Filtering device for monitoring water quality of environment

Abstract

The utility model relates to environmental monitoring technical field especially relates to a kind of filtering devices for environmental water quality monitoring.Its technical scheme includes installation main body, pontoon, equipment mounting seat and filtering mechanism.Wire roller is rotationally arranged in installation main body, wire roller outer wall is equipped with gear ring, pontoon top motor is driven gear ring by gear to drive wire roller rotation, realizes wire harness take-up and fixed anchor settlement and recovery, completes device positioning and transposition.Wire roller is connected by crosspiece connection rotating main shaft, main shaft drives fixed plate rotation, and fixed plate is equipped with side cleaning plate, top cleaning plate and filter membrane;Side cleaning plate is cleaned by circumferential scraping under the action of spring and adheres to filter barrel inner wall, filter membrane carries out secondary precision filtration to water body, and top cleaning plate is cleaned to monitoring equipment input end.The utility model can realize bidirectional automatic cleaning before and after device movement, avoid sample mixing, and simultaneously have impact protection function, and it is suitable for long-term unattended field water quality monitoring.

Description

Technical Field

[0001] This utility model relates to the field of environmental monitoring technology, and in particular to a filtration device for environmental water quality monitoring. Background Technology

[0002] In water quality monitoring, water sample pretreatment is a crucial preliminary step to ensure the authenticity and reliability of test data. Its main task is to effectively remove physical interfering substances such as silt, suspended solids, algae, and colloidal particles from the water body without altering the chemical properties of the water sample. This prevents these impurities from clogging the sampling pipeline of the monitoring equipment and affecting the accuracy of the analytical results. In recent years, buoy-based online monitoring systems, which integrate floats, filtration devices, and monitoring equipment, have gradually become an important means of environmental water quality monitoring due to their ability to be deployed unattended in target water areas for extended periods, enabling in-situ, real-time, and continuous water quality data acquisition.

[0003] Existing filtration devices for water quality monitoring buoy systems typically employ a physical interception method, placing a filter screen or filter barrel at the inlet of the monitoring equipment, and using fixed anchors and cables to moor the buoy at a predetermined monitoring point. The basic working principle is as follows: water flows through the filter screen under natural flow or pressure difference; suspended solids larger than the mesh size are trapped on the outside of the screen, while clearer water enters the monitoring equipment for analysis and detection of various water quality parameters. To cope with different water depths and water quality environments, some devices are designed with a winch mechanism, using a motor to drive a roller to release or retract the cable, thereby adjusting the buoy's position or deploying and retrieving the fixed anchor. During long-term operation, to ensure the filtration efficiency of the filter screen, some improved designs add a cleaning brush or scraper driven by an independent motor to periodically clean the filter screen surface mechanically, thus slowing down the clogging process.

[0004] However, in existing filtration devices, after completing the testing at one monitoring point, the anchor needs to be retrieved and the device moved to a new monitoring point for continued sampling and analysis. During this process, impurities adhering to the inner wall of the filter barrel, the surface of the filter screen, and the sampling inlet of the monitoring equipment often cannot be effectively removed. Residue from the previous monitoring point mixes with the initial water sample at the new point, directly causing cross-contamination between water samples from different points, a phenomenon known in the industry as sample cross-contamination. This problem severely interferes with the authenticity and comparability of monitoring data, significantly reducing the reliability of data from multi-point monitoring. Furthermore, most existing filter barrels are directly exposed to the external water environment and lack effective impact-resistant protection structures. When faced with sudden external forces such as impacts from floating objects in the water flow or collisions with aquatic plants and animals, the filter barrel and internal filter membrane are prone to physical damage, leading to device failure and making it difficult to meet the stable operation requirements under long-term harsh conditions. Therefore, this application proposes a filtration device for environmental water quality monitoring. Utility Model Content

[0005] The purpose of this invention is to address the problem in the prior art that impurities adhering to the inner wall of the filter barrel, the surface of the filter screen, and the inlet of the monitoring equipment often cannot be effectively removed, and to propose a filtration device for environmental water quality monitoring.

