CN219799244U - Water quality detection box - Google Patents
Water quality detection box Download PDFInfo
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- CN219799244U CN219799244U CN202222473342.8U CN202222473342U CN219799244U CN 219799244 U CN219799244 U CN 219799244U CN 202222473342 U CN202222473342 U CN 202222473342U CN 219799244 U CN219799244 U CN 219799244U
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- Prior art keywords
- test paper
- water quality
- detection
- paper
- electromagnetic valve
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 100
- 238000001514 detection method Methods 0.000 title claims abstract description 78
- 238000012360 testing method Methods 0.000 claims abstract description 74
- 239000007788 liquid Substances 0.000 claims abstract description 29
- 230000007246 mechanism Effects 0.000 claims abstract description 10
- 238000012372 quality testing Methods 0.000 claims description 18
- 239000002699 waste material Substances 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 11
- 239000002351 wastewater Substances 0.000 claims description 5
- 238000004804 winding Methods 0.000 claims 2
- 238000013461 design Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 229910001385 heavy metal Inorganic materials 0.000 description 4
- 239000013049 sediment Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 239000003651 drinking water Substances 0.000 description 3
- 235000020188 drinking water Nutrition 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 238000009360 aquaculture Methods 0.000 description 2
- 244000144974 aquaculture Species 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000012085 test solution Substances 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 1
- 229910021607 Silver chloride Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 1
- 229910001961 silver nitrate Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 238000004448 titration Methods 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 provides a water quality detection box, which comprises a detection cavity, wherein the detection cavity is provided with a liquid inlet pipeline, a microfluidic pump is arranged on the liquid inlet pipeline, the liquid inlet pipeline forms a sample dripping port through the microfluidic pump, and one side of the sample dripping port is provided with a color identification sensor; the detection test paper is arranged below the sample dropping port, one end of the detection test paper is provided with a driving mechanism, and the driving mechanism drives the detection test paper to move to the lower side of the color identifier after the sample dropping is carried out through the sample dropping port. The water quality detection box is based on a microfluidic technology, and is small in size; by the built-in micro-flow pump and the color recognition sensor, rapid water quality detection can be realized; the modular design integrates a color recognition sensor; the existing pipeline can be directly accessed, and the flow is not affected.
Description
Technical Field
The utility model belongs to the technical field of water quality detection, and particularly relates to a water quality detection box.
Background
Along with the development of society, people pay more and more attention to the health of drinking water, and a certain doubt exists on whether the quality of water is qualified or not. The equipment available in the market at present for household water quality detection almost has a single-parameter test solution box or a test pen, and the multifunctional water quality detector is a large and expensive laboratory instrument for laboratory research or some aquaculture. The water quality detector for aquaculture adopts a spectrophotometric photoelectric colorimetric principle, applies reagents, takes several minutes after a water sample is put into the reagents for reaction, digitally displays the equivalent values of ammonia nitrogen, dissolved oxygen and nitrite, and is packaged into a dripping bottle or vacuum package, thereby being suitable for quantitative measurement in a laboratory or field. The defects are that the detection is complex, the instrument is expensive, and the household use is not facilitated.
At present, the method for detecting chloride ions in drinking water adopts a chemical titration method, nitric acid is dripped into a test solution, if sediment or gas is generated, no sediment or gas is generated, and if sediment is generated, filtering is carried out. And then adding excessive silver nitrate into the solution dropwise until no sediment is generated. And (5) filtering. And drying the obtained precipitate, and measuring the mass of the precipitate, namely the mass of AgCl, so as to obtain the mass and the mass of the chlorine element contained in the obtained wastewater, namely the mass and the mass of the chlorine ion. The method is only suitable for laboratory use, and the detection process is quite complex.
In the prior art, a water quality detection box convenient for realizing household water quality detection is lacking. The detection process is quick and efficient, and the detection test paper is easy to replace.
Disclosure of Invention
The utility model aims to provide a water quality detection box capable of conveniently and rapidly detecting water quality.
