High-density sedimentation device for sewage treatment

Abstract

The utility model relates to sewage treatment technical field, and disclose a kind of sewage treatment high-density precipitation device, including primary precipitation tank, the fixed frame is fixedly arranged at primary precipitation tank top end, the hydraulic cylinder is fixedly installed at fixed frame top end, the piston rod bottom end of hydraulic cylinder is fixedly connected with filter plate. By the filter plate installed in the primary precipitation tank, and the sewage inlet is set below the filter plate, the first drain is set above the filter plate, so that the floating matter in water can be effectively intercepted in the primary precipitation tank when sewage is discharged after primary precipitation, to avoid the first drain blockage. When the filter plate needs cleaning, the water pump is started by the first controller, so that the water is pumped into the water pipe, and is sprayed onto the filter plate by the nozzle, so as to realize the backwashing effect of the filter plate, to ensure the filtering effect of the filter plate. This cleaning method replaces the traditional manual cleaning method, which is not only efficient and fast, but also saves labor.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a high-density sedimentation device for wastewater treatment. Background Technology

[0002] Currently, the demand for wastewater treatment is increasing, but traditional sedimentation devices suffer from low treatment efficiency, easy clogging of filter components, and cumbersome maintenance. Existing primary sedimentation often fails to completely remove suspended solids, affecting subsequent treatment results; manual cleaning of filter plates is time-consuming, labor-intensive, and incomplete. In secondary treatment, insufficient synergy between aeration and mixing leads to uneven oxygen diffusion and slow degradation of organic matter in sludge, making it difficult to meet the requirements of high-efficiency purification. Therefore, there is an urgent need for a high-density sedimentation device that integrates high-efficiency filtration, automatic cleaning, and enhanced aeration functions to improve wastewater treatment efficiency and automation levels.

[0003] Existing technology authorization announcement number CN210193492U discloses a stepped high-density sedimentation device for sewage treatment, including a primary sedimentation tank. An inlet pipe is fixedly sleeved on the top of one side of the primary sedimentation tank, and a first-stage sludge outlet funnel is fixedly installed at the bottom of the primary sedimentation tank. A first-stage sludge outlet funnel is fixedly sleeved inside, and a first-stage sludge outlet pipe is fixedly sleeved at the bottom of the other side of the primary sedimentation tank. This stepped high-density sedimentation device for sewage treatment, by setting up a primary sedimentation tank, connecting pipe, valves, and a secondary sedimentation tank, can perform stepped sedimentation of sewage during the sewage treatment process, facilitating the separation of large and small particulate impurities in the sewage, thereby improving the sewage sedimentation treatment effect. Simultaneously, the filter screen protects the connecting pipe during impurity separation, preventing clogging and ensuring the permeability of the connecting pipe.

[0004] Existing technologies, by setting up a primary sedimentation tank, connecting pipes, valves, and a secondary sedimentation tank, can achieve step-by-step sedimentation of wastewater during wastewater treatment. However, in practical use, this sedimentation device lacks measures to intercept suspended solids, relying solely on a filter screen installed on the outside of the connecting pipe. This easily leads to clogging of the connecting pipe inlet, and when the filter screen is clogged, it requires manual cleaning with tools or by diving into the pipe opening, which is time-consuming and labor-intensive. Therefore, we propose a high-density sedimentation device for wastewater treatment, which solves the problems of easy clogging and inconvenient cleaning of the filter screen in existing sedimentation devices, improving the practicality and ease of use of the sedimentation device. Utility Model Content

[0005] The purpose of this invention is to provide a high-density sedimentation device for sewage treatment, which solves the problems of easy clogging and inconvenient cleaning of the filter screen of existing sedimentation devices mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-density sedimentation device for sewage treatment, comprising a primary sedimentation tank, a fixed frame fixedly installed at the top of the primary sedimentation tank, a hydraulic cylinder fixedly installed at the top of the fixed frame, a filter plate fixedly connected to the bottom end of the piston rod of the hydraulic cylinder, a sewage inlet fixedly installed on one side of the primary sedimentation tank, and a first drain outlet installed on the other side, the sewage inlet being located below the filter plate, and the first drain outlet being located above the filter plate.

