A multi-stage ecological water purification device and method for rivers

Abstract

This invention belongs to the field of water treatment technology, specifically a multi-stage ecological water purification device and method for rivers. Addressing the issue that existing technologies often contain a certain amount of garbage in the water, which easily accumulates within the water intake structure during the water intake process, affecting water intake efficiency, and that the internal modules are inconvenient to maintain when applied to rivers, this invention proposes the following solution: Multiple installation slots are installed in the river channel, each slot housing a purification box. Each purification box contains an inlet chamber and a purification chamber. One side of the purification box has an inlet hole corresponding to the inlet chamber, and a drain hole is provided between the inlet chamber and the purification chamber. This invention combines physical filtration, aquatic plant purification, and water pump circulation systems to achieve comprehensive purification of the river water. Finally, the purified water is pumped back into the river, forming a closed-loop purification system that significantly improves water quality.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water quality treatment, and particularly relates to a river multi-stage water quality ecological purification device and method. BACKGROUND

[0002] Lakes, rivers and other landscape water bodies in cities are important components of urban living environments, but due to their characteristics of easy pollution, small water environmental capacity and poor water self-purification ability, they are easy to become the receiving body of domestic sewage, rainwater and garbage. This leads to a large amount of dissolved oxygen in the water body being consumed, and further causes the water body to be anoxic, presenting a black and smelly state, which causes a crisis in the entire ecological system.

[0003] The existing purification device (such as the water quality ecological purification device disclosed in the invention with the announcement number CN220684879U) has the following disadvantages in the use process: in the use process, the water often contains a certain amount of garbage, which is easy to accumulate in the water inlet structure during the water inlet process, affecting the water inlet efficiency; at the same time, when applied to the river, the maintenance of the internal module is relatively inconvenient. SUMMARY

[0004] The present application aims to solve the problems in the prior art that the water contains a certain amount of garbage in the use process, which is easy to accumulate in the water inlet structure during the water inlet process, affecting the water inlet efficiency, and the internal module is inconvenient to maintain when applied to the river, and proposes a river multi-stage water quality ecological purification device and method.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme:

[0006] A river multi-stage water quality ecological purification device, comprising a plurality of installation grooves opened on a river, a purification box is arranged in the installation groove, a water inlet cavity and a purification cavity are opened in the purification box, a water inlet hole corresponding to the water inlet cavity is opened on one side of the purification box, a drainage hole is opened between the water inlet cavity and the purification cavity for water to enter the purification cavity, a guide pipe is fixedly arranged in the purification cavity, a through hole is opened at the bottom end of the guide pipe, a planting disc is slidably sleeved on the outer wall of the guide pipe, a plurality of planting grooves for planting aquatic plants are opened on the planting disc, and the water in the purification cavity can be purified by using the aquatic plants;

[0007] A plurality of water pumps, the water pumps are arranged on the side of the river and correspond to the purification box, the water inlet end of the water pump is connected with the guide pipe through a water inlet pipe, the water outlet end of the water pump is fixedly connected with a drainage pipe, the other end of the drainage pipe is fixedly arranged in the river, and the drainage pipe is used for discharging the purified water in the purification cavity;

[0008] The blocking plate is arranged on one side of the purification tank and cooperates with the planting plate to automatically seal the water inlet hole when there is more water in the purification cavity and automatically open the water inlet hole when there is less water.

[0009] The guide mechanism is arranged on one side of the purification tank and is used for guiding the garbage in the river channel.

[0010] The filter mechanism is arranged on the water inlet cavity and is used for filtering the garbage in the water.

[0011] The guide mechanism includes a connecting seat fixed on one side of the purification tank, a guide plate rotatably arranged in the connecting seat, and a support arranged between the purification tank and the guide plate and used for supporting the guide plate, wherein the guide plate faces the water flow.

