Improved siphon for floor drain toilet

Abstract

The utility model discloses an improved siphon bend of floor drain closestool relates to the field of bathroom. It includes with the rising section of closestool bowl and the horizontal extension section of closestool sewage outlet are set up, be provided with the rising section and horizontal extension section between the falling section, and the falling section is the straight pipe structure, and the both ends of falling section are communicated with the rising section and horizontal extension section, and the communicating point of rising section and falling section is the siphon peak of siphon bend. The utility model has the beneficial effect that: the straight pipe type falling section of siphon bend makes the water flow to be gravity acceleration to promote the flow rate, forms the continuous water column in the falling section and produces the negative pressure, and the siphon effect is enhanced significantly, and the energy loss and noise caused by the collision of the bend are reduced.

Description

Technical Field

[0001] This utility model belongs to the field of sanitary ware, specifically the field of toilets, and specifically relates to an improved siphon bend for floor-mounted toilets. Background Technology

[0002] Toilets are a common type of sanitary ware, mainly divided into siphon toilets and direct-flush toilets. Siphon toilets have a complete siphon pipe designed inside, utilizing the siphon principle to achieve efficient waste removal. The working principle of a siphon toilet is: when water from the tank is flushed into the toilet bowl, the water flow quickly fills the bend, creating negative pressure at the top of the bend, thus generating a siphon effect that sucks away waste and flushes it into the sewer.

[0003] Traditional siphon toilets typically feature an inverted "S"-shaped siphon bend, consisting of two sections. The first section, the rising section connecting the toilet bowl, guides wastewater to the siphon peak. The second section, the descending section connecting the siphon peak and the drain outlet, discharges the wastewater. During flushing, as water flows through the siphon peak into the second section, the descending section experiences reduced flow velocity and insufficient negative pressure due to the bend design. This slows the flow, affecting the continuity and stability of the siphon effect, slowing down flushing, and potentially causing waste buildup and increasing the risk of blockages. Furthermore, the collision of water against the pipe walls generates significant noise, negatively impacting the user experience. Utility Model Content

[0004] This invention addresses the technical problem of existing siphon bends obstructing sewage discharge and affecting the siphon effect, by providing an improved siphon bend for floor-mounted toilets. The straight-pipe descending section of the siphon bend increases the water flow velocity due to gravity, creating a continuous water column and generating negative pressure within the descending section, significantly enhancing the siphon effect while reducing energy loss and noise caused by collisions in the bend.

[0005] The technical solution adopted by this utility model is: to provide an improved siphon bend for a floor-mounted toilet, including an ascending section connected to the toilet bowl and a horizontal extension section with a toilet drain outlet. A descending section is provided between the ascending section and the horizontal extension section. The descending section is a straight pipe structure, and its two ends are connected to the ascending section and the horizontal extension section respectively. The connection point between the ascending section and the descending section is the siphon peak of the siphon bend.

[0006] When not in use, the toilet bowl maintains a fixed water level in the reservoir, forming an initial water seal to prevent odors from rising. During flushing, water flows from the bowl into the rising section. Once the water level exceeds the siphon peak, the water flows into the straight-pipe descending section. In this section, the water is accelerated by gravity, creating a continuous water column that generates negative pressure. This pressure draws the sewage and waste from the reservoir into the siphon bend. The straight-pipe descending section reduces bends, water flow resistance, and collisions between the pipe and the wall, resulting in smoother water flow and flushing, reducing the risk of blockages, improving flushing efficiency, and lowering noise. The toilet then enters the horizontal extension section, where sewage and waste are discharged into the sewer through the drain outlet. After flushing, the water seal is restored in the reservoir. The straight-pipe structure of the descending section simplifies the toilet's design and reduces manufacturing costs.

[0007] To further optimize this technical solution, the rising section is provided with an inlet and an outlet along the water flow direction. The pipe diameter of the rising section gradually narrows along the water flow direction, and the pipe diameter of the inlet of the rising section is 45.5-78 mm, while the pipe diameter of the outlet is 35-67.5 mm.

