Water pollution on-line monitoring device

Abstract

The application discloses a kind of water pollution on-line monitoring equipment, it is related to water detection technical field, including floating island and monitoring mechanism, sample reservation mechanism is arranged in floating island, floating island includes float, balance cover and upper support, float is arranged with air chamber, equipment cabin and sample reservation chamber, monitoring mechanism includes detector and monitoring probe, detector is installed in equipment cabin, monitoring probe is fixedly installed at the bottom of float, sample reservation mechanism includes rotary table, test tube rack, negative pressure test tube, sampling station, puncture needle, suction hose and telescopic cylinder, sample reservation mechanism is installed in sample reservation chamber.The application has the advantages of automatic sample reservation, active posture balance, sample identification and light protection, autonomous position adjustment, solves the problem that existing float type monitoring equipment cannot reserve sample in time, weak wind and wave resistance, maintenance difficulty and lack of dynamic control ability.

Description

Technical Field

[0001] This invention relates to the field of water detection technology, specifically to an online water pollution monitoring device. Background Technology

[0002] With rapid industrialization and urbanization, water pollution has become increasingly serious, posing a significant threat to the ecological environment and human health. To achieve dynamic and precise monitoring of water quality, online water pollution monitoring technology has become an important development direction in the field of environmental monitoring. Traditional water quality monitoring relies heavily on manual sampling and laboratory analysis, which suffers from drawbacks such as long sampling cycles, slow response times, high labor costs, and susceptibility to human interference, making it difficult to meet the needs for rapid early warning and source tracing of sudden pollution events.

[0003] In recent years, online water quality monitoring equipment based on buoy platforms has been widely used in rivers, lakes, reservoirs, and nearshore waters due to its advantages such as flexible deployment and long-term in-situ operation. However, existing buoy-based monitoring systems generally suffer from the following technical bottlenecks: most devices only have real-time data acquisition capabilities and lack automatic sampling capabilities. Once monitoring data is abnormal, it is impossible to obtain water samples for the corresponding time period for re-inspection or third-party verification in a timely manner, affecting the accurate determination of pollution incidents and the tracing of responsibility; under complex weather conditions, buoys are prone to tilting or even capsizing, causing the monitoring probe to detach from the water surface or the equipment to be damaged, seriously affecting the continuity of monitoring and the reliability of data. Furthermore, buoys are difficult to achieve autonomous position migration, limiting the equipment's autonomous deployment and dynamic monitoring capabilities in vast water areas. Therefore, an online water pollution monitoring device is needed to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide an online water pollution monitoring device that has the advantages of automatic sample retention, active attitude balancing, sample identification and light protection, and autonomous position adjustment. It solves the problems of existing buoy-type monitoring devices, such as inability to retain samples in a timely manner, weak resistance to wind and waves, difficult maintenance, and lack of dynamic deployment capabilities.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an online water pollution monitoring device, comprising a floating island and a monitoring mechanism, wherein a sample retention mechanism is provided within the floating island; The floating island includes a buoy, a balance cover, and an upper support. The buoy is equipped with an air chamber, an equipment compartment, and a sample retention chamber. The monitoring mechanism includes a detector and a monitoring probe. The detector is installed in the equipment compartment, and the monitoring probe is fixedly installed at the bottom of the buoy. The sample retention mechanism includes a turntable, a test tube rack, a negative pressure test tube, a puncture needle, a sampling table, a suction hose, and a telescopic cylinder. The sample retention mechanism is installed in the sample retention chamber.

[0006] In a preferred embodiment of the online water pollution monitoring device of the present invention, the telescopic cylinder is fixedly installed on the side end face of the sample retention chamber, the sampling platform is fixedly installed on the telescopic shaft of the telescopic cylinder, the puncture needle is fixedly installed on the lower end face of the sampling platform and cooperates with the negative pressure test tube, and the top of the puncture needle is connected to the suction tubing.

