Device and method for intercepting river pollutants

Abstract

The device comprises two sets of vertical plates and a cross beam detachably installed at the tops of the vertical plates, a driving bin is arranged at the bottom of the cross beam, a lifting structure is arranged in the driving bin, sliding grooves are formed in the two sets of vertical plates, and trash blocking plates slide in the sliding grooves; the lifting structure is used for driving the trash holding plate to ascend and descend, and a scraping cleaning assembly is arranged on the trash holding plate. In order to enable the trash blocking plate to adapt to seasonal drastic changes of the river water level, the lifting structure comprises two supporting plates arranged on the inner top wall of the driving bin and rotating shafts rotationally arranged on the opposite faces of the two supporting plates. The invention relates to the technical field of river treatment equipment, and particularly provides a river pollutant intercepting device and method.

Description

Technical Field

[0001] This invention relates to the field of river treatment equipment technology, specifically to a device and method for intercepting pollutants in rivers. Background Technology

[0002] Solid floating pollutants and suspended particulate matter can pollute water bodies in rivers. Common solid floating pollutants include plastic waste, dead leaves and branches, foam, silt, and algae debris. Pollutant interception devices are installed in rivers to intercept and collect floating and suspended objects. They mainly include a support structure, interception components, and a collection and cleaning system.

[0003] Current methods for intercepting pollutants in rivers mainly include: fixed debris barriers, which use rigid barriers fixed to the river cross-section; floating debris barriers, which use pontoons to suspend the interception net; and boat-based cleaning devices, which are motorized to collect pollutants. However, these methods have the following drawbacks: (1) Fixed structures cannot adapt to the drastic seasonal changes in river water levels. When the water level rises, the interception device may not be able to effectively intercept pollutants, and when the water level falls, the interception device may not be able to cover the entire river section, resulting in low interception efficiency. (2) Relying on manual regular inspection and cleaning is inefficient and poses safety hazards. Staff need to go into the water to clean, which can easily lead to safety accidents. Summary of the Invention

[0004] The technical problem this invention aims to solve is that the fixed installation of the device cannot adapt to the drastic seasonal changes in river water levels, and the reliance on manual dredging and cleaning results in low efficiency and slow response.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: The present solution provides a device for intercepting pollutants in a river, comprising two sets of upright plates and a crossbeam detachably installed on the top of the upright plates. The bottom of the crossbeam is provided with a drive chamber, and a lifting structure is provided in the drive chamber. The two sets of upright plates are provided with sliding grooves, and a debris-blocking plate slides in the sliding grooves. The lifting structure is used to drive the debris-blocking plate to rise and fall, and a scraping and cleaning component is provided on the plate lifting. In order to enable the debris barrier to adapt to drastic seasonal changes in river water levels, the lifting structure includes two sets of support plates on the top wall of the drive chamber, and a rotating shaft on the opposite side of the two sets of support plates. A drive motor is provided on the side wall of one set of support plates, and the power output shaft of the drive motor is connected to the rotating shaft. Two sets of lifting ropes are wound on the rotating shaft. An L-shaped connecting plate is provided on one side of the support plate, and the bottom of the lifting rope is connected to the L-shaped connecting plate to realize the overall lifting and lowering of the debris barrier.

[0006] Preferred technical solution 1: The scraping cleaning assembly includes a U-shaped frame at both ends of the top of the debris barrier, and an L-shaped scraper that is slidably mounted on the top of the debris barrier at the upper horizontal part. A winding shaft rotates inside the U-shaped frame, and a rotary motor with a power output shaft connected to the winding shaft is provided on the U-shaped frame. A second lifting rope is wound on the winding shaft, and the other end of the second lifting rope is connected to one side of the L-shaped scraper.

[0007] Preferred technical solution 2: The debris barrier plate is provided with a perforated debris barrier net, and a groove is provided on one side of the L-shaped scraper for storing debris. A brush is provided on the side of the L-shaped scraper close to the debris barrier net, and the brush is in contact with the debris barrier net to scrape off the debris. A drainage hole is provided on the groove.

