Building rainfall drainage structure

Abstract

The utility model discloses a building rainfall drainage structure, which relates to the technical field of building drainage and comprises a connecting pipe, a flow guide disc is mounted at the top of the connecting pipe, a support ring frame is mounted at the top of the flow guide disc, and an inner ring of the support ring frame and an inner ring of the flow guide disc are coaxial and correspond to each other; the inner ring of the supporting ring frame and the inner ring of the flow guide disc are jointly and movably sleeved with a grating assembly, and water flow penetrates through the side wall of the grating assembly from the position between the supporting ring frame and the flow guide disc to flow into the connecting pipe. The air bag floats upwards to push the grating assembly to rise to open the space between the supporting ring frame and the top of the flow guide disc. Each lifting motion of the grating assembly is equivalent to an automatic carding process, flexible sundries clamped in gaps of the grating can be effectively removed, the blocking risk is remarkably reduced, and the manual cleaning frequency and the maintenance cost are reduced.

Description

Technical Field

[0001] This utility model relates to the field of building drainage technology, specifically a building rainwater drainage structure. Background Technology

[0002] When draining water from the sewer inlets of urban buildings, drainage structures are usually installed at the inlets of the sewer pipes. Among these, the commonly used drainage structures include flow-regulating grilles, which can quickly drain rainwater from the ground. The grilles also have a flow-regulating effect, preventing the formation of excessively large vortices, stabilizing the water level at the sewer pipes, and effectively blocking larger debris. They are widely used in the construction industry. However, these grille structures are easily clogged by silt or debris when intercepting impurities, affecting drainage efficiency. Therefore, we propose a building rainwater drainage structure. Utility Model Content

[0003] This utility model provides a building rainwater drainage structure that solves the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: a building rainwater drainage structure, including a connecting pipe, a guide plate installed on the top of the connecting pipe, a support ring frame installed on the top of the guide plate, and the inner ring of the support ring frame being coaxial and corresponding to the inner ring of the guide plate;

[0005] The inner ring of the support ring and the inner ring of the guide plate are movably fitted with a grid assembly, and the water flows from between the support ring and the guide plate through the side wall of the grid assembly into the interior of the connecting pipe.

[0006] An airbag is installed on the grille assembly. The airbag can float up to push the grille assembly to open up the space between the support ring frame and the top of the guide plate.

[0007] Preferably, the grille assembly includes a grille cylinder and a top layer frame;

[0008] The grid tube is installed in the middle of the bottom of the top layer frame, and the bottom end of the grid tube extends into the interior of the connecting pipe and contacts the inner wall of the connecting pipe.

[0009] A spare drainage assembly is provided in the middle of the top of the top layer frame.

[0010] Preferably, the airbag is installed on the outer ring at the bottom of the top layer frame;

[0011] The outer circumferential array of the grid cylinder has grid grooves, and the bottom of the grid grooves is open.

[0012] The bottom of the top layer frame overlaps the top of the support ring frame.

[0013] Preferably, an inner ring is installed on the inner ring at the top of the support ring frame, and comb teeth are installed in a row around the inner ring of the inner ring, with each comb tooth corresponding to a grid groove.

[0014] The bottom of the comb teeth is tapered, and the top layer frame is slidably connected within the grid groove.

[0015] Preferably, the inner ring of the guide plate has a tapered structure that gradually decreases in size downwards;

[0016] The top of the top shelf has an arc-shaped structure that gradually descends from the center outwards.

[0017] Preferably, a through hole is provided in the middle of the top end of the top layer frame;

[0018] The backup drain assembly is installed inside the through hole and is normally closed in the through hole.

[0019] Preferably, the backup drainage assembly includes a sealing plate, a spring, and a drainage seat;

[0020] The drain seat is installed at the bottom of the middle of the top layer frame and is located on the outer periphery of the through hole;

[0021] The sealing plate is slidably connected inside the drain seat, and the top of the sealing plate is arc-shaped and adapts to the top of the top shelf;

[0022] The upper and lower ends of the spring are respectively connected between the bottom of the sealing plate and the inner bottom of the drain seat;

[0023] The side wall of the drain seat is provided with a drain groove, and the through hole is connected to the interior of the grid cylinder through the drain groove.

