An on-line water quality automatic analyzer
Patent Information
- Application Number
- CN202521959831.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-11
- Publication Date
- 2026-08-21
- Estimated Expiration
- 2035-09-11
AI Technical Summary
[0003]水质自动分析仪通常由检测单元、处理单元和机身等部件组成,检测单元由传感器组成,将检测传感器安装在需要检测的位置,通过处理单元接收和分析数据,从而实现水质自动分析,而检测单元通常会安装多组传感器,使得现场会造成凌乱,而且传感器一直泡在水中,容易受水中微生物的影响对探头的膜头造成损害,导致传感器的灵敏度下降或失效,从而影响设备的正常运行
[0014]本实用新型通过设置防护组件,起到了能够对检测组件、取样组件、冲洗组件和微处理器提供防护和支撑的效果,从而能够确保其稳定运行,通过检测组件、取样组件、冲洗组件和微处理器的配合,能够对水样进行分析检测的效果,取样组件用于取样,通过检测组件和微处理器能够对水样进行检测和分析,从而能够实现水质自动分析,分析完成后,通过冲洗组件能够对检测组件进行冲洗和保存,从而能够防止污物对检测探头造成污染,影响使用的情况发生,通过纯水对探头进行浸泡保存,能够防止探头受污物的影响出现损坏,有助于保持探头的清洁和灵敏度,从而能够确保测量的准确性。
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Figure CN224667795U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of online automatic water quality analyzers, specifically an online automatic water quality analyzer. Background Technology
[0002] An online automatic water quality analyzer is a device used to monitor and analyze water quality. It collects various parameters from water samples through sensors, such as dissolved oxygen, pH value, turbidity, conductivity, and temperature, and converts them into electrical signals for processing and analysis. This real-time data acquisition and analysis allows users to quickly grasp the water quality status and make corresponding treatment decisions. In addition, the online automatic water quality analyzer also features high-precision measurement, data storage and analysis, alarm functions, remote monitoring and control, compatibility and scalability, and is widely used in drinking water source protection, sewage treatment plants, industrial wastewater discharge, aquaculture, scientific research experiments, disaster early warning and other fields.
[0003] Automatic water quality analyzers typically consist of a detection unit, a processing unit, and a main body. The detection unit is composed of sensors, which are installed at the locations where detection is needed. The processing unit receives and analyzes the data to achieve automatic water quality analysis. However, the detection unit usually has multiple sets of sensors installed, which can make the site cluttered. Moreover, since the sensors are constantly immersed in water, they are susceptible to damage to the probe membranes caused by microorganisms in the water, leading to decreased sensor sensitivity or failure, thus affecting the normal operation of the equipment.
[0004] In summary, this utility model provides an online automatic water quality analyzer to solve the above problems. Utility Model Content
[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:
[0006] An online automatic water quality analyzer includes a protective assembly. The protective assembly includes a body, the inner cavity of which is divided into a first chamber, a second chamber, and a third chamber from top to bottom. A detection assembly is installed in the second chamber, and a sampling assembly and a flushing assembly are installed in the third chamber. The sampling assembly is used for sampling, and the detection assembly is used for detecting water quality. The detection assembly includes a detection box, a water quality measurement component, a first water level sensor, a drain valve, and a drain pipe. The detection box is fixedly connected to the inner wall of the second chamber. One end of the drain pipe communicates with the drain outlet of the detection box, and the other end of the drain pipe extends to the outside of the body. The drain valve is installed on the surface of the drain pipe. The first water level sensor... The sensor and water quality measurement components are both mounted on the surface of the testing chamber. The rinsing assembly includes a water tank, a rinsing water pump, a rinsing pipe, a diversion box, a nozzle, a connecting pipe, an inlet valve, and a second water level sensor. The diversion box is fixed to the surface of the testing chamber. One end of the nozzle is connected to the diversion box, and the other end of the nozzle extends into the inner cavity of the testing chamber. The second water level sensor is mounted on the surface of the water tank. The inlet valve is mounted on the surface of the rinsing pipe. Both ends of the rinsing pipe are connected to the outlet of the rinsing water pump and the inlet of the diversion box, respectively. Both ends of the connecting pipe are connected to the inlet of the rinsing water pump and the outlet of the water tank, respectively. A touch screen is mounted on the upper part of the body surface. A microprocessor is fixedly connected to the inner cavity of the first chamber.
