CN111751307A - Nutrient salt analyzer - Google Patents
Nutrient salt analyzer Download PDFInfo
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- CN111751307A CN111751307A CN202010591583.5A CN202010591583A CN111751307A CN 111751307 A CN111751307 A CN 111751307A CN 202010591583 A CN202010591583 A CN 202010591583A CN 111751307 A CN111751307 A CN 111751307A
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- 150000003839 salts Chemical class 0.000 title claims abstract description 79
- 235000015097 nutrients Nutrition 0.000 title claims abstract description 53
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 67
- 238000001514 detection method Methods 0.000 claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 44
- 238000002347 injection Methods 0.000 claims abstract description 33
- 239000007924 injection Substances 0.000 claims abstract description 33
- 238000004891 communication Methods 0.000 claims abstract description 24
- 238000006243 chemical reaction Methods 0.000 claims abstract description 14
- 238000002835 absorbance Methods 0.000 claims abstract description 7
- 239000011259 mixed solution Substances 0.000 claims abstract description 5
- 230000000050 nutritive effect Effects 0.000 claims description 28
- 239000007788 liquid Substances 0.000 claims description 16
- 238000010438 heat treatment Methods 0.000 claims description 15
- 230000029087 digestion Effects 0.000 claims description 13
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 8
- 229910052744 lithium Inorganic materials 0.000 claims description 8
- 229910052793 cadmium Inorganic materials 0.000 claims description 5
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims description 5
- 238000013016 damping Methods 0.000 claims description 5
- 229910002651 NO3 Inorganic materials 0.000 claims description 3
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 3
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 2
- 238000004458 analytical method Methods 0.000 description 9
- 239000013535 sea water Substances 0.000 description 9
- 238000005070 sampling Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- 230000002572 peristaltic effect Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000011065 in-situ storage Methods 0.000 description 3
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- 241000238557 Decapoda Species 0.000 description 2
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000012851 eutrophication Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 206010021143 Hypoxia Diseases 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- -1 Polytetrafluoroethylene Polymers 0.000 description 1
- 239000005422 algal bloom Substances 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
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- 238000007599 discharging Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000520 microinjection Methods 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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- 239000005416 organic matter Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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- 230000001105 regulatory effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 235000015170 shellfish Nutrition 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N21/03—Cuvette constructions
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N21/03—Cuvette constructions
- G01N2021/0325—Cells for testing reactions, e.g. containing reagents
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- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
Abstract
The invention discloses a nutrient salt analyzer, which comprises a first controller, a touch screen, a wireless communication module, a waterway board assembly, a solenoid valve assembly, a reagent pipe assembly, an injection pump, a buffer pipe and a colorimetric detection device, wherein the first controller is connected with the first controller through the wireless communication module; the electromagnetic valve assembly, the reagent pipe assembly and the buffer pipe are all connected with the water circuit board assembly; the injection pump is connected with the waterway board assembly and the buffer tube and is used for driving the water sample and the reagent in the reagent tube assembly to enter the buffer tube for mixing reaction and conveying the mixed solution after the reaction to the colorimetric detection device for absorbance detection; the touch screen, the wireless communication module, the waterway board assembly, the electromagnetic valve assembly, the injection pump and the colorimetric detection device are electrically connected with the first controller; the first controller is used for receiving a touch signal of the touch screen to control the water path board assembly, the electromagnetic valve assembly, the injection pump and the colorimetric detection device to automatically operate so as to detect the content of nutrient salts in a water sample, and the wireless communication module transmits data detected by the colorimetric detection device to the terminal.
Description
Technical Field
The invention relates to the technical field of water quality monitoring, in particular to a nutritive salt analyzer.
Background
Nutritive salts are the essential material basis for the growth of marine phytoplankton. The different concentrations and compositions of nutritive salts in seawater affect the primary productivity of the ocean and produce a regulating effect on the community structure of phytoplankton, thereby affecting the structure of the marine ecosystem. In normal seawater, a proper amount of nutritive salt can promote the reproduction and growth of organisms, but excessive nutritive salt can promote the rapid reproduction of some marine organisms, so that dissolved oxygen in seawater is greatly consumed, oxygen deficiency is caused in the seawater, and a great amount of death of fishes, shrimps, crabs and shellfish is caused. The pollution of organic matter and nutrient salts to the ocean is now referred to as "eutrophication". Understanding the spatial and temporal distribution and change of nutritive salt in the ocean is of great significance to understanding the key process of the ocean ecosystem and evaluating and controlling the eutrophication of the ocean water body. Nutritive salts in seawater are essential components for the growth and reproduction of marine phytoplankton, and are also the basis of marine primary productivity and the food chain. Therefore, the content of nutritive salt in seawater is an important parameter for marine ecological environment monitoring, and is one of marine routine projects for marine monitoring.
