Sedimentation tank for sewage treatment

Abstract

The utility model provides a sedimentation tank for sewage treatment, which comprises a first-stage sedimentation tank, a second-stage sedimentation tank, a third-stage sedimentation tank, a communicating pipe, a main blow-off pipeline and a driving motor, the driving motor is mounted in the first-stage sedimentation tank, the second-stage sedimentation tank is arranged on the right side of the first-stage sedimentation tank, the third-stage sedimentation tank is arranged on the right side of the second-stage sedimentation tank, and the communicating pipe is communicated with the main blow-off pipeline. Communication pipes with equal specifications are arranged between the first-stage sedimentation tank and the second-stage sedimentation tank and between the second-stage sedimentation tank and the third-stage sedimentation tank, the problem that an original sedimentation tank for sewage treatment is poor in sedimentation effect is solved through the design, and the three sets of sedimentation tanks are used in a cascade mode to conduct sedimentation treatment on sewage, so that the sewage treatment efficiency is improved. The sewage is stirred by the stirring blades, so that the mixing of the sewage and the precipitant is promoted, the precipitation efficiency is improved, the precipitated sludge is discharged outwards through the secondary blow-off pipeline and the main blow-off pipeline, and the use is simple and convenient.

Description

Technical Field

[0001] This utility model is a sedimentation tank for sewage treatment, belonging to the technical field of sedimentation tanks for sewage treatment. Background Technology

[0002] A sedimentation tank is a structure that uses sedimentation to remove suspended solids from water. It is a water purification device that uses the natural sedimentation or coagulation sedimentation of water to remove suspended solids. Sedimentation tanks are classified into horizontal sedimentation tanks and vertical sedimentation tanks according to the direction of water flow. The sedimentation effect depends on the water flow rate and the residence time of the water in the sedimentation tank.

[0003] Chinese patent CN117088484B proposes a sedimentation tank for wastewater treatment. This tank involves stirring up the sludge settled at the bottom, mixing it with the wastewater, and then pumping the mixture out. The sludge-water mixture is then sprayed onto a sludge filter screen for filtration, reducing wastewater treatment steps. However, stirring up the bottom sludge causes some of it to re-mix with the upper water, affecting the sedimentation effect and resulting in poor practicality. There is an urgent need for a sedimentation tank for wastewater treatment to solve these problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a sedimentation tank for wastewater treatment, thereby solving the problems mentioned in the background section. This invention has a reasonable structure, using three sets of sedimentation tanks in cascade to treat wastewater, and agitating blades to stir the wastewater, thereby promoting the mixing of wastewater and precipitant to improve sedimentation efficiency. The settled sludge is discharged to the outside through secondary and main sewage pipes, making it simple and convenient to use.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sedimentation tank for wastewater treatment, comprising a primary sedimentation tank, a secondary sedimentation tank, a tertiary sedimentation tank, a control panel, a connecting pipe, a main sewage pipe, a drive motor, a first rotating frame, and stirring blades. The control panel is installed on the front end of the primary sedimentation tank. The drive motor is installed inside the primary sedimentation tank. The first rotating frame is rotatably arranged inside the primary sedimentation tank, relatively close to the drive motor. Stirring blades are arranged inside the first rotating frame. The secondary sedimentation tank is located to the right of the primary sedimentation tank, and the tertiary sedimentation tank is located to the right of the secondary sedimentation tank. Connecting pipes of equal specifications are provided between the primary and secondary sedimentation tanks, and between the secondary and tertiary sedimentation tanks.

[0006] Furthermore, an inlet is provided on the left side of the primary sedimentation tank, an outlet is provided on the right side of the tertiary sedimentation tank, filter plates are provided at both ends of the connecting pipe, and baffles are provided inside the primary, secondary, and tertiary sedimentation tanks.

[0007] Furthermore, the lower end faces of the primary sedimentation tank, the secondary sedimentation tank, and the tertiary sedimentation tank are all provided with support legs, and the lower ends of the support legs are all located on the same horizontal plane. The front end faces of the primary sedimentation tank, the secondary sedimentation tank, and the tertiary sedimentation tank are all provided with observation windows.

