Surface water total phosphorus on-line monitor

Abstract

The application provides a kind of ground water total phosphorus on-line monitor, relating to optical detection technical field, including monitoring box, drive mechanism, sampling assembly and optical detection component, one end of the monitoring box is connected with discharge pipeline, the side of the monitoring box is provided with color reagent drop opening, the other end of the monitoring box is welded with extension plate, the surface of the extension plate is provided with clamping groove, the inside of the monitoring box is installed with drive mechanism, one end of the drive mechanism is inserted with lifting rod, the application can obtain sample from different positions and depths in the water area to be measured, so as to ensure that the obtained sample can evenly reflect the average total phosphorus content level of a larger range of water area, so that the final detection result is more reliable and effective, and the surface of the sampling sleeve can also be cleaned regularly and automatically with the drive mechanism, without additional agitation structure, so that a large amount of residues will not be left between multiple detection processes.

Description

Technical Field

[0001] This invention relates to the field of optical detection technology, specifically to an online monitor for total phosphorus in surface water. Background Technology

[0002] Total phosphorus content is a key indicator for assessing the degree of eutrophication in water bodies. Excessive phosphorus stimulates abnormal algal growth, leading to decreased water transparency, reduced dissolved oxygen, and ultimately, ecological imbalance. Eutrophication is particularly pronounced in enclosed water bodies (such as lakes and reservoirs), potentially causing algal decay, water quality deterioration, and even loss of water body function. Therefore, regular monitoring of total phosphorus content in surface water is necessary.

[0003] Existing surface water total phosphorus online monitoring instruments can only sample from fixed points and depths in the water body to be tested after installation. This makes it difficult for the obtained samples to uniformly reflect the average total phosphorus content level of a large area of ​​water. On the other hand, the subsequent mixing of the extracted samples with the colorimetric reagent and the optical detection process are also prone to interference with the detection results due to the fixed detection position, uneven mixing, or even residual problems of the previously mixed structure adhering to the surface. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide an online total phosphorus monitoring instrument for surface water, thereby solving the problems mentioned in the background art. The present invention can obtain samples from different locations and depths in the water body to be tested, thus ensuring that the obtained samples can uniformly reflect the average total phosphorus content level of a large area of ​​water, making the final detection results more reliable and effective. At the same time, it can also work with the drive mechanism to automatically clean the surface of the sampling sleeve periodically, eliminating the need for an additional agitation structure, and thus preventing a large amount of residue from remaining between multiple detection processes.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an online monitoring instrument for total phosphorus in surface water, comprising an online monitoring instrument body, the online monitoring instrument body including a monitoring box, a drive mechanism, a sampling component, and an optical detection component. One end of the monitoring box is connected to a discharge pipe, and a colorimetric reagent dispensing port is provided on the side of the monitoring box. An extension plate is welded to the other end of the monitoring box, and a clamping groove is provided on the surface of the extension plate. The drive mechanism is installed inside the monitoring box, and a lifting rod is inserted into one end of the drive mechanism. A sampling component is provided at the end of the lifting rod. An optical detection component is also installed inside the monitoring box. A support plate is welded to the bottom of the end of the extension plate inserted into the inner side of the monitoring box. A water pump is screwed onto the surface of the support plate. One end of the water pump is connected to a sampling pipe, and the end of the sampling pipe is connected to the sampling component. The water pump delivers the sample to be tested to the interior of the optical detection component through the sampling component. The other end of the optical detection component is connected to the discharge pipe. The drive mechanism covers the surface of the extension plate.

[0006] Furthermore, the drive mechanism includes a motor, a drive shaft, and a transmission rod. The output end of the motor is fitted with the drive shaft, and a gear is keyed to the surface of the drive shaft. An end plate is integrally formed at the end of the transmission rod, and a top support is integrally formed at the bottom of one end of the transmission rod. The transmission rod presses against the surface of the extension plate.

[0007] Furthermore, the outer casing of the motor is screwed onto the surface of the monitoring box, the end of the drive shaft is embedded into the inner wall of the monitoring box via a bearing, there are two gears, and the surface of the transmission rod is provided with a rack.