[0007] Furthermore, in this utility model, the output terminals of the water quality measurement component, the first water level sensor, the second water level sensor, and the touch screen are all connected to the input terminal of the microprocessor, and the output terminal of the microprocessor is connected to the input terminals of the drain valve, the flushing water pump, and the inlet valve, respectively.
[0008] Furthermore, in this invention, both the water tank and the flushing pump are fixedly connected to the inner wall of the third chamber, and the water tank is used to store pure water.
[0009] Furthermore, in this utility model, the sampling assembly includes a sampling water pump, a sampling tube, an inlet valve, an inlet tube, and a float flow meter. The sampling water pump is fixedly connected to the inner wall of the third chamber, and the input ends of the sampling water pump and the inlet valve are both connected to the output end of the microprocessor.
[0010] Furthermore, in this utility model, the sampling assembly includes a sampling water pump, a sampling tube, an inlet valve, an inlet tube, and a float flow meter. The sampling water pump is fixedly connected to the inner wall of the third chamber, and the input ends of the sampling water pump and the inlet valve are both connected to the output end of the microprocessor.
[0011] Furthermore, in this utility model, the water quality measurement component includes a conductivity sensor, a pH sensor, an ORP sensor, an ammonia nitrogen sensor, and a TOC sensor. The conductivity sensor, pH sensor, ORP sensor, ammonia nitrogen sensor, and TOC sensor are all fixed to the top of the detection box, and their detection ends all penetrate into the inner cavity of the detection box.
[0012] Furthermore, in this utility model, the protective component also includes a first inspection door and a second inspection door, both of which are hinged to the machine body via hinges, and the touch screen is embedded in the surface of the machine body.
[0013] Beneficial effects: This utility model has the following beneficial effects:
[0014] This invention, by incorporating protective components, provides protection and support for the detection component, sampling component, rinsing component, and microprocessor, thereby ensuring their stable operation. Through the cooperation of these components, water samples can be analyzed and detected. The sampling component is used for sampling, while the detection component and microprocessor perform detection and analysis, enabling automatic water quality analysis. After analysis, the rinsing component cleans and preserves the detection component, preventing contamination of the probe and ensuring its usability. Immersing the probe in pure water further prevents damage from contaminants, maintaining its cleanliness and sensitivity, and ensuring measurement accuracy. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the main structure of this utility model;
[0016] Figure 2 This is a cross-sectional structural diagram of the fuselage of this utility model;
[0017] Figure 3 This is a schematic diagram showing the connection structure of the main body, detection components, sampling components, rinsing components, and microprocessor of this utility model.
[0018] Figure 4 This is a schematic diagram of the connection structure between the sampling component and the detection component of this utility model;
[0019] Figure 5 This is a schematic diagram of the connection state structure of the flushing assembly of this utility model;
[0020] Figure 6 This is a schematic diagram of the structure of this utility model.
[0021] In the picture:
[0022] 1. Protective components; 11. Body; 12. First inspection door; 13. Second inspection door; 14. First chamber; 15. Second chamber; 16. Third chamber; 2. Detection components; 21. Detection box; 22. Water quality measurement components; 221. Conductivity sensor; 222. pH sensor; 223. ORP sensor; 224. Ammonia nitrogen sensor; 225. TOC sensor; 23. First water level sensor; 24. Discharge... 25. Sewage valve; 3. Sampling assembly; 301. Sampling pump; 302. Sampling tube; 303. Inlet valve; 304. Inlet tube; 305. Float flow meter; 4. Flushing assembly; 401. Water tank; 402. Flushing pump; 403. Flushing tube; 404. Diverter box; 405. Nozzle; 406. Connecting pipe; 407. Inlet valve; 408. Second water level sensor; 5. Microprocessor; 6. Touch screen. Detailed Implementation
[0023] To better understand the technical content of this utility model, specific embodiments are described below in conjunction with the accompanying drawings. Various aspects of this utility model are described in this disclosure with reference to the accompanying drawings, which illustrate numerous illustrative embodiments. The embodiments of this disclosure are not necessarily defined to include all aspects of this utility model. It should be understood that the various concepts and embodiments described above, as well as those described in more detail below, can be implemented in any of many ways, because the concepts and embodiments disclosed in this utility model are not limited to any particular implementation. Furthermore, some aspects of this utility model can be used alone or in any suitable combination with other aspects disclosed in this utility model.
