Reservoir ecological restoration system and restoration method

Abstract

The invention discloses a reservoir ecological restoration system which is composed of an ecological restoration device and a floating object intercepting device. The ecological restoration device comprises a device body, a self-priming pump is arranged in the device body, a shifting piece wheel is rotationally arranged at the upper end of the device body, a speed reducer connected with the shifting piece wheel is arranged in the device body, and the speed reducer is connected with a motor. A filter cartridge is fixedly arranged at the upper half part of the device main body, an inner cavity of the filter cartridge is communicated with the shifting piece wheel, and a water suction hopper is fixedly arranged below the filter cartridge; the shifting piece wheel comprises a baffle disc fixedly connected with the output shaft of the speed reducer, a cylinder fixedly connected with the baffle disc, a top plate fixedly connected with the cylinder, and a circle of shifting pieces which are fixedly connected to the peripheral surface of the cylinder and are arranged in an annular array; and a circle of triangular holes for water to pass through are formed in the middle of the baffle disc. The number of ecological restoration devices is reduced, the total energy consumption is reduced, and the restoration work range of the ecological restoration devices is reduced; the construction and operation cost is low, and the maintenance and management difficulty is small; floating object intercepting and catching are targeted, and the improvement effect is fast.

Description

Technical Field

[0001] The present invention relates to, in particular to, a reservoir ecological restoration system and restoration method. Background Art

[0002] Reservoirs are crucial hubs for the storage and regulation of water resources, playing a vital role in ensuring water supply security, maintaining regional ecological balance, and promoting local economic development. However, with the accelerated pace of industrialization and urbanization in China, the ecological environment of reservoirs is facing severe challenges. Effective measures are needed to address the problems of water pollution and ecological damage in reservoirs. As important hydraulic engineering structures, reservoirs not only play a vital role in flood control, irrigation, water supply, and power generation, but also play a crucial role in ecological and environmental regulation. However, due to the persistent impact of pollution sources such as industrial wastewater, agricultural non-point source pollution, and domestic sewage, as well as the reservoirs' inherent poor flow and insufficient self-purification capacity, many reservoirs are facing water quality deterioration and ecological degradation. Therefore, effective efforts should be made to improve the reservoir water environment and restore the aquatic ecosystem. With the strengthening of point source pollution control in my country, non-point source pollution caused by agricultural runoff and urban runoff has gradually become a significant source of pollution in my country's surface waters, especially large, slow-flowing water bodies such as lakes and reservoirs.

[0003] Patent publication number CN105129998A: A three-dimensional ecological restoration and purification process suitable for deepwater reservoirs. It utilizes floating plant islands, filter-feeding fish cages, and submerged plant cages to construct a three-dimensional composite water environment biological purification system for water quality improvement and ecological restoration in deepwater reservoirs. In deepwater reservoirs with relatively simple and fragile ecosystems, this composite system is more conducive to increasing the complexity and stability of the ecosystem than individual floating plant islands, filter-feeding fish cages, or submerged plant cages, thereby achieving better water quality improvement and ecological restoration effects. However, its structure is complex, and biological methods are unlikely to show improvement effects in a short period of time. Cui Xibo mentioned in his paper "Analysis of the Design of a Demonstration Project for Reservoir Water Environment Improvement and Water Ecological Restoration" published in the January 2025 issue of "Low Carbon World": Appropriate water purification technologies should be selected, including physical, chemical, and biological methods, and selected and combined according to specific circumstances. For example, by building sedimentation tanks and filtration systems, suspended particles in the water can be effectively removed to reduce water turbidity, or by increasing the dissolved oxygen content of the water through aeration and oxygenation, the degradation of aerobic microorganisms can be promoted, thereby improving water quality. In addition, in the process of technology application, not only its purification effect should be considered, but also factors such as its scope of application, construction and operation costs, and maintenance and management difficulty should be evaluated. There are also some reservoir ecological restoration devices in the existing technology, such as the patent with publication number CN119240815A: A new type of reservoir water ecological restoration and purification device, which belongs to the technical field of water environment treatment devices. The outer cylinder component, float component, water absorption assembly, water absorption filter component, secondary filter component, and hydraulic drive component can form physical filtration of the water body, and the photocatalytic decomposition component can degrade organic pollutants in the water body. After starting the self-priming pump, on the one hand, it can directly generate suction on the water body, allowing the water in the reservoir to enter the water absorption cylinder, and utilize the lateral filter holes opened in the water absorption cylinder and the secondary filter holes opened in the secondary filter plate to form physical interception and filtration of the water body. On the other hand, when the water body passes through the water absorption pipe, it will drive the rotation of the hydraulic impeller. The hydraulic impeller drives the rotation of the water absorption cylinder through the transmission mechanism, so that the evenly distributed drainage blades can generate vortex force, accelerating the purification and filtration flow rate of the water body. Although it is mentioned that "it can be placed in any area of ​​the reservoir to facilitate purification operations in different areas of the reservoir", if you want to achieve good ecological restoration and water purification effects, multiple devices need to be distributed in different locations of the water body. Multiple devices also increase the frequency of maintenance and damage, resulting in high construction and operation costs and difficult maintenance and management. Summary of the Invention

