Sewage treatment type catch basin structure based on prefabricated walling crib and construction method

Abstract

The invention relates to the field of sewage treatment, and provides a sewage treatment type catch basin structure based on a prefabricated walling crib and a construction method.The sewage treatment type catch basin structure comprises a shaft, the prefabricated walling crib and a well lid, the prefabricated walling crib is fixedly connected to the shaft, the well lid is placed on the prefabricated walling crib, a top base is fixedly connected to the top wall of the well lid, a base cavity is formed in the top base, and an air cylinder and a first rack are fixedly connected to the inner wall of the base cavity; a push block is fixedly connected to a piston rod of the air cylinder, a block cavity is formed in the push block, a lifting piece is slidably connected to the block cavity, an impurity removal piece and a second rack are fixedly connected to the lifting piece, a first gear is rotationally connected to the inner wall of the block cavity, and the second rack is meshed with the first gear. A plate mounting hole is formed in the well lid, and a filter plate is rotationally connected to the inner wall of the plate mounting hole through a self-reset rotating shaft. The filter plate is provided with a filter water hole and a lock groove, the well lid is connected with a limiting assembly, and the inner wall of the shaft is detachably connected with an oil separation net. By arranging the filter plate and the oil separation net, impurities and grease pollutants entrained in rainwater can be effectively filtered.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and in particular to a sewage treatment type rainwater well structure based on a prefabricated well ring and a construction method. Background Art

[0002] A stormwater well is an underground structure located in areas such as urban roads and plazas. Its primary function is to collect and drain surface rainwater, preventing water accumulation from impacting traffic and the environment. Traditional stormwater wells typically consist of a shaft, a ring, and a cover. The bottom of the well is connected to the city's drainage network, channeling surface water into the system through gravity.

[0003] However, in practice, surface rainwater often carries a large amount of debris, such as fallen leaves, silt, and plastic waste. Once these debris enter the stormwater well, they tend to settle at the bottom of the well or clog the drainage pipes, leading to poor drainage, backflow, or water accumulation, seriously affecting the normal operation of the drainage system and the efficiency of urban flood control. Summary of the Invention

[0004] In response to the above technical problems, the present invention aims to provide a sewage treatment type rainwater well structure and construction method based on a prefabricated well ring. To solve the above technical problems, the present invention adopts the following technical solutions: A sewage treatment type rainwater well structure based on a prefabricated well ring, comprising a wellbore, a prefabricated well ring and a well cover. The prefabricated well ring is fixedly connected to the wellbore, and the well cover is placed on the prefabricated well ring. The top wall of the well cover is fixedly connected to a top seat, and a seat cavity is opened on the top seat. The inner wall of the seat cavity is fixedly connected to a cylinder and a rack 1. The piston rod of the cylinder is fixedly connected to a push block, and a block cavity is opened on the push block. A lifting piece is slidably connected to the block cavity, and a debris removal piece and a rack 2 are fixed to the lifting piece. The inner wall of the block cavity is rotatably connected to gear 1, and the rack 2 is meshed with the gear 1. A mounting hole is opened on the well cover, and the inner wall of the mounting hole is rotatably connected to a filter plate through a self-resetting rotating shaft. The filter plate is provided with a filter water hole and a lock groove. A limiting component is connected to the well cover, and the limiting component extends into the lock groove to limit the filter plate. The inner wall of the wellbore is detachably connected to an oil separator.

[0005] Preferably, a transmission groove is provided on the manhole cover, and the limiting assembly includes an extension piece, a limiting rod and a spring. The limiting rod is slidably connected to the inner wall of the transmission groove, the extension piece and the limiting rod are fixed, the extension piece extends into the seat cavity, the extension piece is connected to the inner wall of the transmission groove through the spring, and the limiting rod extends into the lock groove to limit the filter plate.

[0006] Preferably, a fragrance releasing component is connected to the manhole cover.

[0007] Preferably, the fragrance release component includes a connecting frame and a mesh box, the connecting frame is fixed to the manhole cover, the mesh box is detachably connected to the connecting frame, a box cavity is opened on the mesh box, the box cavity is connected to the outer wall of the mesh box through the sheet inlet hole, and scented sheets are placed on the inner wall of the box cavity.

