Siphon breaking device for sewage treatment

Abstract

A siphon destroying device for sewage treatment is characterized in that the siphon destroying device comprises a gradually-shrinking section, a throat and a gradually-expanding section, and a valve connecting pipe is arranged at the throat; the vacuum breaking valve assembly comprises a rubber floating ball, an air inlet and a sealing cavity; due to the anti-leakage design, a plurality of layers of silica gel sealing rings are arranged at the air inlet, and double sealing is formed by the silica gel sealing rings and the rubber floating ball; the ratio of the diameter of the throat to the diameter of the main water inlet pipe is 1: 2.5-3, so that the relation between the flow speed and the negative pressure is optimized. By optimizing the sealing structure and material selection, the problem of sewage leakage is fundamentally solved, and environmental pollution is avoided. In addition, due to the firm and durable design, the damage frequency of parts is greatly reduced, and the maintenance cost is remarkably reduced. In conclusion, the utility model aims to overcome the defects of the existing siphon destroying device, provides an efficient, stable, environment-friendly and economical siphon destroying solution, and powerfully promotes the stable operation and efficient development of a sewage treatment system.

Description

TECHNICAL FIELD

[0001] The utility model relates to a siphon breaking device more specifically, a siphon breaking device for sewage treatment. BACKGROUND

[0002] In the sewage treatment system, wastewater will generally be lifted to the treatment unit by the pump or be transported to the dosing mixing link. However, when the water pump suddenly stops running, the fluid in the pipeline will form negative pressure in the pipeline due to the inertia effect, and then generate siphon effect, which will undoubtedly cause adverse effects on the efficiency of sewage treatment. In the prior art, a vacuum breaking valve or an air inlet and exhaust valve is usually used to break the vacuum to eliminate the siphon phenomenon. However, these methods have some obvious defects: the traditional floating ball type and spring type vacuum breaking valve has poor sealing performance when facing high pressure environment or sudden change of flow rate. In particular, the top air inlet is prone to sewage leakage, which not only causes environmental pollution, but also may cause corrosion and other hazards to the surrounding equipment and facilities; due to the corrosive nature of the leaked sewage, the sealing ring or floating ball needs to be frequently replaced, which undoubtedly greatly increases the operation and maintenance cost and brings additional economic burden to the sewage treatment work.

[0003] In view of the above problems, there is an urgent need in the market for a siphon breaking device that can effectively eliminate the siphon effect, prevent sewage leakage, reduce maintenance cost and be stable and reliable. Therefore, we have invented a siphon breaking device based on a unique principle. The ingenious internal structure of the device guides the water flow and generates stable negative pressure to balance the pressure in the pipeline, effectively eliminating the siphon phenomenon. At the same time, by optimizing the sealing structure and material selection, the problem of sewage leakage is fundamentally solved, and environmental pollution is avoided. In addition, its design of being strong and durable greatly reduces the damage frequency of parts and significantly reduces the maintenance cost. In summary, the utility model aims to solve the many defects of the existing siphon breaking device and provide an efficient, stable, environmentally friendly and economical siphon breaking solution to effectively promote the stable operation and efficient development of the sewage treatment system. SUMMARY

[0004] To solve the above technical problems, the utility model provides a siphon breaking device for sewage treatment adopts the following technical scheme:

[0005] A siphon breaking device for sewage treatment, characterized in that it comprises:

[0006] (a) a tapered section, a throat and a diverging section, a valve connecting pipe is arranged at the throat;

[0007] (b) a vacuum breaking valve assembly comprising a rubber floating ball, an air inlet and a sealing cavity;

[0008] (c) Anti-leakage design, a plurality of silica gel sealing rings are arranged at the air inlet, and double sealing is formed with the rubber floating ball; the diameter ratio of the throat to the main water inlet pipe is 1:2.5-3, so that the flow rate and the negative pressure are optimized.

[0009] Further, the rubber floating ball is pushed upward by pressure under normal working conditions, and the air inlet is closed; in the siphon breaking stage of the pump, the rubber floating ball falls due to gravity, the air inlet is opened, and external air enters the pipeline through the valve connecting pipe to destroy the vacuum.

[0010] Further, the rubber floating ball is made of EPDM or fluororubber; and the diameter of the rubber floating ball is 0.8-0.9 times the inner diameter of the sealing cavity.

[0011] Further, the negative pressure generated by the Venturi effect in the device can reduce the impact of the water flow on the rubber floating ball under the water pump pressure, and further block the sewage leakage path.

[0012] Further, the plurality of silica gel sealing rings can effectively prevent the sewage pipe from leaking due to the large pump pressure, and avoid the leakage pollution in the sewage treatment process.

