A bathroom deodorization filter device
By installing a filter cylinder and filter cover in the bathroom floor drain system, combined with an S-shaped water trap and a high water seal, the problems of poor odor prevention and easy clogging of the floor drain are solved, achieving efficient drainage and odor prevention, and simplifying construction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ELEPHANT ARCHITECTURAL DESIGN CO LTD
- Filing Date
- 2025-07-23
- Publication Date
- 2026-07-24
AI Technical Summary
Existing bathroom floor drains have poor odor prevention and are prone to clogging. Floor drains in dry areas have low usage rates and are complicated to install. Furthermore, traditional U-shaped water seals are prone to failure, allowing odors to seep into the room.
Design a bathroom odor-proof filtration device. By installing a filter cylinder and filter cover between the dry area floor drain and the shower room floor drain, a double filtration is formed. The S-shaped water trap and high water seal height prevent odors from entering the room, and the inclined drain pipe accelerates drainage and avoids blockage.
It achieves effective odor prevention, reduces blockages, improves drainage, simplifies the construction process, avoids the risk of water leakage from openings in the floor slab, and keeps the indoor air fresh.
Smart Images

Figure CN224549262U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of toilet drainage devices, and in particular relates to a toilet odor-proof filter device. Background Technology
[0002] Floor drains in residential and hotel bathrooms need to be able to prevent objects from falling in and to prevent odors, which is directly related to the quality of daily life and health and safety.
[0003] In family bathrooms, hair, soap shavings, toiletries, and other debris can easily fall into the drain every day. Without an effective debris-prevention design, these debris will accumulate in the pipes, causing slow drainage or even complete blockage. In the event of a severe blockage, sewage may overflow. This problem is even more pronounced in hotels because of their higher usage frequency; even a slight oversight can lead to customer complaints and damage the hotel's reputation.
[0004] Floor drains are connected to the entire building's drainage system. Without proper odor prevention design, harmful gases and bacteria from the sewers can enter the room through the floor drains. These gases are not only unpleasant to smell, but may also contain substances harmful to the human body, such as hydrogen sulfide. In the high humidity of the bathroom environment, these gases can also breed more bacteria and mold. Hotel bathrooms pay particular attention to this, as unpleasant odors directly affect guests' stay experience and their evaluation of the hotel's hygiene.
[0005] At the same time, if the wastewater in the trap contains a lot of impurities and is not flushed in time, it will gradually produce an odor.
[0006] A good floor drain design needs to consider many aspects: it should effectively intercept various debris, form a reliable water seal to block odors, be durable and not easily damaged, and be easy to clean and maintain daily. Many high-quality floor drains now feature a removable filter design, making it easy to clean debris while maintaining smooth drainage; and a U-shaped water seal structure to ensure long-term effective odor prevention.
[0007] Whether it's a residence or a hotel, the choice of floor drain should not be overlooked during renovation.
[0008] Existing technologies: Current measures to prevent objects from falling into floor drains all rely on the drain cover filter itself.
[0009] Current odor-proofing measures for floor drains typically employ a U-shaped water seal structure.
[0010] Current technological shortcomings: 1. Current methods for preventing objects from falling into floor drains rely on the drain cover's filter screen itself. If the cover is damaged or missing, larger items can slip into the pipes. If valuables like necklaces get into the pipes, considerable force is required to disassemble and retrieve them. Furthermore, the drain cover filter screen is ineffective at preventing hair or dissolved debris (such as soap scum), which can slow down drainage or even cause blockages over time. Impurities in the water trap, if not flushed regularly, can also lead to unpleasant odors.
[0011] 2. Current odor prevention measures for floor drains mainly adopt a U-shaped water seal structure, which is technically mature and effective. However, in the dry area floor drain next to the toilet in the bathroom, the water in the water seal will evaporate due to the lack of drainage for a long time, causing odors to seep into the bathroom.
[0012] 3. Dry area floor drains are rarely used unless the sink overflows or the wet area floor drain fails. The traditional construction method for dry area floor drains is the same as for wet floor drains: a special pipe needs to be laid and a hole needs to be drilled in the bathroom floor slab. Waterproofing measures must be in place during construction, otherwise there is a risk of water leakage to the floor below.
[0013] Therefore, it is necessary to improve upon the above-mentioned issues. Utility Model Content
[0014] The purpose of this utility model is to provide a bathroom odor-proof filter device to solve the problems of poor odor-proof effect, easy clogging, poor drainage, and insufficient coordination between the floor drains in the dry area and the shower area in existing bathrooms.