The utility model provides a water quality detection box, which comprises a detection cavity, wherein the detection cavity is provided with a liquid inlet pipeline, a microfluidic pump is arranged on the liquid inlet pipeline, the liquid inlet pipeline forms a sample dripping port through the microfluidic pump, and one side of the sample dripping port is provided with a color identification sensor; the detection test paper is arranged below the sample dropping port, one end of the detection test paper is provided with a driving mechanism, and the driving mechanism drives the detection test paper to move to the lower side of the color identifier after the sample dropping is carried out through the sample dropping port.
Preferably, the test paper is arranged in a test paper detection box, the test paper detection box comprises an untested paper storage cavity and a tested paper storage cavity which are arranged side by side, one end of the untested test paper is arranged in the untested paper storage cavity in a reel manner, and the other end of the untested test paper extends from an outlet of the untested paper storage cavity to the tested paper storage cavity to form a tested test paper reel.
Preferably, the test paper detection box is detachably arranged on the water quality detection box.
Preferably, a waste water box is arranged below the tested paper storage cavity.
Preferably, the untested paper storage cavity is provided with a sealing strip, the sealing strip is of an elastic structure and is arranged above the outlet of the untested paper storage cavity.
Preferably, the driving mechanism comprises a second test paper driving motor; and the second test paper driving motor drives the tested test paper reel.
Preferably, the driving mechanism further comprises a first test paper driving motor, and the first test paper driving motor drives the non-tested test paper reel and rotates in the same direction with the second test paper driving motor.
Preferably, the color recognition sensor is arranged close to the sample dropping opening to be 1cm plus or minus 0.1cm.
Preferably, the water quality detection box further comprises a linear motor, and the linear motor is arranged above the sealing strip.
Preferably, the liquid inlet pipeline forms a sample dripping pipeline and a waste liquid pipeline after passing through the microfluidic pump, the sample dripping pipeline is provided with a first electromagnetic valve, and the waste liquid pipeline is provided with a second electromagnetic valve; the waste liquid pipeline is connected with the waste liquid box through a second electromagnetic valve.
The water quality detection box is based on a microfluidic technology, and is small in size; by the built-in micro-flow pump and the color recognition sensor, rapid water quality detection can be realized; the modular design integrates a color recognition sensor; the existing pipeline can be directly accessed, and the flow is not affected.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.
FIG. 1 is a schematic diagram of a water quality testing module according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram of a pressure reducing solenoid valve of a water quality testing module according to an embodiment of the present utility model;
FIG. 3 is a schematic view of a water quality testing cassette of a water quality testing module according to an embodiment of the present utility model with a cover removed;
FIGS. 4 and 5 are schematic views of a water quality testing cassette of a water quality testing module according to an embodiment of the present utility model, with a cassette body and a cover removed;
FIG. 6 is a schematic diagram of a test paper of a water quality testing module according to an embodiment of the present utility model;
FIG. 7 is a schematic representation of conventional water quality indicators and limit comparisons;
fig. 8 is a schematic structural diagram of the test paper cartridge using the novel test paper.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.
In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, in the description of the present utility model, the meaning of "a plurality" means two or more, unless specifically defined otherwise.
The utility model provides a water quality detection module which is suitable for heavy metal detection of household and office drinking water pipelines.
As shown in fig. 1, the water quality detection module includes a connection water pipe 10, an explosion-proof solenoid valve 20, a pressure-reducing solenoid valve 30, and a water quality detection box 40, which are sequentially connected. One end of the connecting water pipe 10 is connected with a water pipe of a required detection area, and the other end of the connecting water pipe 10 is connected with an explosion-proof electromagnetic valve 20.
After the valve of the explosion-proof electromagnetic valve 20 is electrified and opened, water flow can flow through the explosion-proof electromagnetic valve, so that the phenomenon of water pipe explosion under the sudden condition of excessive water pipe pressure is prevented.
After the valve of the pressure reducing solenoid valve 30 is opened by energization, water flows through the valve to reduce the water pressure from the normal water pressure to the water pressure required before the tap water enters the water quality detecting box 40.
