Chemical analysis method water quality detection device and analysis method

Abstract

The invention relates to the technical field of water quality detection, in particular to a water quality detection device adopting a chemical analysis method and an analysis method.The device comprises a suitcase and a plurality of test tubes, a cover plate is hinged to the top of the suitcase, a base is fixedly connected to the inner bottom wall of the suitcase, a supporting rod is fixedly connected to the top of the base, and a rotating table is fixedly connected to the supporting rod; a plurality of placing grooves for placing test tubes are formed in the top of the rotating table, and a rotating assembly for driving the rotating table to rotate is arranged in the suitcase; a grinding assembly for grinding reagent raw materials is arranged on the rotating table; the top of the base is fixedly connected with a drain pipe; one end, far away from the base, of the drain pipe extends above the placing groove; the side wall of the suitcase is communicated with a sampling pipe. The positions of the test tubes are rapidly adjusted through rotation of the rotating table, so that the liquid discharge tube rapidly corresponds to different test tubes, meanwhile, the sampling tube continuously collects water samples with specified doses, and the water samples are sequentially discharged into different test tubes through the liquid discharge tube, so that the detection difficulty is reduced, and the detection efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of water quality testing technology, specifically to a chemical analysis method for water quality testing and analysis. Background Technology

[0002] Water quality safety is a core aspect of environmental protection, public health, and industrial production monitoring. Chemical analysis, as a classic method for water quality testing, is widely used in laboratory environments due to its accuracy and reliability, typically involving a series of standardized procedures including sampling, sample pretreatment, reagent addition, reaction, and result analysis. However, existing water quality testing technologies are beginning to evolve towards on-site testing.

[0003] In existing technologies, the paper "Design and Experiment of Signal Acquisition and Transmission System for Portable Multi-Parameter Water Quality Analyzer" (by Yi Jikun) points out: "The DREL series from Hach Company in the United States is a representative of water quality analysis boxes. This type of water quality analysis box can realize on-site testing of multiple water quality monitoring items, but it also has obvious drawbacks, such as the need to carry a large number of reagents, complex operation, and suitability only for professional personnel." This water quality analysis box can realize on-site testing of multiple water quality monitoring items. It is equipped with acquisition equipment and a large number of reagents. Operators can use the acquisition equipment to collect water samples, then collect water samples from multiple test tubes, mix the water samples with different reagents, and observe the reaction of each test tube to analyze the water quality.

[0004] Although existing on-site testing equipment possesses portability and multi-parameter detection capabilities, its fundamental shortcomings lie in: the operational process is highly dependent on manual labor, requiring professional personnel to repeatedly perform a series of tedious steps such as test tube replacement, water sample collection, dispensing, and reagent addition; the various stages are disconnected, making it difficult to achieve rapid switching of large batches of test tubes and coordinated water sample dispensing, resulting in low overall testing efficiency; furthermore, it relies on pre-prepared reagents, which generally suffer from poor stability, high transportation and storage risks, and limited shelf life. Therefore, this invention provides an integrated testing device that can automatically coordinate sampling, dispensing, and test tube switching, and supports the safe on-site preparation of reagents. Summary of the Invention

[0005] To address the aforementioned issues, this invention provides an integrated and automated chemical analysis water quality testing device and method. The core of this device lies in a drive system that enables the intermittent switching of test tubes, quantitative collection and dispensing of water samples, and on-site grinding of testing reagent raw materials, thereby achieving rapid, safe, and efficient on-site multi-parameter water quality analysis.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows: A water quality testing device using a chemical analysis method includes a carrying case and several test tubes. A cover plate is hinged to the top of the carrying case, a base is fixedly connected to the bottom wall of the carrying case, a support rod is fixedly connected to the top of the base, a rotating platform is rotatably connected to the top of the support rod, and several placement slots for placing test tubes are opened on the top of the rotating platform. A rotating assembly for driving the rotating platform to rotate is provided inside the carrying case. A grinding frame is fixedly connected to the support rod, the bottom wall of the grinding frame is rotatably engaged with the bottom of the rotating platform, and a feeding cover is hinged to the top of the grinding frame. A grinding assembly for grinding reagent raw materials is provided inside the grinding frame. A drain pipe is fixedly connected to the top of the base, and the end of the drain pipe away from the base extends above the placement slots. A sampling tube is connected to the side wall of the carrying case. A sampling assembly for collecting and discharging water samples according to the rotating sampling tube of the rotating platform is also provided inside the carrying case.

