-level filter head.
The reagent bottle 10 is provided with a reagent bottle cap 9, the reagent bottle cap 9 is a wide-mouth bottle cap, two through holes are formed in the reagent bottle cap 9, and the connecting pipe 7 and the solution flow path pipe 8 are connected with the reagent bottle 10 through the through holes.
The present application sets up like this, and the installation and the dismantlement of convenient guard post and solution flow path pipe 8 guarantee simultaneously that reagent 11 in the bottle is pumped out smoothly under the airtight circumstances of reagent bottle 10.
The connecting pipe 7 is a silicon rubber pipe, and the inner diameter of the connecting pipe 7 is 1.6mm.
The application sets up so, can guarantee guard post and reagent bottle 10 sealing connection, and the air in the entering bottle all purifies through the guard post.
The height of the protective column body 3 is 12mm.
This application sets up so, guarantees the protection post and purifies the efficiency of absorbing ammonia, and the protection post of sufficient length can fully absorb the ammonia in the air, prolongs the live time of acidification silica gel 4 in the protection post simultaneously, reduces the change frequency.
The protective column upper cover 2 and the protective column main body 3 are both made of polypropylene.
This application adopts the plastics material, can guarantee when the normal effect of device, can also reduce cost, convenient production.
The reagent bottle cap 9 and the reagent bottle 10 are made of high-density polyethylene.
The application adopts the high-density polypropylene material, because the chemical stability is good, the target object ammonium nitrogen can not be adsorbed, and the high-density polypropylene material is widely applied to the current experiment and scientific research work, and is representative.
The reagent bottle cap 9 is characterized in that a mounting sleeve is fixedly connected in a through hole, the solution flow path pipe 8 is mounted in the mounting sleeve, and the solution flow path pipe 8 is made of polytetrafluoroethylene.
The arrangement of the device can ensure that the solution flow path pipe 8 is tightly connected with the reagent bottle 10 so as to ensure that all air entering the bottle is purified by the protection column; the polytetrafluoroethylene tube is widely applied to flow analysis, has good chemical stability and is not easy to adsorb chemical reaction substances.
The cleaning of reagent protection post device should be guaranteed before the installation, uses the laboratory to wash protection post main part, connecting pipe 7 and solution flow path pipe 8 repeatedly in advance, prevents to pollute, at first makes two holes on reagent bottle lid 9, and one of them hole is used for installing the sleeve pipe, and another hole is used for installing connecting pipe 7 to connect solution flow path pipe 8. And the connecting pipe 7 is penetrated into the hole, so that good tightness is ensured. The mounting sleeve is then connected to the solution flow path tube 8 and ensures that the solution flow path tube 8 extends into the bottom of the reagent bottle 10 to facilitate the flow of sample or reagent 11 from the bottle. After the completion of the connection of the solution channel pipe 8, the protection column main body 3 is attached and connected. The inside of the protective column main body 3 is filled with glass fiber 5 and acidified silica gel 4, and the preparation method of the acidified silica gel comprises the following steps: 200g of silica gel is taken, dried overnight at 70 ℃, added with 50mL of 6mol/L sulfuric acid and stirred uniformly to prepare the silica gel. The reagent protection column was first underfilled with glass fibers 5 of about 10mm thickness, followed by an acidified silica gel 4 over the glass fibers. After filling, the protective column upper cover 2 is screwed down, so that the filler in the protective column main body 3 is ensured not to be poured. The secondary filter head 6 is a needle type online filter, the upper end of the needle type online filter 6 is connected with the outlet of the lower end of the protection column main body 3, the lower end of the needle type online filter is connected with the connecting pipe 7, the needle type online filter is screwed down to ensure good sealing and stable protection column, and the connection and fixation of the protection column and the reagent bottle 10 are completed. And finally, the lower end of the first-stage filter head 1 is connected with the outlet of the upper cover 2 of the protective column and is screwed down to ensure good sealing. So far, the reagent solution pollution prevention protection device is installed and connected.
