Small micro-wetland hydrology automatic control device
By installing automatic control devices for purification pipe networks and overflow pipe networks in small wetlands, the problem of low purification efficiency of aquatic plants has been solved, achieving rapid water purification and flood protection, and protecting the surrounding environment and infrastructure safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WENZHOU UNIV
- Filing Date
- 2025-06-17
- Publication Date
- 2026-06-16
AI Technical Summary
Small wetlands rely on aquatic plants for water purification, but this method is subject to seasonality and has limited pollutant removal capacity, making it difficult to meet the needs of water quality improvement and ecological restoration.
An automatic hydrological control device for small wetlands was designed, including a purification pipe network and an overflow pipe network. Multiple purification stations and overflow stations are set up. The purification stations automatically purify the wetland water, and the overflow stations are used to store and control the water during floods to prevent flooding.
It achieves rapid water purification without being limited by the growth cycle of aquatic plants, has strong shock resistance, and can quickly restore its purification function after floods, protecting the surrounding environment and infrastructure safety and reducing the risk of flood disasters.
Smart Images
Figure CN224362637U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hydrological control technology, specifically to an automatic hydrological control device for small wetlands. Background Technology
[0002] Small wetlands refer to wetlands with an area of less than 8 hectares, including various types of wetlands, both natural and artificial, such as small lakes and ponds.
[0003] The water quality of small wetlands is easily affected by various factors, including domestic sewage, agricultural non-point source pollution, and industrial wastewater. Once polluted, it will severely damage the wetland ecosystem, threaten the survival of organisms, and weaken the ecological function of the wetland. Traditionally, aquatic plants have been widely used for water purification in small wetlands. They remove some pollutants from the water through absorption, adsorption, and accumulation, but they have many limitations: on the one hand, the purification effect of aquatic plants is constrained by natural factors such as season, climate, and water temperature. Low temperatures in winter often cause their growth to stagnate or wither, significantly reducing their purification capacity; on the other hand, their ability to remove pollutants is limited, mainly targeting nutrients such as nitrogen and phosphorus and some organic matter in the water. They are not very effective at removing complex pollutants such as heavy metal ions and persistent organic pollutants, making it difficult to meet the needs of water quality improvement and ecological restoration in small wetlands.
[0004] Therefore, this utility model proposes an automatic hydrological control device for small wetlands. Utility Model Content
[0005] The purpose of this invention is to propose an automatic hydrological control device for small wetlands, which solves the many limitations of existing small wetlands that use aquatic plants for water purification.
[0006] To achieve the above objectives, this utility model proposes an automatic hydrological control device for small wetlands, including a wetland body, a purification pipe network and an overflow pipe network connected to the wetland body, and multiple purification stations and overflow stations distributed along the shore of the wetland body.
[0007] Optionally, the purification pipeline network includes a purification inlet pipe and a purification outlet pipe connected at one end to the main body of the wetland, and a purification connection pipe for connecting adjacent purification stations.
[0008] Optionally, the overflow network includes an overflow inlet pipe and an overflow outlet pipe connected at one end to the wetland body, an overflow connecting pipe for connecting adjacent overflow stations, and an overflow purification pipe for connecting overflow stations and purification stations.
[0009] Optionally, the number of overflow stations and purification stations may be the same.
[0010] Optionally, the number of purified water inlet pipes is one, and the number of purified water outlet pipes is equal to the number of purification stations.
[0011] Optionally, the height distance between the overflow inlet pipe and the lowest point of the wetland body is greater than the height distance between the purification inlet pipe and the lowest point of the wetland body.
[0012] Optionally, the purification station includes a filter well, a filter assembly installed in the filter well, a well pump installed on the filter assembly, a water purification device whose inlet is connected to the well pump, and whose outlet is connected to a purified water outlet pipe.
[0013] Optionally, adjacent filter wells are connected by a purification connecting pipe. A gate assembly for controlling the opening and closing of the purification connecting pipe is installed in the filter well. The gate assembly is movably connected to the filter assembly. The cross-section of the filter well is rectangular. The gate assembly and the filter assembly are provided with a connection structure.