[0007] The technical principle of the above solution is as follows: Each test tube is placed in a different placement slot. The rotating assembly drives the rotating platform to rotate, aligning each test tube with the drain pipe in sequence. As the platform rotates, a sampling tube is inserted into the water source. Each time the platform rotates, a test tube in the placement slot is aligned with the drain pipe, and the sampling assembly collects a water sample through the sampling tube and delivers it to the test tube through the drain pipe. While the platform is rotating, the feeding cap is opened and reagent raw materials are added to the grinding frame. The rotation of the platform drives the grinding assembly to grind the reagent raw materials to obtain raw material powder. Various test reagents are prepared on-site using the raw material powder and added to each test tube. The reaction is observed, and the water quality is analyzed.

[0008] The above approach has the following beneficial effects: 1. In this invention, the rotating platform, drainage pipe, and sampling pipe work together to ensure that the sampling pipe collects a water sample once for each rotation of the rotating platform, and the drainage pipe delivers the water sample to the test tube. This allows for the rapid acquisition of multiple test tubes containing equal amounts of water sample, providing a sufficient sample base for subsequent large-scale chemical testing. It eliminates the need for operators to repeatedly perform test tube changes, water sample collection, and water sample addition, dynamically coordinating the switching of large batches of test tubes, water sample collection, and water sample dispensing, thus reducing operational difficulty and improving operational efficiency.

[0009] 2. Existing testing reagents often suffer from poor stability, inconvenient transportation and storage, and limited shelf life, such as volatile substances, strong acids, and strong alkalis. Carrying pre-prepared testing reagents to the testing site severely reduces the safety and effectiveness of the testing work. In this invention, operators only need to carry easily transportable and storable solid raw materials, improving the safety of the testing work during the journey. The device can grind the raw materials while collecting water samples, making it convenient for operators to prepare testing reagents on-site, ensuring the quality of the testing reagents, and thus improving the accuracy of the test results.

[0010] 3. In this invention, the switching of test tubes, the grinding of reagent raw materials, and the collection and discharge of water samples are all achieved synchronously by the rotation of the rotating table. There is no need to design multiple drive sources. The coordination of each operation step is extremely high. The overall structure of the device is compact, which effectively reduces the overall design cost of the device and thus reduces the detection cost of water quality monitoring.

[0011] Furthermore, the grinding assembly includes several connecting rods fixedly connected to the side wall of the rotating table. Each connecting rod has a grinding wheel rotatably connected to the end away from the rotating table, and the grinding wheel is in rolling contact with the bottom wall of the grinding frame.

[0012] Beneficial effects: When the rotating table rotates, it will drive the connecting rod to rotate. Since the connecting rod is connected to the grinding wheel, the grinding wheel rolls with the bottom wall of the grinding frame. Therefore, the grinding wheel will roll along the bottom wall of the grinding frame, thereby crushing the reagent raw material to obtain raw material powder.

[0013] Furthermore, the rotating assembly includes a rotating shaft located on one side of the rotating table, a rotating wheel fixedly connected to the rotating shaft, baffles fixedly connected to both sides of the rotating wheel, and an inclined plate fixedly connected to the side wall of the rotating wheel; each baffle has a through groove near the inclined plate; a driving assembly for driving the rotating shaft to rotate is provided inside the carrying case; a rotating groove is provided on the grinding frame for the rotating wheel, baffles, and inclined plate to rotate; both the baffles and inclined plates are slidably engaged with their adjacent grinding wheels; a receiving assembly for obtaining the ground reagent raw material is provided at the rotating groove.

[0014] Beneficial effects: When the shaft rotates, it drives the rotating wheel, baffle and inclined plate to rotate. When the inclined plate contacts the grinding wheel, it squeezes and guides the grinding wheel. The grinding wheel passes through the through groove under the squeezing and guiding action of the inclined plate. At the same time, the grinding wheel drives the connecting rod and the rotating table to rotate, and causes the next grinding wheel to enter the space between the baffles through the through groove. This process is repeated to drive the rotating table to rotate intermittently.

[0015] Furthermore, the drive assembly includes a controller and a drive component fixedly connected to the inner wall of the suitcase, with the output shaft of the drive component fixedly connected to the rotating shaft coaxially; the controller is used to control the operation of the drive component.

[0016] Beneficial effect: When the controller starts the drive unit, the output shaft of the drive unit will drive the rotating shaft to rotate, which in turn drives the rotating table to rotate intermittently.

[0017] Furthermore, the receiving component includes a receiving tube fixedly connected to the base, one end of the receiving tube being located below the rotating groove, and the other end of the receiving tube being connected to the side wall of the carrying case, with a material handling cover hinged at the connection point.

