A drinking water fluoride real-time monitoring and early warning device

Abstract

This utility model discloses a real-time monitoring and early warning device for fluoride in drinking water, belonging to the field of water quality monitoring technology. The device includes a cabinet, a monitoring box, and a sampling mechanism. The monitoring box is divided into a pretreatment zone and a detection zone by an overflow plate. The pretreatment zone is equipped with a reagent addition system linked to a stirrer and a reagent pump. The detection zone is configured with a fluoride ion selective electrode and a reference electrode to form an asymmetric detection system. The sampling mechanism is connected to the water source via a filter, and the controller coordinates the sampling, reagent addition, stirring, and detection processes. A laminar flow field is formed through the porous overflow structure of the overflow plate, and the electrode spatial layout reduces liquid junction potential differences, effectively suppressing metal ion interference and electrode contamination. The device adopts a modular, layered design, achieving integrated control of water sample pretreatment, electrochemical detection, and exceeding-standard alarms. This solves the problems of high pH sensitivity and severe metal ion interference in existing technologies, significantly improving the accuracy and reliability of fluoride monitoring.

Description

Technical Field

[0001] This utility model relates to the field of drinking water quality monitoring technology, specifically a real-time monitoring and early warning device for fluoride in drinking water. Background Technology

[0002] Fluoride monitoring and control are crucial in drinking water treatment and supply. Both excessively high and low fluoride concentrations can adversely affect public health; therefore, accurate and real-time monitoring of fluoride concentrations in drinking water is a key step in ensuring water quality safety. Currently, fluoride monitoring in drinking water mainly relies on electrochemical detection methods, particularly ion-selective electrodes (ISEs). This technology is widely used due to its high sensitivity, rapid response, and relatively simple operation. However, the following technical bottlenecks exist in practical applications:

[0003] Fluorescence in water samples can lead to changes in the speciation of fluoride ions (such as the conversion between HF and F-), while aluminum ions (Al) can also change their speciation. 3+ ), iron ions (Fe) 3+ Metal ions such as metal ions can easily form precipitates or complexes on the electrode surface, directly interfering with the electrode response and causing detection errors.

[0004] The potential response of the fluoride ion selective electrode is highly dependent on the solution pH. Studies have shown that when the pH is below 5, fluoride ions readily combine with hydrogen ions to form HF or HF2. - Reduce free F - Activity; while at pH above 9, OH - It can interfere with the ion exchange process, leading to potential drift.

[0005] Al in the water sample 3+ Fe 3+ High-valence metal ions readily form stable complexes with fluoride ions (such as AlF6). 3- FeF6 3- This significantly reduces the concentration of free fluoride ions, causing electrode signal distortion.

[0006] Therefore, a real-time monitoring and early warning device for fluoride in drinking water is proposed to address the current shortcomings. Utility Model Content

[0007] To address the problems of existing technologies, this invention provides a real-time monitoring and early warning device for fluoride in drinking water.

[0008] The technical problem to be solved by this utility model is to overcome the defects of the above-mentioned technology and provide a real-time monitoring and early warning device for fluoride in drinking water.

[0009] To solve the above-mentioned technical problems, the technical solution provided by this utility model is a real-time monitoring and early warning device for fluoride in drinking water, including a cabinet, a monitoring box, and a sampling mechanism;

[0010] The monitoring box is located in the middle of the cabinet. The monitoring box is equipped with an overflow plate. A stirrer is located at one end of the monitoring box. A fluoride ion selective electrode and a reference electrode are located at the other end of the monitoring box. A reagent tank is located on the monitoring box. A reagent pump is located on one side of the reagent tank and connected to the reagent tank and the monitoring box through a hose.

[0011] The sampling mechanism is located at the bottom of the cabinet and is connected to the monitoring box via a hose. The top of the cabinet is equipped with an alarm mechanism and a controller. The stirrer, fluoride ion selective electrode and reference electrode, reagent pump, sampling mechanism and alarm mechanism are all electrically connected to the controller.

[0012] As an improvement, the cabinet is equipped with a partition that divides the cabinet into three storage spaces from top to bottom.

[0013] As an improvement, the monitoring box is located in the middle of the cabinet and is fixedly connected to the partition. The monitoring box has a cuboid structure and is set along the width of the cabinet.