[0012] In a possible design, the support includes a second rotating seat fixed on one side of the purification tank, a sleeve rod rotatably arranged in the second rotating seat, a rotating rod slidably arranged in the sleeve rod, a spring arranged in the sleeve rod, and a first rotating seat rotatably arranged at one end of the rotating rod and fixed on one side of the guide plate and used for elastically supporting the guide plate.

[0013] In a possible design, the filter mechanism includes a sliding frame slidably arranged on the water inlet cavity, two filter plates arranged in the sliding frame, one of which is arranged above the water inlet cavity and used for filtering the garbage in the water, two mounting seats fixed on one side of the water inlet cavity, an electric push rod fixedly arranged between the two mounting seats, three baffle plates fixedly arranged on the top of the sliding frame, the filter plates being arranged between two adjacent baffle plates, the output end of the electric push rod being fixedly connected with the corresponding baffle plate and used for moving the two filter plates for replacement, and the side of each of the two baffle plates being provided with a rectangular opening corresponding to the mounting seat to avoid being stuck with the mounting seat during movement.

[0014] In a possible design, two collection cavities are arranged in the purification tank, the filter plates are rotatably arranged in the sliding frame, and the filter plates can be automatically turned over to pour the garbage into the corresponding collection cavity when being moved into the collection cavity.

[0015] In a possible design, one side of the collecting cavity is provided with a chute, a pulley is fixedly arranged in the chute, a sliding block is slidably arranged in the chute, a lifting plate is fixedly arranged on one side of the sliding block, two mounting holes are formed in the top of the lifting plate, a guide rod is slidably arranged in the mounting hole, the bottom end of the guide rod is fixedly connected with the bottom wall of the collecting cavity, a pull rope is fixedly arranged on the top of the sliding block, the other end of the pull rope is fixedly connected with the corresponding baffle through the pulley, and the garbage on the lifting plate is lifted when the baffle moves.

[0016] In a possible design, the top of the planting disc is fixedly provided with two extension frames, the inner side of each of the two extension frames is fixedly provided with a first limiting block and a second limiting block, and the blocking plate is located between the first limiting block and the second limiting block, so that the blocking plate can be lifted and moved by the first limiting block and the second limiting block during lifting of the planting disc.

[0017] In a possible design, one side of the purification box is fixedly provided with a fixed plate, the top of the fixed plate is fixedly provided with two fixed rods, the blocking plate is slidably arranged on the two fixed rods, a spring is arranged on the outer wall of the fixed rod, and the two ends of the spring are fixedly connected with the blocking plate and the side of the fixed plate that is close to each other, and the blocking plate cannot completely seal the water inlet hole after the spring is reset.

[0018] In a possible design, the limiting frame for limiting the planting disc is fixedly arranged in the purification cavity.

[0019] A use method of a riverway multistage water quality ecological purification device, comprising the following steps:

[0020] S1, first, the device is installed in the installation slot on the riverway, and the end of the drainage pipe away from the water pump is fixed in the riverway;

[0021] S2, in the process of water flow, the water flows into the water inlet cavity through the water inlet hole and the filter plate, and the garbage falls on the filter plate through the guide plate and the water inlet hole in the process of water flow;

[0022] S3, the filtered water in the water inlet cavity flows into the purification cavity through the drainage hole, and the planting disc is driven to move upward by the buoyancy of the planting disc, the planting disc drives the blocking plate to seal the water inlet hole after being moved upward to the position, water inflow is stopped, and purification is performed by the water plants planted in the planting groove;

[0023] S4, after the purification is completed, the water pump is started to pump the water in the purification cavity into the riverway, and the water is recycled and purified;

[0024] S5, and the planting disc can move downward under the gravity and drive the blocking plate to move downward in the process of extracting the water in the purification cavity, and the water inlet action is continuously performed.

[0025] Advantages:

[0026] In the application, the river multi-stage water quality ecological purification device combines physical filtration, water plant purification and water pump circulation three systems to comprehensively purify the water quality of the river, the filter mechanism in the water inlet cavity effectively removes the garbage and impurities in the water, the water plants planted in the purification cavity further purify the water quality in a natural ecological way, and finally the purified water is discharged back to the river through the water pump, forming a closed circulation purification system and significantly improving the water quality.

