A siphon drainage device for a sewage tank

Abstract

The utility model discloses a kind of siphon drainage devices of sewage pool, including special-shaped U-shaped siphon, fixed support and air extraction device, special-shaped U-shaped siphon includes main channel and auxiliary channel, main channel includes mutually connected water inlet section, connecting section and water outlet section, connecting section connects water inlet section and water outlet section, water inlet section is fixed on the inner wall of sewage pool using fixed support, auxiliary channel connects connecting section, air extraction device includes air extraction mechanism and check valve, air extraction mechanism connects auxiliary channel, for air extraction to auxiliary channel, check valve also connects auxiliary channel, for making auxiliary channel one-way conduction, check valve includes cavity, baffle, fixed nut and air core, fixed nut is located at the bottom of cavity, for connecting auxiliary channel and cavity, air core is located at the top of cavity, baffle is connected below air core, and baffle is equipped with aperture. Compared with prior art, the utility model can realize the efficient, zero-energy consumption discharge of sewage.

Description

Technical Field

[0001] This utility model relates to the field of drainage technology, and in particular to a siphon drainage device for sewage tanks. Background Technology

[0002] In the field of wastewater treatment, the drainage technology of wastewater tanks is crucial. Traditional wastewater tank drainage methods mainly rely on pumping or gravity flow. While pumping can overcome certain limitations in drainage height and distance, the entire drainage process is entirely electric, resulting in high costs in terms of electricity consumption. Furthermore, the pumps and other equipment require regular maintenance, such as replacing worn parts and clearing blockages, significantly increasing the economic burden of wastewater treatment in the long run. Gravity flow, on the other hand, requires no additional electricity, but it is severely limited by the water level difference between the wastewater tank and the drainage terminal. When the water level difference is insufficient, the drainage efficiency is extremely low, or even ineffective, failing to meet the needs of practical wastewater treatment scenarios.

[0003] Existing siphon drainage systems attempt to address these issues to some extent; however, most siphon drainage systems have significant drawbacks. Many siphon drainage systems require manual triggering of the siphon process, which is cumbersome and cannot meet the needs of automated management. Siphon systems that partially rely on complex control devices not only increase equipment costs but are also prone to failure due to the complexity of the control devices, making it difficult to achieve automatic start-up and shutdown and stable operation.

[0004] In view of this, a siphon drainage device for sewage tanks is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a siphon drainage device for sewage tanks, which can achieve efficient and zero-energy discharge of sewage.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A siphon drainage device for a sewage tank includes a U-shaped siphon pipe, a fixed support, and an air extraction device. The U-shaped siphon pipe includes a main channel and an auxiliary channel. The main channel includes an inlet section, a connecting section, and an outlet section connected to each other. The connecting section connects the inlet section and the outlet section. The inlet section is fixed to the inner wall of the sewage tank by the fixed support. The auxiliary channel is connected to the connecting section. The air extraction device includes an air extraction mechanism and a one-way valve. The air extraction mechanism is connected to the auxiliary channel and is used to extract air into the auxiliary channel. The one-way valve is also connected to the auxiliary channel and is used to allow one-way flow in the auxiliary channel. The one-way valve includes a cavity, a baffle, a fixing nut, and an air core. The fixing nut is located at the bottom of the cavity and is used to connect the auxiliary channel and the cavity. The air core is located at the top of the cavity. The baffle is connected below the air core and has an opening.

[0008] In a preferred embodiment, the openings are provided in multiple ways, and the multiple openings are evenly arranged.

[0009] In a preferred embodiment, the end of the water inlet section is provided with a swirling anti-clogging device, which includes multiple blades and a central disk. One end of each blade is connected to the inner wall of the water inlet section, and the other end is connected to the central disk. The multiple blades are eccentrically arranged.

[0010] In a preferred embodiment, the blade offset ratio is 0.15-0.20, and the swirl angle is 20°-30°.

[0011] In a preferred embodiment, the suction mechanism includes a foot pedal, a lever, a piston rod, a piston head, and a connecting rod. The piston head is disposed in the auxiliary channel. One end of the piston rod is connected to the piston rod, and the other end is connected to the connecting rod. The other end of the connecting rod is connected to the lever, and the lever is connected to the foot pedal.

