parking lot drain

Abstract

The utility model discloses a park drainage ditch, and the drainage ditch includes basic section, and the upper half part of basic section is planting area and drainage area, and the lower half part forms the water collecting groove, and the planting area and planting area are separated through the baffle, and the waist of planting area is equipped with the supporting plate, and the supporting plate and baffle form the containing cavity of containing plant, and at least one lateral wall of containing cavity is the filling plate, and the filling plate has the grid or porosity of water -permeable. The utility model discloses, through the improvement basic section structure, make the lateral wall of drainage ditch have the water -permeable performance, and after planting plant or placing planting box in containing cavity, the excess moisture of basic section lateral wall can seep out, and supplies for the adjacent soil, improves the ecological compatibility.

Description

Technical Field

[0001] This utility model relates to a rain garden drainage system, and more particularly to a park drainage ditch. Background Technology

[0002] As a priority demonstration site for sponge city construction, urban parks' internal drainage systems not only undertake basic flood control functions but also possess comprehensive missions such as rainwater retention, infiltration and purification, and integration with the ecological landscape. Park drainage ditches, as a core component of park green space infrastructure, are structured canal systems specifically designed for the efficient collection and orderly drainage of rainwater, surface runoff, and irrigation wastewater. Heavy rainfall can generate large amounts of precipitation in a short period, easily triggering urban flooding disasters, posing a severe challenge to the dynamic control and resilience of drainage systems in handling peak flow.

[0003] CN 214246020 U discloses a storm drain with a filter screen. A spring, a baffle, and a filter screen are connected in sequence. One end of the filter screen is connected to the side wall of the storm drain chamber, and the other end is connected to the side wall of the storm drain chamber via a spring. As the water volume increases, the impact of the water on the filter screen will increase the elongation of the spring and increase the amount of rainwater overflowing from the filter screen, thereby coping with heavy rainfall. This solution only achieves the function of rapid drainage, but the external structure of the storm drain is mostly a cast-in-place concrete structure, which has the problems of lack of permeability and poor ecological compatibility. Utility Model Content

[0004] Purpose of the utility model: The purpose of this utility model is to provide a park drainage ditch to solve the problem of poor ecological compatibility of existing drainage ditches.

[0005] Technical solution: The park drainage ditch of this utility model includes a basic section. The upper half of the basic section is a planting area and a drainage area, and the lower half forms a water collection trough. The drainage area and the planting area are separated by a partition. A support plate is provided at the waist of the planting area. The support plate and the partition form a cavity for accommodating plants. At least one side wall of the cavity is a filling plate. The filling plate has a water-permeable grid or pores.

[0006] Preferably, in order to improve water retention and slow-release capabilities, the grid or pores of the filling plate are filled with high-density sponge.

[0007] Preferably, in order to ensure drainage performance and reduce soil erosion, a planting box is provided in the receiving cavity. The box body is a grid box, and the box body is filled with a coarse aggregate layer, a pebble layer, a gravel layer and a planting layer in sequence from low to high.

[0008] Preferably, the planting area is twice the size of the drainage area.

[0009] Preferably, the waist of the planting area is provided with a transverse groove, and the two sides of the support plate are detachably connected to the basic section through the groove.

[0010] Preferably, the upper surface of the support plate is provided with an anti-seepage coating.

[0011] Preferably, the drainage area opening is provided with a water funnel, the bottom of the water funnel is inclined, the relatively higher side of the bottom of the water funnel is rotatably connected to the side wall of the drainage area and is provided with a torsion spring, and the side wall of the relatively lower side of the bottom is provided with a grid or pores.

[0012] Preferably, a filter screen is provided inside the water collection tank and / or at both ends, and the support plate is located between the filter screen and the partition.

[0013] Preferably, the sidewall of the drainage area is provided with a limiting member to restrict the opening of the drain bucket.

[0014] Preferably, the water funnel and the side wall of the drainage area are rotatably connected by a hinge, and the hinge is provided with a torsion spring.

[0015] Preferably, the hinges and torsion springs are coated with a corrosion-resistant layer.