[0024] Example 1
[0025] like Figure 1-6As shown, this is the first embodiment of the present invention. This embodiment provides an online automatic water quality analyzer, including a protective component 1. The protective component 1 includes a body 11. The inner cavity of the body 11 is divided into a first chamber 14, a second chamber 15, and a third chamber 16 from top to bottom. A detection component 2 is installed in the inner cavity of the second chamber 15, and a sampling component 3 and a flushing component 4 are installed in the inner cavity of the third chamber 16. The sampling component 3 is used for sampling, and the detection component 2 is used for detecting water quality. The detection component 2 includes a detection box 21, a water quality measurement component 22, a first water level sensor 23, a drain valve 24, and a drain pipe 25. The detection box 21 is fixedly connected to the inner wall of the second chamber 15. One end of the drain pipe 25 is connected to the drain outlet of the detection box 21, and the other end of the drain pipe 25 extends to the outside of the body 11. The drain valve 24 is installed on the surface of the drain pipe 25. The first water level sensor 23 and the water quality... The measuring components 22 are all installed on the surface of the detection box 21. The rinsing component 4 includes a water tank 401, a rinsing water pump 402, a rinsing pipe 403, a diversion box 404, a nozzle 405, a connecting pipe 406, an inlet valve 407, and a second water level sensor 408. The diversion box 404 is fixed to the surface of the detection box 21. One end of the nozzle 405 is connected to the diversion box 404, and the other end of the nozzle 405 extends into the inner cavity of the detection box 21. The second water level sensor 408 is installed on the surface of the water tank 401. The inlet valve 407 is installed on the surface of the rinsing pipe 403. The two ends of the rinsing pipe 403 are connected to the outlet of the rinsing water pump 402 and the inlet of the diversion box 404, respectively. The two ends of the connecting pipe 406 are connected to the inlet of the rinsing water pump 402 and the outlet of the water tank 401, respectively. A touch screen 6 is installed on the upper end of the surface of the body 11. A microprocessor 5 is fixedly connected to the inner cavity of the first chamber 14.
[0026] like Figure 1-6As shown, the body 11 provides support and protection for the detection component 2, sampling component 3, rinsing component 4, and microprocessor 5. The sampling component 3 is connected to the water tank for convenient sampling and testing. The rinsing component 4 is used to rinse the detection component 2. The detection component 2 is used to test the water sample. The detection chamber 21 provides testing space. The sampling component 3 delivers the water sample to the inner cavity of the detection chamber 21. The first water level sensor 23 detects the liquid level in the inner cavity of the detection chamber 21. When the set value is reached, the sampling component 3 stops. The water quality measurement component 22 tests the water sample and transmits the results. The numerical data is sent to microprocessor 5 for analysis and processing. Microprocessor 5 consists of modules such as ALU, CPU, memory, expansion interface, power module, clock generator, and EU. It can analyze and process water samples using intelligent AI algorithms and can interconnect with remote terminals. Microprocessor 5 can be an STM32. After the water sample detection is completed, drain valve 24 is opened, and the water sample in the detection chamber 21 is discharged through drain pipe 25. Drain pipe 25 can be directly connected to the water tank. After the water sample is discharged, inlet valve 407 is opened, and flushing pump 402 is activated. The generated centrifugal force draws pure water from the inner cavity of the water tank 401 through the connecting pipe 406, and delivers it to the inner cavity of the detection chamber 21 through the flushing pipe 403, the diversion box 404, and the nozzle 405. The nozzle 405 can flush the detection end of the water quality measurement component 22 to prevent dirt in the water sample from adhering to the probe surface. The flushing time can be set by the microprocessor 5, and the duration can be set to 60 seconds. After flushing is completed, the drain valve 24 is closed, and the flushing component 4 continues to replenish pure water to the inner cavity of the detection chamber 21. When the first water level sensor 23 detects the pure water level, and the water level is higher than the detection probe... The head and rinsing assembly 4 stop conveying and soak the probe in pure water to prevent damage from contaminants, help keep the probe clean and sensitive, and thus ensure measurement accuracy. The second water level sensor 408 is used to detect the water level in the water tank 401 so that the staff can replenish the pure water in time. The top of the water tank 401 is also provided with a top cover for easy addition of pure water to the inner cavity of the water tank 401. The water tank 401 can also be directly connected to an external pure water machine. When the water level is insufficient, it can automatically replenish water. The nozzle 405 is a mist nozzle.