[0027] In the application, the river multi-stage water quality ecological purification device effectively guides the garbage and floating objects in the river to the vicinity of the purification device through the rotatable guide plate, and the garbage is driven by the water flow to flow into the purification box, and meanwhile, the filter mechanism on the water inlet cavity further intercepts the garbage entering the purification cavity, protecting the growth environment of the water plants and prolonging the service life of the device.

[0028] In the application, the river multi-stage water quality ecological purification device realizes the filtration of the garbage in the water entering the purification device by setting a slidable sliding frame on the water inlet cavity and embedding two filter plates, effectively improves the water quality purification effect, realizes the automatic replacement function of the filter plates by the connection design of the electric push rod and the baffle, can quickly switch the filter plates without manual intervention, greatly improves the filtration efficiency and the automation level of the device, and after the filter plates are replaced, the collected garbage can be automatically guided out and the garbage on the other side can be put out, making it convenient to clean.

[0029] In the application, the river multi-stage water quality ecological purification device realizes the automatic lifting movement of the blocking plate by the planting disc during the lifting process by setting an extension frame, a first limiting block and a second limiting block on the top of the planting disc, improves the automation degree of the device, automatically adjusts the opening and closing of the water inlet hole according to the water level change without an additional power source, and effectively reduces the operation cost and energy consumption. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a three-dimensional structure schematic diagram of the river multi-stage water quality ecological purification device proposed in the application;

[0031] Figure 2 It is a purification box structure schematic diagram of the river multi-stage water quality ecological purification device proposed in the application;

[0032] Figure 3 It is a purification box cross-sectional structure schematic diagram of the river multi-stage water quality ecological purification device proposed in the application;

[0033] Figure 4 This is a schematic diagram of the connection structure between the filter plate and the sliding frame of a multi-stage ecological water purification device for rivers proposed in this invention.

[0034] Figure 5 This is a schematic diagram of the lifting plate installation structure of a multi-stage ecological water purification device for rivers proposed in this invention.

[0035] Figure 6 for Figure 2 Another perspective of the cross-sectional structural diagram;

[0036] Figure 7 This is a schematic diagram of the sealing plate installation structure of a multi-stage ecological water purification device for rivers proposed in this invention.

[0037] In the diagram: 1. River channel; 2. Mounting trough; 3. Purification box; 4. Water pump; 5. Drainage pipe; 6. Planting tray; 7. Guide pipe; 8. Inlet pipe; 9. Extension frame; 10. Guide plate; 11. Inlet chamber; 12. Collection chamber; 13. Guide rod; 14. Lifting plate; 15. Drainage hole; 16. Sliding frame; 17. Filter plate; 18. Mounting base; 19. Electric push rod; 20. Baffle; 21. Rectangular opening; 22. Slide groove; 23. 24. Clearance hole; 25. Mounting hole; 26. Sliding block; 27. Pulley; 28. Pull rope; 29. ​​Through hole; 30. Planting trough; 31. Limiting frame; 32. Purification chamber; 33. Fixing plate; 34. Fixing rod; 35. Spring; 36. Sealing plate; 37. First limiting block; 38. Second limiting block; 39. Connecting seat; 40. First rotating seat; 41. Rotating rod; 42. Sleeve rod; 43. Second rotating seat; 44. Water inlet hole. Detailed Implementation

[0038] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0039] Example 1

[0040] Reference Figures 1-7 A purification device includes: multiple mounting slots 2 opened at appropriate locations in a river channel 1. The depth and width of these mounting slots 2 are designed according to the dimensions of a purification box 3 to ensure that the purification box 3 can be securely installed inside. The purification box 3 is made of corrosion-resistant material and its interior is divided into two parts: an inlet chamber 11 and a purification chamber 31. The inlet chamber 11 is directly connected to the river channel 1 and receives water from the river channel through an inlet hole 43. The width of the river channel 1 in the attached drawing is only schematic and not the actual width.