[0008] Preferably, the inner wall of the transmission groove is rotatably connected to gear 2, gear 2 extends into the seat cavity, the inner wall of the transmission groove is slidably connected to rack 4 and a connecting rod, rack 4 and the connecting rod are fixedly connected, rack 4 and gear 2 are meshed, the lower end of the connecting rod extends to the bottom of the manhole cover, the lower end of the connecting rod is fixedly connected to a transmission plate, the manhole cover is detachably connected to a storage box, the storage box is provided with a storage cavity and a transmission channel that are interconnected, the transmission channel connects the two opposite outer walls of the storage box, the transmission plate is slidably connected to the inner wall of the transmission channel, more than two spare scented sheets are stacked in the storage cavity, and the outer wall of the storage box is rotatably connected to a baffle.

[0009] Preferably, there are two or more filter water holes, and two or more impurity removal sheets.

[0010] Preferably, the bottom wall of the film feeding hole is inclined.

[0011] Preferably, the top seat is provided with a first inclined surface, and the push block is provided with a second inclined surface.

[0012] Preferably, the top wall of the cage is convex from the periphery to the middle.

[0013] A method for constructing a sewage treatment type rainwater well structure based on a prefabricated well ring is used for constructing the rainwater well structure, comprising the following steps: excavating a well foundation pit, ensuring that the bottom of the foundation pit is flat and stable, placing the well shaft vertically at the bottom of the foundation pit and performing position correction, pouring concrete on the outer wall of the well shaft, fixing the prefabricated well ring on the well shaft, and placing the well cover on the prefabricated well ring.

[0014] The present invention has the following beneficial effects: By setting up filter plates, filter holes and limit components, the initial interception of larger debris in rainwater is achieved, preventing it from directly entering the wellbore, improving the efficiency of primary filtration of rainwater and effectively reducing the risk of drainage system blockage; The debris removal piece is used in conjunction with the lifting piece. Driven by the cooperation of gear 1, rack 1 and rack 2, the debris inside and outside the filter water hole can be mechanically cleaned regularly to ensure the smooth flow of drainage channels, reduce the frequency of manual dredging and improve maintenance convenience. The oil separator installed in the wellbore can effectively separate the oil and grease pollutants carried in the rainwater, preventing the oil impurities from depositing at the bottom of the well or entering the pipeline system, improving the drainage water quality and extending the service life of downstream treatment facilities. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention is further described with reference to the accompanying drawings. However, the embodiments in the accompanying drawings do not constitute any limitation to the present invention. A person skilled in the art can obtain other drawings based on the following drawings without creative effort.

[0016] Figure 1 This is a schematic structural diagram of a sewage treatment rainwater well structure based on a prefabricated well ring according to the present invention; Figure 2 This invention Figure 1 Enlarged view of point A in the middle; Figure 3 This invention Figure 2 Schematic diagram of the structure of the middle filter plate; Figure 4 This invention Figure 2 Schematic diagram of the structure of the storage box; Figure 5 This invention Figure 1 Schematic diagram of the structure of the middle lifting piece and the debris removal piece; Figure 6 This invention Figure 1 Schematic diagram of the structure of the middle top seat and filter plate.