[0014] As an improvement, the height of the overflow plate is less than the height of the monitoring box, and multiple overflow holes are evenly provided on the upper part of the overflow plate. The overflow plate divides the monitoring box into two independent spaces, and the space on the left side of the monitoring box is smaller than the space on its right side.

[0015] As an improvement, the stirrer is located in a separate space on the left side of the monitoring box, and the stirrer is connected to the lower partition of the cabinet and its stirring part is set inside the monitoring box.

[0016] As an improvement, the fluoride ion selective electrode and the reference electrode are located in an independent space on the right side of the monitoring box. The fluoride ion selective electrode is located on the upper part of the monitoring box and extends vertically to the lower part of the monitoring box. The reference electrode is set on the side wall of the monitoring box and is set at a 45° angle with the axis of the fluoride ion selective electrode.

[0017] As an improvement, the sampling mechanism is located at the bottom of the cabinet. The sampling mechanism includes a sampling pump and a filter connected to the sampling pump. The sampling pump and the filter are arranged side by side. The filter is connected to the left end of the monitoring box through a hose.

[0018] As an improvement, the alarm mechanism includes an alarm light and a buzzer, which are located at one corner of the top of the cabinet.

[0019] As an improvement, a power supply is also included, which is located at the other end of the bottom of the cabinet and electrically connected to the controller.

[0020] As an improvement, the front of the cabinet is hinged with a cabinet door.

[0021] The advantages of this utility model compared with the prior art are as follows:

[0022] 1. The pretreatment area and the detection area are physically isolated by the internal partition of the cabinet. Combined with the overflow weir of the overflow plate and the porous overflow structure, it can ensure that the water sample and the reagent are fully mixed and reacted, and avoid the interference of reagent residue in the pretreatment area and turbulence on the electrodes in the detection area. This effectively solves the problem of electrochemical signal instability caused by the crossover of functional areas in traditional devices.

[0023] 2. The fluoride ion selective electrode is vertically immersed in the detection zone at its full depth, and the reference electrode is embedded in the side wall at a 45° angle, forming an asymmetric spatial layout that significantly reduces the difference in liquid junction potential. At the same time, the uniform flow field formed by the overflow hole has a continuous scouring effect on the electrode surface, which inhibits the adhesion of contaminants and interfering ions, and improves the stability of electrode response and detection accuracy.

[0024] 3. By linking the reagent pump with the stirrer, the precise quantitative addition and rapid uniform mixing of pH adjuster or complexing agent can be achieved, thus creating a standardized testing environment and overcoming the problems of delayed pH adjustment and insufficient complexing reaction caused by manual operation in traditional offline pretreatment.

[0025] 4. The cabinet adopts a layered layout, placing the sampling mechanism, monitoring box, and controller in separate spaces. Combined with the detachable filter element and modular electrode installation structure, it facilitates the rapid inspection and replacement of key components, significantly reducing the complexity of operation and maintenance and extending the service life of the device.

[0026] 5. The controller processes electrochemical signals in real time and links with the audible and visual alarm devices to provide immediate warnings when fluoride ion concentration exceeds the standard. At the same time, the built-in filter prevents particulate matter from clogging the flow path, forming a closed-loop control system for the entire process from water sample collection, pretreatment, detection to abnormal alarm, ensuring the reliability of monitoring results. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the front structure of a real-time monitoring and early warning device for fluoride in drinking water according to this utility model. Figure 1 .

[0028] Figure 2 This is a schematic diagram of the front structure of a real-time monitoring and early warning device for fluoride in drinking water according to this utility model. Figure 2 .

[0029] Figure 3 This is a top view of a real-time monitoring and early warning device for fluoride in drinking water according to this utility model.

[0030] Figure 4 yes Figure 3 Sectional view at point AA.

[0031] Figure 5 This is a schematic diagram of the internal structure of a real-time monitoring and early warning device for fluoride in drinking water according to this utility model. Figure 1 .

[0032] Figure 6 This is a schematic diagram of the internal structure of a real-time monitoring and early warning device for fluoride in drinking water according to this utility model. Figure 2 .

