Sponge city overflow well and implementation process thereof

Abstract

The application discloses a sponge city overflow well and an implementation process thereof and belongs to the technical field of overflow wells. The sponge city overflow well comprises an upper well body, a well base and a lower well body, further comprises a well mouth interception assembly arranged in the inside of the well base, the lower well body is located at the bottom of the upper well body, the upper well body and the lower well body are arranged as an integrated structure, the well base is located above the upper well body, and the well base is connected with the upper well body through a clamping groove. In order to solve the problems that there are many well shaft structures in the city, the manual operation mode is very time-consuming and laborious in the actual operation process, and there is a certain risk, the buoyancy of the floating inner cavity and the overflow pipe cavity is used to lift the partition shaft plate upward, the colloid supporting ring can extrude the split fan-shaped gate from the outside in the process that the outer plastic connecting pipe is lifted, the fan-shaped gate is folded, and the accumulated water in the well shaft cannot spread to the road after the fan-shaped gate is closed.

Description

Technical Field

[0001] This invention relates to the field of overflow well technology, specifically to an overflow well for sponge cities and its implementation process. Background Technology

[0002] Sponge city is a new generation of urban stormwater management concept, which refers to a city that can be as resilient as a sponge in adapting to environmental changes and coping with natural disasters caused by rainwater. Overflow wells are an important part of the urban drainage system.

[0003] Chinese patent CN216238874U discloses a novel overflow well for intercepting sewage and preventing backflow in sponge cities. A first and second handle are movably connected to a first baffle and a second upper baffle, respectively, facilitating the insertion and removal of the outer and inner casings. When sewage flows back into the overflow well, this forces the bottom cover to move upwards, causing it to push the side baffles upwards along a slide. A baffle strip is fixedly connected around the inner support plate, and the lower outer casing is larger than the upper outer casing. Under the thrust of the water, the baffle strip rises together with the bottom cover and locks between the lower and upper outer casings, forming a first layer of seal and effectively preventing sewage overflow.

[0004] In the aforementioned patent, the overflow well is manually controlled to prevent overflow during urban flooding. However, there are many well structures in the city, and this manual operation is very time-consuming and labor-intensive in actual operation, and there are certain dangers. Therefore, it does not meet the existing needs. In response, a sponge city overflow well and its implementation process are proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a sponge city overflow well and its implementation process. By using the buoyancy of the water inside the floating inner cavity and overflow pipe cavity, the partition shaft plate is lifted upward. During the process of the outer plastic bearing pipe being lifted, the colloid support ring can squeeze the opening and closing fan-shaped gate from the outside, closing the fan-shaped gate. After the fan-shaped gate is closed, the water inside the well can not spread to the road surface, which can solve the problems in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a sponge city overflow well, comprising an upper well body, a well base, and a lower well body, and further comprising a wellhead interception component disposed inside the well base. The lower well body is located at the bottom of the upper well body, and the upper and lower well bodies are configured as an integral structure. The well base is located above the upper well body, and the well base and the upper well body are connected by a slot. An integral water inlet is provided at the bottom of the lower well body. An overflow pipe is provided between the upper and lower well bodies, and the overflow pipe is located on the outside of the upper and lower well bodies. An inner tank diversion pipe is provided inside the lower well body, and the inner tank diversion pipe is connected to the lower well body by a slot. A diversion hole is provided at the bottom of the inner tank diversion pipe, and an overflow cavity is provided between the inner tank diversion pipe and the lower well body. The inner tank diversion pipe is connected to the overflow cavity through the diversion hole.

[0007] Preferably, an outer plastic receiving pipe is provided above the overflow pipe cavity, and a sealing pipe is provided at the bottom of the outer plastic receiving pipe. The sealing pipe extends into the interior of the overflow pipe cavity, and a drain outlet is provided on the outside of the overflow pipe cavity. One end of the overflow pipe extends into the interior of the drain outlet.

[0008] Preferably, a partition shaft plate is provided between the sealing insertion tube and the outer plastic receiving tube, a floating inner cavity is provided between the partition shaft plate and the lower well body, the floating inner cavity is located below the partition shaft plate, a pressure relief inner cavity is provided between the partition shaft plate and the well seat, the pressure relief inner cavity is located above the partition shaft plate, and a bearing ring is provided on the outer side of the partition shaft plate, and the partition shaft plate is fitted and connected to the upper well body through the bearing ring.

