A sedimentation basin

Abstract

The utility model provides a kind of sedimentation tank, it is related to water treatment technical field, including multiple unit pools, each unit pool is sequentially communicated, two adjacent unit pools are provided with communicating port, and are communicated with each other by communicating port, the liquid to be treated in the sedimentation tank sequentially flows through each unit pool from the first end of the sedimentation tank to the tail end of the sedimentation tank;Wherein, the flow direction between two communicating ports of the same unit pool has an included angle.The included angle is arranged between the flow direction of two communicating ports in the same unit pool, in the same unit pool, the influence of the disturbance of the liquid to be treated of the communicating port for discharging liquid to be treated by the communicating port of the liquid to be treated injected can be reduced, the liquid to be treated near the communicating port for discharging liquid to be treated can be settled better, and the sedimentation and purification effect of the sedimentation tank on the liquid to be treated is improved.

Description

Technical Field

[0001] This utility model relates to the field of water treatment technology, and in particular to a sedimentation tank. Background Technology

[0002] In industrial production processes, liquids containing solid sediments are often generated. For example, in the coking process of the coke cleaning tank of the cracking furnace in an ethylene plant, liquids containing coke residue are generated. After sedimentation in a collection tank, these liquids are discharged into the oily wastewater system. During the sedimentation process, the flow of steam and the liquid in the sedimentation tank creates a large amount of disturbance, making it difficult for coke powder to settle well in the traditional collection tank. This results in a large amount of coke powder entering the wastewater system and clogging the underground pipe network. This problem urgently needs to be solved. Utility Model Content

[0003] This invention provides a sedimentation tank to solve the technical problem that solid substances in the liquid to be treated are difficult to settle effectively due to the agitation caused by the flow of steam and the liquid to be treated within the sedimentation tank.

[0004] The sedimentation tank provided by this utility model includes: Multiple unit pools are connected in sequence. A connection port is provided between two adjacent unit pools and they are connected to each other through the connection port. The liquid to be treated in the sedimentation tank flows from the first end of the sedimentation tank to the last end of the sedimentation tank through each unit pool in sequence. Wherein, the flow directions of the liquids to be treated at the two connecting ports connected to the same unit pool have an included angle.

[0005] In one embodiment of the present invention, a plurality of the unit pools are arranged around a central axis along a spiral line, the extension direction of the spiral line is perpendicular to the extension direction of the central axis, and the first end of the sedimentation pool is closer to the central axis than the tail end of the sedimentation pool.

[0006] In one embodiment of the present invention, the sedimentation tank includes four unit tanks, and the unit tanks are square. The four unit tanks are arranged in a grid pattern, and the two connecting ports of the same unit tank are respectively provided on two adjacent side walls of the unit tank.

[0007] In one embodiment of the present invention, the height of each of the connecting ports is gradually reduced along the flow direction of the liquid to be treated in the sedimentation tank, so that the liquid storage height of the unit tank is gradually reduced along the flow direction of the liquid to be treated in the sedimentation tank.

[0008] In one embodiment of this utility model, the difference in liquid storage height between adjacent unit pools is 0.15m to 0.20m.

[0009] In one embodiment of the present invention, an overflow weir is provided at the connection port connecting two adjacent unit pools. The overflow weir is used to guide the liquid to be treated at the connection port into the unit pool. Along the flow direction of the liquid to be treated in the sedimentation tank, in two adjacent unit pools, the overflow weir extends from the water surface of one unit pool to the water surface of the other unit pool.

[0010] In one embodiment of this utility model, the angle between the overflow weir and the water surface of the unit pool is 15°~30°.

[0011] In one embodiment of the present invention, a cover plate for sealing the opening of the unit tank at the first end of the sedimentation tank is provided.

[0012] In one embodiment of the present invention, the sedimentation tank has an inlet located on the cover plate, and the connection port of the unit tank at the first end of the sedimentation tank is located outside the projection range of the unit tank along the flow direction of the liquid to be treated in the inlet.

[0013] In one embodiment of the present invention, the sedimentation tank has an outlet, which is located near the bottom of a unit tank at the tail end of the sedimentation tank.

[0014] The beneficial effects of this utility model are as follows: The sedimentation tank proposed in this utility model, by setting an angle between the fluid flow directions of the two connecting ports in the same unit tank, can reduce the influence of the disturbance of the liquid to be treated on the connecting port used to discharge the liquid to be treated by the liquid to be treated injected into the connecting port, so that the liquid to be treated near the connecting port used to discharge the liquid to be treated can settle better, reduce the solid matter carried in the liquid to be treated discharged from the connecting port used to discharge the liquid to be treated, and thus improve the sedimentation and purification effect of the sedimentation tank on the liquid to be treated. Attached Figure Description

[0015] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0016] In the attached diagram: Figure 1 This is a schematic diagram of the structure of a sedimentation tank provided in an embodiment of the present invention; Figure 2 This is a top view of a sedimentation tank provided in an embodiment of the present invention.

