Sewage treatment regulating tank device with liquid level control

Abstract

This utility model discloses a wastewater treatment equalization tank device with liquid level control, including a wastewater equalization tank, which comprises a mixing tank, a pumping zone, and a partition. The mixing tank and the pumping zone are separated by the partition. Both the mixing tank and the pumping zone are equipped with a stirring mechanism. Upper limit float switches and lower limit float switches are installed on the inner walls of both the mixing tank and the pumping zone. A water quality detection device and a pressure level gauge are respectively installed at the bottom of the mixing tank. A submersible pump and a pressure level gauge are respectively installed at the bottom of the pumping zone. A connecting pipe is installed on the partition. By setting up a mixing tank and a pumping zone, this utility model allows the control system to automatically open the butterfly valve in the connecting pipe when excessive wastewater flow and a rapid rise in the mixing tank level are detected, enabling the wastewater in the mixing tank to quickly flow into the pumping zone, achieving emergency diversion. The stirring mechanism, installed in both the mixing tank and the pumping zone, ensures uniform mixing of the wastewater, effectively eliminating water stratification.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to a wastewater treatment regulating tank device with liquid level control. Background Technology

[0002] Wastewater equalization tanks are the core pretreatment units in urban wastewater treatment plants and industrial wastewater treatment systems. Their main function is to regulate the water quality and quantity of wastewater from different sources and at different times, so as to prevent subsequent treatment processes from failing due to fluctuations in influent water quality or water volume. In actual operation, equalization tanks need to cope with complex conditions such as periodic discharges from industrial production and instantaneous peak flow in urban pipe networks. The accuracy and stability of their liquid level control directly affect the operating efficiency and treatment effect of the wastewater treatment system.

[0003] Traditional equalization tanks mostly use single-level monitoring devices, which can only provide simple alarms for high and low levels. When the sewage flow suddenly surges, the lack of real-time monitoring and prediction capabilities for level change trends prevents the automatic initiation of emergency response measures. Once the level exceeds the threshold, sewage overflow can easily occur, polluting the surrounding environment. If the level is too low, subsequent pumps will run dry, damaging equipment. Existing equalization tanks are mostly single-chamber structures, making sewage mixing and discharge relatively passive. When the flow rate is low, sewage mixing is insufficient, and uneven water quality affects subsequent treatment. When the flow rate is high, there is a lack of diversion and regulation mechanisms, and single-pump drainage is slow, making it difficult to lower the level in time. Therefore, there is an urgent need to design a sewage treatment equalization tank device with level control to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a wastewater treatment equalization tank device with liquid level control, so as to solve the above-mentioned shortcomings in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A wastewater treatment equalization tank device with liquid level control includes a wastewater equalization tank, which includes a mixing tank and a pumping zone. A partition is provided inside the wastewater equalization tank, and the mixing tank and the pumping zone are separated by the partition. A stirring mechanism is provided in both the mixing tank and the pumping zone. An upper limit float switch and a lower limit float switch are provided on the inner wall of both the mixing tank and the pumping zone.

[0007] The bottom of the mixing tank is equipped with a water quality testing device and a pressure level gauge 2, the bottom of the pumping zone is equipped with a submersible sewage pump and a pressure level gauge 1, and a connecting pipe is provided on the partition.

[0008] In a preferred embodiment of this utility model, the stirring mechanism consists of a stirring rod and a drive motor;

[0009] The stirring rod is connected to the output shaft of the drive motor, which is mounted on the top surface of the wastewater equalization tank.

[0010] In a preferred embodiment of this utility model, the upper limit float switch is disposed on the inner wall of the side near the top of the sewage regulating tank, and the lower limit float switch is disposed on the inner wall of the side near the bottom of the sewage regulating tank.

[0011] In a preferred embodiment of this utility model, a butterfly valve is provided on the connecting pipe, a transmission rod is provided on the butterfly valve, a servo motor is provided on the top outer wall of the sewage regulating tank, the output shaft of the servo motor is connected to the transmission rod, and the mixing tank and the lower part of the pumping zone are connected through the connecting pipe.

[0012] In a preferred embodiment of this utility model, the upper part of the partition is provided with several overflow ports, and the upper part of the mixing tank and the pumping zone are connected through the overflow ports.

[0013] In a preferred embodiment of this utility model, the top of the sewage equalization tank is provided with several observation windows, which are located at the top of the mixing tank and the pumping zone, respectively. An inlet is provided on one side of the sewage equalization tank, and a flow detector is installed on the pipe of the inlet.

[0014] In a preferred embodiment of this utility model, there are two submersible sewage pumps, and the outlet flange of each submersible sewage pump is connected to a sewage pipe, which passes through the top of the sewage regulating tank.

[0015] In the above technical solution, the wastewater treatment regulating tank device with liquid level control provided by this utility model has the following beneficial effects:

[0016] (1) By setting up a mixing tank and a pumping zone, when the sewage flow rate is too large and the liquid level in the mixing tank rises rapidly, the control system automatically opens the butterfly valve in the connecting pipe and uses the liquid level difference to make the sewage in the mixing tank flow into the pumping zone quickly, thereby achieving emergency diversion.