[0018] Beneficial effects: The receiving tube can receive and store the raw material powder in the grinding frame. When it is necessary to prepare test reagents, the raw material powder can be obtained by opening the material dispensing cover, thereby preparing test reagents.

[0019] Furthermore, an elastic scraper is slidably fitted inside the grinding frame, and the side wall of the scraper is fixedly connected to the side wall of the rotating table.

[0020] Beneficial effects: When the rotating table rotates, it also drives the scraper to rotate, which in turn transports the raw material powder in the grinding frame to the receiving tube.

[0021] Furthermore, the sampling assembly includes a piston box fixedly connected to the bottom wall of the carrying case. One side of the piston box is connected to the sampling tube, and a first one-way valve is connected at the connection point. The first one-way valve operates from the sampling tube to the piston box. The other side of the piston box is connected to the drain pipe, and a second one-way valve is connected at the connection point. The second one-way valve operates from the piston box to the drain pipe. A piston plate is vertically slidably fitted inside the piston box. A piston rod is fixedly connected to the top of the piston plate. The top of the piston rod penetrates the top wall of the piston box and slides therewith. A transmission assembly for driving the piston rod to slide vertically is provided at the top of the piston rod.

[0022] Beneficial effects: When the piston plate moves vertically inside the piston box, the piston box collects water samples through the sampling tube and delivers the water samples to the test tube through the drain pipe, thus completing the collection and dispensing of water samples.

[0023] Furthermore, the transmission assembly includes a first rod fixedly connected to the end of the rotating shaft away from the drive member, a second rod hinged to the end of the first rod away from the rotating shaft, and the end of the second rod away from the first rod hinged to the top of the piston rod.

[0024] Beneficial effects: When the shaft rotates, it drives the first rod to rotate, which in turn drives the second rod to rotate. The rotation of the second rod drives the piston rod and piston plate to slide back and forth in the piston box, thereby realizing the collection and dispensing of water samples.

[0025] Furthermore, it also includes an intelligent analysis system, which comprises an image acquisition module, an intelligent analysis module, and a result output module.

[0026] The image acquisition module includes a camera and a fill light that are fixedly connected to the top of the base; the image acquisition module is used to acquire test tube image data through the camera and transmit the test tube image data to the intelligent analysis module.

[0027] The intelligent analysis module is used to build an image analysis model using a convolutional neural network (CNN). The image analysis model takes test tube image data and reagent names as input, derives water quality analysis results based on the test tube image data and reagent names, and transmits the water quality analysis results to the result output module.

[0028] The results output module includes a display embedded in the cover plate; the results output module is used to display the water quality analysis results on the display.

[0029] Beneficial effects: Each rotation of the rotating platform aligns different test tubes with the camera, allowing the camera to capture images from each tube. The intermittent rotation of the platform provides the camera with sufficient time to acquire clear test tube images, providing a solid data foundation for subsequent water quality analysis by the intelligent analysis module. The intelligent analysis module uses an image analysis model to automatically analyze the test tube image data. Compared to existing technologies that rely on the experience of professionals, this analysis method is more efficient, objective, and accurate.

[0030] Furthermore, a chemical analysis method for water quality detection includes the following steps: S1, Water Sample Collection: Insert the sampling tube into the water source, start the drive unit to collect the water sample into the piston box, and drive the rotating table to rotate. Use the drain pipe to quantitatively discharge the water sample into each test tube.

[0031] S2, Reagent addition: Open the feeding cap, add the reagent raw material into the grinding frame, grind the reagent raw material with the grinding wheel to obtain raw material powder, use the scraper to transport the raw material powder to the receiving tube, open the dispensing cap to obtain the raw material powder, use the raw material powder to prepare the test reagent, add it to the test tube, and let the test reagent react with the water sample.

[0032] S3, Water Sample Analysis: The image acquisition module acquires test tube images, the intelligent analysis module outputs the analysis results, and the analysis results can be viewed on the display.

[0033] Beneficial effects: Compared with existing technologies, this method improves the feasibility and convenience of on-site water testing by rapidly collecting water samples and dividing them into equal batches. Furthermore, by assisting on-site operators in preparing test reagents, the effectiveness and accuracy of the test are further enhanced. Attached Figure Description

[0034] Figure 1 This is an isometric view of the water quality testing device using the chemical analysis method of the present invention.

[0035] Figure 2 This is an isometric view of the grinding component in the water quality testing device of the chemical analysis method of the present invention.

[0036] Figure 3 This is an isometric view of the rotating component in the water quality testing device of the chemical analysis method of the present invention.

[0037] Figure 4 This is a top view of the grinding component in the water quality testing device of the chemical analysis method of the present invention.