[0033] As shown in the figure:

[0034] 1. Cabinet; 2. Monitoring box;

[0035] 3. Sampling mechanism, 301. Sampling pump, 302. Filter;

[0036] 4. Overflow plate, 401, overflow hole;

[0037] 5. Stirrer, 6. Reference electrode, 7. Chemical tank, 8. Chemical pump, 9. Controller, 10. Partition, 11. Placement space, 12. Alarm light, 13. Buzzer, 14. Power supply, 15. Cabinet door, 16. Reference electrode. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the utility model embodiments clearer, the technical solutions of the utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. The components of the utility model embodiments described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0039] In the description of the embodiments of the utility model, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," or "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing the utility model and 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, and therefore should not be construed as a limitation on the utility model. Furthermore, terms such as "first," "second," and "third" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0040] Furthermore, the use of terms such as "horizontal," "vertical," and "sag" does not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0041] In the description of the utility model embodiments, "a plurality of" means at least two.

[0042] In the description of the embodiments of the utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 the utility model according to the specific circumstances.

[0043] As shown in the attached figures, a real-time monitoring and early warning device for fluoride in drinking water includes a cabinet 1, a monitoring box 2, and a sampling mechanism 3.

[0044] In this embodiment, the cabinet 1 is a vertically arranged cuboid structure, and the cabinet 1 is provided with a partition 10 to divide the cabinet 1 into three placement spaces 11 from top to bottom, thereby realizing functional zoning.

[0045] Specifically, a storage space is formed at the top of cabinet 1, which can be used to store medicines, facilitating quick access to medicines on-site and improving work efficiency. At the same time, it allows for centralized storage of medicines, making management and maintenance convenient.

[0046] The central space 11 of the cabinet 1 houses the fixed monitoring box, which serves as the core detection area and is responsible for the pretreatment of water samples, reagent mixing, reaction, and detection of fluoride ion concentration.

[0047] The bottom space 11 of the cabinet 1 accommodates the sampling mechanism 3 and the power supply 14, enabling water sample extraction and equipment power supply.

[0048] Furthermore, the front of the cabinet 1 is hinged with a cabinet door 15, and the tight closure of the cabinet door 1 with the cabinet 1 achieves sealed protection of the internal space of the device.

[0049] Meanwhile, the cabinet door 15 adopts a hinge design, which can be easily opened and closed, making it convenient for operators to operate the inside of the device.

[0050] The monitoring box 2 is located in the middle of the cabinet 1. Specifically, the monitoring box 2 is located in the middle of the cabinet 1 and is fixedly connected to the partition 10. In this embodiment, the monitoring box 2 is firmly fixed to the partition 10 by bolts.

[0051] The monitoring box 2 has a rectangular structure and is set along the width of the cabinet 1. The structure is simple and facilitates the rational use of the internal space.

[0052] The monitoring box 2 is equipped with an overflow plate 4, which divides the monitoring box 2 into two independent spaces to form different functional areas, avoiding mutual interference and improving detection efficiency and accuracy.

[0053] In practical implementation, the independent space on the left side of the monitoring box 2 serves as a water sample pretreatment area to achieve uniform mixing of water sample and reagent;

[0054] The independent space on the right side of the monitoring box 2 serves as the water sample monitoring area, constituting the electrochemical detection area.

[0055] The space on the left side of the monitoring box 2 is smaller than the space on its right side. The independent space on the left side of the monitoring box 2 can accommodate the water sample and the reagent to mix and react. The smaller volume can shorten the reagent diffusion path and improve the mixing efficiency.

[0056] The independent space on the right side of the monitoring box 2 needs to ensure that the electrodes are in full contact with the water sample. A larger volume can accommodate more water samples and reduce the impact of flow fluctuations on the electrochemical signal.

[0057] Meanwhile, physical isolation is achieved through the overflow plate 4 to avoid contamination of the electrodes in the detection zone by the residual reagents in the water sample pretreatment zone, and to prevent the electrochemical environment in the detection zone from being disturbed by the stirring vibration in the pretreatment zone.

