Water seal floor drain with air block breaking mechanism
By incorporating a detachable drain plug and a frustum-shaped structure into the water-sealed floor drain, the problem of poor drainage caused by air blockage in the water-sealed floor drain is solved, achieving normal drainage and odor prevention under different drain pipe structures.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 赵晓辰
- Filing Date
- 2025-05-23
- Publication Date
- 2026-05-08
AI Technical Summary
Existing water-sealed floor drains are prone to air blockage when there is a water trap inside the drain pipe, which slows down the drainage efficiency or even stops the drainage.
A water-sealed floor drain with an air-blocking mechanism has been designed, including a floor drain body, a water seal cover, and a siphon column. By setting a detachable jacking component on the top of the water seal cover, the sealing and plugging are achieved using a frustum-shaped structure and overlapping ring, thus preventing air blockage.
It effectively eliminates air blockage in water-sealed floor drains, enabling them to drain normally under different drain pipe structures, maintaining the water seal's odor-proof function, and improving drainage efficiency.
Smart Images

Figure CN224213480U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of drainage facilities technology, specifically a water-sealed floor drain with an air-blocking mechanism. Background Technology
[0002] Floor drains are commonly used bathroom products. They are an important interface connecting the drainage pipe system to the indoor floor. As a crucial component of the drainage system in a residence, their performance directly affects indoor air quality and is very important for controlling odors in the bathroom.
[0003] A water-sealed floor drain is a device that uses a physical structure to prevent the backflow of odors from the sewer system. Internally, it typically employs a U-shaped or bell-shaped water trap, creating a liquid seal barrier. When water flows through the drain, some water remains in the trap, forming a water seal height (national standards require a minimum of 50mm), thus isolating sewer gases from indoor air. The U-shaped water trap utilizes the principle of communicating vessels in physics, achieving a seal through water level balance on both sides. Even with changes in sewer gas pressure, the water seal buffers the pressure difference, preventing odors from escaping. Only water-sealed technology can achieve truly continuous and effective odor prevention.
[0004] One problem with existing water-sealed floor drains is that when there is a water trap in the drain pipe, a sealed air section is formed between the water seal structure in the floor drain and the water seal structure of the water trap. This situation will cause the floor drain to stop draining water, which is called air blockage. Utility Model Content
[0005] This invention overcomes the shortcomings of the prior art by proposing a water-sealed floor drain with an air-blocking mechanism; it solves the problem that existing water-sealed floor drains suffer from slow drainage efficiency or even no drainage due to air blockage.
[0006] To achieve the above objectives, this utility model is implemented through the following technical solution:
[0007] A water-sealed floor drain with an air-blocking mechanism includes a drain body and a water seal cover. The drain body has a tubular drainage chamber inside. The water seal cover opens downwards and is fastened above the drainage chamber to form a water seal between the drain body and the drainage chamber. A siphon column is provided inside the water seal cover. The siphon column is located inside the drainage chamber. A through hole is provided at the top of the water seal cover, located inside the siphon column. A detachable jacking component is connected to the through hole. The jacking component closes and seals the through hole.
[0008] Furthermore, the lower part is a frustum-shaped block structure, with the top diameter of the lower part being larger than the bottom diameter.
[0009] Furthermore, an overlapping ring is provided at the top edge of the punching component; the overlapping ring is located above the through hole and covers the joint between the through hole and the punching component.
[0010] Furthermore, the lower part and the overlapping ring are integrated and are both made of silicone or PP material.
[0011] Furthermore, the inner wall of the through hole fits against the outer wall of the punching component, and the punching component is inserted into the through hole to seal it.
[0012] Furthermore, the inner wall of the through hole is bonded to the outer wall of the punch component using glass glue.
[0013] Furthermore, the bottom of the punch-down component has an open structure, and the inside of the punch-down component has a hollow structure.
