Water seal floor drain with double-siphon structure

Abstract

The invention discloses a water seal floor drain with a double-siphon structure, and relates to the technical field of drainage facilities. Comprising a floor drain body and a water seal cover, and a tubular drainage cavity is formed in the floor drain body; the opening of the water seal cover is downward, the water seal cover is buckled above the drainage cavity, and a water seal is formed between the floor drain body and the drainage cavity; a circle of first step and a circle of second step are arranged on the inner wall of the drainage cavity in the circumferential direction; the second step is located at the bottom of the drainage cavity; the first step is located above the second step, and a cylindrical siphon column is arranged on the inner side of the water seal cover; a circle of concave platform structure is arranged on the outer wall of the siphon column; the concave platform structure is positioned above the first step; the problem that when a floor drain is connected with a drain pipe with a large pipe diameter, the water discharge amount is limited is solved; and compatibility with a drainage pipe with the outer diameter of 40-50 mm can be achieved, and practicability is higher.

Description

Technical Field

[0001] The present invention relates to the technical field of drainage facilities, and particularly to a water seal floor drain with a double siphon structure. Background Art

[0002] A floor drain is a frequently used bathroom product. It is an important interface connecting the drainage pipe system and the indoor ground. As an important component of the drainage system in a residence, its performance directly affects the quality of indoor air and is very important for controlling the odor in the bathroom.

[0003] In traditional technologies, the additional suction force in the form of siphon is utilized in the floor drain to achieve a clean and efficient drainage function. The principle of the siphon floor drain is based on the siphon phenomenon. Specifically, the siphon floor drain utilizes the pressure difference of the water column to make the water flow from a high place to a low place to achieve the drainage function. Although the atmospheric pressures on both sides are equal, the water level at the incoming water end is high and the pressure is large, which pushes the water to continuously flow out of the outlet. The liquid will automatically flow from a higher liquid level through a pipe section higher than the liquid level to a lower liquid level.

[0004] However, when the existing floor drain uses a single siphon structure, there is a problem of limited flow rate. The floor drain cannot achieve the expected drainage flow rate, resulting in poor drainage and limited drainage volume when there is a large flow of drainage. Summary of the Invention

[0005] The present invention overcomes the deficiencies of the prior art and provides a water seal floor drain with a double siphon structure, which solves the problem of limited drainage volume when the floor drain is connected to a drain pipe with the same pipe diameter.

[0006] To achieve the above object, the present invention is realized by the following technical solutions: A water seal floor drain with a double siphon structure includes a floor drain body and a water seal cover. A tubular drainage cavity is provided inside the floor drain body. The water seal cover has an opening facing downwards and is buckled above the drainage cavity, forming a water seal between the floor drain body and the water seal cover, as well as between the water seal cover and the drainage cavity. A first step and a second step are circumferentially arranged along the inner wall of the drainage cavity. The second step is located at the bottom end of the drainage cavity. The first step is located above the second step. A cylindrical siphon column is provided inside the water seal cover. The siphon column is located inside the drainage cavity. A concave structure is provided on the outer wall of the siphon column. The concave structure is located above the first step and inside the drainage cavity. The concave structure divides the siphon column into a short column in the upper section and a long column in the lower section, and the length of the short column in the upper section is less than the length of the long column in the lower section. The space formed between the siphon column and the drainage cavity below the top inside the water seal cover and above the first step forms a first siphon space. The space formed between the long column and the drainage cavity below the first step and above the second step forms a second siphon space.

[0007] Further, the drainage cavity is in a conical structure, and the inner diameter of the top end of the drainage cavity is larger than that of the bottom end of the drainage cavity.

[0008] Further, the siphon column is in a hollow structure, and the bottom of the siphon column is in an open structure; and the siphon column is coaxially arranged with the drainage cavity.

[0009] Further, the inner diameter of the siphon column gradually increases from top to bottom, and the outer diameter of the siphon column gradually decreases from top to bottom.

[0010] Further, 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 floor drain body, and the top of the boss structure is flush with the first step.

[0011] Further, a floor drain frame is connected to the top of the floor drain body; a floor drain grate is clamped to the upper part of the floor drain frame.

