Roof floor drain with drainage and exhaust functions and construction method thereof

Abstract

The invention provides a roof floor drain with drainage and exhaust functions and a construction method thereof, and relates to the technical field of building roof drainage. The roof drain comprises a vertically arranged roof drain main pipe, the roof drain main pipe comprises a lower-section main pipe pre-buried in a structural plate and an upper-section main pipe connected to the upper portion, and an annular water-permeable and air-permeable layer is arranged between the lower-section main pipe and the upper-section main pipe. A bottomless conical floor drain water collecting bowl is installed at the top end of the upper section main pipe, and a plurality of drain holes are formed in the periphery of the bowl bottom. The top of the water shielding pipe is connected with the upper section main pipe, the bottom of the water shielding pipe extends into the lower section main pipe, rainwater on the upper portion is guided to be drained downwards, water flow is prevented from flowing backwards, and meanwhile the ventilation channel is kept unblocked. A water-permeable and air-permeable ring is further arranged on the periphery of the bottom of the floor drain water collecting bowl. During construction, the lower-section main pipe is pre-embedded, the water-permeable and breathable layer and the water shielding pipe are installed, all roof layers are constructed, and finally the water collecting bowls and the water-permeable and breathable rings are installed. Roof accumulated water and moisture in the construction period and the use period can be effectively drained, the structure is reasonable, construction is easy and convenient, and the roof drainage efficiency and the seepage-proofing performance are remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building roof drainage, in particular to a roof drain with drainage and exhaust functions and a construction method thereof. BACKGROUND

[0002] Roof leakage is a common quality problem in construction engineering, which not only affects the building decoration effect and normal use function, but also reduces the service life of the structure, shortens the building life and affects people's production and life. In addition to doing a good job in waterproofing, the drainage efficiency and capacity of the roof are also key factors to prevent roof leakage.

[0003] Roof construction needs to avoid the rainy season, but in recent years, the climate has changed abnormally, and roof construction often encounters thunderstorms, which causes water accumulation in the insulation layer and the slope layer to be difficult to drain, affecting the construction quality and efficiency, and also bringing leakage risk to the roof engineering. The existing roof drainage device usually only considers the drainage function during long-term use, and cannot solve the problem of draining water accumulation in the roof layer during construction, nor can it effectively remove the moisture in the insulation layer and the slope layer.

[0004] Therefore, a roof drain device is needed that can effectively work during roof construction and use, and can drain both surface water and water accumulation and moisture in the layer. SUMMARY

[0005] In view of the deficiencies of the prior art, the purpose of the present application is to provide a roof drain with drainage and exhaust functions during roof construction and long-term use.

[0006] The technical scheme adopted by the present application to solve its technical problems is:

[0007] A roof drain with drainage and exhaust functions, comprising a vertically arranged drain main pipe, the drain main pipe comprising a lower section main pipe embedded in a structural plate and an upper section main pipe connected above the lower section main pipe, an annular water-permeable and air-permeable layer is arranged between the lower section main pipe and the upper section main pipe, the water-permeable and air-permeable layer is composed of a water-permeable and air-permeable material, the upper section main pipe is connected with a drain water collecting bowl at the top end, the drain water collecting bowl is a bottomless conical structure with a larger upper opening than a lower opening, and a plurality of water discharge holes are formed in the bottom periphery of the drain water collecting bowl.

[0008] Further, the inner diameter of the water-permeable and air-permeable layer is smaller than the inner diameter of the drain main pipe, a water-blocking pipe is inserted in the center of the water-permeable and air-permeable layer, a horizontally extending connecting edge is provided on the top periphery of the water-blocking pipe, the connecting edge is fixedly connected with the bottom of the upper section main pipe, and the bottom of the water-blocking pipe extends downward into the inside of the lower section main pipe; so that the water flow of the upper section main pipe is discharged downward through the inside of the water-blocking pipe, which has a certain shielding effect on the middle water-permeable and air-permeable layer, and can prevent water flow from flowing back to the insulation layer and the slope layer.

[0009] Further, the bottom opening of the water shielding pipe is in communication with the internal space of the lower section pipe, and there is a gap between the inner wall of the lower section pipe; the water and moisture between layers collected and discharged by the water-permeable and air-permeable layer provide a channel for entering the lower section pipe, ensuring the smoothness of the drainage and air exhaust paths.

[0010] Further, the bottom outer periphery of the water collecting bowl of the roof drain is provided with a water-permeable and air-permeable ring, the water-permeable and air-permeable ring is composed of a water-permeable and air-permeable material, and the water-permeable and air-permeable ring is arranged around the bottom of the water collecting bowl of the roof drain; water vapor or a small amount of accumulated water from the protection layer enters the water collecting bowl of the roof drain through the water-permeable and air-permeable material.

