Sedimentation tank
By designing a structure in the sedimentation tank with inlet and outlet pipes in different directions from the water flow, and by setting up inclined plates and multiple branch pipe outlets, the problem of poor sedimentation effect was solved, and more efficient sludge sedimentation and improved effluent quality were achieved.
Patent Information
- Application Number
- CN202421010451.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-10
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-05-10
AI Technical Summary
Existing sedimentation tanks are not effective at settling wastewater, resulting in excessively high mud content in the effluent and affecting its quality.
Design a sedimentation tank structure in which the water flow direction at the outlet of the inlet pipe is different from the water flow direction into the sedimentation tank from the inlet tank. Combined with the setting of inclined plates and multiple branch pipe outlets, the uniformity of water distribution is increased, the internal turbulence of the equipment is reduced, the water inlet speed is controlled, and the sedimentation effect is improved.
The improved structural design enhanced the sedimentation effect, reduced internal turbulence, improved the uniformity and efficiency of sludge sedimentation, and reduced the sludge content in the effluent.
Smart Images
Figure CN222342058U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the technical field of sewage treatment, and in particular, to a sedimentation tank. Background Art
[0002] In the process of sewage treatment, a variety of water treatment methods are involved. Sedimentation treatment is a common treatment link and plays a very important role in the entire process. The basic principle of sedimentation is that when solid matter flows with the liquid, it moves downward under the action of gravity, gradually settles to the bottom of the pool and is intercepted, and the clarified liquid flows out from the surface of the pool, thereby achieving solid-liquid separation. However, when the existing sedimentation tank is used for sedimentation treatment, the sedimentation effect is often poor due to various reasons such as water velocity and pool structure, resulting in too high mud content in the final effluent, affecting the quality of the final effluent. Utility Model Content
[0003] The purpose of the present invention is to provide a sedimentation tank to solve the problem of poor sedimentation effect of the sedimentation tank in the related art.
[0004] In order to achieve the above object, the present disclosure provides a sedimentation tank, comprising:
[0005] A water inlet box, the water inlet box having enclosed side walls, and openings for allowing fluid to flow out of the water inlet box are formed between the multiple side walls;
[0006] a water inlet pipe, wherein the water inlet pipe portion is disposed in the water inlet box, the water inlet pipe comprises a water outlet located in the water inlet box, and a water flow direction of the water outlet is different from a water flow direction at the opening; and
[0007] A sedimentation tank is located downstream of the water inlet tank and connected to the opening.
[0008] Optionally, the side wall comprises:
[0009] a first vertical plate, the first vertical plate being arranged opposite to the opening;
[0010] two second vertical plates, the two second vertical plates are respectively arranged on both sides of the first vertical plate; and
[0011] An inclined plate, wherein the inclined plate is respectively connected to the first vertical plate, the second vertical plate and the sedimentation box, and the inclined plate gradually extends from the first vertical plate to the sedimentation box, and the connection between the inclined plate and the sedimentation box is lower than the connection between the inclined plate and the first vertical plate, and is used to guide the sediment in the water inlet tank to the sedimentation box.
[0012] Optionally, the water outlet is arranged toward the first vertical plate and / or the inclined plate.
[0013] Optionally, the water inlet pipe comprises:
[0014] a water inlet main including a water inlet located outside the water inlet tank; and
[0015] A first branch pipe is connected to the water inlet main pipe, and the first branch pipe is located in the water inlet tank and extends along the extension direction of the sedimentation tank.
[0016] Optionally, the water inlet pipe further includes a plurality of second branch pipes, the plurality of second branch pipes are arranged on the first branch pipe at intervals, and the second branch pipes extend in a direction away from the water inlet main pipe, and the water outlet is arranged on the second branch pipe.
[0017] Optionally, the water outlets are respectively arranged on a plurality of the second branch pipes, and a plurality of water outlets are arranged at intervals on the same second branch pipe.
[0018] Optionally, the water inlet main pipe is arranged below the first branch pipe.
[0019] Optionally, the sedimentation tank further comprises a water outlet box connected downstream of the sedimentation tank, the water outlet box is connected to a side of the sedimentation tank away from the water inlet box, and comprises a water outlet pipe for communicating with the outside.
