Building roof drainage system

Abstract

The invention relates to a building roof drainage system, which is used for adapting to a building roof construction form to respectively drain water on a roof top and an internal coiled material waterproof layer, and comprises an inner drainage hopper arranged on the roof top and used for collecting rainwater on the roof top and the coiled material waterproof layer top, the inner drainage hopper comprises a water inlet and a water outlet; the outer drainage hopper is arranged on the side portion of the roof and used for collecting rainwater on the top of the roof and the top of the coiled material waterproof layer, and the outer drainage hopper comprises a water inlet and a water outlet; according to the roof drainage system, the inner drainage hopper and the outer drainage hopper which form the roof drainage system cooperate with each other, drainage on the coiled material waterproof layers at the top of the roof and in the roof can be conducted, rainwater on the roof can be collected and drained in a centralized mode, and the situation that the drainage capacity of the drainage system is affected due to cracks of a roof top protection layer is avoided; and the problem that rainwater is accumulated on the roof top and a coiled material waterproof layer in the roof is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and particularly refers to a building roof drainage system. Background Art

[0002] With the development of society and the continuous improvement of the scientific and technological level, people's living standards have been greatly improved and enhanced. At the same time, higher requirements have been put forward for the quality of life. In the field of building construction, which is inseparable from people's lives, the construction quality, construction efficiency, and building waterproof performance of buildings have attracted more and more attention. In the existing residential building structures, the roof construction design is divided into two structures: the positive roof and the inverted roof. The structure of the positive roof is the structural layer 22, the lightweight aggregate slope finding and leveling layer 23, the vapor barrier layer 24, the insulation layer 25, the mortar leveling layer 26, the coiled material waterproof layer 27, and the concrete protection layer 28. The roof structure design is as shown in the appendix Figure 7 shown; the structure of the inverted roof is the structural layer 22, the lightweight aggregate slope finding and leveling layer 23, the coiled material waterproof layer 27, the insulation layer 25, the mortar leveling layer 26, and the concrete protection layer 28. The roof structure design is as shown in the appendix Figure 8 shown; the main difference between the two is the different installation positions of the coiled material waterproof layer.

[0003] Regardless of the form of the roof structure, its drainage capacity depends on the drainage system formed after construction. The existing drainage systems generally only consider the drainage capacity at the top of the roof and ignore the situation where rainwater seeps into the coiled material waterproof layer and the structural layer due to cracks in the roof protection layer. The long-term accumulation of rainwater on the coiled material waterproof layer and the structural layer will cause the problem of roof water seepage. Summary of the Invention

[0004] The purpose of the present invention is to overcome the defects of the prior art and provide a building roof drainage system to solve the problem of easy water seepage on the roof caused by the single drainage function of the existing roof drainage system.

[0005] To achieve the above purpose, the present invention provides a building roof drainage system for draining water on the top and the internal coiled material waterproof layer of the building roof according to the building roof structure form. The drainage system includes:

[0006] An internal drainage hopper, arranged at the top of the roof, for collecting rainwater on the top of the roof and the top of the coiled material waterproof layer. The internal drainage hopper includes a water inlet and a water outlet;

[0007] An external drainage hopper, arranged at the side of the roof, for collecting rainwater on the top of the roof and the top of the coiled material waterproof layer. The external drainage hopper includes a water inlet and a water outlet;

[0008] Wherein, the water outlets of the internal drainage hopper and the external drainage hopper are respectively connected to the drainage pipes to jointly achieve the collection and discharge of roof rainwater.

[0009] By adopting this technical solution, the internal drain bucket and the external drain bucket that make up the roof drainage system cooperate with each other, and both can drain water on the rolled waterproof layer at the top and inside of the roof, enabling the rainwater on the roof to be concentratedly collected and discharged. It will not affect the drainage capacity of the drainage system due to cracks in the top protection layer of the roof, avoiding the problem of rainwater accumulation on the rolled waterproof layer at the top and inside of the roof, greatly reducing the probability of roof seepage, and being able to adapt to different roof structural forms at the same time, with good versatility and application prospects.