[0008] Furthermore, the drive motor and other specifications are provided in three sets, and the primary sedimentation tank, secondary sedimentation tank and tertiary sedimentation tank are all equipped with fixed frames, and the drive motor is installed inside the fixed frames.

[0009] Furthermore, the output end of the drive motor is fitted with a motor shaft, the drive motor is fixedly connected to the first rotating frame through the motor shaft, and the input end of the drive motor is electrically connected to the control panel through a wire.

[0010] Furthermore, a second rotating frame is provided inside the primary sedimentation tank on the side relatively away from the first rotating frame, and a rotating connector is embedded in the inner wall of the primary sedimentation tank. The second rotating frame and the rotating connector are rotatably connected by a rotating shaft.

[0011] Furthermore, the stirring blades are fixedly arranged between the first rotating frame and the second rotating frame, and three sets of secondary sewage pipes are equally spaced on the upper end face of the main sewage pipe. The main sewage pipe is connected to the interior of the primary sedimentation tank, the secondary sedimentation tank and the tertiary sedimentation tank through the secondary sewage pipes.

[0012] Furthermore, the primary sedimentation tank, the secondary sedimentation tank, and the tertiary sedimentation tank are all equipped with ramps that slope toward the secondary sewage discharge pipes, and all three sets of secondary sewage discharge pipes are equipped with shut-off valves.

[0013] The beneficial effects of this utility model are as follows: This utility model provides a sedimentation tank for sewage treatment. Because it includes a primary sedimentation tank, a secondary sedimentation tank, a tertiary sedimentation tank, a first rotating frame, stirring blades, and a main sewage discharge pipe, the user adds a precipitant to the sewage to be treated and introduces it into the primary sedimentation tank through the inlet. The first and second rotating frames drive the stirring blades to rotate, stirring the upper layer of sewage, thereby promoting thorough mixing of the sewage and precipitant and accelerating the reaction between the sewage and precipitant. The user can observe the sedimentation situation inside the primary, secondary, and tertiary sedimentation tanks through the observation window. When the sediment approaches the lower end of the baffle, the corresponding shut-off valve can be opened, allowing the bottom sludge sediment to be discharged through the secondary and main sewage discharge pipes under the guidance of the slope and the pressure of the upper water layer. Attached Figure Description

[0014] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0015] Figure 1 This is a schematic diagram of the structure of a sedimentation tank for sewage treatment according to the present invention;

[0016] Figure 2 This is a structural schematic diagram of a sedimentation tank for wastewater treatment according to this utility model from another perspective;

[0017] Figure 3 This is a partial cross-sectional view of a sedimentation tank for wastewater treatment according to the present invention.

[0018] Figure 4 This is a partial cross-sectional view of a sedimentation tank for wastewater treatment according to the present invention.

[0019] Figure 5 This is a partial structural schematic diagram of a sedimentation tank for wastewater treatment according to the present invention;

[0020] Figure 6 This is a schematic diagram of the structure of the stirring blades in a sedimentation tank for sewage treatment according to the present invention;

[0021] In the diagram: 1- Primary sedimentation tank, 11- Support leg, 12- Observation window, 13- Inlet, 14- Slope, 15- Baffle, 2- Secondary sedimentation tank, 3- Tertiary sedimentation tank, 31- Outlet, 4- Control panel, 5- Connecting pipe, 51- Filter plate, 6- Main sewage pipe, 61- Secondary sewage pipe, 62- Shut-off valve, 7- Drive motor, 71- Fixing frame, 72- Motor shaft, 8- First rotating frame, 81- Second rotating frame, 82- Rotating connector, 83- Rotating shaft, 9- Agitator blade. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] Please see Figures 1-6 This utility model provides a technical solution: a sedimentation tank for sewage treatment, including a primary sedimentation tank 1, a secondary sedimentation tank 2, a tertiary sedimentation tank 3, a control panel 4, a connecting pipe 5, a main sewage discharge pipe 6, a drive motor 7, a first rotating frame 8, and stirring blades 9. The control panel 4 is installed on the front end of the primary sedimentation tank 1, the drive motor 7 is installed inside the primary sedimentation tank 1, the first rotating frame 8 is rotatably arranged inside the primary sedimentation tank 1 on the side relatively close to the drive motor 7, and the stirring blades 9 are arranged inside the first rotating frame 8. The secondary sedimentation tank 2 is arranged to the right of the primary sedimentation tank 1, and the tertiary sedimentation tank 3 is arranged to the right of the secondary sedimentation tank 2. Connecting pipes 5 of equal specifications are arranged between the primary sedimentation tank 1 and the secondary sedimentation tank 2, and between the secondary sedimentation tank 2 and the tertiary sedimentation tank 3. This design solves the problem of poor sedimentation effect of the original sewage treatment sedimentation tank.

