Anti-siphon mounting structure for water inlet pipe of pool

By bending the inlet and overflow pipes upwards inside the water tank, and combining them with components such as a level gauge, the problems of siphon backflow and bottom plate scouring are solved, achieving stable water supply and convenient maintenance for the water tank, and improving the operating efficiency and safety of the water tank.

CN223824268UActive Publication Date: 2026-01-23NORTHWEST ENGINEERING CORPORATION LIMITED
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Patent Information

Application Number
CN202520254696.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-02-18
Publication Date
2026-01-23
Estimated Expiration
2035-02-18

AI Technical Summary

Technical Problem

Traditional water tank inlet pipe installation structures are prone to siphoning, causing water backflow, resulting in water waste and pollution of the water supply system. Furthermore, long-term scouring of the tank bottom plate affects the tank's lifespan and operational efficiency.

Method used

The design incorporates an inlet pipe and an overflow pipe that bend upwards within the water tank. Combined with components such as a level gauge, ventilation pipe, sump, and steel ladder, this forms an anti-siphon installation structure that ensures stable unidirectional water flow, monitors water levels, and facilitates maintenance.

Benefits of technology

It prevents siphon backflow, reduces bottom slab erosion, improves water supply efficiency and pool stability, and reduces maintenance difficulty and cost, making it suitable for irrigation and water supply projects.

✦ Generated by Eureka AI based on patent content.

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    Figure CN223824268U_ABST
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Abstract

The utility model relates to the technical field of pool water supply and drainage systems, in particular to an anti-siphon installation structure of a pool water inlet pipe. The device comprises a water inlet pipe and an overflow pipe which are arranged on the pool wall of a pool, the pool water inlet pipe penetrates through the pool wall of the pool from the left side of the pool, enters the pool and is bent upwards to form a water inlet pipe bent pipe, and the top end of the bent part of the water inlet pipe bent pipe is not lower than the designed water level; the overflow pipe is arranged on the right side of the pool, penetrates through the pool wall of the pool from the right side of the pool, enters the pool and is bent upwards to form an overflow pipe bent pipe, and the top end of the bent part of the overflow pipe bent pipe is not higher than the highest design water level. By means of the design that the water inlet pipe is bent upwards to the designed water level in the water pool, the problem of water flow backflow caused by siphoning of a traditional water inlet pipe is solved, one-way stable water supply of a water conveying system is guaranteed, scouring to the bottom plate is reduced, and water supply efficiency and reliability are improved. And system faults and maintenance workload caused by water flow backflow are reduced.
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Description

Technical Field

[0001] This utility model relates to the technical field of water tank water supply and drainage systems, specifically to an anti-siphon installation structure for a water tank inlet pipe. Background Technology

[0002] In irrigation and water supply pipeline systems, regulating or pressure-regulating water tanks play a crucial role. Traditionally, the inlet pipe installation structure typically bends downwards above the lowest water level. However, this conventional structure has significant drawbacks. Firstly, it easily leads to siphoning, causing backflow of water from the inlet pipe. Water within the tank may flow back through the inlet pipe, wasting water resources and potentially contaminating or damaging the external water supply system. Secondly, the direct impact of the inlet water on the tank's bottom slab over time causes severe erosion, shortening the tank's lifespan. Furthermore, during operation, water level monitoring, ventilation, debris removal, and maintenance require comprehensive consideration and optimization. Existing installation structures often fail to adequately meet these needs, resulting in low operational efficiency and safety, severely impacting the normal operation and stability of the water supply system. Utility Model Content

[0003] This utility model aims to provide an anti-siphon installation structure for the water inlet pipe of a water tank. By rationally designing the structure and installation method of components such as the water inlet pipe, overflow pipe, and ventilation pipe, it solves the problems of siphon backflow and bottom plate scouring. At the same time, it realizes multiple functions such as water level monitoring, ventilation, debris cleaning, and convenient maintenance and repair, thereby improving the stability, safety, and practicality of the water tank's water supply and drainage system.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a water inlet pipe anti-siphon installation structure for a water tank, comprising an inlet pipe and an overflow pipe installed on the wall of the water tank; the water inlet pipe passes through the water tank wall from the left side of the water tank and enters the water tank, then bends upward to form an inlet pipe bend, the height of the top of the bend of the water pipe bend being higher than the height of the inlet pipe; the overflow pipe is located on the right side of the water tank, passes through the water tank wall from the right side of the water tank and enters the water tank, then bends upward to form an overflow pipe bend, the height of the top of the bend of the overflow pipe bend being higher than the height of the overflow pipe.