[0008] Furthermore, each gear meshes with a corresponding rack, the top support surrounds the side of the extension plate, and the surface of the top support is in contact with the bottom surface of the extension plate. Holes are provided at both ends of the monitoring box, and the two ends of the transmission rod move through the holes at the ends of the monitoring box.

[0009] Furthermore, the sampling assembly includes an extraction sleeve, a sealing plate, a perforated plate, and spiral blades. The bottom of the end plate is integrally formed with a locking block. The lifting rod extends upward from the middle of the locking block. Both the locking block and the sampling pipe are embedded inside the clamping groove.

[0010] Furthermore, a limit ring is welded to the surface of the lifting rod, and a base plate is welded to the bottom end of the lifting rod. A mating bearing is embedded in the surface of the base plate, a sealing plate is installed at the top of the mating bearing, a scraper is installed on the side of the sealing plate, and a extraction hole is opened on the side of the extraction sleeve. The scraper presses against the surface of the extraction sleeve.

[0011] Furthermore, a central shaft is inserted in the middle of the sealing plate, and a perforated plate and spiral blades are installed on the surface of the central shaft. The spiral blades are positioned above the perforated plate. A fixing frame is welded to the inner wall of the extraction sleeve, and a spring rod is welded to the bottom of the fixing frame. The bottom end of the spring rod is inserted into the interior of the central shaft, and the two ends of the spring on the surface of the spring rod are welded and fixed to the fixing frame and the central shaft, respectively. The sampling pipe is connected to the interior of the extraction sleeve.

[0012] Furthermore, a lower hanging plate is welded to the bottom of the transmission rod, and a driven plate is integrally formed at the bottom end of the lower hanging plate. An optical probe is screwed to one end of the surface of the driven plate. A one-way pipe is connected to the inner side of the colorimetric reagent dispensing port. A mixing interlayer is sleeved in the middle of the one-way pipe, and the surface of the one-way pipe is connected to the shell part of the mixing interlayer through a torsion spring.

[0013] Furthermore, the end of the water pump is connected to the interior of the mixing interlayer via a connecting hose, the side of the mixing interlayer is connected to the light-transmitting detection layer via a pipe, and multiple elastic paddles are inserted into the top of the driven plate.

[0014] Furthermore, a vibrating plate is provided at the bottom of the hybrid interlayer, the elastic paddle is used to strike the side of the vibrating plate, and the top of the optical probe is directed toward the bottom surface of the light-transmitting detection layer.

[0015] The beneficial effects of this invention are:

[0016] This surface water total phosphorus online monitoring instrument can obtain samples from different locations and depths in the water body through the sampling component at the end, thereby ensuring that the obtained samples can uniformly reflect the average total phosphorus content level of a large area of ​​water, making the final test results more reliable and effective. At the same time, it can also work with the drive mechanism to automatically clean the surface of the sampling sleeve periodically.

[0017] The surface water total phosphorus online monitor is equipped with optical detection components and a drive mechanism inside the monitoring box. The drive mechanism can achieve the oscillation effect of the entire mixing jacket after the sample is drawn into the mixing jacket, in conjunction with the horizontal swing of the bottom driven plate. This allows the injected colorimetric reagent to be fully mixed with the sample under the oscillation effect. Moreover, the internal structure of the mixing jacket is simple and does not require an additional stirring structure, thus ensuring that no large amount of residue remains between multiple detection processes.

[0018] This surface water total phosphorus online monitoring instrument also uses a drive mechanism to move the bottom optical probe horizontally, so that the sample to be tested after mixing and being transported to the light-transmitting detection layer can be detected and processed by the optical probe at different positions. Therefore, the same batch of samples can also obtain more effective and reliable content data through multiple detection areas. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the external structure of an online monitoring instrument for total phosphorus in surface water according to the present invention;

[0020] Figure 2 This is a schematic diagram of the internal structure of an online monitoring instrument for total phosphorus in surface water according to the present invention;

[0021] Figure 3 This is a schematic diagram of the drive mechanism of the present invention;

[0022] Figure 4 This is a schematic diagram of the sampling component of the present invention;

[0023] Figure 5 This is a diagram showing the internal structure of the sampling component of the present invention;

[0024] Figure 6 This is a schematic diagram of the optical detection component of the present invention;

[0025] Figure 7 This is a structural diagram of the hybrid sandwich portion of the present invention;

