A drain device for draining water in a recessed bathroom
By designing a water accumulation drainage device, the problem of water accumulation and corrosion in the bathroom with lowered floor slabs was solved, achieving efficient collection and drainage of water and improving the building's waterproof performance and service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- THE THIRD CONSTR OF CHINA CONSTR EIGHTH ENG BUREAU
- Filing Date
- 2025-05-14
- Publication Date
- 2026-06-02
Smart Images
Figure CN224314293U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a drainage device for a recessed bathroom, belonging to the field of drainage equipment technology. Background Technology
[0002] In building bathroom drainage systems, the use of a lowered slab for same-floor drainage is quite common. However, with long-term use of the bathroom, waterproofing measures may fail in certain areas, leading to water leakage into the lowered slab area.
[0003] In existing technologies, the lowered slab areas of building bathrooms often lack drainage systems, making it difficult to drain accumulated water. Prolonged water accumulation can corrode the building structure, breed bacteria, and potentially cause leaks to floors below, affecting the building's functionality and residents' quality of life. Current drainage systems have limited capacity to handle this type of water accumulation and lack effective drainage devices. Therefore, there is an urgent need for a water drainage device for lowered slab bathrooms to solve the problem of water seepage into the lowered slab area after waterproofing measures fail, leading to corrosion and impacting the building's usability due to the lack of drainage systems. Utility Model Content
[0004] The purpose of this utility model is to provide a drainage device for a recessed bathroom to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a drainage device for a recessed bathroom, comprising a drainage device and a drainage pipe assembly, the drainage pipe assembly comprising a plurality of drainage pipes, each drainage pipe having a drainage hole on its body, and the plurality of drainage pipes being installed in the recessed area of the building; one end of each drainage pipe is connected to the drainage device; the other end of the drainage device, away from the drainage pipe, is connected to the main drainage pipe.
[0006] Specifically, the drainage pipes are divided into a first-direction drainage pipe and a second-direction drainage pipe according to the installation direction along the drop plate area, and the first direction and the second direction are perpendicular to each other.
[0007] Specifically, one end of the first-direction drain pipe is connected to the drain valve via a connector, and one end of the second-direction drain pipe is connected to the first-direction drain pipe via a connector.
[0008] Specifically, there must be at least one first-direction drain pipe and one second-direction drain pipe.
[0009] Specifically, the area on the drain pipe facing the drop plate area has several drain holes evenly distributed along the circumferential direction of the pipe axis.
[0010] Specifically, a filter element is laid on the outer side of the drain pipe.
[0011] Specifically, the drainer includes a drainer body and a drain riser; the drain riser is installed in the building through the drainer body, and one end of it is connected to the main drain pipe.
[0012] Specifically, the drainer body is an open-top, hollow box structure, with an installation through hole at the bottom closed end of the box structure; the drain riser is installed through the installation through hole into the drainer body, and the drain riser has a first drain hole on the pipe body inside the hollow box of the drainer body; the drain pipe is connected to the box structure of the drainer body.
[0013] Specifically, the first drain hole is opened in the pipe body of the drain riser near the bottom closed end box of the drainer body, and there are several first drain holes, which are evenly distributed along the circumferential direction of the drain riser axis; a one-way valve that opens towards the drain riser is installed at the first drain hole.
[0014] Specifically, the drainage riser includes an integrally formed first riser and a second riser; the first riser is installed radially and vertically in the mounting through hole of the drain body, and the second riser is installed horizontally and vertically in the first riser; both ends of the first riser are connected to the main drainage pipe through connectors, and the end of the second riser away from the first riser is connected to the drain pipe of the bathroom fixture through a connecting pipe.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] 1. This application involves installing a drainage device and a drainage pipe assembly, the drainage pipe assembly comprising several drainage pipes, which are installed in the lowered slab area of the building. The drainage device is connected to the building's main drainage pipe, and the drainage pipes are then connected to the drainage device. Drainage holes are provided in the drainage pipes to collect accumulated water, allowing water seeping into the lowered slab area to flow through the drainage pipes to the drainage device, and finally into the main drainage pipe. This drainage device effectively collects and removes accumulated water in the lowered slab area, preventing long-term water retention from damaging the building structure, improving the waterproofing and drainage performance of the bathroom, and extending the building's service life.
