Waterproof flow guide structure suitable for building
By installing a grate with multiple drain outlets and a bladed mesh cover in the rainwater hopper, combined with filter screen filtration, the problem of easy clogging of traditional rainwater hoppers is solved, achieving efficient drainage and easy-to-maintain waterproof effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BAI QI JIAN SHE JI TUAN YOU XIAN GONG SI
- Filing Date
- 2025-04-23
- Publication Date
- 2026-04-17
AI Technical Summary
Traditional rain gutters are easily clogged by fallen leaves, mud, sand, plastic and other debris, leading to water accumulation and leaks in the roof.
A waterproof flow guiding structure was designed, including a flow guiding component, a grate, and a mesh cover. The grate has multiple drainage outlets, and the mesh cover has blades that use centrifugal force to throw out debris. Combined with the filter screen, secondary filtration is performed to prevent clogging.
It effectively prevents clogging, improves drainage efficiency, reduces maintenance difficulty, and enhances waterproofing.
Smart Images
Figure CN224134075U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of building roof waterproofing projects, and in particular to a waterproofing diversion structure suitable for buildings. Background Technology
[0002] In building waterproofing projects, multi-story and above buildings typically employ organized drainage systems to address roof rainwater drainage issues. Organized drainage schemes can be categorized into two types based on specific conditions: external drainage and internal drainage. External drainage refers to rainwater being discharged through downpipes located outside the building; this is more suitable for multi-story buildings and is preferred in southern regions. Internal drainage refers to a rainwater drainage system with rainwater hoppers on the roof and rainwater pipes inside the building; this is more suitable for high-rise buildings and buildings with large roofs and is preferred in northern regions. However, traditional rainwater hoppers often have a planar structure, which is easily clogged by fallen leaves, mud, and plastic debris, leading to water accumulation and leaks on the roof. Utility Model Content
[0003] In view of the problem that the existing technology is easily blocked by debris, the purpose of this utility model is to provide a waterproof drainage structure suitable for buildings.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0005] A waterproof drainage structure suitable for buildings includes a building body 1, which has a pipe shaft, a drain pipe 2, and a drainage component 3. The drain pipe 2 is installed inside the pipe shaft. The top end of the drain pipe 2 extends to the roof of the building body 1 and connects to the drainage component 3. A drainage slope 11 is provided on the roof of the building body 1 to collect water into the drainage component 3. The drainage component 3 includes a drain hopper 31, a grate 32, and a mesh cover 33. The lower end of the drain hopper 31 is connected to the drain pipe 2. The grate 32 is detachably installed on the upper end of the drain hopper 31; the grate 32 is provided with a first drain outlet 321 and a second drain outlet 322, the first drain outlet 321 is located at the center of the grate 32, and a plurality of second drain outlets 322 are provided around the first drain outlet 321; the mesh cover 33 is rotatably installed on the top side of the grate 32 and located above the first drain outlet 321, and the mesh cover 33 is used to block the first drain outlet 321; the mesh cover 33 is provided with a plurality of third drain outlets 331.
[0006] Furthermore, the mesh cover 33 includes a top cover 332, blades 333, a circular frame 334, support rods 335, and a connecting shaft 336. The top cover 332 is connected to the circular frame 334 through multiple blades 333, and the multiple blades 333 are evenly distributed along the circumference of the circular frame 334. A third drain outlet 331 is formed between any two adjacent blades 333. The connecting shaft 336 is connected to the inner edge of the circular frame 334 through multiple support rods 335, and the connecting shaft 336 is located at the center of the circular frame 334. The connecting shaft 336 is rotatably connected to the grate 32.
[0007] Furthermore, the top cover 332 is a circular thin-walled structure, the top of the top cover 332 is an arc-shaped surface, and the top of the top cover 332 is higher than its outer edge; the top cover 332 is provided with a plurality of fourth drain outlets 3321.
[0008] Furthermore, the top cover 332 is coaxial with the ring frame 334, and the outer edge diameter of the top cover 332 is larger than the outer edge diameter of the ring frame 334.
