Floor drain structure suitable for old toilet transformation
The flange pipe fitting structure solves the problem of lowering the height of the drain pipe in the renovation of old bathrooms, ensuring the installation and drainage effect of the floor drain, avoiding water accumulation and odor in the bathroom, and achieving a simple and solid renovation effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUIDA RESIDENTIAL IND EQUIP (TANGSHAN) CO LTD
- Filing Date
- 2025-06-26
- Publication Date
- 2026-05-08
AI Technical Summary
During the renovation of old bathrooms, the removal of old floor drains during floor renovation causes the drain pipe opening to be lowered, making it impossible to install new floor drains. Furthermore, the existing solutions affect the drainage flow, leading to water accumulation or overflow problems.
The system adopts a flange pipe fitting structure, including a lower socket, a flange, and an upper socket. The lower socket is fitted onto the outside of the drain pipe, the flange is fixed to the original ground, and the drain body is snapped into the upper socket. PVC glue and waterproof sealant are used to ensure sealing and fixation.
It solves the problem of floor drain installation caused by the lowering of the drain pipe height, ensures that the drainage volume is not affected, eliminates bathroom odors and water accumulation, and is simple to operate and sturdy and durable.
Smart Images
Figure CN224213484U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sewer technology, and in particular to a floor drain structure suitable for the renovation of old bathrooms. Background Technology
[0002] Currently, a common problem in the renovation of old bathrooms is that the old floor drains inevitably need to be removed during the floor renovation process. This causes the original drain pipe opening to be flush with the bathroom floor slab, meaning the drain pipe opening is lowered, making it impossible to install new floor drains during the floor renovation process, which causes trouble for the renovation work of old bathrooms.
[0003] Currently, when renovating old bathrooms, PVC plugs are often used. The inner end of the plug is inserted into the original drain pipe opening to increase the height of the drain pipe opening, thus meeting the height requirements for the floor drain installation. However, this practice severely affects the drainage flow rate of the drain pipe. Drain pipes are typically DN50 PVC pipes with an inner diameter of approximately 45 mm. The plug's wall thickness is also 2.5 mm. Therefore, after inserting the plug, the maximum inner diameter of the drain pipe is 40 mm. Subtracting the diameter of the floor drain core, the remaining net drainage space will not meet the national standard requirements for floor drain drainage capacity, causing water to accumulate in the bathroom and not be drained in time, or even overflowing outside the bathroom. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide a floor drain structure suitable for the renovation of old bathrooms. The structure is simple, the operation is convenient, and it can solve the problem of water accumulation in the bathroom caused by insufficient drainage capacity of the floor drain.
[0005] This utility model is achieved through the following technical solution:
[0006] A drain structure suitable for the renovation of old bathrooms includes a flange fitting and a drain body. The flange fitting includes a lower socket, a flange, and an upper socket. The upper socket is located above the lower socket and is interconnected. The flange is arranged around the outer edge of the junction of the upper and lower sockets, and the upper socket, flange, and lower socket are coaxial. The lower socket is fitted onto the drain pipe of the bathroom and sealed and fixed. The flange is fixedly placed on the original floor of the bathroom. The upper end of the upper socket is lower than the smooth surface of the renovated floor tiles. The drain body is snapped into the upper socket.
[0007] Furthermore, the flange edge has a downward-bent section.
[0008] The optimized design features rounded bends at the bends, and transition rounded corners are provided at the joints between the flange and the upper and lower sockets.
[0009] The optimized design places the upper end of the upper socket 3mm lower than the smooth surface of the bathroom floor tiles after renovation.
[0010] The optimized design involves fitting the inner wall of the lower socket into the outer wall of the bathroom drain pipe opening, with the inner wall of the lower socket connected to the outer wall of the bathroom drain pipe opening via a PVC adhesive layer.
[0011] The optimized design uses a waterproof sealant layer to fix the flange to the original bathroom floor.
[0012] In the optimized version, an adhesive layer is laid on the original bathroom floor, the flange is embedded in the adhesive layer, and floor tiles are laid on top of the adhesive layer.