[0008] Preferred technical solution three: In order to collect and process the dirt and impurities collected by scraping, a lifting chamber is provided on one side of the dirt baffle, and a lifting shaft rotates inside the lifting chamber. The lifting shaft is equipped with spiral blades. A dirt collection box connected to the inside of the lifting chamber is provided on the top side of the lifting chamber. A lifting motor is provided on the top of the lifting chamber, and the power output shaft of the lifting motor is connected to the lifting shaft. A dirt inlet is opened on the opposite side of the lifting chamber and the L-shaped scraper. In actual use, the L-shaped scraper is dragged by the lifting rope to restrict the intercepted dirt in the groove and let the dirt flow into the lifting chamber through the dirt inlet. The spiral blades lift the dirt upward and send it into the dirt collection box.

[0009] Preferred technical solution four: The sewage collection box is connected to a sewage door on one side, and the sewage door is equipped with a transparent observation window to facilitate the observation of the internal sewage storage and timely cleaning.

[0010] Preferred technical solution five: An ultrasonic ranging sensor is installed on the top wall of the drive compartment to monitor the position of the debris barrier on the water surface. Preferred technical solution six: In order to increase the lifting stability of the debris barrier, four sets of guide wheels are provided at the four corners of the rear wall of the debris barrier. The outer side of the guide wheels is stepped and used to engage with both sides of the upright plate.

[0011] Preferred technical solution seven: The drive compartment is equipped with a controller. The drive motor, rotary motor, lifting motor and ultrasonic ranging sensor are all electrically connected to the controller. The controller has a built-in wireless transmission module that can connect to an external electronic terminal to achieve remote control. The wireless communication module is one of a Wi-Fi module, a Bluetooth module or a mobile cellular network module. The external electronic terminal is a smartphone, tablet computer or remote server. The external electronic terminal runs a matching application or accesses a cloud control interface to send control commands to the controller and receive status information from the controller.

[0012] Preferred technical solution eight: The two sets of upright plates are provided with multiple sets of threaded holes at equal intervals along the height direction on both sides, and also include a positioning plate. The positioning plate is connected to the threaded holes by bolts, and a positioning cone is provided on the positioning plate. In actual use, the upright plate is located in the river channel and close to the riverbank. The upright plate is installed and fixed by the cooperation of the positioning cone and the positioning plate.

[0013] The present invention proposes an interception method for a river pollutant interception device, comprising the following steps: Step 1: Device Installation and Fixing Two sets of vertical plates are arranged parallel to each other in the river area where pollutants need to be intercepted, and placed close to the riverbank. The positioning plate is connected to the pre-drilled threaded holes on the side of the vertical plate with bolts. The positioning cone on the positioning plate is driven into the riverbed or bank foundation by hammering or pressure, thereby firmly installing the entire device in the predetermined position. Subsequently, the crossbeam is detachably installed and fixed to the top of the two sets of vertical plates. Step 2: Initial Setup and Adaptive Water Level Control The device is started and the controller is powered on and initialized. The controller receives real-time position data of the debris barrier relative to the water surface or a preset reference surface, which is monitored by the ultrasonic ranging sensor. When the river water level changes drastically seasonally, the operator can send lifting commands through an external electronic terminal wirelessly connected to the controller, or the controller can automatically generate control commands based on the preset water level-height relationship. The controller then controls the drive motor to start, drives the rotating shaft to rotate, and drives the L-shaped connecting plate and the debris barrier connected to it to rise and fall smoothly along the sliding groove on the vertical plate by raising and lowering two sets of lifting ropes. The guide wheels at the four corners of the rear wall of the debris barrier roll along both sides of the vertical plate to ensure the stability and centering of the lifting process until the debris barrier net of the debris barrier reaches the optimal interception depth to actively adapt to water level changes. Step 3: Automatic Scraping and Waste Collection When it is necessary to clean up the pollutants accumulated on the trash rack, the cleaning program can be remotely started through an external electronic terminal, or the controller can automatically execute it according to a preset cycle. The controller first controls the rotary motor to start, drives the winding shaft to rotate, and slowly releases the second lifting rope, so that the L-shaped scraper moves horizontally along the trash rack. During this process, the brushes on the side of the L-shaped scraper are in close contact with the surface of the trash rack, scraping off the solid dirt and floating objects attached to the net surface and pushing them into the groove of the L-shaped scraper. The drainage holes in the groove can filter out some of the water. Step 4: Waste Lifting and Centralized Storage As the L-shaped scraper moves, the dirt accumulated in the groove is transported to the inlet position opposite to the lifting chamber. At the same time, the controller starts the lifting motor, which drives the lifting shaft to rotate the spiral blades. The dirt is captured by the spiral blades through the inlet and lifted upwards, and finally pushed into the collection box at the top of the lifting chamber for centralized storage. After cleaning is completed, the controller controls the rotating motor to reverse, rewinds the second lifting rope, and lifts the L-shaped scraper back to the initial position on one side of the debris barrier, preparing for the next cleaning operation.