[0014] Optionally, the filter assembly includes guide rails mounted on two parallel side walls of the filter well, a lifting frame mounted on the guide rails, an installation frame disposed within the lifting frame, a filter screen mounted on the installation frame, a pumping pipe disposed at the top of the lifting frame and connected to the water inlet of the well pump, and a water passage groove disposed on the installation frame; the well pump is mounted at the top of the lifting frame; and a connecting structure is disposed on the lifting frame and the gate assembly.
[0015] Optionally, the water pump is located in the middle of the lifting frame, and the filter screen is distributed around the water pump; the top of the lifting frame is connected to a pull rope, and the other end of the pull rope is connected to a traction power component.
[0016] Optionally, the gate assembly includes a gate seat mounted on the side wall of the filter well, a gate mounted on the gate seat, a screw rod mounted on the gate and connected to the gate, and a power source mounted on the gate seat and connected to the screw rod; the connecting structure is provided on the gate seat, the gate and the lifting frame.
[0017] Optionally, the connection structure includes a movable groove on the gate, a limit block movably installed in the movable groove, a linkage block installed on the lifting frame, a lifting groove on the gate corresponding to the linkage block, an L-shaped limit plate installed on the top of the limit block, and an electric cylinder installed on the gate seat; the lifting groove is connected to the movable groove.
[0018] Optionally, the slotting direction of the lifting groove is perpendicular to the slotting direction of the moving groove.
[0019] Optionally, the electric cylinder can push the L-shaped limit plate to move, and the L-shaped limit plate drives the limit block to move along the moving groove; the gate seat is provided with an avoidance groove corresponding to the L-shaped limit plate.
[0020] Optionally, the overflow station includes an overflow well and a water level sensor installed inside the overflow well.
[0021] Optionally, the overflow septic pipe is used to connect the overflow well and the filter well.
[0022] Optionally, the overflow connector is used to connect to an adjacent overflow well.
[0023] Alternatively, the water in the overflow well flows into the filter well through the overflow purification pipe.
[0024] Optionally, the minimum straight-line distance between the overflow connecting pipe and the bottom of the overflow well is greater than the minimum distance between the overflow purification pipe and the bottom of the overflow well.
[0025] Compared with the prior art, this utility model provides an automatic hydrological control device for small wetlands, which has the following beneficial effects:
[0026] This small wetland hydrological automatic control device, through the setting of a purification station, draws water from the wetland for purification, and then returns the water back to the wetland after purification. The entire purification process is not limited by natural conditions such as the growth cycle of aquatic plants and sunlight, and can quickly reduce the concentration of pollutants in the water in a short period of time, so that the water quality can be improved in a timely and effective manner.
[0027] Furthermore, during floods, large amounts of sewage rush into wetlands, potentially submerging, washing away, or killing aquatic plants, thereby damaging the entire aquatic plant purification system and rendering it ineffective. This application utilizes purification stations to purify wetlands, which typically possess a certain degree of shock resistance and can quickly resume operation after floods, continuing their purification function and maintaining stable wetland water quality. In conjunction with overflow stations, excess water can be channeled through the overflow network during floods, preventing floodwaters from overflowing dikes or protective facilities and inundating surrounding areas. This protects the lives and property of nearby residents and infrastructure from flood damage. During floods, water levels are controlled within a safe range, preventing excessively high water levels from threatening water conservancy facilities and the surrounding environment. Simultaneously, it ensures stable water levels in downstream rivers, reducing the risk of flood disasters. Attached Figure Description
[0028] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0029] Figure 2 This is a structural schematic diagram of the purification station of this utility model.
[0030] Figure 3 This is a schematic diagram showing the connection between the filter well and the overflow well of this utility model.
[0031] Figure 4 This is a structural schematic diagram of the purification station of this utility model.
[0032] Figure 5 This is a schematic diagram of the structure inside the filter well of this utility model.
[0033] Figure 6This is a structural schematic diagram of the filter assembly and gate assembly of this utility model.
