Integrated drainage structure of interception and overflow

Abstract

This disclosure provides an integrated interception and overflow drainage structure, including a storm drain well positioned adjacent to a green belt; a curbstone positioned between the storm drain well and the green belt, having an opening extending from the storm drain well toward the green belt; and an interception and overflow channel connected to the opening and surrounding at least a portion of the edge of the storm drain well. The interception and overflow channel is configured to intercept water flow, guiding some of the water flow into the green belt and overflowing some water flow into the storm drain well. This technical solution, by setting an interception and overflow channel surrounding at least a portion of the edge of the storm drain well, intercepts initial rainwater runoff from the road surface during rainfall and directs it to the green belt for absorption. As the water level on the road surface rises, the water overflowing from the interception and overflow channel enters the storm drain well for rapid discharge, effectively achieving the interception of initial rainwater and the rapid discharge of subsequent rainwater, thus solving the problems of initial rainwater pollution and urban flooding.

Description

Technical Field

[0001] This disclosure relates to the field of urban drainage technology, and in particular to an integrated interception and overflow drainage structure. Background Technology

[0002] Traditional storm drains are a crucial component of urban drainage systems, primarily used to collect rainwater from roads, plazas, and other areas, and promptly discharge it through underground drainage networks to prevent surface flooding and waterlogging. Their built-in grilles or filters effectively filter debris and sediment, preventing pipe blockages and reducing rainwater erosion of roads, thus extending the lifespan of infrastructure. Furthermore, storm drains improve environmental sanitation, enhance traffic safety, and, to some extent, replenish groundwater resources through rainwater infiltration. During heavy rains, traditional storm drains play a vital role in flood control and disaster mitigation through rapid drainage, ensuring the normal operation of the city and the safety of residents. Therefore, traditional storm drains have an irreplaceable function in urban stormwater management and flood control.

[0003] However, traditional storm drains have a single function, only used for rapid drainage, and cannot simultaneously address initial stormwater pollution and urban flooding. With the acceleration of urbanization, the concept of initial stormwater interception has been proposed, but the separation of interception facilities from storm drains increases system complexity and cost. Utility Model Content

[0004] One of the technical problems this disclosure aims to solve is: how to achieve the interception of initial rainwater and the rapid discharge of subsequent rainwater.

[0005] To solve the above-mentioned technical problems, this utility model provides an integrated interception and overflow drainage structure including a rainwater well, which is located adjacent to a green belt; a curbstone, which is located between the rainwater well and the green belt and has an opening extending from the rainwater well toward the green belt; and an interception and overflow channel, which is connected to the opening and surrounds at least a portion of the edge of the rainwater well. The interception and overflow channel is configured to intercept water flow to guide part of the water flow into the green belt and overflow part of the water flow into the rainwater well.

[0006] In some embodiments, the overflow channel and the curbstone form a closed structure surrounding the storm drain.

[0007] In some embodiments, the storm drain includes masonry and a concrete capping on top of the masonry.

[0008] In some embodiments, a rainwater grate is provided at the inlet of the rainwater well, and the rainwater grate and the overflow interception trough are placed on the top surface of the concrete capping.

[0009] In some embodiments, the concrete capping includes a first support portion surrounding the inlet of the storm drain and a second support portion located on the outer periphery of the first support portion, a storm drain grate placed on the top surface of the first support portion, and an overflow interceptor placed on the top surface of the second support portion; wherein the top surface of the first support portion is higher than the top surface of the second support portion, and the top surfaces of the storm drain grate and the overflow interceptor are located on the same plane.

[0010] In some embodiments, a connecting angle steel is provided between the overflow trough and the concrete capping. One side of the connecting angle steel is fixed to the overflow trough, and the other side is fixed to the concrete capping by expansion bolts.

[0011] In some embodiments, the rain grate includes a frame for placement on a concrete coping and a plurality of parallel grilles disposed within the frame.