[0012] Further, the height between the concave structure and the first step is 10 - 20 mm; the height between the bottom of the siphon column and the second step is 10 - 20 mm.

[0013] The beneficial effects of the present invention compared with the prior art are as follows: The water seal floor drain described in the present invention has a unique double-step structure, which forms the function of double siphon, effectively increases the flow rate of the water seal floor drain, and greatly improves the drainage capacity of the floor drain. Compared with the existing siphon floor drain with a drainage volume of more than 25 L, the water seal floor drain described in the present invention can reach a drainage volume of more than 30 L; therefore, the water seal floor drain described in the present invention can be compatible with a drain pipe with an outer diameter of 40 - 50 mm, and has stronger practicability. Description of the Drawings

[0014] Figure 1 is a cross-sectional view of the water seal floor drain with a double-siphon structure described in the present invention; Reference Signs: 1 is the floor drain grate, 2 is the floor drain frame, 3 is the floor drain body, 4 is the water seal cover, 5 is the first step, 6 is the second step, 7 is the drainage cavity, 8 is the siphon column, 9 is the concave structure, and 10 is the boss structure. Detailed Embodiments

[0015] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clear and understandable, the present invention will be further described in detail in combination with the embodiments and the drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. The technical solutions of the present invention will be described in detail below in combination with the embodiments and the drawings, but the protection scope is not limited by this.

[0016] See Figure 1, in this embodiment, a water seal floor drain with a double siphon structure is proposed, 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 body 3 is connected to the floor drain frame 2 at the top; the floor drain grate 1 is clamped on the upper part of the floor drain frame 2. A tubular drainage cavity 7 is arranged in the floor drain body 3; the water seal cover 4 has an opening facing downwards and is buckled above the drainage cavity 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 cavity 7.

[0017] In this embodiment, the drainage cavity 7 is a conical structure, and the inner diameter of the top end of the drainage cavity 7 is larger than the inner diameter of the bottom end of the drainage cavity 7; this structure can increase the overall water intake of the floor drain; a first step 5 and a second step 6 are arranged in a circumferential direction along the inner wall of the drainage cavity 7; the second step 6 is located at the bottom end of the drainage cavity 7; the first step 5 is located above the second step 6.

[0018] A cylindrical siphon column 8 is arranged on the inner side of 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 cavity 7 and is coaxially arranged with 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 inside the drainage cavity 7; the concave platform structure 9 divides the siphon column 8 into a short column in the upper section and a long column in the lower section, and 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 14 mm; the height between the bottom of the siphon column 8 and the second step 6 is 14 mm.

[0019] The space formed by the siphon column 8 and the drainage cavity 7 between the inner top of the water seal cover 4 and above the first step 5 forms a first siphon space; the space formed by the long column between the first step 5 and above the second step 6 and the drainage cavity 7 forms a second siphon space.

[0020] When the water intake increases, due to the narrowing of the inner diameter of the bottom end of the drainage cavity 7 relative to its top end, when the water in the floor drain enters the drainage cavity 7 of the floor drain along the Figure 1 blue line direction in the figure; in the part above the first step 5, the water intake area expands, and the first step 5 blocks part of the water flow, so that the upper half of the drainage cavity 7 is quickly filled with water; a first siphon is formed in the space formed by the siphon column 8 and the drainage cavity 7 between the inner top of the water seal cover 4 and above the first step 5; increasing the downward drainage volume. When the water flow reaches the maximum point and the water level height reaches the maximum value, due to the gradual narrowing of the space structure formed by the long column between the first step 5 and above the second step 6 and the drainage cavity 7, a second siphon is triggered; when the entire floor drain is filled with water to form a double siphon, the increased water flow rate at the water inlet can be quickly discharged, so the drainage capacity of the floor drain is greatly increased.

[0021] The siphon column 8 is located inside the drainage cavity 7 and can form a drainage space with the inner wall of the drainage cavity 7 to guide the water flow out. When the water flow entering the drainage cavity 7 increases, a buffer space is formed inside the siphon column 8, preventing drainage overflow.