In other embodiments, only the connection water pipe 10, the pressure reducing solenoid valve 30, and the water quality detecting cartridge 40 may be provided. The one end of the connecting water pipe 10 is connected with a water pipe of a required detection area, the pressure reducing electromagnetic valve 30 is provided with a first connecting end and connected with the connecting water pipe, the other end of the pressure reducing electromagnetic valve is provided with a second connecting end and connected with a liquid inlet pipeline of the water quality detection box, and the inner diameter of the first connecting end is not smaller than that of the second connecting end. The first connecting end is generally larger in inner diameter than the second connecting end, so that the pressure reduction is more smooth.
In this embodiment, optionally, the explosion-proof electromagnetic valve 20 and the pressure reducing electromagnetic valve 30 are provided with marks of water flow detection directions, and the arrows shown in fig. 1 are marks of water flow detection directions on the explosion-proof electromagnetic valve 20 and the pressure reducing electromagnetic valve 30. The installation is convenient for the user.
As shown in fig. 2, the pressure reducing solenoid valve 30 includes a first connection end 31 connected to the explosion-proof solenoid valve 20, a second connection end 32 connected to the water quality detecting box 40, and a solenoid valve main body 33 connected to both the first connection end 31 and the second connection end 32, wherein an inner diameter of the first connection end 31 is not less than 2 times an inner diameter of the second connection end 32. In other embodiments, the first connecting end 31 is not smaller than the inner diameter of the second connecting end.
During each detection, the explosion-proof electromagnetic valve 20 is opened for a period of time in advance, and the inner diameter of the first connecting end 31 of the pressure-reducing electromagnetic valve 30 is larger than the inner diameter of the second connecting end 32 of the pressure-reducing electromagnetic valve 30, so that water in a waterway (namely the first connecting end 31) in front of the pressure-reducing electromagnetic valve 30 is fully mixed, the extracted water sample is ensured to be the latest water quality, and the water quality entering from the second electromagnetic valve 30 is the extracted water sample.
During detection, when the detection is started, water passes through the connecting water pipe 10, the explosion-proof electromagnetic valve 20 and the pressure-reducing electromagnetic valve 30 in sequence, and then enters the water quality detection box 40 for heavy metal detection.
As shown in fig. 3 to 6, the water quality testing cartridge 40 includes a cartridge body 41, a cover body 42, a waste liquid cartridge 43, a first test paper driving motor 44, an untested paper storage chamber 491 connected to the first test paper driving motor 44 and having a circular shape, a second test paper driving motor 45, a tested paper storage chamber 492 connected to the second test paper driving motor 45 and having a roll shape, a connection test paper 493 connected between the untested paper storage chamber 491 and the tested paper storage chamber 492, a first electromagnetic valve 46, a second electromagnetic valve 47 connected to the first electromagnetic valve 46 and connected to the waste liquid cartridge 43, a micro-fluid pump 48 connected between the first electromagnetic valve 46 and the second electromagnetic valve 47 and connected to the pressure reducing electromagnetic valve 30, a sample drop port 49 connected to the first electromagnetic valve 46 and located on the connection test paper 493, a linear motor 494, and a sealing strip 498 connected to the linear motor 494, wherein the sealing strip can be made of soft, elastic material can be used to move up and down to seal the sealing strip with the outer side wall of the cavity to be tested, so that water vapor is prevented from entering; the water quality detection box also comprises a color recognition sensor 495 which is fixed on the inner wall of the box body 41 and is positioned above the connection test paper 493; wherein the sealing strip seals the untested paper storage cavity 491; the color recognition sensor 495 is disposed near the sample drop port 49.
In other embodiments, the test strip cartridge 50 may be formed as a single removable cartridge that is positioned within the water quality testing cartridge such that the test strip cartridge may be replaced directly when the test strip reel is exhausted. The test paper detection box can be internally provided with a dry reagent, so that inaccurate detection results caused by the fact that water vapor enters the untested paper storage cavity and the tested paper storage cavity are prevented.
The micro-flow pump 48 is also provided with a water flow detection direction mark, and the arrow shown in fig. 5 is a water flow detection direction mark on the micro-flow pump 48.