[0007] The fixed frame has a water spray pipe fixedly installed at its bottom end, and multiple nozzles are fixedly installed on the bottom side of the water spray pipe. A water pump is fixedly installed on the outer wall of the primary sedimentation tank. The output end of the water pump is connected to the input end of the water spray pipe through a water supply pipe. There are no fewer than six nozzles, which are evenly distributed on the bottom side of the water spray pipe. The spray range of the nozzles covers the top surface of the filter plate. Limiting grooves are opened on both sides of the filter plate. Limiting protrusions are fixedly installed on the inner wall of the primary sedimentation tank. The limiting grooves are slidably connected to the limiting protrusions.

[0008] The primary sedimentation tank is provided with a first drain outlet at the bottom, a first solenoid valve is fixedly installed on the outside of the first drain outlet, and a first controller is fixedly installed on the outer wall of the primary sedimentation tank. The first controller is electrically connected to the water pump and the hydraulic cylinder.

[0009] The first drain outlet is connected to a secondary sedimentation tank. An aeration disc is fixedly installed on the bottom surface of the secondary sedimentation tank. Multiple aeration holes are evenly arranged on the top surface of the aeration disc. An air pump is fixedly installed on the outer wall of the secondary sedimentation tank. The output end of the air pump is connected to the input end of the aeration disc through an air supply pipe.

[0010] The secondary sedimentation tank is equipped with a servo motor fixedly mounted at the top. The output end of the servo motor is fixedly connected to a stirring shaft via a coupling. A stirring blade is fixedly mounted at the bottom of the stirring shaft. The stirring blade has an oblique blade structure. The top of the stirring shaft is rotatably mounted on the top surface inside the secondary sedimentation tank.

[0011] The secondary sedimentation tank has a second drain outlet fixedly installed on one side, a second sewage outlet fixedly installed at the bottom of the secondary sedimentation tank, a second solenoid valve fixedly installed on the outside of the second sewage outlet, and a second controller fixedly installed on the outer wall of the secondary sedimentation tank. The second controller is electrically connected to the servo motor and the second solenoid valve.

[0012] This utility model discloses a high-density sedimentation device for wastewater treatment. By installing a filter plate inside a primary sedimentation tank, with the wastewater inlet located below the filter plate and the first drain outlet above it, the device effectively traps floating debris inside the primary sedimentation tank after the wastewater is discharged, preventing blockage of the first drain outlet. When the filter plate needs cleaning, a water pump is activated via a first controller, pumping water into the water supply pipe and spraying it onto the filter plate through nozzles. This achieves a backwashing effect, ensuring the filter plate's filtration function. This cleaning method replaces traditional manual cleaning, is not only highly efficient and quick but also saves labor. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the primary sedimentation tank structure of this utility model; Figure 3 This is a partial cross-sectional structural diagram of the present invention; Figure 4 This utility model Figure 2 A magnified structural diagram of A in the middle.

[0015] In the diagram: 1. Primary sedimentation tank; 2. Fixing frame; 3. Hydraulic cylinder; 4. Filter plate; 5. Sewage inlet; 6. First drain outlet; 7. Spray pipe; 8. Nozzle; 9. Water pump; 10. Water supply pipe; 11. Limiting groove; 12. Limiting protrusion; 13. First sewage outlet; 14. First solenoid valve; 15. First controller; 16. Secondary sedimentation tank; 17. Aeration disc; 18. Aeration hole; 19. Air pump; 20. Air supply pipe; 21. Servo motor; 22. Stirring shaft; 23. Stirring blades; 24. Second drain outlet; 25. Second sewage outlet; 26. Second solenoid valve; 27. Second controller. Detailed Implementation