[0010] Furthermore, the internal drain bucket includes an outer pipe and an inner pipe whose top and bottom respectively form the water inlet and the water outlet, a rainwater bucket cap placed at the opening position of the top end of the inner pipe, a wire cage arranged between the outer pipe and the inner pipe, and a connecting piece that connects the outer pipe, the wire cage, the inner pipe, and the rainwater bucket cap into an integral body from bottom to top;

[0011] Both the outer pipe and the inner pipe are pipe bodies with a disk integrally connected to the outside of the top end, and the outer pipe is sleeved on the outer side of the lower part of the inner pipe;

[0012] The wire cage is clamped between the disk at the top end of the outer pipe and the disk at the top end of the inner pipe, and the upper pipe body of the inner pipe is located inside the wire cage.

[0013] By adopting this technical solution, the outer pipe and the inner pipe form two coaxial drainage paths, and their top and bottom respectively form the water inlet and the water outlet of the internal drain bucket. On the premise that the disk at the top end of the outer pipe is flush with the surface of the roof structural layer, by changing the installation height of the inner pipe through the cooperation of the wire cage and the connecting piece, it can adapt to different roof structural forms to drain water on the rolled waterproof layer at the top and inside of the roof respectively: when the roof structural form is inverted, the rolled waterproof layer inside the roof is directly laid on the surface of the disk at the top end of the outer pipe, and the top surface layer of the roof is laid on the surface of the disk at the top end of the inner pipe. In this case, the rainwater on the top of the roof enters the inner pipe through the top rainwater bucket cap and is collected and discharged through the inner pipe, and the rainwater on the rolled waterproof layer inside the roof enters through the top of the outer pipe and is collected and discharged through the outer pipe; when the roof structural form is right-side up, the rolled waterproof layer inside the roof is laid on the surface of the disk at the top end of the inner pipe, and the rainwater on the top of the roof and the rainwater on the rolled waterproof layer inside the roof are both collected and discharged through the inner pipe, while the rainwater that penetrates between the rolled waterproof layer inside the roof and the structural layer is collected and discharged through the outer pipe.

[0014] Furthermore, the connecting piece includes a first screw rod fixed to the disk at the top end of the outer pipe at the bottom end, a second screw rod coaxially connected to the top end of the first screw rod, and a second nut threadedly connected to the top of the second screw rod;

[0015] The top end of the second screw sequentially passes upward through the disk at the top end of the inner pipe and the rainwater hopper cap, and the second nut is located on the upper side of the rainwater hopper cap.

[0016] By adopting this technical solution, the first screw, the second screw and the second nut cooperate to press the rainwater hopper cap on the top of the inner pipe, and at the same time, the inner pipe and the outer pipe form an integral cooperative structure.

[0017] Furthermore, the inner drain hopper further includes a first pressing ring concentrically placed on the disk at the top end of the outer pipe, a second pressing ring concentrically placed on the disk at the top end of the inner pipe, and first nuts respectively threadedly connected to the first screw and the second screw;

[0018] The first nut on the first screw is located on the upper side of the first pressing ring, and cooperates with the first screw to press the first pressing ring tightly on the surface of the disk at the top end of the outer pipe;

[0019] The first nut on the second screw is located on the upper side of the second pressing ring, and cooperates with the second screw to press the second pressing ring tightly on the surface of the disk at the top end of the inner pipe.

[0020] By adopting this technical solution, the cooperation between the first nut and the first screw to press the first pressing ring on the disk at the top end of the outer pipe can adapt to the situation where the waterproof coiled material layer is arranged on the disk at the top end of the outer pipe, and the cooperation between the first nut and the second screw to press the second pressing ring on the disk at the top end of the inner pipe can adapt to the situation where the waterproof coiled material layer is arranged on the disk at the top end of the inner pipe: when the roofing structure form is inverted, after the waterproof coiled material layer inside the roof is laid on the surface of the disk at the top end of the outer pipe, lift the first pressing ring so that the edge of the waterproof coiled material layer close to the outer pipe is placed below the first pressing ring, and then rotate the first nut on the first screw to press the edge of the waterproof coiled material layer close to the outer pipe tightly on the top of the outer pipe, thereby avoiding the leakage problem caused by rainwater crossing the waterproof coiled material layer at this place; when the roofing structure form is right-side up, after the waterproof coiled material layer inside the roof is laid on the surface of the disk at the top end of the inner pipe, lift the second pressing ring so that the edge of the waterproof coiled material layer close to the inner pipe is placed below the second pressing ring, and then rotate the first nut on the second screw to press the edge of the waterproof coiled material layer close to the inner pipe tightly on the top of the inner pipe, thereby avoiding the leakage problem caused by rainwater crossing the waterproof coiled material layer at this place.