[0017] 2. Based on the foregoing, the drainage pipe of this application is divided into a first-direction drainage pipe and a second-direction drainage pipe according to the installation direction along the lowered slab area, and the first and second directions are perpendicular to each other. By setting two perpendicular drainage pipes, the water collection requirements of the bathroom in two directions are met, thereby improving the water collection effect.
[0018] 3. Based on the foregoing, one end of the first directional drainage pipe of this application is connected to the drain facilitator via a connector, and one end of the second directional drainage pipe is connected to the first directional drainage pipe via a connector. This allows accumulated water to be collected by both the first and second directional drainage pipes, and ultimately discharged into the drain facilitator via the first directional drainage pipe, thus simplifying pipeline design and improving construction efficiency.
[0019] 4. Based on the foregoing, the number of first-direction drainage pipes and second-direction drainage pipes in this application is at least one, so that an appropriate number of drainage pipes can be selected according to the construction area of the lowered slab area, thereby improving drainage efficiency and construction applicability.
[0020] 5. Building upon the foregoing, this application, in order to further improve water collection efficiency, includes evenly spaced drainage holes along the circumferential direction of the pipe body facing the lowered plate area. This enables multi-directional water collection. Simultaneously, a filter element is installed on the outer side of the drainage pipe to filter out impurities in the water, preventing them from entering the drainage pipe and causing blockages, thus reducing subsequent maintenance costs.
[0021] 6. Based on the foregoing, the drainage device of this application includes a drainage device body and a drainage riser. The drainage riser is installed in the building through the drainage device body, and one end of it is connected to the main drainage pipe. The drainage device body is an open-top, hollow box structure, allowing the drainage riser to be installed in the building through the drainage device body, thereby improving the overall installation stability of the drainage device. One end of the drainage riser is connected to the main drainage pipe, and the other end is connected to the drain pipe of the bathroom fixtures via a connecting pipe, achieving centralized sewage discharge. The drainage pipe is connected to the box of the drainage device body, allowing accumulated water to flow into the hollow box of the drainage device body and then be discharged into the drainage system through the first drain hole on the drainage riser. The drainage device of this application has a simple overall structure, can preferably be made of common PVC material, has low cost, is easy to install, and is suitable for drainage renovation projects in newly built and existing lowered-slab bathrooms, possessing good promotional and application value.
[0022] 7. Based on the foregoing, the number of first drain holes on the drainage riser of this application is several, and they are evenly spaced along the circumference of the drainage riser. In addition, a one-way valve is installed at the first drain hole to ensure that the accumulated water can only be discharged into the drainage riser in one direction, which can avoid backflow and reduce the generation of odor in the drainage pipe. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of a water drainage device for a recessed bathroom, as shown in the embodiment.
[0024] Figure 2 for Figure 1Sectional view at point AA;
[0025] Figure 3 for Figure 1 Sectional view at point BB;
[0026] Figure 4 A schematic diagram of the installation plan of the water drainage device for a recessed bathroom as an example (1);
[0027] Figure 5 A schematic diagram (2) of the installation plan of a drainage device for a recessed bathroom is shown in the embodiment. Detailed Implementation
[0028] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.