[0005] The bending angle of the inlet pipe bend is 90±5°, and the top of the bend of the inlet pipe bend is not lower than the design water level to prevent backflow of water in the inlet pipe due to siphon effect.

[0006] The bending angle of the overflow pipe bend is 90±5°, and the top of the bend of the overflow pipe bend is not higher than the highest design water level; the outlet end of the overflow pipe is higher than the design water level.

[0007] Waterproof sleeves are installed on the pool walls to seal and wrap the inlet and overflow pipes that pass through the pool walls.

[0008] A level gauge is installed in the water tank, and the installation position of the level gauge is adapted to the water inlet pipe of the water tank. The level gauge is used to monitor the water level changes in the water tank and provide data for the water flow control of the inlet pipe.

[0009] A ventilation pipe is installed inside the pool, located at the top of the pool and connected to the inside of the pool. A ventilation cap is installed at the top of the ventilation pipe to maintain stable air pressure inside the pool and ensure smooth water flow during the water intake process.

[0010] The pool is equipped with a sump and a steel ladder. The sump is used to collect debris and water from the pool, while the steel ladder is used to facilitate personnel access to the pool for maintenance and repair.

[0011] The pool is equipped with a water collection pit and a steel ladder. The water collection pit is a concave groove structure at the bottom of the pool, used to collect debris and accumulated water in the pool. The steel ladder is located on one side of the pool, with the upper end connected to the upper part of the pool and the lower end connected to the bottom of the pool, to facilitate personnel to enter the pool for maintenance and repair.

[0012] A water outlet pipe is installed on the right side of the bottom of the water collection pit, and a waterproof sleeve is installed at the part of the water outlet pipe that passes through the pool wall.

[0013] The outlet pipe is made of a material that is corrosion-resistant and water pressure-resistant, and its diameter is determined according to the design flow rate, water supply pressure and usage requirements of the water tank.

[0014] The water inlet pipe and overflow pipe of the water tank are made of materials that are corrosion-resistant and water pressure-resistant, and their pipe diameter is determined according to the design flow rate, water supply pressure and usage requirements of the water tank. Beneficial effects

[0015] 1. This utility model prevents siphon backflow: The innovative design of bending the inlet pipe upwards in the water tank to the designed water level successfully solves the problem of water backflow caused by the siphon effect in traditional inlet pipes, ensuring a stable one-way water supply to the water conveyance system, improving water supply efficiency and reliability, and reducing system failures and maintenance workload caused by water backflow.

[0016] 2. This utility model reduces bottom plate erosion: by changing the direction and impact mode of water flow into the pool, it significantly reduces the erosion force of the water flow in the inlet pipe on the bottom plate of the pool, effectively extends the service life of the bottom plate of the pool, reduces the risk of damage to the pool structure, and reduces the economic costs and project delays caused by bottom plate repair or replacement.

[0017] 3. The structure of this utility model is simple and practical: The installation structure of this utility model is relatively simple, without the need for complex additional equipment or control systems, making it easy to implement and maintain the project. It reduces the construction difficulty and technical threshold, has high promotion and application value, and can be widely used in water tank inlet pipe installation projects in various irrigation projects and water supply projects.