[0034] Figure 7 This is a cross-sectional view of the lifting frame of this utility model.
[0035] Figure 8 This is a schematic diagram of the structure of the gate assembly of this utility model.
[0036] The diagram shows: 1. Main wetland structure; 2. Purification pipe network; 21. Purification inlet pipe; 22. Purification outlet pipe; 23. Purification connecting pipe; 3. Overflow pipe network; 31. Overflow inlet pipe; 32. Overflow outlet pipe; 33. Overflow connecting pipe; 34. Overflow purification pipe; 4. Purification station; 41. Filter well; 42. Filter assembly; 421. Guide rail; 422. Lifting frame; 423. Mounting frame; 424. Filter screen; 425. Pumping pipe; 426. Water passage trough; 427. Pull rope; 428. Pulling rope. 43. Power supply assembly; 44. Well pump; 45. Water purification equipment; 46. Gate assembly; 47. Gate seat; 48. Gate; 49. Screw; 40. Power source; 41. Lifting slot; 42. Connecting seat; 43. Connecting pin; 44. Connecting structure; 45. Moving slot; 46. Limiting block; 47. Linkage block; 48. Lifting slot; 49. L-shaped limiting plate; 40. Electric cylinder; 41. Clearance slot; 52. Overflow station; 53. Overflow well; 54. Water level sensor. Detailed Implementation
[0037] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, illustrates the present invention. Numerous specific details are set forth in the description below to provide a thorough understanding of the invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0038] The automatic hydrological control device for small wetlands disclosed in this application is applicable to small wetlands that are prone to flooding and require water purification. It can also be used in other similar application scenarios. The following is a detailed description of the automatic hydrological control device for small wetlands.
[0039] See appendix Figure 1 — Figure 8 The diagram shows a preferred embodiment of an automatic hydrological control device for small wetlands according to this application. The automatic hydrological control device for small wetlands includes a wetland body 1, a purification pipe network 2 and an overflow pipe network 3 connected to the wetland body 1, and multiple purification stations 4 and overflow stations 5 distributed along the shoreline of the wetland body 1.
[0040] This utility model uses a purification pipe network 2 to connect multiple purification stations 4, transporting water from the wetland body 1 to the purification stations 4 for water purification, and then transporting the purified water back to the wetland body 1. An overflow pipe network 3 connects multiple overflow stations 5, allowing water to be temporarily stored at the overflow stations 5 during floods, preventing floodwaters from overflowing dikes or protective facilities and inundating surrounding areas, thus protecting the lives and property of nearby residents and infrastructure from flood damage, and keeping water levels within a safe range during floods.
[0041] See appendix Figure 1 — Figure 3 As shown, in this utility model, the purification pipe network 2 includes a purification inlet pipe 21 and a purification outlet pipe 22 connected at one end to the wetland body 1, and is used to connect the purification connecting pipe 23 of the adjacent purification station 4; wherein, there is one purification inlet pipe 21, which is connected to the first water purification station, so that the water of the wetland body 23 can enter the purification station 4 for purification; the number of purification outlet pipes 22 is equal to the number of purification stations 4, one end of the purification outlet pipe 22 is connected to the last water purification station 4, and the other end is connected to the wetland body 1.
[0042] See appendix Figure 1 — Figure 3 As shown, in this utility model, the overflow pipe network 3 includes an overflow inlet pipe 31 and an overflow outlet pipe 32 connected at one end to the wetland body 1, an overflow connecting pipe 33 for connecting the adjacent overflow station 5, and an overflow purification pipe 34 for connecting the overflow station 5 and the purification station 4.