[0004] The purpose of the present invention is to overcome the defects of the existing technology and provide a reservoir ecological restoration system. The ecological restoration device can salvage floating objects (plastic garbage, etc.) and filter and purify water. It is equipped with a power drive mechanism that can move according to the position of the floating objects. Therefore, one ecological restoration device can cover the floating object salvage work in a small area. At low tide, it freely falls into the drawdown zone of the reservoir to avoid falling to the ground of the drawdown zone and being damaged.

[0005] To achieve the above-mentioned objectives, the technical solution of the present invention is to design a reservoir ecological restoration system, which is composed of an ecological restoration device and a floating object interception device; the ecological restoration device is provided with a plurality of devices and is arranged on one side of the floating object interception device; the ecological restoration device includes a device body, a self-priming pump is provided in the device body, a paddle wheel is rotatably provided at the upper end of the device body, a reducer connected to the paddle wheel is provided in the device body, and the reducer is connected to the motor; the lower end of the paddle wheel is rotatably sealed with the upper end of the device body, a filter cartridge is fixedly provided on the upper half of the device body, the inner cavity of the filter cartridge is connected to the paddle wheel, a water suction hopper is fixedly provided below the filter cartridge, and the water outlet pipe of the water suction hopper is connected to the self-priming pump; The paddle wheel includes a baffle fixedly connected to the output shaft of the reducer, a cylinder fixedly connected to the baffle, a top plate fixedly connected to the cylinder, and a paddle arranged in a circular array fixedly connected to the outer circumference of the cylinder; an opening is provided in the middle of the top plate; a circle of triangular holes for water flow is provided in a circular array in the middle of the baffle, and a circle of square holes for water flow is provided in a circular array on the edge of the baffle; A hole is opened in the middle of the top plate to form an inner flange; the motor adopts a waterproof DC motor or a submersible motor; the reducer adopts an underwater reducer, such as a submersible cycloid pinwheel reducer. The ecological restoration device can salvage floating objects (plastic garbage, etc.) and filter and purify water bodies; it is equipped with a power drive mechanism that can move according to the position of the floating objects, so an ecological restoration device can cover a small area for the salvage of floating objects; it freely falls on the drawdown zone of the reservoir at low tide to avoid falling on the ground of the drawdown zone at low tide and being damaged; when the ecological restoration device reaches the vicinity of the floating object, it does not rotate the paddle wheel on its top. After being driven by the drive mechanism and moving to the vicinity of the floating object, it first sucks water with a self-priming pump, and then starts to rotate the paddle wheel. Through the water suction action, the floating objects are brought into the ecological restoration device along the water flow. On the other hand, due to the rotation of the paddle wheel, it effectively avoids the situation where floating objects with a certain degree of toughness, such as plastic floating objects, are hung or stuck on the upper end of the ecological restoration device when being "sucked" into the ecological restoration device. The paddle wheel is For floating objects caught or stuck on the top of the ecological restoration device, the paddles on the circumferential side of the paddle wheel are appropriately displaced outward, which smooths the "intake" process. Furthermore, the paddle wheel's rotation (through the paddles) ensures that floating objects near the ecological restoration device are dispersed as much as possible during "intake" rather than being "crowded" from a single point. This prevents localized blockage of the ecological restoration device and the resulting overabundance of floating objects when the paddle wheel rotates to centrifugally disperse the absorbed floating objects. (If excessive floating objects accumulate in a local area at the edge of the paddle wheel, some floating objects will be located in the middle of the baffle, blocking the triangular holes in the baffle.) Furthermore, the paddle wheel and the baffle prevent large floating objects from clogging the triangular holes in the baffle. The maximum size of the triangular holes in the baffle is smaller than the average size of floating objects (of course, since floating objects are largely intercepted by the float net, the average size of floating objects that can escape the net is generally smaller than the mesh size of the net), thereby preventing floating objects from passing through the baffle. The rotation of the paddle wheel can centrifugally fling the "sucked-in" floating objects toward the edge of the baffle plate. Combined with the inner flange of the paddle wheel's top plate, the "sucked-in" floating objects can be temporarily stored in the paddle wheel, thereby salvaging or capturing the floating objects. As the paddle wheel rotates, the sucked-in floating objects are centrifugally flung toward the edge of the paddle wheel. Therefore, the triangular hole on the baffle plate (or the middle area of ​​the triangular hole near the center of the baffle plate) will not be blocked by floating objects, allowing the self-priming pump to continue absorbing water, thereby drawing water near the floating objects into the ecological restoration device for filtration and purification. Depending on the amount of floating objects on the surface of the reservoir water, the baffle plate can be set closer to the middle height of the device body (and the inner flange can be set wider) to increase its floating object storage capacity.