[0015] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a bathroom odor-proof filtering device, comprising a bathroom floor slab frame; a dry area floor drain device and a shower room floor drain device assembled within and interconnected with the bathroom floor slab frame; the bathroom floor slab frame includes a structural slab and a surface layer laid on the structural slab; the dry area floor drain device is assembled within the surface layer, and the shower room floor drain device is assembled within the surface layer and the structural slab, and the dry area floor drain device and the shower room floor drain device are connected by a drain pipe; the dry area floor drain device includes a dry area floor drain and a vertically laid floor drain pipe, one end of the floor drain pipe is connected to the bottom of the dry area floor drain, and the other end of the floor drain pipe is connected to the dry area drain pipe; the shower room floor drain device includes a shower room floor drain and a vertically laid transition pipe; one end of the transition pipe is connected to the bottom of the shower room floor drain, and the other end of the transition pipe is connected to a water trap; the other end of the drain pipe is connected to the transition pipe; a filter cover is provided at the connection between the transition pipe and the water trap; a filter cylinder is placed inside the transition pipe, and the filter cylinder rests on top of the filter cover.
[0016] In a preferred embodiment of this utility model, the drain pipe is assembled inside the surface layer.
[0017] As a preferred embodiment of this utility model, the water trap is an S-shaped water trap.
[0018] As a preferred embodiment of this utility model, the height of the water seal area of the water trap is >50mm.
[0019] In a preferred embodiment of this invention, the water seal area of the water trap is lower than the drain outlet of the transition pipe.
[0020] As a preferred embodiment of this utility model, the drain pipe is inclined between the floor drain pipe and the transition pipe, and the drain pipe is inclined along the direction of water flow.
[0021] As a preferred embodiment of the present invention, the water filter cylinder includes a cylindrical body with an open top, a plurality of water filter holes formed at the bottom of the body, and a snap-fit edge formed on the inner circumferential side of the top of the body.
[0022] As a preferred embodiment of this utility model, the plurality of filter holes are circumferentially and equidistantly arranged at the bottom of the body.
[0023] As a preferred embodiment of this utility model, the main body is fixedly connected to the snap-edge and integrally formed.
[0024] As a preferred embodiment of this utility model, a gap is left between the end of the buckle and the filter hole in the vertical direction.
[0025] The beneficial effects of this utility model are: 1. This utility model has a simple structure. A filter cover is set at the connection between the transition pipe and the water trap. A filter cylinder is placed inside the transition pipe. The filter cover and filter cylinder are used to prevent objects from falling in and to clean up fallen objects. The filtration is thorough and reduces clogging. The filter cylinder and filter cover form a double filtration, which can intercept hair, debris and other impurities. The filter cylinder can be disassembled for cleaning and maintenance.
[0026] 2. This utility model has a clever design. The drain pipe in the dry area does not need to pass through the floor slab. Instead, it passes through the drain pipe in the shower room area above the surface structural slab. This eliminates the risk of water leakage caused by opening holes in the floor slab and utilizes the U-shaped water seal structure formed by the transition pipe in the shower room area and the drain pipe in the dry area to achieve the purpose of preventing odors. This avoids the failure of odor prevention caused by the U-shaped bend in the dry area being dry due to lack of water.
[0027] 3. This utility model has excellent odor prevention effect: the S-shaped water trap combined with a water seal height of >50mm can effectively block sewer odors, and the water seal position is reasonably designed to avoid failure caused by drainage impact.
[0028] 4. This utility model has efficient and smooth drainage: the dry area and the shower area are connected by an inclined drainage pipe, which uses gravity to accelerate drainage and avoid water accumulation.
[0029] 5. This utility model has a compact structure and is easy to install: the device is integrated into the surface layer and structural plate of the floor frame, without taking up extra space, and is suitable for most bathroom layouts. Attached Figure Description
[0030] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model; Figure 2 This is a schematic diagram of the structure of the filter cylinder according to an embodiment of the present utility model; Explanation of reference numerals in the attached drawings: 1. Dry area floor drain device; 2. Shower room floor drain device; 3. Bathroom floor slab frame; 4. Drain pipe; 5. Water trap; 6. Filter cover; 7. Structural slab; 8. Surface layer; 9. Filter cylinder; 10. Dry area floor drain; 11. Floor drain pipe; 20. Shower room floor drain; 21. Transition pipe; 90. Body; 91. Filter hole; 92. Edge trim. Detailed Implementation
[0031] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0033] Example 1
[0034] The purpose of this utility model is to provide a bathroom odor-proof and filtering device, including a bathroom floor slab frame 3; a dry area floor drain device 1 and a shower room floor drain device 2, which are installed in the bathroom floor slab frame 3 and are interconnected; the bathroom floor slab frame 3 includes a structural slab 7 and a surface layer 8 arranged on the structural slab 7; the dry area floor drain device 1 is installed in the surface layer 8, and the shower room floor drain device 2 is installed in the surface layer 8 and the structural slab 7, and the dry area floor drain device 1 and the shower room floor drain device 2 are connected by a drain pipe 4; the structural slab 7 is the main load-bearing structure of the bathroom floor slab, and the surface layer 8 is arranged on the structural slab 7 (such as a cement mortar layer or a tile layer) to achieve the functions of floor flatness and decoration.