[0012] In some embodiments, the rain grate also includes reinforcing ribs disposed within the frame and perpendicular to the multi-grid.

[0013] In some embodiments, the drainage structure includes a cover plate installed on top of the overflow trough, the cover plate having a plurality of water inlets.

[0014] In some embodiments, a plurality of cover plate supports are provided in the overflow trough for supporting the cover plate, and the plurality of cover plate supports are spaced apart along the extension direction of the overflow trough.

[0015] Through the above technical solution, the integrated interception and overflow drainage structure provided in this disclosure intercepts the initial rainwater from the road surface into the green belt for absorption and disposal by setting an interception and overflow trough around at least part of the edge of the rainwater well. As the water level on the road surface rises, the water overflowing from the interception and overflow trough enters the rainwater well for rapid discharge, effectively realizing the interception of initial rainwater and the rapid discharge of subsequent rainwater, thus solving the problems of initial rainwater pollution and urban flooding. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a cross-sectional schematic diagram of the drainage structure disclosed in the embodiments of this disclosure;

[0018] Figure 2 This is a partial cross-sectional schematic diagram of the drainage structure disclosed in the embodiments of this disclosure;

[0019] Figure 3This is a top view schematic diagram of the drainage structure disclosed in the embodiments of this disclosure;

[0020] Figure 4 This is a top view schematic diagram showing the rain grate and the overflow interception channel disclosed in this embodiment;

[0021] Figure 5 This is a top view of the overflow trough with the cover plate omitted, as disclosed in this embodiment of the invention.

[0022] Figure 6 This is the embodiment disclosed in this disclosure. Figure 5 The 1-1 cross-sectional view shown;

[0023] Figure 7 This is a schematic diagram of the structure of the cover plate disclosed in this embodiment;

[0024] Figure 8 This is a schematic diagram of the structure of a rain grate as disclosed in an embodiment of this disclosure;

[0025] Figure 9 This is the embodiment disclosed in this disclosure. Figure 8 Section 2-2 shown in the figure;

[0026] Figure 10 This is the embodiment disclosed in this disclosure. Figure 8 The 3-3 cross-sectional view shown.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Rainwater well; 101. Masonry; 102. Concrete capping; 103. First bearing section; 104. Second bearing section; 2. Interception overflow channel; 201. Cover plate; 202. Inlet hole; 203. Cover plate support; 204. Channel body; 205. Channel opening; 206. Support strip; 3. Curbstone; 4. Opening; 5. Green belt; 6. Rainwater grate; 601. Frame; 602. Grating; 603. Reinforcing rib; 7. Connecting angle steel; 8. Expansion bolt; 9. Road; 10. Concrete subbase; 11. Gravel layer; 12. Foundation. Detailed Implementation

[0029] The embodiments of this disclosure will be further described in detail below with reference to the accompanying drawings and examples. The detailed description of the embodiments and the accompanying drawings are used to illustrate the principles of this disclosure by way of example, but should not be used to limit the scope of this disclosure. This disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0030] These embodiments are provided to make the disclosure thorough and complete, and to fully express the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, material composition, numerical expressions, and values ​​set forth in these embodiments should be interpreted as exemplary only and not as limiting.

[0031] It should be noted that, in the description of this disclosure, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationship, are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0032] Furthermore, the terms "first," "second," and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. "Vertical" is not strictly vertical, but within the permissible margin of error. "Parallel" is not strictly parallel, but within the permissible margin of error. Terms such as "including" or "contains" mean that the element preceding the word encompasses the element listed after the word, and do not exclude the possibility of encompassing other elements as well.

[0033] It should also be noted that, in the description of this disclosure, unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this disclosure depending on the specific circumstances. When a particular device is described as being located between a first device and a second device, an intermediary device may or may not be present between the particular device and the first or second device.

[0034] All terms used in this disclosure have the same meaning as understood by one of ordinary skill in the art to which this disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and not as idealized or highly formalized, unless expressly defined herein.

