Water seal floor drain with double-siphon structure
By designing a floor drain with a double siphon structure, utilizing a unique double-step siphon column and a conical drainage chamber, the problem of limited flow in a single siphon structure is solved, achieving a highly efficient large-flow drainage effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 宋少萍
- Filing Date
- 2025-05-23
- Publication Date
- 2026-04-28
AI Technical Summary
When existing floor drains use a single siphon structure, the flow rate is limited, resulting in poor drainage under high flow conditions and failing to achieve the expected drainage volume.
Design a floor drain with a double siphon structure, including a unique double-step siphon column and a drainage chamber, to form a double siphon effect. Combine the conical structure and hollow siphon column to increase the difference in the inner diameter of the drainage chamber to promote the siphon effect.
It significantly increases the drainage flow rate of the floor drain, reaching a drainage capacity of over 30L, and is compatible with 40-50mm drain pipes, thus improving drainage capacity and practicality.
Smart Images
Figure CN224173468U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of drainage facilities technology, specifically a water-sealed floor drain with a double siphon structure. 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] In traditional technology, floor drains utilize the additional suction force of a siphon to achieve clean and efficient drainage. The principle of a siphon floor drain is based on the siphon phenomenon. Specifically, a siphon floor drain uses the pressure difference of the water column to make water flow from a higher position to a lower position, thus achieving the drainage function. Although the atmospheric pressure on both sides is equal, the water level at the inlet is higher, resulting in greater pressure and propelling the water continuously out of the outlet. The liquid automatically flows from the higher liquid level through a section of pipe that is higher than the liquid level to the lower liquid level.
[0004] However, existing floor drains using a single siphon structure have a flow limitation problem. The floor drain cannot achieve the expected drainage flow, resulting in poor drainage and limited drainage volume when there is a large flow of water. Utility Model Content
[0005] This invention overcomes the shortcomings of the prior art and proposes a water-sealed floor drain with a double siphon structure; it solves the problem of limited drainage volume when the floor drain is connected to a drain pipe of the same diameter.
[0006] To achieve the above objectives, this utility model is implemented through the following technical solution:
[0007] A water-sealed floor drain with a double siphon structure includes a drain body and a water seal cover. The drain body contains a tubular drainage chamber. The water seal cover, opening downwards, is fitted onto the drainage chamber, forming a water seal between the drain body and the water seal cover, and between the water seal cover and the drainage chamber. A first step and a second step are arranged circumferentially on the inner wall of the drainage chamber. The second step is located at the bottom of the drainage chamber, and the first step is located above the second step. A cylindrical siphon column is arranged inside the water seal cover, located inside the drainage chamber. A concave platform structure is arranged on the outer wall of the siphon column, located above the first step and inside the drainage chamber. The concave platform structure divides the siphon column into an upper short column and a lower long column, with the length of the upper short column being less than the length of the lower long column. The space enclosed by the siphon column and the drainage chamber below the top of the water seal cover and above the first step forms a first siphon space. The space enclosed by the long column below the first step and above the second step and the drainage chamber forms a second siphon space.
[0008] Furthermore, the drainage chamber has a conical structure, with the inner diameter at the top of the drainage chamber being larger than the inner diameter at the bottom of the drainage chamber.
[0009] Furthermore, the siphon column is a hollow structure, and the bottom of the siphon column is an open structure; and the siphon column and the drainage chamber are coaxially arranged.
[0010] Furthermore, the inner diameter of the siphon column gradually increases from top to bottom, while the outer diameter of the siphon column gradually decreases from top to bottom.
[0011] Furthermore, a boss structure is connected to the outer wall of the drainage cavity; the bottom of the boss structure is connected to the bottom of the drain body, and the top of the boss structure is flush with the first step.
[0012] 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.
[0013] Furthermore, the height between the concave platform structure and the first step is 10-20mm; the height between the bottom of the siphon column and the second step is 10-20mm.