The conventional method for measuring the nutritive salt in seawater is based on-site sampling of a survey ship and then measuring in a laboratory. The method has the defects of poor real-time performance, waste of manpower, financial resources, time and the like, the sample is easy to be polluted, and the measurement error caused in the processes of collection, pretreatment, loading, transportation and the like can reach-20% to + 45%; the inability to provide continuous data; the rapid change of the nutrient salt concentration caused by intermittent events such as rainfall, algal bloom outbreak and the like is not easy to monitor. The last decades of marine monitoring studies have demonstrated that the traditional methods have not fully satisfied the real world needs. The problems that the existing seawater nutrient salt analyzer is complex in process, high in material consumption, offline analysis, incapable of meeting the requirement of low-content measurement and the like are urgently needed to be solved.
In order to solve the defects of the traditional seawater nutrient salt detection method, in-situ analyzers for some nutrient salts are developed on the market, continuous and automatic sampling and nutrient salt content analysis are realized through motor drive, a microprocessor, a selection multi-channel valve, an injector and the like, and the online analysis of various components can be realized. However, the in-situ analyzer is only suitable for in-situ online monitoring application occasions such as buoys and shore bases, does not have the on-site use capability of users, cannot realize data network transmission, needs professional technicians for product use and maintenance, and is very inconvenient to use.
Therefore, the development of the nutrient salt analyzer which can support field use, can remotely transmit detection data in real time, is simple and convenient to operate and has accurate detection data is of great significance.
Disclosure of Invention
In view of this, the present invention provides a nutritive salt analyzer, which can be used in the field, can remotely transmit the detection data in real time, and has the advantages of simple operation and accurate detection data.
In order to achieve the purpose, the invention provides a nutrient salt analyzer for detecting the content of nutrient salt in a water sample, which comprises a first controller, a touch screen, a wireless communication module, a waterway board assembly, a solenoid valve assembly, a reagent pipe assembly, an injection pump, a buffer pipe and a colorimetric detection device; the electromagnetic valve assembly, the reagent pipe assembly and the buffer pipe are all connected with the waterway plate assembly; the injection pump is connected with the water path plate component and the buffer tube and is used for driving a water sample and a reagent in the reagent tube component to enter the buffer tube for mixing reaction and conveying a mixed solution after the reaction to the colorimetric detection device for absorbance detection;
the touch screen, the wireless communication module, the waterway board assembly, the solenoid valve assembly, the injection pump and the colorimetric detection device are all electrically connected with the first controller; the first controller is used for receiving the touch signal of touch screen is in order to control the water route board subassembly the solenoid valve subassembly the syringe pump and colorimetric detection device automatic operation is in order to detect the nutritive salt content of water sample, wireless communication module is used for with data transfer to the terminal that colorimetric detection device detected.