In this embodiment, the first electromagnetic valve 46 is horizontal, the second electromagnetic valve 47 is vertical, and in other embodiments, the first electromagnetic valve 46 and the second electromagnetic valve 47 may be disposed at other positions to achieve the same function.
The connection paper 493 is actually a test paper, but in order to better explain the working principle of the paper box, the non-test paper roll 4911, the connection paper 493 and the tested paper roll 4912 are described in sections, the connection paper 493 is horizontal, and the first test paper driving motor 44 drives the non-test paper roll 4911 in the non-test paper storage cavity 491 to move to the position where the connection paper 493 is located to form the connection paper 493; when tested, the connecting paper 493 is driven by the second paper drive motor 45 and rolled into the tested paper storage chamber 492 to form a tested paper roll 4912. The walls of the tested paper storage chamber extend below the sample drop opening 49 and streamline to the bottom wall of the tested paper storage chamber, a waste water box 499 is arranged below the bottom wall 492 of the tested paper storage chamber, and when the sample is dropped, if redundant liquid exists, the redundant liquid can drop to the walls of the tested paper storage chamber below the sample drop opening through the test paper, and remain to the bottom wall of the tested paper storage chamber along the walls, and enter the waste water box 499. Preventing continuous water accumulation in the test paper detection box.
The waste liquid box 43, the first test paper driving motor 44, the untested paper storing cavity 491, the second test paper driving motor 45, the tested paper storing cavity 492, the connection test paper 493, the first electromagnetic valve 46, the second electromagnetic valve 47, the connection of the connection test paper 493, the sample dropping opening 49, the linear motor 494, the sealing strip and the color recognition sensor 495 are all positioned in the box body 41, and the cover body 42 covers the box body 41.
After the water sample is extracted, the explosion-proof electromagnetic valve 20 and the decompression electromagnetic valve 30 are closed; then the first electromagnetic valve 46 is opened and the second electromagnetic valve 47 is closed, and the micro-flow pump 48 drives the extracted water sample to the sample dripping port 49 above the connection test paper 493 through the first electromagnetic valve 46; after the sample dripping is completed, the first electromagnetic valve 46 is closed, the second electromagnetic valve 47 is opened, and the microfluidic pump 48 discharges the water sample which does not participate in detection in the pipeline into the waste liquid box 43.
When detection is started, the first test paper driving motor 44 drives the non-test paper reel 4911 in the non-test paper storage cavity 491 to rotate, a water sample to be detected is dripped into a reagent strip on the connection test paper 493 from the sample dripping port 49 to react with the reagent for color development, the color recognition sensor 495 recognizes the color change to output a result, and after detection is finished, the second test paper driving motor 45 drives the connection test paper 493 which is finished to be detected to the tested paper storage cavity 492; when not detected, the linear motor 494 drives the resilient seal strip closed, preventing moisture from entering the untested paper storage cavity 491.
Table 1 is the result output by the color recognition sensor 495 for recognizing the color change:
table 1 detectable value/color change contrast
From table 1, the lead and mercury contents can be found.
The data of Table 1 were then compared to conventional indicators and limits for water quality, as shown in FIG. 7.
The power supply voltage required by the water quality detection module can be customized to 5-12V; by adopting the design of replaceable consumable materials, only 50uL of liquid is needed for single detection, no waste liquid is generated, and a result is obtained after 60 seconds.
Lead measuring range is 0-1.0mg/L, and the minimum measured value is 0.005mg/L;
the mercury measurement range is 0-0.15mg/L, and the minimum measured value is 0.001mg/L.
The water quality detection module is not limited to water quality heavy metal detection, and can detect all components in water which can be detected by test paper, namely, the rapid water quality heavy metal detection can be realized by the built-in micro-flow pump and the color recognition sensor.