[0016] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0017] Please see Figures 1-4This utility model provides a technical solution: a high-density sedimentation device for sewage treatment, including a primary sedimentation tank 1. A fixing frame 2 is fixedly installed at the top of the primary sedimentation tank 1, and a hydraulic cylinder 3 is fixedly installed at the top of the fixing frame 2. A filter plate 4 is fixedly connected to the bottom end of the piston rod of the hydraulic cylinder 3. A sewage inlet 5 is fixedly installed on one side of the primary sedimentation tank 1, and a first drain outlet 6 is installed on the other side. The sewage inlet 5 is located below the filter plate 4, and the first drain outlet 6 is located above the filter plate 4. A water spray pipe 7 is fixedly installed at the bottom end of the fixing frame 2, and multiple nozzles 8 are fixedly installed on the bottom side of the water spray pipe 7. A water pump 9 is fixedly installed on the outer wall of the primary sedimentation tank 1. The output end of the 9 is connected to the input end of the water spray pipe 7 through the water supply pipe 10. There are no fewer than six nozzles 8, which are evenly distributed on the bottom side of the water spray pipe 7. The spray range of the nozzles 8 covers the top surface of the filter plate 4. Limiting grooves 11 are opened on both sides of the filter plate 4. Limiting protrusions 12 are fixedly provided on the inner wall of the primary sedimentation tank 1. The limiting grooves 11 are slidably connected to the limiting protrusions 12. The bottom end of the primary sedimentation tank 1 is fixedly provided with a first sewage outlet 13. A first solenoid valve 14 is fixedly installed on the outside of the first sewage outlet 13. A first controller 15 is fixedly installed on the outer wall of the primary sedimentation tank 1. The first controller 15 is electrically connected to the water pump 9 and the hydraulic cylinder 3.

[0018] Wastewater is introduced into the primary sedimentation tank 1 through wastewater inlet 5. The filter plate 4 installed inside the primary sedimentation tank 1 effectively traps floating debris in the water after primary sedimentation, preventing blockage of the first drain outlet 6. When the filter plate 4 needs cleaning, the water pump 9 is activated via the first controller 15, pumping water into the water supply pipe 10 and spraying it onto the filter plate 4 through the nozzle 8, thus achieving a backwashing effect and ensuring the filtering function of the filter plate 4.

[0019] A secondary sedimentation tank 16 is connected to one end of the first drain outlet 6. An aeration disc 17 is fixedly installed on the bottom surface of the secondary sedimentation tank 16. Multiple aeration holes 18 are evenly arranged on the top surface of the aeration disc 17. An air pump 19 is fixedly installed on the outer wall of the secondary sedimentation tank 16. The output end of the air pump 19 is connected to the input end of the aeration disc 17 through an air supply pipe 20. A servo motor 21 is fixedly installed on the top of the secondary sedimentation tank 16. A stirring shaft 22 is fixedly connected to the output end of the servo motor 21 through a coupling. A stirring blade 23 is fixedly installed at the bottom of the stirring shaft 22. The stirring blade 23 has an oblique blade structure. The top of the stirring shaft 22 is rotatably installed on the top surface of the secondary sedimentation tank 16. A second drain outlet 24 is fixedly installed on one side of the secondary sedimentation tank 16. A second sewage outlet 25 is fixedly installed at the bottom of the secondary sedimentation tank 16. A second solenoid valve 26 is fixedly installed on the outside of the second sewage outlet 25. A second controller 27 is fixedly installed on the outer wall of the secondary sedimentation tank 16. The second controller 27 is electrically connected to the servo motor 21 and the second solenoid valve 26.

[0020] The oxygen pump 19 can be pumped into the aeration disc 17 and introduced into the sewage through the aeration hole 18. During the aeration process, the servo motor 21 drives the inclined blade structure to rotate continuously, which can form a vortex at the bottom of the secondary sedimentation tank 16, thereby promoting the full dispersion of oxygen, accelerating the degradation and transformation of organic matter in the sludge, and realizing the purification of sewage.

[0021] Working Principle: First, wastewater is discharged into the primary sedimentation tank 1 through the wastewater inlet 5 fixed on one side for sedimentation. Then, the first drain outlet 6 is opened to discharge the wastewater after initial sedimentation into the secondary sedimentation tank 16. Since the first drain outlet 6 is located above the filter plate 4, while the wastewater inlet 5 is located below the filter plate 4, the filter plate 4 can trap suspended solids in the wastewater, preventing them from flowing into the secondary sedimentation tank 16. After the wastewater enters the secondary sedimentation tank 16, the second controller 27 activates the air pump 19 and the servo motor 21. The servo motor 21 drives the stirring shaft 22 and the stirring blades to rotate, while the air pump 19 pumps oxygen into the aeration disc 17 and inputs it into the wastewater through the aeration holes 18. During the aeration process, the inclined blades of the stirring disc rotate continuously, creating a vortex at the bottom of the secondary sedimentation tank 16, which promotes the full dispersion of oxygen, accelerates the degradation and transformation of organic matter in the sludge, and achieves wastewater purification. After aeration is completed, the servo motor 21 and air pump 19 are turned off. After the sewage has settled completely, the second drain outlet 24 can be opened to discharge the treated water to the next treatment process. The hydraulic cylinder 3 installed at the top of the primary sedimentation tank 1 can raise or lower the filter plate 4, facilitating maintenance by staff. By connecting the input end of the water pump 9 to an external water source and starting the pump 9 via the first controller 15, water is pumped into the water supply pipe 10 and sprayed onto the filter plate 4 by the nozzle 8, achieving a backwashing effect on the filter plate 4 and ensuring its filtering function. This cleaning method replaces the traditional manual cleaning method, which is not only efficient and fast but also saves labor.