[0009] Preferably, the bottom of the floating inner cavity is provided with a water inlet, the other end of the water pipe extends into the interior of the water inlet, a colloid support ring is provided on the inner side of the top of the outer plastic support pipe, the colloid support ring is connected to the outer plastic support pipe by bolts, the top of the upper well body is provided with a well cover groove, and a drainage well groove is provided below the well cover groove.

[0010] Preferably, the wellhead retaining assembly includes a lifting ring frame, a retaining ring support, and four fan-shaped gates. The retaining ring support is bolted to the well base. The lifting ring frame is located above the retaining ring support, and the fan-shaped gates are located below the retaining ring support.

[0011] Preferably, a supporting screw is provided between the lifting ring frame and the fixing ring support, the supporting screw is welded to the fixing ring support, a vertical spring is provided on the outside of the supporting screw, the lifting ring frame is telescopically connected to the vertical spring through the vertical spring, and a limit nut is provided at one end of the supporting screw, the limit nut is rotatably connected to the supporting screw through a thread.

[0012] Preferably, the lifting ring frame is provided with an inner ring rail, and a horizontal spring is provided inside the inner ring rail. One end of the horizontal spring is provided with a transition slide rod, which is slidably connected to the inner ring rail through the horizontal spring. The transition slide rod is connected to the sector gate plate by screws.

[0013] An implementation process for an overflow well in a sponge city includes the following steps:

[0014] Step 1: Install the water inlet at the bottom of the lower well body above the drain pipe. Then place the inner tank diversion pipe inside the lower well body. After fixing the inner tank diversion pipe, install the outer plastic connector above the inner tank diversion pipe. Then install the well cover on the top of the upper well body and seal the installation gaps.

[0015] Step 2: After the well layout is completed, fix the retaining ring support to the inner side of the bottom of the drainage well. Then, install the lifting ring frame above the support screws around the retaining ring support. Adjust the distance between the lifting ring frame and the retaining ring support by rotating the limit nut according to the actual well size and structure. Finally, place the well cover in the well cover groove on the surface of the well seat.

[0016] Step 3: Rainwater enters the manhole through the groove of the manhole cover. The rainwater inside the manhole flows into the sewer pipe through the outer plastic support pipe and the inner tank diversion pipe. When the water level reaches the water inlet, the accumulated water will enter the overflow pipe cavity through the diversion hole.

[0017] Step 4: As the water level rises, the accumulated water can also enter the interior of the floating chamber through the overflow pipe. With the buoyancy of the water inside the floating chamber and the overflow pipe, the outer plastic bearing pipe is pushed upward. The raised outer plastic bearing pipe squeezes the fan-shaped gate from the outside, closing the fan-shaped gate. After the fan-shaped gate is closed, the accumulated water inside the well can not spread to the road surface.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. In this invention, rainwater enters the interior of the manhole through the groove in the manhole cover. The rainwater inside the manhole flows into the interior of the sewer pipe through the outer plastic bearing pipe and the inner liner diversion pipe. When the water level spreads to the water inlet, the accumulated water will enter the overflow pipe cavity through the diversion hole. As the water level rises, the accumulated water can also enter the interior of the floating inner cavity through the overflow pipe. At this time, the accumulated water is simultaneously poured into the overflow pipe cavity and the floating inner cavity. During the process, when the accumulated water in the floating inner cavity cannot provide a large buoyancy to the outer plastic bearing pipe, the water level in the overflow pipe cavity will rise. At this time, the buoyancy of the accumulated water in the floating inner cavity and the overflow pipe cavity will lift the partition shaft plate upward. During the process of the outer plastic bearing pipe rising, the colloid support ring can squeeze the opening and closing fan-shaped gate from the outside, closing the fan-shaped gate. After the fan-shaped gate is closed, the accumulated water inside the manhole cannot spread to the road surface.

[0020] 2. In this invention, after the water level drops, the water inside the overflow pipe flows back into the sewer pipe, and the water inside the floatation chamber also flows back into the overflow pipe. After losing the support of the buoyancy of the water, the outer plastic bearing pipe will automatically descend under the influence of gravity. When the outer plastic bearing pipe separates from the sector gate, the horizontal spring inside the lifting ring will pull the sector gate back through the transition slide rod. At this time, the four sets of sector gates move outward at the same time, so that the inside of the well returns to the open and closed state. In this way, no manual intervention is required in the entire process from closing to opening and closing. Attached Figure Description

[0021] Figure 1 This is the overall front view of the present invention;

[0022] Figure 2 This is a schematic diagram of the shaft closure structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the shaft opening and closing structure of the present invention;

[0024] Figure 4 This is a schematic diagram of the wellhead interception component structure of the present invention;

[0025] Figure 5 This is a schematic diagram of the sector-shaped gate structure of the present invention;

[0026] Figure 6 This is a schematic diagram of the lifting ring frame structure of the present invention.