[0017] 1. Shaft; 2. Prefabricated well ring; 3. Manhole cover; 4. Top seat; 5. Oil separator; 6. Rack 1; 7. Cylinder; 8. Seat cavity; 9. Push block; 10. Block cavity; 11. Lifting plate; 12. Debris removal plate; 13. Rack 2; 14. Gear 1; 15. Self-resetting shaft; 16. Filter plate; 17. Filter water hole; 18. Plate mounting hole; 19. Locking slot; 20. Transmission slot; 21. Extension plate; 22. Limiting rod; 23. Spring; 24. Rack 3; 25. Gear 2; 26. Rack 4; 27. Connecting rod; 28. Conveying plate; 29. ​​Storage box; 30. Conveying channel; 31. Storage cavity; 32. Block plate; 33. Net box; 34. Sheet feeding hole; 35. Box cavity; 36. Connecting frame; 37. Scented sheet. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be noted that the terms "vertical," "upper," "lower," and "horizontal," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] It should also be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0021] like Figure 1-Figure 3 、 Figure 5-Figure 6 As shown, a sewage treatment type rainwater well structure based on a prefabricated well ring includes a well shaft 1, a prefabricated well ring 2 and a well cover 3. The prefabricated well ring 2 is fixed to the well shaft 1, and the well cover 3 is placed on the prefabricated well ring 2. The top wall of the well cover 3 is fixed with a top seat 4, and a seat cavity 8 is opened on the top seat 4. The inner wall of the seat cavity 8 is fixed with a cylinder 7 and a rack 6. A push block 9 is fixed to the piston rod of the cylinder 7, and a block cavity 10 is opened on the push block 9. A lifting piece 11 is slidably connected to the block cavity 10, and a lifting piece 11 is fixed to the lifting piece 11. There are debris removal pieces 12 and rack 2 13, the inner wall of the block cavity 10 is rotatably connected to gear 14, rack 2 13 and gear 1 14 are meshed, a mounting hole 18 is provided on the manhole cover 3, the inner wall of the mounting hole 18 is rotatably connected to a filter plate 16 through a self-resetting rotating shaft 15, the filter plate 16 is provided with a filter water hole 17 and a lock groove 19, a limiting component is connected to the manhole cover 3, the limiting component extends into the lock groove 19 to limit the filter plate 16, and the inner wall of the wellbore 1 is detachably connected to the oil separator 5.

[0022] The cylinder 7 can be a waterproof cylinder, the self-resetting function of the self-resetting shaft 15 can be achieved by an elastic member, and the filter plate 16 and the oil separator 5 can filter large impurities and grease.

[0023] like Figure 1-Figure 3 、 Figure 5As shown, according to an optional embodiment of the present invention, a transmission groove 20 is provided on the manhole cover 3, and the limiting assembly includes an extension piece 21, a limiting rod 22 and a spring 23. The limiting rod 22 is slidably connected to the inner wall of the transmission groove 20, and the extension piece 21 and the limiting rod 22 are fixedly connected. The extension piece 21 extends into the seat cavity 8, and the extension piece 21 is connected to the inner wall of the transmission groove 20 through the spring 23. The limiting rod 22 extends into the lock groove 19 to limit the filter plate 16.

[0024] The limiting rod 22 can prevent the filter plate 16 from moving, and the filter plate 16 can be rotated after the limiting rod 22 moves.

[0025] like Figure 1-Figure 2 、 Figure 4 As shown, according to an optional embodiment of the present invention, a fragrance releasing component is connected to the manhole cover 3, and the fragrance releasing component is used to cover up the odor.

[0026] like Figure 1-Figure 2 、 Figure 4 As shown, according to an optional embodiment of the present invention, the fragrance release assembly includes a connecting frame 36 and a net box 33. The connecting frame 36 is fixed to the manhole cover 3, and the net box 33 is detachably connected to the connecting frame 36. The net box 33 defines a box cavity 35, which is connected to the outer wall of the net box 33 through a sheet inlet hole 34. A scent sheet 37 is placed on the inner wall of the box cavity 35. The scent sheet 37 can be an activated carbon scent sheet. Activated carbon scent sheets made from a mixture of activated carbon and fragrance can not only absorb odors but also emit fragrance. Of course, the scent sheet 37 can be made of other materials.