[0043] This invention, through the installation of an overflow inlet pipe 31, guides water into an overflow station 5 for temporary storage when the water level of the wetland rises during floods. This prevents floodwaters from overflowing dikes or protective facilities and inundating surrounding areas, protecting the lives and property of nearby residents and infrastructure from flood damage. During floods, the water level is controlled within a safe range. There is one overflow inlet pipe 31, connected to the first overflow station 5. The first overflow station 5 is connected to the first water purification station 4 via an overflow purification pipe 34. There is one overflow outlet pipe 32, connected to the last overflow station 5. An overflow connecting pipe 33 connects multiple overflow stations 5. The overflow purification pipe 34 connects the overflow stations 5 and purification stations 4, ensuring that water entering the overflow stations 5 is purified by the corresponding purification station 4, thereby reducing the impact of floods on water quality.
[0044] In this invention, the height distance between the overflow inlet pipe 21 and the lowest point of the wetland body 1 is greater than the height distance between the purification inlet pipe 21 and the lowest point of the wetland body 1; thereby ensuring that...
[0045] See appendix Figure 1 — Figure 5 As shown, in this utility model, the number of overflow stations 5 and purification stations 4 are the same; wherein, the purification station 4 includes a filter well 41, a filter assembly 42 installed in the filter well 41, a well pump 43 installed on the filter assembly 42, and a water purification device 44 whose inlet end is connected to the well pump 43, and whose outlet end is connected to the purification outlet pipe 22; wherein, adjacent filter wells 41 are connected through the purification connecting pipe 23, and a gate assembly 45 for controlling the opening and closing of the purification connecting pipe 23 is installed in the filter well 41, and the gate assembly 45 is movably connected to the filter assembly 42; the cross-section of the filter well 41 is rectangular; the gate assembly 45 and the filter assembly 42 are provided with a connecting structure 46.
[0046] This invention utilizes a filter well 41 for temporary storage of water in the wetland body 1; a filter assembly 42 for filtering the water; a well pump 43 for pumping the filtered water into a water purification device 44; and a gate assembly 45 for controlling the connection of the purification connecting pipe 23. This means that if one purification station 4 can purify the water, the other purification stations 4 can remain inactive, thereby reducing equipment wear and operating costs. It should be noted that the water purification device 44 is prior art, a readily available device for water purification on the market, and therefore will not be described in detail here.
[0047] See appendix Figure 4 — Figure 6 As shown, in this utility model, the filter assembly 42 includes a guide rail 421 installed on two parallel side walls of the filter well 41, a lifting frame 422 installed on the guide rail 421, an installation frame 423 disposed inside the lifting frame 422, a filter screen 424 installed on the installation frame 423, a pumping pipe 425 disposed at the top of the lifting frame 422 and connected to the water inlet end of the well pump 43, and a water passage groove 426 disposed on the installation frame 423; the well pump 43 is installed at the top of the lifting frame 422; and the connecting structure 46 is disposed on the lifting frame 422 and the gate assembly 45.
[0048] This utility model uses a guide rail 421 to guide the lifting and lowering movement of the lifting frame 422; a mounting frame 423 to provide an installation position for the filter screen 424; the filter screen 424 can filter water; the pumping pipe 425, in conjunction with the well pump 43, can pump the filtered water and transport it into the water purification equipment 44; the water tank 426 allows the water to come into contact with the filter screen 424 for filtration; it should be noted that the connecting pipe between the well pump 43 and the water purification equipment 44 is a flexible hose.
[0049] See appendix Figure 4 — Figure 6 As shown, in this utility model, the water pumping pipe 425 is located in the middle of the lifting frame 422, and the filter screen 424 is distributed around the water pumping pipe 425; the top of the lifting frame 422 is connected to a pull rope 427, and the other end of the pull rope 427 is connected to a traction power component 428.
[0050] This invention ensures that the water pumped by the well pump 43 is filtered water by placing the water pumping pipe 425 in the middle of the lifting frame 422 and having a filter screen 424 distributed around the water pumping pipe 425. The lifting frame 422 can be moved up and down by the pull rope 427 and the traction power assembly 428, allowing for cleaning and replacement of the filter screen 424 and maintenance / replacement of the well pump 43. It should be noted that the traction power assembly 428 includes a support frame, a motor mounted on the frame, a rotating roller movably mounted on the frame and connected to the motor, and one end of the pull rope 427 connected to the rotating roller. When the motor drives the rotating roller to rotate, the pull rope 427 will either wrap around or detach from the rotating roller, causing the lifting frame 422 to move up and down. The traction power assembly 428 is prior art and will not be described in detail in this application.
