Anti-blocking quick drainage structure of flat roof drainage system

Abstract

The invention provides an anti-blocking quick drainage structure of a drainage system of a flat roof. A drainage transition area and a sundry intercepting and filtering area are divided from a slope starting point of the flat roof to an eave of the flat roof, the lower side of the sundry intercepting and filtering area is close to a water falling opening of the flat roof, and the sundry intercepting and filtering area further comprises a sundry intercepting section, a sundry filtering section and a two-step drainage section. The sundry intercepting section bypasses the edge position of the sundry intercepting and filtering area and separates the sundry intercepting and filtering area from the drainage transition area, and the sundry intercepting section is separated from the two-stage stepped drainage section through the sundry filtering section; the impurity filtering section is provided with a gabion box filtering assembly which is formed by wrapping pebbles with reinforcing meshes. According to the anti-blocking quick-drainage structure of the flat roof drainage system, the comprehensive drainage efficiency of the flat roof is greatly improved, meanwhile, the risks of rainwater accumulation and gutter inlet blocking are reduced, and the hidden danger of roof water leakage is greatly reduced. It is effectively guaranteed that rainwater, accumulated water and the like on the flat roof reach the rapid drainage state.

Description

Technical Field

[0001] The present invention relates to the technical field of building roof drainage, and specifically to an anti-blocking and fast-draining structure for a drainage system suitable for flat roofs. By optimizing the drainage slope and adding a filtering and intercepting device, the functions of efficient drainage and debris interception are realized. Background Art

[0002] Traditional flat roof drainage systems mostly adopt natural drainage with a single slope, and are easily blocked by debris such as fallen leaves and sediment at the water outlets, resulting in poor drainage and causing problems such as leakage and water accumulation. In the prior art, although there are solutions such as setting a local slope or a simple filter screen around the water outlet, there are problems of a single slope, insufficient water flow velocity, and easy water accumulation around the water outlet.

[0003] The patent with the application number CN99124026.X discloses an assembled waterproof flat roof that adopts a multi-layer independent waterproof and drainage system. The waterproof material uses inorganic board materials and non-water-absorbing thermal insulation materials, and is constructed by an assembled structure. It can be disassembled and reused repeatedly. Through independent main and secondary drainage systems, the operation effect of the roof waterproof layer can be conveniently observed, and waterproof defects can be found through a simple inflation method, and disassembly and maintenance can be carried out conveniently.

[0004] However, the above patent technology not only has the problems of easy blockage and difficult cleaning of the filtering device, but also lacks a grading interception mechanism for debris, and fine particles may still enter the drainage pipeline. In view of the above problems, the present invention proposes a comprehensive drainage structure combining a stepped drainage slope, an intercepting trench and a gabion filter assembly, which significantly improves the drainage efficiency and reduces the maintenance cost. Summary of the Invention

[0005] The purpose of the present invention is to provide an anti-blocking and fast-draining structure for a flat roof drainage system to solve the problems raised in the above background art:

[0006] (1) How to solve the problems of blockage, slow drainage, and leakage hidden dangers of traditional drainage systems through zonal interception, grading filtration, and stepped drainage slope design.

[0007] To achieve the above purpose, the present invention provides the following technical solutions:

[0008] An anti-blocking and fast-draining structure for a flat roof drainage system;

[0009] The area from the slope starting point of the flat roof to the eaves of the flat roof is divided into a drainage transition area and a debris interception and filtration area. The lower side of the debris interception and filtration area is close to the position of the water outlet of the flat roof. The debris interception and filtration area further includes a debris interception section, a debris filtration section, and a secondary stepped drainage section. The debris interception section bypasses the edge position of the debris interception and filtration area and separates the debris interception and filtration area from the drainage transition area. The debris interception section and the secondary stepped drainage section are separated by the debris filtration section. The secondary stepped drainage section includes a first-stage stepped drainage slope and a second-stage stepped drainage slope. The end of the second-stage stepped drainage slope is connected to the water outlet of the flat roof. The second-stage stepped drainage slope and the debris filtration section are separated by the first-stage stepped drainage slope. The slope of the second-stage stepped drainage slope is greater than that of the first-stage stepped drainage slope.