[0035] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0036] like Figures 1-10 As shown, this utility model provides an integrated interception and overflow drainage structure, including: a rainwater well 1, which is located adjacent to a green belt 5; a curbstone 3, which is located between the rainwater well 1 and the green belt 5 and has an opening 4 extending from the rainwater well 1 toward the green belt 5; and an interception and overflow channel 2, which is connected to the opening 4 and surrounds at least a portion of the edge of the rainwater well 1. The interception and overflow channel 2 is configured to intercept water flow to guide part of the water flow into the green belt 5 and overflow part of the water flow into the rainwater well 1.

[0037] Specifically, such as Figure 1 and Figure 3 As shown, under normal circumstances, the drainage structure is set at the edge of the road 9 near the green belt 5. The surface of the road 9 has a slope to guide water flow into the rainwater well 1. When the road surface water flows into the rainwater well 1 from only one side or part of the edge, the interception overflow trough 2 can be set only at the corresponding edge of the rainwater well 1, or the interception overflow trough 2 can be set in a closed manner around the edge of the rainwater well 1 to ensure the interception and overflow effect. Taking the treatment of rainwater on the road surface 9 during rainfall as an example, in the initial stage of rainfall, the polluted rainwater washing over the road 9 first enters the intercepting overflow trough 2, which is set around the inlet of the rainwater well 1, when it flows towards the drainage structure. Since the water volume is small in the early stage of rainfall, the sewage is guided by the intercepting overflow trough 2 and enters the green belt 5 through the opening 4 of the curb 3. The green belt 5 absorbs and dissipates the initial polluted rainwater, preventing the initial sewage from directly entering the rainwater well 1. As the rainfall continues, the water volume on the road 9 increases, and the water level in the intercepting overflow trough 2 gradually rises until it overflows. The rainwater overflowing from the intercepting overflow trough 2 flows into the rainwater well 1 for rapid discharge. With the help of the intercepting overflow trough 2 set around the edge of the rainwater well 1, the drainage structure effectively intercepts the initial polluted rainwater and rapidly discharges the clean rainwater in the later stage, solving the problems of initial rainwater pollution and urban flooding.

[0038] In some embodiments, the green belt 5 is provided with a pebble energy dissipation trough composed of natural pebbles or artificially crushed pebbles. The friction and collision between the pebbles consume the kinetic energy of the water flow, reduce the flow velocity, and reduce the scouring effect on the green belt 5.

[0039] like Figure 3 As shown, in some embodiments, the overflow trough 2 and the curbstone 3 form a closed structure surrounding the rainwater well 1.

[0040] Specifically, because the intercepting overflow trough 2 and the curbstone 3 form a closed structure surrounding the storm drain 1, rainwater from road 9 must first enter the intercepting overflow trough 2, and then be intercepted and flow into the green belt 5 or overflow into the storm drain 1. This effectively prevents initial polluted rainwater from entering the storm drain 1 and ensures the diversion effect of the drainage structure. Figure 3For example, a rectangular cross-section rainwater well 1 has one long side parallel to and close to the curb 3, positioned at the edge of the road 9. An intercepting overflow trough 2 surrounds the remaining three sides of the rainwater well 1. Openings 4 connecting to the green belt 5 are provided at both points where the curb 3 intersects with the intercepting overflow trough 2, ensuring that initial sewage can smoothly enter the green belt 5. In other embodiments, the intercepting overflow trough 2 can also form a closed structure surrounding the rainwater well 1 independently, with a channel from the intercepting overflow trough 2 to the opening 4 to complete the interception of initial rainwater (e.g., when the rainwater well 1 is located away from the curb 3).

[0041] like Figure 1 and Figure 2 As shown, in some embodiments, the rainwater well 1 includes a masonry 101 and a concrete capping 102 located on top of the masonry 101.