[0006] The technical solution of this utility model is as follows: A filtration device for environmental water quality monitoring includes an installation body, a float mounted on the outer wall of the installation body, and an equipment mounting base mounted on the bottom of the installation body. A wire roller is rotatably arranged inside the installation body, and a toothed ring is installed on the outer wall of the wire roller. A motor is installed on the top of the float, and a gear that meshes with the toothed ring is installed at the output end of the motor. The filtration device also includes a filtration mechanism disposed at the bottom of the equipment mounting base. The filtration mechanism includes a filter barrel installed at the bottom of the equipment mounting base. A rotating main shaft is connected to the middle of the filter barrel, and a fixed plate is installed on the outer wall of the rotating main shaft. A top cleaning plate is installed on the top of the fixed plate, and a filter membrane is installed in the middle. A side cleaning plate is slidably arranged on the inner and outer sides of the fixed plate, and a telescopic shaft and a spring are arranged between the side cleaning plate and the fixed plate. The rotating main shaft passes through the equipment mounting base and is located inside the mounting body. The rotating main shaft is connected to the roller through a cross.

[0007] Optionally, the roller has a wire harness inside, and the ends of the wire harness are fitted with fixed anchors.

[0008] Optionally, one end of the spring is installed inside the side cleaning plate, and the other end abuts against the inside of the fixed plate, and the spring is sleeved on the outer wall of the telescopic shaft.

[0009] Optionally, a monitoring device is installed inside the device mounting base, a bracket is installed on the top of the mounting body, and multiple solar panels are installed on the outer wall of the bracket.

[0010] Optionally, the upper surface of the top cleaning plate is attached to the input end of the monitoring device, and the side cleaning plate is slidably disposed on the inner wall of the filter barrel.

[0011] Optionally, the filtration device may also include a protective mechanism disposed on the outside of the filter barrel; The protective mechanism includes multiple mounting plates installed inside and outside the filter barrel, and each of the multiple mounting plates has a sliding plate slidably disposed inside it. A protective plate is installed at the end of each sliding plate, and an elastic deflector rope is disposed between the multiple protective plates.

[0012] Optionally, a second spring is provided inside the mounting plate, with one end of the second spring installed inside the mounting plate and the other end abutting against the sliding plate.

[0013] Optionally, multiple protective plates and elastic barrier ropes are disposed on the outside of the filter barrel, and a through hole is provided in the middle of the protective plate.

[0014] Compared with the prior art, this application includes at least one of the following beneficial technical effects: This invention achieves coaxial linkage between a motor-driven roller deployment and retraction mechanism and a cleaning component inside the filter barrel via a cross-shaped structure. During the deployment or retrieval of the fixed anchor, the roller rotation drives the rotating main shaft and the fixed plate to rotate synchronously, enabling the side cleaning plate and the top cleaning plate to automatically clean the inner wall of the filter barrel and the input end of the monitoring equipment, respectively. This cleaning action is performed once before and after each movement of the device, realizing reciprocating cleaning in both directions. It can effectively remove impurities remaining on the inner wall of the filter barrel and at the sample inlet of the monitoring equipment, fundamentally avoiding cross-contamination of water samples between different monitoring points. This ensures the authenticity and reliability of water quality data in multi-point switching monitoring scenarios, and eliminates the need for an additional independent cleaning drive source. It also features a compact structure and low energy consumption.

[0015] Furthermore, a protective mechanism consisting of an installation plate, a sliding plate, a second spring, a protective plate, and an elastic baffle rope is installed on the outside of the filter barrel. When floating objects or aquatic organisms collide with the protective plate, the protective plate compresses the second spring through the sliding plate, using the elastic deformation of the spring to absorb and buffer the impact energy. At the same time, the elastic baffle rope disperses the impact force on a single protective plate to adjacent protective plates, achieving load sharing and effectively preventing the filter barrel from directly bearing the impact, which could lead to cylinder rupture or filter membrane damage. The through-hole in the middle of the protective plate blocks large particles from directly impacting the filter screen while ensuring that fine water particles can pass smoothly and enter the filter barrel for filtration. This balances protective performance and filtration efficiency, significantly improving the stability and service life of the device under harsh hydrological conditions in the field. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a filtration device for environmental water quality monitoring. Figure 2 This is a schematic diagram of the internal structure of the main body of a filtration device for environmental water quality monitoring. Figure 3 This is a schematic diagram of the internal structure of the filter barrel of a filtration device for environmental water quality monitoring. Figure 4 A schematic diagram of the filter membrane structure of a filtration device for environmental water quality monitoring; Figure 5 for Figure 4 Schematic diagram of the structure at point A in the middle; Figure 6 This is a schematic diagram of the protective plate structure of a filtration device for environmental water quality monitoring.