[0006] A further technical solution is that a photocatalytic layer is provided inside the water suction hopper, and an ultraviolet lamp is also provided inside the water suction hopper; A further technical solution is that a float is fixedly connected to the outer surface of the device body, a vent valve is provided on the top of the float, a gas cylinder is fixedly connected to one side of the float, and the gas cylinder is connected to the vent valve through an air pipe; the float is arranged near the paddle wheel; a plurality of pairs of support wheels are also provided on the outer surface of the device body, each pair of support wheels is rotatably connected to a seat plate, the seat plate has an end away from the support wheel hinged on a connecting seat, and a plurality of connecting seats are fixedly connected to the outer surface of the device body in an annular array, and a tension spring is provided between the two seat plates of each pair of support wheels, and the two ends of the tension spring are respectively fixedly connected to the middle part of the two seat plates; A further technical solution is that a wet motor is fixedly connected to the bottom surface of the device body, and the output shaft of the wet motor is fixedly connected to the propeller; a metal waterproof cabin is also provided on the bottom surface of the device body, and a steering gear is arranged in the waterproof cabin, and the output shaft of the steering gear is connected to the rudder blade through a rudder arm and a connecting rod; the rudder blade is arranged behind the propeller; A further technical solution is that the floating object interception device is arranged at the drawdown zone of the reservoir and / or the wastewater source discharge point; the floating object interception device is a floating net with a length of 1 to 2 km; A further technical solution is that the mesh size of the drift arresting net is 10-150 mm; or the drift arresting net is composed of a large-mesh main net and a small-mesh auxiliary net arranged at the front end of the large-mesh main net, the mesh size of the large-mesh main net is 50-150 mm, and the mesh size of the small-mesh auxiliary net is 10-50 mm; Since the reservoir water body is exposed to discharges from surrounding domestic wastewater or industrial wastewater sources, floating object interception devices are installed in the drawdown zone of the reservoir on the one hand, and at the wastewater source discharge point on the other hand; floating nets are installed at the wastewater source discharge point to directly intercept floating objects in the discharged wastewater, thereby reducing the dispersion range of floating objects and facilitating the subsequent ecological restoration equipment to filter, purify, salvage and collect them; and for a small number of small-sized floating objects that escape from the net mouth of the floating net, a small number of dispersed ecological restoration devices are used to filter and purify the reservoir water body on the one hand, and to salvage and collect small-sized floating objects on the other hand; and the floating nets installed in the drawdown zone of the reservoir can use the natural rise of water levels during the change of seasons to manually or mechanically salvage and collect small-sized floating objects at low tide, thereby reducing the operating time of the ecological restoration equipment, reducing energy consumption, avoiding equipment loss, reducing the frequency of maintenance, and reducing the probability of maintenance; The ecological restoration device installed in the drawdown zone of the reservoir works at high tide and does not work at low tide; the floating interception net cooperates with the drawdown zone of the reservoir to regularly clean up the floating intercepted objects (floating objects are salvaged and collected by the ecological restoration device at high tide; floating objects are collected manually or mechanically at low tide) to avoid the problem of floating objects on the surface of the reservoir remaining on the surface of the reservoir and affecting the water quality of the reservoir. Since the floating objects are removed regularly, floating objects with pollutants such as garbage, impurities or oil sludge can be cleaned up in time, which can effectively avoid the deterioration of the water quality of the reservoir.