[0027] like Figure 1-Figure 2 、 Figure 4 As shown, according to an optional embodiment of the present invention, the inner wall of the transmission groove 20 is rotatably connected to a gear 25, and the gear 25 extends into the seat cavity 8. The inner wall of the transmission groove 20 is slidably connected to a rack 4 26 and a connecting rod 27. The rack 4 26 and the connecting rod 27 are fixedly connected, and the rack 4 26 and the gear 2 25 are meshed. The lower end of the connecting rod 27 extends to the bottom of the manhole cover 3, and the lower end of the connecting rod 27 is fixedly connected to a transmission plate 28. A storage box 29 is detachably connected to the manhole cover 3, and the storage box 29 is provided with a storage cavity 31 and a transmission channel 30 that are interconnected. The transmission channel 30 connects the two opposite outer walls of the storage box 29, and the transmission plate 28 is slidably connected to the inner wall of the transmission channel 30. More than two spare scented sheets 37 are stacked in the storage cavity 31, and a baffle 32 is rotatably connected to the outer wall of the storage box 29.

[0028] like Figure 3 As shown, according to an optional embodiment of the present invention, two or more filter water holes 17 are provided to improve drainage efficiency, and two or more debris removal pieces 12 are provided.

[0029] like Figure 2 As shown, according to an optional embodiment of the present invention, the bottom wall of the sheet feeding hole 34 is inclined to facilitate the scented sheets 37 to slide into the box cavity 35.

[0030] like Figure 2 As shown, according to an optional embodiment of the present invention, the top seat 4 is provided with a first inclined surface, and the push block 9 is provided with a second inclined surface to facilitate the passage of vehicles and reduce damage to the wheels caused by the top seat 4.

[0031] like Figure 2 As shown, according to an optional embodiment of the present invention, the top wall of the mesh box 33 is convex from the periphery to the middle to facilitate the falling of impurities and reduce the accumulation of impurities on the mesh box 33.

[0032] Implementation process: When it is not raining, the scented sheet 37 will emit fragrance to cover the odor emitted from the shaft 1, thereby reducing the level of odor near the shaft 1 and improving the comfort of pedestrians.

[0033] When the scented slices 37 are consumed and new scented slices 37 need to be added to the box cavity 35, the cylinder 7 is opened and the piston rod on the cylinder 7 is shortened, thereby driving the push block 9 to move left but not against the extension piece 21. The rack three 24 on the push block 9 is meshed with the gear two 25, thereby driving the rack four 26 to move right through the gear two 25, and the rack four 26 drives the connecting rod 27 and the transmission plate 28 to move right. The transmission plate 28 pushes the lowest scented slice 37 in the storage cavity 31 to move right, so that the scented slice 37 pushes the baffle 32 through the sheet feeding hole 34 and enters the box cavity 35. At this time, the top wall of the transmission plate 28 supports all the scented slices 37 in the storage cavity 31 and isolates the outside air from contacting all the scented slices 37 in the storage cavity 31, thereby reducing the volatilization rate of all the scented slices 37 in the storage cavity 31.

[0034] When new scented slices 37 need to be added to the box cavity 35 next time, the piston rod of the cylinder 7 is first extended and reset, thereby driving the conveying plate 28 to move left and reset. When the conveying plate 28 moves left to the left side of the storage cavity 31 and leaves the storage cavity 31, all the scented slices 37 in the storage cavity 31 fall down, and the piston rod of the cylinder 7 is shortened again, and the new scented slices 37 are added using the above principle.

[0035] When it rains lightly, rainwater enters the wellbore 1 through the filter water holes 17 and is discharged. The filter water holes 17 can filter out most of the impurities, and the oil separator 5 can isolate grease impurities to prevent grease blockage.

[0036] When it rains moderately, the top wall of the transmission plate 28 supports all the scented sheets 37 in the storage chamber 31, and the control cylinder shortens until the rack 26 pushes the extension piece 21 to overcome the elastic force of the spring 23 and move to the left. The extension piece 21 drives the limit rod 22 to move left and disengage from the lock slot 19. After the filter plate 16 loses the limit of the limit rod 22, the filter plate 16 rotates clockwise under the self-resetting force of the self-resetting shaft 15, so that rainwater can directly pass through the plate mounting hole 18 into the wellbore 1 for drainage, thereby speeding up the drainage speed. The oil separator 5 can isolate grease impurities and prevent grease blockage.