[0018] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0021] In the diagram: 1. Inspection hole; 2. Ventilation cap; 3. Ventilation pipe; 4. Sump; 5. Steel ladder; 6. Level gauge; 7. Irregularly shaped pipe; 8. Waterproof sleeve; 9. Inlet pipe; 10. Overflow pipe; 11. Overflow pipe bend; 12. Inlet pipe bend; 13. Outlet pipe; 14. C20 subbase; 15. C30 reinforced concrete base slab; 16. Pool wall; 17. C30 reinforced concrete top slab; A. Design ground level; B. Design water level. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Figure 1 This invention demonstrates an anti-siphon installation structure for a water tank inlet pipe. The figure shows the inlet pipe bending upwards within the tank to the designed water level, as well as the relative positions and connections of various components within the tank. The layout of components such as inspection holes, ventilation caps, and ventilation pipes, together with the inlet pipe and overflow pipe, constitutes a complete water tank water conveyance system.

[0024] Example:

[0025] according to Figure 1 An anti-siphon installation structure for a water tank inlet pipe is disclosed, wherein the water tank is located below a designed ground level A. This utility model includes an inlet pipe 9 and an overflow pipe 10 installed on the water tank wall 16. The inlet pipe 9 passes through the water tank wall 16 from the left side of the water tank and enters the water tank, then bends upward to form an inlet pipe bend 12. The height of the top of the bend in the bend 12 is higher than the height of the inlet pipe 9. The overflow pipe 10 is symmetrically arranged on the right side of the water tank, passing through the water tank wall 16 from the right side of the water tank and entering the water tank, then bends upward to form an overflow pipe bend 11. The height of the top of the bend in the overflow pipe bend 11 is higher than the height of the overflow pipe 10.

[0026] The bending angle of the inlet pipe bend 12 is 90±5°, preferably 90°, but 88°, 89° or 92° are also acceptable; the top of the bend of the inlet pipe bend 12 is not lower than the design water level B, so as to effectively prevent the occurrence of siphon phenomenon and reduce the scouring of water flow on the bottom plate 15 of the water tank during normal water supply and water supply stoppage.

[0027] The bending angle of the overflow pipe bend 11 is 90±5°, preferably 90°, but 88°, 89°, or 92° are also acceptable. The top of the bend of the overflow pipe bend 11 is not higher than the highest design water level. It is used for overflow drainage when the water level in the pool exceeds the highest design water level. The overflow pipe bend 11 is used to guide the overflow water flow direction and prevent damage to the surrounding structure of the pool. A special-shaped pipe 7 is connected to the top of the overflow pipe bend 11. When the water level in the pool exceeds the highest water level, the special-shaped pipe 7 ensures that the water flows smoothly into the overflow pipe bend 11 and is discharged through the overflow pipe 10.

[0028] A waterproof sleeve 8 is installed on the pool wall 16. The waterproof sleeve 8 is used to seal and wrap the water inlet pipe 9 and overflow pipe 10 that pass through the pool wall. The waterproof sleeve 8 seals the connection between the water inlet pipe 9 and overflow pipe 10 and the pool wall 16 to prevent water leakage.

[0029] A level gauge 6 is installed in the water tank. The installation position of the level gauge 6 is adapted to the water inlet pipe 9 of the water tank. The level gauge 6 is used to monitor the water level changes in the water tank and provide data for the water flow control of the water inlet pipe 9. Its installation position should be able to accurately detect the water level and be adapted to the operating status of the water inlet pipe 9. When the water level is close to the design water level B, it can provide data for the water flow control of the water inlet pipe 9 and prevent the water level from being too high or too low from having an adverse effect on the operation of the water inlet pipe.

[0030] A ventilation pipe 3 is installed inside the water tank, located at the top of the tank and connected to the interior. A ventilation cap 2 is installed at the top of the ventilation pipe 3 to maintain stable air pressure inside the tank, ensuring smooth water flow during the water inlet pipe 9. The ventilation cap 2 is connected to the ventilation pipe 3 to ensure air circulation inside the tank, maintain air pressure balance, facilitate stable water flow in the water inlet pipe 9, and prevent odor accumulation. Multiple sets of ventilation pipes 3 can be installed according to the specific parameters of the water tank.