[0008] The tapering design of the rising section pipe can accelerate water flow, enhance siphon negative pressure, thereby improving siphon drainage efficiency, speeding up the discharge of sewage, and reducing water flow turbulence, allowing sewage to enter the falling section more smoothly, avoiding stagnation or backflow, and increasing the flushing force of the water flow to help push solid waste and reduce the probability of pipe blockage.

[0009] To further optimize this technical solution, the length of the rising segment is 107-396.2 mm.

[0010] The siphon effect is ensured by controlling the length of the rising section between 107-396.2 mm.

[0011] To further optimize this technical solution, the angle α between the rising segment and the horizontal plane is 31.5°-47.25°.

[0012] To further optimize this technical solution, the included angle β between the rising segment and the falling segment is 33.5°-49.25°.

[0013] To further optimize this technical solution, the diameter of the descending section is 37.5-65 mm.

[0014] After the water flows through the outlet of the rising section into the descending section, the pipe diameter of the descending section changes little from that of the outlet, reducing water flow resistance and collision between the water pipe and the pipe wall. This makes the water flow and sewage discharge more stable, reduces the risk of blockage, improves sewage discharge efficiency, and reduces noise during use.

[0015] To further optimize this technical solution, the height h1 of the descent segment is 24-234 mm.

[0016] The siphon effect is enhanced by controlling the height of the descent segment to 24-234 mm.

[0017] To further optimize this technical solution, the diameter of the horizontal extension section is 35-62.5 mm.

[0018] To further optimize this technical solution, the length of the horizontal extension segment is 172.2-335 mm.

[0019] To further optimize this technical solution, the descending segment and the horizontal extension segment are connected by a connecting bend.

[0020] The connecting bend optimizes the water flow path, allowing water to flow smoothly from the descending section into the horizontal extension section. This reduces frictional resistance and collision energy loss between the water flow and the pipe wall, and prevents turbulence or resistance caused by water flow turning. This enhances the stability of the siphon effect, enabling the water flow to maintain a high velocity and kinetic energy in the connecting bend and horizontal extension section, strengthening the siphon effect and ensuring the rapid and thorough discharge of contaminants.

[0021] The beneficial effects of this utility model are as follows:

[0022] 1. During sewage discharge, water flows from the siphon peak into the descending section. The descending section has a straight pipe structure. After it extends downward and connects with the horizontal extension section, the descending section accelerates the water flow under the action of gravity, forming a stronger negative pressure zone and enhancing the siphon effect. In addition, the straight pipe structure of the descending section reduces bends, reduces the frictional resistance between the water flow and the pipe wall and the loss of collision energy, making the water flow and sewage discharge more stable, reducing the risk of blockage, improving sewage discharge efficiency, reducing noise, and simplifying the toilet structure, reducing manufacturing and maintenance costs.

[0023] 2. The pipe diameter of the rising section gradually narrows along the direction of water flow, which can accelerate the water flow, enhance the siphon negative pressure and optimize the flow direction, improve drainage efficiency, reduce turbulent stagnation, and enhance flushing force to reduce the risk of blockage.

[0024] 3. The connecting bend between the descending section and the horizontal extension section optimizes the water flow path, allowing the water to flow smoothly into the horizontal extension section, reducing the collision between the water flow and the pipe wall, reducing the energy loss of the water flow, avoiding turbulence or resistance caused by the water flow turning, enhancing the stability of the siphon effect, and maintaining a high flow velocity and kinetic energy in the connecting bend and the horizontal extension section, strengthening the siphon effect, and ensuring the rapid and thorough discharge of dirt. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the improved siphon bend of the floor-mounted toilet in this embodiment;

[0026] Figure 2This is a schematic diagram of the planar structure of the improved siphon bend of the floor-mounted toilet in this embodiment.