[0021] Furthermore, the outer drain hopper includes a housing and a water outlet pipe;

[0022] The side wall of the housing facing the roof is open to form the water inlet, and the bottom of the other side is connected and communicated with the top end of the water outlet pipe;

[0023] The bottom of the water outlet pipe forms the water outlet.

[0024] By adopting this technical solution, the housing and the water outlet pipe cooperate to guide the rainwater on the side of the roof into the housing for collection and then to the water outlet pipe, and then export it through the water outlet pipe, realizing the collection and discharge of the rainwater on the top side of the roof.

[0025] Furthermore, the external drainage hopper further includes a horizontal partition and a vertical partition welded inside the housing;

[0026] The horizontal partition is horizontally welded inside the housing and divides the internal space of the housing into upper and lower parts;

[0027] The vertical partition is vertically welded inside the water outlet pipe and divides the internal space of the water outlet pipe into front and rear parts;

[0028] The rear end of the horizontal partition is connected to the top end of the vertical partition.

[0029] By adopting this technical solution, the horizontal partition and the vertical partition divide the internal space formed by the housing and the water outlet pipe into two non-interfering drainage passages. On the premise that the inner bottom surface of the housing is flush with the surface of the roof structure layer, the height of the horizontal partition can be set to adapt to different roof structure forms for draining water on the top of the roof and on the internal coiled waterproof layer of the roof respectively: when the roof structure form is inverted, the internal coiled waterproof layer of the roof is directly laid to the inner bottom surface of the housing, and the top surface layer of the roof is laid on the horizontal partition. In this case, the rainwater on the top of the roof is introduced above the horizontal partition into the water outlet pipe and discharged, and the rainwater on the internal coiled waterproof layer of the roof is introduced below the horizontal partition into the water outlet pipe and discharged; when the roof structure form is right-side up, the internal coiled waterproof layer of the roof is directly laid above the horizontal partition, and the rainwater on the top of the roof and the rainwater on the internal coiled waterproof layer of the roof are both introduced above the horizontal partition into the water outlet pipe and discharged, while the rainwater penetrating between the internal coiled waterproof layer of the roof and the structure layer is introduced below the horizontal partition into the water outlet pipe and discharged.

[0030] Furthermore, the external drainage hopper further includes a bottom plate and a partition plate vertically welded on the side wall of one side of the water inlet of the housing along the horizontal direction;

[0031] The top surface of the bottom plate is flush with the inner bottom surface of the housing;

[0032] The top surface of the partition plate is flush with the top surface of the horizontal partition.

[0033] By adopting this technical solution, the bottom plate and the partition plate provide support and extension length, providing a basis for increasing the connection stability of the coiled waterproof layer and the installation stability of the housing.

[0034] Furthermore, the external drainage hopper further includes a first pressing block and a second pressing block welded on the side wall of one side of the water inlet of the housing;

[0035] The first pressing block is located on the upper side of the bottom plate, and there is a clamping gap between the bottom of the first pressing block and the bottom plate;

[0036] The second pressing block is located on the upper side of the partition plate, and there is a clamping gap between the bottom of the second pressing block and the partition plate.

[0037] By adopting this technical solution, the clamping gap formed between the first pressing block and the bottom plate can increase the bonding strength between the coiled material waterproof layer and the inner bottom surface of the housing when the coiled material waterproof layer inside the roof extends to the inner bottom surface of the housing, so as to avoid the leakage problem caused by rainwater crossing the coiled material waterproof layer at this place; the clamping gap formed between the second pressing block and the partition plate can increase the bonding strength between the coiled material waterproof layer and the surface of the horizontal partition when the coiled material waterproof layer inside the roof extends to the horizontal partition, so as to avoid the leakage problem caused by rainwater crossing the coiled material waterproof layer at this place.

