Sponge type rainwater inspection well
By designing a sponge-type rainwater inspection well and utilizing a combination structure of filler layer, overflow pipe and backwash coil, the problem of rainwater eroding urban roads in green belts was solved, achieving internal absorption of rainwater and mitigation of urban flooding.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-18
- Publication Date
- 2026-03-31
AI Technical Summary
Existing technologies are unable to effectively intercept and absorb rainwater from green belts, causing rainwater to wash onto roads and squares, leading to urban flooding.
Design a sponge-type rainwater inspection well, comprising a filler layer, an overflow pipe, and a backwash coil. The overflow pipe intercepts rainwater and absorbs it through infiltration and retention. The backwash coil prevents the filler from clogging. Geotextile is used to isolate the filler from the foundation, achieving internal absorption of rainwater.
Effectively intercepting and absorbing rainwater from green belts reduces rainwater discharge, alleviates or even eliminates urban flooding, and achieves source reduction of rainwater within the city.
Smart Images
Figure CN224063621U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of inspection well technology, and in particular to a sponge-type rainwater inspection well. Background Technology
[0002] In recent years, urban flooding has received widespread attention from society. Some urban flooding is caused by rainwater overflowing from green belts and washing onto roads or squares. This utility model can reduce the source of flooding through infiltration and retention, and combined with rapid overflow drainage to intercept a large amount of rainwater from green belts, thereby mitigating or even eliminating urban flooding. Summary of the Invention
[0003] To address the shortcomings of existing technologies, this utility model provides a sponge-type rainwater inspection well, which improves the infiltration, storage, and drainage capacity of rainwater around the rainwater well in green belts, and prevents rainwater from being washed into roads, squares, etc., causing urban flooding problems.
[0004] The technical solution adopted in this utility model is:
[0005] A sponge-type rainwater inspection well includes: a rainwater inspection well with an upward opening; a filler layer is provided around the top of the rainwater inspection well; an overflow pipe extends along the length of the filler layer from the upper part of the filler layer; a backwash coil extends along the length of the filler layer from the lower part of the filler layer; geotextile is wrapped around the outer periphery of the filler layer; one end of the backwash coil extends into the rainwater inspection well; and the end of the backwash coil extending into the rainwater inspection well is connected to an interface flange.
[0006] Preferably, in the sponge-type rainwater inspection well, the overflow pipe comprises four pipes, which are symmetrically arranged about the central axis of the rainwater inspection well.
[0007] Preferably, in the sponge-type rainwater inspection well, the diameter of the overflow pipe is 100~200mm.
[0008] Preferably, in the sponge-type rainwater inspection well, the backwash coil is arranged around the rainwater inspection well.
[0009] Preferably, in the sponge-type rainwater inspection well, the diameter of the backwash coil is 25~50mm.
[0010] Preferably, in the sponge-type rainwater inspection well, the filler of the filler layer is either gravel or ceramsite, and the thickness of the filler layer is 0.5~1m.
[0011] Preferably, in the sponge-type rainwater inspection well, the porosity of the gravel or ceramsite is 35%~40%.
[0012] Preferably, in the sponge-type rainwater inspection well, a plurality of overflow holes are provided at intervals on the overflow pipe, and the diameter of the overflow holes is 10~20mm.
[0013] Preferably, the sponge-type rainwater inspection well is provided with an inlet pipe and an outlet pipe on both sides of the rainwater inspection well.
[0014] Advantages of this utility model:
[0015] This invention's sponge-type rainwater inspection well can intercept a large amount of rainwater from green belts, preventing it from being washed into roads, squares, and other areas, thus reducing the amount of rainwater discharged from green belts and mitigating or even eliminating urban flooding. The intercepted rainwater is preferentially absorbed through infiltration and retention, achieving rainwater absorption within the city and reducing emissions at the source. Attached Figure Description
[0016] Figure 1 This is the front view of the sponge-type rainwater inspection well of this utility model.
[0017] Figure 2 This is a cross-sectional view of the sponge-type rainwater inspection well of this utility model. Detailed Implementation
[0018] The present invention will be further described below with reference to the specific accompanying drawings and embodiments.