Compared with the prior art, the invention has the beneficial effects that:
the nutritive salt analyzer provided by the invention can be suitable for field detection, and is electrically connected with a first controller through the arrangement of a touch screen, a wireless communication module, a water path board assembly, an electromagnetic valve assembly, an injection pump and a colorimetric detection device, wherein the first controller receives a touch signal of the touch screen to control the water path board assembly, the electromagnetic valve assembly, the injection pump and the colorimetric detection device to automatically operate to detect the nutritive salt content of a water sample, namely, an operator only needs to click a plurality of buttons on the touch screen, the nutritive salt analyzer can automatically detect the nutritive salt content of the water sample, the operation is very simple, and even technicians without professional knowledge can use the nutritive salt analyzer to detect the water sample; the wireless communication module is arranged to transmit the data detected by the colorimetric detection device to the terminal in real time, so that a user can inquire and acquire the data in real time; the injection pump is arranged for carrying out quantitative liquid conveying, the minimum sample injection amount of the injection pump is about 1ul, and the error of the sampling precision of the injection pump can be less than or equal to 1 percent, so that the accuracy of the reagent proportioning can be ensured even if micro-sampling is carried out, and the stability and the precision of data are difficult; through the trace sampling that sets up the syringe pump, the consumption of nutritive salt analysis appearance reagent and pure water is few, and the waste liquid volume of production is low, therefore, need not to carry a large amount of reagents, and a large amount of pure water is to the testing field, can not appear a large amount of waste water problem of difficult processing yet.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic block diagram of a nutrient salt analyzer provided by an embodiment of the present invention;
FIG. 2 is a schematic diagram of a nutrient salt analyzer provided in an embodiment of the present invention;
FIG. 3 is an exploded schematic view of a nutrient salt analyzer provided by an embodiment of the present invention;
FIG. 4 is another exploded schematic view of a nutrient salt analyzer provided by an embodiment of the invention;
FIG. 5 is a schematic view of a partial structure of a nutrient salt analysis provided by an embodiment of the invention from a first perspective;
FIG. 6 is a schematic view of a second perspective of the partial structure of a nutrient salt assay provided by an embodiment of the invention;
FIG. 7 is an exploded schematic view of a reagent tube assembly provided by an embodiment of the present invention;
FIG. 8 is a schematic structural diagram of an intermediate housing provided in accordance with an embodiment of the present invention;
FIG. 9 is an enlarged view of a portion of FIG. 8 at E;
fig. 10 is an exploded view of a partial structure of a nutrient salt analyzer provided in an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
Referring to fig. 1 to 6, an embodiment of the present invention discloses a nutrient salt analyzer 100, which includes a first controller 11, a touch screen 12, a wireless communication module 13, a waterway board assembly 14, an electromagnetic valve assembly 15, a reagent pipe assembly 16, an injection pump 17, a buffer pipe 18, a colorimetric detection device 19, a main board 31, and a second controller 32; the solenoid valve assembly 15, the reagent tube assembly 16 and the buffer tube 18 are all connected with the waterway plate assembly 14; the injection pump 17 is connected with the waterway board assembly 14 and the buffer pipe 18, the injection pump 17 is used for driving the water sample and the reagent in the reagent pipe assembly 16 to enter the buffer pipe 18 for mixing reaction, and the mixed solution after the reaction is conveyed to the colorimetric detection device 19 for absorbance detection; the second controller 32 is electrically connected to the syringe pump 17 through the main board 31, and the second controller 32 is used for controlling the operation of the syringe pump 17.
The touch screen 12, the wireless communication module 13, the waterway board assembly 14, the electromagnetic valve assembly 15, the injection pump 17 and the colorimetric detection device 19 are electrically connected with the first controller 11 through the main board 31; the first controller 11 is configured to receive a touch signal of the touch screen 12 to control the waterway board assembly 14, the solenoid valve assembly 15, the injection pump 17, and the colorimetric detection device 19 to automatically operate to detect the nutrient salt content of the water sample, and optionally, the first controller 11 employs a PLC module. The wireless communication module 13 is used for transmitting the data detected by the colorimetric detection device 19 to the terminal.
The solenoid valve assembly 15 includes a plurality of solenoid valves, each of which is connected to one port of the waterway plate assembly 14, and the first controller 11 controls on/off of each of the solenoid valves according to a preset setting.
For example, the wireless communication module 13 may transmit the detected data to the cloud platform 33, and the user queries and obtains the detected data through an APP on the terminal 34 (e.g., a mobile phone, a laptop, a tablet, etc.). In some optional embodiments, the wireless communication module 13 further includes location information of the nutrient salt analyzer 10.
After the technical scheme is adopted, the water sample nutrient salt analyzer can be suitable for field detection, and is characterized in that the touch screen 12, the wireless communication module 13, the waterway board assembly 14, the electromagnetic valve assembly 15, the injection pump 17 and the colorimetric detection device 19 are electrically connected with the first controller 11, the first controller 11 receives a touch signal of the touch screen 12 to control the waterway board assembly 14, the electromagnetic valve assembly 15, the injection pump 17 and the colorimetric detection device 19 to automatically operate to detect the nutrient salt content of the water sample, namely, an operator only needs to click a plurality of buttons on the touch screen 12, the nutrient salt analyzer 10 can automatically detect the nutrient salt content of the water sample, the operation is very simple, and even a technician without professional knowledge can use the nutrient salt analyzer to detect the water sample; by arranging the wireless communication module 13 to transmit the data detected by the colorimetric detection device 19 to the terminal in real time, the user can inquire and acquire the data in real time.