[0038] Furthermore, the outer drainage hopper further includes a wire mesh installed between the bottom plate and the partition plate for covering the lower part of the water inlet and a grate installed on the upper side of the partition plate for covering the upper part of the water inlet.

[0039] By adopting this technical solution, the addition of the wire mesh and the grate realizes the blocking of sundries and avoids the influence of sundries brought by rainwater on the roof on drainage.

[0040] Compared with the prior art, the present invention has the following beneficial effects:

[0041] The inner drainage hopper and the outer drainage hopper that constitute the roof drainage system cooperate with each other, and both can drain water on the coiled material waterproof layer at the top and inside of the roof, enabling the rainwater on the roof to be concentrated and collected for discharge. It will not affect the drainage capacity of the drainage system due to cracks in the top protection layer of the roof, and avoid the problem of rainwater accumulation on the top and inside of the roof and on the coiled material waterproof layer, greatly reducing the probability of roof seepage, and can simultaneously adapt to different roof structural forms, having good versatility and application prospects BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 is a three-dimensional schematic diagram of the inner drainage hopper in the building roof drainage system of the present invention;

[0043] Figure 2 is a three-dimensional schematic diagram of the outer pipe in the building roof drainage system of the present invention;

[0044] Figure 3 is a three-dimensional schematic diagram of the inner pipe in the building roof drainage system of the present invention;

[0045] Figure 4 is a three-dimensional schematic diagram of the outer drainage hopper in the building roof drainage system of the present invention;

[0046] Figure 5Isometric schematic diagram of the local external drain bucket in the building roof drainage system of the present invention;

[0047] Figure 6 Bottom view schematic diagram of the external drain bucket in the building roof drainage system of the present invention;

[0048] Figure 7 Schematic diagram of the existing positive roof structure form;

[0049] Figure 8 Schematic diagram of the existing inverted roof structure form.

[0050] Explanation of reference numerals: 1, outer pipe; 2, inner pipe; 3, rainwater bucket cap; 4, first compression ring; 5, first screw; 6, first nut; 7, second compression ring; 8, second screw; 9, second nut; 10, wire cage; 11, housing; 12, horizontal partition; 13, outlet pipe; 14, vertical partition; 15, first pressing block; 16, wire mesh; 17, partition board; 18, second pressing block; 19, grate; 20, third screw; 21 third nut; 22, structural layer; 23, slope-finding and leveling layer; 24, vapor barrier; 25, insulation layer; 26, leveling layer; 27, sheet waterproof layer; 28, protective layer. Detailed implementation manners

[0051] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0052] The present invention provides a building roof drainage system for draining water on the top and inside of the sheet waterproof layer 27 of the roof according to the building roof structure form. The drainage system includes: an internal drain bucket disposed on the top of the roof for collecting rainwater on the top of the roof and the top of the sheet waterproof layer 27, the internal drain bucket including a water inlet and a water outlet; an external drain bucket disposed on the side of the roof for collecting rainwater on the top of the roof and the top of the sheet waterproof layer 27, the external drain bucket including a water inlet and a water outlet; wherein, the water outlets of the internal drain bucket and the external drain bucket are respectively connected to the drainage pipes to cooperate to realize the collection and discharge of roof rainwater;

[0053] The internal drain bucket and the external drain bucket that make up the roof drainage system cooperate with each other, and both can drain water on the top of the roof and the sheet waterproof layer 27 inside the roof, so that the rainwater on the roof can be centrally collected and discharged, and the drainage capacity of the drainage system will not be affected by cracks in the protective layer 28 on the top of the roof, avoiding the problem of rainwater accumulation on the top of the roof and the sheet waterproof layer 27 inside the roof, greatly reducing the probability of roof seepage, and being able to adapt to different roof structure forms at the same time, having good versatility and application prospects.

