Underground garage roof top plate internal drainage structure provided with floor drain

CN224931157UActive Publication Date: 2026-11-03TIANLUN BAY HANDAN REAL ESTATE CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202522705464.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-12-22
Publication Date
2026-11-03
Estimated Expiration
2035-12-22

AI Technical Summary

Technical Problem

Traditional garage roof drainage systems have long drainage paths, high engineering costs, and their drainage effect is greatly affected by soil moisture content, making it difficult to meet drainage and seepage prevention design requirements. In addition, water accumulation during the rainy season can easily cause leakage risks.

Method used

A cast iron floor drain, a permeable non-woven fabric layer, a graded support layer, a water storage layer, a seepage layer, and a wire mesh layer are installed inside the garage roof slab. Combined with a drainage motor and municipal pipelines, an internal drainage structure is formed, which shortens the drainage path and improves drainage efficiency.

Benefits of technology

It enables rapid and effective rainwater drainage, reduces the risk of leakage, shortens the construction period, reduces project costs, and prevents soil erosion.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224931157U_ABST
    Figure CN224931157U_ABST
Patent Text Reader

Abstract

The utility model relates to building drainage technical field discloses a kind of underground garage roof inner drainage structure of setting floor drain, including ground floor, the upper surface of ground floor is fixedly connected with wall, the top of wall is fixedly connected with ground roof, the inside of ground floor is provided with sump, the outside of wall is fixedly connected with connecting bracket one, the inside of connecting bracket one is clamped with drain pipe, the outside of drain pipe is fixedly connected with galvanized steel pipe, the top of galvanized steel pipe is fixedly connected with water collection assembly, water collection assembly includes cast iron floor drain.In the utility model, the cast iron floor drain arranged in the ground roof collects the rainwater in the soil on the top of the ground roof into the sump, and the drainage motor is started to drain the rainwater into the municipal pipeline, thereby achieving the effect of shortening the drainage path, improving the drainage efficiency and reducing the risk of garage roof leakage. In the construction period, the construction period can also be shortened, the construction efficiency is improved, and the engineering cost is reduced.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of building drainage technology, and in particular to an internal drainage structure for the roof slab of an underground garage with a floor drain. Background Technology

[0002] To improve the greening rate of rooftop vegetation and prevent low plant survival rates and potential leaks caused by waterlogging in the planting soil, a series of drainage measures, including appropriate drainage and filtration layers, must be designed for the rooftop. After the rooftop civil structure is completed and before backfilling with planting soil, drainage and filtration measures must be implemented to systematically discharge water into the rainwater system. Traditional garage rooftop drainage systems rely on building slopes, allowing water to flow from the rooftop into the soil outside the garage. This results in a long drainage path, a thick slope, and high construction costs. Furthermore, drainage effectiveness is greatly affected by soil moisture content; during the rainy season, when the soil inside and outside the garage rooftop area is saturated with water, drainage becomes difficult, and prolonged water accumulation poses a risk of rooftop leakage and root rot in plants.

[0003] Traditional garage roof drainage systems involve sloping the building structure, allowing water accumulated on the garage roof to flow into the soil outside the garage area. This results in a long drainage path, a thick sloping layer, and high construction costs. Furthermore, drainage effectiveness is significantly affected by soil moisture content; during the rainy season, when the soil inside and outside the garage roof area is saturated with water, drainage becomes difficult, failing to meet the drainage and seepage prevention design requirements for garage roofs. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides an internal drainage structure for underground garage roof slabs with floor drains, aiming to improve the problem that traditional garage roof slab drainage systems cannot meet the drainage and seepage prevention design requirements of garage roof slabs.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An internal drainage structure for an underground garage roof slab with a floor drain includes a garage floor slab, a wall fixedly connected to the upper surface of the floor slab, a garage roof slab fixedly connected to the top of the wall, a sump pit inside the floor slab, a movable cover plate installed outside the sump pit, a connecting bracket fixedly connected to the outside of the wall, a drain pipe snapped into the inside of the connecting bracket, a galvanized steel pipe fixedly connected to the outside of the drain pipe, a water collection assembly including a cast iron floor drain fixedly connected to the top of the galvanized steel pipe, a gate valve installed outside the drain pipe, the gate valve fixedly connected to the inside of the movable cover plate, and a drainage assembly installed inside the sump pit.