[0041] Inside the purification chamber 31, a guide tube 7 is fixedly installed, with a through hole 28 at its bottom end. A planting tray 6 is slidably fitted onto the outer wall of the guide tube 7, and multiple planting troughs 29 are provided on the planting tray 6 for planting aquatic plants such as reeds and water celery. These aquatic plants absorb nutrients and heavy metals from the water through their roots, while releasing oxygen and promoting the activity of aerobic microorganisms in the water, thereby effectively purifying the water quality.

[0042] Multiple water pumps 4 are installed along the river channel 1, each corresponding to a purification tank 3. The inlet of each water pump 4 is connected to the top of a guide pipe 7 via an inlet pipe 8, used to extract the pre-purified water from the upper layer of the purification chamber 31. The outlet of each water pump 4 is fixedly connected to a drain pipe 5, the other end of which is fixed inside the river channel 1, forming a circulating water flow that returns the purified water to the river channel, achieving continuous improvement in water quality.

[0043] On one side of the purification chamber 3, a sealing plate 35 is slidably installed. This sealing plate 35 works in conjunction with the planting tray 6. When the water level in the purification chamber 31 rises to a certain height, the planting tray 6 floats up, pushing the sealing plate 35 to slide and seal the water inlet 43, preventing more water from entering the purification chamber 31. When the water level in the purification chamber 31 drops, the planting tray 6 drops down, and the sealing plate 35 automatically opens the water inlet 43 under gravity, allowing new water to enter.

[0044] A guiding mechanism is installed on one side of the purification tank 3 to guide garbage from the river into the purification tank 3. The guiding mechanism includes a connecting seat 38 fixedly installed on one side of the purification tank 3, and a guide plate 10 is rotatably installed inside the connecting seat 38. The guide plate 10 is elastically supported by support members including a second rotating seat 42, a sleeve rod 41, a rotating rod 40, a first rotating seat 39, and a spring, and its orientation is opposite to the water flow direction. When the water flow carries garbage through, the guide plate 10 will guide the garbage into the purification tank 3, achieving preliminary purification treatment of the river.

[0045] A filtration mechanism, such as a filter screen or bar, is installed on the inlet chamber 11 to intercept and remove large particles of debris and suspended solids from the water. These filtration mechanisms can effectively reduce the pollutant load entering the purification chamber 31, improving the treatment efficiency and stability of the entire purification system.

[0046] The filtration mechanism mainly includes a sliding frame 16 and two filter plates 17. The sliding frame 16 is designed to slide along a specific track in the inlet chamber 11 for replacement or maintenance operations. The two filter plates 17 are located inside the sliding frame 16, with one filter plate 17 positioned directly above the inlet chamber 11 to intercept and filter debris and suspended solids in the incoming water.

[0047] To enable automatic replacement of the filter plate 17, two mounting bases 18 are fixedly installed on one side of the water inlet chamber 11, with an electric push rod 19 fixedly connected between them. Three baffles 20 are fixedly installed on the top of the sliding frame 16, and the filter plate 17 is located between two adjacent baffles 20. The output end of the electric push rod 19 is fixedly connected to one of the baffles 20. Through the extension and retraction of the electric push rod 19, the entire sliding frame 16 and the internal filter plate 17 can be moved horizontally, thereby enabling the replacement of the filter plate 17.

[0048] To prevent the sliding frame 16 from jamming with the mounting base 18 during movement, rectangular openings 21 corresponding to the mounting base 18 are provided on the two baffles 20 located on the side of the electric push rod 19, so that the movement can remain smooth and unobstructed.

[0049] To further improve the automation level and waste treatment efficiency of the device, two collection chambers 12 are designed inside the purification box 3, located on both sides of the water inlet chamber 11. The filter plate 17 is designed to be rotatable. When the sliding frame 16 moves the filter plate 17 above the collection chamber 12, the filter plate 17 will automatically flip over, pouring the waste trapped on it into the corresponding collection chamber 12, thus realizing automatic collection and sorting of waste.