[0054] Please refer to the attached Figures 1-3, the internal drainage hopper includes an outer pipe 1 and an inner pipe 2 with their top and bottom ends forming a water inlet and a water outlet respectively, a rainwater hopper cap 3 placed at the opening position of the top end of the inner pipe 2, a wire cage 10 arranged between the outer pipe 1 and the inner pipe 2, and a connecting piece that connects the outer pipe 1, the wire cage 10, the inner pipe 2, and the rainwater hopper cap 3 from bottom to top to form an integral body; among them, both the outer pipe 1 and the inner pipe 2 are pipe bodies with a disk integrally connected to the outside of the top end, and the outer pipe 1 is sleeved on the outer side of the lower part of the inner pipe 2; the wire cage 10 is clamped between the top disk of the outer pipe 1 and the top disk of the inner pipe 2, and the upper pipe body of the inner pipe 2 is located inside the wire cage 10;

[0055] The outer pipe 1 and the inner pipe 2 form two coaxial drainage paths, and their top and bottom ends form the water inlet and the water outlet of the internal drainage hopper respectively. On the premise that the top disk of the outer pipe 1 is flush with the surface of the roofing structure layer 22, by changing the installation height of the inner pipe 2 through the cooperation of the wire cage 10 and the connecting piece, it can adapt to different roofing structure forms and drain water on the top of the roof and the coiled waterproof layer 27 inside the roof respectively.

[0056] Furthermore, the connecting piece includes a first screw 5 fixed to the top disk of the outer pipe 1 at the bottom end, a second screw 8 coaxially connected to the top end of the first screw 5, and a second nut 9 threadedly connected to the top of the second screw 8; among them, the top end of the second screw 8 passes upward through the top disk of the inner pipe 2 and the rainwater hopper cap 3 in sequence, and the second nut 9 is located on the upper side of the rainwater hopper cap 3;

[0057] The cooperation of the first screw 5, the second screw 8, and the second nut 9 realizes the pressing of the rainwater hopper cap 3 on the top of the inner pipe 2, and at the same time makes the inner pipe 2 and the outer pipe 1 form an integral cooperative structure.

[0058] Furthermore, the internal drainage hopper also includes a first pressing ring 4 concentrically placed on the top disk of the outer pipe 1, a second pressing ring 7 concentrically placed on the top disk of the inner pipe 2, and first nuts 6 threadedly connected to the first screw 5 and the second screw 8 respectively; among them, the first nut 6 on the first screw 5 is located on the upper side of the first pressing ring 4, and cooperates with the first screw 5 to press the first pressing ring 4 against the surface of the top disk of the outer pipe 1; the first nut 6 on the second screw 8 is located on the upper side of the second pressing ring 7, and cooperates with the second screw 8 to press the second pressing ring 7 against the surface of the top disk of the inner pipe 2;

[0059] The cooperation of the first nut 6 and the first screw 5 to press the first pressing ring 4 on the top disk of the outer pipe 1 can adapt to the situation where the coiled waterproof layer 27 is arranged on the top disk of the outer pipe 1, and the cooperation of the first nut 6 and the second screw 8 to press the second pressing ring 7 on the top disk of the inner pipe 2 can adapt to the situation where the coiled waterproof layer 27 is arranged on the top disk of the inner pipe 2.

[0060] In order to enhance the crimping effect of the first pressing ring 4 and the second pressing ring 7 on the coiled material waterproof layer 27, grooves cooperating with the first pressing ring 4 can also be provided on the outer pipe 1, and grooves cooperating with the second pressing ring 7 can be provided on the inner pipe 2.

[0061] Please refer to the appendix Figures 4-6 , the external drain hopper includes a housing 11 and a water outlet pipe 13; an opening is formed on the side wall of the housing 11 facing the roof to form a water inlet, and the bottom of the other side is connected and communicated with the top end of the water outlet pipe 13; the bottom of the water outlet pipe 13 forms a water outlet;

[0062] The housing 11 and the water outlet pipe 13 cooperate to guide the rainwater on the side of the roof into the housing 11 for collection and then export it through the water outlet pipe 13, realizing the collection and discharge of the rainwater on the top side of the roof.