[0022] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A high-density sedimentation device for wastewater treatment, comprising a primary sedimentation tank (1), characterized in that: A fixed frame (2) is fixedly installed at the top of the primary sedimentation tank (1), and a hydraulic cylinder (3) is fixedly installed at the top of the fixed frame (2). A filter plate (4) is fixedly connected to the bottom end of the piston rod of the hydraulic cylinder (3). A sewage inlet (5) is fixedly installed on one side of the primary sedimentation tank (1), and a first drain outlet (6) is installed on the other side. The sewage inlet (5) is located below the filter plate (4), and the first drain outlet (6) is located above the filter plate (4). The bottom of the fixed frame (2) is fixedly installed with a water spray pipe (7), and multiple nozzles (8) are fixedly installed on the bottom side of the water spray pipe (7). A water pump (9) is fixedly installed on the outer wall of the primary sedimentation tank (1). The output end of the water pump (9) is connected to the input end of the water spray pipe (7) through a water supply pipe (10).

2. The high-density sedimentation device for wastewater treatment according to claim 1, characterized in that: There are at least six nozzles (8), which are evenly distributed on the bottom side of the water spray pipe (7). The spray range of the nozzles (8) covers the top surface of the filter plate (4). Limiting grooves (11) are opened on both sides of the filter plate (4). Limiting protrusions (12) are fixedly provided on the inner wall of the primary sedimentation tank (1). The limiting grooves (11) are slidably connected to the limiting protrusions (12).

3. The high-density sedimentation device for wastewater treatment according to claim 1, characterized in that: The primary sedimentation tank (1) is fixedly provided with a first drain outlet (13) at the bottom end. A first solenoid valve (14) is fixedly installed on the outside of the first drain outlet (13). A first controller (15) is fixedly installed on the outer wall of the primary sedimentation tank (1). The first controller (15) is electrically connected to the water pump (9) and the hydraulic cylinder (3).

4. The high-density sedimentation device for wastewater treatment according to claim 1, characterized in that: A secondary sedimentation tank (16) is connected to one end of the first drain outlet (6). An aeration disc (17) is fixedly installed on the bottom surface of the secondary sedimentation tank (16). A plurality of aeration holes (18) are evenly arranged on the top surface of the aeration disc (17). An air pump (19) is fixedly installed on the outer wall of the secondary sedimentation tank (16). The output end of the air pump (19) is connected to the input end of the aeration disc (17) through an air supply pipe (20).

5. A high-density sedimentation device for wastewater treatment according to claim 4, characterized in that: A servo motor (21) is fixedly installed at the top of the secondary sedimentation tank (16). The output end of the servo motor (21) is fixedly connected to a stirring shaft (22) via a coupling. A stirring blade (23) is fixedly installed at the bottom of the stirring shaft (22). The stirring blade (23) is an oblique blade structure. The top of the stirring shaft (22) is rotatably installed on the top surface inside the secondary sedimentation tank (16).

6. A high-density sedimentation device for wastewater treatment according to claim 5, characterized in that: A second drain outlet (24) is fixedly provided on one side of the secondary sedimentation tank (16), a second sewage outlet (25) is fixedly provided at the bottom of the secondary sedimentation tank (16), a second solenoid valve (26) is fixedly installed on the outside of the second sewage outlet (25), and a second controller (27) is fixedly installed on the outer wall of the secondary sedimentation tank (16). The second controller (27) is electrically connected to the servo motor (21) and the second solenoid valve (26).

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