[0038] Figure 5 This is a cross-sectional view of the sampling component in the chemical analysis water quality testing device of the present invention.

[0039] Figure 6 This is a side view of the grinding component in the water quality testing device of the chemical analysis method of the present invention.

[0040] Figure 7 This is a schematic diagram of the steps of the chemical analysis method for water quality detection and analysis of the present invention.

[0041] The reference numerals in the accompanying drawings of the instruction manual include: 1. carrying case; 2. cover plate; 3. display; 4. base; 5. support rod; 6. rotating table; 7. connecting rod; 8. grinding wheel; 9. grinding frame; 10. driving component; 11. rotating shaft; 12. rotating wheel; 13. baffle; 14. inclined plate; 15. receiving tube; 16. first rod; 17. second rod; 18. piston box; 19. sampling tube; 20. drain tube; 21. piston rod; 22. piston plate; 23. placement ring; 24. material taking cover; 25. material feeding cover; 26. camera; 27. first one-way valve; 28. second one-way valve; 29. ​​test tube. Detailed Implementation

[0042] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0044] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0045] The following detailed description illustrates the specific implementation method: Example 1:

[0046] like Figure 1 and Figure 2 As shown, a water quality testing device using a chemical analysis method includes a carrying case 1 and several test tubes 29. A cover plate 2 is hinged to the top of the carrying case 1. A base 4 is bolted to the bottom wall of the carrying case 1. A support rod 5 is bolted to the top of the base 4. A rotating platform 6 is rotatably connected to the top of the support rod 5. Several placement slots for placing the test tubes 29 are opened on the top of the rotating platform 6. A drain pipe 20 is fixedly bonded to the top of the base 4, with one end of the drain pipe 20 extending above the placement slots. A sampling tube 19 is connected to the side wall of the carrying case 1. In this embodiment, the sampling tube 19 is a flexible hose. A placement ring 23 is bolted to the side wall of the carrying case 1, and the sampling tube 19 and the placement ring 23 can be detachably engaged.

[0047] like Figure 2 and Figure 3 As shown, the rotating table 6 is equipped with a grinding assembly for grinding reagent raw materials. The grinding assembly includes a grinding frame 9 bolted to the support rod 5, and several connecting rods 7 bolted to the side wall of the rotating table 6. Each connecting rod 7 is rotatably connected to a grinding wheel 8 at the end away from the rotating table 6. The grinding wheel 8 is in rolling engagement with the inner bottom wall of the grinding frame 9. The grinding frame 9 is rotatably engaged with the rotating table 6, and a feeding cover 25 is hinged to the top of the grinding frame 9.

[0048] Specifically, such as Figure 2 and Figure 3 As shown, when the rotating table 6 rotates, it will drive the connecting rod 7 and the grinding wheel 8 to rotate. Since the grinding wheel 8 is in rolling engagement with the inner bottom wall of the grinding frame 9 and the grinding wheel 8 is in rotating engagement with the connecting rod 7, the grinding wheel 8 will roll along the inner bottom wall of the grinding frame 9 during this process. At this time, the feeding cover 25 is opened, and the reagent raw materials of the specified weight and type are put into the grinding frame 9. The grinding wheel 8 will grind the reagent raw materials to form raw material powder, which is convenient for subsequent preparation of the required test reagents.

[0049] like Figure 3 As shown, the carrying case 1 contains a rotating assembly for driving the rotating platform 6 to rotate. The rotating assembly includes a rotating shaft 11 located on one side of the rotating platform 6, a rotating wheel 12 bolted to the center of the rotating shaft 11, baffles 13 bolted to both sides of the rotating wheel 12, and inclined plates 14 bolted to the side walls of the rotating wheel 12; each baffle 13 has a through slot near the inclined plate 14; the carrying case 1 contains a driving assembly for driving the rotating shaft 11 to rotate; as shown... Figure 2As shown, the drive assembly includes a controller and a drive component 10 (in this embodiment, the drive component 10 is a servo motor) that is bolted to the inner wall of the carrying case 1. The output shaft of the servo motor is coaxially bolted to the rotating shaft 11. The controller is used to control the operation of the servo motor. The grinding frame 9 has a rotating groove for the rotating wheel 12, the baffle 13 and the inclined plate 14 to rotate. The baffle 13 and the inclined plate 14 are slidably engaged with their adjacent grinding wheels 8 (in this embodiment, the distance between the baffles 13 is greater than the diameter of the grinding wheel 8 and equal to the arc length between the center points of the adjacent grinding wheels 8).

[0050] Specifically, such as Figure 2 and Figure 4 As shown, in the initial state, one of the grinding wheels 8 is located between the baffles 13, and the inclined plate 14 and the through groove are located on top of the rotating wheel 12.

