Automatic siphon breaking device for outlet of substrate pump of settling tank

Abstract

The utility model provides an automatic siphon breaking device for an outlet of a substrate pump of a settling tank. The automatic siphon breaking device comprises the substrate pump, a black water buffer tank and an automatic siphon breaking device, the automatic siphon breaking device comprises a pi-shaped pipeline and a check valve, the pi-shaped pipeline is communicated with an outlet of the substrate pump and a connecting pipeline of the black water buffer tank, the check valve is arranged at the high point of the pi-shaped pipeline, and the check valve is connected with the pi-shaped pipeline. According to the automatic siphon breaking device, automatic siphon breaking is achieved through connection of the pi-shaped pipeline and the check valve. When the substrate pump is stopped, the check valve is automatically opened to cut off the siphon passage, so that black water is prevented from flowing to the black water buffer tank, and overflow is avoided; and when the substrate pump is started, the check valve is automatically closed, and a normal circulation path is recovered.

Description

Technical Field

[0001] The utility model relates to a siphon breaking device, in particular to an automatic siphon breaking device at a sedimentation tank bottom pump outlet, belonging to the technical field of industrial sewage treatment. Background Art

[0002] In industrial wastewater treatment, sedimentation tanks are used to separate solid particles from black water (i.e., solid-liquid separation). After the solid particles settle, a substrate pump conveys the sediment and some black water into a filter. The filter traps the solid particles, forming a filter cake. The filtrate (black water) is then pumped back into the sedimentation tank under pressure, achieving wastewater recycling.

[0003] Plate and frame filters are often used in this process. Their intermittent feeding characteristics require that the substrate pump automatically stop when the liquid level in the black water buffer tank is high to prevent overflow due to excessive liquid flowing into the black water buffer tank. Because the liquid level in the sedimentation tank is usually higher than the liquid level in the black water buffer tank (for example, the sedimentation tank level is 9 meters, while the black water buffer tank overflow level is 6 meters), when the substrate pump stops, the black water in the sedimentation tank may continue to flow into the black water buffer tank due to siphoning and gravity, causing the liquid level to exceed the safety limit and thus posing an overflow risk.

[0004] Currently, to prevent overflow risks caused by black water siphoning after the pump is stopped, operators are required to manually close the substrate pump outlet valve. This manual operation not only increases the manpower burden, but also may cause overflow safety hazards due to failure to operate in time. Utility Model Content

[0005] Based on the above background, the purpose of the present invention is to provide an automatic siphon breaking device at the bottom pump outlet of a sedimentation tank, which can automatically cut off the siphon effect when the bottom pump stops, so as to solve the problems described in the background technology.

[0006] In order to achieve the above-mentioned purpose of the utility model, the utility model provides the following technical solutions:

[0007] An automatic siphon breaking device for a sedimentation tank bottom pump outlet, comprising a bottom pump, a black water buffer tank and an automatic siphon breaking device;

[0008] The automatic siphon breaking device includes a π-shaped pipe and a check valve. The π-shaped pipe connects the outlet of the substrate pump and the connecting pipe of the black water buffer tank. The high point of the π-shaped pipe is provided with a check valve, and the check valve is connected to the π-shaped pipe.

[0009] Preferably, the check valve is a one-way opening structure, and when the substrate pump stops running, the check valve automatically opens; when the substrate pump starts running, the check valve automatically closes.

[0010] Preferably, the highest point of the π-shaped pipe is higher than the overflow level of the black water buffer tank.

[0011] Preferably, the diameter of the π-shaped pipe is equal to the diameter of the substrate pump outlet pipe.

[0012] Preferably, the π-shaped pipe and the check valve are made of corrosion-resistant materials.

[0013] Preferably, the check valve is connected to the π-shaped pipe via a flange.

[0014] Preferably, a sealing gasket is provided at the joint between the π-shaped pipe and the check valve.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] 1. This device is equipped with a unique π-shaped pipe and check valve structure. When the substrate pump stops running, the check valve automatically opens, quickly cutting off the siphon effect and preventing the black water in the sedimentation tank from continuously flowing into the black water buffer tank due to siphoning and gravity, thereby effectively avoiding the risk of the black water buffer tank exceeding the liquid level.