Working principle: the reagent bottle cap 9 is opened in a rotating way, after the reagent 11 required by the ammonium nitrogen flow analysis is added, the reagent bottle cap 9 is screwed down, and the solution flow path pipe 8 is adjusted to ensure that the solution flow path pipe 8 stretches into the bottom of the reagent bottle 10 so as to facilitate the outflow of the reagent 11 in the bottle. And (5) checking the tightness and stability of each joint, and performing flow analysis of ammonium nitrogen. In the analysis process, air firstly passes through the first-stage filter head 1, most of particulate matters in the air can be filtered 1 by the first-stage filter head, the air subjected to preliminary filtration enters the protective column, ammonia in the air is absorbed by the acidified silica gel 4 in the air, and the glass fiber 5 and the second-stage filter head 6 at the bottom can prevent the acidified silica gel or the particulate matters in the air from entering the silicone rubber tube 7 to cause blockage, so that the reagent 11 in the reagent bottle 10 is prevented from being polluted. The purpose of pollution prevention and protection of samples and reagents for ammonium nitrogen flow analysis can be realized by periodically replacing the acidified silica gel 4 and the primary and secondary filter heads filled in the protection column, and the accuracy of an ammonium nitrogen measurement result is improved.
While the fundamental and principal features of the utility model and advantages of the utility model have been shown and described, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to specific embodiments, and that the embodiments described in the examples can be combined as appropriate to form other embodiments that will be understood by those skilled in the art.
Claims (10)
1. A reagent solution anti-pollution device for ammonium nitrogen flow analysis, its characterized in that includes one-level filter head (1), protection post main part (3) and secondary filter head (6), protection post main part (3) top is provided with protection post upper cover (2), the upper end of protection post upper cover (2) is connected with the lower extreme of one-level filter head (1), the lower extreme of protection post main part (3) is connected with the upper end of secondary filter head (6), secondary filter head (6) are connected with reagent bottle (10) through connecting pipe (7), reagent bottle (10) still are connected with solution flow path pipe (8).
2. The reagent solution contamination prevention device for ammonium nitrogen flow analysis according to claim 1, wherein the inside of the protection column body (3) is filled with acidified silica gel (4) and glass fibers (5), and the glass fibers (5) are tiled at the bottom of the protection column body (3).
3. The reagent solution pollution prevention device for ammonium nitrogen flow analysis according to claim 2, wherein the primary filter head (1) and the secondary filter head (6) are needle type online filters, and polyether sulfone filter membranes with pore diameters of 0.40-0.50 μm are arranged inside the primary filter head (1) and the secondary filter head (6).
4. A reagent solution contamination prevention device for ammonium nitrogen flow analysis according to claim 3, wherein a hollow outlet is provided at a top end of the guard column upper cover (2), and the primary filter head (1) is hermetically connected to the guard column upper cover (2) through the outlet.
5. The reagent solution contamination prevention device for ammonium nitrogen flow analysis according to claim 1, 2, 3 or 4, wherein a reagent bottle cap (9) is provided on the reagent bottle (10), the reagent bottle cap (9) is a wide-mouth bottle cap, two through holes are provided on the reagent bottle cap (9), and the connecting pipe (7) and the solution flow path pipe (8) are connected with the reagent bottle (10) through the through holes.
6. The reagent solution contamination prevention device for ammonium nitrogen flow analysis according to claim 5, wherein the connection tube (7) is a silicone rubber tube, and an inner diameter of the connection tube (7) is 1.6mm.
7. A reagent solution contamination prevention device for ammonium nitrogen flow analysis according to claim 6, wherein the height of the protective column body (3) is 10-15mm.
8. The reagent solution contamination prevention device for ammonium nitrogen flow analysis according to claim 7, wherein the guard column upper cover (2) and the guard column main body (3) are both made of polypropylene.
9. The reagent solution contamination prevention device for ammonium nitrogen flow analysis according to claim 8, wherein the reagent bottle cap (9) and the reagent bottle (10) are both made of high-density polyethylene, or the reagent bottle cap (9) and the reagent bottle (10) are both made of polypropylene.
10. The reagent solution pollution prevention device for ammonium nitrogen flow analysis according to claim 5, wherein a mounting sleeve is fixedly connected in a through hole on the reagent bottle cap (9), the solution flow path tube (8) is mounted in the mounting sleeve, and the solution flow path tube (8) is made of polytetrafluoroethylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321415540.7U CN220361204U (en) | 2023-06-06 | 2023-06-06 | Reagent solution pollution prevention device for ammonium nitrogen flow analysis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321415540.7U CN220361204U (en) | 2023-06-06 | 2023-06-06 | Reagent solution pollution prevention device for ammonium nitrogen flow analysis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220361204U true CN220361204U (en) | 2024-01-19 |
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ID=89516025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321415540.7U Active CN220361204U (en) | 2023-06-06 | 2023-06-06 | Reagent solution pollution prevention device for ammonium nitrogen flow analysis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220361204U (en) |
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2023
- 2023-06-06 CN CN202321415540.7U patent/CN220361204U/en active Active
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