[0010] A gabion mesh filtration component is provided on the debris filtration section. The gabion mesh filtration component is formed by wrapping pebbles with a steel wire mesh.

[0011] Based on the above technical solutions, the present invention can be further improved as follows.

[0012] Further, the slope of the second-stage stepped drainage slope is 6%, and the slope of the first-stage stepped drainage slope is 4%.

[0013] Further, anti-cracking mortar is poured on the surface of the drainage transition area of the flat roof as a fine aggregate concrete protective layer. The debris interception section between the anti-cracking mortar in the drainage transition area and the gabion mesh filtration component forms a debris interception trench.

[0014] Further, a high gabion positioning sill is poured on the debris filtration section of the flat roof. The upper end surface of the high gabion positioning sill is flat, and the gabion mesh filtration component is placed on the high gabion positioning sill.

[0015] Further, a waterproof coating is also laid on the surface of the flat roof. One side of the waterproof coating extends into the drainage transition area of the flat roof, and the other side extends onto the first-stage stepped drainage slope of the debris interception and filtration area.

[0016] Further, the waterproof coating includes a butyl rubber non-curing waterproof coating additional layer and a butyl rubber polymer self-adhesive waterproof coiled material additional layer.

[0017] The anti-blocking and fast-draining structure of this flat roof drainage system forms a debris interception groove between the fine aggregate concrete protective layer and the gabion mesh on the roof waterproofing membrane, combined with the filtering section of the gabion mesh filtering component. By setting the secondary stepped drainage section within a certain range from the water outlet, the three treatment methods of interception, filtration, and drainage are comprehensively utilized, greatly improving the comprehensive drainage efficiency of the flat roof. At the same time, it reduces the risk of rainwater accumulation and water outlet blockage, and significantly reduces the potential for roof leakage. It effectively ensures that rainwater and accumulated water on the flat roof reach a state of rapid drainage, with good economic and social benefits.

[0018] The beneficial technical effects of the anti-blocking and fast-draining structure of this flat roof drainage system are as follows:

[0019] (1) By intercepting the groove and gabion grading filtration, the risk of water outlet blockage is reduced;

[0020] (2) The design of the secondary stepped drainage slope accelerates the water flow and avoids dampness and leakage;

[0021] (3) The modular structure facilitates debris cleaning and maintenance;

[0022] (4) The waterproof coating and the crack-resistant mortar protective layer synergistically enhance the durability of the roof. Description of the Drawings

[0023] Figure 1 is the top view of the embodiment of the anti-blocking and fast-draining structure of this flat roof drainage system.

[0024] Figure 2 is Figure 1 the sectional view along the A-A direction.

[0025] Figure 3 is Figure 2 the enlarged view of part B of

[0026] Figure 4 is the perspective view of the embodiment of the anti-blocking and fast-draining structure of this flat roof drainage system.

[0027] Description of the reference numerals in the drawings:

[0028] Drainage transition area - 100; Debris interception and filtration area - 200; Debris interception section - 210; Debris filtration section - 220; First-stage stepped drainage slope - 231; Second-stage stepped drainage slope - 232; Fine aggregate concrete protective layer - 300; High gabion positioning sill - 400; Gabion mesh filtering component - 500; Waterproof coating - 600; Debris interception groove - 700. Detailed Implementation Modes

[0029] To make the above objects, features, and advantages of the present invention more apparent and understandable, the following detailed description of the specific embodiments of the present invention will be given in conjunction with the accompanying drawings. A lot of specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0030] As used herein, the terms "vertical", "horizontal", "left", "right", and similar expressions are for illustrative purposes only and do not represent the only embodiments.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0032] Please refer to Figures 1 to 4 。

[0033] The anti-blocking and fast-draining structure of the flat roof drainage system divides the area from the slope starting point of the flat roof to the eaves of the flat roof into a drainage transition area 100 and a debris interception and filtration area 200, and the lower side of the debris interception and filtration area 200 is close to the position of the water outlet of the flat roof.