[0058] Furthermore, the height of the overflow plate 4 is less than the height of the monitoring box 2, forming an "overflow weir". The water sample must reach the height of the overflow plate 4 before it can enter the detection area, ensuring that the water sample has sufficient residence time in the pretreatment area to fully mix and react with the reagent. The upper part of the overflow plate 4 is uniformly provided with multiple overflow holes 401. When the water sample passes through the overflow holes 401, it is dispersed into multiple fine streams. After entering the detection area, it forms a uniform flow field, avoiding excessive local flow velocity that could cause fluctuations in the electrode response.

[0059] Moreover, the water sample enters the detection area through the overflow hole 401 in the form of multiple fine streams, forming a continuous and uniform flow field around the fluoride ion selective electrode 6. This continuously scours the surfaces of the fluoride ion selective electrode 6 and the reference electrode 16, effectively preventing the deposition and adhesion of pollutants and interfering ions on the electrode surface, maintaining the cleanliness of the electrode surface, and improving detection accuracy.

[0060] Furthermore, the monitoring box 2 is provided with a water outlet at one end near the monitoring area.

[0061] The sampling mechanism 3 is located at the bottom of the cabinet 1 and is connected to the monitoring box 2 via a flexible hose. At the same time, the sampling mechanism 3 is connected to the water source pipeline. The sampling mechanism 3 extracts water samples from the water source pipeline and transports them to the water sample pretreatment area of ​​the monitoring box 2.

[0062] The sampling mechanism 3 is located at the bottom of the cabinet 1. The sampling mechanism 3 includes a sampling pump 301 and a filter 302 connected to the sampling pump 301. The sampling pump 301 and the filter 302 are arranged side by side. The sampling pump 301 is connected to a connecting pipe extending to the outside of the cabinet 1 to form a water inlet, so as to realize the connection with the water source pipeline. The filter 302 removes particulate matter to ensure that the water sample entering the monitoring box 2 is clean and to prevent clogging of the pipeline in the monitoring box 2 or interference with electrode detection. In this embodiment, the filter element is a PP melt-blown filter element.

[0063] The filter 302 is connected to the left end of the monitoring box 2 via a hose, and the filtered water sample is transported to the monitoring box 2.

[0064] In this embodiment, the filter 302 includes an outer shell fixedly connected to the cabinet 1 and a filter element disposed within the outer shell. The outer shell is provided with a detachable cover, which cooperates with the filter element to facilitate regular cleaning or replacement of the filter element.

[0065] The monitoring box 2 is equipped with a reagent tank 7, which can store pH adjusters or complexing agents to adjust the pH value of the water sample to be tested, ensuring the stability of the free state of fluoride ions and reducing detection errors caused by pH fluctuations; or to form stable complexes with metal ions to shield metal ions (such as Al). 3 +, Fe 3+ Interference.

[0066] In this embodiment, the pH adjuster can be selected from hydrochloric acid or sodium hydroxide solution depending on the water quality, and the complexing agent can be selected from fluorine reagent or lanthanum nitrate.

[0067] A reagent pump 8 is provided on one side of the reagent tank 7 and the monitoring box 2 via a hose; the reagent in the reagent tank 7 is transported to the water sample pretreatment area in the independent space on the left side of the monitoring box 2 through the reagent pump 8 to achieve mixing with the water sample to be tested.

[0068] The monitoring box 2 is equipped with a stirrer 5 at one end to promote uniform mixing of water sample and reagent, thereby improving detection accuracy.

[0069] The stirrer 5 is located in the independent space on the left side of the monitoring box 2. The stirrer 5 is connected to the lower partition 10 inside the cabinet 1 and its stirring part is set inside the monitoring box 2.

[0070] In this embodiment, the stirrer 5 is a magnetic stirrer.

[0071] The right end of the monitoring box 2 is provided with a fluoride ion selective electrode 6 and a reference electrode 16. In practice, the fluoride ion selective electrode 6 and the reference electrode 16 are located in an independent space on the right side of the monitoring box 2. The fluoride ion selective electrode 6 is located on the upper part of the monitoring box 2 and extends vertically to the lower part of the monitoring box 2, in contact with the water sample to be monitored. The reference electrode 16 is set on the side wall of the monitoring box 2 and is set at a 45° angle with the axis of the fluoride ion selective electrode 6, forming a stable electrochemical system.

