Siphon type roof drain matched with single-layer flexible roof

Abstract

The utility model discloses a siphon type roof drain matched with a single-layer flexible roof, which comprises a water collecting hopper, a waterproof coiled material, a fixing ring and a shunting grating cover, the top end of the water collecting hopper radially extends to form a fixed supporting structure, the waterproof coiled material is arranged on the upper side of the fixed supporting structure, and the waterproof coiled material extends out of the fixed supporting structure. A through hole is formed in the position, corresponding to an upper end opening of the water collecting hopper, of the waterproof roll, the fixing ring penetrates through the through hole to be fixedly connected with the water collecting hopper, the fixing ring limits the waterproof roll on the side, away from the fixed supporting structure, of the waterproof roll, an anti-vortex structure is arranged in the fixing ring, and the flow dividing grating covers the fixing ring. The roof drain is better in waterproof performance, and the quality is guaranteed; on-site materials are few, and installation is easy; by the adoption of the assembly type construction technology, the site operation difficulty is lowered, the procedure steps are reduced, the construction efficiency is improved, and the construction quality is guaranteed; installation and maintenance are easy; siphon is generated at the lower water level in front of the bucket, and the load rising hidden danger caused by roof accumulated water can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of single-layer flexible roof drainage, in particular to a siphon type rainwater bucket adapted for a single-layer flexible roof. Background Art

[0002] In recent years, extreme weather has occurred frequently at home and abroad, and torrential rains that exceed the design recurrence period have continued to occur. Countless building roofs have seen water seepage and leakage due to untimely drainage. The structural load has increased sharply due to poor drainage, and it has also caused long-term and irreversible safety hazards to the main body of the building, until a building collapse accident occurs.

[0003] The single-layer flexible roof system (hereinafter referred to as the single-layer roof) is a roof system with excellent performance. After years of application development and experience accumulation, its scale is expanding. However, with the increase of the area of ​​single buildings, the roof area is also getting larger and larger, which brings the pressure of rainwater drainage. Gravity drainage can no longer meet the drainage needs of large industrial and commercial buildings due to factors such as drainage efficiency, layout design and installation slope. At present, there is no siphon rainwater bucket product that is fully adapted to single-layer roofs on the market. The conventional method is to forcibly apply the siphon rainwater bucket to the single-layer roof system by pre-embedding concrete and gluing, but this method has the hidden dangers of high leakage risk, uneconomical construction, poor aesthetics, etc.; although some products are optimized for single-layer roofs, there are also problems such as many parts, many construction processes and great construction difficulty, and there are also related problems in the later use and maintenance. For example: the conventional siphon rainwater bucket lacks development for the use conditions of single-layer roofs, so that the siphon rainwater bucket is still physically connected to the roof and the waterproof layer through a pressure plate with sealant. Although sealants can be made from branded products with guaranteed weather resistance, rain gutters will experience long-term rainwater soaking and drainage vibrations, as well as freeze-thaw aging caused by climate change, improper glue application by construction workers, and premature aging of surrounding membranes due to long-term pulling. These factors will cause the rain gutters and roof waterproof seals to be at risk of failure. At the same time, when the siphon rain gutters are damaged, they are often too strong to be removed for repair, and the only way to solve the problem is to cut the entire gutter and then add a layer of membrane waterproofing at the gap, which ultimately makes the area around the gutter bloated and affects the aesthetics of the building roof.

[0004] Therefore, in view of the above-mentioned technical problems, it is necessary to make new innovations. Utility Model Content

[0005] The purpose of the utility model is to solve at least one of the deficiencies in the prior art, so a siphon rainwater bucket adapted to a single-layer flexible roof is proposed, and the specific scheme is as follows:

[0006] A siphon type rainwater gutter adapted for a single-layer flexible roof comprises a water collecting bucket, a waterproof membrane, a fixing ring and a diversion grille cover, a fixed support structure extending radially from the top of the water collecting bucket, the waterproof membrane is arranged on the upper side of the fixed support structure, the waterproof membrane extends out of the fixed support structure, the waterproof membrane is provided with a through hole at the upper port of the water collecting bucket corresponding to the water collecting bucket, the fixing ring passes through the through hole and is fixedly connected to the water collecting bucket, the fixing ring limits the waterproof membrane on the side of the waterproof membrane away from the fixed support structure, an anti-vortex structure is arranged in the fixing ring, and the diversion grille cover is arranged above the fixing ring.