[0042] Specifically, the lower structure of the rainwater well 1 is masonry 101, which can effectively reduce the construction cost of the rainwater well 1 and flexibly control the size of the rainwater well 1. A concrete capping 102 is set on the top of the masonry 101. On the one hand, it is used to press down the masonry 101 to prevent the masonry 101 from loosening under the impact of water flow, so as to enhance the integrity and stability of the rainwater well 1. On the other hand, the concrete capping 102 has a flat top surface compared with the masonry structure, which makes it easy to install subsequent facilities such as rainwater grate 6 or intercepting overflow channel 2 on its top surface.

[0043] like Figure 1 As shown, in some embodiments, the masonry 101 of the rainwater well 1 is built on a concrete cushion 10, and a pebble layer 11 is provided between the concrete cushion 10 and the foundation 12. The pebble layer 11 has good water conductivity and can quickly drain rainwater that seeps downward through the concrete cushion 10, preventing water from accumulating on the contact surface between the concrete cushion 10 and the foundation 12, which could cause the foundation to soften and lead to uneven settlement. The concrete cushion 10 can provide a flat and solid working surface for the masonry 101, facilitating the construction of the masonry 101.

[0044] like Figure 1 and Figure 2 As shown, in some embodiments, a rainwater grate 6 is provided at the inlet of the rainwater well 1, and the rainwater grate 6 and the overflow interception channel 2 are placed on the top surface of the concrete capping 102.

[0045] Specifically, the storm drain grate 6, installed at the inlet of the storm drain 1, filters the water flowing into the storm drain 1, preventing large debris from being carried directly into the storm drain 1 by the water flow when the surface water level of the road 9 is high. It also provides a stable support surface for road 9, ensuring traffic safety. The overflow trough 2 is located on the outer periphery of the storm drain grate 6. Rainwater overflowing from the overflow trough 2 is intercepted by the storm drain grate 6 before entering the storm drain 1. Both the overflow trough 2 and the storm drain grate 6 can be made of cast iron to withstand the pressure of road vehicles.

[0046] like Figure 1 and Figure 2 As shown, in some embodiments, the concrete capping 102 includes a first support portion 103 surrounding the inlet of the rainwater well 1 and a second support portion 104 located on the outer periphery of the first support portion 103. The rainwater grate 6 is placed on the top surface of the first support portion 103, and the overflow trough 2 is placed on the top surface of the second support portion 104. The top surface of the first support portion 103 is higher than the top surface of the second support portion 104, and the top surfaces of the rainwater grate 6 and the overflow trough 2 are located on the same plane.

[0047] Specifically, the first supporting part 103 and the second supporting part 104 are integrally cast. The top surfaces of the rainwater grate 6 and the intercepting overflow channel 2 are flush with the road surface to ensure a smooth road surface. The rainwater grate 6 is placed on the top surface of the first supporting part 103, and the bottom of the intercepting overflow channel 2 is attached to the top surface of the second supporting part 104. Due to the height difference between the first supporting part 103 and the second supporting part 104, rainwater flowing into the drainage structure from the road surface 9 can be intercepted by the intercepting overflow channel 2 first, and then flow into the green belt 5 through the openings 4 on the curbstone 3, thus completing the interception of initial sewage. As the amount of water entering the intercepting overflow channel 2 increases, the water level in the channel gradually rises to exceed the top surface of the rainwater grate 6, and the excess rainwater overflows into the rainwater well 1 for rapid discharge. Furthermore, the intercepting overflow channel 2 and the rainwater grate 6 are independent of each other, and any component can be repaired or disassembled and replaced.

[0048] like Figure 6 As shown, in some embodiments, the intercepting overflow channel 2 includes a channel body 204 located at the lower part and a channel opening 205 located at the upper part. The cross-sectional shape of both the channel body 204 and the channel opening 205 is rectangular. The channel opening 205 adopts a small cross-section to reduce the impact on the road surface, while the channel body 204 adopts a large cross-section to increase the capacity of the intercepting overflow channel 2.