[0007] In a preferred embodiment of the online water pollution monitoring device of the present invention, the sample retention chamber is provided with a fixedly connected bracket, the turntable is mounted on the bracket and rotatably connected thereto, a connecting rod is provided on the side end face of the sampling table, a rack is provided at the bottom of the connecting rod, a worm gear is provided at the bottom of the turntable, a drive shaft is provided on the bracket and rotatably connected thereto, a worm is provided near the end of the drive shaft close to the worm gear and a gear is provided near the end of the drive shaft close to the rack and rotatably connected thereto.

[0008] As a preferred embodiment of the online water pollution monitoring device of the present invention, a ratchet is provided on the upper edge of the turntable, a pawl that cooperates with the ratchet is provided on the side end of the sample retention chamber, a rotating shaft that is rotatably connected to the buoy is provided at the upper and lower ends of the pawl, a torsion spring is sleeved on the rotating shaft, the pawl and the buoy are elastically rotatably connected through the rotating shaft and the torsion spring, and a one-way bearing is provided between the turntable and the worm gear.

[0009] As a preferred embodiment of the online water pollution monitoring device of the present invention, the bottom of the sample retention chamber is provided with a guide hole that slides with the suction hose, the bottom of the suction hose is provided with a suction nozzle, the bottom of the floating island is provided with a hanger, the monitoring probe is fixedly installed on the hanger, and the center of the hanger is provided with a sliding hole that mates with the suction nozzle.

[0010] As a preferred embodiment of the online water pollution monitoring device of the present invention, the upper end face of the turntable is provided with a test tube rack, the test tubes are installed on the test tube rack, the upper end face of the turntable is provided with a first positioning groove that cooperates with the test tube rack and a second positioning groove that cooperates with the negative pressure test tube, the test tube rack is provided with a positioning hole that cooperates with the negative pressure test tube, and a pull rod is provided at the center of the test tube rack.

[0011] As a preferred embodiment of the online water pollution monitoring device of the present invention, the negative pressure test tube has a cylindrical structure, a rubber diaphragm is provided at the top of the negative pressure test tube, the volume of the negative pressure test tube is 10 mL, and the negative pressure inside the negative pressure test tube is -10 inHg.

[0012] As a preferred embodiment of the online water pollution monitoring device of the present invention, a light shield is provided at the upper end of the sample retention chamber, a controller is provided inside the sample retention chamber, and a laser marking machine is provided on the lower end surface of the sampling platform.

[0013] As a preferred embodiment of the online water pollution monitoring device of the present invention, a filter screen is provided at the bottom of the floating island, the monitoring probe is installed inside the filter screen, and the balancing cover is fitted over the outer end of the filter screen.

[0014] As a preferred embodiment of the online water pollution monitoring device of the present invention, a photovoltaic power generation panel is provided on the upper support, and an energy storage battery that cooperates with the photovoltaic power generation panel is provided inside the equipment compartment.

[0015] As a preferred embodiment of the online water pollution monitoring device of the present invention, the bottom of the balance shroud is provided with a water inlet, the water inlet has a honeycomb structure, the side end face of the balance shroud is uniformly provided with water outlets, the inner side of the water outlet is provided with a propeller, and the bottom of the balance shroud is provided with a gyroscope.

[0016] As a preferred embodiment of the online water pollution monitoring device of the present invention, the balance shroud has an octagonal frustum structure, the number of propellers is eight, the eight propellers are respectively installed on the eight sides of the balance shroud, and a grid is provided inside the water outlet.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention effectively solves the problems of inconvenient sample collection, susceptibility to environmental interference, and inability to achieve continuous automatic retesting in traditional water quality monitoring by integrating a floating island structure with an automatic sampling mechanism. The buoy is divided into an air chamber, an equipment compartment, and a sampling chamber, achieving functional zoning and ensuring that monitoring and sampling do not interfere with each other. The sampling mechanism uses a telescopic cylinder to drive a puncture needle to insert into a negative pressure test tube, automatically extracting water samples near the probe under negative pressure, avoiding manual intervention and improving the timeliness and representativeness of sampling. In addition, the suction hose has a liftable suction nozzle at the end, which, together with the guide hole and the hanging bracket sliding hole structure, allows the suction nozzle to enter the water only during sampling and to leave the water surface in time after sampling, effectively preventing biological attachment or blockage by impurities, thereby ensuring sampling accuracy and equipment cleanliness during long-term operation.