[0007] Furthermore, the water collecting bucket and the fixed support structure are an integrated structure; or

[0008] The water collecting bucket and the fixed supporting structure are split structures, and the fixed supporting structure is fixedly connected to the water collecting bucket.

[0009] Furthermore, a stop surface is provided on the circumferential wall of the fixing ring, and when the fixing ring is fixedly connected to the water collecting bucket, the stop surface is in close contact with the waterproof membrane.

[0010] Furthermore, the anti-vortex structure includes a plurality of circumferentially distributed anti-vortex blades, one end of a plurality of the anti-vortex blades are respectively fixedly connected to the fixing ring, and the other ends of a plurality of the anti-vortex blades are respectively extended inwardly and fixed.

[0011] Furthermore, the anti-vortex structure also includes a sleeve, and a plurality of the anti-vortex blades are arranged around the sleeve, the inner ends of the anti-vortex blades are fixedly connected to the sleeve, and the outer ends of the anti-vortex blades are fixedly connected to the fixing ring.

[0012] Furthermore, a fixed shaft is provided on the diverter grille cover, and the fixed shaft is passed through the sleeve and fixedly connected to the sleeve.

[0013] Furthermore, the fixed shaft is threadedly connected to the sleeve.

[0014] Furthermore, a positioning structure is provided on the fixed shaft.

[0015] Furthermore, the diverter grille cover includes a top plate and a plurality of diverter plates circumferentially distributed at the bottom of the top plate, and the plurality of diverter plates extend downward.

[0016] Furthermore, a sealing structure is also provided on the water collecting bucket.

[0017] Compared with the prior art, the siphon rainwater bucket adapted for the single-layer flexible roof of the present application has at least one or more of the following beneficial effects:

[0018] The siphonic rainwater gutter of this application is mainly developed for single-layer flexible roofs, which solves the shortcomings of the conventional siphonic rainwater gutter on the market in the application on single-layer roofs. At the beginning of product design, a full investigation of the needs of design, products, standards and specifications was carried out, and the needs of construction, installation, application, use and maintenance were fully considered. Therefore, compared with conventional products on the market, the siphonic rainwater gutter adapted to the single-layer flexible roof of this patent has the characteristics of highly integrated prefabrication, simple and efficient construction, and economical, beautiful and practical. It solves many problems of conventional products such as large materials, difficult installation, and mismatch; it meets the drainage needs of large-scale building roofs, and covers the characteristics of single-layer roofs, achieving a balanced cycle state with the same life as the roof system.

[0019] The siphon rain gutter of the present application adopts highly integrated prefabricated parts, and is standardized and industrially produced and processed in the factory, and implements a full inspection process, so it has better waterproof performance and guaranteed quality; there are fewer materials on site and the installation is simpler; the assembly construction technology is adopted, the difficulty of on-site operation is reduced, the number of process steps is reduced, the construction efficiency is improved, and the construction quality is guaranteed; it is a siphon rain gutter specially used for single-layer roofs, which meets the requirements of roof characteristics and is easy to install and maintain; a siphon is generated at a lower water level in front of the gutter, which can reduce the hidden danger of load increase caused by water accumulation on the roof; it adopts a universal design, which can meet the connection of drainage pipes of different diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the three-dimensional structure of the siphon rainwater bucket provided in an embodiment of the present application after assembly;

[0021] Figure 2 A schematic diagram of the side view of the siphon rainwater bucket provided in an embodiment of the present application after assembly;

[0022] Figure 3 A schematic diagram of the explosion structure of the siphon type rain bucket provided in the embodiment of the present application;

[0023] Figure 4 A schematic diagram of the state of the siphon rainwater bucket provided in the embodiment of the present application when it leaves the factory;

[0024] Figure 5 A schematic diagram of a three-dimensional structure of a water collecting bucket and a fixed support structure provided in an embodiment of the present application;

[0025] Figure 6 A schematic diagram of a top view of the structure after the water collecting bucket and the fixed support structure are combined according to an embodiment of the present application;

[0026] Figure 7 A schematic side view of the structure of the water collecting bucket and the fixed support structure provided in an embodiment of the present application after being combined;

[0027] Figure 8A schematic diagram of the side structure of a fixing ring provided in an embodiment of the present application;

[0028] Fig. 9 A schematic diagram of the three-dimensional structure of the anti-eddy current structure provided in an embodiment of the present application;

[0029] Fig.10 A schematic diagram of the side structure of the diverter grille cover provided in an embodiment of the present application;

[0030] Fig.11 A schematic diagram of the top view of the diverter grille cover provided in an embodiment of the present application.