[0014] Step 5: Waste Disposal and Remote Monitoring and Maintenance Staff regularly check the sludge level in the collection tank through the transparent observation window on the drain door. When the tank is nearly full, the drain door is opened for cleaning and disposal. Throughout the operation, the controller's wireless transmission module continuously sends device status information, including the height of the baffle plate, motor operating status, sensor data, and fault alarm information, to a remote server or the operator's external electronic terminal. Operators can monitor the device's operating status in real time through an application or cloud control interface and remotely issue control commands, achieving efficient and low-latency intelligent management.

[0015] The present invention proposes a device and method for intercepting pollutants in river channels. The beneficial effects achieved by adopting the above structure are as follows: (1) This invention, by setting up a closed-loop lifting system consisting of an ultrasonic ranging sensor, a controller, and a drive motor, can monitor the water level in real time and automatically adjust the height of the debris barrier to keep it at the optimal interception depth. This effectively adapts to the drastic seasonal changes in river water levels and solves the problem of fixed interception devices failing to intercept or being over-submerged when the water level fluctuates significantly. At the same time, the integrated automatic cleaning components for scraping, collecting, and lifting can be started remotely or at set times, replacing the traditional dangerous and inefficient manual dredging operations. This achieves rapid response and efficient removal of pollutants, significantly improving the operating efficiency and intelligent management level of the entire interception system. (2) The guide wheels and the stepped cooperation on the side of the upright plate, combined with the chute design, provide multiple guides and limits for the lifting and lowering movement of the debris barrier, effectively preventing jamming, deflection and shaking during the lifting and lowering process, and ensuring the stability and centering of the debris barrier lifting and lowering under complex water flow conditions. In addition, the adjustable installation method of positioning plate and positioning cone is adopted, which enables the device to stably adapt to different riverbank and riverbed terrain conditions. These designs together enhance the adaptability of the device in various river environments, ensure its long-term reliability and stability, and reduce maintenance requirements and failure rate; (3) By innovatively combining the scraping and collection function of the L-shaped scraper with the spiral conveying function of the lifting chamber, a complete internal pollutant treatment path is constructed, from the removal of the debris screen to temporary storage, vertical lifting, and finally concentration in the collection tank. This design makes the sewage cleaning process continuous and closed, reducing secondary interference to the river environment, and the collection tank is located at the top for easy manual cleaning. Combined with the transparent observation window on the sewage tank's discharge door and the remote status transmission function of the controller, the dual management advantages of local visualization of sewage storage and remote monitoring of operating status are realized, which facilitates the accurate arrangement of maintenance and cleaning operations by staff and achieves intensive and information-based management of intercepted pollutants. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of a device and method for intercepting pollutants in river channels proposed in this invention. Figure 1 ; Figure 2 This is a perspective structural diagram of a device and method for intercepting pollutants in river channels proposed in this invention. Figure 2 ; Figure 3 This is a schematic diagram of a lifting structure for a river pollutant interception device and method proposed in this invention; Figure 4 This is a schematic diagram of the lifting chamber and its interior of a device and method for intercepting pollutants in a river, as proposed in this invention. Figure 5 This is a schematic diagram of an L-shaped scraper for a river pollutant interception device and method proposed in this invention; Figure 6 This is a schematic diagram of a guide wheel for a river pollutant interception device and method proposed in this invention.

