Bucket-shaped inclined plate sedimentation tank

Abstract

The utility model belongs to the technical field of solid-liquid separation, and particularly discloses a bucket-shaped inclined plate sedimentation tank. A water inlet pipe outlet of the sedimentation tank is positioned at the lower part of the tank body; at least two bucket-shaped inclined plates are fixedly connected in series between an outlet of the water inlet pipe and an inlet of the water outlet pipe from bottom to top in the pool body, each bucket-shaped inclined plate is an inverted cone shell with an upper opening, each bucket-shaped inclined plate comprises a bucket wall and a bucket bottom opening, the bucket bottom openings are formed in the bottom ends of the bucket-shaped inclined plates, and a plurality of bucket wall openings extending up and down are formed in the bucket walls at intervals in the circumferential direction; the outer edge of the top end of the hopper wall is fixedly connected with the tank body; a sludge discharge pipe is arranged at the bottom end of the tank body. According to the utility model, the bucket-shaped inclined plates are connected in series in the tank body at intervals from bottom to top, and the bucket bottom openings and the bucket wall openings are formed in the bucket-shaped inclined plates, so that the effective settling area can be obviously increased, the settling effect can be improved, sludge can be conveniently discharged in a concentrated manner, and the sludge settling tank has the characteristics of simple structure, high settling efficiency, good sludge discharging effect and difficulty in blockage.

Description

Technical Field

[0001] This utility model belongs to the field of solid-liquid separation technology, specifically relating to a bucket-shaped inclined plate sedimentation tank with simple structure, high sedimentation efficiency, good sludge discharge effect, and is not easy to clog. Background Technology

[0002] In water treatment processes, the process by which suspended particles in water separate from the water under the influence of gravity is called sedimentation. When the density of the particles is greater than that of water, the particles sink; conversely, when the density of the particles is less than that of water, the particles float.

[0003] Analysis of particle settling processes in horizontal flow sedimentation tanks and the principle of ideal sedimentation show that the removal rate of suspended particles is only related to the sedimentation area of ​​the sedimentation tank, and not to the tank depth. Therefore, under the condition of a fixed sedimentation tank volume, the shallower the tank, the larger the sedimentation area, and the higher the removal rate of suspended particles; this is the "shallow tank sedimentation principle." For this reason, dividing the sedimentation tank into multiple layers can multiply the treatment capacity of the sedimentation tank within a fixed area. However, traditional multi-layer sedimentation tanks have certain difficulties in discharging sludge. To solve the sludge discharge problem, the traditional horizontal baffles are generally replaced with inclined baffles, with a reserved sludge discharge area, thus becoming an inclined plate sedimentation tank. Using tubular components (forming hexagonal or quadrilateral cross-sections) instead of inclined plates creates an inclined tube sedimentation tank.

[0004] Because the inclined plate (or inclined tube) packing material in inclined plate / inclined tube sedimentation tanks must be installed at an angle, some sections of the sedimentation tank cannot be fitted with this material, especially in circular tanks where the effective installation space is even smaller. Furthermore, existing inclined plate (or inclined tube) packing materials are mostly installed side-by-side, creating a certain degree of short-circuiting, and the solid-liquid separation effects cannot be superimposed. Additionally, the dispersed sludge at the bottom of the inclined plate (or inclined tube) packing material makes it difficult to collect the sludge in the inclined plate (or inclined tube) sedimentation tank.