[0017] Reference numerals: 1. Main installation body; 2. Float; 3. Bracket; 4. Solar panel; 5. Equipment mounting base; 6. Filter barrel; 7. Motor; 8. Gear; 9. Wire roller; 10. Gear ring; 11. Fixed anchor; 12. Wire harness; 13. Cross; 14. Rotating spindle; 15. Monitoring equipment; 16. Fixing plate; 17. Filter membrane; 18. Side cleaning plate; 19. Telescopic shaft; 20. Spring 1; 21. Top cleaning plate; 22. Mounting plate; 23. Sliding plate; 24. Spring 2; 25. Through hole; 26. Elastic rope; 27. Protective plate. Detailed Implementation

[0018] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features can be combined with each other.

[0019] Example 1, as Figure 1 - Figure 5 As shown, the present invention proposes a filtration device for environmental water quality monitoring, including a mounting body 1, a float 2, an equipment mounting base 5, and a filtration mechanism disposed at the bottom of the equipment mounting base 5; the float 2 is mounted on the outer wall of the mounting body 1, the equipment mounting base 5 is mounted on the bottom of the mounting body 1, a wire roller 9 is rotatably disposed inside the mounting body 1, and a toothed ring 10 is mounted on the outer wall of the wire roller 9; a motor 7 is mounted on the top of the float 2, and a gear 8 that meshes with the toothed ring 10 is mounted on the output end of the motor 7; The filtration mechanism includes a filter barrel 6 installed at the bottom of the equipment mounting base 5. A rotating main shaft 14 is connected to the middle of the filter barrel 6, and a fixing plate 16 is installed on the outer wall of the rotating main shaft 14. A top cleaning plate 21 is installed on the top of the fixing plate 16, and a filter membrane 17 is installed in the middle. A side cleaning plate 18 is slidably arranged on the inner and outer sides of the fixing plate 16, and a telescopic shaft 19 and a spring 20 are arranged between the side cleaning plate 18 and the fixing plate 16. The rotating main shaft 14 passes through the equipment mounting base 5 and is located inside the mounting body 1. The rotating main shaft 14 is connected to the wire roller 9 through a cross 13. In this embodiment, a wire harness 12 is provided inside the wire roller 9, and a fixed anchor 11 is installed at the end of the wire harness 12; one end of the spring 20 is installed inside the side cleaning plate 18, and the other end abuts against the inside of the fixed plate 16, and the spring 20 is sleeved on the outer wall of the telescopic shaft 19; a monitoring device 15 is installed inside the equipment mounting base 5, a bracket 3 is installed on the top of the mounting body 1, and multiple solar panels 4 are installed on the outer wall of the bracket 3; the upper surface of the top cleaning plate 21 is in contact with the input end of the monitoring device 15, and the side cleaning plate 18 is slidably disposed on the inner wall of the filter barrel 6; the filtration mechanism is described in detail below: In this embodiment, the positioning operation is performed first during operation. The motor 7 installed on the top of the float 2 is started, and the output end of the motor 7 rotates, driving the gear 8 on it to rotate. The gear 8, as the driving component, meshes with the gear ring 10 installed on the outer wall of the line roller 9, thereby transmitting power to the line roller 9 and driving the line roller 9 to rotate forward inside the mounting body 1. The rotation of the line roller 9 causes the wire bundle 12 wound inside it to gradually release, and the fixed anchor 11 connected to the end of the wire bundle 12 sinks downward under the action of gravity until it is anchored to the bottom of the water body, thereby fixing the entire device at the preset monitoring point.

[0020] During the rotation of the online roller 9 to release the wire harness 12, the online roller 9 transmits torque synchronously to the rotating main shaft 14 through the cross 13 below it. The rotating main shaft 14 passes through the equipment mounting base 5 and extends into the filter barrel 6. Its rotation will drive the fixed plate 16, which is installed on the outer wall of the rotating main shaft 14, to rotate synchronously inside the filter barrel 6. A side cleaning plate 18 is provided on the fixed plate 16. Under the cooperation of the telescopic shaft 19 and the spring 20, the side cleaning plate 18 always maintains elastic contact with the inner wall of the filter barrel 6. Therefore, when the fixed plate 16 rotates, the side cleaning plate 18 will slide circumferentially along the inner wall of the filter barrel 6, continuously scraping away large particles of impurities such as mud and algae attached to the inner wall of the filter barrel 6, i.e., the outer filter screen, preventing the filter holes of the filter barrel 6 from being blocked and realizing the self-cleaning of the filter barrel 6.