[0007] The drawdown zone of a reservoir, also known as the ebb and flow zone or the ebb and flow area, refers to a special area where the surrounding submerged land is periodically exposed to the water surface due to the seasonal fluctuation of the reservoir water level. The drawdown zone of a reservoir forms a huge ecological isolation zone around the reservoir between the water body and the land bank. It is a special wetland ecosystem with water and land interlaced. The periodic fluctuation of its water level will lead to soil erosion, vegetation destruction, geological disasters and other hazards, threatening the normal functioning of water conservancy and hydropower projects and the sustainable development of the reservoir ecosystem. This plan combines the drawdown zone with a floating object interception device, which is more effective in improving the water quality of the reservoir water body. It can effectively remove the pollution source before the water is polluted, and can play a certain pre-treatment role on the water in the reservoir. A further technical solution is that the mesh size of the floating net at the wastewater source discharge point is 10-50 mm; the mesh size of the floating net at the reservoir drawdown zone is 50-150 mm; A further technical solution is to install a floating net with a mesh size of 5 to 10 mm at the drawdown zone of the reservoir; the upper end of the floating net is fixedly connected to a float, and the lower end is fixedly connected to a counterweight; an opening and closing valve is installed at the bottom of the float, a vent valve is installed at the top of the float, and a high-pressure gas cylinder is fixedly connected to one side of the float; Another technical solution is composed of an ecological restoration device, a floating debris interception device and a floating debris collection robot set up in the drawdown zone of the reservoir for low tide; Low-tide floating debris collection robots use tracked or wheeled chassis to adapt to muddy and uneven terrain, or can be equipped with flotation devices to handle shallow water areas. They can be set to patrol regularly (generally activated after the water level drops) or manually triggered through remote monitoring. Low-tide floating debris collection robots are existing technology and can adopt the crawler-type garbage collection vehicle with publication number CN220847343U. A further technical solution is that a water bag is fixedly arranged on the lower half of the device body and / or the bottom surface of the device body, and the water bag is filled with water to increase the gravity and play a cushioning role when falling on the ground of the drawdown zone; Another technical solution is that a circle of elastic airbags arranged in a circular array is fixedly provided on the outer surface of the lower end of the device body, with spacing between adjacent elastic airbags and airbags fixedly connected to the outer surface of the lower end of the device body between adjacent elastic airbags, and the airbags are connected to the elastic airbags through a connecting tube, and an elastic sheet is provided in the connecting tube, which blocks the connecting tube when the elastic sheet is not under force; The advantages and beneficial effects of the present invention are as follows: the ecological restoration device can salvage floating objects (plastic waste, etc.) and filter and purify water; it is equipped with a power drive mechanism that can move according to the location of the floating objects, so that one ecological restoration device can cover a small area for the salvage of floating objects; it freely falls into the drawdown zone of the reservoir at low tide, avoiding damage caused by falling to the ground in the drawdown zone at low tide; A floating net is set up at the wastewater source discharge point to directly intercept floating objects in the discharged wastewater, thus reducing the dispersion range of the floating objects and facilitating the subsequent ecological restoration equipment to filter, purify, salvage and collect them; and for a small number of small-sized floating objects that escape from the floating net mouth, a small number of dispersed ecological restoration devices are used to filter and purify the reservoir water on the one hand, and salvage and collect the small-sized floating objects on the other hand; and the floating net set up in the drawdown zone of the reservoir can take advantage of the natural rise of the water level during the change of seasons to manually or mechanically salvage and collect small-sized floating objects at low tide, which can reduce the operating time of the ecological restoration equipment, reduce energy consumption, avoid equipment loss, reduce the frequency of repairs, and reduce the probability of maintenance; The ecological restoration device installed in the drawdown zone of the reservoir works at high tide and does not work at low tide; the floating interception net cooperates with the drawdown zone of the reservoir to regularly remove floating objects (floating objects are salvaged and collected by the ecological restoration device at high tide; floating objects are collected manually or mechanically at low tide) to avoid the problem of floating objects on the surface of the reservoir being located on the surface of the reservoir and affecting the water quality of the reservoir. Due to the regular removal of floating objects, floating objects with pollutants such as garbage, impurities or oil sludge can be cleaned up in time, which can effectively prevent the deterioration of the water quality of the reservoir. Combining the drawdown zone with a floating debris interception device is more effective in improving the water quality of the reservoir. It can effectively remove the pollution source before the water is polluted and play a certain role in pre-treating the reservoir water. At low tide, the improved model freely falls onto the ground in the drawdown zone of the reservoir. Due to the setting of the support wheels, it can avoid being damaged by falling onto the ground in the drawdown zone when the tide is low. In addition, since at least two pairs of support wheels are set on the bottom and the periphery of the device body, the support wheels separate and move away from each other after contacting the ground, making the "landing" process closer to a "soft landing" (due to gravity, the tension spring is stretched, absorbing part of the impact when landing). Because the floating net basically intercepts all floating objects on one side, it is set up in a targeted manner to reduce the number of ecological restoration devices, reduce overall energy consumption, and reduce the scope of restoration work of the ecological restoration devices; the number of ecological restoration devices required is small, and it also makes full use of the ebb and flow of the reservoir water body itself, so that the ecological restoration devices can "rest" when the tide recedes, so the construction and operation costs are low, and maintenance and management are easy; it uses mechanical methods, the system is not complicated, the structure is relatively simple, and the interception and capture of floating objects is targeted, and the improvement effect is fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is a schematic diagram of an ecological restoration device in a first embodiment of a reservoir ecological restoration system according to the present invention; Figure 2 yes Figure 1 The main view; Figure 3 yes Figure 2Left view of; Figure 4 yes Figure 3 BB cross-sectional view; Figure 5 yes Figure 2 Schematic diagram of the middle float after rotating 90° clockwise; Figure 6 yes Figure 2 Right view; Figure 7 yes Figure 6 Schematic diagram of the exploded device body and propeller; Figure 8 Schematic diagram of the drift-blocking net in Example 1 of the present invention; Figure 9 This is a schematic diagram of the minimum-sized drift-blocking net in the second embodiment of the present invention after operation; Figure 10 is a schematic diagram of a fifth embodiment of the present invention; Figure 11 yes Figure 10 Schematic diagram of the elastic airbag and airbag parts.