[0005] In existing technologies, to address the shortcomings of inclined plates or tubes in sedimentation tanks, one approach is to add flocculants to the sedimentation tank to promote the binding of suspended solids in the turbid water and accelerate sedimentation. However, the continuous use of flocculants leads to high reagent costs, and improper control of flocculant dosage can affect subsequent treatment processes and pose potential hazards to the environment and the health of operators. Another approach involves staggered arrangement of multiple layers of inclined tubes or plates within the sedimentation tank to increase the sedimentation area and shorten the settling distance of particles, thereby improving overall sedimentation efficiency. However, staggered multi-layered inclined tubes or plates are not only difficult to install, but also prone to clogging after a period of use due to their small spacing, increasing the difficulty and cost of cleaning and maintenance. In addition, longitudinal guide (or partition) walls can be installed in the sedimentation tank to make the water flow in the tank more stable, effectively avoiding unfavorable water flow phenomena such as short-circuiting, deflection, and density flow, thereby reducing the interference of water flow on particle sedimentation and improving sedimentation efficiency. However, since the design and construction of guide (or partition) walls require precise calculations and careful construction by professional technicians, unreasonable design or poor construction quality may aggravate water flow turbulence. Moreover, adding guide (or partition) walls will divide the sedimentation tank into multiple sedimentation chambers, thereby increasing the difficulty of cleaning sediment. Utility Model Content

[0006] To address the problems mentioned in the background section, this invention provides a bucket-shaped inclined plate sedimentation tank that is simple in structure, has high sedimentation efficiency, good sludge removal effect, and is not prone to clogging.

[0007] The bucket-shaped inclined plate sedimentation tank of this utility model is implemented as follows: it includes a tank body, an inlet pipe, and an outlet pipe. The outlet of the inlet pipe is located at the lower part of the tank body, and the inlet of the outlet pipe is located at the upper part of the tank body. At least two bucket-shaped inclined plates are fixedly connected in series from bottom to top between the outlet of the inlet pipe and the inlet of the outlet pipe in the tank body. The bucket-shaped inclined plate is an inverted conical shell with an open upper part. The bucket-shaped inclined plate includes a bucket wall and a bucket bottom opening. The bucket bottom opening is located at the bottom end of the bucket-shaped inclined plate. The bucket wall is circumferentially provided with a number of bucket wall openings extending vertically. The outer edge of the top of the bucket wall is fixedly connected to the tank body. A sludge discharge pipe is also provided at the bottom end of the tank body.

[0008] Furthermore, the bucket-shaped inclined plate is an inverted conical shell or an inverted pyramidal shell, and the bucket wall forms a slope greater than 30° and less than 70° with the horizontal plane.

[0009] Furthermore, the hopper wall opening is a straight opening aligned with the direction of sludge sliding down the inner side of the hopper wall, and the total opening area of ​​each hopper wall opening on the hopper-shaped inclined plate is at least three times greater than the opening area of ​​the hopper bottom opening.

[0010] Furthermore, the openings of the bucket walls on adjacent bucket-shaped inclined plates spaced apart from bottom to top within the pool are staggered.

[0011] Furthermore, the edge of the bucket wall opening is provided with a flange protruding inward towards the bucket-shaped inclined plate. The bottom end of the bucket opening of the upper bucket-shaped inclined plate in the pool is lower than the top end of the bucket wall opening of the adjacent lower bucket-shaped inclined plate, and the bottom end of the bucket opening of the bottom bucket-shaped inclined plate in the pool is higher than the inlet of the sludge discharge pipe.

[0012] Furthermore, a downward-extending mud guide pipe is fixedly provided at the bottom end of the bucket-shaped inclined plate. The bottom end of the mud guide pipe of the upper bucket-shaped inclined plate in the pool is lower than the bottom end of the bucket wall opening of the adjacent lower bucket-shaped inclined plate, and the bottom end of the mud guide pipe of the bottom bucket-shaped inclined plate in the pool is lower than the opening of the water inlet pipe.

[0013] Furthermore, the top of the bucket-shaped inclined plate is provided with a bucket edge extending horizontally outward, and the inner wall of the pool is provided with several support plates at intervals from bottom to top, with the bucket edge of the bucket-shaped inclined plate fixed to the corresponding support plates.

[0014] Furthermore, an overflow weir is provided in the pool body between the top bucket-shaped inclined plate and the outlet pipe.

[0015] Furthermore, the pool body is provided with a conical sedimentation section below the water inlet pipe, and a sludge discharge pipe and a sludge discharge valve are provided at the bottom of the conical sedimentation section.