The conventional nutrient salt analyzer adopts a peristaltic pump to carry out quantitative conveying of liquid, when the peristaltic pump is in a sample volume of 2ml, the sampling precision error of the peristaltic pump can be less than or equal to 1%, when the sample volume of the peristaltic pump is within 1ml, the sampling precision error can rise, the error increase leads to the accuracy reduction of reagent proportioning, and the data stability and precision are difficult to guarantee. In this embodiment, the injection pump 19 is provided to quantitatively convey the liquid, the minimum sample volume of the injection pump 19 is about 1ul, and the error of the sampling precision can be less than or equal to 1%, so that even if the sample is micro-injected, the accuracy of the reagent ratio can be ensured, and the stability and precision of the data are difficult. Further, through the microinjection of setting up the syringe pump, the consumption of nutritive salt analysis appearance reagent and pure water is few, and the waste liquid volume of production is low, therefore need not to carry a large amount of reagents, and a large amount of pure water is to the testing field, also can not appear the difficult problem of handling of a large amount of waste water.
In an alternative embodiment, the nutrient salt analyzer 100 further includes an ultraviolet digestion tube 20, which includes an ultraviolet lamp source and an ultraviolet lamp tube, the ultraviolet lamp tube is connected to the waterway board assembly 14, the ultraviolet lamp source is mounted on the ultraviolet lamp tube, and the inner side wall of the ultraviolet lamp tube is provided with a reflective layer.
Illustratively, the ultraviolet lamp source adopts a cold cathode low-voltage ultraviolet lamp source, the wavelength is 254 nanometers, the ultraviolet lamp tube adopts a high ultraviolet light transmission Polytetrafluoroethylene (PTFE) tube, the reflecting layer adopts an aluminum film, and the aluminum film can effectively improve the reflecting capacity of ultraviolet rays and infrared rays, and plays a certain heat insulation role while improving the ultraviolet ray utilization rate. The ultraviolet ray digestion tube 21 provided by the embodiment can operate under the conditions of low pressure (less than 24V) and power greater than 3W, and the digestion rate can reach more than 80%.
In an alternative embodiment, the nutrient salt analyzer 100 further comprises a first high-pressure valve 21, a second high-pressure valve 22 and a heating pipe 23, the first high-pressure valve 21 is connected with one end of the heating pipe 23 and the waterway plate assembly 14, the second high-pressure valve 22 is connected with the other end of the heating pipe 23 and the waterway plate assembly 14, and the injection pump 19 drives the liquid in the ultraviolet digestion pipe 20 into the heating pipe 23 for reaction. The first high pressure valve 21 and the second high pressure valve 22 are used to provide the necessary pressure for the liquid to react in the heating pipe 23. The heating pipe 23 can improve the quick response capability of the liquid, and further accelerate the analysis efficiency of the water sample.
In an optional embodiment, the nutritive salt analyzer 100 further includes a power supply module 24, the power supply module is used for supplying power to the nutritive salt analyzer 100, the power supply module 24 may be an external power supply or an internal power supply module, and is preferably a lithium battery pack, and the lithium battery pack is electrically connected to the first controller 11. By arranging the power supply module and adopting the lithium battery pack, the use occasion of the nutritive salt analyzer 100 is not limited by regions.
In an alternative embodiment, the nutritive salt analyzer 100 further comprises a housing 25, the housing 25 comprises an upper shell 251, a middle shell 252, and a lower shell 253, the lower shell 253 and the middle shell 252 enclose to form a first chamber, the upper shell 251 and the middle shell 252 enclose to form a second chamber, and the first controller 11, the wireless communication module 13, the waterway board assembly 14, the solenoid valve assembly 15, the reagent pipe assembly 16, the syringe pump 17, the buffer pipe 18, and the colorimetric detection device 19 are all disposed in the first chamber; the middle housing 252 has a first window 2521, and the touch screen 12 is partially exposed in the second cavity through the first window 2521, and the touch screen 12 is disposed in an inclined manner. By arranging the touch screen 12 in an inclined manner, the operation personnel can conveniently watch the touch screen, the human engineering is met, and exemplarily, the inclined angle of the touch screen 12 is any angle within the range of 10-45 degrees.