[0063] Furthermore, the external drain hopper further includes a horizontal partition 12 and a vertical partition 14 welded inside the housing 11; the horizontal partition 12 is horizontally welded inside the housing 11 and divides the internal space of the housing 11 into upper and lower parts; the vertical partition 14 is vertically welded inside the water outlet pipe 13 and divides the internal space of the water outlet pipe 13 into front and rear parts; the rear end of the horizontal partition 12 is connected to the top end of the vertical partition 14;

[0064] The horizontal partition 12 and the vertical partition 14 divide the internal space formed by the housing 11 and the water outlet pipe 13 into two non-interfering drainage passages. On the premise that the inner bottom surface of the housing 11 is flush with the surface of the roof structural layer 22, the drainage on the coiled material waterproof layer 27 on the top of the roof and inside the roof can be adapted to different roof structural forms respectively through the setting height of the horizontal partition 12.

[0065] In order to increase the tightness of the coiled material waterproof layer 27 on the surface of the horizontal partition 12 in the later stage, a flap for pressing the coiled material waterproof layer 27 can also be provided at the front end of the horizontal partition 12.

[0066] Furthermore, the external drain hopper further includes a bottom plate and a partition plate 17 vertically welded on the side wall of the water inlet of the housing 11; the top surface of the bottom plate is flush with the inner bottom surface of the housing 11; the top surface of the partition plate 17 is flush with the top surface of the horizontal partition 12;

[0067] The bottom plate and the partition plate 17 provide support and extension length, providing a basis for increasing the connection stability of the coiled material waterproof layer 27 and the installation stability of the housing 11.

[0068] Furthermore, the external drain hopper further includes a first pressing block 15 and a second pressing block 18 welded on the side wall of the water inlet of the housing 11; the first pressing block 15 is located above the bottom plate, and there is a clamping gap between the bottom of the first pressing block 15 and the bottom plate; the second pressing block 18 is located above the partition plate 17, and there is a clamping gap between the bottom of the second pressing block 18 and the partition plate 17;

[0069] The clamping gap formed between the first pressing block 15 and the bottom plate can increase the bonding strength between the coiled material waterproof layer 27 inside the roof and the inner bottom surface of the housing 11 when the coiled material waterproof layer 27 inside the roof extends to the inner bottom surface of the housing 11, so as to avoid the water leakage problem caused by rainwater crossing the coiled material waterproof layer 27 at this place; the clamping gap formed between the second pressing block 18 and the partition plate 17 can increase the bonding strength between the coiled material waterproof layer 27 inside the roof and the surface of the horizontal partition plate 12 when the coiled material waterproof layer 27 inside the roof extends to the horizontal partition plate 12, so as to avoid the water leakage problem caused by rainwater crossing the coiled material waterproof layer 27 at this place.

[0070] Furthermore, the external drain hopper further includes a wire mesh 16 installed between the bottom plate and the partition plate 17 for covering the lower side part of the water inlet and a grate 19 installed on the upper side of the partition plate 17 for covering the upper side part of the water inlet;

[0071] The addition of the wire mesh 16 and the grate 19 realizes the blocking of sundries and avoids the influence of the sundries brought by rainwater on the roof on the drainage.

[0072] In order to install the grate 19, a third screw 20 and a third nut 21 cooperating with the third screw 20 are further provided on the circumferential direction of the water inlet of the housing 11. When installing the grate 19, the grate 19 is fixed and installed by passing the third screw 20 through the grate 19 and cooperating with the third nut 21.

[0073] In actual construction, for different roof structural forms, there are different installation steps and forms. Both the internal drain hopper and the external drain hopper are pre-embedded after the steel bars of the roof floor are tied. Based on the height of the outer pipe 1 in the internal drain hopper being consistent with the elevation of the roof structural layer 22 and the height of the bottom plate 11 in the external drain hopper being consistent with the elevation of the roof structural layer 22, there are the following embodiments:

[0074] Embodiment 1

[0075] This embodiment is suitable for the roof structural design of a single-layer coiled material waterproof layer 27 inverted roof:

[0076] Installation of the internal drain hopper: On the upper part of the roof structural layer 22, slope and level the layer 23 to the edge of the top disc of the outer pipe 1. When laying the coiled material waterproof layer 27, press the coiled material waterproof layer 27 below the first pressing ring 4 through the cooperation of the first nut 6 and the first screw 5, then install the wire cage 10, and then carry out subsequent construction such as laying the roof structural insulation layer 25;

[0077] Installation of external drain hopper: From the upper slope-forming and leveling layer 23 of the roof structural layer 22 to the edge of the inner bottom surface of the housing 11, lay the coil waterproof layer 27 along the lower part of the first pressing block 15, install the wire mesh 16, and press the coil waterproof layer 27 under the wire mesh 16. Filter pebbles or the like can be added outside the wire mesh 16 to drain accumulated water, and then carry out subsequent construction such as laying the roof structure insulation layer 25.

[0078] Embodiment 2

[0079] This embodiment is suitable for a roof structure designed as a single-layer coil waterproof layer 27 inverted roof:

[0080] Installation of internal drain hopper: The construction completion elevation of the slope-forming and leveling layer 23 and the insulation layer 25 above the roof structural layer 22 is flush with the surface of the top disc of the inner pipe 2. The wire cage 10 is installed before the construction of the insulation layer 25, and then the coil waterproof layer 27 is laid. The coil waterproof layer 27 is pressed below the second pressing ring 7 through the cooperation of the first nut 6 and the second screw rod 8. Subsequently, install the rainwater hopper cap 3 through the cooperation of the second nut 9 and the second screw rod 8, and then carry out subsequent construction such as the roof structure protection layer 28;

[0081] Installation of external drain hopper: The construction completion elevation of the slope-forming and leveling layer 23 and the insulation layer 25 above the roof structural layer 22 is flush with the surface of the partition board 17. The wire mesh 16 is installed before the construction of the insulation layer 25, and then the coil waterproof layer 27 is laid. Lay the coil waterproof layer 27 along the lower part of the second pressing block 18, and then install the grate 19 through the cooperation of the third screw rod 20 and the third nut 21 to press the coil waterproof layer 27, and then carry out subsequent construction such as the roof structure protection layer 28.

[0082] Embodiment 3

[0083] This embodiment is suitable for a roof structure designed as a double-layer coil waterproof layer 27 roof:

[0084] Installation of internal drain hopper: From the upper slope-forming and leveling layer 23 of the roof structural layer 22 to the edge of the top disc of the inner and outer pipes 1, lay the lower-layer coil waterproof layer 27, press the lower-layer coil waterproof layer 27 below the first pressing ring 4, fasten it through the cooperation of the first screw rod 5 and the first nut 6, install the outer wire cage 10, and carry out the construction of the roof structure insulation layer 25 and the mortar protection layer 28; then lay the upper-layer coil waterproof layer 27, press the upper-layer coil waterproof layer 27 below the second pressing ring 7 through the cooperation of the first nut 6 and the second screw rod 8. Subsequently, install the rainwater hopper cap 3 through the cooperation of the second nut 9 and the second screw rod 8, and then carry out subsequent construction such as the roof structure protection layer 28;

[0085] Installation of side drainage hopper: From the slope and leveling layer 23 on the upper part of the roof structural layer 22 to the inner bottom surface of the housing 11, lay the coil waterproof layer 27 along the lower part of the first pressing block 15, install the wire mesh 16, and press the coil waterproof layer 27 under the wire mesh 16. Filtering water accumulation such as cobblestones can be added outside the wire mesh 16, and then construct the roof structure insulation layer 25 and mortar protection layer 28; then lay the upper coil waterproof layer 27, lay the coil waterproof layer 27 along the lower part of the second pressing block 18, and then install the grate 19 through the cooperation of the third screw 20 and the third nut 21 to press the coil waterproof layer 27, and then carry out subsequent construction such as the roof structure protection layer 28.

[0086] The present invention has been described in detail above in conjunction with the accompanying drawings and embodiments. Those of ordinary skill in the art can make various variations of the present invention according to the above description. Therefore, certain details in the embodiments should not constitute a limitation to the present invention, and the protection scope of the present invention will be defined by the scope defined in the appended claims.