[0051] See appendix Figure 4 — Figure 8 As shown, in this utility model, the gate assembly 45 includes a gate seat 451 installed on the side wall of the filter well 41, a gate 452 installed on the gate seat 451, a screw 453 installed on the gate 452 and connected to the gate 452, and a power source 454 installed on the gate seat 451 and connected to the screw 453; the connecting structure 46 is provided on the gate seat 451, the gate 452 and the lifting frame 422.
[0052] This utility model provides installation conditions for the gate 452 through the gate seat 451; the gate 452 is used to control the opening and closing of the purification connecting pipe 23; and the screw 453, in conjunction with the power source 454, can drive the gate 452 to move up and down. It should be noted that the screw 453 is provided with a lifting slot 456, and a connecting seat 457 is installed on the top of the gate 452. A connecting pin 458 located within the lifting slot 456 is installed on the connecting seat 457.
[0053] See appendix Figure 4 — Figure 8 As shown, in this utility model, the connecting structure 46 includes a movable groove 461 disposed on the gate 452, a limiting block 462 movably installed in the movable groove 461, a linkage block 463 installed on the lifting frame 422, a lifting groove 464 disposed on the gate 452 corresponding to the linkage block 463, an L-shaped limiting plate 465 installed on the top of the limiting block 462, and an electric cylinder 466 installed on the gate seat 451; the lifting groove 464 is connected to the movable groove 461.
[0054] This utility model uses the movable groove 461 to provide movement adjustment for the limit block 462; the linkage block 463, in conjunction with the limit block 462, enables the lifting frame 422 to drive the gate 452 to move synchronously; the lifting groove 464 is used to avoid the linkage block 463; and the electric cylinder 466, in conjunction with the L-shaped limit plate 465, can drive the limit block 462 to move along the movable groove 461.
[0055] See appendix Figure 7 and Figure 8 As shown, in this utility model, the slotting direction of the lifting groove 464 is perpendicular to the slotting direction of the moving groove 461; the electric cylinder 466 can push the L-shaped limiting plate 465 to move, and the limiting block 462 is driven to move along the moving groove 461 through the L-shaped limiting plate 465; the gate seat 451 is provided with an avoidance groove 467 corresponding to the L-shaped limiting plate 465.
[0056] By setting the clearance groove 467, this utility model can avoid the L-shaped limit plate 465, so that the electric cylinder 466 can drive the L-shaped limit plate 465 to move. It should be noted that electric cylinders 466 are installed on both sides of the clearance groove 467. One of them pushes the L-shaped limit block 465 to move, so that the gate 452 is limited, and the other pushes the L-shaped limit block 465 to reset, so that the gate 452 is reset.
[0057] See appendix Figure 1 — Figure 3As shown, in this utility model, the overflow station 5 includes an overflow well 51, a water level sensor 52 installed in the overflow well 51, and a controller connected to the water level sensor 52; the overflow purification pipe 34 is used to connect the overflow well 51 and the filter well 41; the overflow connecting pipe 33 is used to connect adjacent overflow wells 51.
[0058] This utility model uses an overflow well 51 to temporarily store water; and uses a water level sensor 52 to monitor the water level in the overflow well 51. It should be noted that when the water level in the overflow well 51 reaches a certain level...
[0059] See appendix Figure 1 — Figure 3 As shown, in this utility model, the water in the overflow well 51 flows into the filter well 41 through the overflow purification pipe 34; the minimum straight-line distance between the overflow connecting pipe 33 and the bottom of the overflow well 51 is greater than the minimum distance between the overflow purification pipe 34 and the bottom of the overflow well 51.
[0060] This utility model limits the positions of the overflow flow pipe 33 and the overflow purification pipe 34, with the overflow purification pipe 34 located at the bottom of the overflow well 51, ensuring that all water in the overflow well can enter the filter well 41. Through the overflow connecting pipe 33, when the water level in the overflow well 51 reaches a specified height, the water is guided to the next overflow well 51, increasing the water storage capacity.
