A sedimentation tank device for municipal sewage treatment

Abstract

The utility model relates to city sewage treatment technical field, concretely disclose a kind of sedimentation tank devices of city sewage treatment, including sedimentation tank, the inside of the sedimentation tank is provided with primary flow stabilizing equipment and secondary flow stabilizing equipment;The primary flow stabilizing equipment includes the settling tank being set in the inside of sedimentation tank, the upper portion of the settling tank is provided with annular flow guide pipe, the outer wall of the annular flow guide pipe is connected with multiple shunt pipes that distribute evenly, the outer wall of the annular flow guide pipe is connected with water inlet pipe;Through annular flow guide pipe shunt and radial water distribution pipe network constitute primary flow stabilizing system, convert into multidirectional uniform water distribution with concentrated water inlet, completely eliminate turbulent flow and short flow caused by single-point impact;Adjustable sleeve pipe flow stabilizing mechanism realizes secondary dynamic regulation and control, pass through rotating screw rod drive universal ball mechanism, the coincidence degree of through hole and flow stabilizing hole is accurately adjusted, makes overflow velocity stable, above-mentioned, reach the purpose of improving sedimentation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of urban sewage treatment technology, and specifically discloses a sedimentation tank device for urban sewage treatment. Background Technology

[0002] In urban wastewater treatment systems, sedimentation tanks are key equipment for achieving solid-liquid separation, and their operating efficiency directly affects the effluent quality and the load on subsequent treatment units.

[0003] Existing sedimentation tanks mostly use single-point or centralized inlet water, with the water flow directly impacting the tank body. This easily creates short-circuit or eddies within the tank, leading to sludge floating and insufficient settling time. For example, in horizontal flow sedimentation tanks, excessively high local flow velocities often occur near the inlet, disrupting the sludge settling environment. In vertical flow sedimentation tanks, uneven inlet water distribution can cause turbulent flow in the central area, affecting overall separation efficiency.

[0004] When influent flow rate and suspended solids concentration fluctuate, traditional sedimentation tanks struggle to adjust operating parameters in real time. For example, during heavy rain, a sudden increase in influent load can lead to increased effluent turbidity if the flow stabilization device cannot adaptively adjust. Therefore, a sedimentation tank device for urban wastewater treatment is needed to address these issues. Utility Model Content

[0005] This utility model proposes a sedimentation tank device for urban sewage treatment. It forms a primary flow stabilization system through a ring-shaped diversion pipe and a radial water distribution network, and achieves secondary dynamic control through an adjustable sleeve flow stabilization mechanism, thereby improving sedimentation efficiency.

[0006] This utility model is implemented as follows: a sedimentation tank device for urban sewage treatment includes a sedimentation tank, and the sedimentation tank is equipped with a primary flow stabilizing device and a secondary flow stabilizing device. The primary flow stabilization device includes a settling tank installed inside the sedimentation tank, an annular guide pipe installed above the settling tank, a plurality of evenly distributed branch pipes connected to the outer wall of the annular guide pipe, and an inlet pipe connected to the outer wall of the annular guide pipe. The secondary flow stabilization device includes multiple through holes arranged in a ring array through the outer wall of the sedimentation tank. An annular sleeve is fitted onto the upper end of the sedimentation tank. Multiple flow stabilization holes are opened through the outer wall of the annular sleeve. The positions of the multiple flow stabilization holes correspond to the positions of the multiple through holes. A drive rod is fixedly connected to the upper end of the annular sleeve. A U-shaped plate is fixedly connected to the outer wall of the sedimentation tank. An auxiliary block is rotatably connected inside the U-shaped plate. A threaded rod is threaded through and threaded onto the outer wall of the auxiliary block. The front end of the threaded rod is movably connected to the drive rod through a hinge seat.

[0007] As a preferred embodiment of the sedimentation tank device for urban sewage treatment according to this utility model, a conveying pipe is connected through and fixedly connected to the outer wall of the sedimentation tank, the lower end of the sedimentation tank is connected to the conveying pipe, an installation shell is fixedly connected to the left end of the conveying pipe, a motor is installed inside the installation shell, and the output end of the motor is connected through the installation shell and fixedly connected to a spiral rod located inside the conveying pipe.

[0008] In a preferred embodiment of the sedimentation tank device for urban sewage treatment according to this utility model, the positions of the plurality of flow stabilizing holes correspond to the positions of the plurality of through holes.

[0009] In a preferred embodiment of the sedimentation tank device for urban sewage treatment according to this utility model, the lower ends of the plurality of diversion pipes are all inclined toward the sedimentation tank.