[0017] The components are as follows: 1. Vertical plate, 2. Horizontal beam, 3. Lifting structure, 4. Slide groove, 5. Sludge baffle, 6. Scraping cleaning assembly, 7. Support plate, 8. Rotating shaft, 9. Drive motor, 10. Lifting rope one, 11. L-shaped connecting plate, 12. U-shaped frame, 13. L-shaped scraper, 14. Rotary motor, 15. Lifting rope two, 16. Sludge baffle, 17. Groove, 18. Brush, 19. Lifting chamber, 20. Spiral blade, 21. Sludge collection box, 22. Lifting motor, 23. Sludge inlet, 24. Guide wheel, 25. Controller, 26. Positioning plate, 27. Positioning cone. Detailed Implementation

[0018] The technical inventions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0019] It should be noted that the terms “front,” “back,” “left,” “right,” “up,” and “down” used in the following description refer to the directions shown in the attached diagram, while the terms “inside” and “outside” refer to the directions toward or away from the geometric center of a specific component, respectively. Example

[0020] like Figures 1-6 As shown, the technical invention adopted by the present invention is as follows: a device for intercepting pollutants in a river, comprising two sets of upright plates 1 and a crossbeam 2 detachably installed on the top of the upright plates 1. The bottom of the crossbeam 2 is provided with a drive chamber, and a lifting structure 3 is provided in the drive chamber. The two sets of upright plates 1 are provided with a sliding groove 4, and a debris-blocking plate 5 slides in the sliding groove 4. The lifting structure 3 is used to drive the debris-blocking plate 5 to rise and fall. A scraping and cleaning component 6 is provided on the plate lifting. like Figure 3 As shown, in order to enable the debris barrier 5 to adapt to the drastic seasonal changes in river water level, the lifting structure 3 includes two sets of support plates 7 located on the top wall of the drive chamber, and a rotating shaft 8 rotatably located on the opposite side of the two sets of support plates 7. A drive motor 9 is provided on the side wall of one set of support plates 7, and the power output shaft of the drive motor 9 is connected to the rotating shaft 8. Two sets of lifting ropes 10 are wound on the rotating shaft 8. An L-shaped connecting plate 11 is provided on one side of the support plate 7, and the bottom of the lifting ropes 10 is connected to the L-shaped connecting plate 11 to realize the overall lifting and lowering of the debris barrier 5.

[0021] like Figure 5 As shown, the scraping and cleaning assembly 6 includes a U-shaped frame 12 at both ends of the top of the baffle plate 5, and an L-shaped scraper 13 with its upper horizontal portion slidably mounted on the top of the baffle plate 5. A winding shaft rotates inside the U-shaped frame 12, and a rotary motor 14 with a power output shaft connected to the winding shaft is provided on the U-shaped frame 12. A second lifting rope 15 is wound on the winding shaft, and the other end of the second lifting rope 15 is connected to one side of the L-shaped scraper 13. The baffle plate 5 is provided with a perforated baffle net 16, and a groove 17 is provided on one side of the L-shaped scraper 13 for storing dirt. A brush 18 is provided on the side of the L-shaped scraper 13 close to the baffle net 16, and a drainage hole is provided in the groove 17.

[0022] Preferred technical solution 8: Multiple sets of threaded holes are provided at equal intervals along the height direction on both sides of the two sets of upright plates 1, and a positioning plate 26 is also provided. The positioning plate 26 is connected to the threaded holes by bolts, and a positioning cone 27 is provided on the positioning plate 26. Example

[0023] Based on Example 1, such as Figure 4 As shown, a lifting chamber 19 is provided on one side of the baffle plate 5, and a lifting shaft rotates inside the lifting chamber 19. A spiral blade 20 is provided on the lifting shaft. A sludge collection box 21 connected to the inside of the lifting chamber 19 is provided on one side of the top of the lifting chamber 19. A lifting motor 22 is provided on the top of the lifting chamber 19, and the power output shaft of the lifting motor 22 is connected to the lifting shaft. A sludge inlet 23 is opened on the opposite side of the lifting chamber 19 and the L-shaped scraper 13.