[0027] In the diagram: 1. Upper well body; 2. Well base; 3. Lower well body; 4. Wellhead interception assembly; 5. Outer plastic support pipe; 201. Well cover mounting groove; 202. Drainage well groove; 301. Water inlet; 302. Overflow pipe; 303. Inner tank diversion pipe; 3021. Drain outlet; 3022. Water inlet; 3031. Diversion hole; 3032. Overflow pipe cavity; 401. Lifting ring frame; 402. Fixing ring support; 403. Sector gate; 404. Support screw; 4011. Inner ring rail; 4012. Adapter slide rod; 4013. Horizontal spring; 4041. Limit nut; 4042. Vertical spring; 501. Colloid support ring; 502. Partition shaft plate; 503. Sealing tube; 504. Floating inner cavity; 505. Pressure discharge inner cavity; 5021. Bearing ring clamp. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please see Figure 1-2 This invention provides an embodiment of a sponge city overflow well, comprising an upper well body 1, a well base 2, and a lower well body 3, and also includes a wellhead interception component 4 disposed inside the well base 2. The lower well body 3 is located at the bottom of the upper well body 1, and the upper well body 1 and lower well body 3 are configured as an integral structure. The well base 2 is located above the upper well body 1, and the well base 2 and the upper well body 1 are connected by a slot. An integral water inlet 301 is provided at the bottom of the lower well body 3, and a [missing information - likely a type of structure] is provided between the upper well body 1 and the lower well body 3. An overflow pipe 302 is installed on the outside of the upper well body 1 and the lower well body 3. An inner tank diversion pipe 303 is installed inside the lower well body 3. The inner tank diversion pipe 303 is connected to the lower well body 3 through a slot. A diversion hole 3031 is provided at the bottom of the inner tank diversion pipe 303. An overflow cavity 3032 is provided between the inner tank diversion pipe 303 and the lower well body 3. The inner tank diversion pipe 303 is connected to the overflow cavity 3032 through the diversion hole 3031.

[0030] Install the water inlet 301 at the bottom of the lower well body 3 above the drain pipe. Then place the inner tank diversion pipe 303 inside the lower well body 3. After fixing the inner tank diversion pipe 303, install the outer plastic support pipe 5 above the inner tank diversion pipe 303. Then, install the well seat 2 on the top of the upper well body 1 and seal the installation gap. After the well is arranged, fix the retaining ring support 402 on the inner side of the bottom of the drainage well trough 202. Then, install the lifting ring frame 401 above the support screw 404 around the retaining ring support 402. Rotate the limiting nut 4041 according to the actual well size and structure to adjust the distance between the lifting ring frame 401 and the retaining ring support 402. Finally, place the well cover in the well cover groove 201 on the surface of the well seat 2.

[0031] Please see Figure 2-3An outer plastic receiving pipe 5 is installed above the overflow pipe cavity 3032, and a sealing pipe 503 is installed at the bottom of the outer plastic receiving pipe 5. The sealing pipe 503 extends into the interior of the overflow pipe cavity 3032. A drain outlet 3021 is installed on the outside of the overflow pipe cavity 3032, and one end of the overflow pipe 302 extends into the interior of the drain outlet 3021. A partition shaft plate 502 is installed between the sealing pipe 503 and the outer plastic receiving pipe 5. A floating inner cavity 504 is installed between the partition shaft plate 502 and the lower well body 3. The floating inner cavity 504 is located below the partition shaft plate 502. A pressure relief inner cavity 505 is installed between the partition shaft plate 502 and the well base 2. The pressure relief inner cavity 505 is located below the partition shaft plate 502. Above, a bearing ring 5021 is provided on the outer side of the partition shaft plate 502. The partition shaft plate 502 is connected to the upper well body 1 through the bearing ring 5021. The bearing ring 5021 can reduce the frictional resistance between the partition shaft plate 502 and the well body during the lifting and lowering process while ensuring the sealing performance. A water inlet 3022 is provided at the bottom of the floating inner cavity 504. The other end of the water pipe extends into the interior of the water inlet 3022. A colloid support ring 501 is provided on the inner side of the top of the outer plastic support pipe 5. The colloid support ring 501 is connected to the outer plastic support pipe 5 by bolts. A well cover groove 201 is provided on the top of the upper well body 1. A drainage well groove 202 is provided below the well cover groove 201.