[0011] A construction method of a roof drain with drainage and air exhaust functions, comprising the following steps:

[0012] S1, during the construction of the roof structure plate, the lower section pipe of the roof drain main pipe is embedded in the structure plate, ensuring that the top of the lower section pipe is flush with the surface of the structure plate;

[0013] S2, an annular water-permeable and air-permeable layer is placed on the top of the lower section pipe, a water shielding pipe is inserted into the center hole of the water-permeable and air-permeable layer, and then the upper section pipe of the roof drain main pipe is fixed on the top surface of the water shielding pipe connecting edge, so that the water shielding pipe, the water-permeable and air-permeable layer and the roof drain main pipe are kept concentric;

[0014] S3, the insulation layer and the slope layer are successively constructed above the structure plate, and finally the waterproof layer is constructed, so that the top of the waterproof layer is consistent in height with the top of the upper section pipe;

[0015] S4, a roof drain water collecting bowl is installed on the top of the upper section pipe, so that the bottom of the roof drain water collecting bowl is located inside the upper section pipe, and a water-permeable and air-permeable ring is arranged on the outer periphery of the bottom of the roof drain water collecting bowl;

[0016] S5, the waterproof protection layer is constructed, and the installation of the roof drain is completed.

[0017] The application adopting the above technical scheme has the following outstanding features compared with the prior art:

[0018] The application realizes effective discharge of accumulated water and moisture in the roof layer during construction and use by arranging a water-permeable and air-permeable layer between the upper and lower section pipes, and reduces the risk of leakage. The water shielding pipe structure not only ensures the normal drainage path, but also prevents rainwater from flowing back, while maintaining the smoothness of the air exhaust path. The roof drain water collecting bowl and the water-permeable and air-permeable ring design enhances the rainwater collection capacity and ensures the smooth discharge of water vapor in the protection layer. The device has a reasonable structure, simple construction, significantly improves the drainage efficiency and long-term anti-leakage performance of the roof, and has high practical value. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structural schematic diagram in the embodiment of the application;

[0020] Figure 2 This is a schematic diagram of the structure in an embodiment of the present invention.

[0021] Explanation of reference numerals in the attached drawings: 1. Structural panel; 2. Insulation layer; 3. Slope layer; 4. Waterproof layer; 5. Main drain pipe; 6. Water-permeable and breathable layer; 7. Water-blocking pipe; 8. Drain water collection bowl; 9. Water-permeable and breathable ring; 10. Lower main pipe; 61. Upper main pipe; 62. Drain hole; 91. Detailed Implementation

[0022] The present invention will be further illustrated below with reference to specific embodiments. The purpose of this illustration is solely to provide a better understanding of the invention. Therefore, the examples given do not limit the scope of protection of the present invention.

[0023] like Figure 1 – Figure 2 As shown, this embodiment provides a roof drain that combines drainage and ventilation functions, including a vertically arranged main drain pipe 6. The main drain pipe 6 includes a lower section main pipe 61 pre-embedded in the structural slab 1 and an upper section main pipe 62 connected above the lower section main pipe 61. An annular permeable and breathable layer 7 is provided between the lower section main pipe 61 and the upper section main pipe 62. The permeable and breathable layer 7 is made of permeable and breathable material. The top of the upper section main pipe 62 is connected to a drain water collection bowl 9. The drain water collection bowl 9 is a bottomless conical structure with an upper opening larger than a lower opening. Multiple drainage holes 91 are opened on the bottom periphery of the drain water collection bowl 9.

[0024] The inner diameter of the permeable and breathable layer 7 is smaller than the inner diameter of the main drain pipe 6. A water-blocking pipe 8 is inserted in the center of the permeable and breathable layer 7. The top outer periphery of the water-blocking pipe 8 is provided with a horizontally extending connecting edge, which is fixedly connected to the bottom of the upper main pipe 62. The bottom of the water-blocking pipe 8 extends downward into the interior of the lower main pipe 61. This allows the water flow from the upper main pipe 62 to be discharged downward through the interior of the water-blocking pipe 8, which provides a certain degree of shielding for the middle permeable and breathable layer 7. At the same time, it can prevent water from flowing back from the permeable and breathable layer 7 into the insulation layer 2 and the slope-finding layer 3.

[0025] The bottom opening of the water-blocking pipe 8 is connected to the internal space of the lower main pipe 61 and there is a gap between it and the inner wall of the lower main pipe 61; it provides a channel for the interlayer water or moisture collected and discharged by the water-permeable and air-permeable layer 7 to enter the lower main pipe 61, ensuring unobstructed drainage and ventilation paths.

[0026] A water-permeable and air-permeable ring 10 is provided on the outer periphery of the bottom of the drain water collection bowl 9. The water-permeable and air-permeable ring 10 is made of water-permeable and air-permeable material and is arranged around the bottom of the drain water collection bowl 9; so that water vapor or a small amount of water from the protective layer 5 can enter the drain water collection bowl 9 through the water-permeable and air-permeable material.