[0050] To facilitate efficient waste collection and disposal, a chute 22 is provided on one side of the collection chamber 12, and a pulley 26 is installed inside the chute 22. A sliding block 25 is slidably disposed within the chute 22, and a lifting plate 14 is fixedly connected to one side of the sliding block 25. Two mounting holes 24 are provided on the top of the lifting plate 14, and guide rods 13 are slidably disposed within these holes 24. The bottom ends of the guide rods 13 are fixedly connected to the bottom wall of the collection chamber 12.

[0051] In addition, a pull rope 27 is fixedly connected to the top of the sliding block 25. The other end of the pull rope 27 passes around the pulley 26 and is fixedly connected to the corresponding baffle 20 on the sliding frame 16. When the electric push rod 19 moves the baffle 20 and the sliding frame 16, the pull rope 27 on the other side will be pulled, thereby driving the sliding block 25 and the lifting plate 14 to rise along the guide rod 13. In this way, while the filter plate 17 flips to pour the garbage into the collection chamber 12, the lifting plate 14 on the other side will also push the garbage at the bottom of the collection chamber 12 upward, which is convenient for subsequent cleaning and discharge.

[0052] Meanwhile, in order to ensure that the filter plate 17 does not collide with the guide rod 13 during the flipping and moving process, the top of the filter plate 17 is also provided with clearance holes 23 corresponding to the two guide rods 13, so as to ensure the smooth operation of the whole process.

[0053] This application can be used in the field of water treatment, or in other fields applicable to this application.

[0054] Example 2

[0055] refer to Figures 1-7 Based on Embodiment 1, an improvement is made to a multi-stage ecological water purification device for rivers, applied in the field of water treatment. To enable the planting tray 6 to automatically move the sealing plate 35 during lifting and lowering, two extension frames 9 are fixedly installed on the top of the planting tray 6. These two extension frames 9 are located on both sides of the planting tray 6, and a first limiting block 36 and a second limiting block 37 are fixedly installed on their inner sides. The first limiting block 36 and the second limiting block 37 are spaced apart in the vertical direction to accommodate and guide the sliding of the sealing plate 35.

[0056] At the corresponding position in the purification chamber 3, the sealing plate 35 is designed to be located between the first limiting block 36 and the second limiting block 37. When the planting tray 6 rises and falls with the water level, the first limiting block 36 and the second limiting block 37 on the extension frame 9 will move up and down accordingly, and through the force of resistance against the sealing plate 35, drive the sealing plate 35 to move up and down accordingly. Thus, when the water level in the purification chamber 31 rises, the planting tray 6 rises, driving the sealing plate 35 to move upward and gradually close the water inlet 43; conversely, when the water level falls, the planting tray 6 falls, driving the sealing plate 35 to move downward and open the water inlet 43.

[0057] To ensure that the sealing plate 35 can remain stably in a certain position after the driving force of the planting tray 6 is lost, and can automatically reset when needed, in this embodiment, a fixing plate 32 is fixedly provided on one side of the purification box 3. Two fixing rods 33 are fixedly provided on the top of the fixing plate 32, and the sealing plate 35 is designed to slide on these two fixing rods 33 to achieve stable sliding guidance.

[0058] A spring 34 is fitted on the outer wall of the fixing rod 33, and the two ends of the spring 34 are fixedly connected to the adjacent sides of the sealing plate 35 and the fixing plate 32, respectively. In this way, when the sealing plate 35 is moved by an external force such as the planting tray 6, it will compress the spring 34; when the external force disappears, the elastic force of the spring 34 will cause the sealing plate 35 to automatically return to the initial position.