[0027] Example 2
[0028] Reference Figure 1-6 This is the second embodiment of the present invention, which is based on the previous embodiment.
[0029] In this embodiment, the output terminals of the water quality measurement component 22, the first water level sensor 23, the second water level sensor 408, and the touch screen 6 are all connected to the input terminal of the microprocessor 5. The output terminal of the microprocessor 5 is connected to the input terminals of the drain valve 24, the flushing water pump 402, and the inlet valve 407, respectively.
[0030] Both the water tank 401 and the flushing water pump 402 are fixedly connected to the inner wall of the third chamber 16. The water tank 401 is used to store pure water.
[0031] The water quality measurement component 22 includes a conductivity sensor 221, a pH sensor 222, an ORP sensor 223, an ammonia nitrogen sensor 224, and a TOC sensor 225. The conductivity sensor 221, pH sensor 222, ORP sensor 223, ammonia nitrogen sensor 224, and TOC sensor 225 are all fixed to the top of the detection box 21, and their detection ends all penetrate into the inner cavity of the detection box 21.
[0032] The protective assembly 1 also includes a first inspection door 12 and a second inspection door 13. Both the first inspection door 12 and the second inspection door 13 are hinged to the body 11 via hinges, and the touch screen 6 is embedded in the surface of the body 11.
[0033] like Figure 1-6 As shown, the conductivity sensor 221, pH sensor 222, ORP sensor 223, ammonia nitrogen sensor 224, and TOC sensor 225 can measure water conductivity, pH, oxidation-reduction capacity, ammonium ion concentration, and organic pollutant concentration. The conductivity sensor 221, pH sensor 222, ORP sensor 223, ammonia nitrogen sensor 224, and TOC sensor 225 send the detected values to the microprocessor 5, which analyzes and stores the values. The microprocessor 5 can connect to a remote terminal to send data to the remote terminal for staff to view. The equipment inside the second chamber 15 and the third chamber 16 can be easily maintained through the first maintenance door 12 and the second maintenance door 13. The measured values can be displayed on the touch screen 6, and the operation can be conveniently performed.
[0034] Example 3
[0035] Reference Figure 3 and 4 This is the third embodiment of the present invention, which is based on the first two embodiments.
[0036] In this embodiment, the sampling component 3 includes a sampling water pump 301, a sampling tube 302, a sampling valve 303, a sampling tube 304, and a float flow meter 305. The sampling water pump 301 is fixedly connected to the inner wall of the third chamber 16, and the input ends of the sampling water pump 301 and the sampling valve 303 are both connected to the output end of the microprocessor 5.
[0037] One end of the sampling tube 302 extends to the outside of the body 11, and the other end of the sampling tube 302 is connected to the inlet of the sampling water pump 301. The sampling valve 303 is installed on the surface of the sampling tube 302. One end of the sampling tube 304 is connected to the outlet of the sampling water pump 301, and the other end of the sampling tube 304 is connected to the inlet of the detection box 21. The float flow meter 305 is installed on the surface of the sampling tube 304.