[0024] This utility model has the following beneficial effects:

[0025] 1. The building's rainwater drainage structure, through the coordination of vertically floating grating components with supporting rings and guide plates, combined with airbags installed on the grating components, achieves dynamic adaptive adjustment of drainage capacity. During normal rainfall, the grating components are in a low position, performing a fine filtration function to intercept debris; when heavy rain causes water accumulation, the buoyancy of the airbags increases, automatically lifting the grating components, extending the water passage of the grating channels, improving drainage capacity, and effectively preventing water accumulation and flooding. The entire process requires no electricity or manual intervention, making it intelligent and reliable.

[0026] 2. The building's rainwater drainage structure, through the precise cooperation between the comb teeth on the support ring frame and the grid grooves on the grid cylinder, endows the structure with a self-cleaning function. Each lifting and lowering movement of the grid assembly is equivalent to an automatic combing process, effectively removing flexible debris stuck in the grid gaps, significantly reducing the risk of blockage, reducing the frequency of manual cleaning and maintenance costs. Furthermore, the bottom end of the grid assembly can rise to detach from the guide plate, allowing some silt to drain in case of complete blockage, ensuring smooth drainage. Simultaneously, a water pressure-controlled backup drainage component at the top provides a final emergency drainage guarantee in extreme situations, greatly improving the reliability of the entire drainage system. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of this utility model;

[0028] Figure 2 This is a schematic diagram of the cross-section of the present invention during installation;

[0029] Figure 3 This is a schematic diagram of the support ring frame connection structure of this utility model;

[0030] Figure 4 This utility model Figure 2 A schematic diagram of the structure at point A in the middle.

[0031] In the diagram: 1. Connecting pipe; 2. Guide plate; 3. Airbag; 4. Grille assembly; 41. Grille cylinder; 411. Grille groove; 42. Top layer frame; 5. Support ring frame; 51. Inner ring; 52. Comb teeth; 6. Spare drainage assembly; 61. Sealing plate; 62. Spring; 63. Drain seat; 631. Drain groove. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Please see Figures 1 to 4 A building rainwater drainage structure includes a connecting pipe 1, a guide plate 2 installed on the top of the connecting pipe 1, a support ring frame 5 installed on the top of the guide plate 2, and the inner ring of the support ring frame 5 being coaxial and corresponding to the inner ring of the guide plate 2.

[0034] The connecting pipe 1 is a vertically arranged pipe. Its top end is connected to the drainage outlet of the building's water collection surface, and its bottom end is connected to the underground drainage network. The guide plate 2 is fixedly installed at the top port of the connecting pipe 1. Its function is to collect and guide water from all directions to smoothly enter the connecting pipe 1. The support ring 5 is fixed to the top edge of the guide plate 2 to form a ring support platform.

[0035] The inner ring of the support ring 5 and the inner ring of the guide plate 2 are movably fitted with the grid assembly 4. The water flows from between the support ring 5 and the guide plate 2 through the side wall of the grid assembly 4 into the interior of the connecting pipe 1.

[0036] The grille assembly 4 is the core moving component of the entire structure. It is fitted within the annular space formed by the inner ring of the support ring frame 5 and the inner ring of the guide plate 2, and can move vertically up and down. In its normal state, the grille assembly 4 sits on the support ring frame 5, with its sidewalls serving as inlet grilles. Rainwater enters the interior through these inlet grilles and eventually flows into the connecting pipe 1. This design ensures that all water flow must be filtered, effectively intercepting large debris.

[0037] An airbag 3 is installed on the grille assembly 4. The airbag 3 floats up and pushes the grille assembly 4 to open the space between the support ring frame 5 and the top of the guide plate 2.