[0037] When it rains heavily, the manhole cover 3 is moved away from the prefabricated manhole ring 2 and placed on the ground, so that rainwater can directly enter the wellbore 1 for drainage, thereby improving the drainage efficiency. The oil separator 5 can isolate grease impurities and prevent grease blockage.

[0038] No matter it is rainy or sunny, there will always be large debris stuck above the filter water hole 17 and small debris stuck in the filter water hole 17. The cylinder 7 is turned on and the piston rod is extended, thereby driving the push block 9 to move right. When the gear 14 and the rack 16 are engaged, the rack 16 drives the gear 14 to rotate, and the gear 14 drives the rack 2 13 to move downward, so that the lifting piece 11 drives all the debris removal pieces 12 to move downward gradually. Each debris removal piece 12 is inserted into each filter water hole 17 respectively, and the small debris in the filter water hole 17 is pushed down for cleaning. The top seat 4 moves right to push away the large debris above the filter water hole 17, and then the piston rod is shortened, the push block 9 moves left to reset, and the debris removal piece 12 moves up to reset and disengage from the filter water hole 17 to complete the cleaning work.

[0039] The present invention has the following beneficial effects: By providing the filter plate 16, the filter water hole 17 and the limit assembly, a preliminary interception of larger debris in the rainwater is achieved, preventing it from directly entering the wellbore 1, thereby improving the efficiency of the primary filtration of rainwater and effectively reducing the risk of clogging of the drainage system; The debris removal piece 12 is used in conjunction with the lifting piece 11. Driven by the cooperation of gear 14, rack 16 and rack 2 13, debris inside and outside the filter water hole 17 can be regularly mechanically cleaned to ensure the smooth flow of the drainage channel, reduce the frequency of manual dredging, and improve maintenance convenience. The oil separator 5 installed in the wellbore 1 can effectively separate the oil and grease pollutants carried by the rainwater, preventing the oil impurities from being deposited at the bottom of the well or entering the pipeline system, thereby improving the drainage water quality and extending the service life of the downstream treatment facilities; When moderate rain occurs, the cylinder 7 pushes the extension piece 21 to overcome the elastic force of the spring 23, thereby driving the limit rod 22 to disengage the lock groove 19, causing the filter plate 16 to automatically flip open, and rainwater can be directly discharged into the wellbore 1 through the plate installation hole 18, thereby improving the drainage efficiency in response to heavy rain and enhancing the city's emergency drainage capacity; When encountering heavy rain, the manhole cover 3 can be removed as a whole to fully expose the wellhead, greatly improving the rainwater introduction capacity and ensuring drainage safety in extreme weather conditions; The fragrance release assembly provided on the manhole cover 3, including the mesh box 33, the box cavity 35 and the fragrance sheet 37, can actively release fragrance on sunny days or during rainless periods, effectively alleviating odor pollution near the sewage well, improving the surrounding environmental quality and pedestrian comfort; Through the linkage structure of the transmission groove 20, the second gear 25, the fourth rack 26 and the connecting rod 27, the conveyor plate 28 can automatically push the spare scented sheets 37 in the storage box 29 into the box cavity 35, realizing the automation of the replacement of the scented sheets 37, reducing the burden of manual maintenance and improving the intelligence level of the system; The entire structure has a clear modular design, and each component such as the filter plate 16, the mesh box 33, the oil separator 5, the storage box 29, etc. can be disassembled and replaced, which is convenient for daily maintenance, inspection or upgrading and expansion, and has good engineering adaptability and promotion prospects.

[0040] A method for constructing a sewage treatment type rainwater well structure based on a prefabricated well ring is used for constructing the rainwater well structure, comprising the following steps: excavating a well foundation pit, ensuring that the bottom of the foundation pit is flat and stable, placing the well shaft 1 vertically at the bottom of the foundation pit and performing position correction, pouring concrete on the outer wall of the well shaft 1, fixing the prefabricated well ring 2 on the well shaft 1, and placing the well cover 3 on the prefabricated well ring 2.