[0021] Meanwhile, under the positioning of the device and the rotation of the filter barrel 6, water continuously enters the interior of the filter barrel 6 through the filter holes on its side wall. The water inside the filter barrel 6 then flows through the filter membrane 17 installed in the middle of the fixed plate 16. The pore size of the filter membrane 17 is smaller than that of the filter barrel 6, enabling secondary fine filtration of the water, effectively intercepting fine suspended solids and colloidal particles in the water, ensuring a higher purity of the water sample entering subsequent testing stages.

[0022] The water sample filtered by membrane 17 eventually reaches the input end of monitoring device 15 inside the mounting base 5. During this process, the upper surface of the top cleaning plate 21, mounted on top of the fixing plate 16, is in contact with the input end of monitoring device 15. When the fixing plate 16 rotates, the top cleaning plate 21 slides relative to the input port of monitoring device 15, continuously scraping away any tiny impurities or biofilm that may accumulate at the port, ensuring that the inlet of monitoring device 15 remains unobstructed, thereby guaranteeing the accuracy and stability of water quality monitoring data.

[0023] When a monitoring point needs to be changed, motor 7 rotates in the reverse direction, driving roller 9 to reverse as well, retracting the wire harness 12 and pulling up the fixing anchor 11. During this retraction process, roller 9 also drives the rotating main shaft 14 and fixing plate 16 to rotate in the reverse direction via cross 13. The side cleaning plate 18 and top cleaning plate 21 then perform reverse cleaning on the inner wall of filter tank 6 and the input end of monitoring equipment 15, thoroughly removing residual impurities from the previous monitoring point. When the device moves to a new location and lowers the fixing anchor 11 again, the above cleaning process is repeated in the forward direction. This reciprocating bidirectional cleaning design effectively avoids cross-contamination of water samples between different monitoring points and solves the technical problem of cross-sample analysis in water quality monitoring.

[0024] In addition, the bracket 3 on top of the main body 1 is used to support the solar panels 4. When the device floats on the water, the multiple solar panels 4 can convert solar energy into electrical energy, providing continuous power support for the motor 7, monitoring equipment 15 and other power-consuming units, ensuring long-term unattended automatic operation of the device.

[0025] Example 2, as Figure 1 , Figure 2 and Figure 6 As shown, based on Embodiment 1, the filtration device further includes a protective mechanism disposed on the outside of the filter barrel 6; the protective mechanism includes multiple mounting plates 22 installed on the inside and outside of the filter barrel 6, and sliding plates 23 are slidably disposed inside the multiple mounting plates 22, protective plates 27 are installed at the ends of the sliding plates 23, and elastic ropes 26 are disposed between the multiple protective plates 27. The mounting plate 22 contains a second spring 24, with one end of the spring 24 installed inside the mounting plate 22 and the other end abutting against the sliding plate 23. Multiple protective plates 27 and elastic resistance ropes 26 are all located on the outside of the filter barrel 6, and a through hole 25 is provided in the middle of each protective plate 27. The protective mechanism is described in detail below: In this embodiment, multiple protective plates 27 are provided around the filter barrel 6. Each protective plate 27 is slidably engaged with a mounting plate 22 installed inside the filter barrel 6 via a sliding plate 23 connected to its inner side. Under normal conditions, the sliding plate 23 is pushed outward by the elastic force of a spring 24 located inside the mounting plate 22, keeping the protective plate 27 in an outwardly extended state, forming a physical barrier around the outside of the filter barrel 6.

[0026] When an object such as a floating object or aquatic organism in the water impacts the protective plate 27, the protective plate 27 will bear the impact force and transmit this force to the second spring 24 through the sliding plate 23. After being subjected to force, the second spring 24 will compress and deform, absorbing and buffering most of the impact kinetic energy, allowing the protective plate 27 to retract inward to avoid the impact, thereby effectively weakening the direct impact force of the external object on the filter barrel 6 and protecting the cylindrical structure of the filter barrel 6 from damage.