[0018] 2. This invention utilizes a gyroscope and propeller thruster housed within the balance shield. This device can maintain the balance of the floating island under adverse weather conditions. When strong winds cause the floating island to tilt, the gyroscope monitors the tilt angle and triggers the corresponding propeller thruster to activate, generating counter-thrust to correct the attitude. This structure produces an active balance control effect, solving the problem of the floating island easily swaying and tilting in wind and waves. It also prevents the equipment from flipping or the monitoring probe from leaving the water surface, ensuring the continuity of the monitoring process and the accuracy of the data. At the same time, it reduces maintenance requirements and extends the service life of the equipment in complex aquatic environments.

[0019] 3. This invention, through its ingenious mechanical transmission and positioning structure, achieves automatic replacement and precise alignment of negative pressure test tubes, significantly improving sample retention efficiency and system automation. When the telescopic cylinder drives the sampling platform downwards, the rack and gear on the connecting rod mesh, driving the transmission shaft to rotate. This, in turn, drives the turntable to rotate via the worm gear pair, accurately moving the next empty negative pressure test tube under the puncture needle. The design of the one-way bearing and the pawl-ratchet effectively prevents the turntable from rotating when not in operation, ensuring consistent puncture position height each time and avoiding sample leakage or equipment damage due to misalignment. Simultaneously, the test tube rack adopts a detachable structure with pull rods and multiple positioning slots, facilitating the overall replacement of sample retention test tubes and significantly reducing maintenance difficulty. A light shield is installed on the top of the sample retention chamber to prevent direct sunlight from causing algae growth and ensuring the original state of the samples. Combined with the built-in controller and laser marking machine, it can not only automatically trigger sample retention based on abnormal monitoring data but also mark the samples, providing a reliable basis for subsequent traceability analysis. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention from a first-view perspective; Figure 2 This is a schematic diagram of the overall structure of the present invention from a second perspective; Figure 3 This is a top view of the present invention; Figure 4 For the present invention Figure 3 Sectional view of AA in the middle; Figure 5 This is a schematic diagram of the sample retention mechanism of the present invention; Figure 6 This is an exploded view of the turntable, test tube rack, and negative pressure test tube of the present invention; Figure 7 For the present invention Figure 4 Enlarged view at point B in the middle; Figure 8 For the present invention Figure 4 Enlarged view of point A in the middle; Figure 9 This is a front sectional view of the negative pressure test tube of the present invention; Figure 10 This is a schematic diagram of the balance cover structure of the present invention.

[0021] In the diagram: 1. Floating island; 101. Buoy; 102. Balance shield; 103. Upper support; 104. Air chamber; 105. Equipment compartment; 106. Filter screen; 107. Sample retention chamber; 108. Sunshade; 109. Controller; 110. Guide hole; 111. Hanger; 112. Sliding hole; 113. Pawl; 114. Rotating shaft; 115. Torsion spring; 116. Inlet; 117. Outlet; 118. Propeller; 119. Grille; 120. Gyroscope; 2. Monitoring mechanism; 201. Photovoltaic panel; 202. Wireless module; 203. Energy storage battery; 204. Detector; 205. Monitoring probe; 3. Sample retention mechanism; 301. Turntable; 302. Bracket; 303. Sampling table; 304. Puncture needle; 306. Telescopic cylinder; 307. Suction hose; 308. Suction nozzle; 309. Laser marking machine; 310. Connecting rod; 311. Rack; 312. Gear; 313. Drive shaft; 314. Worm; 315. Worm wheel; 316. One-way bearing; 317. Test tube rack; 318. Negative pressure test tube; 319. First positioning groove; 320. Second positioning groove; 321. Ratchet; 322. Positioning hole; 323. Pull rod; 324. Rubber diaphragm. Detailed Implementation