[0017] (2) By setting up a stirring mechanism, both the mixing tank and the pumping zone are equipped with a stirring mechanism to ensure that the sewage is mixed evenly, effectively eliminating the phenomenon of water stratification, so that the subsequent treatment process can quickly adapt to changes in water quality, and reducing the amount of treatment agents and treatment costs. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1This is a three-dimensional structural view of a sewage equalization tank provided for an embodiment of a sewage treatment equalization tank device with liquid level control according to this utility model.

[0020] Figure 2 This is a front view of the structure of a sewage equalization tank provided in an embodiment of a sewage treatment equalization tank device with liquid level control according to this utility model.

[0021] Figure 3 This is a top view of the wastewater equalization tank structure provided in an embodiment of a wastewater treatment equalization tank device with liquid level control according to this utility model.

[0022] Figure 4 This is a three-dimensional view of the internal structure of a sewage equalization tank provided in an embodiment of a sewage treatment equalization tank device with liquid level control according to this utility model.

[0023] 1. Wastewater equalization tank; 11. Mixing tank; 12. Pumping zone; 13. Baffle; 131. Overflow port; 2. Inlet; 21. Flow detector; 3. Observation window; 4. Sewage pipe; 5. Stirring mechanism; 51. Drive motor; 52. Stirring rod; 6. Upper limit float switch; 61. Lower limit float switch; 7. Connecting pipe; 71. Butterfly valve; 72. Transmission rod; 73. Servo motor; 8. Pressure level gauge one; 81. Pressure level gauge two; 9. Water quality testing device; 10. Submersible sewage pump. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0025] like Figure 1-4 As shown in the figure, the present invention provides a wastewater treatment regulating tank device with liquid level control, including a wastewater regulating tank 1. The wastewater regulating tank 1 includes a mixing tank 11 and a pumping zone 12. A partition 13 is provided inside the wastewater regulating tank 1. The mixing tank 11 and the pumping zone 12 are separated by the partition 13. A stirring mechanism 5 is provided in both the mixing tank 11 and the pumping zone 12. An upper limit float switch 6 and a lower limit float switch 61 are provided on the inner walls of both the mixing tank 11 and the pumping zone 12. A water quality detection device 9 and a pressure level gauge 81 are respectively provided at the bottom of the mixing tank 11. A submersible pump 10 and a pressure level gauge 8 are respectively provided at the bottom of the pumping zone 12. A connecting pipe 7 is provided on the partition 13.

[0026] In this embodiment, the sewage equalization tank 1 includes a mixing tank 11 and a pumping zone 12. The sewage equalization tank 1 adopts a dual-zone separation structure. A partition 13 is provided inside the sewage equalization tank 1. The mixing tank 11 and the pumping zone 12 are physically separated by the partition 13. The liquid level inside the mixing tank 11 is higher than the liquid level inside the pumping zone 12. Several overflow ports 131 are provided at the upper part of the partition 13. The overflow ports 131 are arranged horizontally at equal intervals on the upper part of the partition 13. When the water level in the mixing zone rises rapidly, it can enter the pumping zone 12 through the overflow ports 131 for diversion. The upper parts of the mixing tank 11 and the pumping zone 12 are connected through the overflow ports 131.

[0027] In this embodiment, an upper limit float switch 6 and a lower limit float switch 61 are provided on the inner walls of the mixing tank 11 and the pumping area 12. The upper limit float switch 6 and the lower limit float switch 61 are made of 316L stainless steel and equipped with anti-corrosion silicone sealant. They can work stably in strong acid and alkaline sewage environments and provide real-time alarm for high and low liquid levels and detection of liquid level information. The upper limit float switch 6 is located on the inner wall near the top of the sewage equalization tank 1, and the lower limit float switch 61 is located on the inner wall near the bottom of the sewage equalization tank 1.

[0028] Specifically, the bottom of the mixing tank 11 is equipped with a water quality detection device 9 and a pressure level gauge 81. The water quality detection device 9 integrates multiple parameter sensors such as pH, COD, and ammonia nitrogen, and automatically samples and analyzes every 5 minutes. The bottom of the pumping area 12 is equipped with a submersible sewage pump 10 and a pressure level gauge 8. The pressure level gauge 8 and the pressure level gauge 81 can detect changes in the liquid level in real time.

[0029] In this embodiment, both the mixing tank 11 and the pumping zone 12 are equipped with a stirring mechanism 5, which consists of a stirring rod 52 and a drive motor 51.

[0030] Specifically, the stirring rod 52 is connected to the output shaft of the drive motor 51, which is located on the top surface of the sewage equalization tank 1. The drive motor 51 adopts a variable frequency speed control design and can automatically adjust the stirring intensity according to the sewage flow rate and water quality.