[0014] Furthermore, a drain frame is connected to the top of the drain body; a drain grate is snapped into the upper part of the drain frame.
[0015] The beneficial effects of this utility model compared to the prior art are as follows:
[0016] The water-sealed floor drain of this invention features a unique venting structure, effectively preventing water from being blocked by air in the pipes. The addition of an air-blocking mechanism further enhances the water-sealed floor drain's adaptability, freeing it from the limitations of a water trap. When there is no air blockage in the drain pipe, this mechanism restores the water seal, maintaining its odor-proof function. This effectively solves the problem of slowed drainage or even complete failure to drain in existing water-sealed floor drains due to air blockage. Attached Figure Description
[0017] Figure 1 This is a cross-sectional view of the water-sealed floor drain with an air-blocking mechanism described in this utility model;
[0018] Figure 2 yes Figure 1 A schematic diagram showing the position of the lower component of the middle tube at the water seal cover;
[0019] Figure 3 This is an exploded view of the water-sealed floor drain with an air-blocking mechanism described in this utility model;
[0020] Figure 4 This is a schematic diagram of the water seal cover after removing the jacking component when an airlock occurs;
[0021] Figure 5 This is a structural diagram of the piercing component.
[0022] Figure label:
[0023] 1 is the drain grate, 2 is the drain frame, 3 is the drain body, 4 is the water seal cover, 5 is the drain plug, 6 is the through hole, 7 is the drainage chamber, 8 is the siphon column, and 9 is the connecting ring. Detailed Implementation
[0024] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, this utility model will be further described in detail with reference to the embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit it. The technical solution of this utility model will be described in detail below with reference to the embodiments and accompanying drawings, but the scope of protection is not limited thereto.
[0025] See Figures 1 to 5 This embodiment proposes a water-sealed floor drain with an air-blocking mechanism, including a floor drain grate 1, a floor drain frame 2, a floor drain body 3, and a water seal cover 4. The floor drain frame 2 is connected to the top of the floor drain body 3; the floor drain grate 1 is snapped onto the upper part of the floor drain frame 2. A tubular drainage chamber 7 is provided inside the floor drain body 3; the water seal cover 4 opens downward and is fastened above the drainage chamber 7, forming a water seal between the floor drain body 3 and the drainage chamber 7; a cylindrical siphon column 8 is provided inside the water seal cover 4; the siphon column 8 has an open bottom and a hollow interior, and is located inside the drainage chamber 7 and coaxially arranged with the drainage chamber 7.
[0026] A through hole 6 is provided at the top center of the water seal cover 4, and the through hole 6 is located inside the siphon column 8; a detachable push-down component 5 is connected to the through hole 6; the push-down component 5 closes and seals the through hole 6.
[0027] Specifically, in this embodiment, the top of the through hole 6 is a circular structure; the lowering component 5 is a frustoconical block structure, with the top diameter of the lowering component 5 being larger than its bottom diameter. To ensure a more airtight fit with the lowering component 5, the inner wall of the through hole 6 is also a frustoconical structure. When the lowering component 5 is inserted into the through hole 6, the inner wall of the through hole 6 fits against the outer wall of the lowering component 5, thus sealing the through hole 6.
[0028] Furthermore, the top edge of the insert component 5 is provided with an overlapping ring 9; when the insert component 5 is inserted into the through hole 6, the overlapping ring 9 is located above the through hole 6 and covers the joint between the through hole 6 and the insert component 5 to improve the sealing effect.
[0029] The insert component 5 and the overlapping ring 9 are integrally formed and are both made of silicone or PP material, or other materials can be used. Silicone material with a certain degree of elasticity is preferred, as the silicone material can make the insert component 5 fit more closely and seal with the through hole 6 under the extrusion pressure of the inner wall of the through hole 6.
[0030] In this embodiment, the bottom of the piercing component 5 is an open structure, and the inside of the piercing component 5 is a hollow structure, making the piercing component 5 easier to remove.