[0031] The water tank is equipped with a water collection pit 4 and a steel ladder 5. The water collection pit 4 is a concave groove structure set at the bottom of the water tank, which is used to collect debris and accumulated water in the water tank. The steel ladder 5 is set on one side of the water tank. The upper end of the steel ladder 5 is connected to the upper part of the water tank and communicates with the inspection hole 1. The lower end is connected to the bottom of the water tank. The steel ladder 5 provides a safe passage for personnel to enter the water tank for maintenance and repair. The setting of the water collection pit 4 and the steel ladder 5 does not obstruct the normal operation and maintenance of the main pipelines such as the water inlet pipe 9 and the overflow pipe 10.

[0032] A water outlet pipe 13 is provided on the right side of the bottom of the water collection pit 4. A waterproof sleeve 8 is provided at the part of the water outlet pipe 13 that passes through the pool wall 16 to seal the connection between the water outlet pipe 3 and the pool wall 16 to prevent water leakage.

[0033] The pipe material of the outlet pipe 13 has the characteristics of corrosion resistance and water pressure resistance, and its pipe diameter is determined according to the design flow rate, water supply pressure and usage requirements of the water tank.

[0034] The water inlet pipe 9 and overflow pipe 10 of the water tank are made of materials that are corrosion-resistant and water pressure-resistant. Their pipe diameter is determined according to the design flow rate, water supply pressure and usage requirements of the water tank.

[0035] In the actual implementation process, the various components work together; such as Figure 1As shown, inspection hole 1 facilitates regular inspection and maintenance of the equipment and pipes inside the water tank; ventilation cap 2 is connected to ventilation pipe 3 to ensure air circulation in the water tank, maintain air pressure balance, facilitate stable water flow in inlet pipe 9, and prevent odor accumulation; sump 4 is used to collect accumulated water and impurities in the water tank; steel ladder 5 provides a safe passage for personnel to enter the water tank; level gauge 6 monitors the water level changes in the water tank in real time, providing data for system control; special-shaped pipe 7 is connected to the top of overflow pipe bend 11, ensuring a smooth water flow into overflow pipe 10 when the water level in the water tank exceeds the maximum water level; special-shaped pipe 7 can be customized according to specific pipe layout and connection requirements; waterproof sleeve 8 protects the parts of inlet pipe 9, overflow pipe 10, and outlet pipe 3 that pass through the water tank wall 16. The inlet pipe 9 serves as a waterproof seal; its key feature is that it bends upwards within the pool to the designed water level; the overflow pipe 10 discharges excess water when the water level in the pool exceeds the set maximum level; the overflow pipe bend 11 optimizes the overflow path; the inlet pipe bend 12 is the key part that enables the upward bending function of the inlet pipe; the outlet pipe 13 transports the treated water from the pool to subsequent use stages; the C20 subbase 14 provides a foundation buffer and leveling support for the bottom of the pool; the C30 reinforced concrete base slab 15 bears the overall weight of the pool and the internal water pressure; the pool wall 16, formed by C30 reinforced concrete, ensures the structural strength and sealing of the pool; and the C30 reinforced concrete top slab 17 covers the top of the pool, providing protection and sealing. In application, the size of the pool, the diameter of each pipe, and other relevant technical parameters can be flexibly determined according to actual project needs to achieve the best installation and operation results.

[0036] In practical engineering applications, the overall dimensions of the water tank, including key parameters such as length, width, and depth, are first determined based on factors such as the tank's design purpose, expected storage capacity, and surrounding environment. Then, according to the tank's dimensions and design flow rate requirements, appropriate pipe materials for inlet, overflow, and outlet pipes are selected, and the specific installation locations of each pipe are determined. During construction, a C20 foundation layer is first poured to ensure a flat and solid base. Next, a C30 reinforced concrete base slab, a steel reinforcement framework for the tank walls and top slab are constructed, and concrete is poured. Holes for installing waterproof sleeves are accurately pre-drilled during tank wall construction. After the main structure of the tank is completed, the inlet pipe is installed, bent upwards within the tank to the design water level according to design requirements, ensuring accurate bending angles and secure connections. Simultaneously, overflow pipes, outlet pipes, and other pipes are installed, and auxiliary equipment such as ventilation pipes and level gauges are connected. Finally, a sealing test and debugging of the entire system were carried out to check whether the inlet pipe could effectively prevent siphon backflow, whether the pipe connections were well sealed, and whether equipment such as level gauges were working properly, so as to ensure that the water tank water supply system could operate stably and efficiently.