[0022] Example 1 Please see Figures 1-10 An online water pollution monitoring device includes a floating island 1 and a monitoring mechanism 2, wherein a sample retention mechanism 3 is installed inside the floating island 1; The floating island 1 includes a buoy 101, a balance cover 102, and an upper support 103. The buoy 101 is equipped with an air chamber 104, an equipment compartment 105, and a sample retention chamber 107. The monitoring mechanism 2 includes a detector 204 and a monitoring probe 205. The detector 204 is installed in the equipment compartment 105, and the monitoring probe 205 is fixedly installed at the bottom of the buoy 101. The sample retention mechanism 3 includes a turntable 301, a test tube rack 317, a negative pressure test tube 318, a puncture needle 304, a sampling table 303, a suction hose 307, and a telescopic cylinder 306. The sample retention mechanism 3 is installed in the sample retention chamber 107.

[0023] Furthermore, the telescopic cylinder 306 is fixedly installed on the side end face of the sample retention chamber 107, the sampling table 303 is fixedly installed on the telescopic shaft of the telescopic cylinder 306, the puncture needle 304 is fixedly installed on the lower end face of the sampling table 303 and cooperates with the negative pressure test tube 318, and the top of the puncture needle 304 is connected to the suction tubing 307.

[0024] The telescopic cylinder 306 drives the sampling platform 303 to slide up and down, which in turn drives the puncture needle 304 to pierce into the negative pressure test tube 318. This allows the suction hose 307 to draw water samples near the monitoring probe 205 into the negative pressure test tube 318 for retention, so that they can be retested later.

[0025] Furthermore, a fixedly connected bracket 302 is provided in the sample retention chamber 107, and a turntable 301 is mounted on the bracket 302 and rotatably connected thereto. A connecting rod 310 is provided on the side end face of the sampling table 303, and a rack 311 is provided at the bottom of the connecting rod 310. A worm gear 315 is provided at the bottom of the turntable 301. A rotatably connected transmission shaft 313 is provided on the bracket 302. A worm 314 that cooperates with the worm gear 315 is provided at the end of the transmission shaft 313 near the worm gear 315, and a gear 312 that cooperates with the rack 311 is provided at the end of the transmission shaft 313 near the rack 311.

[0026] When the telescopic cylinder 306 drives the sampling platform 303 to slide downward, the connecting rod 310 drives the rack 311 to move downward. Through the cooperation of the rack 311 and the gear 312, the transmission shaft 313 is rotated. This causes the worm gear 314 and the worm wheel 315 on the transmission shaft 313 to rotate the turntable 301 by a certain angle. The turntable 301 drives the negative pressure test tube 318 to rotate, so that the next empty negative pressure test tube 318 rotates to the lower end of the puncture needle 304. At this time, the gear 312 and the rack 311 separate, the sampling platform 303 continues to press down, and the puncture needle 304 is inserted into the negative pressure test tube 318 for aspiration and sample retention, realizing the automatic replacement of the negative pressure test tube 318.

[0027] Furthermore, a ratchet 321 is provided on the upper edge of the turntable 301, and a pawl 113 that cooperates with the ratchet 321 is provided on the side end of the sample retention chamber 107. The upper and lower ends of the pawl 113 are provided with a rotating shaft 114 that is rotatably connected to the buoy 101. A torsion spring 115 is sleeved on the rotating shaft 114. The pawl 113 and the buoy 101 are elastically rotatably connected through the rotating shaft 114 and the torsion spring 115. A one-way bearing 316 is provided between the turntable 301 and the worm gear 315.