[0038] like Figure 3 and 4 As shown, the sampling tube 302 is used to connect to the water tank. Water is pumped to the inner cavity of the testing chamber 21 by the sampling water pump 301 for testing. The microprocessor 5 sets the water quality testing time, typically every two or four hours. When the set testing time is reached, the drain valve 24 opens, draining the pure water from the inner cavity of the testing chamber 21 through the drain valve 24 and drain pipe 25. After the pure water is drained, water is drawn from the water tank through the sampling assembly 3. The inlet valve 303 opens, and the centrifugal force generated by the sampling water pump 301 draws water from the water tank through the sampling tube 302 and delivers it to the inner cavity of the testing chamber 21 through the inlet pipe 304. At this time, the drain valve 24 remains open. The drawn water sample is then tested in the testing chamber. After rinsing the inner cavity of 21, the water is discharged through the drain pipe 25. After 60 seconds of water sampling, the drain valve 24 is closed. This step can be set by the microprocessor 5 to control the opening and closing time of the drain valve 24. The 60-second rinsing can discharge the previous water samples from the sampling pump 301, sampling pipe 302 and inlet pipe 304 to ensure that the water sample being measured is the current water sample in the pool. The inlet flow rate can be adjusted by the float flow meter 305. The first water level sensor 23 is used to detect the water level. When the set value is reached, the sampling pump 301 stops running and the inlet valve 303 is closed. At this time, the water sample can be detected by the water quality measurement component 22. The drain valve 24, inlet valve 303 and inlet valve 407 are all electric valves.
[0039] In use, the sampling tube 302 is connected to the water tank. Water is pumped into the inner cavity of the testing chamber 21 by the sampling water pump 301 for testing. The microprocessor 5 sets the water quality testing time, water sample rinsing time, and probe rinsing time. When the set testing time is reached, the drain valve 24 opens, draining the pure water from the inner cavity of the testing chamber 21 through the drain valve 24 and drain pipe 25. After the pure water is drained, water is drawn from the water tank through the sampling assembly 3. The sampling valve 303 opens, and the centrifugal force generated by the sampling water pump 301... The sampling tube 302 extracts water from the pool and delivers it to the inner cavity of the detection chamber 21 through the sampling tube 304. At this time, the drain valve 24 is still open. After the extracted water sample rinses the inner cavity of the detection chamber 21, it is discharged through the drain pipe 25. The drain valve 24 is closed 60 seconds after the water sample is extracted. The first water level sensor 23 is used to detect the water level. When the set value is reached, the sampling water pump 301 stops running and the sampling valve 303 is closed. At this time, the water sample can be detected by the water quality measurement component 22.
[0040] The conductivity sensor 221, pH sensor 222, ORP sensor 223, ammonia nitrogen sensor 224, and TOC sensor 225 can measure water conductivity, pH, redox capacity, ammonium ion concentration, and organic pollutant concentration. The conductivity sensor 221, pH sensor 222, ORP sensor 223, ammonia nitrogen sensor 224, and TOC sensor 225 send the detected values to the microprocessor 5, which analyzes and stores the values. The microprocessor 5 can connect to a remote terminal to send the data to the remote terminal for staff to view. The touch screen 6 can display the detected values.
[0041] After the water sample test is completed, the drain valve 24 is opened, and the water sample inside the test chamber 21 is discharged through the drain pipe 25. The drain pipe 25 can be directly connected to the water tank. After the water sample is discharged, the inlet valve 407 is opened, and the centrifugal force generated by the flushing pump 402 draws pure water from the inner cavity of the water tank 401 through the connecting pipe 406. The pure water is then delivered to the inner cavity of the test chamber 21 through the flushing pipe 403, the diversion box 404, and the nozzle 405. The nozzle 405 can flush the detection end of the water quality measurement component 22 to prevent dirt in the water sample from adhering to the probe surface. The flushing time can be set by the microprocessor 5, and the duration can be set to 60 seconds. After the flushing is completed, the drain valve 24 is closed, and the flushing component 4 continues to replenish the inner cavity of the test chamber 21 with pure water. When the first water level sensor 23 detects the pure water level and the water level is higher than the detection probe, the flushing component 4 stops delivering pure water. Soaking the probe in pure water can prevent the probe from being damaged by dirt, which helps to keep the probe clean and sensitive, thereby ensuring the accuracy of the measurement.
[0042] All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Since this application is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail in this application.
[0043] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Those skilled in the art to which this invention pertains can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of this invention shall be determined by the claims.