[0051] like Figure 2 As shown, when the servo motor is started by the controller, the output shaft of the servo motor will drive the rotating shaft 11 to rotate clockwise, and the rotating shaft 11 will drive the rotating wheel 12, the baffle 13, and the tilting plate 14 to rotate clockwise; as Figure 4 As shown, when the inclined plate 14 rotates to below and contacts the grinding wheel 8, the through groove rotates to the rotating groove; the inclined plate 14 exerts a downward thrust on the grinding wheel 8, pushing the grinding wheel 8 downward so that it passes through the through groove below; as Figure 4 As shown, since the projection of the inclined plate 14 on the length of the rotating shaft 11 is equal to the distance between the baffles 13, and the distance between the baffles 13 is equal to the arc length between the center points of adjacent grinding wheels 8, the inclined plate 14 pushes the previous grinding wheel 8 downward while the next grinding wheel 8 enters between the baffles 13 through the upper through slot until the inclined plate 14 contacts the bottom of the grinding wheel 8 again; this process repeats, and the grinding wheel 8 drives the connecting rod 7 to rotate clockwise intermittently, which in turn drives the rotating table 6 to rotate clockwise intermittently; the rotating table 6 then drives each test tube 29 to rotate continuously to the bottom of the drain pipe 20 and pause briefly. Figure 6 This facilitates the subsequent delivery of water samples to test tubes 29 via drain tube 20.

[0052] A receiving assembly for receiving the ground reagent raw materials is provided at the rotating groove. The receiving assembly includes a receiving tube 15 fixedly connected to the base 4. One end of the receiving tube 15 is located below the rotating groove, and the other end of the receiving tube 15 is connected to the side wall of the carrying case 1. A material-retrieving cover 24 is hinged at the connection between the two. An elastic scraper is slidably fitted inside the grinding frame 9, and the side wall of the scraper is bolted to the side wall of the rotating table 6.

[0053] Specifically, when the rotating table 6 rotates, it also drives the scraper to rotate, thereby conveying the raw material powder in the grinding frame 9 to the receiving tube 15 through the rotating groove. At the same time, the scraper will also contact the baffle 13 at the rotating groove. Due to the elasticity of the scraper, whenever the scraper contacts the baffle 13, the scraper will deform and pass over the baffle 13. At the same time, the baffle 13 will vibrate, thereby shaking off the raw material powder attached to the surface of the scraper. The shaken raw material powder will also be conveyed to the receiving tube 15 through the rotating groove. The receiving tube 15 can receive and store the raw material powder in the grinding frame 9. When it is necessary to prepare test reagents, the raw material powder can be obtained by opening the material dispensing cover 24, thereby preparing test reagents.

[0054] like Figure 2 and Figure 5 As shown, the carrying case 1 also contains a sampling assembly for collecting and discharging water samples using the rotating sampling tube 19 of the rotating platform 6. The sampling assembly includes a piston box 18 bolted to the bottom wall of the carrying case 1. One side of the piston box 18 is connected to the sampling tube 19, and a first one-way valve 27 is connected at the connection point. The flow direction of the first one-way valve 27 is from the sampling tube 19 to the piston box 18. The other side of the piston box 18 is connected to the drain pipe 20, and a second one-way valve 28 is connected at the connection point. The flow direction of the second one-way valve 28 is from the piston box 18 to the drain pipe 20. A piston plate 22 is vertically slidably fitted inside the piston box 18. A piston rod 21 is bolted to the top of the piston plate 22. The top of the piston rod 21 penetrates the top wall of the piston box 18 and is slidably fitted therewith. A transmission assembly for driving the piston rod 21 to slide vertically is provided at the top of the piston rod 21. Figure 2 and Figure 3 As shown, the transmission assembly includes a first rod 16 bolted to the end of the rotating shaft 11 away from the servo motor, a second rod 17 hinged to the end of the first rod 16 away from the rotating shaft 11, and the end of the second rod 17 away from the first rod 16 hinged to the top of the piston rod 21.