[0022] 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. This structure further promotes the siphon effect formed at the first step 5, resulting in a more sufficient blocking and water storage effect at the first step 5.

[0023] 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 floor drain body 3, and the top of the boss structure 10 is flush with the first step 5. When the drainage passes through the channel between the inner wall of the floor drain body 3 and the outer wall of the water seal cover 4 and enters the channel between the inner wall of the water seal cover 4 and the outer wall of the drainage cavity 7, it will first be blocked and buffered by the boss structure 10, which is beneficial to forming a high water level at the boss structure 10 and in the channel between the inner wall of the water seal cover 4 and the outer wall of the drainage cavity 7, thus promoting the rapid formation of the first siphon and facilitating the acceleration of the drainage speed for large water flows.

[0024] The water seal floor drain described in this embodiment has a unique double-step structure, which forms the function of two siphons, effectively increasing the flow rate of the water seal floor drain and greatly improving the drainage capacity of the floor drain. By combining the structures of the siphon column 8, the concave structure 9, and the boss structure 10, the drainage effect of the double siphon is further enhanced. Compared with the existing siphon floor drain with a drainage volume of more than 25L (corresponding to a 40mm pipe), the water seal floor drain described in this embodiment can achieve a drainage volume of more than 30L. Therefore, the water seal floor drain described in the embodiment can be compatible with drain pipes with an outer diameter of 40 - 50mm, with stronger practicability.

[0025] The above content is a further detailed description of the present invention in combination with specific preferred embodiments. It cannot be determined that the specific embodiments of the present invention are limited to this. For those of ordinary skill in the technical field to which the present invention belongs, without departing from the premise of the present invention, several simple deductions or substitutions can still be made, and all should be regarded as falling within the patent protection scope determined by the claims submitted for the present invention.

Claims

1. A water seal floor drain with a double siphon structure, comprising a floor drain body (3) and a water seal cover (4). A tubular drainage cavity (7) is arranged inside the floor drain body (3); the water seal cover (4) has an opening facing downward and is buckled above the drainage cavity (7), and a water seal is formed between the floor drain body (3) and the water seal cover (4), as well as between the water seal cover (4) and the drainage cavity (7); characterized in that, A first step (5) and a second step (6) are circumferentially arranged on the inner wall of the drainage cavity (7); the second step (6) is located at the bottom end of the drainage cavity (7); the first step (5) is located above the second step (6); a cylindrical siphon column (8) is arranged inside the water seal cover (4); the siphon column (8) is located inside the drainage cavity (7); a concave structure (9) is arranged on the outer wall of the siphon column (8); the concave structure (9) is located above the first step (5) and inside the drainage cavity (7); the concave structure (9) divides the siphon column (8) into a short column in the upper section and a long column in the lower section, and the length of the short column in the upper section is less than the length of the long column in the lower section; the space formed by the siphon column (8) and the drainage cavity (7) below the top inside the water seal cover (4) and above the first step (5) forms a first siphon space; the space formed by the long column below the first step (5) and above the second step (6) and the drainage cavity (7) forms a second siphon space.

2. The water seal floor drain with a double siphon structure according to claim 1, characterized in that, The drainage cavity (7) is a conical structure, and the inner diameter of the top end of the drainage cavity (7) is larger than the inner diameter of the bottom end of the drainage cavity (7).

3. The water seal 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) is coaxially arranged with the drainage cavity (7).

4. The water seal 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. The water seal floor drain with a double siphon structure according to claim 1, characterized in that, A convex structure (10) is connected to the outer wall of the drainage cavity (7); the bottom of the convex structure (10) is connected to the bottom of the floor drain body (3), and the top of the convex structure (10) is flush with the first step (5).

6. The water seal floor drain with a double siphon structure according to claim 1, characterized in that, The top of the floor drain body (3) is connected to a floor drain frame (2); a floor drain grate (1) is clamped on the upper part of the floor drain frame (2).

7. The water seal floor drain with a double siphon structure according to claim 1, characterized in that, The height between the concave structure (9) and the first step (5) is 10 - 20 mm; the height between the bottom of the siphon column (8) and the second step (6) is 10 - 20 mm.

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