[0017] The attached diagram is labeled as follows: Unit pool 1, overflow weir 2, outlet 3. Detailed Implementation

[0018] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0019] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. The drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0020] In the following description, numerous details are explored to provide a more thorough explanation of embodiments of the present invention. However, it will be apparent to those skilled in the art that embodiments of the present invention may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring embodiments of the present invention.

[0021] Please see Figure 1 and Figure 2This utility model provides a sedimentation tank comprising multiple unit tanks 1, which are sequentially connected. A connecting port 4 is provided between two adjacent unit tanks 1, and they are interconnected through the connecting port 4. The liquid to be treated in the sedimentation tank flows sequentially from the beginning to the end of the sedimentation tank through each unit tank 1. The flow directions of the liquid to be treated through the two connecting ports 4 connected to the same unit tank 1 form an angle. By setting an angle between the flow directions of the liquid to be treated through the two connecting ports 4 in a unit tank 1 with two connecting ports 4, the disturbance of the liquid to be treated at the inlet to the outlet 3 can be reduced, allowing the liquid to be treated near the outlet 3 to settle better, reducing the solid matter carried in the liquid discharged from the outlet 3, thereby improving the sedimentation and purification effect of the sedimentation tank on the liquid to be treated. By setting an angle between the fluid flow directions of the two connecting ports 4 connected to the same unit tank 1, the disturbance of the liquid to be treated by the liquid to be treated entering the connecting port 4 for discharging the liquid to be treated can be reduced within the same unit tank 1. This allows the liquid to be treated near the connecting port 4 for discharging the liquid to be treated to settle better, reducing the solid matter carried in the liquid to be treated discharged from the connecting port 4, thereby improving the sedimentation and purification effect of the sedimentation tank on the liquid to be treated.

[0022] In one exemplary embodiment, multiple unit tanks 1 are arranged along a spiral around a central axis, with the spiral extending perpendicular to the central axis. The first end of each sedimentation tank is closer to the central axis than its last end. This arrangement reduces the longitudinal and transverse dimensions of the sedimentation tanks, thereby reducing their footprint and making their structure more compact. In another exemplary embodiment, the multiple unit tanks 1 are arranged in a serpentine pattern. The arrangement of the sedimentation tanks can be adjusted according to actual needs.

[0023] Please see Figure 2In this embodiment, the sedimentation tank includes four unit tanks 1, and each unit tank 1 is square. The four unit tanks 1 are arranged in a grid pattern. Two connecting ports 4 connected to the same unit tank 1 are respectively located on two adjacent side walls of the unit tank 1. The four unit tanks 1 of the sedimentation tank are arranged in a grid pattern, which is neat and aesthetically pleasing. For ease of description, the connecting port 4 in the same unit tank 1 used for the inflow of the liquid to be treated is called the inlet, and the connecting port 4 in the same unit tank 1 used for the outflow of the liquid to be treated is called the outlet 3. Within the same unit tank 1, when the liquid to be treated enters the unit tank 1 through the inlet, the liquid to be treated causes significant disturbance to the inlet and the liquid flowing in the direction of the inlet. The outlet 3 of the unit tank 1 is located on an adjacent sidewall with the sidewall of the inlet. This keeps the outlet 3 away from the area of ​​significant disturbance, reducing the agitation of the liquid at the outlet 3 and allowing for better sedimentation. Consequently, the amount of solid matter carried in the liquid near the outlet 3 is reduced, improving the sedimentation effect of the sedimentation tank. In this embodiment, the bottom dimensions of the four unit tanks 1 are all the same, 1.5m * 1.4m. In other embodiments, the bottom area of ​​the four unit tanks 1 increases sequentially along the flow path of the liquid to be treated.

[0024] In this embodiment, the height of each connecting port 4 gradually decreases along the flow direction of the liquid to be treated in the sedimentation tank, so that the liquid storage height of the unit tank 1 gradually decreases along the flow direction of the liquid to be treated in the sedimentation tank. This allows the liquid to be treated between adjacent unit tanks 1 to flow from the unit tank 1 with a higher liquid level to the unit tank 1 with a lower liquid level, thus eliminating the need for a power device to pump the liquid to be treated into the adjacent unit tank 1. In some embodiments, the liquid to be treated in the unit tank 1 is pumped into the adjacent unit tank 1 by a pump.

[0025] In an exemplary embodiment, along the flow direction of the liquid to be treated in the sedimentation tank, the difference in liquid storage height between adjacent unit tanks 1 is between 0.15m and 0.20m, which allows the liquid to be treated to flow into the adjacent unit tank 1 relatively smoothly.

[0026] In an exemplary embodiment, an overflow weir 2 is provided between two adjacent unit pools 1 to guide the inflow of the liquid to be treated from the connecting port 4. The overflow weir 2 is positioned corresponding to the connecting port 4 and extends from the surface of the stored liquid in one unit pool 1 to the surface of the stored liquid in the other unit pool 1 along the flow direction of the liquid to be treated in the sedimentation tank. By providing the overflow weir 2, the flow path of the liquid to be treated can be guided, while slowing down the flow rate of the liquid to be treated when entering the other unit pool 1, thereby reducing the disturbance of the liquid to be treated in the unit pool 1 when entering the unit pool 1, thereby improving the sedimentation and purification effect of solid matter in the unit pool 1.