[0034] The debris interception and filtration area 200 further includes a debris interception section 210, a debris filtration section 220, and a secondary stepped drainage section. The debris interception section 210 bypasses the edge position of the debris interception and filtration area 200 and separates the debris interception and filtration area 200 from the drainage transition area 100. The debris interception section 210 and the secondary stepped drainage section are separated by the debris filtration section 220. The secondary stepped drainage section includes a first-stage stepped drainage slope 231 and a second-stage stepped drainage slope 232. The end of the second-stage stepped drainage slope 232 is connected to the water outlet of the flat roof. The second-stage stepped drainage slope 232 and the debris filtration section 220 are separated by the first-stage stepped drainage slope 231. The slope of the second-stage stepped drainage slope 232 is greater than that of the first-stage stepped drainage slope 231. The slope of the second-stage stepped drainage slope 232 is 6%, and the slope of the first-stage stepped drainage slope 231 is 4%.

[0035] Pour anti-cracking mortar on the surface of the drainage transition area 100 of the flat roof as the fine stone concrete protective layer 300.

[0036] A high stone cage positioning sill 400 is cast on the sundry filtering section 220 of the flat roof. The upper end surface of the high stone cage positioning sill 400 is a plane. The gabion mesh filtering component 500 is placed on the high stone cage positioning sill 400. The gabion mesh filtering component 500 is formed by wrapping pebbles with a steel wire mesh. The sundry interception section 210 between the fine stone concrete protective layer 300 in the drainage transition area 100 and the gabion mesh filtering component 500 forms a sundry interception trench 700.

[0037] A waterproof coating 600 is also laid on the surface of the flat roof. One side of the waterproof coating 600 extends into the drainage transition area 100 of the flat roof, and the other side of the waterproof coating 600 extends onto the first-stage stepped drainage slope 231 of the sundry interception and filtering area 200.

[0038] The waterproof coating 600 includes a butyl rubber non-curing waterproof coating additional layer and a butyl rubber polymer self-adhesive waterproof coiled material additional layer.

[0039] The anti-blocking and fast-draining structure of the flat roof drainage system in this case changes the traditional roof drainage measures that rely on natural flow. Through the interception trench section and gabion mesh filtering section formed by enclosing between the fine stone concrete protective layer 300 (leveled with anti-cracking mortar on the top) on the roof coiled material and the pebble gabion mesh, larger sundries such as stones and leaves, and fine particles such as sediment are intercepted at a place far from the water outlet in stages, facilitating the collection and secondary cleaning of sundries. At the same time, the conventional single drainage method with a slope of 5% within a range of 500 mm in diameter around the water outlet is optimized. A secondary stepped drainage section with slopes of 6% and 4% is respectively set within a range of 700 mm and 700 mm - 1200 mm from the water outlet, greatly accelerating the water flow velocity around the water outlet of the flat roof and reducing potential problems such as dampness and leakage caused by water accumulation around the water outlet.

[0040] The technological process of the anti-blocking and fast-draining structure of the flat roof drainage system in this case includes the following steps:

[0041] a) Drainage by slope. Taking the horizontal elevation perpendicular to the parapet wall at 3000 mm as the positive ridge, make an anti-cracking mortar slope section towards the two water outlets; the bottom elevation of the slope section is the same as the bottom elevation of the drainage transition section.

[0042] b) Positioning and snapping lines. Within a range of 3000 mm × 3000 mm around the water outlet, use a laser level and a handheld laser rangefinder to respectively position the outer boundary line of the flat roof fast drainage system; ① the upper mouth line of the sundry interception section 210; ② the outer boundary line of the sundry filtering section 220 of the flat roof; ③ the demarcation line of the secondary stepped drainage slope ratios of 6% and 4%, and use a chalk line to snap the construction control lines.

[0043] c) Construction of the waterproof additional layer: One end of the 1.5-mm butyl rubber non-curing waterproof coating additional layer and the 1.2-mm butyl rubber polymer self-adhesive waterproof coiled material additional layer is pasted 300 mm above the upper edge line of the interception trench. Before the placement of the concrete surface layer for the other end on the flat roof, the construction techniques of scraping and pre-laying and reverse adhesion are respectively used to paste the non-curing waterproof coating and the self-adhesive waterproof coiled material at 300 mm above the upper part of the second-level stepped drainage slope 232.