[0032] Rainwater enters the manhole through the manhole cover groove 201. Inside the manhole, rainwater flows into the sewer pipe through the outer plastic retaining pipe 5 and the inner liner diversion pipe 303. When the water level reaches the water inlet 301, the accumulated water enters the overflow pipe cavity 3032 through the diversion hole 3031. As the water level rises, the accumulated water can also enter the floating inner cavity 504 through the overflow pipe 302. At this point, the accumulated water simultaneously fills both the overflow pipe cavity 3032 and the floating inner cavity 504. When the water in the floating inner cavity 504 can no longer provide sufficient buoyancy to the external plastic bearing pipe 5, the water level in the overflow pipe cavity 3032 will rise. At this time, the buoyancy of the water in the floating inner cavity 504 and the overflow pipe cavity 3032 will lift the partition shaft plate 502 upward. During the process of the external plastic bearing pipe 5 rising, the colloid support ring 501 can squeeze the opening and closing fan-shaped gate 403 from the outside, closing the fan-shaped gate 403. After the fan-shaped gate 403 is closed, the water inside the well can not spread to the road surface.

[0033] Please see Figure 4-6The wellhead retaining assembly 4 includes a lifting ring frame 401, a retaining ring support 402, and four sector gates 403. The retaining ring support 402 is bolted to the well base 2. The lifting ring frame 401 is located above the retaining ring support 402, and the sector gates 403 are located below the retaining ring support 402. A support screw 404 is provided between the lifting ring frame 401 and the retaining ring support 402. The support screw 404 is welded to the retaining ring support 402. A vertical spring 4042 is provided on the outer side of the support screw 404. The lifting ring frame 401 is connected to the retaining ring support 402 by the vertical spring. Spring 4042 is telescopically connected to vertical spring 4042. One end of the supporting screw 404 is provided with a limit nut 4041. The limit nut 4041 and the supporting screw 404 are rotatably connected by threads. The inside of the lifting ring frame 401 is provided with an inner ring rail 4011. The inside of the inner ring rail 4011 is provided with a horizontal spring 4013. One end of the horizontal spring 4013 is provided with a transition slide rod 4012. The transition slide rod 4012 is slidably connected to the inner ring rail 4011 through the horizontal spring 4013. The transition slide rod 4012 is connected to the sector gate 403 by screws.

[0034] After the water level drops, the water inside the overflow pipe cavity 3032 flows back into the sewer pipe, and the water inside the floating inner cavity 504 also flows back into the overflow pipe cavity 3032. After losing the support of the buoyancy of the water, the outer plastic bearing pipe 5 will automatically descend under the influence of gravity. When the outer plastic bearing pipe 5 separates from the sector gate 403, the horizontal spring 4013 inside the lifting ring frame 401 will pull the sector gate 403 back through the transition slide rod 4012. At this time, the four sets of sector gates 403 move outward at the same time, so that the inside of the well returns to the open and closed state. In this way, no manual intervention is required in the entire process from closing to opening and closing, which improves work efficiency and avoids the risks of manual operation.

[0035] When the sector gate 403 is in the open or closed state, the water on the road surface flows into the manhole through the gap at the manhole cover. When the water impacts the sector gate 403, the sector gate 403 can reduce the impact force of the water on itself with the help of the support screw 404 and the vertical spring 4042, so as to avoid the sector gate 403 from shifting or misaligning under the impact of long-term water accumulation.