[0024] As the first embodiment of this utility model: an inlet 13 is provided on the left side of the primary sedimentation tank 1, an outlet 31 is provided on the right side of the tertiary sedimentation tank 3, filter plates 51 are provided at both ends of the connecting pipe 5, baffles 15 are provided inside the primary sedimentation tank 1, the secondary sedimentation tank 2 and the tertiary sedimentation tank 3, the baffles 15 can reduce the impact of the stirring blades 9 on the bottom sediment when stirring the sewage, and prevent the stirring blades 9 from stirring the sediment. Support legs 11 are provided on the lower end face of the primary sedimentation tank 1, the secondary sedimentation tank 2 and the tertiary sedimentation tank 3, and the lower end of the support legs 11 is located on the same horizontal plane. Observation windows 12 are provided on the front end face of the primary sedimentation tank 1, the secondary sedimentation tank 2 and the tertiary sedimentation tank 3, so that the sedimentation situation inside the primary sedimentation tank 1, the secondary sedimentation tank 2 and the tertiary sedimentation tank 3 can be easily observed.

[0025] There are three sets of drive motors 7, etc. The primary sedimentation tank 1, the secondary sedimentation tank 2 and the tertiary sedimentation tank 3 are all equipped with fixed frames 71. The drive motors 7 are installed inside the fixed frames 71. The output end of the drive motors 7 is clamped with a motor shaft 72. The drive motors 7 are fixedly connected to the first rotating frame 8 through the motor shaft 72. The input end of the drive motors 7 is electrically connected to the control panel 4 through a wire. The drive motors 7 can drive the first rotating frame 8 to rotate through the motor shaft 72. The control panel 4 can control the opening and closing of the drive motors 7. The secondary rotating frame 81 is set on the side of the primary sedimentation tank 1 that is relatively far away from the first rotating frame 8. The inner wall of the primary sedimentation tank 1 is embedded with a rotating connector 82. The secondary rotating frame 81 and the rotating connector 82 are rotatably connected through a rotating shaft 83. The primary rotating frame 8 and the secondary rotating frame 81 can drive the stirring blades 9 to rotate.

[0026] The stirring blades 9 are fixedly installed between the first rotating frame 8 and the second rotating frame 81. Three sets of secondary sewage pipes 61 are evenly spaced on the upper end face of the main sewage pipe 6. The main sewage pipe 6 is connected to the interior of the primary sedimentation tank 1, the secondary sedimentation tank 2 and the tertiary sedimentation tank 3 through the secondary sewage pipes 61. The secondary sewage pipes 61 can discharge the sediment at the bottom of the primary sedimentation tank 1, the secondary sedimentation tank 2 and the tertiary sedimentation tank 3. The primary sedimentation tank 1, the secondary sedimentation tank 2 and the tertiary sedimentation tank 3 are all equipped with ramps 14. The ramps 14 are inclined towards the secondary sewage pipes 61 and can guide the internal sediment to be discharged. The three sets of secondary sewage pipes 61 are all equipped with shut-off valves 62. The shut-off valves 62 can control the opening and closing of the secondary sewage pipes 61.