[0016] This utility model has the following beneficial effects:

[0017] 1. This utility model optimizes the packing structure in the sedimentation tank by cascading inverted conical bucket-shaped inclined plates in series within the tank, effectively utilizing the vertical space of the sedimentation tank to achieve the superposition of multiple sedimentation areas within the same floor area, thereby increasing the effective sedimentation area. Moreover, by setting the bucket wall openings in a staggered manner on the bucket-shaped inclined plates to form a zigzag sedimentation path, not only is the flow pattern of water in the tank more reasonable, but the flow velocity of turbid water is also slowed down, and the settling distance of particles in turbid water is extended, thereby reducing the phenomenon of water flow short-circuiting and allowing the solid-liquid separation effect to be superimposed layer by layer. Therefore, it can significantly improve the sedimentation efficiency compared with the traditional parallel inclined plate structure.

[0018] 2. The hopper wall opening of this utility model adopts a straight strip opening consistent with the direction of sludge sliding, which can slow down or even avoid the disturbance of the sliding sludge by the upward flowing turbid water. Moreover, combined with the relative position design of the bottom opening and the hopper wall opening of the adjacent hopper-shaped inclined plates, and the fact that the total opening area of ​​each hopper wall opening on the hopper-shaped inclined plate is at least 3 times greater than the opening area of ​​the bottom opening, a good sludge discharge gradient is formed. This facilitates the sliding and concentration of sludge, solves the problem of sludge dispersion and difficulty in collection in traditional inclined plate (inclined tube) sedimentation tanks, and reduces the amount of water passing through the bottom opening of the hopper, further slowing down the disturbance of turbid water to the sludge. This not only improves the solid-liquid separation effect, but also avoids sludge accumulation and blockage.

[0019] 3. The bucket-shaped inclined plate of this utility model adopts an inverted conical shell structure with an open top, which breaks through the limitation of traditional inclined plates / inclined tubes that need to be installed at an angle. It is not only suitable for rectangular sedimentation tanks, but also particularly suitable for circular sedimentation tanks, thus enhancing its adaptability to sedimentation tanks. Moreover, the space utilization rate is significantly improved compared with traditional inclined plate / inclined tube sedimentation tanks, and the number of layers of the bucket-shaped inclined plate can be flexibly adjusted according to the treatment volume and the properties of the treated solution, thereby improving the flexibility of application.

[0020] 4. This utility model, through its unique bucket-shaped inclined plate design, has a larger internal space compared to the traditional staggered multi-layered inclined tubes / plates. This makes it less prone to clogging problems caused by insufficient distance and accumulation of sediment and impurities, reducing the difficulty and cost of cleaning and maintenance, and ensuring that the sedimentation tank can operate stably for a long time.

[0021] In summary, this utility model has the characteristics of simple structure, high sedimentation efficiency, strong adaptability, and good sludge removal effect. Attached Figure Description

[0022] Figure 1 This is one of the structural schematic diagrams of this utility model;

[0023] Figure 2 This is a schematic diagram of the bucket-shaped inclined plate structure of this utility model;

[0024] Figure 3 yes Figure 2 Top view;

[0025] Figure 4 This is the second structural schematic diagram of this utility model;

[0026] In the diagram, 1-pool body, 2-inlet pipe, 3-outlet pipe, 4-bucket-shaped inclined plate, 41-bucket wall, 42-bucket bottom opening, 43-bucket wall opening, 44-sludge guide pipe, 45-bucket edge, 5-sludge discharge pipe, 6-support plate, 7-overflow weir, 8-conical sedimentation section. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this does not limit the present invention in any way. Any changes or improvements made based on the teachings of the present invention shall fall within the protection scope of the present invention.