[0026] In the diagram: 1. Monitoring box; 2. Extension plate; 3. Drive mechanism; 4. Sampling assembly; 5. Colorimetric reagent dispensing port; 6. Discharge pipe; 7. Optical detection assembly; 8. Clamping groove; 9. Motor; 10. Drive shaft; 11. Gear; 12. Transmission rod; 13. Rack; 14. Lower hanging plate; 15. Optical probe; 16. Driven plate; 17. Elastic lever; 18. End plate; 19. Locking block; 20. Lifting rod; 21. 21. Limiting ring; 22. Top support frame; 23. Sampling pipe; 24. Extraction sleeve; 25. Extraction hole; 26. Base plate; 27. Connecting bearing; 28. Sealing plate; 29. ​​Scraper; 30. Hollow plate; 31. Central shaft; 32. Spiral blade; 33. Spring rod; 34. Fixing frame; 35. Water pump; 36. Mixing interlayer; 37. Vibrating plate; 38. Light-transmitting detection layer; 39. Connecting flexible hose; 40. One-way pipe. Detailed Implementation

[0027] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0028] Please see Figures 1 to 7The present invention provides the following technical solution: an online monitoring instrument for total phosphorus in surface water, comprising an online monitoring instrument body, the online monitoring instrument body including a monitoring box 1, a drive mechanism 3, a sampling component 4, and an optical detection component 7, one end of the monitoring box 1 being connected to a discharge pipe 6, a colorimetric reagent inlet 5 being provided on the side of the monitoring box 1, an extension plate 2 being welded to the other end of the monitoring box 1, the surface of the extension plate 2 being provided with a clamping groove 8, the drive mechanism 3 being installed inside the monitoring box 1, and a lifting rod 20 being inserted into one end of the drive mechanism 3. A sampling component 4 is installed at the end of the monitoring box 1, and an optical detection component 7 is also installed inside the monitoring box 1. A support plate is welded to the bottom of one end of the extension plate 2, which is inserted into the inner side of the monitoring box 1. A water pump 35 is screwed onto the surface of the support plate. One end of the water pump 35 is connected to a sampling pipe 23, and the end of the sampling pipe 23 is partially connected to the sampling component 4. The water pump 35 transports the sample to be tested into the optical detection component 7 through the sampling component 4. The other end of the optical detection component 7 is partially connected to a discharge pipe 6. The drive mechanism 3 covers the surface of the extension plate 2. This monitoring instrument is installed around the water area to be tested and is used to monitor the total phosphorus content of surface water within a fixed range.

[0029] In use, the monitoring box 1 is directly erected around the water body to be tested, extending above it via the extension plate 2. Then, by activating the internal water pump 35 and drive mechanism 3, the sampling component 4 at the end moves and rises and falls along the water body to achieve its designated position and sample the water within that area. The water sample is then pumped by the water pump 35 into the optical detection component 7. Simultaneously, a colorimetric reagent is delivered through the colorimetric reagent inlet 5 into the mixing layer 36 within the optical detection component 7. The drive mechanism 3 at the top controls the mixing layer 36 to oscillate, ensuring thorough mixing of the sample and the colorimetric reagent. The resulting mixture is then delivered into the light-transmitting detection layer 38, where the built-in optical probe 15 detects the total phosphorus content. The optical probe 15 and the colorimetric reagent are existing, mature technologies and are not within the scope of this invention; therefore, their specific principles and parameters are not detailed here.

[0030] In this embodiment, the drive mechanism 3 includes a motor 9, a drive shaft 10, and a transmission rod 12. The output end of the motor 9 is fitted with the drive shaft 10, and a gear 11 is keyed to the surface of the drive shaft 10. An end plate 18 is integrally formed at the end of the transmission rod 12, and a top support frame 22 is integrally formed at the bottom of one end of the transmission rod 12. The transmission rod 12 presses against the surface of the extension plate 2. The outer casing of the motor 9 is screwed onto the surface of the monitoring box 1. The end of the drive shaft 10 is embedded into the inner wall of the monitoring box 1 via a bearing. There are two gears 11, and a rack 13 is provided on the surface of the transmission rod 12. Each gear 11 meshes with a corresponding rack 13. The top support frame 22 surrounds the side of the extension plate 2, and the surface of the top support frame 22 is in contact with the bottom surface of the extension plate 2. Holes are provided at both ends of the monitoring box 1, and the two ends of the transmission rod 12 are inserted and moved through the holes at the ends of the monitoring box 1. Inside the monitoring box 1, there is an optical detection component 7 and a drive mechanism 3. The drive mechanism 3 can achieve the oscillation effect of the entire mixing layer 36 after the sample is drawn into the mixing layer 36, in conjunction with the horizontal swing of the bottom driven plate 16. This allows the injected colorimetric reagent to be fully mixed with the sample under the action of oscillation. The internal structure of the mixing layer 36 is simple and does not require an additional stirring structure, thus preventing a large amount of residue from remaining between multiple detection processes.