[0013] The optimized drain body is fixed to the upper outlet with waterproof sealant.
[0014] Beneficial effects of the utility model:
[0015] This utility model provides a floor drain structure suitable for the renovation of old bathrooms. During the renovation process, a flange fitting is installed to solve the problem of the drain pipe opening shifting downwards, making it impossible to install a new floor drain during floor renovation. The structure is simple and easy to operate. Furthermore, because the lower socket of the flange fitting is fitted onto the bathroom's drain pipe and sealed securely, it prevents backflow of odors and foul smells caused by inadequate drainage. In later use, the floor drain's drainage volume remains unaffected, preventing water accumulation in the bathroom due to insufficient drainage. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of this utility model.
[0017] Figure 2 This is a schematic diagram of the flange pipe fitting structure of this utility model.
[0018] Figure 3 This is a schematic diagram of the building structure after the floor drain has been removed from an old bathroom in the existing technology.
[0019] Figure 4 This is a schematic diagram of the flange pipe fitting installation structure of this utility model.
[0020] Figure 5 This is a schematic diagram of the structure of the drain body before installation after floor renovation according to this utility model.
[0021] In the diagram: 1. Flange fittings; 101. Lower socket; 102. Flange; 103. Upper socket; 104. Bend; 105. Transition fillet; 2. Civil engineering floor slab; 3. Original bathroom floor; 4. Drainage pipe; 401. Drainage pipe inlet; 5. Adhesive layer; 6. Floor tile; 7. Floor drain body. Detailed Implementation
[0022] A floor drain structure suitable for the renovation of old bathrooms, its structural diagram is as follows: Figure 1 As shown, it includes a flange fitting 1 and a floor drain body 7. The structural schematic diagram of the flange fitting is shown below. Figure 2 As shown, it includes a lower socket 101, a flange 102, and an upper socket 103. The upper socket is located above the lower socket and is interconnected. The flange is arranged around the outer edge of the junction of the upper and lower sockets, and the upper socket, flange, and lower socket are coaxial. The lower socket is fitted onto the drain pipe 4 of the bathroom and is sealed and fixed. The flange is fixedly placed on the original floor 3 of the bathroom. The upper end of the upper socket is lower than the smooth surface of the renovated floor tiles 6 of the bathroom. The drain body is snapped into the upper socket.
[0023] During the renovation of old bathrooms, a flange fitting was installed to solve the problem of the drain pipe opening being lowered during the renovation process, which prevented the installation of new floor drains during the floor renovation. This reduced the risk of water seepage and leakage when the bathroom floor drain and drain pipe are connected. The fitting is also simple in structure and easy to operate.
[0024] In addition, since the lower socket of the flange fitting is fitted outside the drain pipe of the bathroom and sealed and fixed, the problem of backflow of odors and foul smells in the bathroom caused by the poor sealing of the drain pipe is eliminated. In addition, the drainage volume of the floor drain is not affected during the later use, preventing water accumulation in the bathroom from not being discharged in time due to insufficient drainage volume of the floor drain, or even overflowing outside the bathroom.
[0025] Furthermore, the flange edge is provided with a downward-bent bend 104, which can provide a larger contact area between the flange and the adhesive layer, resulting in a stronger bond.
[0026] The optimized design features rounded bends at the bends, and 105mm transition fillets are provided at the joints between the flange and the upper and lower sockets. This improves the strength of the flange connections and bends, reduces deformation, and enhances sealing performance.
[0027] The optimized design features an upper surface of the drain outlet that is 3mm lower than the smooth surface of the bathroom floor tiles after renovation, allowing for sufficient installation space for the drain body and facilitating the rapid drainage of water from the bathroom floor to the drain.
[0028] The optimized design involves fitting the inner wall of the lower socket into the outer wall of the bathroom drain pipe opening, with the inner wall of the lower socket connected to the outer wall of the bathroom drain pipe opening via a PVC adhesive layer. During construction, the PVC adhesive layer can be applied to the inner wall of the lower socket, making the operation convenient and ensuring a seal between the inner wall of the lower socket and the bathroom drain pipe opening.