[0009] Furthermore, the grate 32 includes an annular drainage section 323, connecting rods 324, and bearing seats 325. Multiple second drainage outlets 322 are all formed on the annular drainage section 323 and are evenly distributed along the circumference of the annular drainage section 323. A first drainage outlet 321 is formed on the inner edge of the annular drainage section 323. The bearing seat 325 is connected to the inner edge of the annular drainage section 323 via multiple connecting rods 324, and the bearing seat 325 is located at the center of the first drainage outlet 321. The bearing seat 325 is connected to the connecting shaft 336 via a bearing.
[0010] Furthermore, the drain hopper 31 includes a vertical cylindrical part 311, a bucket-shaped part 312, a connecting part 313, and an annular limiting part 314. The vertical cylindrical part 311 is connected to the connecting part 313 through the bucket-shaped part 312. The connecting part 313 is sealed to the drain pipe 2. The annular limiting part 314 is connected to the inner edge of the vertical cylindrical part 311, and the grate 32 is placed on the annular limiting part 314.
[0011] Furthermore, the annular limiting part 314 is provided with a limiting groove 3141, and the bottom edge of the grate 32 is provided with a limiting protrusion 326, which is placed in the limiting groove 3141.
[0012] Furthermore, the flow guiding component 3 also includes a filter screen 34, which is cylindrical in shape; a plurality of fifth drain ports 341 are provided on the side wall of the filter screen 34; the filter screen 34 is installed in the drain hopper 31, the top of the filter screen 34 abuts against the grate 32, and a plurality of second drain ports 322 are distributed around the filter screen 34.
[0013] Furthermore, a waterproof layer 111 is provided on the guide slope 11, and the waterproof layer 111 is sealed to the outer wall of the water funnel 31.
[0014] Furthermore, the flow guiding component 3 also includes a waterproof layer connection part 36, which is connected to the outer wall of the water funnel 31. The waterproof layer connection part 36 and the outer wall of the water funnel 31 form an annular groove 37, and the waterproof layer 111 fills the annular groove 37.
[0015] Because this utility model employs the aforementioned technology, it has the following positive effects compared to existing technologies:
[0016] (1) The grate of this utility model is provided with a first drain outlet and a second drain outlet. The first drain outlet is located at the center of the grate, and multiple second drain outlets are arranged around the first drain outlet. A mesh cover is installed above the first drain outlet, and a third drain outlet is provided on the mesh cover. When the first drain outlet located on the plane is blocked, rainwater can also enter through the third drain outlet arranged vertically on the mesh cover. Compared with the prior art, this utility model increases the water leakage channel, making the anti-clogging effect better.
[0017] (2) The drain hopper of this utility model is equipped with a filter screen, which can block some debris in the annular filtration space formed between the outer periphery of the filter screen and the inner wall of the drain hopper, thus playing a secondary filtration role and effectively preventing debris from entering the downstream drainage channel and causing blockage. While achieving efficient filtration, this design also makes it easy for maintenance personnel to directly clean the accumulated debris by opening the grate, significantly reducing the difficulty of maintenance.
[0018] (3) The mesh cover of this utility model is equipped with blades, which can drive the mesh cover to rotate when an appropriate external force is applied to the blades. Specifically, when natural wind acts on the blades, it can drive the mesh cover to rotate, using centrifugal force to throw out the debris attached to the surface of the mesh cover, thus preventing it from clogging the drain holes on the mesh cover. Compared with the prior art, the addition of the function of throwing out debris further improves the anti-clogging effect. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of a roof structure for a waterproof drainage structure applicable to buildings, based on this utility model.
[0020] Figure 2 This is a top view of a roof of a waterproof drainage structure applicable to buildings according to this utility model.
[0021] Figure 3 This is a cross-sectional view of a waterproof drainage structure applicable to buildings according to this utility model.
[0022] Figure 4 This is a schematic diagram of the flow guiding component of a waterproof flow guiding structure applicable to buildings according to this utility model.
[0023] Figure 5 This is a top view of a water diversion component of a waterproof water diversion structure applicable to buildings according to this utility model.