[0009] In the figure: 1. Device body; 2. Self-priming pump; 3. Paddle wheel; 4. Motor; 5. Filter cartridge; 6. Water suction bucket; 7. Baffle; 8. Cylinder; 9. Top plate; 10. Paddle; 11. Triangular hole; 12. Square hole for water flow; 13. Ultraviolet lamp; 14. Support plate; 15. Float; 16. Vent valve; 17. Gas cylinder; 18. Support wheel; 19. Seat plate; 20. Connecting seat; 21. Tension spring; 22. Propeller; 23. Float arresting net; 24. Counterweight; 25. Opening and closing valve; 26. Vent valve; 27. High-pressure gas cylinder; 28. Elastic airbag; 29. ​​Air bag; 30. Elastic sheet. DETAILED DESCRIPTION

[0010] The following embodiments are further described in conjunction with the accompanying drawings and examples. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention.

[0011] Example 1: Figures 1 to 8 As shown, the present invention is a reservoir ecological restoration system, which consists of an ecological restoration device and a floating object interception device; the ecological restoration device is provided with a plurality of devices and is arranged on one side of the floating object interception device; the ecological restoration device includes a device body 1, a self-priming pump 2 is provided in the device body, a paddle wheel 3 is rotatably provided at the upper end of the device body, a reducer connected to the paddle wheel 3 is provided in the device body, and the reducer is connected to the motor 4; the lower end of the paddle wheel 3 is rotatably sealed with the upper end of the device body 1, a filter cartridge 5 is fixedly provided on the upper half of the device body 1, the inner cavity of the filter cartridge 5 is connected to the paddle wheel 3, a water suction hopper 6 is fixedly provided below the filter cartridge 5, and the water outlet pipe of the water suction hopper is connected to the self-priming pump 2; The paddle wheel includes a baffle 7 fixedly connected to the output shaft of the reducer, a cylinder 8 fixedly connected to the baffle, a top plate 9 fixedly connected to the cylinder (the cylinder is located between the baffle and the top plate and is made of a rectangular plate bent and connected at the ends), and a paddle 10 fixedly connected to the outer circumference of the cylinder in an annular array. An opening is provided in the middle of the top plate; a circle of triangular holes 11 for water flow is provided in the middle of the baffle, and a circle of square holes 12 for water flow are provided in an annular array on the edge of the baffle. The interior of the water suction hopper 6 is provided with a photocatalytic coating layer, and an ultraviolet lamp 13 is also provided inside the water suction hopper 6; The lower portion of the device body 1 is provided with a support plate 14 fixedly connected to the inner sidewall of the device body. The self-priming pump 2 is fixedly connected to the lower surface of the support plate, and the motor 4 and reducer are fixedly connected to the upper surface of the support plate. The outlet pipe of the water suction hopper 6 is installed through the support plate 14. The ultraviolet lamp 13 is fixedly connected to the lower surface of the filter cartridge 5. This arrangement allows ultraviolet rays to form a photocatalytic reaction with the photocatalytic coating applied to the inner wall of the water suction hopper. The water filtered from the filter cartridge 5 passes through the water suction hopper 6 and then enters the self-priming pump, and is finally discharged from the water outlet of the self-priming pump. Therefore, the photocatalytic reaction formed in the cavity of the water suction hopper can degrade organic matter in the circulating water.