[0031] Among them, 1-water collecting bucket, 2-waterproof membrane, 21-through hole, 3-fixing ring, 31-anti-vortex structure, 311-anti-vortex blade, 312-sleeve, 32-stop surface, 33-flange structure, 4-diverter grille cover, 41-fixed shaft, 42-positioning structure, 43-top plate, 44-diverter plate, 5-fixed support structure, 51-through hole, 52-fixed hole, 6-sealing structure. DETAILED DESCRIPTION

[0032] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0033] Example

[0034] This embodiment provides a siphon rainwater bucket suitable for a single-layer flexible roof, which includes a water collecting bucket 1, a waterproof coiled material 2, a fixing ring 3 and a diversion grille cover 4. Figures 1 to 4 A fixed support structure 5 is radially extended from the top of the water collecting bucket 1, and the fixed support structure 5 is preferably in the shape of a plate, such as Figures 5 to 7 As shown. The waterproof membrane 2 is arranged on the upper side of the fixed support structure 5, and the waterproof membrane 2 extends out of the fixed support structure 5. The waterproof membrane 2 is preferably made of TPO or PVC. The waterproof membrane 2 is provided with a through hole 21 at the upper port of the water collecting bucket 1. The fixing ring 3 passes through the through hole 21 and is fixedly connected to the water collecting bucket 1, and the fixing ring 3 limits the waterproof membrane 2 on the side of the waterproof membrane 2 away from the fixed support structure 5. An anti-vortex structure 31 is provided in the fixing ring 3. The diversion grille cover 4 is arranged above the fixing ring 3.

[0035] In a preferred embodiment, the water collecting bucket 1 and the fixed support structure 5 are split structures. Figure 3As shown. The water collecting hopper 1 and the fixed support structure 5 are preferably made of metal, and are further preferably made of stainless steel. The fixed support structure 5 is further preferably a coating plate that can be perfectly laminated with the TPO material to ensure the sealing and impermeability between the fixed support structure 5 and the TPO material. Since the coating plate is an existing product, it will not be described in detail here. The water collecting hopper 1 and the fixed support structure 5 are preferably fixed by welding. It should be noted that in this embodiment, either a hole is provided on the fixed support structure 5, and the top of the water collecting hopper 1 is penetrated into the hole and welded and fixed, or the fixed support structure 5 is welded and fixed to the top of the water collecting hopper 1, and a through hole 51 is provided at the fixed support structure 5 corresponding to the upper port of the water collecting hopper 1. The through hole 51 is preferably matched with the upper port of the water collecting hopper 1. Regardless of the above implementation mode, the water collecting hopper 1 preferably does not penetrate the upper side of the fixed support structure 5, such as Figures 5 to 7 In another embodiment, the water collecting bucket 1 and the fixed support structure 5 may also be an integrally formed structure. The fixed support structure 5 is provided with a fixing hole 52, which can be fixed to the roof by a fastening structure such as bolts.

[0036] The circumferential wall of the fixing ring 3 is provided with a stop surface 32. Figure 3 and Figure 8 As shown in the figure, a preferred solution is schematically shown, the top end of the fixing ring 3 is radially extended with a flange structure 33, and the size of the flange structure 33 is larger than the upper port of the water collecting bucket 1 or the through hole 51 on the fixing support structure 5. The bottom end of the fixing ring 3 is inserted into the water collecting bucket 1 until the stop surface 32 formed by the flange structure 33 is in close contact with the waterproof coiled material 2 arranged on the upper side of the fixing support structure 5, so that the waterproof coiled material 2 is clamped between the flange structure 33 and the fixing support structure 5 to form a limit. There are many forms of fixing the fixing ring 3 and the water collecting bucket 1, for example, the bottom end of the fixing ring 3 can be interference fit with the inner wall of the water collecting bucket 1 or the through hole 51 on the fixing support structure 5, and fixed by pressing; for another example, the fixing ring 3 is preferably made of metal, and more preferably of stainless steel, and the bottom end of the fixing ring 3 is fixed to the inner wall of the water collecting bucket 1 by welding, etc.