[0027] In the diagram, 1 is the toilet bowl; 2 is the rising section; 201 is the inlet; 202 is the outlet; 3 is the falling section; 4 is the siphon peak; 5 is the drain outlet; 6 is the connecting bend; 7 is the horizontal extension section; α is the angle between the rising section and the horizontal plane; β is the angle between the rising section and the falling section; h1 is the height of the falling section. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0029] Please see the appendix Figure 1 Appendix Figure 2 The improved siphon bend of the floor-mounted toilet includes an ascending section 2 connected to the toilet bowl 1 and a horizontal extension section 7 equipped with a toilet drain outlet 5. The ascending section 2 has an inlet 201 and an outlet 202 along the water flow direction. The diameter of the ascending section 2 gradually decreases along the water flow direction. During flushing, according to Bernoulli's principle, the gradually decreasing diameter design of the ascending section 2 accelerates the water flow, enhances the siphon negative pressure, thereby improving siphon drainage efficiency, speeding up waste discharge, and reducing water turbulence. Wastewater flows more smoothly into the descending section 3, avoiding stagnation or backflow, and can increase the flushing force of the water flow to help push solid waste and reduce the probability of pipe blockage. According to the test, the pipe diameter of the inlet 201 of the ascending section 2 is 45.5-78 mm, the pipe diameter of the outlet 202 is 35-67.5 mm, the angle α between the ascending section 2 and the horizontal plane is 31.5°-47.25°, and the length of the ascending section 2 is controlled at 107-396.2 mm to ensure the sewage discharge effect.

[0030] A descending section 3 is provided between the rising section 2 and the horizontal extension section 7, with both ends of the descending section 3 connected to the rising section 2 and the horizontal extension section 7 respectively. The connection point between the rising section 2 and the descending section 3 is the siphon peak 4 of the siphon bend. The water seal reference water level is set according to the standard, ensuring that the siphon peak 4 is higher than the water seal reference water level, thus forming a water seal in the water storage pit. This prevents odor backflow and ensures the siphon drainage effect. After flowing through the siphon peak 4, the water enters the descending section 3. The descending section 3 is a straight pipe structure with a diameter of 37.5-65 mm. The angle β between the descending section 3 and the rising section 2 is controlled between 33.5° and 49.25°, and the height h1 is controlled between 24-234 mm. The downward extension of section 3 connects with the horizontal extension section 7, which has a diameter of 35-62.5 mm. This allows the water flow to accelerate under gravity, creating a stronger negative pressure zone and enhancing the siphon effect. Furthermore, the diameter of the descending section 3 changes little with the diameter of the outlet 202 of the ascending section 2 and the horizontal extension section 7. This reduces water flow resistance and collisions between the water pipe and the pipe wall after the water enters the descending section 3, resulting in smoother water flow and sewage discharge. This reduces the risk of blockage, improves sewage discharge efficiency, and lowers noise levels. Tests have shown that the straight pipe design of the descending section 3 reduces sewage discharge noise by 2-3 decibels. Moreover, the straight pipe design of the descending section 3 simplifies the toilet structure and reduces manufacturing costs.

[0031] The descending section 3 is connected to the horizontal extension section 7 via the connecting bend 6. The connecting bend 6 optimizes the water flow path, allowing the water to flow smoothly from the descending section 3 of the siphon bend into the horizontal extension section 7, reducing water flow collisions with the pipe and thus reducing energy loss. It also prevents turbulence or resistance caused by water flow turning, thereby enhancing the stability of the siphon effect. This allows the water to maintain a high flow velocity and kinetic energy in the connecting bend 6 and the horizontal extension section 7, strengthening the siphon effect and ensuring the rapid and thorough discharge of waste. The horizontal extension section 7 prevents air backflow from interrupting the water column continuity and causing premature siphon interruption, thus ensuring the siphon effect. Furthermore, the drain outlet 5 is located on the horizontal extension section 7, and the length of the horizontal extension section 7 is controlled between 172.2-335 mm to ensure a balance between the siphon effect and the sewage discharge effect.