[0024] The sludge collection tank 21 has a drain door on one side, and the drain door is equipped with a transparent observation window. An ultrasonic ranging sensor is installed on the top wall of the drive compartment.

[0025] The drive compartment is equipped with a controller 25. The drive motor 9, rotary motor 14, lifting motor 22 and ultrasonic ranging sensor are all electrically connected to the controller 25. The controller 25 has a built-in wireless transmission module, which can be connected to an external electronic terminal to realize remote control.

[0026] The present invention proposes an interception method for a river pollutant interception device, comprising the following steps: Step 1: Device Installation and Fixing Two sets of vertical plates 1 are arranged parallel to each other in the river area where pollutants need to be intercepted, and are placed close to the riverbank. The positioning plate 26 is connected to the pre-drilled threaded holes on the side of the vertical plate 1 by bolts. The positioning cone 27 on the positioning plate 26 is driven into the riverbed or bank foundation by hammering or pressure, thereby firmly installing the entire device in the predetermined position. Subsequently, the crossbeam 2 is detachably installed and fixed to the top of the two sets of vertical plates 1. Step 2: Initial Setup and Adaptive Water Level Control The device is started and the controller 25 is powered on and initialized. The controller 25 receives real-time position data of the debris barrier 5 relative to the water surface or a preset reference surface, which is monitored by the ultrasonic ranging sensor. When the river water level changes drastically seasonally, the operator can send lifting commands through an external electronic terminal wirelessly connected to the controller 25, or the controller 25 can automatically generate control commands according to the preset water level-height relationship. The controller 25 then controls the drive motor 9 to start, drives the rotating shaft 8 to rotate, and drives the L-shaped connecting plate 11 and the debris barrier 5 connected to it to rise and fall smoothly along the slide groove 4 on the vertical plate 1 by releasing and retracting two sets of lifting ropes 10. The guide wheels 24 at the four corners of the rear wall of the debris barrier 5 roll along both sides of the vertical plate 1 to ensure the stability and centering of the lifting process until the debris barrier net 16 of the debris barrier 5 reaches the optimal interception depth to actively adapt to water level changes. Step 3: Automatic Scraping and Waste Collection When it is necessary to clean the pollutants accumulated on the trash can 16, the cleaning program can be remotely started through an external electronic terminal, or the controller 25 can automatically execute it according to a preset cycle. The controller 25 first controls the rotary motor 14 to start, drives the winding shaft to rotate, and slowly releases the lifting rope 15, so that the L-shaped scraper 13 moves horizontally along the trash can 5. During this process, the brush 18 on the side of the L-shaped scraper 13 closely adheres to the surface of the trash can 16, scrapes off the solid dirt and floating objects attached to the net surface, and pushes them into the groove 17 of the L-shaped scraper 13. The drainage holes in the groove 17 can filter out some water. Step 4: Waste Lifting and Centralized Storage As the L-shaped scraper 13 moves, the dirt accumulated in the groove 17 is transported to the inlet 23 opposite to the lifting chamber 19. At the same time, the controller 25 starts the lifting motor 22, which drives the lifting shaft to rotate the spiral blades 20. The dirt is captured by the spiral blades 20 through the inlet 23 and lifted upwards. Finally, it is pushed into the collection box 21 at the top of the lifting chamber 19 for centralized storage. After cleaning is completed, the controller 25 controls the rotary motor 14 to reverse and rewind the lifting rope 15 to lift the L-shaped scraper 13 back to the initial position on one side of the baffle plate 5, in preparation for the next cleaning operation.