[0037] In a preferred embodiment, the anti-vortex structure 31 preferably includes a plurality of circumferentially distributed anti-vortex blades 311. One end of the plurality of anti-vortex blades 311 is fixedly connected to the fixing ring 3, and the other ends of the plurality of anti-vortex blades 311 are respectively extended inwardly and fixed. Figure 3 , Figure 4 and Fig. 9As shown, a preferred solution is schematically shown in the figure, the anti-vortex structure 31 also includes a sleeve 312, and a plurality of the anti-vortex blades 311 (for example, three) are arranged around the sleeve 312. The inner end of the anti-vortex blade 311 is fixedly connected to the sleeve 312, and the outer end of the anti-vortex blade 311 is fixedly connected to the fixing ring 3. The anti-vortex blade 311 and the sleeve 312 are preferably made of metal, such as stainless steel, etc., and the anti-vortex blade 311 is preferably fixed to the sleeve 312 or the fixing ring 3 by welding. In a preferred embodiment, the anti-vortex blade 311 is preferably arranged vertically; the thickness of the anti-vortex blade 311 is preferably 2 mm; the sleeve 312 is preferably arranged at the axis of the fixing ring 3; the axial direction of the sleeve 312 is preferably arranged vertically.

[0038] In a preferred embodiment, the diverter grille cover 4 is preferably fixedly connected to the sleeve 312 via a fixed shaft 41. Fig.10 As shown, the figure schematically shows a preferred solution, the diverter grille cover 4 includes a top plate 43, and the fixed shaft 41 is arranged at the axis center of the bottom of the top plate 43. The fixed shaft 41 is fixedly connected to the top plate 43. The fixed shaft 41 and the top plate 43 can be an integrated structure, or two parts can be fixed by welding or the like. The fixed shaft 41 is preferably inserted into the sleeve 312 and fixedly connected to the sleeve 312. Further preferably, the fixed shaft 41 and the sleeve 312 are threadedly connected.

[0039] The bottom of the top plate 43 is provided with a plurality of flow dividers 44 distributed circumferentially around the fixed shaft 41, and the flow dividers 44 extend downward. Fig.10 and Fig.11 As shown in the figure, a preferred solution is schematically shown, each of the diverter plates 44 is vertically arranged, and a plurality of the diverter plates 44 are distributed at equal angles along the axial direction, and the planes where the diverter plates 44 are located pass through the axis of the top plate 43. In a preferred embodiment, part of the diverter plates 44 extend to the top of the top plate 43 to form reinforcing ribs, which can effectively improve the strength of the diverter grille cover 4. The diverter grille cover 4 can be produced by processes such as aluminum casting or injection molding.