[0032] Tests showed that the inlet 201 of the rising section 2 has a diameter of 51.5 mm, the outlet 202 has a diameter of 41 mm, the angle α between the rising section and the horizontal plane is 36.5°, and the length is 204.8 mm. The angle β between the falling section 3 and the rising section 2 is 36.5°, the height h1 of the falling section 3 is 30 mm, and the diameter is 41 mm. The length of the horizontal extension section 7 is 178.2 mm, and the diameter is 36.5 mm. The measured flow velocity Vb is 0.91 m / s, while the measured flow velocity Va of a conventional toilet siphon bend is 0.82 m / s. According to Bernoulli's equation ΔP=0.5ρ(Va²−Vb²), the negative pressure generated by the siphon bend of this application is calculated to be -77.85 Pa, which is significantly enhanced compared to the negative pressure of a conventional toilet siphon bend.

[0033] The improved siphon bend of this toilet works as follows: During sewage discharge, water flows upward through the rising section 2 of the siphon bend. The diameter of the rising section 2 is constricted along the direction of water flow, which accelerates the water flow, enhances the siphon negative pressure, optimizes the flow direction, improves drainage efficiency, reduces turbulence and stagnation, and enhances flushing force to reduce the risk of blockage. When the water level exceeds the siphon peak 4 of the siphon bend, the water flows from the siphon peak 4 into the descending section 3 of the straight pipe structure, flows through the connecting bend 6, enters the horizontal extension section 7, and is discharged into the sewer from the drain outlet 5. The downward extension of the descending section 3 accelerates the water flow within it under the action of gravity, forming a negative pressure zone and enhancing the siphon effect, thereby quickly discharging sewage and waste from the toilet bowl 1 into the sewer. The diameter of the descending section 3 is consistent with the diameter of the outlet 202 of the ascending section 2 and the diameter of the horizontal extension section 7, which reduces water flow resistance and the collision between the water pipe and the pipe wall, making the water flow and sewage discharge more stable, reducing the risk of blockage, improving sewage discharge efficiency, and reducing noise. In addition, the straight pipe structure of the descending section 3 simplifies the toilet structure and reduces manufacturing costs.

Claims

1. An improved siphon bend for a floor-mounted toilet, comprising an ascending section (2) connected to the toilet bowl (1) and a horizontally extending section (7) provided with a toilet drain outlet (5), characterized in that: A descending section (3) is provided between the ascending section (2) and the horizontal extension section (7). The descending section (3) is a straight pipe structure, and the connection point between the ascending section (2) and the descending section (3) is the siphon peak (4) of the siphon bend.

2. The improved siphon bend of the floor-mounted toilet according to claim 1, characterized in that: The rising section (2) is provided with an inlet (201) and an outlet (202) along the water flow direction. The pipe diameter of the rising section (2) gradually narrows along the water flow direction, and the pipe diameter of the inlet (201) of the rising section (2) is 45.5-78 mm, and the pipe diameter of the outlet (202) is 35-67.5 mm.

3. The improved siphon bend of the floor-mounted toilet according to claim 2, characterized in that: The length of the rising segment (2) is 107-396.2 mm.

4. The improved siphon bend of the floor-mounted toilet according to claim 2, characterized in that: The angle (α) between the rising segment (2) and the horizontal plane is 31.5°-47.25°.

5. The improved siphon bend of the floor-mounted toilet according to claim 2, characterized in that: The angle (β) between the ascending segment (2) and the descending segment (3) is 33.5°-49.25°.

6. The improved siphon bend of the floor-mounted toilet according to claim 5, characterized in that: The diameter of the descending section (3) is 37.5-65 mm.

7. The improved siphon bend of the floor-mounted toilet according to claim 6, characterized in that: The height (h1) of the descending segment (3) is 24-234 mm.

8. The improved siphon bend of the floor-mounted toilet according to claim 1, characterized in that: The diameter of the horizontal extension section (7) is 35-62.5 mm.

9. The improved siphon bend of the floor-mounted toilet according to claim 8, characterized in that: The length of the horizontal extension segment (7) is 172.2-335 mm.

10. The improved siphon bend of the floor-mounted toilet according to claim 1, characterized in that: The descending segment (3) and the horizontal extension segment (7) are connected by a connecting bend (6).

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