[0027] Step 5: Waste Disposal and Remote Monitoring and Maintenance Staff regularly check the storage status of waste in the waste collection tank 21 through the transparent observation window on the drain door. When the tank is nearly full, the drain door is opened for cleaning and disposal. Throughout the entire operation, the wireless transmission module of the controller 25 continuously sends device status information, including the height of the baffle plate 5, motor operating status, sensor data, and fault alarm information, to a remote server or the operator's external electronic terminal. Operators can monitor the device's operating status in real time through an application or cloud control interface and remotely issue control commands, achieving efficient and low-latency intelligent management.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, material, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, material, or apparatus.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for intercepting pollutants in river channels, characterized in that, It includes two sets of upright plates (1) and a detachable crossbeam (2) installed on the top of the upright plates (1). The bottom of the crossbeam (2) is provided with a drive chamber and a lifting structure (3) is provided in the drive chamber. The two sets of upright plates (1) are provided with a sliding groove (4) and a dirt-blocking plate (5) slides in the sliding groove (4). The lifting structure (3) is used to drive the dirt-blocking plate (5) to rise and fall. The plate lifting is provided with a scraping and cleaning component (6). In order to enable the debris barrier (5) to adapt to the drastic seasonal changes in river water level, the lifting structure (3) includes two sets of support plates (7) on the top wall of the drive chamber, and a rotating shaft (8) on the opposite side of the two sets of support plates (7). A drive motor (9) is provided on the side wall of one set of support plates (7), and the power output shaft of the drive motor (9) is connected to the rotating shaft (8). Two sets of lifting ropes (10) are wound on the rotating shaft (8). An L-shaped connecting plate (11) is provided on one side of the support plate (7), and the bottom of the lifting rope (10) is connected to the L-shaped connecting plate (11) to realize the overall lifting of the debris barrier (5).

2. The device for intercepting pollutants in a river as described in claim 1, characterized in that, The scraping and cleaning assembly (6) includes a U-shaped frame (12) at both ends of the top of the baffle plate (5) and an L-shaped scraper (13) with its upper horizontal part slidably disposed on the top of the baffle plate (5). A take-up shaft rotates inside the U-shaped frame (12), and a rotary motor (14) with a power output shaft connected to the take-up shaft is provided on the U-shaped frame (12). A second lifting rope (15) is wound on the take-up shaft, and the other end of the second lifting rope (15) is connected to one side of the L-shaped scraper (13).

3. A device for intercepting pollutants in river channels according to claim 2, characterized in that, The debris barrier (5) is provided with a perforated debris barrier net (16). A groove (17) is provided on one side of the L-shaped scraper (13) for storing debris. A brush (18) is provided on the side of the L-shaped scraper (13) close to the debris barrier net (16). The brush (18) is in contact with the debris barrier net (16) to scrape off the debris. A drainage hole is provided on the groove (17).

4. A device for intercepting pollutants in a river as described in claim 3, characterized in that, The baffle plate (5) has a lifting chamber (19) on one side, and a lifting shaft rotates inside the lifting chamber (19). The lifting shaft is equipped with a spiral blade (20). The top side of the lifting chamber (19) is equipped with a sludge collection box (21) that communicates with the inside of the lifting chamber (19). The top of the lifting chamber (19) is equipped with a lifting motor (22), and the power output shaft of the lifting motor (22) is connected to the lifting shaft. The lifting chamber (19) and the L-shaped scraper (13) have a sludge inlet (23) on their opposite sides.

5. A device for intercepting pollutants in a river channel according to claim 4, characterized in that, The sewage collection box (21) is connected to a sewage door on one side, and the sewage door is equipped with a transparent observation window.

6. A device for intercepting pollutants in a river channel according to claim 5, characterized in that, The drive compartment is equipped with an ultrasonic ranging sensor on the top wall to monitor the position of the debris barrier (5) on the water surface.

7. A device for intercepting pollutants in a river channel according to claim 6, characterized in that, The back wall of the debris barrier (5) is provided with four sets of guide wheels (24) at the four corners. The outer side of the guide wheels (24) is stepped and is used to engage with the two sides of the upright plate (1).