[0007] Preferably, the drainage assembly includes a drainage motor, which is externally installed inside the sump. The output end of the drainage motor is connected to a forced-flow water pipe, and a gate valve is installed externally on the forced-flow water pipe. The other end of the gate valve is fixedly connected to a connecting pipe, and a connecting bracket is snapped onto the outside of the connecting pipe.

[0008] Preferably, the external fixed connection of the second connecting bracket is to the outside of the wall, and the external fixed connection of the connecting pipe is to the inside of the basement roof slab.

[0009] Preferably, the galvanized steel pipe is externally fixedly connected to a waterproof wing ring, and both the galvanized steel pipe and the waterproof wing ring are externally fixedly connected to the interior of the basement roof slab.

[0010] Preferably, the cast iron floor drain has a permeable non-woven fabric layer fixedly connected inside, and a graded support layer is fixedly connected to the lower surface of the permeable non-woven fabric layer.

[0011] Preferably, a water storage layer is fixedly connected to the lower surface of the graded support layer.

[0012] Preferably, a permeable layer is fixedly connected to the lower surface of the water storage layer, and a wire mesh layer is fixedly connected to the lower surface of the permeable layer.

[0013] Preferably, the lower surface of the wire mesh layer is fixedly connected to the top of the drainage pipe.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, rainwater in the soil at the top of the garage roof is collected by a cast iron floor drain installed inside the garage roof slab and sent to a water collection pit. The drainage motor is then activated to discharge the rainwater into the municipal pipeline, thereby shortening the drainage path, improving drainage efficiency, and reducing the risk of leakage on the garage roof. During the construction period, it can also shorten the construction period, improve construction efficiency, and reduce project costs.

[0016] 2. In this utility model, the permeable non-woven fabric layer, graded support layer, water storage layer, seepage layer and wire mesh layer set inside the cast iron floor drain work together to prevent soil loss when draining the soil on the top of the basement roof. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of an internal drainage structure for an underground garage roof slab with a floor drain, as proposed in this utility model.

[0018] Figure 2 This utility model provides a partial structural diagram of a drainage motor for an internal drainage structure with a floor drain in the roof of an underground garage.

[0019] Figure 3 for Figure 2 Enlarged view of point A in the image.

[0020] Legend:

[0021] 1. Basement floor slab; 2. Walls; 3. Basement roof slab; 4. Sump pit; 5. Movable cover plate; 6. Connecting bracket one; 7. Drainage pipe; 8. Galvanized steel pipe; 9. Water collection assembly; 91. Cast iron floor drain; 92. Permeable non-woven fabric layer; 93. Graded support layer; 94. Water storage layer; 95. Permeable layer; 96. Wire mesh layer; 10. Waterproof wing ring; 11. Gate valve one; 12. Drainage motor; 13. Forced drainage water supply pipe; 14. Gate valve two; 15. Connecting pipe; 16. Connecting bracket two. Detailed Implementation

[0022] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] Reference Figures 1-3 This utility model provides an embodiment of an internal drainage structure for an underground garage roof slab with a floor drain, comprising a garage floor slab 1, a wall 2 fixedly connected to the upper surface of the garage floor slab 1, a garage roof slab 3 fixedly connected to the top of the wall 2, a sump 4 provided inside the garage floor slab 1, a movable cover plate 5 installed outside the sump 4, a connecting bracket 6 fixedly connected to the outside of the wall 2, a drain pipe 7 snapped into the inside of the connecting bracket 6, a galvanized steel pipe 8 fixedly connected to the outside of the drain pipe 7, a water collection assembly 9 fixedly connected to the top of the galvanized steel pipe 8, the water collection assembly 9 including a cast iron floor drain 91 fixedly connected to the top of the galvanized steel pipe 8, a gate valve 11 installed outside the drain pipe 7, the gate valve 11 fixedly connected to the inside of the movable cover plate 5, and a drainage assembly installed inside the sump 4.