[0028] like Figures 1 to 4As shown, this utility model includes a pool body 1, an inlet pipe 2, and an outlet pipe 3. The outlet of the inlet pipe 2 is located at the lower part of the pool body 1, and the inlet of the outlet pipe 3 is located at the upper part of the pool body 1. At least two bucket-shaped inclined plates 4 are fixedly connected in series from bottom to top between the outlet of the inlet pipe 2 and the inlet of the outlet pipe 3 inside the pool body 1. The bucket-shaped inclined plate 4 is an inverted conical shell with an open upper part. The bucket-shaped inclined plate 4 includes a bucket wall 41 and a bucket bottom opening 42. The bucket bottom opening 42 is located at the bottom end of the bucket-shaped inclined plate 4. The bucket wall 41 is circumferentially provided with a plurality of bucket wall openings 43 extending vertically. The outer edge of the top of the bucket wall 41 is fixedly connected to the pool body 1. A sludge discharge pipe 5 is also provided at the bottom end of the pool body 1.

[0029] The bucket-shaped inclined plate 4 is an inverted conical shell or an inverted pyramidal shell, and the bucket wall 41 forms a slope greater than 30° and less than 70° with the horizontal plane.

[0030] The bucket wall opening 43 is a straight opening that is consistent with the direction of sludge sliding on the inner side of the bucket wall 41. The total opening area of ​​each bucket wall opening 43 on the bucket-shaped inclined plate 4 is at least 3 times greater than the opening area of ​​the bucket bottom opening 42.

[0031] The openings 43 of the bucket walls on the adjacent bucket-shaped inclined plates 4 arranged at intervals from bottom to top inside the pool body 1 are staggered.

[0032] The edge of the bucket wall opening 43 is provided with a flange that protrudes into the inside of the bucket-shaped inclined plate 4. The bottom end of the bucket bottom opening 42 of the upper bucket-shaped inclined plate 4 in the pool body 1 is lower than the top end of the bucket wall opening 43 of the adjacent lower bucket-shaped inclined plate 4. The bottom end of the bucket bottom opening 42 of the bottom bucket-shaped inclined plate 4 in the pool body 1 is higher than the inlet of the sludge discharge pipe 5.

[0033] The bottom end of the bottom opening 42 of the bucket-shaped inclined plate 4 is fixedly provided with a downwardly extending mud guide pipe 44. The bottom end of the mud guide pipe 44 of the upper bucket-shaped inclined plate 4 in the pool body 1 is lower than the bottom end of the bucket wall opening 43 of the adjacent lower bucket-shaped inclined plate 4. The bottom end of the mud guide pipe 44 of the bottom bucket-shaped inclined plate 4 in the pool body 1 is lower than the opening of the water inlet pipe 2.

[0034] The top of the bucket-shaped inclined plate 4 is also provided with a bucket edge 45 extending horizontally outward. The inner wall of the pool body 1 is provided with several support plates 6 at intervals from bottom to top, and the bucket edge 45 of the bucket-shaped inclined plate 4 is fixed on the corresponding support plate 6.

[0035] An overflow weir 7 is provided between the top bucket-shaped inclined plate 4 and the outlet pipe 3 inside the pool body 1.

[0036] The pool body 1 has a conical sedimentation section 8 below the water inlet pipe 2, and the bottom of the conical sedimentation section 8 is provided with a sludge discharge pipe 5 and a sludge discharge valve.

[0037] The working principle and process of this utility model:

[0038] like Figures 1 to 3 As shown, based on the turbid water treatment capacity and properties of the sedimentation tank, multiple layers of support plates 6 are installed on the inner wall of the tank body 1 from bottom to top. Then, the processed bucket-shaped inclined plates 4 are fixed layer by layer on the support plates 6 inside the tank body 1, so that the bucket-shaped inclined plates 4 inside the tank body 1 form a series stacked structure.

[0039] During operation, turbid water enters the tank 1 through the inlet pipe 2. The turbid water flows from bottom to top through the openings 43 of the bucket walls of each bucket-shaped inclined plate 4 (a small amount flows upward from the bottom opening 42). The suspended solids in the turbid water gradually settle onto the bucket walls 41 of each layer of bucket-shaped inclined plates 4, and then slide down to the bottom opening 42 under the action of gravity. They then fall layer by layer through the bottom opening 42 until they fall into the conical sedimentation section 8. Finally, after a certain period of sedimentation, the sludge in the conical sedimentation section 8 is opened, and the sludge is discharged from the sludge discharge pipe 5. The supernatant that has passed through each layer of bucket-shaped inclined plates 4 finally overflows from the overflow weir 7 and is discharged from the outlet pipe 3.