[0010] As a preferred embodiment of the sedimentation tank device for urban sewage treatment according to this utility model, a turbidity sensor and a dissolved oxygen sensor are respectively installed on the upper and lower parts of the inner wall of the sedimentation tank, and a controller is fixedly installed on the outer wall of the sedimentation tank. The controller is electrically connected to the turbidity sensor, the dissolved oxygen sensor, and the motor.

[0011] As a preferred embodiment of the sedimentation tank device for urban sewage treatment according to this utility model, the outer wall of the inlet pipe is fixedly connected to an mounting plate that is fixedly connected to the upper end face of the sedimentation tank.

[0012] As a preferred embodiment of the sedimentation tank device for urban sewage treatment according to this utility model, a shut-off valve is installed at the right end of the conveying pipe.

[0013] The beneficial effects of this utility model are: (1) A primary flow stabilization system is formed by diverting water through a ring-shaped guide pipe and a radial water distribution network, which transforms the concentrated water intake into multi-directional uniform water distribution and completely eliminates turbulence and short-circuiting caused by single-point impact. (2) The adjustable sleeve flow stabilizing mechanism realizes two-stage dynamic control. By rotating the threaded rod to drive the universal ball mechanism, the overlap between the through hole and the flow stabilizing hole is precisely adjusted to stabilize the flow rate. In summary, this achieves the goal of improving sedimentation efficiency. Attached Figure Description

[0014] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0015] Figure 1 This is an overall structural diagram of a sedimentation tank device for urban sewage treatment according to this utility model.

[0016] Figure 2 This is a top view of the structure of this utility model.

[0017] Figure 3 This is a partial cross-sectional view of the present invention; Figure 4 This is a structural diagram of the annular sleeve of this utility model; Figure 5 This is a partial structural diagram of the present invention.

[0018] The markings in the diagram are: 1. Sedimentation tank; 2. Mounting plate; 3. Annular guide pipe; 4. Diversion pipe; 5. Drive rod; 6. Auxiliary block; 7. U-shaped plate; 8. Threaded rod; 9. Annular sleeve; 10. Sedimentation tank; 11. Flow stabilizing hole; 12. Through hole; 13. Conveying pipe; 14. Motor; 15. Screw rod; 16. Shut-off valve; 17. Mounting shell; 18. Inlet pipe; 19. Turbidity sensor; 20. Dissolved oxygen sensor. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0020] Please see Figure 1-5 A sedimentation tank device for urban sewage treatment includes a sedimentation tank 1, and the sedimentation tank 1 is equipped with a primary flow stabilizing device and a secondary flow stabilizing device. The primary flow stabilization device includes a settling tank 10 installed inside the settling tank 1. An annular guide pipe 3 is installed above the settling tank 10. Multiple evenly distributed diversion pipes 4 are connected to the outer wall of the annular guide pipe 3. An inlet pipe 18 is connected to the outer wall of the annular guide pipe 3. The secondary flow stabilization device includes multiple through holes 12 arranged in a ring array through the outer wall of the sedimentation tank 10. An annular sleeve 9 is sleeved on the upper end of the sedimentation tank 10. Multiple flow stabilization holes 11 are opened through the outer wall of the annular sleeve 9. The positions of the multiple flow stabilization holes 11 correspond to the positions of the multiple through holes 12. A drive rod 5 is fixedly connected to the upper end of the annular sleeve 9. A U-shaped plate 7 is fixedly connected to the outer wall of the sedimentation tank 1. An auxiliary block 6 is rotatably connected inside the U-shaped plate 7. A threaded rod 8 is threaded through and threaded to the outer wall of the auxiliary block 6. The front end of the threaded rod 8 is movably connected to the drive rod 5 through a hinge seat.

[0021] In this embodiment, urban sewage flows into the annular guide pipe 3 through the inlet pipe 18. Due to the design of the annular guide pipe 3, the sewage can be initially dispersed within the pipe. Then, the sewage flows to the sedimentation tank 10 through multiple evenly distributed diversion pipes 4 connected to the outer wall of the annular guide pipe 3. The multiple diversion pipes 4 evenly introduce the sewage into the sedimentation tank 10, avoiding direct impact of water flow on the tank body caused by single-point or centralized water inflow, reducing the formation of short-circuit and eddies, playing a primary role in stabilizing the flow, and creating a relatively stable water flow environment for the subsequent sedimentation process. After entering the sedimentation tank 10, the wastewater flows out through the through holes 12 arranged in a ring array on the outer wall of the sedimentation tank 10. An annular sleeve 9 is fitted onto the upper end of the sedimentation tank 10, with multiple flow-stabilizing holes 11 on the annular sleeve 9 corresponding to the positions of the through holes 12. When it is necessary to adjust the water flow, the operator can rotate the threaded rod 8. Since the threaded rod 8 is threadedly connected to the auxiliary block 6, rotating the threaded rod 8 will cause the drive rod 5 to rotate the annular sleeve 9. By adjusting the position of the annular sleeve 9, the overlapping area of ​​the flow-stabilizing holes 11 and the through holes 12 can be changed, thereby further regulating the flow rate and velocity of the wastewater flowing out of the sedimentation tank 10, achieving secondary flow stabilization, making the water flow in the sedimentation tank 1 more stable, and facilitating sludge sedimentation.