[0059] In particular, in order to achieve a partial seal, the restoring force of the spring 34 is designed to maintain a certain gap with the water inlet 43 after the sealing plate 35 is reset, thereby allowing a small amount of water to pass through, so as to maintain the water flow and ecological balance in the purification chamber 31.

[0060] In order to ensure the stable movement of the planting tray 6 within the purification chamber 31 and to prevent it from shaking excessively or falling out of the preset position due to water flow fluctuations, in this embodiment, a limiting frame 30 for limiting the planting tray 6 is fixedly provided within the purification chamber 31.

[0061] The shape and size of the limiting frame 30 are matched with the planting tray 6 to further limit the lifting stroke of the planting tray 6 and prevent it from exceeding the preset range.

[0062] A method for using a multi-stage ecological water purification device for rivers includes the following steps:

[0063] S1. First, install the device in the mounting groove 2 on the river channel 1, and fix the end of the drain pipe 5 away from the water pump 4 in the river channel 1.

[0064] S2. During the flow of water, it will flow into the water inlet chamber 11 through the water inlet hole 43 and the filter plate 17. During the flow, the garbage will fall onto the filter plate 17 through the guide plate 10 and the water inlet hole 43.

[0065] S3. The filtered water in the water inlet chamber 11 flows into the purification chamber 31 through the drain hole 15. The buoyancy of the planting tray 6 can drive the planting tray 6 to move upward. After the planting tray 6 moves upward into place, it can drive the sealing plate 35 to seal the water inlet hole 43, stop the water inlet, and purify the water through the aquatic plants planted in the planting trough 29.

[0066] S4. After purification is completed, start water pump 4 to pump the water in purification chamber 31 into river channel 1 for circulation purification treatment.

[0067] S5. During the process of water being extracted from the purification chamber 31, the planting tray 6 can move downward under gravity and drive the sealing plate 35 to move downward, continuing the water intake action.

[0068] In this application, firstly, the device is installed in the mounting groove 2 on the river channel 1, and the end of the drain pipe 5 away from the water pump 4 is fixed in the river channel 1;

[0069] During the flow of water, it will flow into the water inlet chamber 11 through the water inlet hole 43 and the filter plate 17. During the flow, the garbage will move into the water inlet hole 43 through the guide plate 10 and fall onto the filter plate 17 for collection.

[0070] The filtered water in the water inlet chamber 11 flows into the purification chamber 31 through the drain hole 15. The buoyancy of the planting tray 6 can drive the planting tray 6 to move upward. During the upward movement of the planting tray 6, the extension frame 9 can move upward. The upward movement of the extension frame 9 can drive the sealing plate 35 to move upward through the second limiting block 37 below. The upward movement of the sealing plate 35 can seal the water inlet hole 43, stop the water from entering, and purify the water through the aquatic plants planted in the planting trough 29.

[0071] After purification is completed, water pump 4 is started to pump the water in purification chamber 31 into river channel 1 for circulation purification treatment.

[0072] During the process of water being extracted from the purification chamber 31, the planting tray 6 can move downward under gravity. The downward movement of the planting tray 6 can drive the extension frame 9 to move downward. The downward movement of the extension frame 9 can drive the first limiting block 36 to move downward, which can drive the sealing plate 35 to move downward, so that the sealing plate 35 moves below the water inlet hole 43. At this time, water can continue to enter the water inlet chamber 11.

[0073] When there is a lot of garbage on the filter plate 17, the electric push rod 19 is extended. The extension of the electric push rod 19 can move the sliding frame 16. The movement of the sliding frame 16 can drive the filter plate 17 to move to the left. When the left filter plate 17 is not in contact with the water inlet chamber 11, it will rotate downward under the action of gravity and dump the garbage into the left collection chamber 12. Meanwhile, the right filter plate 17 moves to the left onto the water inlet chamber 11. During the movement, the water inlet chamber 11 will drive the filter plate 17 to flip upward. At this time, the filter plate 17 is parallel to the sliding frame 16. When the sliding frame 16 moves to the left, it will drive the right pull rope 27 to move. The movement of the pull rope 27 can drive the sliding block 25 to move upward. The upward movement of the sliding block 25 can drive the right lifting plate 14 to move upward, which can lift the garbage on the right lifting plate 14. Meanwhile, the left lifting plate 14 can move downward under the action of gravity and tighten the left pull rope 27. The garbage on the left and right lifting plates 14 will be lifted in turn. The lifted garbage can be cleaned manually.