[0024] Figure 6 This is a first-view exploded view of a flow guiding component of a waterproof flow guiding structure applicable to buildings according to this utility model.
[0025] Figure 7 This is a second-view exploded view of a flow guiding component of a waterproof flow guiding structure applicable to buildings according to this utility model.
[0026] In the attached diagram: 1. Main building structure; 11. Guide slope; 111. Waterproof layer; 12. Parapet wall; 13. Roof stairwell; 2. Drainage pipe; 3. Guide assembly; 31. Drainage funnel; 311. Vertical section; 312. Funnel-shaped section; 313. Connecting section; 314. Annular limiting section; 3141. Limiting groove; 32. Grate; 321. First drain outlet; 322. Second drain outlet; 323. 324. Leakage section; 325. Connecting rod; 326. Bearing seat; 327. Limiting protrusion; 33. Mesh cover; 331. Third leak outlet; 332. Top cover; 3321. Fourth leak outlet; 333. Blade; 334. Circular frame; 335. Support rod; 336. Connecting shaft; 34. Filter screen; 341. Fifth leak outlet; 35. Annular filter space; 36. Waterproof layer connection part; 37. Annular groove. Detailed Implementation
[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.
[0028] Please refer to Figures 1 to 7 The diagram illustrates a waterproof drainage structure suitable for buildings, comprising a building body 1 with a pipe shaft, a drain pipe 2, and a drainage component 3. The drain pipe 2 is installed within the pipe shaft; its top extends to the roof of the building body 1 and connects to the drainage component 3; its bottom connects to a drainage network; and a drainage slope 11 is provided on the roof of the building body 1 to collect water at the drainage component 3. (Please refer to...) Figure 2 As shown, Figure 2The arrows indicate the direction of water diversion. The quantity and distribution of the drain pipes 2 and the diversion components 3 are designed according to the actual area of the roof and must comply with the requirements of building construction specifications. The diversion components 3 include a drain hopper 31, a grate 32, and a mesh cover 33. The lower end of the drain hopper 31 is connected to the drain pipe 2; the grate 32 is detachably installed on the upper end of the drain hopper 31, and the grate 32 and the drain hopper 31 are detachably connected to facilitate maintenance inside the drain hopper 31; the grate 32 is provided with a first drain outlet 321 and a second drain outlet 322. The first drain outlet 321 is located at the center of the grate 32, and the second drain outlet 322 is located at the center of the grate 32. Multiple second drain outlets 322 are arranged around the grate 32; a mesh cover 33 is rotatably installed on the top side of the grate 32; and the mesh cover 33 is located above the first drain outlet 321. The mesh cover 33 is used to enclose the first drain outlet 321 to prevent debris in the rainwater from accumulating at the first drain outlet 321; multiple third drain outlets 331 are arranged on the mesh cover 33, and rainwater can enter from the third drain outlets 331 and enter the drain hopper 31 through the first drain outlet 321. The second drain outlets 322 and the third drain outlets 331 form inlets at different heights. When the second drain outlets 322 located on the plane are blocked, rainwater can also enter through the vertically arranged third drain outlets 331.
[0029] Furthermore, in a preferred embodiment, the mesh cover 33 includes a top cover 332, blades 333, a circular frame 334, support rods 335, and a connecting shaft 336. The top cover 332 is connected to the circular frame 334 by a plurality of blades 333, and the plurality of blades 333 are distributed at equal intervals along the circumference of the circular frame 334. A third drain outlet 331 is formed between any two adjacent blades 333. The connecting shaft 336 is connected to the inner edge of the circular frame 334 by a plurality of support rods 335, and the connecting shaft 336 is located at the center of the circular frame 334. Preferably, the connecting shaft 336 is connected to the inner edge of the circular frame 334 by three support rods 335, and the three support rods 335 are arranged in an array along the circumference of the circular frame 334. The connecting shaft 336 is rotatably connected to the grate 32.
[0030] Furthermore, in a preferred embodiment, the ring frame 334 is positioned above the first drain outlet 321, the inner diameter of the ring frame 334 is greater than or equal to the diameter of the first drain outlet 321, and a plurality of second drain outlets 322 are distributed on the outer periphery of the ring frame 334.