[0041] The components, modules, mechanisms and devices not described in detail in the present invention are all universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A sewage treatment type rainwater well structure based on a prefabricated well ring, characterized by: It includes a wellbore, a prefabricated well ring and a well cover. The prefabricated well ring is fixed to the wellbore, and the well cover is placed on the prefabricated well ring. The top wall of the well cover is fixed with a top seat, and a seat cavity is opened on the top seat. The inner wall of the seat cavity is fixed with a cylinder and a rack 1. The piston rod of the cylinder is fixed with a push block, and a block cavity is opened on the push block. The block cavity is slidably connected with a lifting piece, and the lifting piece is fixed with a debris removal piece and a rack 2. The inner wall of the block cavity is rotatably connected with gear 1, and the rack 2 is engaged with the gear 1. A mounting hole is opened on the well cover, and the inner wall of the mounting hole is rotatably connected with a filter plate through a self-resetting rotating shaft. The filter plate is provided with a filter water hole and a lock groove. A limiting component is connected to the well cover, and the limiting component extends into the lock groove to limit the filter plate. The inner wall of the wellbore is detachably connected with an oil separator.

2. A sewage treatment type rainwater well structure based on a prefabricated well ring according to claim 1, characterized in that: A transmission groove is provided on the manhole cover, and the limiting assembly includes an extension piece, a limiting rod and a spring. The limiting rod is slidably connected to the inner wall of the transmission groove, the extension piece and the limiting rod are fixed, the extension piece extends into the seat cavity, the extension piece is connected to the inner wall of the transmission groove through the spring, and the limiting rod extends into the lock groove to limit the filter plate.

3. A sewage treatment type rainwater well structure based on a prefabricated well ring according to claim 2, characterized in that: The well cover is connected with a fragrance releasing component.

4. A sewage treatment type rainwater well structure based on a prefabricated well ring according to claim 3, characterized in that: The fragrance release component includes a connecting frame and a net box. The connecting frame is fixed to the manhole cover. The net box is detachably connected to the connecting frame. A box cavity is opened on the net box. The box cavity is connected to the outer wall of the net box through the sheet inlet hole. Scented sheets are placed on the inner wall of the box cavity.

5. A sewage treatment type rainwater well structure based on a prefabricated well ring according to claim 4, characterized in that: The inner wall of the transmission groove is rotatably connected to gear 2, and gear 2 extends into the seat cavity. The inner wall of the transmission groove is slidably connected to rack 4 and connecting rod, rack 4 and connecting rod are fixedly connected, rack 4 and gear 2 are meshed, and the lower end of the connecting rod extends to the bottom of the manhole cover, and the lower end of the connecting rod is fixedly connected to a transmission plate. The manhole cover is detachably connected to a storage box, and the storage box is provided with a storage cavity and a transmission channel that are interconnected. The transmission channel connects two opposite outer walls of the storage box, and the transmission plate is slidably connected to the inner wall of the transmission channel. More than two spare scented sheets are stacked in the storage cavity, and the outer wall of the storage box is rotatably connected to a baffle.

6. A sewage treatment type rainwater well structure based on a prefabricated well ring according to claim 5, characterized in that: The filter water holes are provided with two or more, and the impurity removal sheets are provided with two or more.

7. A sewage treatment type rainwater well structure based on a prefabricated well ring according to claim 6, characterized in that: The bottom wall of the film feeding hole is inclined.

8. A sewage treatment type rainwater well structure based on a prefabricated well ring according to claim 7, characterized in that: The top seat is provided with a first inclined surface, and the push block is provided with a second inclined surface.

9. A sewage treatment type rainwater well structure based on a prefabricated well ring according to claim 8, characterized in that: The top wall of the net box is in a shape of convexity from the periphery to the middle.

10. A method for constructing a sewage treatment rainwater well structure based on a prefabricated well ring, characterized in that: The construction of the rainwater well structure described in any one of claims 1 to 9 comprises the following steps: excavating a well foundation pit, ensuring that the bottom of the foundation pit is flat and stable, placing the well shaft vertically at the bottom of the foundation pit and performing position correction, pouring concrete on the outer wall of the well shaft, fixing the prefabricated well ring on the well shaft, and placing the well cover on the prefabricated well ring.

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