[0040] In a preferred embodiment, a positioning structure 42 may be provided on the fixed shaft 41, so as to limit the depth of the fixed shaft 41 penetrating into the sleeve 312, thereby adjusting the distance between the diverter grille cover 4 and the waterproof membrane 2 or the fixed ring 3. Fig.10As shown in the figure, a preferred solution is schematically shown, the fixed shaft 41 is a screw, and a nut is screwed on the fixed shaft 41 to form the positioning structure 42. By rotating the position of the nut on the fixed shaft 41, the depth of the fixed shaft 41 penetrating into the sleeve 312 can be flexibly adjusted. Of course, the above is only a preferred solution, and the positioning structure 42 can also be in other forms, such as a protruding structure on the fixed shaft 41. Figure 1 What is shown in the figure is a preferred solution, that is, the outer edge size of the flange structure 33 of the fixing ring 3 is larger than the outer edge size of the diverter grille cover 4. By setting a positioning structure 42 on the fixing shaft 41, it is possible to avoid excessive installation of the diverter grille cover 4 when installing the diverter grille cover 4, and to prevent the diverter grille cover 4 from being broken at the welding position of the anti-vortex blade 311 and the diverter grille cover 4 from being squeezed and deformed due to excessive contact between the diverter grille cover 4 and the fixing ring 3. In other embodiments, for example, when the size of the flange structure 33 of the fixing ring 3 is small, it is also possible to provide a certain interval between the diverter grille cover 4 and the waterproof membrane 2, so as to avoid the diverter grille cover 4 scratching the waterproof membrane 2 and causing water leakage due to excessive installation. The diverter plate 44 on the diverter grille cover 4 can play a supporting role as well as a diverting and bypassing role, which can reduce the undercurrent vortex in the roof water collection area and evenly guide the roof water flow into the water collecting bucket 1. In addition, the top of the diverter grille cover 4 is a closed structure, which can also play a role in air isolation, effectively reduce the water level in front of the bucket, that is, the height of water on the roof, quickly start the siphon drainage function, reduce the accumulation of roof load, and improve the safety of the roof. The diverter plate 44 can be designed in different sizes, shapes and specifications, and can play the role of disturbing, diverting, supporting and blocking foreign objects from entering the drainage pipe. When the water flow is diverted by the diverter grille cover 4 to the water collecting bucket 1, the anti-vortex blade 311 will prevent the water flow from forming a vortex again in the water collecting bucket 1, ensuring that the water flow is discharged in the designed partitions.

[0041] In a further preferred embodiment, the water collecting bucket 1 is preferably a bell-shaped mouth, that is, its upper end opening is larger and its lower end opening is smaller, such as Figure 7 As shown. In a specific implementation, the lower end of the water collecting bucket 1 can be connected to a drainage pipe, so as to guide rainwater to a designated location. In order to ensure the sealing between the water collecting bucket 1 and the drainage pipe, a sealing structure 6 can be provided between the water collecting bucket 1 and the drainage pipe. For example Figure 4 As shown in the figure, a sealing ring is sleeved on the water collecting bucket 1. In addition to the sealing effect, the sealing structure 6 can also prevent the drainage backflow caused by too large drainage flow or blockage of the drainage pipe.

[0042] In the specific implementation, the water collecting bucket 1, the waterproof membrane 2, the fixing ring 3, the fixing support structure 5, the anti-vortex blade 311 and the sealing structure 6 are all prefabricated in the factory to form an integrated product. And after strict inspection and testing, such as sealing test, welding strength test and impermeability test, etc., they are shipped out of the factory after passing the inspection. Therefore, when the siphon rainwater bucket of this embodiment arrives at the construction site, there are only two integrated prefabricated products, a diversion grille cover 4 and an integrated prefabricated siphon rainwater bucket body, such as Figure 4 As shown, through a simple assembly construction process, it can be quickly and efficiently installed and applied in a standardized manner. The overall size of the siphon rainwater bucket of this application is flat, which is convenient for later adaptation to drainage pipes of different specifications and diameters, and the versatility of the product is greatly improved; the drainage pipe can be installed in an insertion or screw-on manner according to customer needs and with different connectors.

[0043] The siphon rainwater bucket of the present application adopts an assembled construction process, and the construction process is to first locate and open a hole on the roof; then insert or tighten the siphon rainwater bucket body; then lift the waterproof roll 2, drive it into the sleeve and screw it; then weld the waterproof roll 2 and the roof to seal; finally screw on the diversion grille cover 4. The construction is simple, convenient and fast, and can effectively reduce the overall construction cost.

[0044] This application is mainly for the development of siphonic rainwater buckets for single-layer flexible roofs, which solves the shortcomings of the conventional siphonic rainwater buckets on the market in the application on single-layer roofs. At the beginning of product design, a full survey of design, product and standard specifications was conducted, and the needs of construction, installation, application, use and maintenance were fully considered. Therefore, compared with conventional products on the market, the siphonic rainwater bucket adapted to the single-layer flexible roof of this patent has the characteristics of highly integrated prefabrication, simple and efficient construction, and economical, beautiful and practical, which solves many problems of conventional products such as large materials, difficult installation, and mismatch.