[0035] The dry area floor drain device 1 includes a dry area floor drain 10 and a vertically arranged floor drain pipe 11. One end of the floor drain pipe 11 is connected to the bottom of the dry area floor drain 10, and the other end of the floor drain pipe 11 is connected to the dry area drain pipe 4. The shower room floor drain device 2 includes a shower room floor drain 20 and a vertically arranged transition pipe 21. One end of the transition pipe 21 is connected to the bottom of the shower room floor drain 20, and the other end of the transition pipe 21 is connected to a water trap 5. The other end of the drain pipe 4 is connected to the transition pipe 21, thus realizing the diversion of water accumulated in the dry area to the drainage path of the shower area.
[0036] This embodiment of a bathroom odor-proof filtering device connects the dry area floor drain device 1 and the shower room floor drain device 2. The shower room floor drain device 2, where water flow is more frequent during showering, is connected to the dry area floor drain device 1. Water in the drain pipe 11 of the dry area floor drain device 1 flows into the transition pipe 21 through the drain pipe 4 and is finally discharged into the water trap 5. The water trap 5 ensures that there is always water in the water trap 5, thereby preventing odors from the pipe from escaping into the room through the dry area floor drain device 1, causing unpleasant odors in the bathroom, and even preventing viruses and bacteria in the pipe from entering the room through this channel.
[0037] A filter cover 6 is installed at the connection between the transition pipe 21 and the water trap 5; it serves as a preliminary filter and provides support. A filter cylinder 9 is placed inside the transition pipe 21, resting on top of the filter cover 6. This utility model has a simple structure. A filter cover 6 is installed at the connection between the transition pipe 21 and the water trap 5. The filter cylinder 9, made of stainless steel, is placed inside the transition pipe 21 and can move up and down within the transition pipe 21. The filter cover and filter cylinder prevent objects from falling in and facilitate the cleaning of fallen objects, ensuring thorough filtration and reducing clogging. The filter cylinder and filter cover form a double filter, which can intercept hair, debris, etc., and the filter cylinder can be disassembled for cleaning, making maintenance convenient.
[0038] Drainage pipe 4 is installed inside surface layer 8; thus, the drain pipe 11 of dry area floor drain device 1 does not need to pass through the floor slab, but is inserted above the structural slab of this floor, eliminating the risk of water leakage from opening holes in the floor slab.
[0039] In this embodiment, the dry area floor drain device 1 and the shower room floor drain device 2 share a water trap 5, which can effectively prevent the odor prevention failure caused by the dry area U-shaped bend being dry.
[0040] The dry area floor drain device 1 and the shower room floor drain device 2 share a transition pipe of 3, which can effectively prevent objects falling into the dry area from being difficult to clean.
[0041] The water trap 5 is an S-shaped water trap; the water trap 5 bends back and forth in the vertical direction to achieve better gravity backflow prevention; in practical applications, the height of the water seal area of the water trap 5 can be set lower than the drain outlet of the transition pipe 21 to ensure that the water in the transition pipe 21 can flow into the water trap 5; to avoid the water seal being directly impacted by the drainage and causing failure.
[0042] Since the floor drain pipe 11, drain pipe 4, and transition pipe 21 are all located upstream of the water trap 5, it can be ensured that the floor drain pipe 11, drain pipe 4, and transition pipe 21 drain water through the water trap 5 each time, thus ensuring that the water in the water trap 5 is effectively replenished; in this way, the water trap 5 achieves the purpose of water sealing. Of course, in order to achieve a better water seal and to ensure smooth water flow, the shower room drain pipe is located at the bottom of the water trap 5, forming a height difference to ensure smooth water flow.
[0043] The water seal area height of trap 5 is >50mm; this ensures that the water seal does not easily dry out and maintains its odor-proof effect.
[0044] The water filter cylinder 9 includes a cylindrical body 90 with an open top. Multiple water filter holes 91 are formed at the bottom of the body 90, and the multiple water filter holes 91 are circumferentially and evenly distributed at the bottom of the body 90. A retaining edge 92 is formed on the inner side of the top of the body 90. The retaining edge 92 is provided at the top of the water filter cylinder 9 so that the water filter cylinder 9 can be held with a finger during cleaning.
[0045] The main body 90 is fixedly connected to the snap-edge 92 and is integrally formed; this improves the structural strength and overall robustness of the entire water filter cylinder 9, further ensuring safe use.
[0046] In the vertical direction, there is a gap between the end of the retaining edge 92 and the filter hole 91. This facilitates the removal of the filter cartridge 9 for cleaning and ensures that water flows smoothly out through the filter hole 91.