[0031] The function of the jacking component 5 is to block the through hole 6, and when an air blockage occurs, the jacking component 5 can be removed by external force or other tools to open the through hole 6 and release the internal gas.
[0032] This embodiment presents the working principle of a water-sealed floor drain with an air-blocking mechanism as follows:
[0033] When the local drain pipe does not have a water trap structure, the push-down component 5 can be inserted into the through hole 6 at the top of the water seal cover 4. Alternatively, silicone sealant can be used to bond the push-down component 5 to the through hole 6 to form a sealing structure and achieve a sealing effect (e.g., Figure 2 Furthermore, since there is no water trap, there is no airlock. This water-sealed floor drain achieves the conventional water seal function. However, when the floor drain pipe has a water trap structure, a sealed air section is formed between the floor drain's own water seal and the water trap's water seal. When draining, the presence of this sealed air section prevents normal drainage. Lift the overlapping ring 9 by hand or with a tool, remove the jacking part 5 at the top of the water seal cover 4, open the through hole 6, and allow the floor drain to drain normally (e.g., Figure 4 Because the pipe has a water trap, the water in the trap also acts as a water seal, preventing gas from entering the room. When the drain pipe does not have a water trap, the unplugged part 5 can be reinstalled into the position of the top through hole 6 of the water seal cover 4 to restore the water seal odor prevention function.
[0034] The above description is a further detailed explanation of the present invention in conjunction with specific preferred embodiments. It should not be considered that the specific embodiments of the present invention are limited to this. For those skilled in the art, several simple deductions or substitutions can be made without departing from the present invention, and all such deductions or substitutions should be considered to fall within the scope of patent protection determined by the submitted claims.
Claims
1. A water-sealed floor drain with an air-blocking mechanism, comprising a floor drain body (3) and a water seal cover (4), wherein a tubular drainage chamber (7) is provided inside the floor drain body (3); the water seal cover (4) has an opening facing downwards and is fastened above the drainage chamber (7), forming a water seal between the floor drain body (3) and the drainage chamber (7); characterized in that, A siphon column (8) is provided inside the water seal cover (4); the siphon column (8) is located inside the drainage chamber (7); a through hole (6) is provided on the top of the water seal cover (4), and the through hole (6) is located inside the siphon column (8); a detachable shovel component (5) is connected to the through hole (6); the shovel component (5) closes and seals the through hole (6).
2. A water-sealed floor drain with an air-blocking mechanism according to claim 1, characterized in that, The piercing component (5) is a frustum-shaped block structure, and the top diameter of the piercing component (5) is larger than the bottom diameter.
3. A water-sealed floor drain with an air-blocking mechanism according to claim 2, characterized in that, The top edge of the piercing component (5) is provided with an overlapping ring (9); the overlapping ring (9) is located above the through hole (6) and covers the joint between the through hole (6) and the piercing component (5).
4. A water-sealed floor drain with an air-blocking mechanism according to claim 3, characterized in that, The piercing component (5) and the overlapping ring (9) are integrated and are both made of silicone or PP material.
5. A water-sealed floor drain with an air-blocking mechanism according to claim 4, characterized in that, The inner wall of the through hole (6) fits against the outer wall of the push-down component (5), and the push-down component (5) is inserted into the through hole (6) to seal the through hole (6).
6. A water-sealed floor drain with an air-blocking mechanism according to claim 5, characterized in that, The inner wall of the through hole (6) and the outer wall of the lower part (5) are bonded together with glass glue.
7. A water-sealed floor drain with an air-blocking mechanism according to claim 5, characterized in that, The bottom of the piercing component (5) is an open structure, and the inside of the piercing component (5) is a hollow structure.
8. A water-sealed floor drain with an air-blocking mechanism according to claim 1, characterized in that, The drain body (3) is connected to the top of the drain frame (2); the drain frame (2) is fitted with a drain grate (1) on the upper part.