[0045] The siphon rain gutter of the present application adopts highly integrated prefabricated parts, and is standardized and industrially produced and processed in the factory, and implements a full inspection process, so it has better waterproof performance and guaranteed quality; there are fewer materials on site and the installation is simpler; the assembly construction technology is adopted, the difficulty of on-site operation is reduced, the number of process steps is reduced, the construction efficiency is improved, and the construction quality is guaranteed; it is a siphon rain gutter specially designed for single-layer roofs, which meets the requirements of roof characteristics and is easy to install and maintain; it generates siphon at a lower water level in front of the gutter, which can reduce the hidden danger of load increase caused by water accumulation on the roof; it adopts a universal design, which can meet the connection of drainage pipes of different diameters.

[0046] In this document, the terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of elements other than those listed and may also include additional elements not expressly listed.

[0047] In this document, the directional words such as front, back, top, and bottom are defined by the positions of the components in the drawings and the positions of the components relative to each other, and are only for the sake of clarity and convenience in expressing the technical solution. It should be understood that the use of the directional words should not limit the scope of protection claimed in this application.

[0048] In the absence of conflict, the above embodiments and features in the embodiments may be combined with each other.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A siphon rainwater bucket adapted for a single-layer flexible roof, characterized in that: It comprises a water collecting hopper (1), a waterproof coiled material (2), a fixing ring (3) and a diversion grille cover (4); a fixing support structure (5) is radially extended from the top of the water collecting hopper (1); the waterproof coiled material (2) is arranged on the upper side of the fixing support structure (5); the waterproof coiled material (2) extends out of the fixing support structure (5); a through hole (21) is arranged on the waterproof coiled material (2) at the upper end corresponding to the water collecting hopper (1); the fixing ring (3) passes through the through hole (21) and is fixedly connected to the water collecting hopper (1); the fixing ring (3) limits the waterproof coiled material (2) on the side of the waterproof coiled material (2) away from the fixing support structure (5); an anti-vortex structure (31) is arranged inside the fixing ring (3); and the diversion grille cover (4) is arranged above the fixing ring (3).

2. The siphon rain gutter adapted for a single-layer flexible roof according to claim 1, characterized in that: The water collecting bucket (1) and the fixed supporting structure (5) are an integrated structure; or The water collecting bucket (1) and the fixed support structure (5) are split structures, and the fixed support structure (5) is fixedly connected to the water collecting bucket (1).

3. The siphon rain gutter adapted for a single-layer flexible roof according to claim 1, characterized in that: The circumferential wall of the fixing ring (3) is provided with a stop surface (32); when the fixing ring (3) is fixedly connected to the water collecting bucket (1), the stop surface (32) is in close contact with the waterproof coiled material (2).

4. The siphon rain gutter adapted for a single-layer flexible roof according to claim 1, characterized in that: The anti-vortex structure (31) comprises a plurality of circumferentially distributed anti-vortex blades (311), one end of each of the anti-vortex blades (311) being fixedly connected to the fixing ring (3), and the other ends of each of the anti-vortex blades (311) being extended inwardly and fixedly connected.

5. The siphon rain gutter adapted for a single-layer flexible roof according to claim 4, characterized in that: The anti-vortex structure (31) further comprises a sleeve (312), a plurality of the anti-vortex blades (311) are arranged around the sleeve (312), the inner ends of the anti-vortex blades (311) are fixedly connected to the sleeve (312), and the outer ends of the anti-vortex blades (311) are fixedly connected to the fixing ring (3).

6. The siphon rain gutter adapted for a single-layer flexible roof according to claim 5, characterized in that: The diverter grille cover (4) is provided with a fixed shaft (41), and the fixed shaft (41) is passed through the sleeve (312) and fixedly connected to the sleeve (312).

7. The siphon rain gutter adapted for a single-layer flexible roof according to claim 6, characterized in that: The fixed shaft (41) is threadedly connected to the sleeve (312).

8. The siphon rain gutter adapted for a single-layer flexible roof according to claim 6, characterized in that: The fixed shaft (41) is provided with a positioning structure (42).

9. The siphon rain gutter adapted for a single-layer flexible roof according to claim 1, characterized in that: The flow splitter grille cover (4) comprises a top plate (43) and a plurality of flow splitter plates (44) circumferentially distributed at the bottom of the top plate (43), wherein the plurality of flow splitter plates (44) extend downward.

10. The siphon rain gutter adapted for a single-layer flexible roof according to claim 1, characterized in that: The water collecting bucket (1) is also provided with a sealing structure (6).

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