Claims

1. A building roof drainage system, used to adapt to the building roof structure to drain the roof top and internal waterproofing layer, characterized in that: The drainage system comprises: An internal drainage hopper is arranged on the top of the roof and is used to collect rainwater from the top of the roof and the top of the waterproofing layer. The internal drainage hopper includes a water inlet and a water outlet; An external drainage hopper is arranged on the side of the roof and is used to collect rainwater from the top of the roof and the top of the waterproofing layer. The external drainage hopper includes a water inlet and a water outlet; The water outlets of the inner drain scoop and the outer drain scoop are respectively connected to drainage pipes to collaboratively realize the collection and discharge of roof rainwater.

2. The building roof drainage system according to claim 1, characterized in that: The inner water gutter comprises an outer tube and an inner tube whose top and bottom ends respectively form the water inlet and the water outlet, a rain gutter cap placed at the top opening of the inner tube, a wire cage arranged between the outer tube and the inner tube, and a connecting piece for connecting the outer tube, the wire cage, the inner tube and the rain gutter cap from bottom to top to form a whole; The outer tube and the inner tube are both tubes with a top end integrally connected to a disc, and the outer tube is sleeved on the lower outer side of the inner tube; The wire cage is sandwiched between the top disc of the outer tube and the top disc of the inner tube, and the upper tube body of the inner tube is located inside the wire cage.

3. The building roof drainage system according to claim 2, characterized in that: The connecting member comprises a first screw whose bottom end is fixed to the top disc of the outer tube, a second screw coaxially connected to the top of the first screw, and a second nut threadedly connected to the top of the second screw. The top end of the second screw rod passes through the top end disc of the inner tube and the rain gutter cap in sequence, and the second nut is located on the upper side of the rain gutter cap.

4. The building roof drainage system according to claim 3, characterized in that: The inner drain bucket further comprises a first pressure ring placed concentrically on the top disc of the outer tube, a second pressure ring placed concentrically on the top disc of the inner tube, and a first nut threadedly connected to the first screw and the second screw respectively; The first nut on the first screw is located on the upper side of the first pressing ring and cooperates with the first screw to press the first pressing ring tightly against the surface of the top disc of the outer tube; The first nut on the second screw rod is located on the upper side of the second pressing ring and cooperates with the second screw rod to press the second pressing ring tightly onto the surface of the disc at the top end of the inner tube.

5. The building roof drainage system according to claim 1, characterized in that: The external water drain bucket comprises a shell and a water outlet pipe; The side wall of the shell facing the roof has an opening to form the water inlet, and the bottom opening on the other side is connected and communicated with the top end of the water outlet pipe; The bottom of the water outlet pipe forms the water outlet.

6. The building roof drainage system according to claim 5, characterized in that: The external drainage bucket also includes a horizontal partition and a vertical partition welded inside the shell; The horizontal partition is horizontally welded inside the shell and divides the internal space of the shell into two parts, an upper part and a lower part; The vertical partition is vertically welded inside the water outlet pipe and divides the internal space of the water outlet pipe into two parts, front and rear; The rear end of the horizontal partition is connected to the top end of the vertical partition.

7. The building roof drainage system according to claim 6, characterized in that: The external drainage bucket also includes a bottom plate and a partition plate vertically welded to the side wall of the shell body on one side of the water inlet in the horizontal direction; The top surface of the bottom plate is flush with the inner bottom surface of the shell; The top surface of the partition plate is flush with the top surface of the horizontal partition plate.

8. The building roof drainage system according to claim 7, characterized in that: The external water drain bucket also includes a first pressing block and a second pressing block welded to a side wall of the shell on one side of the water inlet; The first pressing block is located on the upper side of the bottom plate, and a clamping gap is left between the bottom of the first pressing block and the bottom plate; The second pressing block is located on the upper side of the partition plate, and a clamping gap is left between the bottom of the second pressing block and the partition plate.

9. The building roof drainage system according to claim 7, characterized in that: The external drainage bucket also includes a wire mesh installed between the bottom plate and the partition plate for covering the lower part of the water inlet and a grate installed on the upper side of the partition plate for covering the upper part of the water inlet.

Images