[0027] A construction method for a roof drain that combines drainage and ventilation functions includes the following steps:

[0028] S1. During the construction of the roof structure slab 1, the lower section of the main pipe 61 of the roof drain pipe 6 is pre-embedded in the structure slab 1 to ensure that the top of the lower section of the main pipe 61 is flush with the surface of the structure slab 1.

[0029] S2. Place an annular water-permeable and air-permeable layer 7 on the top of the lower section main pipe 61, insert the water-blocking pipe 8 into the central hole of the water-permeable and air-permeable layer 7, and then fix the upper section main pipe 62 of the sky drain main pipe 6 to the top surface of the connecting edge of the water-blocking pipe 8, so that the water-blocking pipe 8, the water-permeable and air-permeable layer 7 and the sky drain main pipe 6 remain concentric.

[0030] S3. The insulation layer 2 and the slope-finding layer 3 are constructed sequentially above the structural slab 1, and finally the waterproof layer 4 is constructed, so that the top of the waterproof layer 4 is at the same height as the top of the upper main pipe 62.

[0031] S4. Install a drain bowl 9 on the top of the upper main pipe 62, so that the bottom of the drain bowl 9 is inside the upper main pipe 62, and set a water-permeable and air-permeable ring 10 on the outer periphery of the bottom of the drain bowl 9.

[0032] S5, construct waterproof protective layer 5, and complete the installation of roof drains.

[0033] This invention, by incorporating a permeable and breathable layer between the upper and lower main pipes, effectively drains accumulated water and moisture from the roof during construction and use, reducing the risk of leakage. The water-blocking pipe structure ensures a normal drainage path, prevents rainwater backflow, and maintains unobstructed ventilation channels. The design of the roof drain basin and permeable and breathable ring enhances rainwater collection capacity and ensures smooth drainage of moisture from the protective layer. This device has a reasonable structure, is easy to construct, and significantly improves the roof's drainage efficiency and long-term leak-proof performance, demonstrating high practical value.

[0034] The above description is merely a preferred embodiment of the present invention and does not limit the scope of the present invention. All equivalent changes made based on the description and drawings of the present invention are included within the scope of the present invention.

Claims

1. A roof drain that combines drainage and ventilation functions, comprising a vertically installed main drain pipe, characterized in that: The main drain pipe includes a lower main pipe embedded in the structural slab and an upper main pipe connected above the lower main pipe. An annular permeable and breathable layer is provided between the lower and upper main pipes. The permeable and breathable layer is made of permeable and breathable material. A drain collection bowl is connected to the top of the upper main pipe. The drain collection bowl is a bottomless conical structure with an upper opening larger than a lower opening. Multiple drainage holes are opened around the bottom perimeter of the drain collection bowl.

2. The roof drain with both drainage and ventilation functions as described in claim 1, characterized in that: The inner diameter of the permeable and breathable layer is smaller than the inner diameter of the main drain pipe. A water-blocking pipe is inserted in the center of the permeable and breathable layer. A horizontally extending connecting edge is provided on the outer periphery of the top of the water-blocking pipe. The connecting edge is fixedly connected to the bottom of the upper main pipe. The bottom of the water-blocking pipe extends downward into the interior of the lower main pipe.

3. The roof drain with both drainage and ventilation functions as described in claim 2, characterized in that: The bottom opening of the water-blocking pipe is connected to the internal space of the lower main pipe and there is a gap between it and the inner wall of the lower main pipe.

4. The roof drain with both drainage and ventilation functions as described in claim 1, characterized in that: The bottom outer periphery of the drain water collection bowl is provided with a water-permeable and air-permeable ring, which is made of water-permeable and air-permeable material and surrounds the bottom of the drain water collection bowl.

5. A construction method for a roof drain that combines drainage and ventilation functions, characterized in that, Includes the following steps: S1. During the construction of the roof structure slab, the lower section of the main drain pipe is pre-embedded in the structure slab to ensure that the top of the lower section of the main drain pipe is flush with the surface of the structure slab. S2. Place an annular water-permeable and air-permeable layer on the top of the lower section main pipe, insert the water-blocking pipe into the central hole of the water-permeable and air-permeable layer, and then fix the upper section main pipe of the sky drain main pipe to the top surface of the water-blocking pipe connection side, so that the water-blocking pipe, the water-permeable and air-permeable layer and the sky drain main pipe remain concentric. S3. Construct the insulation layer and the slope-finding layer in sequence above the structural slab, and finally construct the waterproof layer so that the top of the waterproof layer is at the same height as the top of the upper main pipe. S4. Install a drain cup at the top of the upper main pipe, so that the bottom of the drain cup is inside the upper main pipe, and set a water-permeable and air-permeable ring on the outer periphery of the bottom of the drain cup. S5. Construct a waterproof protective layer and complete the installation of roof drains.

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