[0031] Furthermore, in a preferred embodiment, the blade 333 is a flat plate structure, and the blade 333 is tilted relative to the radial plane of the ring frame 334 at an angle of 15°-75°, and all blades 333 are tilted in the same direction, forming a unidirectional flow-guiding curved surface array, as shown in the specific arrangement. Figure 5 and Figure 6As shown. When natural wind acts on the blades 333, it can drive the mesh cover 33 to rotate, using centrifugal force to throw off debris attached to the mesh cover 33, preventing it from clogging the third drain outlet 331. This is more likely to occur in dry weather, as the mesh cover 33 is not affected by rainwater. When the impact force of water flow acts on the blades 333, it can push the mesh cover 33 to rotate, accelerating the formation of vortices and thus increasing the water intake speed.
[0032] Furthermore, in a preferred embodiment, the top cover 332 is a circular thin-walled structure, the top of the top cover 332 is an arc-shaped surface, the top of the top cover 332 is higher than its outer edge, and the design of the arc-shaped top surface being higher than the outer edge forms a natural slope, making it difficult for water to accumulate at the top; the top cover 332 is provided with multiple fourth drain outlets 3321, which increases the water inlet of the mesh cover 33.
[0033] Furthermore, in a preferred embodiment, the top cover 332 is coaxial with the ring frame 334, and the outer edge diameter of the top cover 332 is larger than the outer edge diameter of the ring frame 334.
[0034] Furthermore, in a preferred embodiment, the grate 32 includes an annular drainage section 323, connecting rods 324, and a bearing seat 325. Multiple second drainage outlets 322 are all formed on the annular drainage section 323 and are evenly distributed along the circumference of the annular drainage section 323. A first drainage outlet 321 is formed along the inner edge of the annular drainage section 323. The bearing seat 325 is connected to the inner edge of the annular drainage section 323 via multiple connecting rods 324, and the bearing seat 325 is located at the center of the first drainage outlet 321. Preferably, the bearing seat 325 is connected to the inner edge of the annular drainage section 323 via three connecting rods 324, and the three connecting rods 324 are arranged in a circumferential array along the inner edge of the annular drainage section 323. The bearing seat 325 is connected to the connecting shaft 336 via a bearing.
[0035] Furthermore, in a preferred embodiment, the drain hopper 31 includes a vertical cylindrical portion 311, a bucket-shaped portion 312, a connecting portion 313, and an annular limiting portion 314. The vertical cylindrical portion 311 is connected to the connecting portion 313 through the bucket-shaped portion 312. The connecting portion 313 is sealed to the drain pipe 2. Preferably, the connecting portion 313 is inserted into the drain pipe 2, and the outer wall of the connecting portion 313 is in contact with the inner wall of the drain pipe 2 and is sealed by adhesive. The annular limiting portion 314 is connected to the upper part of the inner edge of the vertical cylindrical portion 311, and the grate 32 is placed on the annular limiting portion 314. The top of the grate 32 is not higher than the top of the vertical cylindrical portion 311.
[0036] Furthermore, in a preferred embodiment, a limiting groove 3141 is provided on the annular limiting part 314; a limiting protrusion 326 is provided on the bottom edge of the grate 32, and the limiting protrusion 326 is placed in the limiting groove 3141 to prevent the grate 32 from rotating and improve stability.
[0037] Furthermore, in a preferred embodiment, the annular limiting portion 314 is provided with three limiting grooves 3141, which are evenly distributed along the circumference of the annular limiting portion 314. The bottom edge of the grate 32 is provided with three limiting protrusions 326, and any one of the limiting protrusions 326 matches any one of the limiting grooves 3141. The three-point limiting can further improve the stability of the grate 32.