[0036] Specifically, the implementation process of sponge city overflow wells is as follows:

[0037] Install the water inlet 301 at the bottom of the lower well body 3 above the drain pipe. Then, place the inner tank diversion pipe 303 inside the lower well body 3 and fix the inner tank diversion pipe 303. Next, install the outer plastic support pipe 5 above the inner tank diversion pipe 303. Then, install the well seat 2 on top of the upper well body 1 and seal the installation gaps. After the well layout is completed, fix the retaining ring support 402 to the inner side of the bottom of the drainage well trough 202. Then, install the lifting ring frame 401 above the support screws 404 around the retaining ring support 402. Adjust the distance between the lifting ring frame 401 and the retaining ring support 402 by rotating the limiting nut 4041 according to the actual well size and structure. Finally, place the well cover on the surface of the well seat 2. The manhole cover is installed in the groove 201; rainwater enters the manhole through the manhole cover groove 201 and flows into the sewer pipe through the outer plastic bearing pipe 5 and the inner liner diversion pipe 303. When the water level reaches the water inlet 301, the water will enter the overflow pipe 3032 through the diversion hole 3031. As the water level rises, the water can also enter the floating inner cavity 504 through the overflow pipe 302. With the buoyancy of the water in the floating inner cavity 504 and the overflow pipe 3032, the outer plastic bearing pipe 5 is lifted upward. The raised outer plastic bearing pipe 5 squeezes the fan-shaped gate 403 from the outside, closing the fan-shaped gate 403. After the fan-shaped gate 403 is closed, the water inside the manhole cannot spread to the road surface.

[0038] Working principle: Rainwater enters the manhole through the manhole cover groove 201. Inside the manhole, rainwater flows into the sewer pipe through the outer plastic retaining pipe 5 and the inner liner diversion pipe 303. When the water level reaches the water inlet 301, the accumulated water enters the overflow pipe cavity 3032 through the diversion hole 3031. As the water level rises, the accumulated water can also enter the floating inner cavity 504 through the overflow pipe 302. At this time, the accumulated water simultaneously fills both the overflow pipe cavity 3032 and the floating inner cavity 504. When the water in the floating inner cavity 504 can no longer provide sufficient buoyancy to the external plastic bearing pipe 5, the water level in the overflow pipe cavity 3032 will rise. At this time, the buoyancy of the water in the floating inner cavity 504 and the overflow pipe cavity 3032 will lift the partition shaft plate 502 upward. During the process of the external plastic bearing pipe 5 rising, the colloid support ring 501 can squeeze the opening and closing sector gate 403 from the outside, closing the sector gate 403. After the sector gate 403 is closed, the water inside the well cannot spread to the road surface. After the water level drops... The water inside the overflow pipe cavity 3032 flows back into the sewer pipe, and the water inside the floatation cavity 504 also flows back into the overflow pipe cavity 3032. After losing the buoyancy support of the water, the outer plastic support pipe 5 will automatically descend under the influence of gravity. When the outer plastic support pipe 5 separates from the sector gate 403, the horizontal spring 4013 inside the lifting ring frame 401 will pull the sector gate 403 back through the transition slide rod 4012. At this time, the four sets of sector gates 403 move outwards at the same time, so that the inside of the shaft returns to the open / closed state. In this state, the entire process from closing to opening and closing requires no manual intervention, which improves work efficiency and avoids the risks of manual operation. When the sector gate 403 is in the open or closed state, the water on the road surface flows into the interior of the manhole through the gap at the manhole cover. When the water impacts the sector gate 403, the sector gate 403 can reduce the impact force of the water on itself with the help of the supporting screw 404 and the vertical spring 4042, so as to prevent the sector gate 403 from shifting or misaligning under the impact of long-term water accumulation.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sponge city overflow well, comprising an upper well body (1), a well base (2), and a lower well body (3), characterized in that... ； It also includes a wellhead interception component (4), which is set inside the well seat (2). The lower well body (3) is located at the bottom of the upper well body (1). The upper well body (1) and the lower well body (3) are set as an integral structure. The well seat (2) is located above the upper well body (1). The well seat (2) and the upper well body (1) are connected by a slot. An integral water inlet (301) is set at the bottom of the lower well body (3). An overflow pipe (302) is set between the upper well body (1) and the lower well body (3). The overflow pipe (302) is set with... Located on the outside of the upper well body (1) and the lower well body (3), the lower well body (3) is provided with an inner liner diversion pipe (303), which is connected to the lower well body (3) through a slot. The bottom of the inner liner diversion pipe (303) is provided with a diversion water hole (3031), and an overflow cavity (3032) is provided between the inner liner diversion pipe (303) and the lower well body (3). The inner liner diversion pipe (303) is connected to the overflow cavity (3032) through the diversion water hole (3031). Next, an outer plastic receiving pipe (5) is provided above the overflow pipe cavity (3032), and a sealing pipe (503) is provided at the bottom of the outer plastic receiving pipe (5). The sealing pipe (503) extends into the interior of the overflow pipe cavity (3032). A drain outlet (3021) is provided on the outside of the overflow pipe cavity (3032). One end of the overflow pipe (302) extends into the interior of the drain outlet (3021). A partition plate (502) is provided between the sealing pipe (503) and the outer plastic receiving pipe (5). A floating inner cavity (504) is provided between the partition shaft plate (502) and the lower well body (3), and the floating inner cavity (504) is located below the partition shaft plate (502). A pressure relief inner cavity (505) is provided between the partition shaft plate (502) and the well seat (2), and the pressure relief inner cavity (505) is located above the partition shaft plate (502). A bearing ring (5021) is provided on the outer side of the partition shaft plate (502), and the partition shaft plate (502) is connected to the upper well body (1) through the bearing ring (5021).