8. A device for intercepting pollutants in a river channel according to claim 7, characterized in that, The drive compartment is equipped with a controller (25). The drive motor (9), rotary motor (14), lifting motor (22) and ultrasonic ranging sensor are all electrically connected to the controller (25). The controller (25) has a built-in wireless transmission module.

9. A device for intercepting pollutants in a river channel according to claim 8, characterized in that, The two sets of upright plates (1) are provided with multiple sets of threaded holes at equal intervals along the height direction on both sides, and also include a positioning plate (26). The positioning plate (26) is connected to the threaded holes by bolts, and a positioning cone (27) is provided on the positioning plate (26).

10. A method for intercepting pollutants in a river channel according to any one of claims 1 to 9, characterized in that, Specifically, the following steps are included: Step 1: Device Installation and Fixing Two sets of vertical plates (1) are arranged in parallel in the river area where pollutants need to be intercepted, and are placed close to the riverbank. The positioning plate (26) is connected to the threaded holes pre-drilled on the side of the vertical plate (1) by bolts. The positioning cone (27) on the positioning plate (26) is driven into the riverbed or bank foundation by hammering or pressure, thereby firmly installing the entire device in the predetermined position. Then, the crossbeam (2) is detachably installed and fixed on the top of the two sets of vertical plates (1). Step 2: Initial Setup and Adaptive Water Level Control Start the device and power on the controller (25) for initialization. The controller (25) receives the real-time position data of the debris barrier (5) relative to the water surface or preset reference surface monitored by the ultrasonic ranging sensor. When the river water level changes drastically due to seasonal changes, the operator can send lifting commands through an external electronic terminal wirelessly connected to the controller (25), or the controller (25) can automatically generate control commands according to the preset water level-height relationship. The controller (25) then controls the drive motor (9) to start and drives the rotating shaft (8) to rotate. By releasing and retracting two sets of lifting ropes (10), the L-shaped connecting plate (11) and the debris barrier (5) connected to it are driven to rise and fall smoothly along the slide groove (4) on the vertical plate (1). The guide wheels (24) at the four corners of the rear wall of the debris barrier (5) roll along both sides of the vertical plate (1) to ensure the stability and centering of the lifting process until the debris barrier net (16) of the debris barrier (5) reaches the optimal interception depth to actively adapt to water level changes. Step 3: Automatic Scraping and Waste Collection When it is necessary to clean the pollutants accumulated on the screen (16), the cleaning program can be started remotely through an external electronic terminal, or automatically executed by the controller (25) according to a preset cycle. The controller (25) first controls the rotary motor (14) to start, drives the winding shaft to rotate, and slowly releases the second lifting rope (15), so that the L-shaped scraper (13) moves horizontally along the screen (5). During this process, the brush (18) on the side of the L-shaped scraper (13) closely adheres to the surface of the screen (16), scrapes off the solid dirt and floating objects attached to the screen surface, and pushes them into the groove (17) of the L-shaped scraper (13). The drainage holes of the groove (17) can filter out some water. Step 4: Waste Lifting and Centralized Storage As the L-shaped scraper (13) scrapes and moves, the dirt accumulated in the groove (17) is transported to the inlet (23) opposite to the lifting chamber (19). At the same time, the controller (25) starts the lifting motor (22), drives the lifting shaft to rotate the spiral blade (20), and the dirt is captured by the spiral blade (20) through the inlet (23) and lifted and transported upward. Finally, it is pushed into the collection box (21) at the top of the lifting chamber (19) for centralized storage. After cleaning is completed, the controller (25) controls the rotary motor (14) to reverse and rewind the second lifting rope (15) to lift the L-shaped scraper (13) back to the initial position on the side of the baffle plate (5) to prepare for the next cleaning operation. Step 5: Waste Disposal and Remote Monitoring and Maintenance Staff regularly check the storage status of sludge in the sludge collection box (21) through the transparent observation window set on the drain door. When the sludge is about to be full, the drain door is opened for cleaning and disposal.

Images