The water quality detection box is based on a microfluidic technology, and is small in size; by the built-in micro-flow pump and the color recognition sensor, rapid water quality detection can be realized; the modular design integrates a color recognition sensor; the existing pipeline can be directly accessed, and the flow is not affected; micro-detection, wherein the liquid amount for single detection is only 50uL; the detection speed is high, and the single detection is not more than 60s; low power consumption, about 340mA peak current; the consumable is replaceable, and a single consumable can be detected 30 times.
The water quality detection module provided by the utility model comprises 3 modularized components: the explosion-proof electromagnetic valve, the pressure-reducing electromagnetic valve and the water quality detection box are used for detecting water quality; the inner diameter of the first connecting end of the pressure reducing electromagnetic valve is larger than that of the second connecting end of the pressure reducing electromagnetic valve, so that water in a waterway (namely the first connecting end) in front of the pressure reducing electromagnetic valve is fully mixed, the extracted water sample is ensured to be the latest water quality, and the water quality entering from the second electromagnetic valve is the extracted water sample; the utility model has small volume and convenient installation and use.
The above disclosure is only a preferred embodiment of the present utility model, and it should be understood that the scope of the utility model is not limited thereto, and those skilled in the art will appreciate that all or part of the procedures described above can be performed according to the equivalent changes of the claims, and still fall within the scope of the present utility model.
Claims (10)
1. A water quality detection box comprises a detection cavity and is characterized in that,
the detection cavity is provided with a liquid inlet pipeline, a microfluidic pump is arranged on the liquid inlet pipeline, the liquid inlet pipeline forms a sample dropping port through the microfluidic pump, and a color identification sensor is arranged on one side of the sample dropping port;
the detection test paper is arranged below the sample dropping port, one end of the detection test paper is provided with a driving mechanism, and the driving mechanism drives the detection test paper to move to the lower side of the color identifier after the sample dropping is carried out through the sample dropping port.
2. The water quality testing cartridge of claim 1, wherein: the test paper is arranged in a test paper detection box, the test paper detection box comprises an untested paper storage cavity and a tested paper storage cavity which are arranged side by side, one end of the untested test paper is arranged in the untested paper storage cavity in a winding shaft mode, and the other end of the untested test paper extends from an outlet of the untested paper storage cavity to the tested paper storage cavity to form a tested test paper winding shaft.
3. The water quality testing cartridge of claim 2, wherein the test strip testing cartridge is removably disposed within the water quality testing cartridge.
4. The water quality testing cartridge of claim 2, wherein a waste water cartridge is disposed below the tested paper storage chamber.
5. The water quality testing cartridge of claim 2, wherein: the non-test paper storage cavity is provided with a sealing strip, and the sealing strip is of an elastic structure and is arranged above an outlet of the non-test paper storage cavity.
6. The water quality testing cartridge of claim 2, wherein the drive mechanism comprises a second test paper drive motor; and the second test paper driving motor drives the tested test paper reel.
7. The water quality testing cartridge of claim 6, wherein the drive mechanism further comprises a first test paper drive motor that drives the unmeasured test paper spool and rotates in the same direction as the second test paper drive motor.
8. The water quality testing cartridge of claim 1, wherein the color recognition sensor is disposed at 1cm ± 0.1cm from the sample drop port.
9. The water quality testing box of claim 5, further comprising a linear motor disposed above the sealing strip.
10. The water quality detection box according to claim 1, wherein the liquid inlet pipeline forms a dripping pipeline and a waste liquid pipeline after passing through the micro-flow pump, a first electromagnetic valve is arranged on the dripping pipeline, and a second electromagnetic valve is arranged on the waste liquid pipeline; the waste liquid pipeline is connected with the waste liquid box through a second electromagnetic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222473342.8U CN219799244U (en) | 2022-09-19 | 2022-09-19 | Water quality detection box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222473342.8U CN219799244U (en) | 2022-09-19 | 2022-09-19 | Water quality detection box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219799244U true CN219799244U (en) | 2023-10-03 |
Family
ID=88184963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222473342.8U Active CN219799244U (en) | 2022-09-19 | 2022-09-19 | Water quality detection box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219799244U (en) |
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2022
- 2022-09-19 CN CN202222473342.8U patent/CN219799244U/en active Active
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