[0019] like Figures 1-2 A sponge-type rainwater inspection well, comprising: a rainwater inspection well 1 with an upward opening; a filler layer 3 is provided around the top of the rainwater inspection well 1; an overflow pipe 2 extends along the length of the filler layer 3 in the upper part of the filler layer 3; a backwash coil 5 extends along the length of the filler layer 3 in the lower part of the filler layer 3; geotextile 4 is wrapped around the outer periphery of the filler layer 3; one end of the backwash coil 5 extends into the rainwater inspection well 1; and the end of the backwash coil 5 extending into the rainwater inspection well 1 is connected to an interface flange 6.
[0020] The overflow pipe 2 comprises four pipes, which are symmetrically arranged about the central axis of the rainwater inspection well 1; the diameter of the overflow pipe 2 is 100~200mm; the backwash coil 5 is arranged around the rainwater inspection well 1; the diameter of the backwash coil 5 is 25~50mm; the filler of the packing layer 3 is either gravel or ceramsite, the thickness of the packing layer 3 is 0.5~1m, and the porosity of the gravel or ceramsite is 35%~40%; multiple overflow holes 21 are arranged at intervals on the overflow pipe 2, and the diameter of the overflow holes 21 is 10~20mm; the rainwater inspection well 1 is provided with an inlet pipe 7 and an outlet pipe 8 on both sides respectively.
[0021] The filler layer 3 can collect rainwater over a large area and retain it within the filler layer 3. The rainwater is gradually absorbed through infiltration. Excess rainwater flows into the rainwater inspection well 1 through the overflow pipe 2. The backwash coil 5 is connected to the interface flange 6, which facilitates the quick installation of the temporary backwash water pump interface. The backwash coil 5 is provided with an overflow hole 21 to facilitate uniform backwashing and alleviate the short-term blockage problem of the filler layer. The filler layer is wrapped with geotextile to ensure water seepage while separating the filler layer filler from the plain soil foundation. The filler layer is reasonably selected according to the implementation conditions. The internal filler should be filled with filler with high porosity. The filler can be gravel or ceramsite. The filler layer can be made into a prefabricated structure for easy removal and cleaning. The overflow pipe 2 and the backwash coil 5 in the filler layer are directly set in the prefabricated structure. The specific steps are: pour the inspection well 1, then fix the filler in the prefabricated structure such as the gabion, and set the overflow pipe 2 and the backwash coil 5 in the filler to form a prefabricated structure. Finally, the prefabricated structure is set around the rainwater inspection well 1.
[0022] This utility model's sponge-type rainwater inspection well achieves source reduction through infiltration and retention. Combined with overflow and rapid drainage, it intercepts a large amount of rainwater from green belts, preventing it from being washed into roads, squares, and other areas, thereby reducing the amount of rainwater discharged from green belts and thus mitigating or even eliminating urban flooding.
[0023] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A spongy-type stormwater manhole, characterized by: The rainwater inspection well (1) is provided with a filler layer (3) around the top, an overflow pipe (2) is arranged in the upper part of the filler layer (3) along the length direction of the filler layer (3), a backwashing coil (5) is arranged in the lower part of the filler layer (3) along the length direction of the filler layer (3), the filler layer (3) is wrapped with a geotextile (4), and one end of the backwashing coil (5) extends into the rainwater inspection well (1) and is connected with a connecting flange (6).
2. The spongy-type stormwater manhole of claim 1, wherein: The overflow pipe (2) comprises four overflow pipes (2) which are symmetrically arranged about the central axis of the rainwater inspection well (1).
3. The spongy-type stormwater manhole of claim 2, wherein: The diameter of the overflow pipe (2) is 100-200 mm.
4. The spongy-type stormwater manhole of claim 1, wherein: The backwashing coil (5) is arranged around the rainwater inspection well (1).
5. The spongy-type stormwater manhole of claim 4, wherein: The diameter of the backwashing coil (5) is 25-50 mm.
6. The spongy-type stormwater manhole of claim 1, wherein: The filler of the filler layer (3) is one of sand and gravel or ceramsite, and the thickness of the filler layer (3) is 0.5-1 m.
7. The spongy-type stormwater manhole of claim 6, wherein: The porosity of the sand or ceramsite is 35-40%.
8. The spongy-type stormwater manhole of claim 1, wherein: A plurality of overflow holes (21) are arranged on the overflow pipe (2) at intervals, and the diameter of the overflow hole (21) is 10-20 mm.
9. The spongy-type stormwater manhole of claim 1, wherein: The rainwater inspection well (1) is provided with a water inlet pipe (7) and a water outlet pipe (8) on the two sides, respectively.