[0031] In this embodiment, a connecting pipe 7 is provided on the partition 13. The connecting pipe 7 is made of a large-diameter seamless steel pipe and a butterfly valve 71 is provided on the connecting pipe 7. Under normal circumstances, the butterfly valve 71 is not fully open. A transmission rod 72 is provided on the butterfly valve 71. A servo motor 73 is provided on the top outer wall of the sewage equalization tank 1. The output shaft of the servo motor 73 is connected to the transmission rod 72. The mixing tank 11 and the lower part of the pumping zone 12 are connected through the connecting pipe 7. When encountering a flow surge, the servo motor 73 can drive the butterfly valve 71 to fully open through the transmission rod 72, so that the mixing tank 11 and the pumping zone 12 can be quickly connected, instantly improving the sewage diversion efficiency.

[0032] In this embodiment, several observation windows 3 are provided on the top of the sewage equalization tank 1. The observation windows 3 can not only observe the condition of the sewage equalization tank 1, but also serve as inlets and outlets, providing access for equipment maintenance. The observation windows 3 are located on the top of the mixing tank 11 and the pumping area 12, respectively. An inlet 2 is provided on one side of the sewage equalization tank 1. A flow detector 21 is installed on the pipe of the inlet 2. The flow detector 21 detects the water flow of the inlet 2 in real time, providing key data support for system adjustment.

[0033] In this embodiment, there are two submersible sewage pumps 10. The two submersible sewage pumps 10 adopt a working mode of one in use and one in standby with intelligent rotation. When the liquid level in the pumping area 12 reaches the upper limit, the two pumps automatically start at the same time. The outlet flange of the submersible sewage pump 10 is connected to the sewage pipe 4. The sewage pipe 4 passes through the top of the sewage equalization tank 1 and is connected to the subsequent treatment steps.

[0034] In this embodiment, the entire system achieves intelligent linkage through a PLC control system, enabling fully automated control of the entire process from liquid level monitoring and water quality testing to equipment start-up and shutdown.

[0035] Working steps: 1. Under normal circumstances, sewage enters the mixing tank 11 through the inlet 2, and is then stirred by the stirring mechanism 5 to make the water quality evenly distributed. Then, it enters the pumping area 12 through the connecting pipe 7, and is sent to the subsequent treatment process by the submersible sewage pump 10. The submersible sewage pump 10 operates alternately under normal working conditions to extend the equipment life.

[0036] 2. In case of emergencies, such as large volume and high concentration of sewage, when the sewage flow rate is detected to be too large and the liquid level in the mixing tank 11 rises rapidly, the control system automatically opens the butterfly valve 71 in the connecting pipe. The sewage in the mixing tank 11 is quickly diverted into the pumping area 12 by using the liquid level difference, thus achieving emergency diversion. At the same time, the two submersible sewage pumps 10 in the pumping area 12 are intelligently linked according to the liquid level and flow data, and both pumps start simultaneously to drain water.

[0037] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A wastewater treatment equalization tank device with liquid level control, comprising a wastewater equalization tank (1), characterized in that, The wastewater equalization tank (1) includes a mixing tank (11) and a pumping zone (12). A partition (13) is provided inside the wastewater equalization tank (1). The mixing tank (11) and the pumping zone (12) are separated by the partition (13). A stirring mechanism (5) is provided in both the mixing tank (11) and the pumping zone (12). An upper limit float switch (6) and a lower limit float switch (61) are provided on the inner walls of both the mixing tank (11) and the pumping zone (12). The bottom of the mixing tank (11) is equipped with a water quality testing device (9) and a pressure level gauge (81), the bottom of the pumping area (12) is equipped with a submersible pump (10) and a pressure level gauge (8), and a connecting pipe (7) is provided on the partition (13). A butterfly valve (71) is provided on the connecting pipe (7), and a transmission rod (72) is provided on the butterfly valve (71). A servo motor (73) is provided on the top outer wall of the sewage regulating tank (1). The output shaft of the servo motor (73) is connected to the transmission rod (72). The mixing tank (11) and the lower part of the pumping area (12) are connected through the connecting pipe (7). The wastewater regulating tank (1) has several observation windows (3) on its top. The observation windows (3) are located on the top of the mixing tank (11) and the pumping area (12), respectively. The wastewater regulating tank (1) has an inlet (2) on one side. A flow detector (21) is installed on the pipe of the inlet (2).

2. The wastewater treatment equalization tank device with liquid level control according to claim 1, characterized in that, The stirring mechanism (5) consists of a stirring rod (52) and a drive motor (51); The stirring rod (52) is connected to the output shaft of the drive motor (51), which is located on the top surface of the sewage equalization tank (1).

3. A wastewater treatment equalization tank device with liquid level control according to claim 2, characterized in that, The upper limit float switch (6) is located on the inner wall of the side near the top of the sewage regulating tank (1), and the lower limit float switch (61) is located on the inner wall of the side near the bottom of the sewage regulating tank (1).

4. A wastewater treatment equalization tank device with liquid level control according to claim 3, characterized in that, The partition (13) has several overflow ports (131) at the upper part, and the upper part of the mixing tank (11) and the pumping area (12) are connected through the overflow ports (131).

5. A wastewater treatment equalization tank device with liquid level control according to claim 4, characterized in that, There are two submersible sewage pumps (10). The outlet flange of the submersible sewage pump (10) is connected to a sewage pipe (4), which passes through the top of the sewage regulating tank (1).

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