[0022] As a technical optimization of this utility model, a conveying pipe 13 is connected to the outer wall of the sedimentation tank 1 through and fixedly connected to it. The lower end of the sedimentation tank 10 is connected to the conveying pipe 13. An installation shell 17 is fixedly connected to the left end of the conveying pipe 13. A motor 14 is installed inside the installation shell 17. The output end of the motor 14 passes through the installation shell 17 and is fixedly connected to a spiral rod 15 located inside the conveying pipe 13.

[0023] In this embodiment: the motor 14 starts and drives the screw rod 15 inside the conveying pipe 13 to rotate, which transports the sludge settled at the bottom out, ensuring the timely discharge of sludge in the sedimentation tank 1 and preventing excessive sludge accumulation from affecting the sedimentation effect.

[0024] As a technical optimization of this utility model, the positions of the multiple flow stabilizing holes 11 correspond to the positions of the multiple through holes 12.

[0025] In this embodiment, the flow rate of water through the through holes 12 is controlled by controlling the overlapping area of ​​the multiple flow stabilizing holes 11 and the multiple through holes 12.

[0026] As a technical optimization of this utility model, the lower ends of the multiple diversion pipes 4 are all inclined toward the sedimentation tank 10.

[0027] In this embodiment, the inclined diversion pipe 4 can accurately guide the sewage in the annular guide pipe 3 into the sedimentation tank 10.

[0028] As a technical optimization of this utility model, a turbidity sensor 19 and a dissolved oxygen sensor 20 are respectively installed on the upper and lower parts of the inner wall of the sedimentation tank 1, and a controller is fixedly installed on the outer wall of the sedimentation tank 1. The controller is electrically connected to the turbidity sensor 19, the dissolved oxygen sensor 20 and the motor 14 respectively.

[0029] In this embodiment: turbidity sensor 19 monitors the turbidity of the supernatant in sedimentation tank 1, dissolved oxygen sensor 20 monitors the dissolved oxygen content at the bottom, and the controller can control the operation of turbidity sensor 19, dissolved oxygen sensor 20, and motor 14.

[0030] As a technical optimization of this utility model, the outer wall of the water inlet pipe 18 is fixedly connected to the mounting plate 2, which is fixedly connected to the upper end face of the sedimentation tank 1.

[0031] In this embodiment: the mounting plate 2 can support the water inlet pipe 18.

[0032] As a technical optimization of this utility model, a shut-off valve 16 is installed at the right end of the conveying pipe 13.

[0033] In this embodiment, the shut-off valve 16 can precisely control the amount of sludge discharged.