[0031] Specifically, after starting the motor 9, the motor 9 drives the drive shaft 10 to rotate, and the drive shaft 10 drives the two gears 11 on the surface to rotate synchronously. The gears 11 mesh with the rack 13 on the transmission rod 12. Therefore, by rotating the motor 9 in the forward and reverse directions, the rack 13 can be driven to slide laterally back and forth. With the help of the horizontal back and forth movement of the transmission rod 12, the horizontal and vertical movement of the end sampling component 4 can be achieved. The transmission rod 12 pushes the sampling pipe 23 from below the extension plate 2 through the top support 22 at the end, which can achieve the purpose of adjusting the sampling position. At the same time, the driven plate 16 is moved by the bottom hanging plate 14 to achieve the purpose of mixing the mixed interlayer 36 area and the purpose of detecting the light-transmitting detection layer 38 area.

[0032] In this embodiment, the sampling assembly 4 includes an extraction sleeve 24, a sealing plate 28, a perforated plate 30, and a spiral blade 32. A locking block 19 is integrally formed at the bottom of the end plate 18. The lifting rod 20 extends upward from the middle of the locking block 19. Both the locking block 19 and the sampling pipe 23 are embedded inside the clamping groove 8. A limiting protrusion ring 21 is welded to the surface of the lifting rod 20, and a base plate 26 is welded to the bottom end of the lifting rod 20. A mating bearing 27 is embedded in the surface of the base plate 26. A sealing plate 28 is installed at the top of the mating bearing 27. A scraper 29 is installed on the side of the sealing plate 28. An extraction hole 25 is opened on the side of the extraction sleeve 24, and the scraper 29 presses against the surface of the extraction sleeve 24. A central shaft 31 is inserted into the middle of the sealing plate 28. A perforated plate 30 and a spiral blade 32 are mounted on the surface of the central shaft 31. The spiral blade 32 is positioned above the perforated plate 30. A fixing frame 34 is welded to the inner wall of the extraction sleeve 24. A spring rod 33 is welded to the bottom of the fixing frame 34. The bottom end of the spring rod 33 is inserted into the interior of the central shaft 31, and the two ends of the spring on the surface of the spring rod 33 are welded and fixed to the fixing frame 34 and the central shaft 31, respectively. The sampling pipe 23 is connected to the interior of the extraction sleeve 24. The sampling component 4 at the end can obtain samples from different locations and depths in the water area to be tested, thereby ensuring that the obtained samples can uniformly reflect the average total phosphorus content level of a large area of ​​water, making the final test results more reliable and effective. At the same time, it can also work with the drive mechanism 3 to automatically clean the surface of the sampling sleeve periodically.

[0033] Specifically, the bottom of the extraction sleeve 24 is movably connected to the base plate 26 via a bearing. The top sampling pipe 23 is secured inside the clamping groove 8, thus, with the help of the lifting rod 20, the entire extraction sleeve 24 can always remain vertical. Furthermore, by using the top plate to block and push from the bottom of the sampling pipe 23, the horizontal and depth positions of the end extraction sleeve 24 relative to the extension plate 2 can be changed. After starting the water pump 35, water from the outside of the extraction sleeve 24 is drawn into the interior through the side extraction hole 25 and then transported along the sampling pipe 23 to the optical detection assembly 7. When the drive mechanism 3 controls the transmission rod 12 to move to the farthest point, the sampling pipe 23 is pushed to its furthest position. At this time, the lifting rod 20... 0. Due to the upward movement of the extraction sleeve 24, the bottom limiting protrusion 21 will be stuck at the bottom of the locking block 19. At this time, if the sampling pipe 23 is pulled, the fixing frame 34 and spring rod 33 will move upward, causing the bottom sealing plate 28 to move downward from the inside of the sampling sleeve. In this state, the water outside the extraction sleeve 24 will directly enter the extraction sleeve 24 from around the opened sealing plate 28. During this process, the water flows upward from the inside of the hollow plate 30, causing the spiral blade 32 to rotate. In conjunction with the central shaft 31, the bottom sealing plate 28 will rotate, and the extraction hole 25 on the outside of the extraction sleeve 24 can be scraped and cleaned by the scraper 29 on the side.