[0029] Please see Figures 1-5 This embodiment discloses a drainage device for a lowered-slab bathroom, comprising a drainage device 4 and a drainage pipe assembly. The drainage pipe assembly includes two drainage pipes 8, each with a drainage hole. The two drainage pipes are installed in the lowered-slab area 11 of the bathroom. One end of each drainage pipe is connected to the drainage device 4, and the other end of the drainage device, away from the drainage pipe, is connected to the main drainage pipe 1. In this embodiment, the drainage device 4 is located at the bottom of the lowered-slab backfill area, near the bathroom exterior wall 2 and the pipe well enclosure 3. Its installation height is lower than the finished ground level of the lowered-slab area to facilitate the collection of accumulated water within the lowered-slab area.
[0030] In this embodiment, the two drain pipes 8 are divided into a first-direction drain pipe 80 and a second-direction drain pipe 81 according to the installation direction along the lower plate area, and the first direction and the second direction are perpendicular to each other. In this embodiment, one end of the first-direction drain pipe is connected to the drain device through a connector, and one end of the second-direction drain pipe is connected to the first-direction drain pipe through a connector.
[0031] Furthermore, in this embodiment, the drainage pipe has five rows of drainage holes 9 evenly distributed at 60° intervals along the circumferential direction of the pipe body facing the lowered plate area. Each row of drainage holes is evenly distributed along the pipe body axis. In addition, the outer side of the drainage pipe in this embodiment is covered with permeable geotextile 10.
[0032] In addition, the drain 4 in this embodiment includes a drain body 40 and a drain riser 41; the drain riser is installed in the building through the drain body, and one end of it is connected to the main drain pipe 1. The drain body 40 in this embodiment is a box structure with an open top and a hollow interior, and a mounting through hole is provided at the closed bottom end of the box structure; the drain riser is installed through the mounting through hole into the drain body, and the drain riser 41 is located on the pipe body of the hollow box inside the drain body, with three first drain holes 42 evenly distributed along the circumference of the pipe body; the drain pipe is connected to the box structure of the drain body. Furthermore, in this embodiment, a one-way valve 43 that opens towards the drain riser is installed at the first drain hole.
[0033] In this embodiment, the drainage riser 41 includes an integrally formed first riser 410 and a second riser 411. The first riser is installed radially and vertically in the mounting through hole of the drain body, and the second riser is installed horizontally and vertically on the first riser. Both ends of the first riser are connected to the main drainage pipe 1 through connectors, and the end of the second riser away from the first riser is connected to the drain pipe of the bathroom fixtures through a connecting pipe 44. The bathroom fixtures in this embodiment include a bathtub 5, a toilet 6, and a washbasin 8.
[0034] Working principle: In this embodiment, the main drainage pipe is made of PVC material, with a specification of D110, and is used for drainage and sewage discharge in the building. The drain valve is also made of PVC material, and both the drainage riser and the drain pipe are made of PVC material, with the drain pipe specification being DN15 and the drainage hole diameter being φ5mm.
[0035] Before backfilling the lowered slab area in the bathroom, the installation location of the drain assembly is determined based on the bathroom design drawings and the actual construction site. In this embodiment, the location is chosen near the bottom of the lowered slab backfill area, close to the bathroom's exterior wall and the pipe enclosure. During component installation, the PVC main drain pipe is installed in place according to design requirements and construction specifications, ensuring the pipe is vertical, securely fixed, and well-sealed at connections. When installing the drain assembly, the bottom of the lowered slab backfill area is cleaned at the determined installation location, and the drain assembly is placed in place, followed by the installation of the drain riser. Sealing is then performed at the junctions between the drain assembly and surrounding structures (such as the lowered slab backfill area and the bathroom's exterior wall), using waterproof sealant or similar materials to prevent water leakage from the connections. Then, according to the construction drawings, two drain pipes are laid in the lowered slab area and connected using connectors, then connected to the drain assembly. Finally, a permeable geotextile is laid on the outside of the drain pipes and secured, ensuring the geotextile covers the drainage holes smoothly and without wrinkles. Finally, install sanitary fixtures. After the drain faucet is installed and inspected, install sanitary fixtures such as bathtubs, toilets, and washbasins according to the standard construction process, and correctly connect their drainage pipes to the drainage risers.