[0028] The one-way bearing 316 design allows the worm gear 315 and worm 314 to drive the turntable 301 when the rack 311 slides down. When the rack 311 slides up, the worm gear 315 rotates freely, thus preventing the turntable 301 from rotating back. Furthermore, the pawl 113, under the action of the torsion spring 115, locks the side end face of the ratchet 321, which can effectively prevent the turntable 301 from rotating back and improve the positioning accuracy of the puncture needle 304 and the negative pressure test tube 318.

[0029] Furthermore, the bottom of the sample retention chamber 107 is provided with a guide hole 110 that slides with the suction hose 307, the bottom of the suction hose 307 is provided with a suction nozzle 308, the bottom of the floating island 1 is provided with a hanger 111, the monitoring probe 205 is fixedly installed on the hanger 111, and the center of the hanger 111 is provided with a sliding hole 112 that mates with the suction nozzle 308.

[0030] The suction nozzle 308 is suspended in the sliding hole 112 through the guide hole 110. It sinks to the water during sampling and slides upward after sampling, thus avoiding long-term immersion of the suction nozzle 308 with attached moss or other organisms that may affect the accuracy of monitoring. The cylindrical porous suction nozzle 308 serves the purpose of counterweight and filtering large impurities.

[0031] Furthermore, a test tube rack 317 is provided on the upper end face of the turntable 301, and test tubes are installed on the test tube rack 317. The upper end face of the turntable 301 is provided with a first positioning groove 319 that cooperates with the test tube rack 317 and a second positioning groove 320 that cooperates with the negative pressure test tube 318. The test tube rack 317 is provided with a positioning hole 322 that cooperates with the negative pressure test tube 318. A pull rod 323 is provided at the center of the test tube rack 317.

[0032] The detachable test tube rack 317 structure facilitates the replacement and disassembly of all sample test tubes. In conjunction with the pull rod 323 structure, it is easy to quickly remove the test tube rack 317. The negative pressure test tube 318 is precisely positioned by the first positioning groove 319 and the second positioning groove 320, so that the puncture needle 304 can be accurately inserted into the negative pressure test tube 318.

[0033] Furthermore, the negative pressure test tube 318 has a cylindrical structure, and a rubber diaphragm 324 is provided at the top of the negative pressure test tube 318. The volume of the negative pressure test tube 318 is 10 mL, and the negative pressure inside the negative pressure test tube 318 is -10 inHg.

[0034] The 10ml negative pressure test tube 318, with a negative pressure of -10inHg, is sufficient to draw the water sample into the negative pressure test tube 318. The rubber diaphragm 324 allows the puncture needle 304 to pierce the diaphragm and enter the negative pressure test tube 318. After the puncture needle 304 is pulled out, the internal sample will not suffer excessive evaporation loss.

[0035] Furthermore, a light shield 108 is provided at the upper end of the sample retention chamber 107, a controller 109 is provided inside the sample retention chamber 107, and a laser marking machine 309 is provided on the lower end of the sampling table 303.

[0036] The sample retention chamber 107 is shielded by a light shield 108 to prevent excessive algae growth in the sample due to exposure to sunlight. The controller 109 summarizes and processes the data from the detector 204 inside the device and transmits the data back through the wireless module 202 on the top. At the same time, the telescopic cylinder 306 is activated periodically to retain samples. Samples will also be retained when the data is abnormal.

[0037] Furthermore, a filter screen 106 is provided at the bottom of the floating island 1, a monitoring probe 205 is installed inside the filter screen 106, and a balance cover 102 is fitted over the outer end of the filter screen 106.

[0038] The balance cover 102 is used to counterweight the floating island 1, reducing its probability of tipping over. At the same time, it protects the filter screen 106 from collisions with rocks, preventing deformation and damage. The filter screen 106 intercepts large pieces of debris, preventing debris or aquatic plants from wrapping around the monitoring probe 205 and affecting the monitoring results.

[0039] Furthermore, a photovoltaic power generation panel 201 is installed on the upper support 103, and an energy storage battery 203 that cooperates with the photovoltaic power generation panel 201 is installed in the equipment compartment 105.