[0038] Furthermore, in a preferred embodiment, the flow guiding component 3 further includes a filter screen 34, which is cylindrical in shape. Multiple fifth drain ports 341 are provided on the sidewall of the filter screen 34. The filter screen 34 is installed inside the drain hopper 31, with its top end abutting the bottom of the grate 32. Multiple second drain ports 322 are distributed around the filter screen 34. The filter screen 34 is coaxial with the first drain port 321, and its top end surrounds the outer periphery of the first drain port 321. The bottom end of the filter screen 34 abuts the inner wall of the bucket-shaped portion 312. The fifth drain ports 341 are smaller than the second drain ports 322. The filter screen 34 can trap debris within the annular filtration space 35 formed between the outer periphery of the filter screen 34 and the inner wall of the drain hopper 31, thus providing secondary filtration and effectively preventing debris from entering the downstream drainage channel and causing blockage. When maintenance personnel perform roof repairs, they can open the grate 32 to clean the accumulated debris in the annular filtration space 35. This design achieves efficient filtration while significantly reducing maintenance difficulty. When the annular filtration space 35 becomes clogged with excessive debris, water can also enter through the first drain outlet 321.
[0039] Furthermore, in a preferred embodiment, the filter screen 34 is detachably installed inside the drain hopper 31; a plurality of positioning protrusions are provided on the inner wall of the hopper-shaped portion 312, the plurality of positioning protrusions surround the outer periphery of the filter screen 34 and abut against the outer wall of the filter screen 34, the function of which is to facilitate positioning when installing the filter screen 34.
[0040] Furthermore, in a preferred embodiment, a waterproof layer 111 is provided on the guide slope 11, and the waterproof layer 111 is sealed to the outer wall of the water funnel 31. The purpose of sealing the waterproof layer 111 to the outer wall of the water funnel 31 is to prevent rainwater from entering.
[0041] Furthermore, in a preferred embodiment, the flow guiding component 3 further includes a waterproof layer connecting portion 36, which is circumferentially connected to the outer wall of the water funnel 31, forming an annular groove 37 with the outer wall of the water funnel 31. The waterproof layer 111 fills the annular groove 37. An annular bottom wall and two annular side walls are provided within the groove 37, both of which are connected to the waterproof layer 111. The function of the waterproof layer connecting portion 36 is to increase the connection area between the waterproof layer 111 and the flow guiding component 3, and to increase the multi-directional connection paths, thereby enhancing the waterproofing effect. In addition, if the waterproof layer 111 shrinks due to the external environment, the waterproof layer connecting portion 36 also provides tensile strength.
[0042] Furthermore, in a preferred embodiment, a parapet wall 12 and a roof stairwell 13 are also provided on the roof of the main building 1. The parapet wall 12 serves to protect the safety of personnel and prevent rainwater from the roof from scattering onto the exterior facade of the building.
[0043] Working principle:
[0044] When it rains, rainwater on the roof is guided to the guide component 3 through the guide slope 11. Then, the rainwater enters the drain hopper 31 through the grate 32, and finally is discharged outdoors or into the drainage network through the drain pipe 2. Specifically, rainwater enters the drain hopper 31 through the second drain outlet 322, and then enters the drain pipe 2 after secondary filtration by the filter screen 34. Rainwater can also enter the mesh cover 33 through the third drain outlet 331 and the fourth drain outlet 3321, and then enter the drain hopper 31 through the first drain outlet 321.
[0045] The mesh cover 33 is rotatably mounted on the top side of the grate 32. When natural wind acts on the blades 333, it can drive the mesh cover 33 to rotate, using centrifugal force to throw off debris attached to the mesh cover 33, preventing it from clogging the third drain outlet 331 on the mesh cover 33. When the impact force of the water flow acts on the blades 333, it can push the mesh cover 33 to rotate, accelerating the formation of vortices and thus increasing the water intake speed.
[0046] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A waterproof and flow guiding structure for a building, comprising a building main body (1) provided with a pipe shaft, characterized in that: It also includes a drain pipe (2) and a flow guiding assembly (3), wherein the drain pipe (2) is installed in a pipe shaft; the top end of the drain pipe (2) extends to the roof of the main building (1) and is connected to the flow guiding assembly (3); the roof of the main building (1) is provided with a flow guiding slope (11) for collecting water into the flow guiding assembly (3); the flow guiding assembly (3) includes a drain hopper (31), a grate (32) and a mesh cover (33), the lower end of the drain hopper (31) is connected to the drain pipe (2); the grate (32) is detachably installed on the drain hopper (31). The upper end of the grate (32); the grate (32) is provided with a first drain outlet (321) and a second drain outlet (322), the first drain outlet (321) is located at the center of the grate (32), and a plurality of second drain outlets (322) are provided around the first drain outlet (321); the mesh cover (33) is rotatably installed on the top side of the grate (32); the mesh cover (33) is located above the first drain outlet (321) and is used to block the first drain outlet (321); the mesh cover (33) is provided with a plurality of third drain outlets (331).