[0012] A float 15 is also fixedly connected to the outer surface of the device body 1. A vent valve 16 is provided on the top of the float. A gas cylinder 17 is also fixedly connected to one side of the float, and the gas cylinder is connected to the vent valve via an air pipe. The float 15 is arranged near the paddle wheel 3 (four, six, or eight floats can be symmetrically arranged and evenly distributed around the periphery of the device body). The outer surface of the device body 1 is also provided with several pairs of support wheels 18, each pair of support wheels is rotatably connected to a seat plate 19, and the end of the seat plate away from the support wheel 18 is hinged to a connecting seat 20. Several connecting seats 20 are fixedly connected to the outer surface of the device body in an annular array. A tension spring 21 is provided between the two seat plates of each pair of support wheels, and the ends of the tension spring are respectively fixedly connected to the middle part of the two seat plates 19. Several connecting seats are fixedly connected to the outer surface of the device body in a circular array, and the central axis of the circular array of several connecting seats is coaxial with the central axis of the paddle wheel; two pairs of support wheels are provided on the bottom surface of the device body, and the structure of the two pairs of support wheels is similar to that of the support wheels on the outer circle of the device body; the ecological restoration device has a basic version and an improved version, and the improved version is used in the drawdown zone of the reservoir (used before low tide to salvage or suck in floating objects located in the drawdown zone of the reservoir); in this way, the improved version falls freely to the ground of the drawdown zone of the reservoir at low tide. Due to the setting of the support wheels, it can avoid falling to the ground of the drawdown zone at low tide and being damaged, and since at least two pairs of support wheels are provided on the bottom and surrounding surfaces of the device body, the support wheels separate and move away from each other after contacting the ground, making the "landing" process closer to a "soft landing" (due to gravity when landing, the tension spring is pulled open, absorbing part of the impact when landing). The float on the ecological restoration device is first filled with a certain amount of gas from a gas cylinder, allowing the device to move to the target area under the power of the propeller and rudder blades. Then, after reaching the floating object, the float is further inflated until the reservoir water flows into the paddle wheel and into the ecological restoration device. The inflation valve on the top is opened when it is necessary to release the air.

[0013] A wet motor is fixedly connected to the bottom surface of the device body, and the output shaft of the wet motor is fixedly connected to the propeller 22. A metal waterproof cabin is also provided on the bottom surface of the device body, and a steering gear is arranged in the waterproof cabin. The output shaft of the steering gear is connected to the rudder blade through a rudder arm and a connecting rod. The rudder blade is arranged behind the propeller. After the servo receives a control signal (such as a PWM signal), the internal motor drives the output shaft to rotate (usually within the range of ±60° to 180°); the rudder arm is fixedly connected to the servo output shaft and rotates synchronously with the output shaft. One end of the connecting rod (the connecting rod is generally a metal rod or a carbon fiber rod) is hinged to the rudder arm, and the other end is connected to the tiller. When the rudder arm swings, the connecting rod is pushed and pulled; the tiller is a metal arm fixed to the rudder shaft (vertical rotation axis), and the push and pull force of the connecting rod drives the rudder handle to swing left and right. The rudder shaft is fixedly connected to the rudder blade, so when the rudder handle swings, the rudder shaft rotates, causing the rudder blade to deflect. With this setting, the ecological restoration device can be moved near the floating object and then the self-priming pump is started to "suck" the floating object. The floating object interception device is set at the drawdown zone of the reservoir and / or the wastewater source discharge point; the floating object interception device is a floating net 23 with a length of 1 to 2 km; The mesh size of the drift arresting net is 10-150 mm; or the drift arresting net is composed of a large-mesh main net and a small-mesh auxiliary net arranged at the front end of the large-mesh main net, the mesh size of the large-mesh main net is 50-150 mm, and the mesh size of the small-mesh auxiliary net is 10-50 mm; For small floating objects (such as leaves and plastic debris), a mesh size of 10-50 mm is used. This is particularly suitable for applications requiring precise interception at drainage outlets. For medium-sized floating objects (such as branches and household garbage), a mesh size of 50-150 mm is used, particularly suitable for waterways, ports, and reservoirs. Therefore, this solution allows for a small-mesh interception net to be deployed at the wastewater discharge site, while a large-mesh interception net is deployed at the reservoir drawdown zone. This balances interception effectiveness with water flow efficiency and can effectively intercept large floating objects or garbage already in the drawdown zone. (Floating objects that escape the interception net at the wastewater discharge site are recovered by an ecological restoration device installed on the side of the interception net away from the wastewater discharge site.) A composite interception net, consisting of a large-mesh main net and a small-mesh auxiliary net positioned in front of the main net, can effectively intercept a wide range of debris or floating objects of varying sizes.