[0040] The photovoltaic panel 201 absorbs solar energy and converts it into electrical energy. After rectification, the electrical energy is stored in the energy storage battery 203 to power the detector 204, controller 109 and telescopic cylinder 306. It requires external power supply and is suitable for long-term field monitoring.

[0041] Furthermore, the bottom of the balance shield 102 is provided with a water inlet 116, which has a honeycomb structure. The side end face of the balance shield 102 is evenly provided with water outlets 117. The inner side of the water outlets 117 is provided with a propeller thruster 118. The bottom of the balance shield 102 is provided with a gyroscope 120.

[0042] When encountering strong winds, floating island 1 tilts and sways. The tilt angle of floating island 1 is monitored by gyroscope 120. When the tilt angle exceeds the set threshold, the corresponding propeller thruster 118 is activated to push back, thereby keeping floating island 1 balanced and preventing it from tilting and overturning. This improves the stability of floating island 1. Furthermore, the position of floating island 1 can be adjusted by pushing it with the propeller thruster, allowing floating island 1 to move in the water and freely adjust the monitoring position.

[0043] Furthermore, the balance shield 102 has an octagonal frustum structure, and there are eight propeller thrusters 118. The eight propeller thrusters 118 are respectively installed on the eight sides of the balance shield 102, and a grid 119 is provided inside the water outlet 117.

[0044] The eight propeller thrusters 118 can be combined to generate multi-directional thrust, so that when the floating island 1 tilts, the corresponding propeller thrusters 118 can be precisely activated. By adjusting the power of the propeller thrusters 118, the floating island 1 can be kept in balance. The honeycomb inlet 116 structure prevents impurities from entering the balance cover 102, and the grid 119 structure prevents foreign objects from getting entangled in the propeller thrusters 118.

[0045] When using this equipment, first transport it to the designated location in the monitored water area, remove the fixing parts outside the bottom balance cover 102 of the floating island 1, and after ensuring that the filter screen 106 is not deformed or damaged, place the floating island 1 stably into the water. The counterweight of the balance cover 102 will keep the floating island 1 vertical and prevent it from tipping over. At the same time, the filter screen 106 will intercept large pieces of debris and aquatic plants in the water, preventing them from clogging the monitoring probe 205 and affecting the monitoring accuracy. Adjust the orientation of the photovoltaic power generation panel 201 on the upper bracket 103 to ensure it receives sufficient sunlight. The photovoltaic power generation panel 201 converts solar energy into electrical energy, which is then rectified and stored in the energy storage battery 203 in the equipment compartment 105. This provides continuous power to components such as the detector 204, controller 109, and telescopic cylinder 306, making it suitable for long-term field use. To meet the monitoring requirements, sample preparation is then carried out. The detachable test tube rack 317 is removed using the pull rod 323 at the center of the rack. Negative pressure test tubes 318, each equipped with a rubber diaphragm 324, are placed one by one into the positioning holes 322 of the rack 317. The first positioning groove 319 and the second positioning groove 320 on the upper surface of the turntable 301 are used to precisely position the rack 317 and the negative pressure test tubes 318, ensuring accurate insertion of the puncture needle 304. The test tube rack 317 containing the negative pressure test tubes 318 is then installed on the turntable 301. The door of the sample retention chamber 107 is closed, and the light shield 108 at the top of the chamber begins to provide shade, preventing excessive algae growth in the samples due to direct sunlight. After the equipment is started, the controller 109 initializes and connects with the detector. 204 Establishes a connection, and the monitoring probe 205 collects water quality data in real time. After preliminary processing, the detector 204 transmits the data to the controller 109. The controller 109 remotely transmits the aggregated monitoring data back via the wireless module 202 on top, while continuously monitoring for any abnormalities. When the preset periodic sampling time is reached or abnormalities are detected in the monitoring data, the controller 109 automatically activates the telescopic cylinder 306, and the sampling process begins: the telescopic cylinder 306 drives the sampling platform 303 to slide downwards, and the connecting rod 310 on the side end of the sampling platform 303 simultaneously drives the rack 311 to move downwards. The rack 311 meshes with the gear 312 on the transmission shaft 313, causing the transmission shaft 313 to rotate. This rotation is then transmitted through the worm gear 314 at the other end of the transmission shaft 313 to the rotating shaft. The worm gear 315 at the bottom of the platform 301 engages to rotate the turntable 301 by a certain angle. At this time, the one-way bearing 316 ensures that the worm gear 315 can only drive the turntable 301 to rotate in the forward direction. Meanwhile, the pawl 113, under the action of the torsion spring 115, locks the ratchet 321 at the edge of the turntable 301 to prevent the turntable 301 from rotating back, ensuring that the next empty negative pressure test tube 318 is accurately rotated to directly below the puncture needle 304. Subsequently, the gear 312 separates from the rack 311, the sampling platform 303 continues to press down, and the lower end of the puncture needle 304 pierces the rubber diaphragm 324 at the top of the negative pressure test tube 318. At the same time, under the guidance of the guide hole 110, the cylindrical multi-hole suction nozzle 308 at the bottom of the suction hose 307 sinks into the water through the sliding hole 112 in the center of the hanger 111.The suction nozzle 308 serves both as a counterweight and to filter large impurities. Under the negative pressure of the negative pressure test tube 318, the water sample near the monitoring probe 205 is drawn into the negative pressure test tube 318 through the suction hose 307, completing the water sample retention. During the sampling process, the laser marking machine 309 on the lower end face of the sampling platform 303 simultaneously marks the retention date on the negative pressure test tube 318 for easy traceability later. After the sample retention is completed, the telescopic cylinder 306 drives the sampling platform 303 to return to its original position. When the rack 311 moves upward, the worm gear 315 rotates freely, and the turntable 301 remains stationary, waiting for the next retention instruction. When a re-inspection is required later, the staff can quickly remove the test tube rack 317 using the pull rod 323 to achieve the collective replacement and disassembly of all retained test tubes without the need to operate individual negative pressure test tubes 318 separately. The rubber diaphragm 324 effectively reduces the evaporation loss of the sample after the puncture needle 304 is removed.

