A dual-valve coordinated control vertical flow sedimentation tank

Abstract

This utility model discloses a dual-valve coordinated control vertical flow sedimentation device, including a vertical flow sedimentation container, an electric inlet valve, an electric drain valve, a first water level sensor, a second water level sensor, and a controller. The electric inlet valve is fixedly installed on the inlet pipe of the vertical flow sedimentation container, and the electric drain valve is fixedly installed on the drain pipe of the vertical flow sedimentation container. The controller is electrically connected to the electric inlet valve, the electric drain valve, the second water level sensor, and the second water level sensor. The vertical flow sedimentation container includes a drain section and a weir assembly. The first water level sensor is fixedly installed inside the weir assembly, and the second water level sensor is fixedly installed on the inner wall of the drain section. This utility model achieves automated control of the sedimentation process through dual-valve coordinated control, improving water treatment efficiency and quality.

Description

Technical Field

[0001] This utility model relates to the field of control technology for recirculating aquaculture water treatment equipment, specifically a dual-valve coordinated control vertical flow sedimentation device. Background Technology

[0002] Vertical flow sedimentation tanks, which utilize gravity to separate solid particles from liquids, are widely used in aquaculture recirculating aquaculture systems. However, under current technological conditions, the inlet and outlet valves of these tanks are mostly independently controlled, lacking an effective coordinated adjustment mechanism. This affects sedimentation efficiency to some extent, leading to problems such as water agitation during initial inflow and outflow, and water waste during sludge discharge. Traditional control methods rely mainly on fixed flow rates or manual experience, making it difficult to dynamically match inflow and outflow rates according to the real-time operating status of the vertical flow sedimentation tank. Consequently, water consumption during sludge discharge is generally higher than actual demand. Furthermore, the lack of a real-time feedback mechanism for inflow and outflow rates results in significant inflow disturbance within the sedimentation tank, affecting the settling efficiency of solid particles. During backwashing, a large amount of clean water needs to be added, and the delayed drainage forces extended rinsing time, resulting in water waste. In addition, traditional vertical flow sedimentation tanks rely on manual experience to adjust inflow and sludge discharge cycles, making it impossible to promptly discharge sludge when water quality fluctuates (such as sudden changes in suspended solids concentration), thus affecting the stability of the effluent quality. Therefore, there is an urgent need for a vertical flow sedimentation tank that can achieve coordinated regulation of inlet and outlet valves and realize automated control in order to improve sedimentation efficiency and reduce water waste. Utility Model Content

[0003] One of the technical problems to be solved by this application is to overcome the defects of the above-mentioned related technologies and provide a dual-valve coordinated control vertical flow sedimentator to achieve dynamic balance of sewage discharge during the sedimentation process, reduce wastewater resources, and improve the system's water saving rate and operating efficiency.

[0004] The technical solution adopted by this utility model to solve the technical problem is as follows: a dual-valve coordinated control vertical flow sedimentator, including a vertical flow sedimentation container, characterized in that it further includes an electric inlet valve, an electric drain valve, a first water level sensor, a second water level sensor, and a controller. The electric inlet valve is fixedly installed on the inlet pipe of the vertical flow sedimentation container, and the electric drain valve is fixedly installed on the drain pipe of the vertical flow sedimentation container. The controller is electrically connected to the electric inlet valve, the electric drain valve, the second water level sensor, and the second water level sensor respectively. The vertical flow sedimentation container includes a drain section and a weir assembly forming an overflow zone. The first water level sensor is fixedly installed inside the weir assembly, and the second water level sensor is fixedly installed on the inner wall of the drain section.

[0005] Compared with related technologies, this utility model has the following advantages: 1. Significantly improved water saving rate: Through dynamic flow matching, the overall water saving rate is significantly improved compared with traditional vertical flow sedimentators. 2. Optimized sedimentation efficiency: Stable influent flow control greatly reduces the interference of solid particle settling and prevents the water flow from disturbing the particles after settling. 3. High degree of automation: No manual intervention is required; the entire process is automatically controlled through electric influent valves and electric drain valves, reducing operation and maintenance costs.