[0061] See appendix Figure 1 — Figure 8 As shown, the usage process of this utility model is as follows:
[0062] Water within the main wetland 1 enters the filter well 41 of the first purification station 4 through the purification inlet pipe 21. The water then passes through the water trough 426 into the lifting frame 422, and then through the filter screen 424 into the pumping pipe 425. The filtered water is then transported to the water purification equipment 44 on the ground by the well pump 43. The water purification equipment 44 purifies the water, and the purified water flows out through the purification outlet pipe 22 back into the main wetland 1.
[0063] When the purification station 4, which is currently in use, needs maintenance, specifically the filter assembly 42 and the well pump, it cannot purify the water. In this case, the traction power assembly 428 retracts the pull rope 427, pulling the lifting frame 422 upwards. As the lifting frame 422 rises, it drives the linkage block 463 to move upwards along the lifting groove 464 until the linkage block 463 contacts the limit block 462. Then, the traction power assembly 428 continues to retract the pull rope 427, causing the lifting frame 422 and the gate 452 to rise, opening the purification connecting pipe 23. Once the L-shaped limit plate 465 reaches the designated position, with its top positioned within the clearance groove 467, the electric cylinder 466 begins operation, pushing the L-shaped limit plate 465 to move horizontally. This causes the L-shaped limit plate 465 to hook onto the gate seat 451, releasing the limit block 462 from the linkage block 463 and separating the gate 452 from the lifting frame 422. After maintenance is completed, the traction power assembly 428 is used for resetting. Once the lifting frame 422 has descended, the remaining electric cylinder 466 begins operation, causing the L-shaped limit plate 465 to descend, thus lowering the gate 452 and closing the purification connecting pipe.
[0064] When flooding occurs, the water level in the main wetland 1 rises. When it reaches the overflow inlet pipe 31, the water flows through the overflow inlet pipe 31 into the overflow well 51. The overflow well 51 then transports the water to the filter well 41 for purification through the overflow purification pipe 34. As the flooding continues, the water level in the overflow well 51 continues to rise. When it reaches a designated water level, a signal is sent to the controller, indicating that the purification speed of a single water purification station 4 is insufficient. At this time, the controller activates the power source 454 to start the system. The gate 452 of the water purification station 4 is connected to the next water purification station 4. If the water level continues to rise, when it rises to another designated water level, the controller receives a signal and controls the power source 454 of the water purification station 4 to reverse, so that the gate 452 is closed. At this time, the water level of the overflow well 51 rises and flows from the overflow connecting pipe 33 into the next overflow well 51, and then into the next water purification station 4 through the next overflow well 51. This avoids water entering the next filter well 41 from multiple directions at the same time after the water level rises, and avoids turbulence in the well, which would affect the normal operation of the well pump 43.
[0065] The above embodiments are illustrative of this application and are not intended to limit this application. Any simple modifications to this application are within the protection scope of this application.
Claims
1. An automatic hydrological control device for small wetlands, comprising a wetland body (1), characterized in that, It also includes a purification pipe network (2) and an overflow pipe network (3) connected to the wetland body (1), and multiple purification stations (4) and overflow stations (5) distributed along the shore of the wetland body (1). The purification pipeline network (2) includes a purification inlet pipe (21) and a purification outlet pipe (22) connected at one end to the wetland body (1), and a purification connecting pipe (23) for connecting adjacent purification stations (4). The overflow network (3) includes an overflow inlet pipe (31) and an overflow outlet pipe (32) connected to the wetland body (1) at one end, an overflow connecting pipe (33) for connecting adjacent overflow stations (5), and an overflow purification pipe (34) for connecting the overflow station (5) and the purification station (4). The number of overflow stations (5) is the same as the number of purification stations (4).
