Double-layer outfall structure for roof waterproof and drainage

Abstract

The utility model provides a double-layer outfall structure for roof water prevention and drainage, and belongs to the technical field of roof water prevention and drainage. In order to solve the problem that the waterproof effect of a roof is difficult to guarantee due to the fact that roof anti-seepage measures of an existing roof drainage structure are not in place, the roof drainage structure comprises a lower-layer drainer, an upper-layer water falling device and a drainage plate, the lower-layer drainer is pre-buried in a structural plate of the roof, and the drainage plate is arranged on the lower-layer drainer. The upper-layer water falling device is detachably connected with the lower-layer water drainer through a mounting assembly, and rainwater of the roof surface layer is drained through the upper-layer water falling device. By means of the double-layer water falling opening structure combining the lower-layer water drainer and the upper-layer water drainer, the effect that rainwater on the surface layer of the roof and accumulated water leaking to the roof board are drained at the same time is achieved, the lower-layer water drainer and the upper-layer water drainer can be conveniently and rapidly installed and detached through the installation assembly, and later maintenance and replacement are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of roof drainage prevention and drainage, in particular to a double-layer downspout structure used for roof drainage prevention and drainage. Background Art

[0002] At present, in order to reduce the weight of the roof, reduce the project cost, and improve the degree of roof prefabrication and assembly, reinforced concrete flat roofs are generally used, mainly prefabricated circular hole roof panels and cast-in-place reinforced concrete roof panels. Flat roofs have low cost, convenient construction, simple structure, and simple appearance. They are suitable for building planes of various shapes and sizes. Currently, this type of roof is the most widely used.

[0003] In roof waterproofing projects, the industry requires that the waterproofing environment category be Class I and the waterproofing level be Level I, with three lines of defense. At least one line should be set on the roof panel, and a flexible waterproof coating should be used. The other two lines should be set adjacent to each other and should have exhaust channels and double-layer drainage outlets. The project waterproofing follows the traditional defense idea of ​​"combining prevention and drainage, prevention as the main focus, and both rigidity and flexibility".

[0004] However, in the on-site construction process of roof waterproofing, the common construction process is that the cup mouth of the pre-buried downspout is higher than the roof panel, which can only discharge rainwater from the roof surface layer, and the main focus is on prevention, without combining prevention and drainage. The roof anti-leakage measures are not in place, making it difficult to ensure the roof waterproofing effect, so that the roof water seepage problem has become a major problem in the construction industry. Therefore, setting up a downspout structure that can simultaneously discharge rainwater from the roof surface layer and accumulated water flowing to the roof panel has a large market application prospect in this field. Summary of the invention

[0005] In order to solve the problems existing in the above-mentioned prior art, the utility model aims to propose a double-layer downspout structure for roof drainage, which changes the traditional vertical downspout and utilizes the lower drainer and the upper drainer to form a double-layer downspout structure, so as to achieve the purpose of draining rainwater from the roof surface layer and accumulated water leaking into the roof panel.

[0006] In order to achieve the above technical objectives, the utility model adopts the following technical solutions:

[0007] A double-layer downspout structure for roof drainage comprises a lower drain, an upper downspout and a drain plate, wherein the lower drain is pre-buried in a structural plate of the roof, the drain plate is arranged on the lower drain, the upper downspout is detachably connected to the lower drain via an installation assembly, and rainwater on the roof surface is discharged via the upper downspout.

[0008] A further preferred embodiment of the above technical solution is as follows: the lower drainer comprises a diameter pipe section and a diameter-reducing pipe section connected to the top thereof, and the upper drainer is arranged in the diameter-reducing pipe section.

[0009] A further preferred solution is that the pipe opening of the variable diameter pipe section is extended outwardly to be provided with an edge.

[0010] By adopting the above solution, further, the drain plate is connected to 20 mm below the pipe opening of the reducer pipe section, and a plurality of drain holes are evenly opened on the drain plate.

[0011] A further preferred embodiment of the above technical solution is that the installation assembly includes at least one group of limit plates and positioning members, one group of limit plates is arranged on the drain plate and located on the inner side of the drain hole, the positioning member is connected to the outer side of the pipe wall of the upper water dropper, and the positioning member cooperates with a group of limit plates.

[0012] A further preferred embodiment of the above technical solution is that the installation assembly includes at least one limiting hole and a T-shaped piece, the limiting hole is opened on the drain plate and is located inside the drain hole, the T-shaped piece is connected to the outside of the pipe wall of the upper water dropper, and the T-shaped piece cooperates with the limiting hole.

[0013] Compared with the prior art, the advantages and beneficial effects of the utility model are:

[0014] 1. By setting up a lower drain and an upper downspout, the traditional vertical downspout is decomposed into an upper and lower drainage structure. The downspout of the lower drain is pre-buried in the structural board of the roof, and the upper downspout is connected to the lower drain through a drain plate. By adding a drain outlet at the elevation of the roof structural board, the accumulated water that leaks into the roof structure layer can flow down from the drain hole to the lower drain for discharge. The rainwater on the roof surface enters the lower drain from the upper downspout and is then discharged, achieving the effect of combining roof waterproofing and drainage, greatly reducing roof leakage.