[0014] The beneficial effects of this utility model compared to the prior art are as follows:
[0015] The water-sealed floor drain of this invention features a unique double-step structure, creating a double siphon effect that effectively increases the flow rate and significantly improves drainage capacity. Compared to existing siphon floor drains with a drainage capacity of over 25L, the water-sealed floor drain of this invention can achieve a drainage capacity of over 30L. Therefore, the water-sealed floor drain of this invention is compatible with drain pipes with an outer diameter of 40-50mm, making it more practical. Attached Figure Description
[0016] Figure 1 This is a cross-sectional view of a water seal floor drain with a double siphon structure as described in this utility model;
[0017] Figure label:
[0018] 1 is the drain grate, 2 is the drain frame, 3 is the drain body, 4 is the water seal cover, 5 is the first step, 6 is the second step, 7 is the drainage chamber, 8 is the siphon column, 9 is the concave platform structure, and 10 is the convex platform structure. Detailed Implementation
[0019] 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.
[0020] See Figure 1 This embodiment proposes a water-sealed floor drain with a double siphon structure, including a drain grate 1, a drain frame 2, a drain body 3, and a water seal cover 4; the drain frame 2 is connected to the top of the drain body 3; the drain grate 1 is snapped onto the upper part of the drain frame 2. A tubular drainage chamber 7 is provided inside the drain body 3; the water seal cover 4 opens downwards and is fastened above the drainage chamber 7, forming a water seal between the drain body 3 and the water seal cover 4, and between the water seal cover 4 and the drainage chamber 7.
[0021] In this embodiment, the drainage chamber 7 has a conical structure, and the inner diameter of the top of the drainage chamber 7 is larger than the inner diameter of the bottom of the drainage chamber 7. This structure can increase the overall water inflow of the floor drain. A first step 5 and a second step 6 are arranged circumferentially on the inner wall of the drainage chamber 7. The second step 6 is located at the bottom of the drainage chamber 7. The first step 5 is located above the second step 6.
[0022] A cylindrical siphon column 8 is provided inside the water seal cover 4; the siphon column 8 is a hollow structure, and the bottom of the siphon column 8 is an open structure; the siphon column 8 is located inside the drainage chamber 7 and is coaxially arranged with the drainage chamber 7. A concave platform structure 9 is provided on the outer wall of the siphon column 8; the concave platform structure 9 is located above the first step 5 and inside the drainage chamber 7; the concave platform structure 9 divides the siphon column 8 into an upper short column and a lower long column, the length of the short column is less than the length of the long column; the height between the concave platform structure 9 and the first step 5 is 14mm; the height between the bottom of the siphon column 8 and the second step 6 is 14mm.
[0023] The space enclosed by the siphon column 8 and the drainage chamber 7 below the top of the inner side of the water seal cover 4 and above the first step 5 forms the first siphon space; the space enclosed by the long column below the first step 5 and above the second step 6 and the drainage chamber 7 forms the second siphon space.
[0024] When the water inflow increases, because the inner diameter of the bottom of the drain chamber 7 narrows relative to its top, the water in the drain flows along... Figure 1 When water enters the drain chamber 7 of the floor drain from the direction of the blue line, the water inlet area expands above the first step 5. The first step 5 blocks part of the water flow, causing the upper half of the drain chamber 7 to quickly fill with water. A first siphon is formed in the space enclosed by the siphon column 8 below the top of the inner side of the water seal cover 4 and above the first step 5, and the drain chamber 7, increasing the downward drainage volume. When the water flow reaches its maximum point and the water level reaches its maximum value, the space enclosed by the long column below the first step 5 and above the second step 6 and the drain chamber 7 gradually narrows, triggering a second siphon. When the entire floor drain is filled with water and a double siphon is formed, the increased water flow at the inlet can be quickly discharged, thus greatly increasing the drain's drainage capacity.
[0025] The siphon column 8 is located inside the drainage chamber 7 and can form a drainage space between itself and the inner wall of the drainage chamber 7 to guide the water flow out. When the water flow into the drainage chamber 7 increases, the inner cavity of the siphon column 8 forms a buffer space to prevent the drainage from overflowing.