[0017] 2. This device can automatically control the opening and closing of the check valve according to the start and stop status of the substrate pump, without the need for manual operation, reducing dependence on operators, reducing work intensity, and reducing potential safety hazards caused by untimely manual operation;

[0018] 3. The π-shaped pipe and check valve provided in this device have a simple and compact structure and do not require an additional complex control system. They are easy to modify and install in the existing sedimentation tank system, saving modification costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

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

[0021] In the figure: 1. substrate pump; 2. black water buffer tank; 3. automatic siphon breaking device; 301. π-shaped pipe; 302. check valve. DETAILED DESCRIPTION

[0022] The following is a further detailed description of the technical solution of the present invention through specific embodiments and in conjunction with the accompanying drawings. It should be understood that the implementation of the present invention is not limited to the following embodiments, and any form of modification and / or change made to the present invention will fall within the scope of protection of the present invention.

[0023] In this utility model, unless otherwise specified, all parts and percentages are by weight. The equipment and raw materials used are commercially available or commonly used in the art. The methods in the following embodiments, unless otherwise specified, are conventional methods in the art. The components or equipment in the following embodiments, unless otherwise specified, are all common standard parts or components known to those skilled in the art. Their structures and principles are known to those skilled in the art through technical manuals or routine experimental methods.

[0024] The following detailed description of the embodiments of the present invention is made in conjunction with the accompanying drawings. In the following detailed description, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the embodiments of the present invention. However, one or more embodiments can also be implemented by those skilled in the art without these specific details.

[0025] like Figure 1 As shown, an automatic siphon breaking device at the outlet of a sedimentation tank substrate pump comprises a substrate pump 1, a black water buffer tank 2 and an automatic siphon breaking device 3;

[0026] The automatic siphon breaking device includes a π-shaped pipe 301 and a check valve 302. The π-shaped pipe 301 connects the outlet of the substrate pump 1 and the connecting pipe of the black water buffer tank 2. The check valve 302 is set at the high point of the π-shaped pipe 301, and the check valve 302 is connected to the π-shaped pipe 301.

[0027] This device connects the outlet of the substrate pump 1 to the connecting pipe of the black water buffer tank 2 via a pi-shaped pipe 301, forming a specific fluid passage. A check valve 302 is also installed at the highest point of the pi-shaped pipe 301, allowing it to automatically open and close according to the status of the substrate pump 1. This structure allows the check valve 302 to automatically open when the substrate pump 1 stops, thereby breaking the siphon effect and preventing black water from flowing into the black water buffer tank 2, thereby preventing the liquid level in the black water buffer tank 2 from exceeding the limit.

[0028] The check valve 302 is a one-way opening structure. When the substrate pump 1 stops running, the check valve 302 automatically opens; when the substrate pump 1 starts running, the check valve 302 automatically closes.

[0029] When substrate pump 1 stops, check valve 302 automatically opens, cutting off the siphon-induced flow of black water from the sedimentation tank into black water buffer tank 2, preventing the risk of over-leveling and overflow in black water buffer tank 2. When substrate pump 1 restarts, check valve 302 automatically closes, restoring the normal flow path and ensuring smooth flow of black water into black water buffer tank 2 without disrupting normal operation. This effectively achieves automatic siphon breaking and flow control.

[0030] The highest point of the π-shaped pipe 301 is higher than the overflow level of the black water buffer tank 2 .

[0031] The high point of the π-shaped pipe 301 is located above the overflow level of the black water buffer tank 2, ensuring that when the substrate pump 1 stops, the liquid level in the pipe will not fall below the overflow level of the black water buffer tank 2. This effectively cuts off the siphon path, preventing black water from continuing to flow into the black water buffer tank 2 under the siphon effect and preventing overflow. This ensures that the liquid level in the black water buffer tank 2 is within a safe range, improving the safety and reliability of the overall operation.

[0032] The diameter of the π-shaped pipe 301 is equal to the diameter of the outlet pipe of the substrate pump 1 .