[0006] Preferably, the vertical flow sedimentation container further includes a barrel and a central pipe. The inlet pipe passes through the barrel and the central pipe. The sludge discharge section is located at the lower part of the barrel, and the diameter of the end connected to the inner wall of the barrel is larger than the diameter of the end away from the barrel. The central pipe is located inside the barrel. The inlet pipe passes through the central pipe and is fixed in the middle of the barrel. The inlet pipe and the central pipe cooperate with each other. The water to be treated first enters the central pipe. When the central pipe is full, it overflows into the space between the central pipe and the vertical flow sedimentation container. When the space between the central pipe and the vertical flow sedimentation container is full, it overflows into the weir assembly. The water flow first enters the central pipe, reducing the impact of the water flow on the sludge in the sludge discharge section and greatly improving the sedimentation stability.

[0007] Preferably, the first water level sensor is fixedly mounted on the annular connecting plate. Positioning the first water level sensor in the optimal location allows for better real-time data provision to the electric inlet valve and the electric drain valve, enabling them to open and close more promptly.

[0008] Preferably, the weir assembly includes an annular connecting plate and an annular baffle. The annular connecting plate is fixed around the outer periphery of the top of the barrel, and the annular baffle is fixed around the annular connecting plate. The annular baffle is provided with a water outlet. The barrel, the annular connecting plate, and the annular baffle are connected to form a water storage tank, allowing water to flow steadily out of the water outlet.

[0009] Preferably, the sewage discharge section has a funnel structure with a diameter that gradually decreases from top to bottom. This design not only facilitates the smooth discharge of sewage but also effectively prevents blockages during the discharge process, thereby improving the overall efficiency and reliability of the sewage system.

[0010] Preferably, the end of the water inlet pipe outside the barrel is inclined upwards, and the end of the water inlet pipe inside the central pipe is bent upwards. The water inlet pipe passes through both the barrel and the central pipe, fixing the central pipe inside the barrel. The partially upward-bent design reduces the impact of water flow on the central pipe, improving stability. The upward inclination of the end outside the barrel allows for a more stable water flow, preventing the accumulation of dirt.

[0011] Preferably, the drain pipe passes through the barrel body, and the end of the drain pipe inside the barrel body is bent upwards and connected to the outlet of the drain section away from the weir assembly. The upward bend of the drain pipe aligns the outlet of the drain section with the drain pipe on the same axis, greatly improving the rate of waste discharge.

[0012] Preferably, the valve body of the electric inlet valve is connected to and fixed to the inlet pipe, and the valve body of the electric drain valve is connected to and fixed to the drain pipe. The design of installing the electric inlet valve and the electric drain valve outside the tank allows workers to disassemble and assemble the tank without entering the tank, enabling quick assembly and disassembly. Attached Figure Description

[0013] Figure 1 This is a perspective view of the present invention;

[0014] Figure 2 This is a front sectional view of the present invention;

[0015] Figure 3 This is a left-side sectional view of the present invention;

[0016] Figure 4 This is a control diagram of the present invention.

[0017] Attached Figures: 1. Electric inlet valve; 2. Electric drain valve; 3. First water level sensor; 4. Second water level sensor; 5. Inlet pipe; 6. Drain pipe; 7. Annular connecting plate; 8. Annular baffle; 801. Outlet; 9. Tank body; 10. Central pipe; 11. Drainage section. Detailed Implementation

[0018] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0020] like Figures 1-4 As shown, a dual-valve coordinated control vertical flow sedimentator includes a vertical flow sedimentation container, an electric inlet valve 1, an electric drain valve 2, a first water level sensor 3, and a second water level sensor 4. The electric inlet valve 1 is fixedly installed on the inlet pipe 5 of the vertical flow sedimentation container, and the electric drain valve 2 is fixedly installed on the drain pipe 6 of the vertical flow sedimentation container. The vertical flow sedimentation container includes a weir assembly forming an overflow zone and a drain section 6. The first water level sensor 3 is fixedly installed inside the weir assembly, and the second water level sensor 4 is fixedly installed on the inner wall of the drain section 6.