[0016] Beneficial Effects: Compared with existing technologies, this utility model has the following advantages: 1. Good ecological compatibility and sustainable use: By improving the basic section structure, the sidewalls of the drainage ditch are made permeable. After the plants are planted in the cavity, the sidewalls of the basic section can seep out excess water and supply it to the adjacent soil, thus improving ecological compatibility; 2. Reduced soil erosion: The permeable planting area is accompanied by soil loss with the flow of water. This problem is solved by setting up sponges and filling layers of different particle sizes in the box, while improving the slow-release performance and water retention performance of the drainage ditch; 3. The planting area accounts for 66% of the total length of the ditch (2:1 storage-drainage ratio). During normal rainfall or drought periods, the water storage capacity of the layered planting boxes is increased, which increases the soil moisture content of the surrounding green space; 4. The detachable planting boxes support seasonal vegetation replacement and enhance landscape diversity; 5. Simple structure and easy to modify. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the basic section and the assembly state of the planting box of this utility model;

[0018] Figure 2 This is a schematic diagram of the basic drainage zone closed state structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the planting box structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the basic planting area drainage principle of this utility model;

[0021] Figure 5 for Figure 1 The structure shown is a side sectional view.

[0022] Figure 6 This is a schematic diagram of the basic drainage zone of this utility model under stress and in the open state.

[0023] Figure 7 for Figure 6 The structure shown is a side sectional view. Detailed Implementation

[0024] The technical solution of this utility model will be further described below with reference to the accompanying drawings.

[0025] like Figures 1 to 2 As shown, this utility model discloses a park drainage ditch. The drainage ditch is formed by several basic sections 1 connected in series. The basic section 1 has a groove structure with an opening at the top and an inverted trapezoidal longitudinal section. The upper half of the basic section 1 near the opening is divided into a planting area and a drainage area with an area ratio of 2:1 to improve water storage capacity. The remaining lower half is not distinguished and is a continuous water collection trough 15. The water collection trough 15 allows water entering the middle drainage area to drain smoothly. The water collection trough 15 has filters 11 inside and at both ends. During drainage, the filters 11 intercept foreign objects a second time to prevent the drainage ditch from becoming blocked. The planting area and the drainage area are separated by a partition 3. A support plate 16 is provided in the middle of the planting area (below the partition 3 and above the filters 11). The support plate 16, the partition 3, and the side wall of the basic section 1 form a receiving cavity for planting plants or placing planting boxes 2. The support plate 16 and the side wall of the basic section 1 are slidably connected. The support plate 16 can slide along the length of the basic section 1. Specifically, a transverse groove 17 is prefabricated on the side wall of the basic section 1, and the side of the support plate 16 extends into the groove. The support plate 16 is made of resin material, and the side near the planting box 2 is coated with an epoxy resin anti-seepage coating 10. The anti-seepage coating 10 is about 0.5 mm thick to improve the durability of the support plate 16, prevent water seepage, and enhance the resistance to plant root penetration. At least one side wall of the receiving cavity is made of a filling plate 5. The filling plate 5 has a water-permeable grid or pores. The inside of the grid or pores can be filled with a high-density sponge with good water absorption and slow-release properties. The filling plate 5 itself or in combination with the sponge forms a drainage layer. After the plants are planted in the receiving cavity, if... Figure 4 Excess water in the containment cavity can seep out directionally from the filling plate 5. For example... Figure 3 To facilitate changing the types of plants in the planting area, a planting box 2 is provided inside the cavity. The box body 14 of the planting box 2 is a resin mesh box. The mesh structure helps to drain excess water from inside the planting box 2. The drained water is directed to replenish the surrounding green space or enter the garden rainwater pipe network from the side of the drainage ditch.

[0026] like Figure 5The container 14 is filled from bottom to top with a coarse aggregate layer 9, a pebble layer 8, a gravel layer 7, and a planting layer 6. The coarse aggregate layer 9 serves as the filling substrate, acting as a load-bearing framework and providing pore water retention. It can be made from recycled crushed concrete construction waste with a particle size controlled between 40-70mm. The pebble layer 8 and the gravel layer 7 are combined as a transition layer. The pebble layer 8 has a particle size of approximately 10-20mm, and the gravel layer 7 has a particle size of approximately 5-10mm. This combined layer effectively accelerates rainwater infiltration, reduces peak flow, and retains planting soil to prevent soil loss and blockage of the lower layers. The planting layer 6 includes a covering planting soil with a loam:organic matter ratio of 7:3 and a thickness of ≥300mm. It is planted with moisture-tolerant landscape plants 12, whose root systems enhance pollutant degradation.