[0024] Specifically, the basement floor 1 provides stable support for the entire device. The basement floor 1 is used to fix the wall 2, the wall 2 is used to fix the basement roof 3, the water collection pit 4 opened inside the basement floor 1 is used to collect rainwater, the movable cover 5 is used to prevent people from falling into the water collection pit 4, the wall 2 is used to fix the connecting bracket 6, the connecting bracket 6 is used to fix the drainage pipe 7 to ensure the stability of the drainage pipe 7, the drainage pipe 7 is used to drain the rainwater collected by the cast iron floor drain 91 into the water collection pit 4, the galvanized steel pipe 8 is pre-embedded during the construction of the basement roof 3, the galvanized steel pipe 8 is used to facilitate the subsequent installation of the drainage pipe 7, the galvanized steel pipe 8 is used to fix the cast iron floor drain 91, the cast iron floor drain 91 is used to collect rainwater in the soil on top of the basement roof 3, and the gate valve 11 installed on the outside of the drainage pipe 7 is used to control the flow rate, the gate valve 11 extends into the water collection pit 4.

[0025] Reference Figure 2 The drainage assembly includes a drainage motor 12, which is externally installed inside the sump 4. The output end of the drainage motor 12 is connected to a forced-flow water pipe 13. A gate valve 14 is installed externally on the forced-flow water pipe 13. A connecting pipe 15 is fixedly connected to the other end of the gate valve 14. A connecting bracket 16 is snapped onto the outside of the connecting pipe 15. The connecting bracket 16 is externally fixedly connected to the outside of the wall 2, and the connecting pipe 15 is externally fixedly connected to the inside of the basement roof slab 3.

[0026] Specifically, the drainage motor 12 installed inside the sump 4 is used to output power to discharge the water inside the sump 4 from the forced drainage pipe 13. The gate valve 14 is used to control the flow rate of the forced drainage pipe 13. The connecting pipe 15 is connected to the gate valve 14 and is used to connect to the external municipal pipeline. The connecting bracket 16 is used to fix the connecting pipe 15.

[0027] Reference Figure 3 The galvanized steel pipe 8 is externally fixedly connected to a waterproof wing ring 10. Both the galvanized steel pipe 8 and the waterproof wing ring 10 are externally fixedly connected to the interior of the basement roof slab 3.

[0028] Specifically, the galvanized steel pipe 8 is used to fix the waterproof wing ring 10, which is used to prevent water in the soil on top of the basement roof slab 3 from entering the interior of the basement roof slab 3.

[0029] Reference Figure 3 The cast iron floor drain 91 has a permeable non-woven fabric layer 92 fixedly connected internally, and a graded support layer 93 fixedly connected to the lower surface of the permeable non-woven fabric layer 92. A water storage layer 94 is fixedly connected to the lower surface of the graded support layer 93. A seepage layer 95 is fixedly connected to the lower surface of the water storage layer 94, and a wire mesh layer 96 is fixedly connected to the lower surface of the seepage layer 95. The lower surface of the wire mesh layer 96 is fixedly connected to the top of the drain pipe 7.

[0030] Specifically, the cast iron drain 91 is used to fix the permeable non-woven fabric layer 92, which is permeable to water. The permeable non-woven fabric layer 92 is permeable to water but protects the soil on the top of the basement roof slab 3 from erosion. The graded support layer 93 is composed of graded crushed stone to support the permeable non-woven fabric layer 92. The water storage layer 94 is filled with biological peat sponge, which can quickly absorb the water flowing into the graded support layer 93. The permeable layer 95 is filled with waste concrete particles, which can drain the water inside the water storage layer 94 in a timely manner. The wire mesh layer 96 is used to protect the material of the permeable layer 95 from erosion and to drain water into the drain pipe 7 in a timely manner.