[0037] Where there is no conflict, those skilled in the art can combine the relevant technical features in the above examples according to the actual situation to achieve the corresponding technical effects. Specific details of the various combinations will not be elaborated here.

[0038] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0039] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0040] The above description is merely a preferred embodiment of the present invention. The present invention is not limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. Any simple modifications, equivalent variations, and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the present invention.

Claims

1. A siphon-proof installation structure for a water tank inlet pipe, characterized in that: The system includes an inlet pipe (9) and an overflow pipe (10) installed on the wall (16) of the pool. The inlet pipe (9) passes through the pool wall (16) from the left side of the pool and enters the pool, then bends upward to form an inlet pipe bend (12). The height of the top of the bend of the bend (12) is higher than the height of the inlet pipe (9). The overflow pipe (10) is located on the right side of the pool. The overflow pipe (10) passes through the pool wall (16) from the right side of the pool and enters the pool, then bends upward to form an overflow pipe bend (11). The height of the top of the bend of the overflow pipe bend (11) is higher than the height of the overflow pipe (10).

2. The anti-siphon installation structure for a water tank inlet pipe according to claim 1, characterized in that: The bending angle of the inlet pipe bend (12) is 90±5°, and the top of the bend of the inlet pipe bend (12) is not lower than the design water level to prevent backflow of water in the inlet pipe due to siphon effect.

3. The anti-siphon installation structure for a water tank inlet pipe according to claim 1, characterized in that: The bending angle of the overflow pipe bend (11) is 90±5°, and the top of the bend of the overflow pipe bend (11) is not higher than the highest design water level.

4. The anti-siphon installation structure for a water tank inlet pipe according to claim 1, characterized in that: A waterproof sleeve (8) is installed on the pool wall (16). The waterproof sleeve (8) is used to seal and wrap the pool inlet pipe (9) and overflow pipe (10) that pass through the pool wall.

5. The anti-siphon installation structure for a water tank inlet pipe according to claim 1, characterized in that: A level gauge (6) is installed in the water tank. The installation position of the level gauge (6) is adapted to the water inlet pipe (9) of the water tank. The level gauge (6) is used to monitor the water level change in the water tank and provide data basis for the water flow control of the water inlet pipe (9).

6. The anti-siphon installation structure for a water tank inlet pipe according to claim 1, characterized in that: A ventilation pipe (3) is installed inside the pool. The ventilation pipe (3) is located at the top of the pool and is connected to the inside of the pool. A ventilation cap (2) is installed at the top of the ventilation pipe (3) to maintain stable air pressure inside the pool and ensure smooth water flow during the water inlet pipe (9) process.

7. The anti-siphon installation structure for a water tank inlet pipe according to any one of claims 1-6, characterized in that: The pool is equipped with a water collection pit (4) and a steel ladder (5). The water collection pit (4) is a concave groove structure set at the bottom of the pool, used to collect debris and water in the pool. The steel ladder (5) is set on one side of the pool. The upper end of the steel ladder (5) is connected to the upper part of the pool, and the lower end is connected to the bottom of the pool, so as to facilitate personnel to enter the pool for maintenance and repair.

8. The anti-siphon installation structure for a water tank inlet pipe according to claim 7, characterized in that: A water outlet pipe (13) is provided on the right side of the bottom of the water collection pit (4), and a waterproof sleeve (8) is provided at the part where the water outlet pipe (13) passes through the pool wall (16).

9. The anti-siphon installation structure for a water tank inlet pipe according to claim 7, characterized in that: The pipe material of the outlet pipe (13) has the characteristics of corrosion resistance and water pressure resistance, and its pipe diameter is determined according to the design flow rate, water supply pressure and usage requirements of the water tank.

10. The anti-siphon installation structure for a water tank inlet pipe according to claim 1, characterized in that: The water inlet pipe (9) and overflow pipe (10) of the water tank are made of materials that are corrosion resistant and water pressure resistant. The pipe diameter is determined according to the design flow rate, water supply pressure and usage requirements of the water tank.