[0055] Specifically, such as Figure 1 As shown, remove the sampling tube 19 from the placement ring 23 and insert it into the target water source; as Figure 2 and Figure 3 As shown, when the rotating shaft 11 rotates, it also drives the first rod 16 to rotate; when the first rod 16 rotates upward, it drives the second rod 17 to move upward. Figure 3 The second lever 17 will cause the piston rod 21 and piston plate 22 to slide upward within the piston box 18. Figure 5 Then, through the first one-way valve 27 and the sampling tube 19, the water sample from the water source is drawn into the piston box 18. When the first rod 16 rotates downward, the first rod 16 will push the second rod 17 to move downward. Figure 3The second lever 17 will cause the piston rod 21 and piston plate 22 to slide downwards within the piston box 18. Figure 5 The water sample in the piston box 18 is then transported to the test tube 29 below the drain pipe 20 through the second one-way valve 28 and the drain pipe 20. During this process, the test tube 29 below the drain pipe 20 is switched once every time the rotating table 6 rotates intermittently. The sampling tube 19 completes one water sample aspiration, and the drain pipe 20 completes one water sample transport. Since the movement stroke of the first rod 16, the second rod 17 and the piston plate 22 is fixed, the dosage of water sample in each test tube 29 is the same. This makes it easy for the operator to add the corresponding dosage of the test reagent according to the water sample dosage, so that the two react fully and improve the accuracy of observation and analysis.

[0056] This invention uses the rotation of the rotating shaft 11 to synchronously drive the rotating table 6 and the piston plate 22, so that the switching of test tubes 29, water sample collection and water sample transportation can be carried out continuously and regularly, and coordinated with each other. The device will continuously switch the position of the test tubes 29 and deliver an equal amount of water sample to each test tube 29 in turn. This allows the switching of a large number of test tubes 29 and the water sample dispensing to be carried out in a coordinated manner, reducing the operational difficulty of the detection work and improving the convenience and efficiency of the detection work.

[0057] At the same time, the rotating table 6 will drive the grinding wheel 8 to grind the reagent raw materials and drive the scraper to transport the raw material powder, so that the test reagents can be made and used on site, improving the effectiveness of the test reagents and the accuracy of the test results.

[0058] Example 2:

[0059] like Figure 1 and Figure 6 As shown, the difference from Example 1 is that the chemical analysis water quality testing device further includes an intelligent analysis system, which comprises an image acquisition module, an intelligent analysis module, and a result output module. All modules are interconnected.

[0060] The specific functions of each module are as follows: like Figure 6 As shown, the image acquisition module includes a camera 26 and a fill light (not shown) that are bolted to the top of the base 4; the image acquisition module is used to acquire image data of the test tube 29 through the camera 26 and transmit the image data of the test tube 29 to the intelligent analysis module.

[0061] Specifically, each time the rotating platform 6 rotates intermittently, it will drive different test tubes 29 to align with the camera 26, enabling the camera 26 to capture images from each test tube 29. Furthermore, since the rotating platform 6 rotates intermittently rather than continuously, the camera 26 has enough time to capture clear image data from the test tubes 29 and transmit the image data to the intelligent analysis module, providing a good data foundation for the subsequent water quality analysis by the intelligent analysis module.

[0062] In actual testing, the color produced by the chemical reaction can be affected by changes in external light, leading to inaccurate test results. In this embodiment, images of test tube 29 are acquired in a relatively sealed suitcase 1, and stable supplemental lighting is provided by a supplemental light lamp. The lighting environment is basically the same for each image acquisition. This method can effectively reduce the impact of changes in external light on the test results and improve the accuracy of the test results.

[0063] The intelligent analysis module is used to build an image analysis model using a convolutional neural network (CNN). The image analysis model takes test tube image data and reagent names as input, derives water quality analysis results based on the test tube image data and reagent names, and transmits the water quality analysis results to the result output module.

[0064] Specifically, the image analysis model is trained based on several manually labeled test tube images. The test tube images include several images taken under different water quality backgrounds, different test reagents, and different chemical reaction levels (all were captured in the suitcase 1 by camera 26, with basically the same light intensity and consistent image quality). The manually labeled content includes the name of the test reagent, the reaction color, and the actual concentration of various substances.

[0065] The specific structure of the image analysis model is as follows: Input layer: Input test tube image data and test reagent name; Processing layer: Based on the reaction colors and reagent names in the test tube image data, analyze the various substances present in the current water sample and their concentrations; Output layer: Outputs the various substances present in the current water sample and their concentrations.

[0066] The intelligent analysis module uses an image analysis model to automatically analyze test tube image data. Compared with the existing technology that relies on the experience of professionals for analysis, this analysis method is more efficient, objective and accurate.

[0067] like Figure 1 As shown, the result output module includes a display 3 embedded in the cover plate 2; the result output module is used to display the water quality analysis results through the display 3.

[0068] Specifically, the results output module is used to display the various substances present in the current water sample and their concentrations on the display 3, making it convenient for users to view.

[0069] Example 3:

[0070] like Figure 7 As shown, the difference from Example 2 is that a chemical analysis method for water quality detection includes the following steps: S1, Water sample collection: Insert the sampling tube 19 into the water source, start the servo motor, collect the water sample into the piston box 18, and drive the rotating table 6 to rotate. Use the drain pipe 20 to quantitatively discharge the water sample into each test tube 29.