[0046] During equipment operation, the detector 204 collects water quality data in real time through the monitoring probe 205. The filter screen 106 and the honeycomb inlet 116 of the balance cover 102 filter large particulate impurities in the water. The water flows through the inlet 116 into the balance cover 102 and is discharged from the side outlet 117, ensuring that the water around the monitoring probe 205 is refreshed to ensure data accuracy. The photovoltaic power generation panel 201 continuously supplies power to the equipment. The gyroscope 120 monitors the tilt angle of the floating island 1 in real time. When the tilt angle exceeds the set threshold, the controller 109 automatically starts the corresponding propeller thruster 118 to reverse the thrust and adjust the attitude of the floating island 1. At the same time, the propeller thruster 118 combination can be started according to the preset point or remote command to push the floating island 1 to move and adjust the monitoring position.

[0047] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An online water pollution monitoring device, comprising a floating island (1) and a monitoring mechanism (2), characterized in that: The floating island (1) is equipped with a sample retention mechanism (3); The floating island (1) includes a buoy (101), a balance cover (102) and an upper support (103). The buoy (101) is provided with an air chamber (104), an equipment compartment (105) and a sample retention chamber (107). The monitoring mechanism (2) includes a detector (204) and a monitoring probe (205). The detector (204) is installed in the equipment compartment (105), and the monitoring probe (205) is fixedly installed at the bottom of the buoy (101). The sample retention mechanism (3) includes a turntable (301), a sampling table (303), a test tube rack (317), a negative pressure test tube (318), a puncture needle (304), a suction hose (307) and a telescopic cylinder (306). The sample retention mechanism (3) is installed in the sample retention chamber (107).