[0034] In this embodiment, a lower hanging plate 14 is welded to the bottom of the transmission rod 12. A driven plate 16 is integrally formed at the bottom end of the lower hanging plate 14. An optical probe 15 is screwed to one end of the surface of the driven plate 16. A one-way pipe 40 is connected to the inner side of the colorimetric reagent dispensing port 5. A mixing interlayer 36 is sleeved in the middle of the one-way pipe 40, and the surface of the one-way pipe 40 is connected to the shell part of the mixing interlayer 36 through a torsion spring. The end of the water pump 35 is connected to the inside of the mixing interlayer 36 through a connecting hose 39. The side of the mixing interlayer 36 is connected to the light transmission detection layer 38 through a pipe. Multiple elastic paddles 17 are inserted into the top of the driven plate 16. A vibrating plate 37 is provided at the bottom of the mixing interlayer 36. The elastic paddles 17 are used to impact the side of the vibrating plate 37. The top of the optical probe 15 shines towards the bottom surface of the light transmission detection layer 38. Similarly, with the help of the drive mechanism 3, the bottom optical probe 15 can also be moved horizontally, so that the sample to be tested after mixing and being transported to the light-transmitting detection layer 38 can be detected and processed by the optical probe 15 at different positions. Therefore, the same batch of samples can also obtain more effective and reliable content data through multiple detection areas.

[0035] Specifically, after the sample is transported into the mixing jacket 36 by the water pump 35, the colorimetric reagent is also transported into the mixing jacket 36 through the colorimetric reagent inlet 5 and the one-way pipe 40. At this time, the water pump 35 is turned off, and only the driven mechanism 3 drives the driven plate 16 at the bottom to move horizontally. With the help of the elastic paddle 17 at the top, the vibrating plate 37 is impacted. With the help of the torsion spring at the top, the entire mixing jacket 36 vibrates rapidly around the one-way pipe 40 at the top, thereby accelerating the mixing of the internal sample. After the mixed sample is transported into the light-transmitting detection layer 38, it can also move horizontally back and forth with the help of the driven plate 16 to drive the optical probe 15 from different areas at the bottom of the light-transmitting detection layer 38 to achieve the purpose of monitoring the total phosphorus content of the mixed solution.

[0036] The foregoing has shown and described the basic principles and main features of the present invention and its advantages. It will be apparent to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention.

