下沉式绿地溢流口结构
By designing vertical pipes, permeable grates, and filter layers at the overflow outlets of sunken green spaces, the problem of overflow outlet blockage was solved, achieving rapid drainage and reduced maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SIPPR ENG GROUP
- Filing Date
- 2025-06-26
- Publication Date
- 2026-07-17
AI Technical Summary
In existing technologies, the overflow outlets of sunken green spaces are easily blocked by mud, sand, and other debris, preventing rainwater from being discharged in a timely manner, causing water accumulation in the park, and affecting normal life and work.
A sunken green space overflow structure was designed, including a vertical pipe, a permeable grate, and first and second filter layers. Excess rainwater is introduced into the underground rainwater pipe network through the vertical pipe, and a filter layer is set on the outside of the permeable grate to intercept silt and other debris, which are deposited in the sedimentation chamber.
It effectively prevents mud and other debris from entering the underground rainwater pipe network, ensures smooth drainage, quickly discharges excess rainwater, avoids pipe blockage, reduces maintenance costs, and ensures normal drainage in the park.
Smart Images
Figure CN224514359U_ABST
Abstract
Claims
1. A sunken greenway overflow structure, characterized by: The system includes a green ground area lower than the city ground level, on which vertical pipes are installed. The vertical pipes have connecting openings on their sides, which are connected to an underground rainwater pipe network. The vertical pipes also have a closed end below the connecting opening and an open end extending above the green ground area. The vertical pipe between the closed end and the connecting opening forms a sedimentation chamber. A permeable grate is installed at the open end. The top surface of the permeable grate is lower than the city ground level, and a first filter layer and a second filter layer are installed on the outside of the permeable grate.
2. The sunken green overflow structure according to claim 1, wherein: The vertical pipe is constructed of MU20 sintered shale bricks and has a 20mm thick cement mortar plaster layer on the inside.
3. The sunken green overflow structure according to claim 1, wherein: The closed end includes a C25 concrete base plate set on a crushed stone cushion layer, and the C25 concrete base plate is sealed and connected to the vertical pipe.
4. The sunken green overflow structure according to claim 1, wherein: The height of the sedimentation chamber is 180~220mm.
5. The sunken green overflow structure according to claim 1, wherein: The bottom of the sedimentation chamber is provided with a sedimentation layer that is high on both sides and low in the middle.
6. The sunken green overflow structure according to claim 1, wherein: The permeable grate adopts a frustum or truncated cone structure according to the cross-sectional shape of the vertical pipe. The top and sides of the permeable grate are provided with permeable holes, and the bottom surface of the permeable grate is provided with a folded edge structure connected to the vertical pipe.
7. The sunken green overflow structure according to claim 6, wherein: The permeable grate has a folded edge structure with a lug for inserting a pivot, and the lug is hinged to the top surface of the vertical pipe.
8. The sunken green space overflow outlet structure according to claim 7, characterized in that: The first filter layer is a permeable geotextile surrounding the side of the permeable grate, with the lower edge of the permeable geotextile laid on the top surface of the vertical pipe.
9. The sunken green overflow structure according to claim 7, wherein: The second filter layer is located outside the first filter layer. The second filter layer is composed of piled pebbles. The piled pebbles are arranged in a similar shape to the side of the permeable grate on the top surface of the vertical pipe and the green ground, and the top surface of the piled pebbles is flush with the top surface of the permeable grate.