[0072] Specifically, the fluoride ion selective electrode 6 vertically penetrates the right detection area of ​​the monitoring box 2, forming a top-down full-depth monitoring layout to ensure full contact between the electrode sensitive membrane and the water sample, thereby enabling the monitoring of the fluoride ion concentration in the water sample. The reference electrode 16 is embedded in the side wall of the monitoring box 2 at a 45° angle, forming a spatial angle with the axis of the fluoride ion selective electrode 6 to construct an asymmetric electric field distribution.

[0073] In practice, the fluoride ion selective electrode 6 comes into contact with the water sample to generate a potential related to the fluoride ion concentration. The reference electrode 16 provides a stable reference potential, and a potential difference is formed between the two. This potential difference is transmitted to the controller 9, which receives the potential difference signal, processes it, and converts the potential difference into a fluoride ion concentration value.

[0074] The top of the cabinet 1 is equipped with an alarm mechanism and a controller 9. The alarm mechanism includes an alarm light 12 and a buzzer 13, which are located at one corner of the top of the cabinet 1.

[0075] During implementation, when the fluoride ion selective electrode 6 detects that the fluoride ion concentration in the water sample exceeds the preset threshold, the controller 9 will trigger the alarm mechanism, the alarm light 12 will light up, and the buzzer 13 will emit an alarm sound to remind the operator to handle the situation in a timely manner.

[0076] The stirrer 5, fluoride ion selective electrode 6 and reference electrode 16, reagent pump 8, sampling mechanism 3 and alarm mechanism are all electrically connected to the controller 9.

[0077] The controller 9 serves as the control center of the entire device, responsible for coordinating and managing the operation of various key components. Specifically:

[0078] 1) Data Acquisition and Processing:

[0079] The system receives detection signals from the fluoride ion selective electrode 6 and the reference electrode 16, and processes and analyzes them.

[0080] Based on the processing results, the concentration of fluoride ions in the water sample was calculated.

[0081] 2) Control and Regulation:

[0082] According to the preset program and parameters, the stirrer 5, reagent pump 8, sample suction mechanism 3 and other components are controlled and adjusted.

[0083] To automate the operation of the device and improve detection efficiency and accuracy.

[0084] 3) Alarm and Protection:

[0085] The monitoring device monitors the operating status and triggers an alarm mechanism when an abnormality is detected (such as excessive fluoride ion concentration or component failure).

[0086] It also includes a power supply 14, which is located at the other end of the bottom of the cabinet 1 and is electrically connected to the controller 9 to supply power to the device.

[0087] In this embodiment, the sampling pump 301 is a peristaltic pump of model BT600F, the reagent pump 8 is a peristaltic pump of model BT100S, the stirrer 5 is a magnetic stirrer of model C-MAG HS 7, the fluoride ion selective electrode 6 is a fluoride ion selective electrode of model DXF-1, the reference electrode 16 is a reference electrode of model 217, the controller 9 is a PLC of model S7-1200, the alarm light 12 is a 24V red LED warning light, and the buzzer 13 is a 24V 85dB active buzzer.

[0088] In specific implementation of this utility model:

[0089] 1. Water sample collection and pretreatment:

[0090] The controller 9 controls the start of the sampling pump 301, which draws water samples from the water source pipeline through the connecting pipe, filters them through the filter 302, and then delivers them to the pretreatment area of ​​the monitoring box 2 through the hose.

[0091] 2. Mixing of agents:

[0092] The controller 9 controls the start of the reagent pump 8, which quantitatively injects the pH adjuster (hydrochloric acid / sodium hydroxide) or complexing agent (lanthanum nitrate / fluorine reagent) from the reagent tank 7 into the pretreatment area.

[0093] At the same time, the controller 9 controls the stirrer 5 to start magnetic stirring to stir the mixed water sample and ensure that the reagent and water sample are fully mixed.

[0094] 3. Fluoride ion detection:

[0095] The mixed water sample flows into the monitoring area through the overflow hole 401 on the overflow plate 4.