[0034] The working principle and usage process of this utility model are as follows: Urban sewage flows into the annular guide pipe 3 through the inlet pipe 18. Due to the design of the annular guide pipe 3, the sewage can be initially dispersed within the pipe. Then, the sewage flows to the sedimentation tank 10 through multiple evenly distributed diversion pipes 4 connected to the outer wall of the annular guide pipe 3. The multiple diversion pipes 4 evenly introduce the sewage into the sedimentation tank 10, avoiding direct impact of water flow on the tank body caused by single-point or centralized water inflow, reducing the formation of short-circuit and eddies, playing a primary role in stabilizing the flow, and creating a relatively stable water flow environment for the subsequent sedimentation process. After entering the sedimentation tank 10, the wastewater flows out through the through holes 12 arranged in a ring array on the outer wall of the sedimentation tank 10. An annular sleeve 9 is fitted onto the upper end of the sedimentation tank 10, with multiple flow-stabilizing holes 11 on the annular sleeve 9 corresponding to the positions of the through holes 12. When it is necessary to adjust the water flow, the operator can rotate the threaded rod 8. Since the threaded rod 8 is threadedly connected to the auxiliary block 6, rotating the threaded rod 8 will cause the drive rod 5 to rotate the annular sleeve 9. By adjusting the position of the annular sleeve 9, the overlapping area of ​​the flow-stabilizing holes 11 and the through holes 12 can be changed, thereby further adjusting the flow rate and velocity of the wastewater flowing out of the sedimentation tank 10, achieving secondary flow stabilization, making the water flow in the sedimentation tank 1 more stable, and facilitating sludge sedimentation. After two stages of stabilization, the wastewater settles in sedimentation tank 1. Suspended particles in the wastewater gradually sink to the bottom of sedimentation tank 1 under gravity. When sludge needs to be discharged, the conveying pipe 13 on the outer wall of sedimentation tank 1 comes into play. The lower end of sedimentation tank 10 is connected to the conveying pipe 13. The motor 14 inside the mounting shell 17 starts, driving the screw rod 15 inside the conveying pipe 13 to rotate, conveying the sludge settled at the bottom out, ensuring timely discharge of sludge from sedimentation tank 1 and preventing excessive sludge accumulation from affecting the sedimentation effect. Turbidity sensor 19 monitors the turbidity of the supernatant in sedimentation tank 1, while dissolved oxygen sensor 20 monitors the dissolved oxygen content at the bottom. The monitoring data is transmitted to the controller, which analyzes and judges the data based on preset parameters. When fluctuations occur in influent flow rate, suspended solids concentration, etc., such as a sudden increase in influent load during heavy rain, if turbidity sensor 19 detects an increase in turbidity, the controller will control motor 14 to adjust its speed, accelerating sludge transport to ensure sedimentation efficiency. Simultaneously, the position of the annular sleeve 9 can be adjusted by controlling the rotation of the adjusting screw rod 8 to further optimize the water flow, achieving dynamic adjustment of the operating parameters of sedimentation tank 1 and ensuring stable effluent quality.

[0035] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A sedimentation tank device for urban sewage treatment, comprising a sedimentation tank (1), characterized in that: The sedimentation tank (1) is equipped with a primary flow stabilizing device and a secondary flow stabilizing device. The primary flow stabilization device includes a sedimentation tank (10) installed inside the sedimentation tank (1), an annular guide pipe (3) is installed above the sedimentation tank (10), the outer wall of the annular guide pipe (3) is connected to a plurality of evenly distributed diversion pipes (4), and the outer wall of the annular guide pipe (3) is connected to an inlet pipe (18). The secondary flow stabilization device includes multiple through holes (12) arranged in a ring array through the outer wall of the sedimentation tank (10). The upper end of the sedimentation tank (10) is fitted with an annular sleeve (9). Multiple flow stabilization holes (11) are opened through the outer wall of the annular sleeve (9). The positions of the multiple flow stabilization holes (11) correspond to the positions of the multiple through holes (12). A drive rod (5) is fixedly connected to the upper end of the annular sleeve (9). A U-shaped plate (7) is fixedly connected to the outer wall of the sedimentation tank (1). An auxiliary block (6) is rotatably connected inside the U-shaped plate (7). A threaded rod (8) is threaded through and threaded to the outer wall of the auxiliary block (6). The front end of the threaded rod (8) is movably connected to the drive rod (5) through a hinge seat.

2. The sedimentation tank device for urban sewage treatment according to claim 1, characterized in that: The outer wall of the sedimentation tank (1) is connected to a conveying pipe (13). The lower end of the sedimentation tank (10) is connected to the conveying pipe (13). The left end of the conveying pipe (13) is fixedly connected to an installation shell (17). A motor (14) is installed inside the installation shell (17). The output end of the motor (14) passes through the installation shell (17) and is fixedly connected to a spiral rod (15) located inside the conveying pipe (13).

3. The sedimentation tank device for urban sewage treatment according to claim 1, characterized in that: The positions of the plurality of flow stabilizing holes (11) correspond to the positions of the plurality of through holes (12).

4. The sedimentation tank device for urban sewage treatment according to claim 1, characterized in that: The lower ends of the multiple diversion pipes (4) are inclined toward the sedimentation tank (10).

5. A sedimentation tank device for urban sewage treatment according to claim 1, characterized in that: The sedimentation tank (1) is equipped with a turbidity sensor (19) and a dissolved oxygen sensor (20) on the upper and lower parts of its inner wall, respectively. A controller is fixedly installed on the outer wall of the sedimentation tank (1). The controller is electrically connected to the turbidity sensor (19), the dissolved oxygen sensor (20), and the motor (14).

6. A sedimentation tank device for urban sewage treatment according to claim 1, characterized in that: The outer wall of the water inlet pipe (18) is fixedly connected to an installation plate (2) that is fixedly connected to the upper end face of the sedimentation tank (1).

7. A sedimentation tank device for urban sewage treatment according to claim 2, characterized in that: A shut-off valve (16) is installed at the right end of the delivery pipe (13).

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