2. The sponge city overflow well according to claim 1, characterized in that: The bottom of the floating inner cavity (504) is provided with a water inlet (3022), and the other end of the overflow pipe (302) extends into the interior of the water inlet (3022). The inner side of the top of the outer plastic support pipe (5) is provided with a colloid support ring (501), and the colloid support ring (501) is connected to the outer plastic support pipe (5) by bolts. The top of the upper well body (1) is provided with a well cover groove (201), and a drainage well groove (202) is provided below the well cover groove (201).

3. The sponge city overflow well according to claim 2, characterized in that: The wellhead interception assembly (4) includes a lifting ring frame (401), a fixing ring support (402), and a fan-shaped gate (403). There are four fan-shaped gates (403). The fixing ring support (402) is connected to the well seat (2) by bolts. The lifting ring frame (401) is located above the fixing ring support (402), and the fan-shaped gate (403) is located below the fixing ring support (402).

4. The sponge city overflow well according to claim 3, characterized in that: A support rod (404) is provided between the lifting ring frame (401) and the fixing ring support (402). The support rod (404) is welded to the fixing ring support (402). A vertical spring (4042) is provided on the outside of the support rod (404). The lifting ring frame (401) is telescopically connected to the fixing ring support (402) through the vertical spring (4042). A limit nut (4041) is provided at one end of the support rod (404). The limit nut (4041) is rotatably connected to the support rod (404) through a thread.

5. The sponge city overflow well according to claim 4, characterized in that: The lifting ring frame (401) is provided with an inner ring rail (4011) inside, and a horizontal spring (4013) is provided inside the inner ring rail (4011). One end of the horizontal spring (4013) is provided with a transition slide rod (4012). The transition slide rod (4012) is slidably connected to the inner ring rail (4011) through the horizontal spring (4013). The transition slide rod (4012) is connected to the sector gate (403) by screws.

6. An implementation process for a sponge city overflow well, based on the sponge city overflow well described in claim 5, wherein, Includes the following steps: Step 1: Install the water inlet (301) at the bottom of the lower well body (3) above the drain pipe, then place the inner tank diversion pipe (303) inside the lower well body (3), fix the inner tank diversion pipe (303), then install the outer plastic support pipe (5) above the inner tank diversion pipe (303), then cover the well seat (2) on the top of the upper well body (1) and seal the installation gaps; Step 2: After the well layout is completed, fix the retaining ring support (402) to the inner side of the bottom of the drainage well trough (202), then install the lifting ring frame (401) above the support screws (404) around the retaining ring support (402), and rotate the limiting nut (4041) according to the actual well size and structure to adjust the distance between the lifting ring frame (401) and the retaining ring support (402). Finally, place the well cover in the well cover mounting groove (201) on the surface of the well seat (2). Step 3: Rainwater enters the interior of the well through the manhole cover groove (201). The rainwater inside the well flows into the interior of the sewer pipe through the outer plastic bearing pipe (5) and the inner liner diversion pipe (303). When the water level spreads to the water inlet (301), the accumulated water will enter the overflow pipe cavity (3032) through the diversion hole (3031). Step 4: As the water level rises, the accumulated water enters the interior of the floating inner cavity (504) through the overflow pipe (302). With the help of the buoyancy of the accumulated water in the floating inner cavity (504) and the overflow pipe cavity (3032), the outer plastic bearing pipe (5) is pushed upward. The raised outer plastic bearing pipe (5) squeezes the fan-shaped gate (403) from the outside, closing the fan-shaped gate (403). After the fan-shaped gate (403) is closed, the accumulated water inside the well can not spread to the road surface.

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