2. The automatic hydrological control device for small wetlands according to claim 1, characterized in that, The number of the purified water inlet pipe (21) is one, and the number of the purified water outlet pipe (22) is equal to the number of the purification station (4); The height distance between the overflow inlet pipe (31) and the lowest point of the wetland body (1) is greater than the height distance between the purification inlet pipe (21) and the lowest point of the wetland body (1).
3. The automatic hydrological control device for small wetlands according to claim 1 or 2, characterized in that, The purification station (4) includes a filter well (41), a filter assembly (42) installed in the filter well (41), a well pump (43) installed on the filter assembly (42), a water purification device (44) whose inlet end is connected to the well pump (43), and the water outlet end of the water purification device (44) is connected to the purified water outlet pipe (22). The adjacent filter wells (41) are connected through the purification connecting pipe (23). A gate assembly (45) for controlling the opening and closing of the purification connecting pipe (23) is installed in the filter well (41). The gate assembly (45) is movably connected to the filter assembly (42). The cross-section of the filter well (41) is rectangular; The gate assembly (45) and the filter assembly (42) are provided with a connection structure (46).
4. The automatic hydrological control device for small wetlands according to claim 3, characterized in that, The filter assembly (42) includes a guide rail (421) installed on two parallel side walls of the filter well (41), a lifting frame (422) installed on the guide rail (421), an installation frame (423) set inside the lifting frame (422), a filter screen (424) installed on the installation frame (423), a pumping pipe (425) set at the top of the lifting frame (422) and connected to the water inlet of the well pump (43), and a water passage groove (426) set on the installation frame (423). The well pump (43) is installed on top of the lifting frame (422); The connection structure (46) is disposed on the lifting frame (422) and the gate assembly (45).
5. The automatic hydrological control device for small wetlands according to claim 4, characterized in that, The water pumping pipe (425) is located in the middle of the lifting frame (422), and the filter screen (424) is distributed around the water pumping pipe (425); The top of the lifting frame (422) is connected to a pull rope (427), and the other end of the pull rope (427) is connected to a traction power assembly (428).
6. The automatic hydrological control device for small wetlands according to claim 4, characterized in that, The gate assembly (45) includes a gate seat (451) installed on the side wall of the filter well (41), a gate (452) installed on the gate seat (451), a screw (453) installed on the gate (452) and connected to the gate (452), and a power source (454) installed on the gate seat (451) and connected to the screw (453). The connecting structure (46) is installed on the gate seat (451), the gate (452) and the lifting frame (422).
7. The automatic hydrological control device for small wetlands according to claim 6, characterized in that, The connection structure (46) includes a movable groove (461) on the gate (452), a limiting block (462) movably installed in the movable groove (461), a linkage block (463) installed on the lifting frame (422), a lifting groove (464) on the gate (452) corresponding to the linkage block (463), an L-shaped limiting plate (465) installed on the top of the limiting block (462), and an electric cylinder (466) installed on the gate seat (451). The lifting groove (464) is connected to the moving groove (461).
8. The automatic hydrological control device for small wetlands according to claim 7, characterized in that, The slotting direction of the lifting groove (464) is perpendicular to the slotting direction of the moving groove (461); The electric cylinder (466) can push the L-shaped limiting plate (465) to move, and the L-shaped limiting plate (465) drives the limiting block (462) to move along the moving groove (461); The gate seat (451) is provided with a clearance groove (467) corresponding to the L-shaped limit plate (465).
9. The automatic hydrological control device for small wetlands according to claim 3, characterized in that, The overflow station (5) includes an overflow well (51) and a water level sensor (52) installed in the overflow well (51). The overflow purification pipe (34) is used to connect the overflow well (51) and the filter well (41). The overflow connecting pipe (33) is used to connect to the adjacent overflow well (51).
10. The automatic hydrological control device for small wetlands according to claim 9, characterized in that, The water in the overflow well (51) flows into the filter well (41) through the overflow purification pipe (34); The minimum straight-line distance between the overflow connecting pipe (33) and the bottom of the overflow well (51) is greater than the minimum distance between the overflow purification pipe (34) and the bottom of the overflow well (51).