[0049] like Figure 5 and Figure 6 As shown, in some embodiments, the overflow trough 2 is provided with a support strip 206 for placing on the top surface of the first support part 103. When installing the overflow trough 2 and the rain grate 6, the overflow trough 2 is first placed on the top surface of the concrete capping 102, wherein the bottom surface of the trough body 204 is attached to the top surface of the second support part 104, and the bottom surface of the support strip 206 is attached to the top surface of the first support part 103. Then, the rain grate 6 is placed on the support strip 206 to press the overflow trough 2 tightly onto the upper surface of the concrete capping 102, ensuring the stability of the drainage structure. Moreover, the overflow trough 2 and the rain grate 6 are independent of each other, and any component can be repaired or replaced individually, effectively reducing the maintenance cost of the drainage structure.

[0050] like Figure 1 and Figure 2 As shown, in some embodiments, a connecting angle steel 7 is provided between the overflow trough 2 and the concrete capping 102. One side of the connecting angle steel 7 is fixed to the overflow trough 2, and the other side is fixed to the concrete capping 102 by expansion bolts 8.

[0051] Specifically, the overflow trough 2 is usually made of cast iron. One side of the connecting angle steel 7 can be directly welded to the outer surface of the trough body 204, and the other side is fixed to the top surface of the second bearing part 104 by expansion bolts 8, so that the overflow trough 2 is stably connected to the concrete capping 102.

[0052] like Figure 1 , Figure 3 , Figure 4 ,as well as Figures 8-10 As shown, in some embodiments, the rain grate 6 includes a frame 601 for placement on a concrete capping 102 and a plurality of parallel grids 602 disposed within the frame 601.

[0053] Specifically, the frame 601, as the outer structure of the rain grate 6, is placed on the top surface of the first bearing part 103 of the concrete capping 102 and forms a fixed fit with the groove 205 of the overflow channel 2 to provide support and fixation. Simultaneously, the frame 601 can distribute and transfer the road load to the concrete capping 102, which is beneficial to the stress distribution of the drainage structure. The grille 602, as the internal structure of the rain grate 6, adopts multiple parallel strip structures, which can both drain water quickly and intercept large debris. In other embodiments, the grille 602 can also adopt a mesh structure.

[0054] In some embodiments, the frame 601 is placed on the support strip 206 of the overflow trough 2, wherein the opposing surfaces of the frame 601 and the support strip 206 may be provided with mutually cooperating protrusions and grooves to improve the stability of the drainage structure after installation.

[0055] like Figure 8 , Figure 9 and Figure 10 As shown, in some embodiments, the rain grate 6 further includes reinforcing ribs 603 disposed within the frame 601 and perpendicular to the multi-grid 602. Specifically, the reinforcing ribs 603 are perpendicular to the strip structure of the grid 602 and located below the grid 602, with both ends connected to the frame 601 to enhance the load-bearing capacity of the rain grate 6.

[0056] like Figure 4 , Figure 6 and Figure 7 As shown, in some embodiments, the drainage structure includes a cover plate 201 installed on the top of the overflow trough 2, and the cover plate 201 is provided with a plurality of water inlet holes 202.

[0057] Specifically, the cover plate 201 is installed on top of the slot 205, and its upper surface is on the same plane as the upper surface of the rain grate 6, so that the upper surface of the entire drainage structure is flush with the road surface. The water inlet hole 202 is used to filter large-volume debris in the initial rainwater to avoid clogging of the intercepting overflow channel 2 or the opening 4.

[0058] like Figure 5 and Figure 6 As shown, in some embodiments, the overflow trough 2 is provided with a plurality of cover plate supports 203 for supporting the cover plate 201, and the plurality of cover plate supports 203 are placed at intervals along the extension direction of the overflow trough 2.