[0013] Compared with the prior art, the advantages of the utility model lie in that:

[0014] (1) The utility model effectively prevents the vacuum breaking valve from leaking due to the large pump pressure, avoids the leakage pollution in the sewage treatment process, reduces the pollution risk to the surrounding environment, and protects the ecological environment and water resources.

[0015] (2) The utility model reduces the sewage treatment system failure and maintenance cost caused by leakage, improves the operation efficiency and stability of the sewage treatment facility, and reduces the environmental governance and repair cost.

[0016] (3) The utility model provides a new idea and method for the siphon breaking technology in the sewage treatment field, and promotes the innovation and development of related technologies. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic view of the utility model;

[0018] 1-valve connecting pipe, 2-rubber floating ball, 3-air inlet, 4-main water inlet pipe, 5-tapered section, 6-throat, 7-tapered section, 8-sealing cavity, 9-plurality of silica gel sealing rings. DETAILED DESCRIPTION

[0019] The utility model will be further described and explained in combination with the drawings and specific embodiments.

[0020] AsFigure 1 The utility model provides a siphon breaking device for sewage treatment, characterized in that it comprises:

[0021] (a) a tapered section 5, a throat 6 and a diverging section 7, wherein the throat 6 is provided with a valve connecting pipe 1;

[0022] (b) a vacuum breaking valve assembly comprising a rubber floating ball 2, an air inlet 3 and a sealed cavity 8;

[0023] (c) an anti-leakage design, wherein a plurality of silica gel sealing rings 9 are arranged at the air inlet 3 to form double sealing with the rubber floating ball 2; the diameter ratio of the throat 6 to the main water inlet pipe 4 is 1:2.5-3 to optimize the relationship between flow rate and negative pressure.

[0024] Under normal working conditions, the rubber floating ball 2 is pushed upward by pressure and closes the air inlet 3; during the siphon stage after the pump is stopped, the rubber floating ball 2 falls due to gravity and opens the air inlet 3, and external air enters the pipeline through the valve connecting pipe 1 to break the vacuum in the pipeline.

[0025] The rubber floating ball 2 is made of ethylene-propylene-diene rubber or fluororubber; the diameter of the rubber floating ball 2 is 0.8-0.9 times the inner diameter of the sealed cavity 8.

[0026] The negative pressure generated by the Venturi effect in the device can reduce the impact of water flow on the rubber floating ball 2 under the pressure of the water pump, thereby blocking the leakage path of sewage.

[0027] The plurality of silica gel sealing rings 9 can effectively prevent the vacuum breaking valve assembly from leaking due to the high pump pressure, thereby avoiding the leakage pollution during the sewage treatment process.

[0028] The operation process of the device is as follows:

[0029] (1) Normal working condition operation stage: sewage enters the tapered section 5, and the water flow rate gradually increases as the pipe cross section gradually decreases. When the water flow reaches the throat 6, the flow rate increases sharply and the pressure decreases. By utilizing the Venturi effect, the upward adsorption force on the rubber floating ball 2 is reduced, and the rubber floating ball 2 gradually moves upward until the air inlet 3 is closed. At this time, external air cannot enter the pipeline, the device operates normally, and sewage continuously flows through the diverging section 7 and is discharged.

[0030] (2) Siphon stage after the pump is stopped: when the water pump is suddenly stopped, the pressure in the pipeline drops sharply, and the water flow continues to flow due to inertia, forming a siphon effect. At this time, the pressure on the rubber floating ball 2 disappears, and the rubber floating ball 2 falls under the action of gravity, and the air inlet 3 is opened. External air enters the pipeline through the valve connecting pipe 1 quickly, thereby breaking the vacuum state in the pipeline and effectively preventing the siphon phenomenon from continuing to occur.

[0031] (3) Leakage Prevention Stage: Leakage prevention design plays a crucial role throughout the entire operation. On the one hand, the multi-layer silicone sealing ring 9 at the air inlet 3 and the rubber float 2 work closely together to form a double seal, preventing sewage from leaking from the air inlet. On the other hand, the negative pressure generated by the Venturi effect can reduce the impact of water flow on the rubber float 2 under the pressure of the water pump, block the sewage leakage path, ensure that the device can operate stably under various working conditions, and avoid sewage leakage from causing pollution to the environment.