[0020] Optionally, the sedimentation tank comprises:
[0021] A sedimentation module, wherein the sedimentation module is connected to the opening, and an end of the sedimentation module away from the opening is connected to the water outlet tank; and
[0022] The first mud collecting hopper is used to connect to the sludge pool, and the first mud collecting hopper is connected below the sedimentation module.
[0023] Optionally, the water outlet box further includes:
[0024] A water outlet tank body, the water outlet tank body being connected downstream of the sedimentation tank;
[0025] A water collecting trough, the water collecting trough being connected to the water outlet pipe, the water collecting trough being connected to a side of the water outlet tank body away from the sedimentation tank and being located at the top of the water outlet tank, and extending along the extension direction of the sedimentation tank; and
[0026] The second sludge collecting hopper is located below the water outlet tank body and is used for connecting to the sludge pool.
[0027] Through the above technical scheme, the water flow direction at the outlet of the water inlet pipe of the sedimentation tank is different from the water flow direction of the water flowing into the sedimentation tank from the water inlet tank. In this way, the water outflow speed at the opening of the water inlet tank can be effectively slowed down, the uniformity of water distribution can be increased, the internal turbulence of the equipment can be reduced, the water inlet speed of the sedimentation tank can be slowed down, and the sludge sedimentation effect in the sedimentation tank can be improved.
[0028] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:
[0030] Figure 1 It is a front view of a sedimentation tank according to one embodiment of the present disclosure.
[0031] Figure 2 It is a top view of a sedimentation tank according to one embodiment of the present disclosure.
[0032] Figure 3 It is a schematic diagram of a water inlet pipe in a sedimentation tank according to an embodiment of the present disclosure.
[0033] Description of Reference Numerals
[0034] 1-water inlet box; 11-opening; 12-side wall; 121-first vertical plate; 122-second vertical plate; 123-inclined plate; 2-water inlet pipe; 20-water outlet; 21-water inlet main pipe; 210-water inlet; 22-first branch pipe; 23-second branch pipe; 3-sedimentation box; 31-sedimentation module; 32-first mud collecting hopper; 321-first mud discharge pipe; 4-water outlet box; 40-water outlet box body; 41-water outlet pipe; 42-water collecting trough; 43-second mud collecting hopper; 431-second mud discharge pipe. DETAILED DESCRIPTION
[0035] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.
[0036] In the present disclosure, unless otherwise stated, directional words such as "upper" and "lower" are defined for the overall layout of the sedimentation tank, and "inside" and "outside" are defined for the outline of the corresponding components. The use of terms such as "first" and "second" is intended to distinguish different components and does not have order and importance. In addition, in the following description, when referring to the drawings, unless otherwise explained, the same reference numerals in different drawings represent the same or similar elements.
[0037] According to one embodiment of the present disclosure, Figures 1 to 3 As shown, a sedimentation tank is provided, including an inlet tank 1, an inlet pipe 2 and a sedimentation tank 3. The inlet tank 1 has an enclosed side wall 12, and openings 11 for fluid to flow in and out of the inlet tank 1 are formed between the multi-sided side walls 12. The inlet pipe 2 can be partially arranged in the inlet tank 1, and the inlet pipe 2 includes a water outlet 20 located in the inlet tank 1, and the water flow direction of the water outlet 20 is different from the water flow direction at the opening 11. The sedimentation tank 3 can be located downstream of the inlet tank 1 and connected to the opening 11. The fluid is sprayed out from the water outlet 20, and can point-wise impact the corresponding side wall 12. After the fluid contacts the side wall 12, the corresponding side wall 12 can reflect the fluid in all directions, so that the point water outlet of the water outlet 20 becomes the surface water outlet reflected by the side wall 12, so as to increase the uniformity of water distribution.
[0038] Through the above technical scheme, the water flow direction at the water outlet 20 of the water inlet pipe 2 of the sedimentation tank is different from the water flow direction of the water inlet tank 1 flowing into the sedimentation tank 3. In this way, the water outflow speed at the opening 11 of the water inlet tank 1 can be effectively slowed down, the uniformity of water distribution can be increased, the internal turbulence of the equipment can be reduced, the water inlet speed of the sedimentation tank 3 can be slowed down, and the sludge sedimentation effect in the sedimentation tank 3 can be improved.