2. The waterproof and flow guiding structure for a building as claimed in claim 1, wherein: The mesh cover (33) includes a top cover (332), blades (333), a ring frame (334), support rods (335), and a connecting shaft (336). The top cover (332) is connected to the ring frame (334) through multiple blades (333), and the multiple blades (333) are evenly distributed along the circumference of the ring frame (334). A third drain outlet (331) is formed between any two adjacent blades (333). The connecting shaft (336) is connected to the inner edge of the ring frame (334) through multiple support rods (335), and the connecting shaft (336) is located at the center of the ring frame (334). The connecting shaft (336) is rotatably connected to the grate (32).
3. The waterproof and flow guide structure for a building according to claim 2, wherein: The top cover (332) is a circular thin-walled structure, and the top of the top cover (332) is an arc-shaped surface, with the top of the top cover (332) being higher than its outer edge; The top cover (332) is provided with multiple fourth drain outlets (3321).
4. The waterproof and flow guiding structure for a building as claimed in claim 3, wherein: The top cover (332) is coaxial with the ring frame (334), and the outer edge diameter of the top cover (332) is larger than the outer edge diameter of the ring frame (334).
5. The waterproof and flow guiding structure for a building as claimed in any one of claims 2 to 4, wherein: The grate (32) includes an annular drainage section (323), connecting rods (324), and bearing seat (325). A plurality of second drainage ports (322) are provided on the annular drainage section (323) and are evenly distributed along the circumference of the annular drainage section (323). A first drainage port (321) is formed on the inner edge of the annular drainage section (323). The bearing seat (325) is connected to the inner edge of the annular drainage section (323) through a plurality of connecting rods (324), and the bearing seat (325) is located at the center of the first drainage port (321). The bearing seat (325) is connected to the connecting shaft (336) through a bearing.
6. The water-proof and flow-guiding structure for a building as claimed in claim 1, wherein: The drain hopper (31) includes a vertical cylindrical part (311), a bucket-shaped part (312), a connecting part (313), and an annular limiting part (314). The vertical cylindrical part (311) is connected to the connecting part (313) through the bucket-shaped part (312). The connecting part (313) is sealed to the drain pipe (2). The annular limiting part (314) is connected to the inner edge of the vertical cylindrical part (311), and the grate (32) is placed on the annular limiting part (314).
7. The waterproof and flow guiding structure for a building as claimed in claim 6, wherein: The annular limiting part (314) is provided with a limiting groove (3141), and the bottom edge of the grate (32) is provided with a limiting protrusion (326), which is placed in the limiting groove (3141).
8. The water-proof and flow-guiding structure for a building as claimed in claim 1, wherein: The flow guiding component (3) also includes a filter screen (34), which is cylindrical; a plurality of fifth drain ports (341) are provided on the side wall of the filter screen (34); the filter screen (34) is installed in the drain hopper (31), the top of the filter screen (34) abuts against the grate (32), and a plurality of second drain ports (322) are distributed around the filter screen (34).
9. The waterproof drainage structure for buildings according to claim 1, characterized in that: A waterproof layer (111) is provided on the guide slope (11), and the waterproof layer (111) is sealed to the outer wall of the water funnel (31).
10. The waterproof and flow guiding structure for a building according to claim 9, wherein: The flow guiding component (3) also includes a waterproof layer connection part (36), which is connected to the outer wall of the water funnel (31) in a circumferential manner. The waterproof layer connection part (36) and the outer wall of the water funnel (31) form an annular groove (37), and the waterproof layer (111) fills the annular groove (37).