[0038] Airbag 3 is fixedly installed on the grille assembly 4, usually located at its lower part. When the rainfall intensity is low or in the early stage, the water volume is not large, and the water inlet grille around the grille assembly 4 is sufficient to meet the drainage needs. The buoyancy generated by the airbag 3 is insufficient to overcome the weight and friction of the grille assembly 4. At this time, the grille assembly 4 remains in the normal working position at the lower part.

[0039] As rainfall continues or the intensity increases, the depth of accumulated water increases. When the water reaches a certain height, the buoyancy acting on the airbag 3 increases accordingly. When the buoyancy overcomes the weight, friction, and possible resistance from debris in the grille assembly 4, the airbag 3 will lift the entire grille assembly 4 upwards. After the grille assembly 4 rises, its bottom will disengage from the top of the support ring 5, thereby increasing the water flow of the grille assembly 4 and significantly improving its water passage capacity. This allows for the rapid drainage of large amounts of accumulated water, effectively preventing flooding. This is the "dynamic adjustment" function of this utility model: fine filtration during light to moderate rain, automatic opening of large channels for flood discharge during heavy rain and water accumulation, and each lifting and lowering movement of the grille assembly 4 is equivalent to an automatic combing process, effectively removing flexible debris stuck in the grille gaps and significantly reducing the risk of blockage.

[0040] Please see Figures 1 to 4 The grille assembly 4 includes a grille cylinder 41 and a top layer frame 42;

[0041] The grid tube 41 is installed in the middle of the bottom of the top layer frame 42. The bottom end of the grid tube 41 extends into the interior of the connecting pipe 1 and contacts the inner wall of the connecting pipe 1.

[0042] A spare drain assembly 6 is located in the middle of the top of the top shelf 42.

[0043] This design divides the grille assembly 4 into upper and lower parts. The grille cylinder 41 is the main filtering and guiding component, with a filtering structure on its side wall and its bottom extending into the inner wall of the connecting pipe 1, serving as a vertical guide and restricting the grille assembly 4 to move only up and down, preventing horizontal swaying. The top shelf 42 acts as a top cover and guide support. At the same time, a spare drain assembly 6 is set at the top center of the top shelf 42 as an emergency drainage outlet in extreme situations.

[0044] Please see Figures 1 to 4 Airbag 3 is installed on the outer ring at the bottom of the top frame 42;

[0045] The outer circumferential array of the grid cylinder 41 has grid grooves 411, and the bottom of the grid grooves 411 is open.

[0046] The bottom of the top layer frame 42 overlaps the top of the support ring frame 5.

[0047] Airbag 3 is installed at the bottom outer ring of the top layer frame 42, allowing it to gain buoyancy and more effectively propel the entire assembly. The grille groove 411 on the grille cylinder 41 is the main water inlet filtration channel; its bottom opening design ensures that even if a small amount of sediment accumulates at the bottom of the groove, it can be flushed out by the water flow, providing a certain degree of self-cleaning capability. In normal operation, the bottom edge of the top layer frame 42 rests directly on the top surface of the support ring frame 5, forming a support.

[0048] Please see Figures 1 to 4 The inner ring 51 is installed on the inner ring at the top of the support ring frame 5. The inner ring 51 is circumferentially equipped with comb teeth 52, and the comb teeth 52 correspond one-to-one with the grid groove 411.

[0049] The bottom of the comb teeth 52 is conical, and the top layer frame 42 is slidably connected in the grid groove 411.

[0050] The inner ring 51 is fixed to the support ring frame 5, and its comb teeth 52 are precisely inserted into the grid grooves 411 of the grid cylinder 41. When the grid assembly 4 rises under the action of the airbag 3 or falls back due to gravity after the water level drops, there will be relative movement between the grid cylinder 41 and the comb teeth 52. The conical bottom of the comb teeth 52 can act like a comb to peel off and push out flexible debris such as leaves and fibers stuck in the grid grooves 411, thereby automatically cleaning the grid gaps during structural movement and greatly reducing the probability of blockage. The sliding connection between the top layer frame 42 and the top of the comb teeth 52 also provides vertical guidance.