[0021] In this embodiment, the vertical flow sedimentation container has a diameter of 60cm, an effective water depth of 80cm, and a designed processing flow rate of 8m³ / h. Both the electric inlet valve 1 and the electric drain valve 2 are electric butterfly valves (opening accuracy ±1%). The response speed of the first water level sensor 3 and the second water level sensor 4 is 20ms. During the inlet stage, the controller controls the electric inlet valve 1 to a small opening, while the electric drain valve 2 remains fully closed. During the stable operation stage, when the water level rises to the position of the first sensor, the electric inlet valve 1 remains slightly open for a period of time before the controller fully opens it, while the electric drain valve remains closed. During the sewage discharge stage, when a significant amount of sewage accumulates in the discharge section, the controller closes the electric inlet valve 1 and fully opens the electric drain valve 2. When the water level drops to the position of the second sensor, the electric drain valve 2 closes completely, the electric inlet valve 1 opens slightly, and the inlet stage restarts for the next cycle. This design utilizes a coordinated control mechanism between the electric inlet valve 1 and the electric drain valve 2, achieving significant water-saving effects. Compared to the traditional simultaneous inlet and outlet mode, closing the inlet reduces water waste during outlet discharge, resulting in a significant improvement in overall water-saving rate. Furthermore, the use of the vertical flow settler's own water level difference for flushing shortens the outlet discharge time. This design employs dynamic flow matching technology compared to traditional vertical flow settlers. Secondly, sedimentation efficiency is optimized: in the initial stage, the small opening of the electric inlet valve 1 reduces initial water inrush, improving the stability of sediment settling. Compared to traditional full-load inlet, the small opening of the electric inlet valve 1, through small-flow control, significantly reduces interference during sedimentation, effectively preventing disturbance of sediment by the water flow after settling. In addition, this system is highly automated, requiring no manual intervention. It achieves fully automatic control of the entire process through feedback from the first and second water level sensors 3 and electric inlet valve 1 and electric drain valve 2, thereby reducing operation and maintenance costs.

[0022] During operation, the water to be treated enters the central pipe 10 through the inlet pipe 5, and then flows downwards from the bottom of the central pipe 10 into the sewage discharge section. In the sewage discharge section, the water flow slows down, and suspended solids settle to the sewage discharge section 11 under gravity. The clean water continues to rise, first overflowing into the overflow area. When the water level in the overflow area exceeds the height of the lowest point of the outlet 801, the clean water finally flows out from the outlet 801. The first water level sensor 3 and the second water level sensor 4 monitor the water level in the overflow area and the sewage discharge section, respectively, and transmit the signals to the control system. The control system adjusts the opening of the electric inlet valve 1 and the electric sewage discharge valve 2 according to the water level signals, realizing coordinated control of the inflow and outflow of water, and ensuring the normal operation of the vertical flow sedimentation tank.

[0023] Furthermore, the vertical flow sedimentation container also includes a barrel body 9 and a central pipe 10. The water inlet pipe 5 passes through the barrel body 9 and the central pipe 10. The sewage discharge section 11 is located in the lower part of the barrel body 9, and the diameter of the end connected to the inner wall of the barrel body 9 is larger than the diameter of the end away from the weir assembly. The central pipe 10 is located inside the barrel body 9.

[0024] In this embodiment, the inlet pipe 5 and the central pipe 10 cooperate with each other. The water to be treated first enters the central pipe 10. When the central pipe 10 is full, it overflows into the space between the central pipe 10 and the vertical flow sedimentation container. When the space between the central pipe 10 and the vertical flow sedimentation container is full, it overflows into the weir assembly. The sludge discharge section 11 is located in the lower part of the tank body 9, and the diameter of the end connected to the inner wall of the tank body 9 is larger than the diameter of the end away from the tank body 9. The central pipe 10 is located in the middle of the tank body 9 and is fixed. The special design of the sludge discharge section 11 also makes sludge discharge more convenient and reduces the difficulty of cleaning.