[0014] Several ecological restoration devices are set up and installed on one side of the floating object interception device, and there are almost no devices on the other side of the floating net (or a small number are set on the other side to deal with small-sized floating objects escaping from the floating net). Because the floating net basically intercepts all floating objects on its side, it is set up in a targeted manner, which reduces the number of ecological restoration devices, reduces overall energy consumption, and reduces the scope of restoration work of the ecological restoration devices; the number of ecological restoration devices required is small, and the rise and fall of the reservoir water body itself is fully utilized. The ecological restoration device can "rest" when the tide recedes, so the construction and operation costs are low, and the maintenance and management difficulty is small; it adopts mechanical methods, the system is not complicated, the structure is relatively simple, and the interception and capture of floating objects are targeted, and the improvement effect is fast.

[0015] The mesh size of the drift net at the wastewater source discharge point is 10-50 mm; the mesh size of the drift net at the reservoir drawdown zone is 50-150 mm; Example 2: The difference from Example 1 is that Figure 9 As shown, a floating net 23 with a mesh size of 5 to 10 mm is also provided at the drawdown zone of the reservoir; a float 15 is fixedly connected to the upper end of the floating net, and a counterweight 24 is fixedly connected to the lower end; an opening and closing valve 25 is provided at the bottom of the float, a vent valve 26 is provided at the top of the float, and a high-pressure gas cylinder 27 is fixedly connected to one side of the float; The float is made of HDPE or PE; the float can ensure that the net of the floating net is vertically suspended on the water surface, and the counterweight is a sinker or chain to keep the net upright in the water; after this setting, the floating net with the minimum size of 5~10 mm will not be intercepted first, so that some floating objects escaping from the floating net at the wastewater discharge point, if not salvaged and collected by the ecological restoration device set on the side of the floating net away from the wastewater discharge point, will pass through the floating net with a mesh size of 50~150 mm at the drawdown zone of the reservoir, and then hang up (to be precise, "float") a 5~10 mm floating net to make floating objects "only enter but not exit", further reducing the working frequency or working time of the ecological restoration device and reducing its maintenance cost; the floating net with a mesh size of 50~150 mm at the drawdown zone of the reservoir at the beginning It is installed normally (or hung, or this floating net has been in working condition since installation), and the float 15 on the floating net with a mesh of 5~10 mm is filled with a certain amount of water (so that the gravity of the whole composed of the float, the floating net and the high-pressure gas cylinder is greater than the buoyancy). In this way, the float 15 is submerged under the water surface of the reservoir, so that the floating net with a mesh of 5~10 mm is basically sunk to the bottom of the reservoir. When the season changes and the tide is about to ebb, the high-pressure gas cylinder is controlled to fill the float with high-pressure gas, and the opening and closing valve 25 is opened to discharge the water in the float. The water in the float can be discharged until there is no water in the float (or until the gravity of the whole composed of the float, the floating net and the high-pressure gas cylinder is less than the buoyancy), and then the float automatically floats on the water surface, so that the 5~10 mm floating net begins to intercept (or is hung to start working).

[0016] Example 3: The difference from Example 1 is that a reservoir ecological restoration system is composed of an ecological restoration device, a floating object interception device and a floating object collection robot for low tide set in the drawdown zone of the reservoir.

[0017] Embodiment 4: The difference from Embodiment 1 is that a water bag is fixedly provided on the lower half of the device body and / or the bottom surface of the device body. The water bag is filled with water to increase gravity and act as a buffer when falling on the ground of the drawdown zone. Example 5: The difference from Example 1 is that Figure 10 、 Figure 11 As shown ( Figure 11An air bag can be provided above the elastic air bag in the upper middle portion, that is, the number of elastic air bags provided in a circle of the device body is consistent with the number of air bags, so that when each elastic air bag is squeezed, there is a corresponding air bag to form a second buffer. A circle of elastic air bags 28 arranged in a circular array is fixedly provided on the outer surface of the lower end of the device body 1. There is a spacing between adjacent elastic air bags, and air bags 29 fixedly connected to the outer surface of the lower end of the device body 1 are provided between adjacent elastic air bags 28. The air bags and the elastic air bags are connected by a connecting tube. An elastic sheet is provided in the connecting tube. When the elastic sheet 30 is not under force, it blocks the connecting tube. The support wheels (as well as the water bag or elastic airbag, and airbag) provide effective cushioning upon landing, preventing the ecological restoration device from falling to the ground in the ebb and flow zone during low tide and being damaged. The combination of the elastic airbag and airbag avoids the limited cushioning capacity of the elastic airbag alone, achieving dynamic inflation or graded cushioning (dynamic inflation and graded cushioning require no additional power, instead relying on the descent to the ground, utilizing the energy of the ebb and flow to achieve dynamic inflation and graded cushioning). This provides superior cushioning capacity and a more effective cushioning effect. Because the elastic airbag 28 is provided on the outer surface of the lower end of the device body 1, it forms a primary cushioning layer as the ecological restoration device descends due to low tide until it reaches the ground in the ebb and flow zone. When the elastic airbag 28 is pressurized, the gas within it flows into the airbag 29. When the pressure reaches a level that breaks open the elastic sheet 30, the gas enters the airbag, causing it to swell, forming a secondary cushioning layer. The airbag can be partially pre-filled with gas, ensuring that it is not completely deflated, initially only slightly less full than the elastic airbag.