In an optional embodiment, the outer surface of the housing 25 is subjected to powder spraying treatment, and the outer surface subjected to powder spraying treatment is good in contact texture, so that the user experience can be improved.
In an alternative embodiment, the housing 25 is made of engineering ABS plastic, which is light and does not increase the weight of the device, and moreover, the ABS plastic has a good waterproof effect, so that the nutrient salt analyzer 100 can be used in places where water is needed.
Referring to fig. 6-7, in an alternative embodiment, the nutrient analyzer 100 further includes a reagent chamber 26 mounted on the lower housing 253, the top of the reagent chamber 26 is open, the middle housing 252 further has a second window 2522, and the reagent tube assembly 16 is placed in the reagent chamber 26 through the second window 2522. The reagent tube assembly 16 may be placed entirely through the second window 2522 into the reagent cartridge 26 for ease of access.
In an alternative embodiment, the reagent tube assembly 16 includes a tube rack 161 and a plurality of reagent tubes 162, the tube rack 161 is provided with a plurality of openings 1611, the reagent tubes 162 include reagent tube bodies 1621 and supporters 1622 disposed on top of the reagent tube bodies 1621, the reagent tube bodies 1621 pass through the openings 1611, and the supporters 1622 are clamped at the edge of the openings 1611.
In an alternative embodiment, the profile of the opening 1611 is trapezoidal, the cross-sectional profiles of the reagent tube 1621 and the holder 1622 are both trapezoidal, the plurality of holders 1622 are arranged in rows, and the plurality of holders face in a positive-negative alternating arrangement, with the trapezoidal profile facing in an increasing direction or a decreasing direction. With this design, when the plurality of supporting portions 1622 are arranged in a row, the surfaces between the supporting portions 1622 and the supporting portions 1622 can be attached to each other, so that the entire row of reagent tubes 162 is not easily shaken, and the reagent tubes 162 can be stably accommodated in the reagent chamber 26.
Referring to fig. 8-9, in an alternative embodiment, the nutrient salt analyzer 100 further includes a reagent chamber cover 27 and a damper shaft 28, wherein the reagent chamber cover 27 is connected to the middle housing 252 or the lower housing 253 via the damper shaft 28. Through setting up reagent storehouse lid 27 and being connected with middle casing 252 or lower casing 253 through damping axle 28, like this, reagent storehouse lid 27 can be fixed at the angle of predetermineeing after opening, also opens the open-ended reagent storehouse lid 27 and can regard as the place the platform to use, avoids other parts such as water sample, pure water to put on scene ground, receives the pollution, influences the testing result.
In an alternative embodiment, the reagent chamber cover 27 is connected to the middle housing 252, for example, a mounting portion 2523 is convexly provided on a side of the middle housing 252 facing the upper housing 251, the damping shaft 28 is mounted on the mounting portion 2523, and the reagent chamber cover 27 is rotatably connected to the damping shaft 28.
Referring again to fig. 5, in an alternative embodiment, the nutrient analyzer 100 further includes a cadmium column 29, the cadmium column 29 being connected to two ports of the waterway plate assembly 14, the cadmium column 29 being configured to reduce nitrate to nitrite.
In an alternative embodiment, the colorimetric detection device 19 includes a cuvette, a light source, a coupling lens and a photoelectric converter, the light source and the coupling lens are respectively disposed on two opposite sides of the cuvette, the photoelectric converter is connected to the first controller 11 and disposed at a light emitting end of the coupling lens, and the cuvette is connected to one port of the waterway board assembly.
In an optional embodiment, the light source adopts a multi-wavelength LED light source, and the wavelength can be switched to detect different nutrient salt types, and the nutrient salt analyzer provided by this embodiment can be used for analyzing at least four nutrient salts, namely nitrate, nitrite, ammonia nitrogen and phosphate.