[0015] 2. The lower drain of the utility model adopts a structure in which a reducing pipe section and a diameter pipe section are matched. The diameter of the reducing pipe section is larger than the pipe diameter at the lower end of the upper drain, which is convenient for synchronously draining the water flow that simultaneously enters the reducing pipe section through the drainage hole and the upper drain, thereby achieving the effect of synchronous and rapid drainage.

[0016] 3. By arranging mutually cooperating installation components on the lower drain and the upper drain, the upper drain can be quickly and stably limited on the lower drain. The use of this quick-release and quick-install installation component facilitates the rapid installation and disassembly of the upper drain and the lower drain, which is beneficial to later maintenance and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for use in the embodiments.

[0018] Figure 1 This is a schematic diagram of the overall structure of a double-layer downspout structure for roof drainage according to the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the lower drainer in Example 1 of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the upper water dropper in Example 1 of the utility model;

[0021] Figure 4 This is a schematic diagram of the overall structure of Example 2 of the utility model;

[0022] Figure 5 It is an exploded view of the connection relationship between the lower drain and the upper water dropper of Example 2 of the utility model;

[0023] In the figure: 1-lower drain; 11-diameter pipe section; 12-variable pipe section; 121-edge; 2-upper drain; 3-installation assembly; 31-limiting plate; 32-positioning piece; 33-limiting hole; 34-T-shaped piece; 4-drainage plate; 41-drainage hole; 42-through hole. DETAILED DESCRIPTION

[0024] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. In the following description, many specific details are set forth to facilitate a full understanding of the utility model, but the utility model can also be implemented in other ways different from those described herein, and therefore, the utility model is not limited to the limitations of the specific embodiments of the following disclosure.

[0025] refer to Figure 1-3 The utility model proposes a double-layer downspout structure for roof drainage, comprising a lower drain 1, an upper downspout 2 and a drain plate 4, wherein the upper downspout 2 is an existing finished product 87-type stainless steel rain funnel, and the lower drain 1 is pre-buried in the structural plate of the roof, that is, before the concrete structural plate of the roof is cast as a whole, the lower drain 1 is arranged at an appropriate position according to the designed position, and after the concrete structural plate of the roof is cast and formed, the downspout of the lower drain 1 is flush with the elevation of the structural plate of the roof, so that the accumulated water on the structural plate of the roof can be discharged downwardly through the lower drain 1, and the drain plate 4 is arranged on the lower drain 1, and the upper downspout 2 is detachably connected to the lower drain 1 through the mounting assembly 3, and the rainwater on the roof surface layer is discharged through the upper downspout 3. Therefore, the lower drain 1 of the present application can be combined with the upper downspout 2 to simultaneously discharge the rainwater on the roof surface layer and the accumulated water on the structural plate that has infiltrated into the roof, thereby effectively reducing the occurrence of roof leakage.

[0026] like Figure 2As shown, the lower drain 1 is made of stainless steel, and includes a diameter pipe section 11 and a reducer pipe section 12. The reducer pipe section 12 is welded to the top of the diameter pipe section 11. The pipe mouth of the reducer pipe section 12 extends outward and is provided with a rim 121. When the concrete structural slab of the roof is poured, the rim 121 is completely buried in the concrete structural slab of the roof, thereby increasing the overall stability of the lower drain 1 in the roof structural slab.

[0027] Further, refer to Figure 1-2 The drain plate 4 is welded to the inside of the reducing pipe section 12. The drain plate 4 is a steel plate ring with a thickness of 2 mm. The outer ring of the drain plate 4 is an arc-shaped slope that matches the inner wall of the reducing pipe section 12. The drain plate 4 is connected 20 mm below the pipe mouth of the reducing pipe section 12. A through hole 42 is opened in the center of the drain plate 4, and the diameter of the through hole 42 is matched with the pipe diameter of the lower end of the upper water dropper 2. A plurality of circular drain holes 41 are evenly opened circumferentially on the drain plate 4. The upper water dropper 2 is connected to the drain plate 4 through the through hole 41, and the bottom of the upper water dropper 2 is located inside the reducing pipe section 12.