[0027] A drainage hopper 19 is installed at the inlet of the drainage area. The bottom of the drainage hopper 19 is inclined, and the side wall with a relatively low bottom (relatively large side wall height) has grooves. The size of the grooves is reduced to form a filter screen 13, or a filter screen 13 is covered on the grooves. The side wall with a relatively high bottom (relatively small side wall height) is rotatably connected to the side wall of the basic section by a hinge 18. The hinge 18 has a torsion spring. When the upper surface of the drainage hopper 19 is subjected to the impact of heavy rainfall and the weight of accumulated rainwater (the water depth in the hopper reaches the design threshold ≥150mm), such as... Figure 6 , Figure 7 The drain hopper 19 can overcome the torque of the torsion spring and rotate downwards, increasing the opening of the side wall slots of the drain hopper 19. During peak rainfall periods, this allows for rapid drainage. After the water is drained, the torsion spring drives the drain hopper 19 to reset, closing the drainage area inlet and restoring the water storage state. An automatic torsion spring positioning hinge 18 and a corrosion-resistant coating can be applied to the torsion spring to extend its service life. A limiting element 4 can be installed in the middle of the side wall of the drainage area to restrict the opening of the drain hopper 19 and reduce the amount of solids trapped by the drain hopper 19 entering the collection tank 15.

[0028] When in use, there are three working conditions: (1) Normal water level (less rainfall) working condition: the water hopper 19 is in the horizontal locking position, and the rainwater stored in the planting box continuously seeps out through the permeable grid to replenish the greening; (2) Rainstorm working condition: when the water volume of the water hopper 19 exceeds the threshold, it automatically rotates to discharge floodwater and avoid overflow at the top of the ditch. At the same time, the layered structure of the planting box accelerates the infiltration of rainwater and reduces the peak flow; (3) Rain stop (sunny or cloudy) working condition: the water hopper 19 is closed by the torsion spring, and the planting box 2 continues to play the role of storage.

[0029] It should be noted that a simulated rainfall test must be arranged after installation. The test method is to use quantitative spraying or water injection to simulate rainfall events of different intensities, and observe and record the response and performance of the entire system. The rainfall test is conducted to verify: 1. Drainage smoothness: observe whether the water flow can smoothly pass through the drainage layer and the collection tank 15, and finally drain into the inspection well; 2. Function of the water funnel 19: focus on testing whether the water funnel 19 can open smoothly under the impact of simulated water flow to ensure unobstructed drainage; after the water flow stops, check whether it can reliably and completely automatically reset under the action of the torsion spring.

Claims

1. A park drainage channel comprising basic segments (1), characterized in that, The upper part of the basic section (1) is a planting area and a drainage area, and the lower part forms a water collection trough (15). The drainage area and the planting area are separated by a partition (3). The planting area is provided with a support plate (16) at the waist. The support plate (16) and the partition (3) form a container cavity for accommodating plants. At least one side wall of the container cavity is a filling plate (5). The filling plate (5) has a grid or pores that can be permeable to water.

2. The park gutter according to claim 1, characterized in that The grid or pores of the filling plate (5) are filled with high-density sponge.

3. The park gutter according to claim 1 or 2, characterized in that The cavity is equipped with a planting box (2), and the box body (14) of the planting box (2) is a grid box. The box body (14) is filled with a coarse aggregate layer (9), a pebble layer (8), a gravel layer (7), and a planting layer (6) in sequence from low to high.

4. The park gutter according to claim 1, wherein The planting area is twice the size of the drainage area.

5. The parkway gutter according to claim 1, wherein The waist of the planting area is provided with a horizontal groove (17), and the two sides of the support plate (16) are detachably connected to the basic section (1) through the groove (17).

6. The park drainage ditch according to claim 1, characterized in that, The upper surface of the support plate (16) is provided with an anti-seepage coating (10).

7. The park drainage ditch according to claim 1, characterized in that, The drainage area opening is provided with a water funnel (19), the bottom of the water funnel (19) is inclined, the relatively higher side of the bottom of the water funnel (19) is rotatably connected to the side wall of the drainage area and is provided with a torsion spring, and the side wall of the relatively lower side of the bottom is provided with a grid or pores.

8. The park drainage ditch according to claim 7, characterized in that, The water collection tank (15) is equipped with a filter screen (11) inside and / or at both ends, and the support plate is located between the filter screen (11) and the partition plate (3).

9. The park drainage ditch according to claim 7, characterized in that, The side wall of the drainage area is provided with a limiting member (4) to restrict the opening of the water funnel (19).

10. The park drainage ditch according to claim 7, characterized in that, The water funnel (19) and the side wall of the drainage area are rotatably connected by a hinge (18). The hinge (18) is provided with a torsion spring, and the hinge (18) and the torsion spring are coated with a corrosion-resistant layer.

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