Referring to fig. 5-6 and 10, in an alternative embodiment, the nutritive salt analyzer 100 further includes a loading board 30, the loading board 30 is mounted on the bottom shell 253, the loading board 30 is substantially rectangular, and the main board 31, the first controller 11, the touch screen 12, the wireless communication module 13, the waterway board assembly 14, the solenoid valve assembly 15, the syringe pump 17, the ultraviolet digestion tube 20, the heating tube 23, the lithium battery pack 24, the first high-pressure valve 21, the second high-pressure valve 22, the reagent chamber 26, and the colorimetric detection device 19 are arranged on the loading board 30 as follows:
the carrier plate 30 is defined by a first imaginary line S along the length direction X1And a second imaginary line S in the width Y direction2The LED display panel is divided into a first area A, a second area B, a third area C and a fourth area D, wherein the first area A and the second area B are arranged along the length direction, the third area C and the fourth area D are arranged along the length direction, the first area A and the third area C are arranged along the width direction, and the second area B and the fourth area D are arranged along the width direction. The wireless communication module 13 and the lithium battery pack 24 are arranged in parallel in the longitudinal direction X in the first region a. A reagent cartridge 26 is provided in the second zone B, and the reagent tube assembly 16 is disposed within the reagent cartridge 26. The main board 31 is disposed in the third area C, the first controller 11, the ultraviolet digestion tube 20 and the heating tube 23 are disposed on one side of the main board 31 opposite to the bearing board 30, and the ultraviolet digestion tube 20 and the heating tube 23 are juxtaposed in the width direction Y. The electromagnetic valve assembly 15, the waterway plate assembly 14, the first high-pressure valve 21, the second high-pressure valve 22 and the colorimetric detection device 19 are arranged in the fourth area D, and the electromagnetic valve assembly 15 and the second area DA high pressure valve 21 and a second high pressure valve 22 are arranged in parallel in the length direction X, the waterway plate assembly 14 is disposed on the side of the electromagnetic valve assembly 15 away from the bearing plate 30, and the colorimetric detection device 19 is arranged in parallel with the first high pressure valve 21 and the second high pressure valve 22 in the width direction Y. The injection pump 17 is disposed between the lithium battery pack 24 and the main board 31, and the second controller 32 is mounted at the rear end of the injection pump 17.
By adopting the layout mode, the whole nutrient salt analyzer 100 is compact in structure, small in volume of less than 0.01 cubic meter and very convenient to carry.
In an alternative embodiment, the detection method of the nutrient salt analyzer 100 is as follows:
an operator collects a water sample and puts the water sample into a sample cup, one end of a conduit on the nutrient salt analyzer 100 is inserted into the sample cup, and simultaneously the preparation of a reagent, the preparation of pure water and the preparation of a waste liquid collecting device are confirmed;
starting the nutrient salt analyzer 100, and setting single nutrient salt parameter analysis or multiple nutrient salt parameter analysis;
after the detection is started, the injection pump 19 pumps pure water or a water sample to carry out system rinsing, and the rinsing times are preset;
after the wetting, the injection pump 19 extracts a water sample and performs initial absorbance detection;
subsequently, the syringe pump 19 injects a water sample into the buffer tube 18 and draws reagent one into the buffer tube 18 for mixing; the first high-pressure valve 21 conveys the liquid in the buffer tube 18 to the ultraviolet digestion tube 20 for reaction for a preset time; the second high-pressure valve 22 conveys the liquid in the ultraviolet digestion tube 20 to the heating tube 23 for constant-temperature reaction for a preset time;
after the reaction is finished, the injection pump 19 pumps the liquid in the heating pipe 23 into the colorimetric detection device 19 to obtain the absorbance of the mixed liquid; analyzing the concentration value of the nutrient salt according to the obtained absorbance value, and uploading the concentration value to a remote terminal through a wireless communication module 13; and discharging the mixed solution to a waste liquid collecting bag to finish detection.