[0071] S2, Reagent addition: Open the feeding cover 25, add the reagent raw material to the grinding frame 9, grind the reagent raw material with the grinding wheel 8 to obtain raw material powder, use the scraper to transport the raw material powder to the receiving tube 15, open the dispensing cover 24 to obtain the raw material powder, use the raw material powder to prepare the test reagent, add it to the test tube 29, and let the test reagent react with the water sample.

[0072] S3, Water Sample Analysis: The image acquisition module acquires the image of test tube 29, the intelligent analysis module outputs the analysis results, and the analysis results can be viewed on display 3.

[0073] Specific experiments are as follows: I. Experimental Preparation Experimental group: Water sample testing was conducted using the apparatus and method described in this invention.

[0074] Control group: Water samples were tested using a DREL water quality analyzer manufactured by Hach Company, USA.

[0075] II. Experimental Procedure The experimental and control groups were located in the same laboratory. The control group prepared three sets of ammonia nitrogen determination reagents, three sets of total phosphorus determination reagents, and three sets of permanganate index determination reagents in the laboratory. The experimental group carried three sets of solid ammonia nitrogen determination raw materials, three sets of solid total phosphorus determination raw materials, and three sets of solid permanganate index determination raw materials. After the control group completed the preparation of all kinds of reagents, the experimental and control groups went to the target water source 5km away at the same time to conduct water sample testing (the ammonia nitrogen content, total phosphorus content, and permanganate index of the target water source were known). The average water sample testing time of each group was recorded (the preparation time of the two sets of test reagents was basically the same, so the preparation time of the test reagents was ignored), the average quality score of the test reagents (out of 10), and the average detection error of each substance.

[0076] III. Experimental Results Table 1 Comparison of Experimental Data Group experimental group control group Average water sample testing time (min) 18 35 Average quality score of test reagents 9 7.5 Average detection error of ammonia nitrogen (%) +3.2 +4.5 Average detection error of total phosphorus (%) -3.8 -4.4 Average detection error of permanganate index (%) +4.2 +4.7 IV. Experimental Conclusions As shown in Table 1, the average testing time for water samples in the experimental group was significantly shorter than that in the control group. The reason for this is that the experimental group was able to automate the collection, transportation, and switching of large batches of water samples, effectively shortening the operation time required for manual liquid transfer, liquid addition, and individual sample testing, thereby effectively improving the efficiency of water sample testing.

[0077] As shown in Table 1, the average quality score of the test reagents in the experimental group was significantly higher than that in the control group. The reason for this is that the experimental group was able to grind the reagent raw materials on-site and prepare the test reagents, while the test reagents in the control group had undergone long-term transportation, resulting in a decline in quality.

[0078] As shown in Table 1, the average detection error of various substances in the experimental group was significantly lower than that in the control group. The reason for this is that the experimental group, through the design of the image analysis model, was able to effectively improve the objectivity and accuracy of data analysis, avoid human error, and thus improve the accuracy of the detection results.

[0079] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A water quality testing device using a chemical analysis method, comprising a carrying case (1) and several test tubes (29), wherein a cover plate (2) is hinged to the top of the carrying case (1), characterized in that, The bottom wall of the suitcase (1) is fixedly connected to a base (4), the top of the base (4) is fixedly connected to a support rod (5), the support rod (5) is rotatably connected to a rotating platform (6), the top of the rotating platform (6) has several slots for placing test tubes (29), and the suitcase (1) is equipped with a rotating component for driving the rotating platform (6) to rotate. A grinding frame (9) is fixedly connected to the support rod (5). The bottom wall of the grinding frame (9) is rotatably connected to the bottom of the rotating table (6). A feeding cover (25) is hinged to the top of the grinding frame (9). A grinding component for grinding reagent raw materials is provided inside the grinding frame (9). The top of the base (4) is fixedly connected to a drain pipe (20), and the end of the drain pipe (20) away from the base (4) extends to the top of the placement slot; the side wall of the carrying case (1) is connected to a sampling tube (19); the carrying case (1) is also equipped with a sampling component for collecting and discharging water samples according to the rotating sampling tube (19) of the rotating platform (6).

2. The water quality testing device using chemical analysis according to claim 1, characterized in that, The grinding assembly includes several connecting rods (7) fixedly connected to the side wall of the rotating table (6). Each connecting rod (7) is rotatably connected to a grinding wheel (8) at the end away from the rotating table (6). The grinding wheel (8) is in rolling contact with the bottom wall of the grinding frame (9).