[0029] The optimized design uses a waterproof sealant layer to fix the flange to the original bathroom floor, making the operation convenient and easy to secure the flange to the original bathroom floor.
[0030] In the optimized design, an adhesive layer 5 is laid on the original bathroom floor, and the flange is embedded in the adhesive layer. Floor tiles are then laid on top of the adhesive layer. The adhesive layer can be cement mortar or tile adhesive. Floor tiles are then laid on top of the adhesive layer, making the flange more firmly bonded to the original bathroom floor and the floor tiles.
[0031] The optimized design uses waterproof sealant to fix the drain body to the upper socket. During construction, the waterproof sealant can be applied around the upper socket, making the process convenient and quick.
[0032] The construction process of this utility model is as follows:
[0033] When renovating an old bathroom, firstly, the original floor drain is removed, and the original bathroom floor 3 is cleaned and waterproofed. Below the original bathroom floor 3 is the civil engineering floor slab 2. Then, the outer wall of the drain pipe opening 401 and the surrounding original floor are cleaned to leave space for the installation of flange fittings, as detailed below. Figure 3 As shown.
[0034] Next, thoroughly apply PVC adhesive to the inner wall of the lower socket 101 of flange fitting 1, and apply waterproof sealant to the lower surface of flange 102. Then, insert the lower socket 101 into the drain pipe opening 401 and tighten it, as follows: Figure 4 As shown.
[0035] After compaction, the floor is renovated, using cement mortar or tile adhesive as a bonding layer, and then the floor tiles are laid (6, as detailed below). Figure 5 As shown.
[0036] After the ground is completely dry, apply waterproof sealant around the upper socket 103 of flange fitting 1, and then complete the installation and connection between the drain body 7 and the upper socket 103 of flange fitting 1 to complete the renovation of the old bathroom floor.
[0037] In summary, the floor drain structure proposed in this utility model is suitable for the renovation of old bathrooms. It has a simple structure, is easy to operate, and can solve the problem of water accumulation in the bathroom caused by insufficient drainage capacity of the floor drain.
[0038] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A floor drain structure suitable for the renovation of old bathrooms, characterized in that, The system includes flange fittings and a floor drain body. The flange fittings include a lower socket, a flange, and an upper socket. The upper socket is located above the lower socket and is interconnected. The flange is arranged around the outer edge of the junction of the upper and lower sockets, and the upper socket, flange, and lower socket are coaxial. The lower socket is fitted onto the drain pipe of the bathroom and is sealed and fixed. The flange is fixedly placed on the original floor of the bathroom. The upper end of the upper socket is lower than the polished surface of the bathroom floor tiles after renovation. The floor drain body is snapped into the upper socket.
2. The drain structure suitable for the renovation of old bathrooms according to claim 1, characterized in that, The flange edge has a downward-bent section.
3. A floor drain structure suitable for the renovation of old bathrooms according to claim 2, characterized in that, The bending section is a rounded bend, and the flange is provided with transition rounded corners at the joints with the upper and lower bearing ports.
4. The drain structure suitable for the renovation of old bathrooms according to claim 1, characterized in that, The upper end of the upper socket is 3mm lower than the smooth surface of the bathroom floor tiles after renovation.
5. A floor drain structure suitable for the renovation of old bathrooms according to claim 1, characterized in that, The inner wall of the lower socket is fitted into the outer wall of the drain pipe opening in the bathroom, and the inner wall of the lower socket and the outer wall of the drain pipe opening in the bathroom are connected by a PVC adhesive layer.
6. A floor drain structure suitable for the renovation of old bathrooms according to claim 1, characterized in that, The flange is fixed to the original bathroom floor using a waterproof sealant layer.
7. A floor drain structure suitable for the renovation of old bathrooms according to claim 6, characterized in that, An adhesive layer was laid on the original floor of the bathroom, the flange was embedded in the adhesive layer, and floor tiles were laid on top of the adhesive layer.
8. A floor drain structure suitable for the renovation of old bathrooms according to claim 1, characterized in that, The drain body is fixed to the upper outlet with waterproof sealant.