[0028] For the installation component 3 of the utility model, a variety of structures can be set to implement it, which is specifically described through the following two embodiments. It should be understood that the following embodiments are only partial examples and should not be understood as structural limitations on the installation component 3. All deformations, modifications, etc. made on this basis should be covered within the scope of protection of this application. Example 1

[0029] like Figure 2-3 As shown, the installation assembly 3 includes at least one group of limit plates 31 and positioning members 32. The limit plates 31 are made of stainless steel, and the positioning members 32 are made of Ф8 steel bar heads with a length of 20 mm. In the present embodiment, in order to increase the stability after the upper water dropper 2 is connected to the lower drain 1, three groups of limit plates 31 are provided, and each group of limit plates 31 includes two. Correspondingly, three positioning members 32 are also provided. The three groups of limit plates 31 are evenly welded on the top of the drain plate 4 and are located on the inner side of the drain hole 41. The positioning members 32 are evenly welded on the outer side of the pipe wall of the upper water dropper 2. When the upper water dropper 2 is connected to the lower drain 1, the upper water dropper 2 is slowly dropped so that the positioning members 32 at the lower end of the pipe are correspondingly clamped between each group of limit plates 31, and the positioning members 32 just fall to the top of the drain plate 4 at this time, which plays a role in stabilizing the limit of the upper water dropper 2. Example 2

[0030] like Figure 4-5As shown, the installation component 3 includes at least one limiting hole 33 and a T-shaped piece 34. The T-shaped piece 34 adopts a Ф8 steel bar head. In this embodiment, in order to increase the stability after the upper water dropper 2 is connected to the lower drain 1, three limiting holes 33 are provided, and correspondingly, three T-shaped pieces 34 are also provided. The limiting holes 33 are evenly opened on the top of the drain plate 4 and are located on the inner side of the drain hole 41. The T-shaped piece 34 is evenly welded to the outer side of the pipe wall of the upper water dropper 2. When the upper water dropper 2 is connected to the lower drain 1, the upper water dropper 2 is slowly dropped so that the T-shaped piece 34 at the lower end of the pipe wall is correspondingly clamped in each limiting hole 33, which plays a role in stabilizing the limiting position of the upper water dropper 2.

[0031] A double-layer downspout structure for roof drainage, in practical application:

[0032] First, according to the design requirements, the lower drain 1 is arranged on the roof structure layer where concrete has not been poured. The height of the water outlet of the lower drain 1 is the same as the elevation of the roof structure plate, so that the mouth edge of the poured lower drain 1 is pre-buried in the roof structure plate, and the accumulated water on the roof structure plate can be discharged through the lower drain 1;

[0033] Then, the lower end of the upper water dropper 2 is inserted into the lower drain 1 through the through hole 42, and the upper water dropper 2 is stably installed on the lower drain 1 through the cooperation of the limiting plate 31 and the positioning member 32 in Example 1 or the cooperation of the limiting hole 33 and the T-shaped member 34 in Example 2, and the gap between the upper water dropper 2 and the drain plate 4 at the through hole 42 is sealed with waterproof glue;

[0034] Finally, the insulation layer, slope layer, leveling layer, waterproof layer, etc. on the upper layer of the roof structure board are constructed in sequence, so that the downspout of the upper downspout 2 is at the same height as the leveling layer. At this point, the installation is completed, and the accumulated water on the roof structure board is discharged through the lower drain 1, and the rainwater on the roof surface layer is discharged through the upper drain 2. Therefore, the utility model can simultaneously discharge rainwater on the roof surface layer and accumulated water that has penetrated into the roof structure board, effectively reducing the problem of roof leakage.

[0035] It should be clear that the above detailed description of the embodiments of the utility model provided in the accompanying drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Claims

1. A double-layer downspout structure for roof drainage, characterized in that: The invention comprises a lower drain (1), an upper downspout (2) and a drain plate (4); the lower drain (1) is pre-buried in a structural plate of a roof; the drain plate (4) is arranged on the lower drain (1); the upper downspout (2) and the lower drain (1) are detachably connected via an installation assembly (3); rainwater on the roof surface is drained via the upper downspout (2).

2. A double-layer downspout structure for roof drainage according to claim 1, characterized in that: The lower drain (1) comprises a diameter pipe section (11) and a diameter reducing pipe section (12) connected to the top thereof, and the upper drain (2) is arranged inside the diameter reducing pipe section (12).

3. A double-layer downspout structure for roof drainage according to claim 2, characterized in that: The pipe mouth of the reducing pipe section (12) is extended outwardly and is provided with a mouth edge (121).

4. A double-layer downspout structure for roof drainage according to claim 3, characterized in that: The drain plate (4) is connected to a position 20 mm below the pipe opening of the reducer pipe section (12), and a plurality of drain holes (41) are evenly arranged on the drain plate (4).

5. A double-layer downspout structure for roof drainage according to claim 4, characterized in that: The mounting assembly (3) comprises at least one set of limit plates (31) and positioning members (32); the set of limit plates (31) is arranged on the drain plate (4) and is located inside the drain hole (41); the positioning member (32) is connected to the outside of the pipe wall of the upper water dropper (2); and the positioning member (32) cooperates with the set of limit plates (31).

6. A double-layer downspout structure for roof drainage according to claim 5, characterized in that: The mounting assembly (3) comprises at least one limiting hole (33) and a T-shaped piece (34); the limiting hole (33) is formed on the drain plate (4) and is located inside the drain hole (41); the T-shaped piece (34) is connected to the outside of the pipe wall of the upper water dropper (2), and the T-shaped piece (34) cooperates with the limiting hole (33).

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