[0047] In use, water in the dry area enters the drain pipe 11 through the dry area floor drain 10, and then flows into the transition pipe 21 through the inclined drain pipe 4; water in the shower area enters the transition pipe 21 directly through the shower room floor drain 20; after the two merge, they are first filtered through the filter holes 91 of the filter cylinder 9 (intercepting large particles of debris), then filtered a second time through the filter cover 6, and finally flow into the water trap 5, and are discharged into the sewer after being sealed by a water seal. When cleaning, the filter cylinder 9 can be directly removed to empty the debris without disassembling the pipes.
[0048] Example 2
[0049] In another embodiment of the present invention, a bathroom odor-proof filter device is provided, wherein the drain pipe 4 is inclinedly arranged between the floor drain pipe 11 and the transition pipe 21. The drain pipe 4 is inclinedly buried in the surface layer 8 along the water flow direction (from the dry area to the shower area), and the inclination angle is preferably to ensure that the water flow does not stagnate (such as a slope of 1% to 3%). Since the floor drain pipe 11 is located at the upper end of the drain pipe 4, the inclined arrangement of the drain pipe 4 can ensure that the water in the floor drain pipe 11 located in the dry area can quickly flow into the transition pipe 21 under the action of gravity, thereby accelerating drainage by using gravity and avoiding water accumulation.
[0050] Other aspects of this embodiment can be found in Embodiment 1.
[0051] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
[0052] Although this document frequently uses reference numerals from the accompanying drawings, such as 1 for dry area floor drain, 2 for shower room floor drain, 3 for bathroom floor slab frame, 4 for drain pipe, 5 for water trap, 6 for filter cover, 7 for structural slab, 8 for surface layer, 9 for filter cylinder, 10 for dry area floor drain, 11 for floor drain pipe, 20 for shower room floor drain, 21 for transition pipe, 90 for body, 91 for filter hole, and 92 for edge fastening, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.
Claims
1. A toilet odor-proof filter device, characterized in that: The bathroom floor slab frame (3) includes a dry area floor drain device (1) and a shower room floor drain device (2) assembled within the bathroom floor slab frame (3) and interconnected with each other. The bathroom floor slab frame (3) includes a structural slab (7) and a surface layer (8) laid on the structural slab (7). The dry area floor drain device (1) is assembled within the surface layer (8), and the shower room floor drain device (2) is assembled within the surface layer (8) and the structural slab (7). The dry area floor drain device (1) and the shower room floor drain device (2) are connected by a drain pipe (4). The dry area floor drain device (1) includes a dry area floor drain (10) and a vertically laid floor drain pipe (11). (10) One end of the floor drain pipe (11) is connected to the floor drain pipe (11), and the other end of the floor drain pipe (11) is connected to the dry area drain pipe (4); the shower room floor drain device (2) includes a shower room floor drain (20) and a vertically arranged transition pipe (21); one end of the transition pipe (21) is connected to the shower room floor drain (20), and the other end of the transition pipe (21) is connected to the water trap (5); the other end of the drain pipe (4) is connected to the transition pipe (21); a filter cover (6) is set at the connection between the transition pipe (21) and the water trap (5); a filter cylinder (9) is placed inside the transition pipe (21), and the filter cylinder (9) is placed on top of the filter cover (6).
2. The toilet odor-proof filter device according to claim 1, characterized in that: The drain pipe (4) is installed inside the surface layer (8).
3. The toilet odor-proof filter device according to claim 1, characterized in that: The water trap (5) is an S-shaped water trap.
4. The toilet odor-proof filter device according to claim 1, characterized in that: The height of the water seal area of the water trap (5) is >50mm.
5. A toilet odor-proof filter device according to claim 1, characterized in that: The water seal area of the water trap (5) is lower than the drain outlet of the transition pipe (21).
6. A toilet odor-proof filter device according to claim 1 or 2, characterized in that: The drain pipe (4) is inclined between the floor drain pipe (11) and the transition pipe (21), and the drain pipe (4) is inclined along the direction of water flow.
7. A toilet odor-proof filter device according to claim 1, characterized in that: The filter cylinder (9) includes a cylindrical body (90) with an open top. Multiple filter holes (91) are formed at the bottom of the body (90), and a snap-edge (92) is formed on the inner circumferential side of the top of the body (90).
8. A toilet odor-proof filter device according to claim 7, characterized in that: The plurality of filter holes (91) are circumferentially and equidistantly arranged at the bottom of the body (90).
9. A toilet odor-proof filter device according to claim 7, characterized in that: The main body (90) is fixedly connected to the edge (92) and integrally formed.
10. A toilet odor-proof filter device according to claim 7, characterized in that: In the vertical direction, there is a gap between the end of the buckle (92) and the filter hole (91).