[0018] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A reservoir ecological restoration system, characterized in that: The invention is composed of an ecological restoration device and a floating object interception device; the ecological restoration device is provided with a plurality of devices and is arranged on one side of the floating object interception device; the ecological restoration device includes a device body, a self-priming pump is provided in the device body, a paddle wheel is rotatably provided at the upper end of the device body, a reducer connected to the paddle wheel is provided in the device body, and the reducer is connected to the motor; the lower end of the paddle wheel is rotatably sealed with the upper end of the device body, a filter cartridge is fixedly provided on the upper half of the device body, the inner cavity of the filter cartridge is connected to the paddle wheel, a water suction hopper is fixedly provided below the filter cartridge, and the water outlet pipe of the water suction hopper is connected to the self-priming pump; The paddle wheel includes a baffle fixedly connected to the output shaft of the reducer, a cylinder fixedly connected to the baffle, a top plate fixedly connected to the cylinder, and a paddle arranged in a circular array fixedly connected to the outer circumference of the cylinder; an opening is provided in the middle of the top plate; a circle of triangular holes arranged in a circular array for water flow is provided in the middle of the baffle, and a circle of square holes arranged in a circular array for water flow is provided on the edge of the baffle.

2. A reservoir ecological restoration system according to claim 1, characterized in that: A photocatalytic coating layer is provided inside the water suction hopper, and an ultraviolet lamp is also provided inside the water suction hopper.

3. A reservoir ecological restoration system according to claim 2, characterized in that: The outer surface of the device body is also fixedly connected to a float, a ventilation valve is arranged on the top of the float, and a gas cylinder is also fixedly connected to one side of the float, and the gas cylinder is connected to the ventilation valve through an air pipe; the float is arranged near the paddle wheel; the outer surface of the device body is also provided with several pairs of support wheels, each pair of support wheels is rotatably connected to the seat plate, and the end of the seat plate away from the support wheel is hinged on the connecting seat, and several connecting seats are fixedly connected to the outer surface of the device body in a circular array, and a tension spring is provided between the two seat plates of each pair of support wheels, and the two ends of the tension spring are respectively fixedly connected to the middle part of the two seat plates.

4. A reservoir ecological restoration system according to claim 3, characterized in that: The bottom surface of the device body is fixedly connected to a wet motor, and the output shaft of the wet motor is fixedly connected to a propeller; the bottom surface of the device body is also provided with a metal waterproof cabin, in which a steering gear is arranged, and the output shaft of the steering gear is connected to the rudder blade through a rudder arm and a connecting rod; the rudder blade is arranged behind the propeller.

5. A reservoir ecological restoration system according to claim 4, characterized in that: The floating object interception device is arranged at the drawdown zone of the reservoir and / or the wastewater source discharge point; the floating object interception device is a floating net with a length of 1 to 2 km.

6. A reservoir ecological restoration system according to claim 5, characterized in that: The mesh size of the floating net is 10~150 mm; or the floating net is composed of a large-mesh main net and a small-mesh auxiliary net arranged at the front end of the large-mesh main net, the mesh size of the large-mesh main net is 50~150 mm, and the mesh size of the small-mesh auxiliary net is 10~50 mm.

7. A reservoir ecological restoration system according to claim 6, characterized in that: The mesh size of the floating net at the wastewater source discharge point is 10~50 mm; the mesh size of the floating net at the reservoir drawdown zone is 50~150 mm.

8. A reservoir ecological restoration system, characterized in that: The device consists of an ecological restoration device, a floating object interception device and a floating object collection robot for low tide set up in the drawdown zone of the reservoir.

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