Claims
1. An online automatic water quality analyzer, comprising a protective component (1), characterized in that: The protective assembly (1) includes a body (11). The inner cavity of the body (11) is divided into a first chamber (14), a second chamber (15), and a third chamber (16) from top to bottom. The second chamber (15) is equipped with a detection assembly (2). The third chamber (16) is equipped with a sampling assembly (3) and a rinsing assembly (4). The sampling assembly (3) is used for sampling. The detection assembly (2) is used for detecting water quality. The detection assembly (2) includes a detection box (21) and a water quality measurement group. The test chamber (21) consists of a component (22), a first water level sensor (23), a drain valve (24), and a drain pipe (25). The test chamber (21) is fixedly connected to the inner wall of the second chamber (15). One end of the drain pipe (25) is connected to the drain outlet of the test chamber (21), and the other end of the drain pipe (25) extends to the outside of the body (11). The drain valve (24) is installed on the surface of the drain pipe (25). The first water level sensor (23) and the water quality measurement component (22) are both installed on the surface of the test chamber (21). The flushing assembly (4) includes a water tank (401), a flushing water pump (402), a flushing pipe (403), a diversion box (404), a nozzle (405), a connecting pipe (406), an inlet valve (407), and a second water level sensor (408). The diversion box (404) is fixed to the surface of the detection box (21). One end of the nozzle (405) is connected to the diversion box (404), and the other end of the nozzle (405) extends into the inner cavity of the detection box (21). The second water level sensor (408) is connected to the inlet valve (409). 8) Installed on the surface of the water tank (401), the water inlet valve (407) is installed on the surface of the flushing pipe (403), the two ends of the flushing pipe (403) are respectively connected to the outlet of the flushing water pump (402) and the inlet of the diversion box (404), the two ends of the connecting pipe (406) are respectively connected to the inlet of the flushing water pump (402) and the outlet of the water tank (401), the upper end of the surface of the body (11) is equipped with a touch screen (6), and the inner cavity of the first chamber (14) is fixedly connected with a microprocessor (5).
2. The online automatic water quality analyzer as described in claim 1, characterized in that: The output terminals of the water quality measurement component (22), the first water level sensor (23), the second water level sensor (408), and the touch screen (6) are all connected to the input terminal of the microprocessor (5). The output terminal of the microprocessor (5) is connected to the input terminals of the drain valve (24), the flushing water pump (402), and the inlet valve (407), respectively.
3. The online automatic water quality analyzer as described in claim 1, characterized in that: The water tank (401) and the flushing water pump (402) are both fixedly connected to the inner wall of the third chamber (16), and the water tank (401) is used to store pure water.
4. The online automatic water quality analyzer as described in claim 1, characterized in that: The sampling assembly (3) includes a sampling water pump (301), a sampling tube (302), an inlet valve (303), an inlet tube (304), and a float flow meter (305). The sampling water pump (301) is fixedly connected to the inner wall of the third chamber (16). The input ends of the sampling water pump (301) and the inlet valve (303) are both connected to the output end of the microprocessor (5).
5. The online automatic water quality analyzer as described in claim 4, characterized in that: One end of the sampling tube (302) extends to the outside of the body (11), and the other end of the sampling tube (302) is connected to the inlet of the sampling water pump (301). The sampling valve (303) is installed on the surface of the sampling tube (302). One end of the sampling tube (304) is connected to the outlet of the sampling water pump (301), and the other end of the sampling tube (304) is connected to the inlet of the detection box (21). The float flow meter (305) is installed on the surface of the sampling tube (304).
6. The online automatic water quality analyzer as described in claim 1, characterized in that: The water quality measurement component (22) includes a conductivity sensor (221), a pH sensor (222), an ORP sensor (223), an ammonia nitrogen sensor (224), and a TOC sensor (225). The conductivity sensor (221), pH sensor (222), ORP sensor (223), ammonia nitrogen sensor (224), and TOC sensor (225) are all fixed to the top of the detection box (21), and their probes all penetrate into the inner cavity of the detection box (21).
7. The online automatic water quality analyzer as described in claim 1, characterized in that: The protective assembly (1) also includes a first inspection door (12) and a second inspection door (13), both of which are hinged to the body (11) via hinges, and the touch screen (6) is embedded in the surface of the body (11).