[0051] Please see Figures 1 to 4 The inner ring of the guide plate 2 has a tapered structure that gradually decreases in size downwards;

[0052] The top of the top shelf 42 has an arc-shaped structure that gradually descends from the middle to the outer edge.

[0053] The conical inner ring of the guide plate 2 helps to smoothly guide the water flow to the center, reducing turbulence and energy loss. The arc-shaped top design of the top shelf 42 helps to guide rainwater to spread in all directions and enter the grille through the annular gaps, avoiding the formation of water accumulation points in the top center, while also preventing large debris from accumulating on the top.

[0054] Please see Figures 1 to 4 The top of the top shelf 42 has a through hole in the middle;

[0055] The backup drain assembly 6 is installed inside the through hole and is in a normal state to seal the through hole.

[0056] Even after the grille assembly 4 floats up and opens the main channel, the water level will continue to rise if there is a severe rainstorm or if the grille is completely blocked by an oversized foreign object and cannot float. At this time, the backup drainage assembly 6 comes into play. It is located at the through hole in the center of the top shelf 42 as a last resort.

[0057] Please see Figures 1 to 4 The backup bleed assembly 6 includes a sealing plate 61, a spring 62, and a bleed seat 63;

[0058] The drain seat 63 is installed at the bottom of the middle of the top layer frame 42 and is located on the outer periphery of the through hole;

[0059] The sealing plate 61 is slidably connected inside the drain seat 63, and the top of the sealing plate 61 is arc-shaped and adapts to the top of the top shelf 42;

[0060] The upper and lower ends of the spring 62 are respectively connected between the bottom of the sealing plate 61 and the inner bottom of the drain seat 63;

[0061] The side wall of the drain seat 63 is provided with a drain groove 631, and the through hole is connected to the interior of the grid cylinder 41 through the drain groove 631.

[0062] Under normal water levels, the sealing plate 61 is pushed upwards by the spring 62, ensuring its arc-shaped top perfectly fits the top curved surface of the top frame 42, tightly sealing the central through hole and preventing debris and rainwater from directly entering. When the water level rises abnormally, and the force of water pressure acting on the top of the sealing plate 61 exceeds the preload of the spring 62, the sealing plate 61 is pressed downwards, compressing the spring 62 and descending. Once the sealing plate 61 descends, a gap appears between its top and the through hole, and the drainage channel 631 on the side wall of the drainage seat 63 is exposed. Accumulated water can then flow directly into the lower grid cylinder 41 through the through hole and drainage channel 631, and then into the connecting pipe 1, forming an emergency direct drainage path at the top, ensuring a certain drainage capacity even in extreme situations.

[0063] In summary, during use, the rainwater drainage structure of this building allows the top frame 42 of the grid assembly 4 to sit stably on the top surface of the support ring frame 5 under its own weight. At this time, the comb teeth 52 are partially inserted into the grid groove 411. Rainwater flows along the guide plate 2 to the center, passes between the support ring frame 5 and the inner ring of the guide plate 2, and enters the grid groove 411 from the outside of the grid cylinder 41. After being filtered, it enters the internal cavity of the grid cylinder 41 and finally falls into the connecting pipe 1 below for discharge.

[0064] During heavy rainfall, the water depth increases, and the water level gradually submerges the support ring frame 5, acting on the airbag 3. When the water depth reaches the design threshold, the total buoyancy generated by the airbag 3 overcomes the gravity, guiding friction, and debris resistance of the grid assembly 4, pushing the entire grid assembly 4 to begin to float upward along the inner wall of the connecting pipe 1 and the guide of the comb teeth 52. As the grid assembly 4 rises, the bottom of its top frame 42 gradually detaches from the top surface of the support ring frame 5, the water flow of the grid channel 411 increases, the drainage capacity increases, and the accumulated water is quickly drained to prevent flooding. During this rising and falling process, the comb teeth 52 move relative to the grid channel 411, "combing" out any debris that may be stuck in the channel, thus achieving self-cleaning.