[0059] Specifically, the cover plate 201 is a flat plate structure, and the cover plate support member 203 is a stiffening piece that is perpendicular to the cover plate 201 and disposed in the slot 205. The lower surface of the cover plate 201 is directly attached to the top of the multiple cover plate supports 203 to be placed on the slot 205. In other embodiments, the cover plate 201 may also be a groove-shaped structure with the opening facing downwards, and the cover plate support member 203 is a short crossbeam disposed in the slot 205 perpendicular to the extension direction of the overflow channel 2. The bottom of the cover plate 201 is placed on the cover plate support member 203, and its two sides are fitted into the inner wall of the slot 205.

[0060] The embodiments of this disclosure have now been described in detail. To avoid obscuring the concept of this disclosure, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0061] While specific embodiments of this disclosure have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of this disclosure. Those skilled in the art should understand that modifications can be made to the above embodiments or equivalent substitutions can be made to some technical features without departing from the scope and spirit of this disclosure. In particular, as long as there is no structural conflict, the technical features mentioned in the various embodiments can be combined in any manner.

Claims

1. A combined interception and overflow drainage structure, characterized in that, include: Rainwater well (1), wherein the rainwater well (1) is located adjacent to the green belt (5); A curbstone (3) is disposed between the storm drain (1) and the green belt (5) and has an opening (4) extending from the storm drain (1) toward the green belt (5); as well as An overflow interceptor (2) is connected to the opening (4) and surrounds at least a portion of the edge of the rainwater well (1). The overflow interceptor (2) is configured to intercept water flow to guide a portion of the water flow into the green belt (5) and overflow a portion of the water flow into the rainwater well (1).

2. The integrated interception and overflow drainage structure according to claim 1, characterized in that, The overflow trough (2) and the curbstone (3) form a closed structure surrounding the rainwater well (1).

3. The integrated interception and overflow drainage structure according to claim 1, characterized in that, The rainwater well (1) includes masonry (101) and a concrete capping (102) located on top of the masonry (101).

4. The integrated interception and overflow drainage structure according to claim 3, characterized in that, The rainwater well (1) is provided with a rainwater grate (6) at its inlet, and the rainwater grate (6) and the overflow interception channel (2) are placed on the top surface of the concrete capping (102).

5. The integrated interception and overflow drainage structure according to claim 4, characterized in that, The concrete capping (102) includes a first support part (103) surrounding the inlet of the rainwater well (1) and a second support part (104) located on the outer periphery of the first support part (103). The rainwater grate (6) is placed on the top surface of the first support part (103), and the overflow interception channel (2) is placed on the top surface of the second support part (104). The top surface of the first support part (103) is higher than the top surface of the second support part (104), and the top surfaces of the rainwater grate (6) and the overflow trough (2) are located on the same plane.

6. The integrated interception and overflow drainage structure according to claim 4, characterized in that, A connecting angle steel (7) is provided between the overflow trough (2) and the concrete capping (102). One side of the connecting angle steel (7) is fixed to the overflow trough (2), and the other side is fixed to the concrete capping (102) by expansion bolts (8).

7. The integrated interception and overflow drainage structure according to claim 4, characterized in that, The rain grate (6) includes a frame (601) for placement on the concrete capping (102) and a plurality of parallel grids (602) disposed within the frame (601).

8. The integrated interception and overflow drainage structure according to claim 7, characterized in that, The rain grate (6) also includes reinforcing ribs (603) disposed within the frame (601) and perpendicular to the multiple grilles (602).

9. The integrated interception and overflow drainage structure according to claim 4, characterized in that, The drainage structure includes a cover plate (201) installed on the top of the intercepting overflow trough (2), and the cover plate (201) is provided with a plurality of water inlet holes (202).

10. The integrated interception and overflow drainage structure according to claim 9, characterized in that, The overflow trough (2) is provided with a plurality of cover plate supports (203) for supporting the cover plate (201), and the plurality of cover plate supports (203) are placed at intervals along the extension direction of the overflow trough (2).

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