[0012] In a preferred embodiment, the water outlet section is inclined at 45°.

[0013] In a preferred embodiment, the end of the water outlet section is provided with an automatic telescopic gate, the upper end of which is hinged to the end of the water outlet section, and the lower part is provided with a first magnet. The end of the water outlet section has a second magnet that attracts the first magnet.

[0014] In a preferred embodiment, the distance between the magnets of the first magnet and the second magnet is 1.5-3cm, and the magnetic strength is ≥200mT.

[0015] Compared with existing technologies, this utility model provides a siphon drainage device for sewage tanks, whose auxiliary channel is connected to the connecting section, providing a pathway for air extraction and air pressure regulation. The air extraction mechanism in the air extraction device extracts air from inside the siphon tube through the auxiliary channel, while the one-way valve ensures unidirectional airflow. The two work together to create a negative pressure environment inside the siphon tube, triggering the siphon effect, thereby driving sewage to achieve gravity discharge without electric pumping. This fundamentally solves the problems of traditional pumped drainage relying on electricity and high maintenance costs, while breaking through the technical bottleneck of gravity flow being limited by water level difference, achieving the goal of zero energy consumption for sewage discharge.

[0016] The bottom of the one-way valve's chamber is connected to an auxiliary channel via a fixing nut, and an air core is installed at the top. A baffle with openings is connected below the air core. When the internal air pressure exceeds a predetermined threshold (such as during the initial startup of a siphon or pressure fluctuations due to flow rate changes during operation), the air core automatically moves upward under the pressure, causing the baffle to rise synchronously. At this time, the baffle limits the air core, preventing it from being completely ejected from the chamber due to excessive pressure, thus ensuring structural integrity. When the air pressure drops to a safe range, the air core automatically resets under its own gravity and airflow, and the baffle returns to its initial position.

[0017] The synergistic effect of the aforementioned mechanical structure and natural forces gives the device multiple technical advantages: First, the design of triggering the siphon through air extraction allows the system to start without manual intervention, significantly improving automation and reducing operating costs compared to traditional manually triggered siphon devices. Second, the pressure adaptive adjustment mechanism of the one-way valve can automatically switch between venting and sealing based on changes in air pressure within the siphon pipe, avoiding the use of complex electronic control devices, reducing equipment costs, minimizing operational risks due to electronic component failures, and enhancing system stability. Third, the entire drainage process relies solely on the siphon effect and the physical action of the mechanical structure, requiring no continuous energy consumption, aligning with green environmental protection principles. Furthermore, it can operate adaptively under various water level conditions, broadening its application scenarios, and is particularly suitable for wastewater treatment in remote areas, areas with unstable power supply, or complex terrain.

[0018] In summary, through its ingenious mechanical structure design and dynamic air pressure regulation mechanism, this device has successfully overcome the bottlenecks of traditional drainage technology in terms of energy consumption, automation, reliability, and environmental adaptability, achieving the goals of high efficiency, stability, and low energy consumption in wastewater discharge. Attached Figure Description

[0019] Figure 1 This utility model relates to a structural schematic diagram of a sewage tank siphon drainage device.

[0020] Figure 2 This utility model relates to a schematic diagram of the air extraction mechanism and one-way valve of a sewage tank siphon drainage device.

[0021] Figure 3 This utility model relates to a vortex anti-clogging device for a siphon drainage system for sewage tanks.

[0022] Figure 4 This utility model relates to a structural schematic diagram of an automatic telescopic gate for a sewage tank siphon drainage device.

[0023] Figure 5 This utility model relates to a structural schematic diagram of a one-way valve of a sewage tank siphon drainage device.

[0024] Figure 6 This is a schematic diagram of the structure of a baffle plate of a siphon drainage device for a sewage tank, which is related to the present invention.

[0025] In the picture

[0026] 1. Fixed bracket; 2. Main channel; 3. Inlet section; 4. Connecting section; 5. Outlet section; 6. Auxiliary channel; 7. Swirl anti-clogging device; 8. Blade; 9. Central disc; 10. Foot pedal; 11. Lever; 12. Piston rod; 13. Piston head; 14. Connecting rod; 15. Automatic telescopic gate; 16. First magnet; 17. Second magnet; 18. One-way valve; 19. Cavity; 20. Fixing nut; 21. Air core; 22. Baffle; 23. Opening. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to the accompanying drawings.