While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A nutrient salt analyzer is used for detecting the content of nutrient salts in a water sample and is characterized by comprising a first controller, a touch screen, a wireless communication module, a waterway board assembly, a solenoid valve assembly, a reagent pipe assembly, an injection pump, a buffer pipe and a colorimetric detection device; the electromagnetic valve assembly, the reagent pipe assembly and the buffer pipe are all connected with the waterway plate assembly; the injection pump is connected with the water path plate component and the buffer tube and is used for driving a water sample and a reagent in the reagent tube component to enter the buffer tube for mixing reaction and conveying a mixed solution after the reaction to the colorimetric detection device for absorbance detection;
the touch screen, the wireless communication module, the waterway board assembly, the solenoid valve assembly, the injection pump and the colorimetric detection device are all electrically connected with the first controller; the first controller is used for receiving the touch signal of touch screen is in order to control the water route board subassembly the solenoid valve subassembly the syringe pump and colorimetric detection device automatic operation is in order to detect the nutritive salt content of water sample, wireless communication module is used for with data transfer to the terminal that colorimetric detection device detected.
2. The nutritive salt analyzer of claim 1, further comprising an ultraviolet digestion tube, wherein the ultraviolet digestion tube comprises an ultraviolet lamp source and an ultraviolet lamp tube, the ultraviolet lamp tube is connected with the waterway plate assembly, the ultraviolet lamp source is mounted on the ultraviolet lamp tube, a reflective layer is arranged on the inner side wall of the ultraviolet lamp tube, and the injection pump drives the liquid in the buffer tube to enter the ultraviolet digestion tube for reaction.
3. The nutrient salt analyzer of claim 2, further comprising a first high pressure valve, a second high pressure valve and a heating pipe, wherein the first high pressure valve is connected with one end of the heating pipe and the water path board assembly, the second high pressure valve is connected with the other end of the heating pipe and the water path board assembly, and the injection pump drives liquid in the ultraviolet digestion pipe to enter the heating pipe for reaction.
4. The nutritive salt analyzer of claim 1, further comprising a lithium battery pack electrically connected to the first controller, the lithium battery pack for powering the nutritive salt analyzer.
5. The nutrient salt analyzer of claim 1, further comprising an outer housing comprising an upper housing, a middle housing, and a lower housing, the lower housing and the middle housing enclosing a first chamber, the upper housing and the middle housing enclosing a second chamber, the first controller, the wireless communication module, the waterway board assembly, the solenoid valve assembly, the reagent pipe assembly, the syringe pump, the buffer tube, and the colorimetric detection device all being disposed within the first chamber;
the middle shell is provided with a first window, the touch screen is partially exposed in the second cavity through the first window, and the touch screen is obliquely arranged.
6. The nutrient salt analyzer of claim 5, further comprising a reagent chamber mounted to the lower housing, wherein the top of the reagent chamber is open, the middle housing further defines a second window, and the reagent tube assembly is disposed in the reagent chamber through the second window.
7. The nutritive salt analyzer of claim 6, wherein the reagent tube assembly comprises a tube frame and a plurality of reagent tubes, the tube frame is provided with a plurality of openings, the reagent tubes comprise reagent tubes and bearing parts arranged on the tops of the reagent tubes, the reagent tubes penetrate through the openings, and the bearing parts are clamped on the edges of the openings.
8. The nutrient salt analyzer of claim 7, wherein the opening has a trapezoidal profile, the receptacles have a trapezoidal cross-sectional profile, a plurality of the receptacles are arranged in a row, and a plurality of the receptacles are alternately oriented in a positive direction and a negative direction.
9. The nutrient salt analyzer of claim 5, further comprising a reagent cartridge cover and a damping shaft, the reagent cartridge cover being coupled to the middle housing or the lower housing via the damping shaft.
10. The nutrient salt analyzer of claim 1, further comprising a cadmium column connected to two ports of the waterway plate assembly, the cadmium column configured to reduce nitrate to nitrite.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010591583.5A CN111751307A (en) | 2020-06-24 | 2020-06-24 | Nutrient salt analyzer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010591583.5A CN111751307A (en) | 2020-06-24 | 2020-06-24 | Nutrient salt analyzer |
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| CN111751307A true CN111751307A (en) | 2020-10-09 |
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| CN202010591583.5A Pending CN111751307A (en) | 2020-06-24 | 2020-06-24 | Nutrient salt analyzer |
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| CN112255184A (en) * | 2020-10-15 | 2021-01-22 | 深圳市朗诚科技股份有限公司 | Intelligent water quality detection device |
| CN115356327A (en) * | 2022-10-19 | 2022-11-18 | 北京市农林科学院智能装备技术研究中心 | Nutrient solution detection device, method and system |
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