[0032] This invention features a cleverly designed internal structure that guides water flow, generating stable negative pressure to balance the pressure within the pipes and effectively eliminate siphoning. Simultaneously, by optimizing the sealing structure and material selection, it fundamentally solves the problem of sewage leakage, preventing environmental pollution. Furthermore, its robust and durable design significantly reduces the frequency of component damage, substantially lowering maintenance costs. In summary, this invention aims to address the numerous shortcomings of existing siphon-breaking devices, providing a highly efficient, stable, environmentally friendly, and economical siphon-breaking solution, powerfully promoting the stable operation and efficient development of sewage treatment systems. Example

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0034] A siphon destruction device for sewage treatment was trial-produced using the above technical solution, such as... Figure 1 As shown, the device is installed at the highest horizontal elevation of the DN65 pipe section from the pump outlet to the dosing point.

[0035] The device includes a valve connecting pipe 1, a rubber float 2, an air inlet 3, a main water inlet pipe 4, a tapering section 5, a throat 6, a dilating section 7, a sealing cavity 8, and a multi-layer silicone sealing ring 9.

[0036] The device includes:

[0037] (a) Converging section 5, throat 6 and expanding section 7, wherein a valve connecting pipe 1 is provided at the throat 6;

[0038] (b) Vacuum breaker valve assembly, including rubber float 2, air inlet 3 and sealing cavity 8;

[0039] (c) Leak-proof design: The air inlet 3 is provided with a multi-layer silicone sealing ring 9, which forms a double seal with the rubber float 2; the diameter of the throat 6 is 1:2.5~3 to the diameter of the main water inlet pipe 4 to optimize the relationship between flow rate and negative pressure.

[0040] The rubber floating ball 2 is pushed upward by pressure in normal working condition to close the air inlet 3; in the pump siphon stage, the rubber floating ball 2 falls due to gravity to open the air inlet 3, and external air enters the pipeline through the valve connecting pipe 1 to destroy the vacuum.

[0041] The rubber floating ball 2 is made of EPDM or fluorine rubber material; the diameter of the rubber floating ball 2 is 0.8-0.9 times the inner diameter of the sealing cavity 8.

[0042] The negative pressure generated by the Venturi effect in the device can reduce the impact of the water flow on the rubber floating ball 2 under the water pump pressure, thereby blocking the sewage leakage path.

[0043] The multilayer silica gel sealing ring 9 can effectively prevent the sewage pipe from leaking due to the large pump pressure, and avoid the leakage pollution in the sewage treatment process.

[0044] By installing the above anti-siphon device on the system pipeline, the impact of pipeline pressure on the vacuum breaking valve is reduced by using the Venturi effect under normal dosing pump operating conditions, and no leakage phenomenon occurs after one year of operation, reducing environmental pollution. At the same time, in the pump-off state, the pipeline siphon feedback is destroyed in time, and the siphon can be destroyed within 0.5 seconds, reducing excessive dosing due to siphon problems in the pipeline, wasting reagents, and achieving better dosing treatment effect.

[0045] The above-described embodiments are only used to illustrate one embodiment of the present application, and not to limit it. It should be noted that: those skilled in the art can modify the technical solutions described in the above embodiments, or make equivalent substitutions for part or all of the technical features; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the protection scope of the technical solutions of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

Claims

1. A siphon break device for sewage treatment, characterized by, Comprise: (a) tapered section (5), throat (6) and diverging section (7), the throat (6) is provided with valve adapter pipe (1); (b) vacuum breaker valve assembly, including rubber floating ball (2), air inlet (3) and sealed cavity (8); (c) anti-leakage design, the air inlet (3) is provided with multilayer silica gel seal ring (9), and double sealing is formed with the rubber floating ball (2); The diameter ratio of the throat (6) and the diameter of the main water inlet pipe (4) is 1:2.5~3, to optimize the flow rate and negative pressure relationship.

2. A siphon break device for use in sewage treatment according to claim 1, characterised in that, The rubber floating ball (2) is pushed upward by pressure under normal working conditions, and the air inlet (3) is closed; In the pump siphon stage, the rubber floating ball (2) falls due to gravity, opens the air inlet (3), and external air enters the pipeline through the valve adapter pipe (1) to break the vacuum.

3. A siphon break device for use in sewage treatment according to claim 1, characterised in that, The rubber floating ball (2) is made of EPDM or fluororubber material; The diameter of the rubber floating ball (2) is 0.8~0.9 times the inner diameter of the sealed cavity (8).

4. A siphon break device for use in sewage treatment according to claim 1, wherein The negative pressure generated by the venturi effect in the device can reduce the impact of water flow on the rubber floating ball (2) under the pressure of the water pump, and further block the sewage leakage path.

5. A siphon break device for use in sewage treatment according to claim 1, wherein The multilayer silica gel seal ring (9) can effectively prevent the vacuum breaker valve assembly from leaking due to the large pump pressure of the sewage pipe, and avoid the leakage pollution in the sewage treatment process.

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