[0028] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0029] like Figures 1 to 6As shown, a sewage tank siphon drainage device includes a U-shaped siphon pipe, a fixed support 1, and an air extraction device. The U-shaped siphon pipe includes a main channel 2 and an auxiliary channel 6. The main channel 2 includes an inlet section 3, a connecting section 4, and an outlet section 5 connected to each other. The connecting section 4 connects the inlet section 3 and the outlet section 5. The inlet section 3 is fixed to the inner wall of the sewage tank by the fixed support 1. The auxiliary channel 6 connects to the connecting section 4. The air extraction device includes an air extraction mechanism and a one-way valve 18. The air extraction mechanism connects to... The auxiliary channel 6 is connected to the auxiliary channel 6 for drawing air into the auxiliary channel 6. The one-way valve 18 is also connected to the auxiliary channel 6 for allowing the auxiliary channel 6 to be unidirectionally open. The one-way valve 18 includes a cavity 19, a baffle 22, a fixing nut 20, and an air core 21. The fixing nut 20 is located at the bottom of the cavity 19 and is used to connect the auxiliary channel 6 and the cavity 19. The air core 21 is located at the top of the cavity 19. The baffle 22 is connected below the air core 21 and has an opening 23.

[0030] This invention provides a siphon drainage device for sewage tanks. Its main channel 2 is responsible for large-flow discharge, while the auxiliary channel maintains siphon continuity and prevents interruptions due to sewage impurities. The auxiliary channel 6 connects to the connecting section 4, providing a pathway for air extraction and pressure regulation. The air extraction mechanism in the air extraction device extracts air from the inside of the siphon tube through the auxiliary channel 6, while the one-way valve 18 ensures unidirectional airflow. The two work together to create a negative pressure environment inside the siphon tube, triggering the siphon effect and thus driving the sewage to flow out by gravity without electric pumping. This fundamentally solves the problems of traditional pumped drainage relying on electricity and high maintenance costs, while also overcoming the technical bottleneck of gravity-fed drainage being limited by water level differences, achieving the goal of zero-energy sewage discharge.

[0031] The bottom of the cavity 19 of the one-way valve 18 is connected to the auxiliary channel 6 via a fixing nut 20. An air core 21 is installed at the top, and a baffle 22 is connected below the air core 21. The baffle 22 has an opening 23. When the internal air pressure exceeds a predetermined threshold (such as during the initial start-up of the siphon or pressure fluctuations caused by changes in flow rate during operation), the air core 21 automatically moves upward under the pressure, causing the baffle 22 to rise synchronously. At this time, the baffle 22 limits the air core 21, preventing it from being completely blown away from the cavity 19 due to excessive air pressure, thus ensuring structural integrity. When the air pressure drops to a safe range, the air core 21 automatically resets under its own gravity and airflow, and the baffle 22 returns to its initial position.

[0032] The synergistic effect of the aforementioned mechanical structure and natural forces gives the device multiple technical advantages: First, the design of triggering the siphon through air extraction allows the system to start without manual intervention, significantly improving automation and reducing operating costs compared to traditional manually triggered siphon devices. Second, the pressure adaptive adjustment mechanism of the one-way valve 18 can automatically switch between venting and sealing based on changes in air pressure within the siphon pipe, avoiding the use of complex electronic control devices, reducing equipment costs, minimizing operational risks due to electronic component failures, and enhancing system stability. Third, the entire drainage process relies solely on the siphon effect and the physical action of the mechanical structure, requiring no continuous energy consumption, aligning with green environmental protection principles. Furthermore, it can operate adaptively under various water level conditions, broadening its application scenarios, especially suitable for wastewater treatment in remote areas, areas with unstable power supply, or complex terrain.

[0033] In summary, through its ingenious mechanical structure design and dynamic air pressure regulation mechanism, this device has successfully overcome the bottlenecks of traditional drainage technology in terms of energy consumption, automation, reliability, and environmental adaptability, achieving the goals of high efficiency, stability, and low energy consumption in wastewater discharge.