[0026] The inner diameter of the siphon column 8 gradually increases from top to bottom, while the outer diameter of the siphon column 8 gradually decreases from top to bottom. This structure further promotes the siphon effect formed at the first step 5, resulting in a more effective blocking and water storage effect at the first step 5.
[0027] A boss structure 10 is connected to the outer wall of the drainage chamber 7; the bottom of the boss structure 10 is connected to the bottom of the drain body 3, and the top of the boss structure 10 is flush with the first step 5. When drainage enters the channel between the inner wall of the drain body 3 and the outer wall of the water seal 4, it is first blocked and buffered by the boss structure 10, which helps to form a high water level at the boss structure 10 and in the channel between the inner wall of the water seal 4 and the outer wall of the drainage chamber 7, thereby promoting the rapid formation of the first siphon and accelerating the drainage speed of large flow.
[0028] The water-sealed floor drain described in this embodiment features a unique double-step structure, creating a double siphon effect that effectively increases the flow rate and significantly improves drainage capacity. Furthermore, the combination of the siphon column 8, the concave platform structure 9, and the convex platform structure 10 further enhances the drainage effect of the double siphon. Compared to existing siphon floor drains with a drainage capacity of 25L (corresponding to a 40mm pipe) or more, the water-sealed floor drain described in this embodiment can achieve a drainage capacity of over 30L. Therefore, the water-sealed floor drain described in this embodiment is compatible with drainage pipes with an outer diameter of 40-50mm, making it more practical.
[0029] 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 a double siphon structure, 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 downward and is fastened above the drainage chamber (7), forming a water seal between the floor drain body (3) and the water seal cover (4), and between the water seal cover (4) and the drainage chamber (7); characterized in that, A first step (5) and a second step (6) are arranged circumferentially on the inner wall of the drainage cavity (7); the second step (6) is located at the bottom of the drainage cavity (7); the first step (5) is located above the second step (6); a cylindrical siphon column (8) is arranged on the inner side of the water seal cover (4); the siphon column (8) is located on the inner side of the drainage cavity (7); a concave platform structure (9) is arranged on the outer wall of the siphon column (8); the concave platform structure (9) is located above the first step (5) and on the inner side of the drainage cavity (7); the concave platform structure (9) divides the siphon column (8) into an upper short column and a lower long column, the length of the upper short column is less than the length of the lower long column; the space enclosed by the siphon column (8) below the top of the inner side of the water seal cover (4) and above the first step (5) and the drainage cavity (7) forms the first siphon space; the space enclosed by the long column below the first step (5) and above the second step (6) and the drainage cavity (7) forms the second siphon space.
2. A water-sealed floor drain with a double siphon structure according to claim 1, characterized in that, The drainage cavity (7) has a conical structure, and the inner diameter of the top of the drainage cavity (7) is larger than the inner diameter of the bottom of the drainage cavity (7).
3. A water-sealed floor drain with a double siphon structure according to claim 1, characterized in that, The siphon column (8) is a hollow structure, and the bottom of the siphon column (8) is an open structure; and the siphon column (8) and the drainage chamber (7) are coaxially arranged.
4. A water-sealed floor drain with a double siphon structure according to claim 1, characterized in that, The inner diameter of the siphon column (8) gradually increases from top to bottom, and the outer diameter of the siphon column (8) gradually decreases from top to bottom.
5. A water-sealed floor drain with a double siphon structure according to claim 1, characterized in that, A boss structure (10) is connected to the outer wall of the drainage cavity (7); the bottom of the boss structure (10) is connected to the bottom of the drain body (3), and the top of the boss structure (10) is flush with the first step (5).
6. A water-sealed floor drain with a double siphon structure according to claim 1, characterized in that, The top of the drain body (3) is connected to the drain frame (2); the drain frame (2) is fitted with a drain grate (1) on the upper part.
7. A water-sealed floor drain with a double siphon structure according to claim 1, characterized in that, The height between the concave platform structure (9) and the first step (5) is 10-20mm; the height between the bottom of the siphon column (8) and the second step (6) is 10-20mm.