[0036] After the components are installed, the post-installation inspection process begins. First, check that all connections of the drainage device are secure, the seals are good, and there are no loose parts or leaks. Inject a certain amount of water into the lowered area to simulate water accumulation and observe whether the drainage device can collect and discharge water normally, whether the drainage process is smooth, and whether there are any blockages. Check the permeable geotextile for damage or displacement; repair or adjust any problems promptly. After passing the inspection, backfill the lowered area and complete the subsequent construction.
[0037] In this embodiment, when the bathroom waterproofing fails and water leaks into the lowered slab area, the water flows through the drain hole of the drain pipe and into the hollow box inside the drain body under gravity. Due to the filtering effect of the permeable geotextile, debris is blocked. The water entering the drain body is guided to the main drain pipe through the one-way valve of the first drain hole and is eventually discharged from the building along with the sewage, thus achieving effective drainage of water in the lowered slab area.
[0038] The embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above embodiments. For those skilled in the art, after learning the contents of the present invention, several equivalent changes and substitutions can be made without departing from the principle of the present invention. These equivalent changes and substitutions should also be considered to fall within the protection scope of the present invention.
Claims
1. A drainage device for a recessed bathroom, comprising a drainage device and a drainage pipe assembly, characterized in that: The drainage pipe assembly includes several drainage pipes, each with a drainage hole on its body, and the drainage pipes are installed in the lowered slab area of the building. One end of each drainage pipe is connected to a drainage device, and the other end of the drainage device, away from the drainage pipe, is connected to the main drainage pipe.
2. A drainage device for a recessed bathroom according to claim 1, characterized in that: The drainage pipe is divided into a first-direction drainage pipe and a second-direction drainage pipe according to the installation direction along the drop plate area, and the first direction and the second direction are perpendicular to each other.
3. A drainage device for a recessed bathroom according to claim 2, characterized in that: One end of the first directional drain pipe is connected to the drain valve via a connector, and one end of the second directional drain pipe is connected to the first directional drain pipe via a connector.
4. A drainage device for a recessed bathroom according to claim 2, characterized in that: The number of the first-direction drain pipe and the second-direction drain pipe is at least one.
5. A drainage device for a recessed bathroom according to claim 1, characterized in that: The area on the pipe facing the drop plate area has several drainage holes evenly distributed along the circumferential direction of the pipe axis.
6. A drainage device for a recessed bathroom according to claim 1, characterized in that: The outer side of the drain pipe is fitted with a filter element.
7. A drainage device for a recessed bathroom according to claim 1, characterized in that: The drain device includes a drain device body and a drainage riser; the drainage riser is installed on the building through the drain device body, and one end of it is connected to the main drainage pipe.
8. A drainage device for a recessed bathroom according to claim 7, characterized in that: The drainer body is an open-top, hollow box structure with an installation through hole at the bottom closed end of the box structure; the drain riser is installed through the installation through hole into the drainer body, and the drain riser has a first drain hole on the pipe body inside the hollow box of the drainer body; the drain pipe is connected to the box structure of the drainer body.
9. A drainage device for a recessed bathroom according to claim 8, characterized in that: The first drain hole is located on the pipe body of the drain riser near the bottom closed end box of the drainer body, and there are several first drain holes, which are evenly distributed along the circumferential direction of the drain riser axis; a one-way valve that opens towards the drain riser is installed at the first drain hole.
10. A drainage device for a recessed bathroom according to claim 7, characterized in that: The drainage riser includes an integrally formed first riser and a second riser; the first riser is installed radially and vertically in the mounting through hole of the drain body, and the second riser is installed horizontally and vertically on the first riser; both ends of the first riser are connected to the main drainage pipe through connectors, and the end of the second riser away from the first riser is connected to the drain pipe of the bathroom fixture through a connecting pipe.