[0025] Furthermore, the weir assembly includes an annular connecting plate 7 and an annular baffle 8. The annular connecting plate 7 is fixed around the outer periphery of the top of the barrel 9, and the annular baffle 8 is fixed around the annular connecting plate 7. The annular baffle 8 is provided with an outlet 801.

[0026] In this embodiment, the weir assembly includes an annular connecting plate 7 and an annular baffle 8. The annular connecting plate 7 is fixed around the outer periphery of the top of the barrel 9, and the annular baffle 8 is fixed around the mounting plate. The annular baffle 8 is provided with an outlet 801. The highest point of the outlet 801 is lower than the highest point of the annular baffle 8 and the barrel 9, while the highest point of the annular baffle 8 is higher than the highest point of the barrel 9. This design allows the treated clean water to flow out evenly from the outlet 801 of the annular baffle 8, ensuring the stability of the water quality.

[0027] Furthermore, the first water level sensor 3 is fixedly installed on the inner side of the connection between the annular connecting plate 7 and the annular baffle 8. The first water level sensor 3 is set in the optimal position, which can better provide real-time data to the electric inlet valve 1 and the electric drain valve 2, so that the opening and closing of the electric inlet valve 1 and the electric drain valve 2 are more timely.

[0028] In this embodiment, the first water level sensor 3 is fixedly installed on the inner wall of the weir assembly, specifically on the inner side of the connection between the annular connecting plate 7 and the annular baffle 8. The first water level sensor 3 is used to monitor the water level of the weir assembly. When the water level reaches a preset height, it can trigger corresponding control measures, such as adjusting the opening of the electric inlet valve 1.

[0029] Furthermore, the sewage discharge section 11 has a funnel structure, and its diameter gradually decreases in the direction away from the weir assembly.

[0030] In this embodiment, the sewage discharge section 11 is specially designed as a funnel-shaped structure, with its diameter gradually decreasing from the top to the bottom, forming a transitional shape from wide to narrow. This design not only facilitates the smooth flow and centralized discharge of sewage, but also effectively prevents sewage from stagnating and accumulating during the discharge process, thereby improving sewage discharge efficiency.

[0031] Furthermore, the end of the water inlet pipe 5 located outside the barrel 9 is inclined upwards, and the end of the water inlet pipe 5 located inside the central pipe 10 is bent upwards.

[0032] In this embodiment, the central pipe 10 is fixed to the middle of the tank body 9 via the water inlet pipe 5. The water inlet pipe 5 passes obliquely through the tank body 9 and the central pipe 10, allowing water to flow quickly. This causes dirt in the water to settle at the bottom of the water inlet pipe 5, preventing backflow of dirt that could clog the water inlet pipe and affect the operation of the electric water inlet valve 1. The upward bend of the water inlet pipe 5 reduces the impact of the water flow on the inner wall of the central pipe 10, and at the same time, the direction of the water flow is away from the drain section 6, reducing the impact of the water flow on dirt and improving the sedimentation efficiency of dirt.

[0033] Furthermore, the drain pipe 6 passes through the barrel 9, and the end of the drain pipe 6 located inside the barrel 9 is bent upward and connected to the opening at the end of the drain section 6 away from the weir assembly.

[0034] In this embodiment, the upward bend of the drain pipe 6 aligns the outlet of the drain section 11 with the drain pipe 6 on the same axis, allowing waste in the drain section 11 to directly enter the drain pipe 6, significantly improving the waste discharge rate. Furthermore, the lowest point of the tank body 9 exceeds the lowest points of the drain section 11 and the drain pipe 6, providing stable support for the vertical flow sedimentation container.

[0035] Furthermore, the valve body of the electric inlet valve 1 is connected to and fixed to the inlet pipe 5, and the valve body of the electric drain valve 2 is connected to and fixed to the drain pipe 6.

[0036] In this embodiment, the design of installing the electric inlet valve 1 and the electric drain valve 2 outside the tank body 9 allows workers to disassemble and assemble them without entering the tank body 9, enabling quick disassembly and assembly. The valve bodies are fixedly connected to the ports outside the tank body of the inlet pipe 5 and the drain pipe 6 via flange connections, improving the operational stability of the electric inlet valve and the electric drain valve 2.