[0027] In this embodiment, the overflow weir 2 has a U-shaped cross-section, and the liquid to be treated flows within the overflow weir 2, which can guide the flow direction of the liquid to be treated. The angle between the overflow weir 2 and the water surface of the unit pool 1 is 15°~30°. This angle can slow down the flow rate of the liquid to be treated when it enters another unit pool 1, thereby reducing the disturbance of the liquid to be treated in the unit pool 1 when it is filled with water.

[0028] In an exemplary embodiment, a cover plate for sealing the opening is provided on the unit tank 1 at the beginning of the sedimentation tank. Since the unit tank 1 at the beginning of the sedimentation tank is the most important for sedimentation and contains the highest content of solids in the liquid to be treated, adding a cover plate can effectively prevent splashing of the liquid to be treated and solids when entering the unit tank 1, thus preventing the liquid to be treated and the solids it carries from affecting the outside environment.

[0029] In an exemplary embodiment, the sedimentation tank has an inlet located on a cover plate. The connection port 4 of the unit tank 1 at the beginning of the sedimentation tank is located outside the projection range of the unit tank 1 along the flow direction of the liquid to be treated in the inlet. This reduces the disturbance of the liquid to be treated at the connection port 4 of the unit tank 1 at the beginning of the sedimentation tank by the inlet, thereby improving the sedimentation and purification effect of the unit tank 1.

[0030] In an exemplary embodiment, the sedimentation tank has an outlet 3, which is located near the bottom of the unit tank 1 at the end of the sedimentation tank. Since the unit tank 1 located before the end of the sedimentation tank has already filtered out most of the solid matter that can be settled, the solid matter in the liquid to be treated in the unit tank 1 located at the end of the sedimentation tank basically floats on the surface of the liquid to be treated. By setting the outlet 3 near the bottom of the unit tank 1, the solid matter floating on the surface of the liquid to be treated in the tank can be prevented from being carried out, thereby further reducing the solid matter content in the liquid to be treated after sedimentation in the sedimentation tank.

[0031] In summary, by setting an angle between the fluid flow directions of the two connecting ports 4 connected to the same unit tank 1, the disturbance of the liquid to be treated by the liquid to be treated entering the connecting port 4 for discharging the liquid to be treated can be reduced within the same unit tank 1. This allows the liquid to be treated near the connecting port 4 for discharging the liquid to be treated to settle better, reducing the amount of solid matter carried in the liquid to be treated discharged from the connecting port 4, thereby improving the sedimentation and purification effect of the sedimentation tank on the liquid to be treated.

[0032] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A sedimentation tank, characterized in that, It includes multiple unit pools, which are connected in sequence. A connection port is provided between two adjacent unit pools, and they are connected to each other through the connection port. The liquid to be treated in the sedimentation tank flows from the first end of the sedimentation tank to the last end of the sedimentation tank through each of the unit pools in sequence. Wherein, the flow directions of the liquids to be treated at the two connecting ports connected to the same unit pool have an included angle.

2. The sedimentation tank according to claim 1, characterized in that: Multiple unit pools are arranged around a central axis along a spiral, the spiral extending in a direction perpendicular to the central axis, and the first end of each sedimentation pool is closer to the central axis than the last end of the sedimentation pool.

3. The sedimentation tank according to claim 2, characterized in that: The sedimentation tank includes four unit tanks, and the unit tanks are square. The four unit tanks are arranged in a grid pattern, and the two connecting ports of the same unit tank are respectively located on two adjacent side walls of the unit tank.

4. The sedimentation tank according to claim 1, characterized in that: Along the flow direction of the liquid to be treated in the sedimentation tank, the height of each of the connecting ports is gradually reduced, so that the liquid storage height of the unit tank gradually decreases along the flow direction of the liquid to be treated in the sedimentation tank.

5. The sedimentation tank according to claim 4, characterized in that: Along the flow direction of the liquid to be treated in the sedimentation tank, the difference in liquid storage height between adjacent unit tanks is 0.15m~0.20m.

6. The sedimentation tank according to claim 4, characterized in that: An overflow weir is provided at the connection point connecting two adjacent unit pools. The overflow weir is used to guide the liquid to be treated at the connection point into the unit pool. Along the flow direction of the liquid to be treated in the sedimentation tank, in two adjacent unit pools, the overflow weir extends from the water surface of one unit pool to the water surface of the other unit pool.

7. The sedimentation tank according to claim 6, characterized in that: The angle between the overflow weir and the water level in the unit pool is 15° to 30°.

8. The sedimentation tank according to any one of claims 1 to 7, characterized in that: The opening of the unit tank at the beginning of the sedimentation tank is provided with a cover plate for sealing the opening.

9. The sedimentation tank according to claim 8, characterized in that: The sedimentation tank has an inlet located on the cover plate, and the connection port of the unit tank at the first end of the sedimentation tank is located outside the projection range of the unit tank along the flow direction of the liquid to be treated in the inlet.

10. The sedimentation tank according to any one of claims 1 to 7, characterized in that: The sedimentation tank has an outlet located near the bottom of a unit tank at the tail end of the sedimentation tank.

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