[0033] The diameter of the π-shaped pipe 301 is equal to the diameter of the outlet pipe of the substrate pump 1, ensuring that when the substrate pump 1 is running, the liquid can flow smoothly from the substrate pump 1 into the black water buffer tank 2 without sudden changes in flow rate or pressure, thereby maintaining the flow efficiency and stability of the overall operation.

[0034] The π-shaped pipe 301 and the check valve 302 are made of corrosion-resistant materials.

[0035] The use of corrosion-resistant materials can not only extend the service life of the π-shaped pipe 301 and the check valve 302 and reduce the frequency of maintenance, but also maintain the reliability and safety of the overall operation, avoid leakage, blockage and other problems caused by corrosion, thereby ensuring that the device can work stably for a long time in harsh environments.

[0036] The check valve 302 is connected to the π-shaped pipe 301 through a flange.

[0037] When the check valve 302 needs to be inspected, cleaned, or replaced, the flange connection allows for faster assembly and disassembly, reducing downtime and improving system maintenance efficiency. Furthermore, the flange connection offers excellent sealing properties, effectively preventing leakage at the joint and ensuring stable operation and tightness of the system, thereby enhancing the reliability and service life of the device.

[0038] A sealing gasket is provided at the joint between the π-shaped pipe 301 and the check valve 302 .

[0039] Because this device processes corrosive and polluting black water, the presence of the sealing gasket effectively prevents liquid leakage from the joints, ensuring the tightness and safety of the entire operation. Furthermore, the sealing gasket mitigates wear on the joints caused by pressure fluctuations or vibrations, extending the service life of the pipe and check valve 302, and improving the reliability and operational stability of the device.

[0040] The implementation principle of the automatic siphon breaking device at the bottom pump outlet of the sedimentation tank of the utility model is:

[0041] The connection between the π-shaped pipe 301 and the check valve 302 automatically breaks the siphon. When the substrate pump 1 stops, the check valve 302 automatically opens, cutting off the siphon path and preventing the black water from flowing into the black water buffer tank 2 and avoiding overflow. When the substrate pump 1 starts, the check valve 302 automatically closes, restoring the normal flow path.

[0042] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. An automatic siphon breaking device at the bottom pump outlet of a sedimentation tank, characterized by: The automatic siphon breaking device at the outlet of the sedimentation tank bottom pump comprises a bottom pump (1), a black water buffer tank (2) and an automatic siphon breaking device (3); The automatic siphon breaking device comprises a π-shaped pipe (301) and a check valve (302); the π-shaped pipe (301) connects the outlet of the substrate pump (1) and the connecting pipe of the black water buffer tank (2); a check valve (302) is provided at the high point of the π-shaped pipe (301); and the check valve (302) is connected to the π-shaped pipe (301).

2. The automatic siphon breaking device at the bottom pump outlet of the sedimentation tank according to claim 1, characterized in that: The check valve (302) is a one-way opening structure. When the substrate pump (1) stops running, the check valve (302) automatically opens; when the substrate pump (1) starts running, the check valve (302) automatically closes.

3. The automatic siphon breaking device at the bottom pump outlet of the sedimentation tank according to claim 2, characterized in that: The high point of the π-shaped pipe (301) is higher than the overflow level of the black water buffer tank (2).

4. The automatic siphon breaking device at the bottom pump outlet of the sedimentation tank according to claim 3, characterized in that: The diameter of the π-shaped pipe (301) is equal to the diameter of the outlet pipe of the substrate pump (1).

5. The automatic siphon breaking device at the bottom pump outlet of the sedimentation tank according to claim 4, characterized in that: The π-shaped pipe (301) and the check valve (302) are made of corrosion-resistant materials.

6. The automatic siphon breaking device at the bottom pump outlet of the sedimentation tank according to claim 5, characterized in that: The check valve (302) is connected to the π-shaped pipe (301) via a flange.

7. The automatic siphon breaking device at the bottom pump outlet of the sedimentation tank according to claim 6, characterized in that: A sealing gasket is provided at the joint between the π-shaped pipe (301) and the check valve (302).

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