[0040] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A bucket-shaped inclined plate sedimentation tank, comprising a tank body (1), an inlet pipe (2), and an outlet pipe (3), wherein the outlet of the inlet pipe (2) is located at the lower part of the tank body (1), and the inlet of the outlet pipe (3) is located at the upper part of the tank body (1); characterized in that: The pool body (1) has at least two bucket-shaped inclined plates (4) fixedly connected from bottom to top between the outlet of the inlet pipe (2) and the inlet of the outlet pipe (3). The bucket-shaped inclined plate (4) is an inverted conical shell with an open upper part. The bucket-shaped inclined plate (4) includes a bucket wall (41) and a bucket bottom opening (42). The bucket bottom opening (42) is located at the bottom end of the bucket-shaped inclined plate (4). The bucket wall (41) is circumferentially provided with a number of bucket wall openings (43) extending vertically. The top outer edge of the bucket wall (41) is fixedly connected to the pool body (1). The bottom end of the pool body (1) is also provided with a sludge discharge pipe (5).

2. The inclined lamella settler according to claim 1, characterized in that The bucket-shaped inclined plate (4) is an inverted conical shell or an inverted pyramidal shell, and the bucket wall (41) forms a slope greater than 30° and less than 70° with the horizontal plane.

3. The inclined lamella clarifier according to claim 1, characterized in that: The bucket wall opening (43) is a straight opening that is consistent with the direction of sludge sliding on the inner side of the bucket wall (41). The total opening area of ​​each bucket wall opening (43) on the bucket-shaped inclined plate (4) is at least 3 times greater than the opening area of ​​the bucket bottom opening (42).

4. The inclined lamella settler according to claim 3, characterized in that The openings (43) of the bucket walls on the adjacent bucket-shaped inclined plates (4) arranged at intervals from bottom to top in the pool body (1) are staggered.

5. The inclined lamella settler according to claim 3, characterized in that: The edge of the bucket wall opening (43) is provided with a flange that protrudes into the inside of the bucket-shaped inclined plate (4). The bottom end of the bucket bottom opening (42) of the upper bucket-shaped inclined plate (4) in the pool body (1) is lower than the top end of the bucket wall opening (43) of the adjacent lower bucket-shaped inclined plate (4). The bottom end of the bucket bottom opening (42) of the bottom bucket-shaped inclined plate (4) in the pool body (1) is higher than the inlet of the sludge discharge pipe (5).

6. The bucket-shaped inclined plate sedimentation tank according to claim 3, characterized in that: The bottom end of the bottom opening (42) of the bucket-shaped inclined plate (4) is fixedly provided with a downward-extending mud guide pipe (44). The bottom end of the mud guide pipe (44) of the upper bucket-shaped inclined plate (4) in the pool body (1) is lower than the bottom end of the bucket wall opening (43) of the adjacent lower bucket-shaped inclined plate (4). The bottom end of the mud guide pipe (44) of the bottom bucket-shaped inclined plate (4) in the pool body (1) is lower than the opening of the water inlet pipe (2).

7. The inclined lamella settler according to any of claims 1 to 6, characterized in that The top of the bucket-shaped inclined plate (4) is also provided with a bucket edge (45) extending horizontally outward. The inner wall of the pool body (1) is provided with several support plates (6) at intervals from bottom to top. The bucket edge (45) of the bucket-shaped inclined plate (4) is fixed on the corresponding support plate (6).

8. The inclined lamella settler according to any of claims 1 to 6, characterized in that An overflow weir (7) is provided between the top bucket-shaped inclined plate (4) and the outlet pipe (3) inside the pool body (1).

9. The inclined lamella settler according to any of claims 1 to 6, characterized in that: The pool body (1) is provided with a conical sedimentation section (8) below the water inlet pipe (2), and a sludge discharge pipe (5) and a sludge discharge valve are provided at the bottom of the conical sedimentation section (8).

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