[0039] It should be noted that the water outlet 20 can be a water pipe with a nominal diameter of 50 mm, and can also be a water pipe of other sizes according to the requirements of sewage treatment and the solid concentration, and the present disclosure does not limit this. The fluid here can be a sewage mixture of water and solids such as sludge. The water flow direction of the water outlet 20 is different from the water flow direction at the opening 11, which means that the two can be completely opposite, or vertical, or at an obtuse angle or an acute angle. The specific embodiment will be described later.
[0040] Furthermore, if Figure 1 and Figure 2As shown, the side wall 12 may include a first vertical plate 121, two second vertical plates 122 and an inclined plate 123. The first vertical plate 121 may be arranged opposite to the opening 11, and the two second vertical plates 122 are respectively arranged on both sides of the first vertical plate 121. After the fluid enters the water inlet tank 1, under the action of gravity, the sludge will settle to a certain extent to the bottom of the water inlet tank 1. The inclined plate 123 may be respectively connected to the first vertical plate 121, the second vertical plate 122 and the sedimentation tank 3, and the inclined plate 123 gradually extends from the first vertical plate 121 to the sedimentation tank 3. The connection between the inclined plate 123 and the sedimentation tank 3 is lower than the connection between the inclined plate 123 and the first vertical plate 121. In this way, under the action of gravity, the sediment can move toward the sedimentation tank along the slope of the inclined plate 123, so as to guide the sediment in the water inlet tank 1 to the sedimentation tank 3, thereby reducing the sludge accumulation in the water inlet tank 1. Here, the inclined plate 123 may be inclined at an angle of 30° to 60° relative to the horizontal direction, which is not limited in the present disclosure. The side wall 12 may also include a top wall, which may be arranged opposite to the inclined plate 123 and, together with the first vertical plate 121 and the two second vertical plates 122, close the top of the water inlet tank 1.
[0041] Furthermore, if Figure 1 As shown, the water outlet 20 can be set toward at least one of the first vertical plate 121 and the inclined plate 123. The fluid sprayed from the water outlet 20 can point-impact the corresponding first vertical plate 121 or the inclined plate 123. After the fluid contacts the first vertical plate 121 or the inclined plate 123, the corresponding first vertical plate 121 or the inclined plate 123 can reflect the fluid in all directions, so that the point water outlet 20 is changed into the surface water outlet reflected by the first vertical plate 121 or the inclined plate 123. In this way, compared with the water flow at the water outlet 20 and the fluid at the opening 11 arranged at an angle, this setting can make the fluid direction at the water outlet 20 and the fluid direction at the opening 11 set in opposite directions, so as to further increase the uniformity of water distribution, reduce the turbulence phenomenon inside the equipment, slow down the water inlet speed of the sedimentation tank 3, and improve the sludge sedimentation effect in the sedimentation tank 3.
[0042] According to one embodiment of the present disclosure, Figures 1 to 3 As shown, the water inlet pipe 2 may include a water inlet main pipe 21 and a first branch pipe 22. The water inlet main pipe 21 includes a water inlet 210 located outside the water inlet tank 1, and the first branch pipe 22 is connected to the water inlet main pipe 21, and the first branch pipe 22 is located in the water inlet tank 1 and extends along the extension direction of the sedimentation tank, so that after the fluid enters the water inlet tank 1, it can be discharged evenly along the extension direction of the sedimentation tank, increase the uniformity of water distribution, make the water inlet speed entering various parts of the sedimentation tank 3 more uniform, and improve the sludge sedimentation effect of the sedimentation tank 3.
[0043] Furthermore, if Figures 1 to 3As shown, the water inlet pipe 2 may further include a plurality of second branch pipes 23, and the plurality of second branch pipes 23 are arranged at intervals on the first branch pipe 22, and the second branch pipes 23 extend in a direction away from the water inlet main pipe 21, and the water outlet 20 is arranged on the second branch pipe 23, and the position and direction of the water outlet 20 can be set more flexibly according to needs, thereby controlling the water outlet direction of the water outlet 20 and increasing the uniformity of water distribution.