[0074] However, as is well known to those skilled in the art, the working principles and wiring methods of the water pump 4 and the electric push rod 19 are commonplace and are all conventional means or common knowledge. They will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0075] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A multi-stage water quality ecological purification device for river channels, characterized in that, Including the installation groove (2) on the river (1) multiple, the installation groove (2) is equipped with the purification box (3) in, the purification box (3) is equipped with the water inlet cavity (11) and the purification cavity (31) in, the purification box (3) one side is equipped with the water inlet hole (43) corresponding with water inlet cavity (11), water inlet cavity (11) and the water outlet hole (15) between the purification cavity (31) are equipped with, for water enters the purification cavity (31) in, the purification cavity (31) is fixedly provided with the guide pipe (7), the bottom end of the guide pipe (7) is equipped with the through -hole (28), the outer wall of the guide pipe (7) is slidably sleeved with the planting disc (6), the planting disc (6) is equipped with multiple planting grooves (29) for planting aquatic plants on, can utilize the water purification in the purification cavity (31) of aquatic plants; Multiple water pumps (4), multiple water pumps (4) are all set up on the river (1) side, and are corresponding with the purification box (3), the water inlet end of water pump (4) is communicated with the guide pipe (7) through the water inlet pipe (8), the water outlet end of water pump (4) is fixedly connected with the drain pipe (5), the other end of drain pipe (5) is fixed in the river (1), for the water after purification in the purification cavity (31) is discharged; The blanking plate (35) is slidably arranged on one side of the purification box (3), and is used in cooperation with the planting disc (6). When the water in the purification cavity (31) is more, the water inlet hole (43) is automatically sealed, and vice versa, the water inlet hole (43) is automatically opened. The guide mechanism is arranged on one side of the purification box (3) and is used for guiding the garbage in the river (1). The guide mechanism includes a connecting seat (38) fixedly arranged on one side of the purification box (3), a guide plate (10) rotatably arranged in the connecting seat (38), and a support member arranged between the purification box (3) and the guide plate (10) and used for supporting the guide plate (10). The direction of the guide plate (10) is opposite to the water flow. By the rotatable guide plate (10), the garbage and floating objects in the river (1) are guided to the vicinity of the purification device, and the garbage is driven by the water flow to flow into the purification box. The top of the planting disc (6) is fixedly provided with two extension frames (9), and the inner sides of the two extension frames (9) are fixedly provided with a first limiting block (36) and a second limiting block (37). The blanking plate (35) is located between the first limiting block (36) and the second limiting block (37), and the blanking plate (35) can be driven to move up and down by the first limiting block (36) and the second limiting block (37) during the lifting of the planting disc (6). The filtering mechanism is arranged on the water inlet cavity (11) and is used for filtering the garbage in the water.

2. The river multi-stage water quality ecological purification device according to claim 1, characterized in that, The support piece comprises a second rotating base (42) fixed on one side of the purification box (3), a sleeve rod (41) rotatably arranged in the second rotating base (42), a rotating rod (40) slidably arranged in the sleeve rod (41), a spring arranged in the sleeve rod (41), and two ends of the spring fixedly connected with an inner wall of one side of the sleeve rod (41) and one end of the rotating rod (40) respectively, and the other end of the rotating rod (40) rotatably arranged with a first rotating base (39) fixed on one side of the guide plate (10) for elastically supporting the guide plate (10).