[0027] Meanwhile, adjacent protective plates 27 are interconnected by elastic restraint ropes 26. When a single protective plate 27 retracts due to impact, the elastic restraint ropes 26 pull on adjacent protective plates 27, allowing multiple protective plates 27 to work together to disperse and bear external loads, preventing stress concentration in one area. When the impact force disappears, the elastic restoring force of spring 24 pushes the sliding plate 23 and the protective plate 27 back to their initial extended positions, and the elastic restraint ropes 26 also reset.

[0028] In addition, a through hole 25 is provided in the middle of the protective plate 27. This through hole 25 is designed to block large particles or long strips of aquatic plants, while water carrying fine particles can flow freely through the through hole 25 and contact the side wall filter screen of the filter canister 6. This ensures that water samples can smoothly enter the filter canister 6 for filtration, while effectively preventing excessively large foreign objects from directly impacting or becoming entangled in the filter screen, causing blockage or damage. This protective mechanism effectively improves the survivability and operational stability of the filter canister 6 under harsh hydrological conditions in the field, extending the overall service life of the device.

[0029] The above specific embodiments are merely several optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A filtration device for environmental water quality monitoring, comprising an installation body (1), a float (2) installed on the outer wall of the installation body (1), and a device mounting base (5) installed at the bottom of the installation body (1), characterized in that: The mounting body (1) is rotatably equipped with a wire roller (9), and a toothed ring (10) is installed on the outer wall of the wire roller (9). The top of the float (2) is equipped with a motor (7), and the output end of the motor (7) is equipped with a gear (8) that meshes with the toothed ring (10). The filter device also includes a filter mechanism installed at the bottom of the equipment mounting base (5). The filtration mechanism includes a filter barrel (6) installed at the bottom of the equipment mounting base (5). A rotating spindle (14) is connected to the middle of the filter barrel (6), and a fixing plate (16) is installed on the outer wall of the rotating spindle (14). A top cleaning plate (21) is installed on the top of the fixing plate (16), and a filter membrane (17) is installed in the middle. A side cleaning plate (18) is slidably arranged on the inner and outer sides of the fixing plate (16), and a telescopic shaft (19) and a spring (20) are arranged between the side cleaning plate (18) and the fixing plate (16). The rotating spindle (14) passes through the equipment mounting base (5) and is located inside the mounting body (1). The rotating spindle (14) is connected to the roller (9) through a cross (13).

2. The filtration device for environmental water quality monitoring according to claim 1, characterized in that, The wire roller (9) is provided with a wire harness (12) inside, and a fixed anchor (11) is installed at the end of the wire harness (12).

3. The filtration device for environmental water quality monitoring according to claim 2, characterized in that, One end of the spring (20) is installed inside the side cleaning plate (18), and the other end abuts against the inside of the fixing plate (16). The spring (20) is sleeved on the outer wall of the telescopic shaft (19).

4. The filtration device for environmental water quality monitoring according to claim 3, characterized in that, The device mounting base (5) is equipped with a monitoring device (15), the mounting body (1) is equipped with a bracket (3) on top, and the bracket (3) is equipped with multiple solar panels (4) on its outer wall.

5. A filtration device for environmental water quality monitoring according to claim 4, characterized in that, The upper surface of the top cleaning plate (21) is in contact with the input end of the monitoring device (15), and the side cleaning plate (18) is slidably disposed on the inner wall of the filter barrel (6).

6. A filtration device for environmental water quality monitoring according to claim 1, characterized in that, The filtration device also includes a protective mechanism located on the outside of the filter barrel (6); The protective mechanism includes multiple mounting plates (22) installed inside and outside the filter barrel (6), and each of the multiple mounting plates (22) has a sliding plate (23) slidably disposed inside, and a protective plate (27) is installed at the end of the sliding plate (23), and an elastic barrier rope (26) is disposed between the multiple protective plates (27).

7. A filtration device for environmental water quality monitoring according to claim 6, characterized in that, The mounting plate (22) is provided with a second spring (24), and one end of the second spring (24) is installed inside the mounting plate (22), while the other end abuts against the sliding plate (23).

8. A filtration device for environmental water quality monitoring according to claim 7, characterized in that, Multiple protective plates (27) and elastic barrier ropes (26) are arranged on the outside of the filter barrel (6), and a through hole (25) is provided in the middle of the protective plate (27).

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