[0044] Furthermore, if Figures 1 to 3 As shown, the water outlets 20 can be respectively arranged on multiple second branch pipes 23, and multiple water outlets 20 can be arranged at intervals on the same second branch pipe 23. In this way, multiple water inlets can be arranged in both the height direction and the extension direction of the sedimentation tank, which can effectively improve the uniformity of the water distribution of the water inlet tank 1, make the water inlet speed entering each part of the sedimentation tank 3 more uniform, and improve the sludge sedimentation effect of the sedimentation tank 3. With respect to the spacing arrangement of the multiple water outlets 20 on each second branch pipe 23, the multiple water outlets 20 can be arranged at intervals along the height direction of the second branch pipe 23, can be arranged at equal intervals on the entire pipe of a second branch pipe 23, or can be arranged only on the upper part of the second branch pipe 23. The multiple water outlets 20 can face one side or different sides, that is, the multiple water outlets 20 can also be distributed along the circumference of the second branch pipe 23, and the present disclosure does not limit this.
[0045] According to an embodiment of the present disclosure, the water inlet main pipe 21 is disposed below the first branch pipe 22. Compared with the side or top water inlet, the lower water inlet can eliminate the influence of gravity and more accurately control the water inlet speed of the water inlet tank 1.
[0046] According to one embodiment of the present disclosure, Figure 1 and Figure 2 As shown, the sedimentation tank may also include an outlet tank 4 connected to the downstream of the sedimentation tank 3, the outlet tank 4 is connected to the side of the sedimentation tank 3 away from the inlet tank 1, and includes an outlet pipe 41 for communicating with the outside, after sedimentation in the sedimentation tank 3, it is precipitated again in the outlet tank 4, so as to better improve the solid-liquid separation effect of the fluid entering the sedimentation tank. It should be noted that the inlet tank 1, the sedimentation tank 3 and the outlet tank 4 can be modularly spliced, that is, each part can be independently installed and then spliced together, and each part can also be spliced in multiples along the extension direction of the sedimentation tank to correspond to different volumes of sewage treatment, and the present disclosure does not limit this.
[0047] Furthermore, if Figure 1 and Figure 2As shown, the sedimentation tank 3 may include a sedimentation module 31 and a first mud collecting hopper 32. Here, the sedimentation module 31 may be connected to the opening 11, and one end of the sedimentation module 31 away from the opening 11 is connected to the water outlet tank 4, and the fluid in the water inlet tank 1 enters the sedimentation module 31 through the opening 11. The first mud collecting hopper 32 is connected below the sedimentation module 31, so that the sedimentation module 31 can discharge a certain amount of mud, thereby extending the single use time of the sedimentation module 31.
[0048] The sedimentation module 31 refers to a device that integrates the core components involved in the sedimentation process into an assembly, which is different from the traditional open sedimentation tank. The sedimentation module 31 can be a lateral flow sedimentation module, so that the water flow with lower density and a small amount of solids in the fluid can move in the horizontal direction. In this way, the sludge formed by the solids with higher density in the fluid can move downward under the action of the sedimentation module 31 and gravity, and enter the first mud collecting hopper 32. The first mud collecting hopper 32 can be used to connect the sludge tank to discharge the collected sludge into the sludge tank for the next treatment process. The fluid with reduced solid content moves horizontally in the sedimentation module 31 from the side close to the opening 11 to the side close to the water outlet tank 4, and then enters the water outlet tank 4 to complete the first sedimentation. In addition, according to the volume of sewage treatment, the number of sedimentation modules 31 can be multiple, and they are arranged along the extension direction of the sedimentation tank to meet the treatment needs of large volumes of sewage. A first mud collecting bucket 32 may be connected to the bottom of a sedimentation module 31 according to the size, or two first mud collecting buckets 32 may be arranged side by side, which is not limited in the present disclosure.