[0031] Working principle: When using this device, rainwater in the soil on top of the garage roof slab 3 is collected through the cast iron drain 91 installed inside the garage roof slab 3. The rainwater reaches the inside of the collection pit 4 through the cast iron drain 91 and the drainage pipe 7. The drainage motor 12 is started to output power to discharge the rainwater into the municipal pipeline through the forced drainage pipe 13. This achieves the effect of shortening the drainage path, improving drainage efficiency, and reducing the risk of leakage on the garage roof. During the construction period, it can also shorten the construction period, improve construction efficiency, and reduce project costs.

[0032] Through the combined action of the permeable non-woven fabric layer 92, graded support layer 93, water storage layer 94, seepage layer 95, and wire mesh layer 96 inside the cast iron floor drain 91, the soil on top of the basement roof slab 3 is prevented from being lost during drainage.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An internal drainage structure for the roof slab of an underground garage with floor drains, comprising a garage floor slab (1), characterized in that: A wall (2) is fixedly connected to the upper surface of the basement floor slab (1), and a basement roof slab (3) is fixedly connected to the top of the wall (2). A water collection pit (4) is provided inside the basement floor slab (1), and a movable cover plate (5) is installed outside the water collection pit (4). A connecting bracket (6) is fixedly connected to the outside of the wall (2), and a drain pipe (7) is snapped into the inside of the connecting bracket (6). A galvanized steel pipe (8) is fixedly connected to the outside of the drain pipe (7), and a water collection assembly (9) is fixedly connected to the top of the galvanized steel pipe (8). The water collection assembly (9) includes a cast iron floor drain (91), which is fixedly connected to the top of the galvanized steel pipe (8). A gate valve (11) is installed outside the drain pipe (7), which is fixedly connected to the inside of the movable cover plate (5). A drainage assembly is installed inside the water collection pit (4).

2. The underground garage roof slab internal drainage structure with floor drain as described in claim 1, characterized in that: The drainage assembly includes a drainage motor (12), which is externally installed inside the sump (4). The output end of the drainage motor (12) is connected to a forced-flow water pipe (13), and a gate valve (14) is installed externally on the forced-flow water pipe (13). The other end of the gate valve (14) is fixedly connected to a connecting pipe (15), and a connecting bracket (16) is snapped onto the outside of the connecting pipe (15).

3. The underground garage roof slab internal drainage structure with floor drain as described in claim 2, characterized in that: The external fixed connection of the second connecting bracket (16) is to the outside of the wall (2), and the external fixed connection of the connecting pipe (15) is to the inside of the basement roof plate (3).

4. The underground garage roof slab internal drainage structure with floor drain as described in claim 1, characterized in that: A waterproof wing ring (10) is fixedly connected to the outside of the galvanized steel pipe (8), and both the galvanized steel pipe (8) and the waterproof wing ring (10) are fixedly connected to the inside of the basement roof plate (3).

5. The underground garage roof slab internal drainage structure with floor drain as described in claim 1, characterized in that: The cast iron floor drain (91) has a permeable non-woven fabric layer (92) fixedly connected inside, and a graded support layer (93) is fixedly connected to the lower surface of the permeable non-woven fabric layer (92).

6. The underground garage roof slab internal drainage structure with floor drain as described in claim 5, characterized in that: A water storage layer (94) is fixedly connected to the lower surface of the graded support layer (93).

7. The underground garage roof slab internal drainage structure with floor drain as described in claim 6, characterized in that: A permeable layer (95) is fixedly connected to the lower surface of the water storage layer (94), and a wire mesh layer (96) is fixedly connected to the lower surface of the permeable layer (95).

8. A drainage structure for an underground garage roof slab with a floor drain as described in claim 7, characterized in that: The lower surface of the wire mesh layer (96) is fixedly connected to the top of the drain pipe (7).