[0096] The fluoride ion selective electrode 6 is vertically immersed in the detection area. Its sensitive membrane undergoes ion exchange with F- in the water sample, generating a potential signal related to the F- concentration. The reference electrode 16 is embedded in the side wall at a certain angle, forming an electric field with the fluoride ion selective electrode 6. A potential difference is formed between the two, which is transmitted to the controller 9. The controller 9 receives the potential difference signal, processes it, and converts the potential difference into a fluoride ion concentration value.

[0097] 4. Data processing and alarms:

[0098] When the fluoride ion concentration exceeds the standard, the alarm mechanism (alarm light 12 and buzzer 13) is triggered to issue an alarm, achieving a dual warning of sound and light.

[0099] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A real-time monitoring and early warning device for fluoride in drinking water, characterized in that: It includes a cabinet (1), a monitoring box (2), and a sampling mechanism (3); The monitoring box (2) is located in the middle of the cabinet (1). The monitoring box (2) is equipped with an overflow plate (4). One end of the monitoring box (2) is equipped with a stirrer (5). The other end of the monitoring box (2) is equipped with a fluoride ion selective electrode (6) and a reference electrode (16). The monitoring box (2) is equipped with a reagent tank (7). One side of the reagent tank (7) is equipped with a reagent pump (8) that is connected to the reagent tank (7) and the monitoring box (2) through a hose. The sampling mechanism (3) is located at the bottom of the cabinet (1) and is connected to the monitoring box (2) via a hose. The top of the cabinet (1) is equipped with an alarm mechanism and a controller (9). The stirrer (5), fluoride ion selective electrode (6) and reference electrode (16), reagent pump (8), sampling mechanism (3) and alarm mechanism are all electrically connected to the controller (9).

2. The real-time monitoring and early warning device for fluoride in drinking water according to claim 1, characterized in that: The cabinet (1) is provided with a partition (10) that divides the cabinet (1) into three storage spaces (11) from top to bottom.

3. The real-time monitoring and early warning device for fluoride in drinking water according to claim 2, characterized in that: The monitoring box (2) is located in the middle of the cabinet (1) and is fixedly connected to the partition (10). The monitoring box (2) has a cuboid structure and is set along the width direction of the cabinet (1).

4. The real-time monitoring and early warning device for fluoride in drinking water according to claim 3, characterized in that: The height of the overflow plate (4) is less than the height of the monitoring box (2). The upper part of the overflow plate (4) is evenly provided with multiple overflow holes (401). The overflow plate (4) divides the monitoring box (2) into two independent spaces. The space on the left side of the monitoring box (2) is smaller than the space on its right side.

5. The real-time monitoring and early warning device for fluoride in drinking water according to claim 4, characterized in that: The stirrer (5) is located in the independent space on the left side of the monitoring box (2). The stirrer (5) is connected to the lower partition (10) inside the cabinet (1) and its stirring part is set inside the monitoring box (2).

6. The real-time monitoring and early warning device for fluoride in drinking water according to claim 4, characterized in that: The fluoride ion selective electrode (6) and the reference electrode (16) are located in an independent space on the right side of the monitoring box (2). The fluoride ion selective electrode (6) is located on the upper part of the monitoring box (2) and extends vertically to the lower part of the monitoring box (2). The reference electrode (16) is set on the side wall of the monitoring box (2) and is set at a 45° angle with the axis of the fluoride ion selective electrode (6).

7. The real-time monitoring and early warning device for fluoride in drinking water according to claim 1, characterized in that: The sampling mechanism (3) is located at the bottom of the cabinet (1). The sampling mechanism (3) includes a sampling pump (301) and a filter (302) connected to the sampling pump (301). The sampling pump (301) and the filter (302) are arranged side by side. The filter (302) is connected to the left end of the monitoring box (2) through a hose.

8. The real-time monitoring and early warning device for fluoride in drinking water according to claim 1, characterized in that: The alarm mechanism includes an alarm light (12) and a buzzer (13), which are located at one corner of the top of the cabinet (1).

9. The real-time monitoring and early warning device for fluoride in drinking water according to claim 1, characterized in that: It also includes a power supply (14), which is located at the other end of the bottom of the cabinet (1) and is electrically connected to the controller (9).

10. The real-time monitoring and early warning device for fluoride in drinking water according to claim 1, characterized in that: The cabinet (1) has a cabinet door (15) hinged to the front.

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