2. The online water pollution monitoring device as described in claim 1, characterized in that: The telescopic cylinder (306) is fixedly installed on the side end face of the sample retention chamber (107), the sampling table (303) is fixedly installed on the telescopic shaft of the telescopic cylinder (306), the puncture needle (304) is fixedly installed on the lower end face of the sampling table (303) and cooperates with the negative pressure test tube (318), and the top of the puncture needle (304) is connected to the suction tubing (307).

3. The online water pollution monitoring device as described in claim 1, characterized in that: The sample retention chamber (107) is provided with a fixedly connected bracket (302). The turntable (301) is mounted on the bracket (302) and rotatably connected thereto. The sampling table (303) is provided with a connecting rod (310) on its side end face. The bottom of the connecting rod (310) is provided with a rack (311). The bottom of the turntable (301) is provided with a worm gear (315). The bracket (302) is provided with a rotatably connected transmission shaft (313). The end of the transmission shaft (313) near the worm gear (315) is provided with a worm (314) that cooperates with the worm gear (315). The end of the transmission shaft (313) near the rack (311) is provided with a gear (312) that cooperates with it.

4. The online water pollution monitoring device as described in claim 1, characterized in that: The upper edge of the turntable (301) is provided with a ratchet (321), and the side end of the sample retention chamber (107) is provided with a pawl (113) that cooperates with the ratchet (321). The upper and lower ends of the pawl (113) are provided with a rotating shaft (114) that is rotatably connected to the buoy (101). A torsion spring (115) is sleeved on the rotating shaft (114). The pawl (113) and the buoy (101) are elastically rotatably connected through the rotating shaft (114) and the torsion spring (115). A one-way bearing (316) is provided between the turntable (301) and the worm gear (315).

5. The online water pollution monitoring device as described in claim 1, characterized in that: The bottom of the sample retention chamber (107) is provided with a guide hole (110) that slides with the suction hose (307). The bottom of the suction hose (307) is provided with a suction nozzle (308). The bottom of the floating island (1) is provided with a hanger (111). The monitoring probe (205) is fixedly installed on the hanger (111). The center of the hanger (111) is provided with a sliding hole (112) that mates with the suction nozzle (308).

6. The online water pollution monitoring device as described in claim 1, characterized in that: The upper surface of the turntable (301) is provided with a test tube rack (317), and the test tubes are installed on the test tube rack (317). The upper surface of the turntable (301) is provided with a first positioning groove (319) that cooperates with the test tube rack (317) and a second positioning groove (320) that cooperates with the negative pressure test tube (318). The test tube rack (317) is provided with a positioning hole (322) that cooperates with the negative pressure test tube (318). A pull rod (323) is provided at the center of the test tube rack (317).

7. The online water pollution monitoring device as described in claim 2, characterized in that: A light shield (108) is provided at the upper end of the sample retention chamber (107), a controller (109) is provided inside the sample retention chamber (107), and a laser marking machine (309) is provided on the lower end of the sampling table (303).

8. The online water pollution monitoring device as described in claim 1, characterized in that: The bottom of the floating island (1) is provided with a filter screen (106), the monitoring probe (205) is installed inside the filter screen (106), the balance cover (102) is sleeved on the outer end of the filter screen (106), the upper bracket (103) is provided with a photovoltaic power generation panel (201), and the equipment compartment (105) is provided with an energy storage battery (203) that cooperates with the photovoltaic power generation panel (201).

9. The online water pollution monitoring device as described in claim 1, characterized in that: The bottom of the balance shield (102) is provided with a water inlet (116), which has a honeycomb structure. The side end face of the balance shield (102) is uniformly provided with water outlets (117). The inner side of the water outlet (117) is provided with a propeller thruster (118). The bottom of the balance shield (102) is provided with a gyroscope (120).

10. The online water pollution monitoring device as described in claim 9, characterized in that: The balance shield (102) has an octagonal frustum structure, and there are eight propellers (118). The eight propellers (118) are respectively installed on the eight sides of the balance shield (102), and a grid (119) is provided inside the water outlet (117).

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