3. The water quality testing device using chemical analysis according to claim 1, characterized in that, The rotating assembly includes a rotating shaft (11) located on one side of the rotating table (6), a rotating wheel (12) fixedly connected to the rotating shaft (11), baffles (13) fixedly connected to both sides of the rotating wheel (12), and an inclined plate (14) fixedly connected to the side wall of the rotating wheel (12); the baffles (13) have through slots near the inclined plate (14); the carrying case (1) is provided with a driving assembly for driving the rotating shaft (11) to rotate; the grinding frame (9) has a rotating groove for rotating the rotating wheel (12), baffles (13) and inclined plate (14); the baffles (13) and inclined plate (14) are slidably engaged with the adjacent grinding wheel (8); the rotating groove is provided with a receiving assembly for obtaining the ground reagent raw materials.

4. The water quality testing device using chemical analysis according to claim 3, characterized in that, The drive assembly includes a controller and a drive unit (10) fixedly connected to the inner wall of the suitcase (1). The output shaft of the drive unit (10) is coaxially fixedly connected to the rotating shaft (11). The controller is used to control the operation of the drive unit (10).

5. The water quality testing device using chemical analysis according to claim 3, characterized in that, The receiving component includes a receiving tube (15) fixedly connected to the base (4). One end of the receiving tube (15) is located below the rotating groove, and the other end of the receiving tube (15) is connected to the side wall of the carrying case (1). A material handling cover (24) is hinged at the connection between the two.

6. The water quality testing device using chemical analysis according to claim 1, characterized in that, The grinding frame (9) has a sliding fit with an elastic scraper, and the side wall of the scraper is fixedly connected to the side wall of the rotating table (6).

7. The water quality testing device using chemical analysis according to claim 1, characterized in that, The sampling assembly includes a piston box (18) fixedly connected to the bottom wall of the carrying case (1). One side of the piston box (18) is connected to the sampling tube (19), and a first one-way valve (27) is connected at the connection point. The first one-way valve (27) flows from the sampling tube (19) to the piston box (18). The other side of the piston box (18) is connected to the drain pipe (20), and a second one-way valve (28) is connected at the connection point. The second one-way valve (28) flows from the piston box (18) to the drain pipe (20). A piston plate (22) is vertically slidably fitted inside the piston box (18). A piston rod (21) is fixedly connected to the top of the piston plate (22). The top of the piston rod (21) penetrates the top wall of the piston box (18) and slides therewith. A transmission assembly for driving the piston rod (21) to slide vertically is provided at the top of the piston rod (21).

8. The water quality testing device using chemical analysis according to claim 7, characterized in that, The transmission assembly includes a first rod (16) fixedly connected to the end of the shaft (11) away from the drive member (10), a second rod (17) hinged to the end of the first rod (16) away from the shaft (11), and the end of the second rod (17) away from the first rod (16) hinged to the top of the piston rod (21).

9. The water quality testing device using chemical analysis according to claim 1, characterized in that, It also includes an intelligent analysis system, which comprises an image acquisition module, an intelligent analysis module, and a result output module; The image acquisition module includes a camera (26) fixedly connected to the top of the base (4) and a fill light; The image acquisition module is used to acquire test tube image data through the camera (26) and transmit the test tube image data to the intelligent analysis module; The intelligent analysis module is used to build an image analysis model using a convolutional neural network (CNN). The image analysis model takes test tube image data and reagent names as input, derives water quality analysis results based on the test tube image data and reagent names, and transmits the water quality analysis results to the result output module. The results output module includes a display (3) embedded in the cover plate (2); the results output module is used to display the water quality analysis results on the display (3).

10. A chemical analysis method for water quality detection, performed using any one of the chemical analysis water quality detection devices described in claims 1-9, characterized in that, Includes the following steps: S1, water sample collection: Insert the sampling tube (19) into the water source, start the drive (10), collect the water sample into the piston box (18), and drive the rotating table (6) to rotate. Use the drain pipe (20) to quantitatively discharge the water sample into each test tube (29); S2, Reagent addition: Open the feeding cover (25), add reagent raw materials into the grinding frame (9), grind the reagent raw materials with the grinding wheel (8) to obtain raw material powder, use the scraper to transport the raw material powder to the receiving tube (15), open the material taking cover (24) to obtain the raw material powder, use the raw material powder to prepare the test reagent, add it to the test tube (29) to make the test reagent react with the water sample; S3, water sample analysis: the image of the test tube (29) is acquired by the image acquisition module, the analysis results are output by the intelligent analysis module, and the analysis results are viewed by the display (3).

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