[0044] d) Making of the crack-resistant mortar ash cakes: According to the size requirements of the drainage transition area 100 and the debris interception and filtration area 200 of the flat roof, the crack-resistant mortar ash cakes for each part are made (since the thickness of the high gabion positioning sill 400 is limited, the cement slurry with a strength grade of 42.5 is used instead). The spacing of the ash cakes is 0.5 m.

[0045] e) Pouring of the M7.5 crack-resistant mortar slope layer: According to the size requirements of the schematic diagram of the rapid drainage structure section of the flat roof and in combination with the made crack-resistant mortar ash cakes, the M7.5 crack-resistant mortar surface layer is poured. The artificial steel trowel is used to smear and press the surface layer in an orderly and same-direction force, and all the smear marks are pressed flat and polished to make the surface of the surface layer dense and smooth.

[0046] f) Fabrication and placement of the gabion: Select pebbles with a particle size distribution of 16 - 50 mm, and the pebbles should be larger at the top and smaller at the bottom. The outer periphery is respectively wrapped with double-layer wire mesh sheets of Ф0.9@100 and Ф4@100 from the inside to the outside, and the wire mesh sheets should be firmly welded to form a gabion.

[0047] g) Curing: Water curing is carried out 24 hours after the crack-resistant mortar surface layer is smeared and pressed. It is carried out at least twice a day to ensure that the concrete surface is in a moist state, and the curing time shall not be less than 7 days.

[0048] The above is only one implementation mode of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several variations and improvements can be made, and these should also be regarded as belonging to the protection scope of the present invention.

Claims

1. An anti-blocking and fast-draining structure for a flat roof drainage system, characterized in that: The area from the slope starting point of the flat roof to the eaves of the flat roof is divided into a drainage transition area (100) and a debris interception and filtration area (200). Near the position of the water inlet of the flat roof on the lower side of the debris interception and filtration area (200), the debris interception and filtration area (200) further includes a debris interception section (210), a debris filtration section (220) and a secondary stepped drainage section. The debris interception section (210) bypasses the edge position of the debris interception and filtration area (200) and separates the debris interception and filtration area (200) from the drainage transition area (100). The debris interception section (210) is separated from the secondary stepped drainage section by the debris filtration section (220). The secondary stepped drainage section includes a first-stage stepped drainage slope (231) and a second-stage stepped drainage slope (232). The end of the second-stage stepped drainage slope (232) is connected to the water inlet of the flat roof. The second-stage stepped drainage slope (232) is separated from the debris filtration section (220) by the first-stage stepped drainage slope (231). The slope of the second-stage stepped drainage slope (232) is greater than the slope of the first-stage stepped drainage slope (231); The debris filtration section (220) is provided with a gabion mesh filtration component (500), and the gabion mesh filtration component (500) is formed by wrapping pebbles with a steel wire mesh.

2. The anti-blocking and fast-draining structure for a flat roof drainage system according to claim 1, characterized in that: The slope of the second-stage stepped drainage slope (232) is 6%, and the slope of the first-stage stepped drainage slope (231) is 4%.

3. The anti-blocking and fast-draining structure for a flat roof drainage system according to claim 1, characterized in that: Anti-cracking mortar is poured on the surface of the drainage transition area (100) of the flat roof as a fine stone concrete protective layer (300). The debris interception section (210) between the anti-cracking mortar in the drainage transition area (100) and the gabion mesh filtration component (500) forms a debris interception trench (700).

4. The anti-blocking and fast-draining structure for a flat roof drainage system according to claim 1, characterized in that: A high gabion positioning sill (400) is poured on the debris filtration section (220) of the flat roof. The upper end surface of the high gabion positioning sill (400) is a plane, and the gabion mesh filtration component (500) is placed on the high gabion positioning sill (400).

5. The anti-blocking and fast-draining structure for a flat roof drainage system according to claim 1, characterized in that: A waterproof coating (600) is also laid on the surface of the flat roof. One side of the waterproof coating (600) extends into the drainage transition area (100) of the flat roof, and the other side of the waterproof coating (600) extends onto the first-stage stepped drainage slope (231) of the debris interception and filtration area (200).

6. The anti-blocking and fast-draining structure for a flat roof drainage system according to claim 1, characterized in that: The waterproof coating (600) includes a butyl rubber non-curing waterproof coating additional layer and a butyl rubber high molecular self-adhesive waterproof coiled material additional layer.

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