[0034] To achieve smooth airflow, multiple openings 23 are provided, and the multiple openings 23 are evenly arranged.

[0035] To prevent clogging, a vortex anti-clogging device 7 is provided at the end of the inlet section 3. The vortex anti-clogging device 7 includes multiple blades 8 and a central disk 9. One end of each blade 8 is connected to the inner wall of the inlet section 3, and the other end is connected to the central disk 9. The multiple blades 8 are eccentrically arranged. By adopting an asymmetrical design, the stability of the sewage discharge flow can be improved, clogging can be prevented, and the discharge efficiency can be increased.

[0036] In this embodiment, the offset ratio of the blade 8 is 0.15-0.20, preferably 0.17, and the swirl angle is 20°-30°, preferably 25°.

[0037] Furthermore, the air extraction mechanism includes a foot pedal 10, a lever 11, a piston rod 12, a piston head 13, and a connecting rod 14. The piston head 13 is located in the auxiliary channel 6. One end of the piston rod 12 is connected to the piston rod 12, and the other end is connected to the connecting rod 14. The other end of the connecting rod 14 is connected to the lever 11, and the lever 11 is connected to the foot pedal 10. By pressing the lever 11 with the foot pedal 10, the piston head 13 is driven to move. The connecting rod 14 is hinged to the piston rod 12, causing the piston head 13 to reciprocate within the auxiliary channel. When the piston head 13 moves upward, the one-way valve 18 opens to expel air from the main channel 2 pipe. When the piston head 13 returns, the one-way valve 18 closes to prevent air backflow. This cyclical operation quickly establishes and maintains a negative pressure state in the pipe, using atmospheric pressure to draw water into the pipe and discharge it.

[0038] To facilitate drainage, the water outlet section 5 is inclined at 45°.

[0039] Furthermore, an automatic telescopic gate 15 is provided at the end of the water outlet section 5. The upper end of the automatic telescopic gate 15 is hinged to the end of the water outlet section 5, and a first magnet 16 is provided at the lower part. The end of the water outlet section 5 has a second magnet 17 that attracts the first magnet 16. The automatic telescopic gate is circular, the same size as the water outlet section 5, and its top end is connected to the top of the pipe. The telescopic gate is normally closed under the attraction between the first magnet 16 and the second magnet 17 to prevent foreign objects from entering the pipe and causing blockage. When the water flow increases, the telescopic gate opens by the impact of the flow and the gravity of the water to drain water. When the water flow decreases, the telescopic gate gradually closes under its own gravity. The opening size of the automatic telescopic gate 15 is determined by the water flow size.

[0040] The distance between the magnets of the first magnet 16 and the second magnet 17 is 1.5-3cm, and the magnetic strength is ≥200mT.

[0041] The sewage tank siphon drainage device of this embodiment can reduce the burial depth of the pre-buried drain pipe, and at the same time reduce the water tank configuration. A drain pump can be installed if not necessary.

[0042] In this embodiment, the U-shaped siphon tube is made of corrosion-resistant UPVC material for both the main channel 2 and the auxiliary channel, with a wall thickness of 5mm. The inner diameter of the main channel 2 is 200mm, and the inner diameter of the auxiliary channel is 50mm.

[0043] Structure: The main channel 2 and the auxiliary channel are connected by welding. The water outlet section 5 is inclined downward at 45°. An air extraction port is set at the top of the auxiliary channel.

[0044] Installation: The inlet end of the main channel 2 is fixed to the inner wall of the sewage tank by a stainless steel fixing bracket 1 (M12 bolts). The bracket spacing is 1m to resist drainage vibration.

[0045] Air extraction mechanism: Lever 11 is 1.2m long, foot pedal 10 is made of non-slip rubber and is connected to piston rod 12 by hinge; piston rod 12 is made of 304 stainless steel and has a stroke of 30cm; piston head 13 is made of silicone sealing ring and fits tightly against the inner wall of auxiliary channel. Each time foot pedal 10 is used, about 0.5L of air can be discharged from the auxiliary channel.

[0046] Anti-clogging vortex device: Blade 8 parameters: There are 6 blades in total, asymmetrically staggered, with the central axis offset to the left by 17%, the vortex angle is 25°, the thickness of blade 8 is 3mm, and they are welded to the inner wall of the inlet end of the main channel 2. Experiments show that the vortex device can increase the sewage flow rate by 20% and the impurity separation efficiency reaches 85%.