[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An online monitoring instrument for total phosphorus in surface water, comprising an online monitoring instrument body, characterized in that: The online monitoring instrument body includes a monitoring box (1), a drive mechanism (3), a sampling component (4), and an optical detection component (7). One end of the monitoring box (1) is connected to a discharge pipe (6). A colorimetric reagent dispensing port (5) is provided on the side of the monitoring box (1). An extension plate (2) is welded to the other end of the monitoring box (1). A clamping groove (8) is provided on the surface of the extension plate (2). The drive mechanism (3) is installed inside the monitoring box (1). A lifting rod (20) is inserted into one end of the drive mechanism (3). A sampling component (4) is provided at the end of the lifting rod (20). The monitoring box (1) The interior of the monitoring box (1) is also equipped with an optical detection assembly (7). The extension plate (2) is inserted into the bottom of one end of the monitoring box (1) and a support plate is welded thereon. A water pump (35) is screwed onto the surface of the support plate. One end of the water pump (35) is connected to a sampling pipe (23), and the end of the sampling pipe (23) is connected to the sampling assembly (4). The water pump (35) transports the sample to be tested into the interior of the optical detection assembly (7) through the sampling assembly (4). The other end of the optical detection assembly (7) is connected to the discharge pipe (6). The drive mechanism (3) covers the surface of the extension plate (2). The sampling assembly... Component (4) includes a pull-out sleeve (24), a sealing plate (28), a hollow plate (30), and a spiral blade (32). A limit ring (21) is welded to the surface of the lifting rod (20), and a base plate (26) is welded to the bottom end of the lifting rod (20). A mating bearing (27) is embedded in the surface of the base plate (26), and a sealing plate (28) is installed at the top of the mating bearing (27). A scraper (29) is installed on the side of the sealing plate (28). A pull-out hole (25) is opened on the side of the pull-out sleeve (24). The scraper (29) presses against the surface of the pull-out sleeve (24). The sealing plate (28) A central shaft (31) is inserted in the middle of the central shaft (31). A perforated plate (30) and a spiral blade (32) are installed on the surface of the central shaft (31). The spiral blade (32) is set above the perforated plate (30). A fixing frame (34) is welded on the inner wall of the extraction sleeve (24). A spring rod (33) is welded to the bottom of the fixing frame (34). The bottom end of the spring rod (33) is inserted into the interior of the central shaft (31). The two ends of the spring on the surface of the spring rod (33) are welded and fixed to the fixing frame (34) and the central shaft (31) respectively. The sampling pipe (23) is connected to the interior of the extraction sleeve (24).

2. The surface water total phosphorus online monitoring instrument according to claim 1, characterized in that: The drive mechanism (3) includes a motor (9), a drive shaft (10) and a transmission rod (12). The output end of the motor (9) is fitted with the drive shaft (10). The surface of the drive shaft (10) is keyed with a gear (11). The end of the transmission rod (12) is integrally formed with an end plate (18). A top support frame (22) is integrally formed at the bottom of one end of the transmission rod (12). The transmission rod (12) presses against the surface of the extension plate (2).

3. The surface water total phosphorus online monitoring instrument according to claim 2, characterized in that: The outer casing of the motor (9) is screwed onto the surface of the monitoring box (1), and the end of the drive shaft (10) is embedded into the inner wall of the monitoring box (1) through a bearing. There are two gears (11), and the surface of the transmission rod (12) is provided with a rack (13).

4. The surface water total phosphorus online monitoring instrument according to claim 3, characterized in that: Each gear (11) meshes with a corresponding rack (13). The top support (22) surrounds the side of the extension plate (2), and the surface of the top support (22) is in contact with the bottom surface of the extension plate (2). Holes are provided at both ends of the monitoring box (1), and the two ends of the transmission rod (12) move through the holes at the ends of the monitoring box (1).

5. The surface water total phosphorus online monitoring instrument according to claim 2, characterized in that: The bottom of the end plate (18) is integrally formed with a locking block (19), and the lifting rod (20) extends upward from the middle position of the locking block (19). The locking block (19) and the sampling pipe (23) are both embedded in the inside of the clamping groove (8).

6. The surface water total phosphorus online monitoring instrument according to claim 2, characterized in that: The bottom of the transmission rod (12) is welded with a lower hanging plate (14), and the bottom end of the lower hanging plate (14) is integrally formed with a driven plate (16). An optical probe (15) is screwed to one end of the surface of the driven plate (16). A one-way pipe (40) is connected to the inside of the colorimetric reagent dispensing port (5). A mixing interlayer (36) is sleeved in the middle of the one-way pipe (40), and the surface of the one-way pipe (40) is connected to the shell part of the mixing interlayer (36) through a torsion spring.

7. The surface water total phosphorus online monitoring instrument according to claim 6, characterized in that: The end of the water pump (35) is connected to the interior of the mixing layer (36) via a connecting hose (39). The side of the mixing layer (36) is connected to the light transmission detection layer (38) via a pipe. Multiple elastic paddles (17) are inserted into the top of the driven plate (16).

8. The surface water total phosphorus online monitoring instrument according to claim 7, characterized in that: The bottom of the hybrid interlayer (36) is provided with a vibrating plate (37), the elastic paddle (17) is used to strike the side of the vibrating plate (37), and the top of the optical probe (15) is directed toward the bottom surface of the light-transmitting detection layer (38).

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