[0027] As a second embodiment of this utility model: the user adds a flocculant to the wastewater to be treated and introduces it into the primary sedimentation tank 1 through the inlet 13. The wastewater mixed with the flocculant settles in the primary sedimentation tank 1, and sludge and other sediments fall and settle at the bottom of the primary sedimentation tank 1. The water after preliminary sedimentation then enters the secondary sedimentation tank 2 through the connecting pipe 5 for secondary sedimentation, and then enters the tertiary sedimentation tank 3 in the same way for tertiary sedimentation. Finally, it is discharged out through the outlet 31. During the sedimentation process, the control panel 4 can control the drive motor 7 to start. The drive motor 7 drives the first rotating frame 8 to rotate through the motor shaft 72. The first rotating frame 8 and the second rotating frame 81 The stirring blades 9 rotate and agitate the upper layer of sewage, thereby promoting the full mixing of sewage and precipitant and accelerating the reaction between sewage and precipitant. Due to the setting of baffle 15, the stirring of the stirring blades 9 can be prevented from affecting the sediment at the bottom and prevent the sediment from turning up and affecting the sedimentation effect. The design of filter plate 51 can block floating objects. Users can observe the sedimentation situation inside the primary sedimentation tank 1, secondary sedimentation tank 2 and tertiary sedimentation tank 3 through observation window 12. When the sediment is close to the lower end of baffle 15, the corresponding shut-off valve 62 can be opened, so that the bottom sludge sediment can be discharged through the secondary sewage pipe 61 and the main sewage pipe 6 under the guidance of slope 14 and the action of upper water pressure.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A sewage treatment sedimentation tank, comprising a primary sedimentation tank, a secondary sedimentation tank, a tertiary sedimentation tank, a control panel, a communication pipe, a main sewage pipe, a driving motor, a first rotating frame and stirring blades, characterized in that: A control panel is installed on the front end of the primary sedimentation tank. A drive motor is installed inside the primary sedimentation tank. A first rotating frame is rotatably arranged inside the primary sedimentation tank on the side relatively close to the drive motor. A stirring blade is arranged inside the first rotating frame. A secondary sedimentation tank is arranged to the right of the primary sedimentation tank. A tertiary sedimentation tank is arranged to the right of the secondary sedimentation tank. Connecting pipes of equal specifications are arranged between the primary sedimentation tank and the secondary sedimentation tank, as well as between the secondary sedimentation tank and the tertiary sedimentation tank.

2. The sedimentation tank for sewage treatment according to claim 1, characterized in that: The primary sedimentation tank has an inlet on the left side, the tertiary sedimentation tank has an outlet on the right side, filter plates are installed at both ends of the connecting pipe, and baffles are installed inside the primary, secondary, and tertiary sedimentation tanks.

3. The sedimentation tank for sewage treatment according to claim 1, characterized in that: The lower end faces of the primary sedimentation tank, secondary sedimentation tank, and tertiary sedimentation tank are all provided with support legs, and the lower ends of the support legs are all located on the same horizontal plane. The front end faces of the primary sedimentation tank, secondary sedimentation tank, and tertiary sedimentation tank are all provided with observation windows.

4. The sedimentation tank for sewage treatment according to claim 1, characterized in that: The drive motors are provided in three sets, and the primary sedimentation tank, secondary sedimentation tank and tertiary sedimentation tank are all equipped with fixed frames, with the drive motors installed inside the fixed frames.

5. The sedimentation tank for sewage treatment according to claim 1, characterized in that: The output end of the drive motor is fitted with a motor shaft, and the drive motor is fixedly connected to the first rotating frame through the motor shaft. The input end of the drive motor is electrically connected to the control panel through a wire.

6. The sedimentation tank for sewage treatment according to claim 1, characterized in that: A second rotating frame is provided inside the primary sedimentation tank on the side relatively away from the first rotating frame. A rotating connector is embedded in the inner wall of the primary sedimentation tank. The second rotating frame and the rotating connector are rotatably connected by a rotating shaft.

7. A sedimentation tank for sewage treatment according to claim 6, characterized in that: The stirring blades are fixedly installed between the first rotating frame and the second rotating frame. Three sets of secondary sewage pipes are equally spaced on the upper surface of the main sewage pipe. The main sewage pipe is connected to the interior of the primary sedimentation tank, the secondary sedimentation tank and the tertiary sedimentation tank through the secondary sewage pipes.

8. A sedimentation tank for wastewater treatment according to claim 7, characterized in that: The primary sedimentation tank, secondary sedimentation tank, and tertiary sedimentation tank are all equipped with ramps that slope towards the secondary sewage discharge pipes. All three sets of secondary sewage discharge pipes are equipped with shut-off valves.

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