[0037] Working principle:

[0038] During the water intake phase, the total time is 0-5 minutes, with the electric inlet valve at its smallest opening (flow rate 1.7 m³ / h). 3 / h), the electric drain valve closes, and the inlet pipe 5 slowly injects water to the optimal sedimentation level, i.e., the location of the second water level sensor 4; the electric inlet valve 1 continues to maintain the existing small flow rate to avoid affecting particulate matter settling, until the water level reaches the location of the first sensor. During the stable operation phase, the total time is 4 hours. When the water level rises to the location of the first sensor, the electric inlet valves are fully opened, while the electric drain valve 2 remains closed. The water level will rapidly rise, overflowing from the tank 9 and entering the weir assembly. The outlet 801 on the weir assembly discharges the water. During the sewage discharge phase, the total time is 1 minute. When the preset sewage discharge cycle is reached, the sewage discharge program is triggered. First, the electric inlet valve 1 is closed, and the electric drain valve 2 is fully opened, causing the water level to drop to the second water level sensor 4. Then, the electric drain valve 2 is closed, and the electric inlet valve 1 is opened to a small opening, entering the water intake phase. The water intake phase, stable operation phase, sewage discharge cycle, and the opening size of the electric inlet valve 1 and electric drain valve 2 can be adjusted according to the rate of dirt accumulation.

[0039] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A dual valve coordinated control vertical flow sedimentation basin comprising a vertical flow sedimentation vessel, characterized by, It also includes an electric inlet valve, an electric drain valve, a first water level sensor, a second water level sensor, and a controller. The electric inlet valve is fixedly installed on the inlet pipe of the vertical flow sedimentation container, and the electric drain valve is fixedly installed on the drain pipe of the vertical flow sedimentation container. The controller is electrically connected to the electric inlet valve, the electric drain valve, the second water level sensor, and the second water level sensor respectively. The vertical flow sedimentation container includes a drain section and a weir assembly that forms an overflow zone. The first water level sensor is fixedly installed inside the weir assembly, and the second water level sensor is fixedly installed on the inner wall of the drain section.

2. A dual valve coordinated control vertical flow precipitator according to claim 1, wherein, The vertical flow sedimentation container also includes a barrel and a central pipe. The water inlet pipe passes through the barrel and the central pipe. The sewage discharge section is located in the lower part of the barrel, and the diameter of the end connected to the inner wall of the barrel is larger than the diameter of the end away from the weir assembly. The central pipe is located in the barrel.

3. A dual valve coordinated control vertical flow precipitator according to claim 2, wherein, The weir assembly includes an annular connecting plate and an annular baffle. The annular connecting plate is fixed around the outer periphery of the top of the barrel, and the annular baffle is fixed around the annular connecting plate. The annular baffle is provided with a water outlet.

4. A dual valve coordinated control vertical flow precipitator according to claim 3, wherein, The first water level sensor is fixedly mounted on the annular connecting plate.

5. A dual valve coordinated control vertical flow precipitator according to claim 4, wherein, The sewage discharge section has a funnel structure, and its diameter gradually decreases in the direction away from the weir component.

6. A dual valve coordinated control vertical flow precipitator according to claim 2, wherein, The water inlet pipe passes through the barrel and the central pipe. The end of the water inlet pipe outside the barrel is inclined upward, and the end of the water inlet pipe inside the central pipe is bent upward.

7. A dual-valve synergistic control vertical flow sedimentator according to claim 2, characterized in that, The sewage pipe passes through the barrel body, and the end of the sewage pipe inside the barrel body is bent upwards and connected to the sewage outlet at the end of the sewage discharge section away from the weir assembly.

8. A dual valve coordinated control vertical flow precipitator according to claim 1, wherein, The valve body of the electric inlet valve is connected to and fixed to the inlet pipe, and the valve body of the electric drain valve is connected to and fixed to the drain pipe.

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