[0047] One-way valve 18: The volume of the cavity 19 is 0.3L, the diameter of the opening 23 of the baffle 22 is 8mm, the air core 21 is made of polytetrafluoroethylene, the rising stroke of the air core 21 is 5cm, when the air pressure in the cavity 19 reaches 0.1MPa, the air core 21 automatically moves up to exhaust air, and automatically resets after exhausting air.

[0048] Automatic sliding gate 15: Magnetic control: The sliding gate uses neodymium iron boron magnets (N35 grade). A 2cm arc length and 1cm thickness are installed at the end of the pipe and at the corresponding position of the sliding gate. The gate body is made of silicone material with a thickness of 2mm. When the water flow speed is ≥0.5m / s, the sliding gate is fully opened; when it is ≤0.2m / s, the gate closes under the action of magnetic force and gravity.

[0049] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Unless otherwise specified, an element defined by the phrase "comprising..." or "including..." does not exclude the presence of additional elements in the process, method, article, or terminal device that includes said element. Additionally, in this document, "greater than," "less than," "exceeding," etc., are understood to exclude the stated number; "above," "below," "within," etc., are understood to include the stated number.

[0050] The above description of the embodiments is provided to facilitate understanding and use of the present invention by those skilled in the art. It is obvious to those skilled in the art that various modifications can be easily made to the embodiments, and the general principles described herein can be applied to other embodiments without creative effort. Therefore, the present invention is not limited to the above embodiments. Any improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the protection scope of the present invention.

Claims

1. A siphon drainage device for a sewage tank, characterized in that, The device includes a U-shaped siphon pipe, a fixed support, and an air extraction device. The U-shaped siphon pipe includes a main channel and an auxiliary channel. The main channel includes an inlet section, a connecting section, and an outlet section that are connected to each other. The connecting section connects the inlet section and the outlet section. The inlet section is fixed to the inner wall of the sewage tank by the fixed support. The auxiliary channel is connected to the connecting section. The air extraction device includes an air extraction mechanism and a one-way valve. The air extraction mechanism is connected to the auxiliary channel and is used to extract air into the auxiliary channel. The one-way valve is also connected to the auxiliary channel and is used to allow one-way passage in the auxiliary channel. The one-way valve includes a cavity, a baffle, a fixing nut, and an air core. The fixing nut is located at the bottom of the cavity and is used to connect the auxiliary channel and the cavity. The air core is located at the top of the cavity. The baffle is connected below the air core and has an opening.

2. The sewage tank siphon drainage device according to claim 1, characterized in that, The opening is provided in multiple ways, and the multiple openings are evenly arranged.

3. The sewage tank siphon drainage device according to claim 1, characterized in that, The end of the water inlet section is provided with a vortex anti-clogging device, which includes multiple blades and a central disk. One end of each blade is connected to the inner wall of the water inlet section, and the other end is connected to the central disk. The multiple blades are eccentrically arranged.

4. The sewage tank siphon drainage device according to claim 3, characterized in that, The blade offset ratio is 0.15-0.20, and the swirl angle is 20°-30°.

5. The sewage tank siphon drainage device according to claim 1, characterized in that, The air extraction mechanism includes a foot pedal, a lever, a piston rod, a piston head, and a connecting rod. The piston head is located in the auxiliary channel. One end of the piston rod is connected to the piston rod, and the other end is connected to the connecting rod. The other end of the connecting rod is connected to the lever, and the lever is connected to the foot pedal.

6. The sewage tank siphon drainage device according to claim 1, characterized in that, The water outlet section is set at an inclination of 45°.

7. The sewage tank siphon drainage device according to claim 1, characterized in that, The end of the water outlet section is provided with an automatic telescopic gate. The upper end of the automatic telescopic gate is hinged to the end of the water outlet section, and the lower part is provided with a first magnet. The end of the water outlet section has a second magnet that attracts the first magnet.

8. The sewage tank siphon drainage device according to claim 7, characterized in that, The distance between the first magnet and the second magnet is 1.5-3cm, and the magnetic strength is ≥200mT.

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