[0049] According to one embodiment of the present disclosure, Figure 1 and Figure 2 As shown, the water outlet box 4 may also include a water outlet box body 40, a water collecting trough 42 and a second mud collecting hopper 43. Among them, the water outlet box body 40 can be connected to the downstream of the sedimentation box 3, the water collecting trough 42 can be connected to the water outlet pipe 41, and the water collecting trough 42 is connected to the side of the water outlet box body 40 away from the sedimentation box 3 and is located at the top of the water outlet box 4, and extends along the extension direction of the sedimentation tank. The water collecting trough 42 may be provided with an open groove along the extension direction of the sedimentation tank or multiple water holes may be arranged at intervals to connect to the water outlet box body 40, and the present disclosure does not limit this. Due to the effect of gravity, a fixed object with a higher density will move downward in the fluid. Therefore, the higher the fluid is located in the height direction, the lower its solid content is. Therefore, the water collecting trough 42 is arranged at the top of the water outlet box 4 to collect the fluid water flow with less solid content, so that it can enter the next process through the water outlet pipe 41. The second mud collecting hopper 43 is located below the water outlet tank body 40, and collects the sludge precipitated from the water outlet tank body 40 to complete the second precipitation. The second mud collecting hopper 43 can be used to connect to the sludge pool to enter the sludge collected in the second mud collecting hopper 43 into the next treatment process.
[0050] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.
[0051] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.
[0052] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.
Claims
1. A sedimentation tank, characterized in that: include: A water inlet box, the water inlet box having enclosed side walls, and openings for allowing fluid to flow out of the water inlet box are formed between the multiple side walls; a water inlet pipe, wherein the water inlet pipe portion is disposed in the water inlet box, the water inlet pipe comprises a water outlet located in the water inlet box, and a water flow direction of the water outlet is different from a water flow direction at the opening; and A sedimentation tank is located downstream of the water inlet tank and connected to the opening.
2. The sedimentation tank according to claim 1, characterized in that: The side wall comprises: a first vertical plate, the first vertical plate being arranged opposite to the opening; two second vertical plates, the two second vertical plates are respectively arranged on both sides of the first vertical plate; and An inclined plate, wherein the inclined plate is respectively connected to the first vertical plate, the second vertical plate and the sedimentation box, and the inclined plate gradually extends from the first vertical plate to the sedimentation box, and the connection between the inclined plate and the sedimentation box is lower than the connection between the inclined plate and the first vertical plate, and is used to guide the sediment in the water inlet tank to the sedimentation box.
3. The sedimentation tank according to claim 2, characterized in that: The water outlet is arranged toward the first vertical plate and / or the inclined plate.
4. The sedimentation tank according to claim 1, characterized in that: The water inlet pipe comprises: a water inlet main including a water inlet located outside the water inlet tank; and A first branch pipe is connected to the water inlet main pipe, and the first branch pipe is located in the water inlet tank and extends along the extension direction of the sedimentation tank.
5. The sedimentation tank according to claim 4, characterized in that: The water inlet pipe also includes a plurality of second branch pipes, which are arranged on the first branch pipe at intervals, and the second branch pipes extend in a direction away from the water inlet main pipe, and the water outlet is arranged on the second branch pipe.
6. The sedimentation tank according to claim 5, characterized in that: The water outlets are respectively arranged on a plurality of the second branch pipes, and a plurality of water outlets are arranged at intervals on the same second branch pipe.
7. The sedimentation tank according to claim 4, characterized in that: The water inlet main pipe is arranged below the first branch pipe.
8. The sedimentation tank according to any one of claims 1 to 7, characterized in that: The sedimentation tank further comprises a water outlet box connected to the downstream of the sedimentation tank, the water outlet box is connected to a side of the sedimentation tank away from the water inlet box, and comprises a water outlet pipe for communicating with the outside.
9. The sedimentation tank according to claim 8, characterized in that: The sedimentation tank comprises: A sedimentation module, wherein the sedimentation module is connected to the opening, and an end of the sedimentation module away from the opening is connected to the water outlet tank; and The first mud collecting hopper is used to connect to the sludge pool, and the first mud collecting hopper is connected below the sedimentation module.
10. The sedimentation tank according to claim 8, characterized in that: The water outlet box also includes: A water outlet tank body, the water outlet tank body being connected downstream of the sedimentation tank; A water collecting trough, the water collecting trough being connected to the water outlet pipe, the water collecting trough being connected to a side of the water outlet tank body away from the sedimentation tank and being located at the top of the water outlet tank, and extending along the extension direction of the sedimentation tank; and The second sludge collecting hopper is located below the water outlet tank body and is used for connecting to the sludge pool.