[0065] In extremely rare cases, such as when a large foreign object completely jams the grille assembly 4, preventing it from floating, the water level will continue to rise until it submerges the top of the top shelf 42. Water pressure acts on the top of the sealing plate 61 of the backup drainage assembly 6. When the water pressure exceeds the preload of the spring 62, the sealing plate 61 is pushed downwards, compressing the spring 62. After the sealing plate 61 descends, the central through-hole of the top shelf 42 is opened, and the upper end of the drainage channel 631 on the side wall of the drainage seat 63 is exposed. Water can then flow through this central through-hole and through the drainage channel 631 directly into the interior of the lower grille cylinder 41, and then into the connecting pipe 1 for emergency direct drainage. This serves as a final safety measure, ensuring a minimum drainage capacity under any circumstances to prevent serious consequences from complete blockage.

[0066] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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 utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances. Moreover, 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.

[0067] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A building rainwater drainage structure, characterized in that: Includes a connecting pipe (1), a guide plate (2) is installed on the top of the connecting pipe (1), a support ring frame (5) is installed on the top of the guide plate (2), and the inner ring of the support ring frame (5) is coaxial and corresponding to the inner ring of the guide plate (2); The inner ring of the support ring (5) and the inner ring of the guide plate (2) are movably fitted with the grid assembly (4). The water flows from between the support ring (5) and the guide plate (2) through the side wall of the grid assembly (4) into the interior of the connecting pipe (1). An airbag (3) is installed on the grille assembly (4). The airbag (3) can float up to push the grille assembly (4) to rise and open the space between the support ring frame (5) and the top of the guide plate (2).

2. The building rainwater drainage structure according to claim 1, characterized in that: The grid assembly (4) includes a grid cylinder (41) and a top layer frame (42). The grid tube (41) is installed in the middle of the bottom of the top layer frame (42), and the bottom end of the grid tube (41) extends into the interior of the connecting pipe (1) and contacts the inner wall of the connecting pipe (1); A spare drain assembly (6) is provided in the middle of the top of the top layer frame (42).

3. The building rainwater drainage structure according to claim 2, characterized in that: The airbag (3) is installed on the outer ring at the bottom of the top frame (42); The outer circumferential array of the grid cylinder (41) is provided with grid grooves (411), and the bottom of the grid grooves (411) is open. The bottom of the top layer frame (42) overlaps the top of the support ring frame (5).

4. The building rainwater drainage structure according to claim 3, characterized in that: The inner ring at the top of the support ring frame (5) is equipped with an inner ring (51), and the inner ring (51) is equipped with comb teeth (52) arranged in a row around the inner ring, and the comb teeth (52) correspond one-to-one with the grid groove (411). The bottom of the comb teeth (52) is conical, and the top layer frame (42) is slidably connected in the grid groove (411).

5. The building rainwater drainage structure according to claim 4, characterized in that: The inner ring of the guide plate (2) has a tapered structure that gradually decreases in size downwards; The top of the top shelf (42) has an arc-shaped structure that gradually descends from the middle to the outer edge.

6. The building rainwater drainage structure according to claim 5, characterized in that: The top layer frame (42) has a through hole in the middle of its top end; The backup drain assembly (6) is installed inside the through hole and is in a normal state to close the through hole.

7. The building rainwater drainage structure according to claim 6, characterized in that: The backup drain assembly (6) includes a sealing plate (61), a spring (62), and a drain seat (63); The drain seat (63) is installed at the bottom of the middle of the top layer frame (42) and is located on the outer periphery of the through hole; The sealing plate (61) is slidably connected inside the drain seat (63), and the top of the sealing plate (61) is arc-shaped and adapts to the top of the top shelf (42); The upper and lower ends of the spring (62) are respectively connected between the bottom of the sealing plate (61) and the inner bottom of the drain seat (63); The side wall of the drain seat (63) is provided with a drain groove (631), and the through hole is connected to the interior of the grid cylinder (41) through the drain groove (631).

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