3. The river multi-stage water quality ecological purification device according to claim 1, characterized in that, The filtering mechanism comprises a sliding frame (16) slidably arranged on the water inlet cavity (11), two filtering plates (17) arranged in the sliding frame (16), one of which is located above the water inlet cavity (11) for filtering garbage in water, two mounting seats (18) fixed on one side of the water inlet cavity (11), an electric push rod (19) fixedly arranged between the two mounting seats (18), three baffle plates (20) fixedly arranged on the top of the sliding frame (16), the filtering plate (17) located between two adjacent baffle plates (20), the output end of the electric push rod (19) fixedly connected with the corresponding baffle plate (20) for driving the two filtering plates (17) to move and replace each other, and a rectangular opening (21) corresponding to the mounting seat (18) formed on one side of the two baffle plates (20) to avoid being stuck with the mounting seat (18) during movement.

4. The river multi-stage water quality ecological purification device according to claim 3, characterized in that, The purification box (3) is provided with two collecting cavities (12) formed therein, the collecting cavities (12) are located on both sides of the water inlet cavity (11), and the filtering plate (17) is rotatably arranged in the sliding frame (16) and can be automatically turned over to pour garbage into the corresponding collecting cavity (12) when being moved into the collecting cavity (12).

5. The river multi-stage water quality ecological purification device according to claim 4, characterized in that, A chute (22) is formed on one side of the collecting cavity (12), a pulley (26) is fixedly arranged in the chute (22), a sliding block (25) is slidably arranged in the chute (22), a lifting plate (14) is fixedly arranged on one side of the sliding block (25), two mounting holes (24) are formed in the top of the lifting plate (14), a guide rod (13) is slidably arranged in the mounting hole (24), the bottom end of the guide rod (13) is fixedly connected with the bottom wall of the collecting cavity (12), a pull rope (27) is fixedly arranged on the top of the sliding block (25), the other end of the pull rope (27) is fixedly connected with the corresponding baffle plate (20) by passing around the pulley (26), garbage on the lifting plate (14) is lifted when the baffle plate (20) is moved, and a clearance hole (23) corresponding to the two guide rods (13) is formed in the top of the filtering plate (17) to avoid the filtering plate (17) from being in contact with the guide rod (13).

6. The river multi-stage water quality ecological purification device according to claim 1, characterized in that, One side of the purification tank (3) is fixedly provided with a fixed plate (32), the top of the fixed plate (32) is fixedly provided with two fixed rods (33), the blocking plate (35) is slidably sleeved on the two fixed rods (33), the outer wall of the fixed rod (33) is sleeved with a spring (34), the two ends of the spring (34) are fixedly connected with the blocking plate (35) and the side of the fixed plate (32) which is close to each other, and the blocking plate (35) cannot completely seal the water inlet hole (43) after the spring (34) is reset.

7. The river multi-stage water quality ecological purification device according to claim 1, characterized in that, The purification cavity (31) is fixedly provided with a limiting frame (30) for limiting the planting disc (6).

8. The use of a multi-stage water quality ecological purification device for river course according to any one of claims 1-7, characterized in that, The method comprises the following steps: S1, first, install the device in the installation slot (2) on the river (1), and fix the end of the drainage pipe (5) away from the water pump (4) in the river (1); S2, the flowing water flows into the water inlet cavity (11) through the water inlet hole (43) and the filter plate (17) in the process of flowing, and the garbage falls on the filter plate (17) through the guide plate (10) and the water inlet hole (43) in the process of flowing; S3, the filtered water in the water inlet cavity (11) flows into the purification cavity (31) through the drainage hole (15), and can drive the planting disc (6) to move upward by the buoyancy of the planting disc (6), the planting disc (6) can seal the water inlet hole (43) after moving upward to the position, stop water inlet, and purify through the water plants planted in the planting groove (29); S4, after purification, start the water pump (4) to pump the water in the purification cavity (31) into the river (1) for circulating purification treatment; S5, in the process of pumping water in the purification cavity (31), the planting disc (6) can move downward under the gravity and drive the blocking plate (35) to move downward, and continue to water.

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