A sludge discharge device for water treatment

Abstract

The utility model relates to water treatment technical field especially relates to a kind of sludge discharge device for water treatment, and the periphery of sludge discharge pipe in each flocculator is connected with a support assembly and a set of sludge collecting tube, and the support assembly supports sludge discharge pipe in flocculator bottom, and one end of each set of sludge collecting tube is communicated in sludge discharge pipe, and the other end of each set of sludge collecting tube extends to flocculator bottom, and keep gap with flocculator bottom.It has beneficial effect, the sludge discharge device of the utility model is communicated with multiple sets of sludge collecting tube in the periphery of sludge discharge pipe, effectively avoids the problem of uneven water distribution caused by sludge discharge pipe pipeline pressure attenuation along the way, makes each sludge collecting tube suction force tend to be uniform, significantly improves overall sludge discharge efficiency;At the same time, cooperate with support assembly to erect sludge discharge pipe stably, both ensure structure stable, and make sludge water can smoothly enter sludge collecting tube, effectively eliminate the sludge discharge dead zone formed by the large gap between traditional perforated sludge discharge pipe and flocculator bottom.

Description

Technical Field

[0001] This utility model relates to the field of water treatment technology, and in particular to a sludge removal device for water treatment. Background Technology

[0002] In conventional water treatment processes, coagulation and flocculation are crucial preliminary steps for removing suspended and colloidal impurities from water. By adding coagulants to the raw water and ensuring thorough mixing, the stable state of colloids is disrupted, causing them to aggregate and form micro-flocs with separation potential. The core function of the flocculation tank is to create a suitable hydraulic gradient for the continued growth and collision of these micro-flocs, allowing them to coalesce into larger, denser flocs (commonly known as "lumps"), thus creating the necessary conditions for subsequent sedimentation. The operation of the flocculation tank also requires the participation of a sludge discharge pipe. The efficiency and stability of sludge discharge not only affect the operating conditions of the flocculation tank itself but also directly impact the load on the sedimentation unit and the final effluent quality, making it a vital link in ensuring the smooth operation of the entire treatment chain.

[0003] The most widely used sludge removal device currently is the perforated sludge removal pipe system. Its typical structure consists of a single horizontally laid main sludge removal pipe with one or more rows of perforations spaced evenly along its length. The end of the pipe connects to a sludge removal valve. Its working principle relies on the negative pressure created in the pipe when the sludge removal valve is opened, or on the hydrostatic pressure within the pool, to force the sludge-water mixture at the bottom of the pool through the perforations into the pipe and out. However, the following problems still exist: First, a severe problem of uneven hydraulic distribution. Due to frictional resistance losses along the pipe, the pressure within the pipe decreases progressively from the far end to the sludge removal valve. This results in strong suction, high flow velocity, and large sludge removal volume near the valve, while the suction of the perforations far from the valve is weak, with insufficient or even complete failure in sludge removal capacity, leading to a significant amount of residual water in the flocculation tank far from the valve. Second, a dead zone exists at the bottom of the pool. Due to limitations in the installation support height and the pipe structure itself, a certain gap inevitably exists between the bottom of the sludge removal pipe and the bottom of the flocculation tank. The sludge in this area is difficult to be effectively sucked out of the holes, forming a stubborn sludge layer.

[0004] Therefore, there is an urgent need for a sludge removal device for water treatment that can prevent uneven hydraulic distribution and the formation of dead zones in sludge removal. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a sludge discharge device for water treatment, which solves the technical problems of uneven hydraulic distribution and the formation of dead zones in the existing sludge discharge devices.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0009] This utility model provides a sludge discharge device for water treatment, including a sludge discharge pipe that extends laterally through the bottom of multiple flocculation tanks. It also includes a sludge outlet pipe connected to the sludge outlet end of the sludge discharge pipe, an end cap located at the distal end of the sludge discharge pipe opposite to the sludge outlet end, multiple support components, and multiple sets of sludge collecting tubes connected to the sides of the sludge discharge pipe. Each flocculation tank has a support component and a set of sludge collecting tubes connected to the periphery of the sludge discharge pipe. One end of the support component is connected to the sludge discharge pipe, supporting the sludge discharge pipe at the bottom of the flocculation tank. One end of each set of sludge collecting tubes is connected to the sludge discharge pipe, and the other end of each set extends downwards to the bottom of the flocculation tank, maintaining a gap with the bottom of the flocculation tank.

[0010] Optionally, the support assembly includes a fixed sleeve and a support rod; the fixed sleeve is fitted into the middle of the sludge discharge pipe, the support rod extends vertically, one end of the support rod is fixed to the fixed sleeve, and the other end of the support rod abuts against the bottom of the flocculation tank.

[0011] Optionally, the number of each group of mud collecting tubes is even, and each group of mud collecting tubes is symmetrically distributed about the vertical plane in which the mud collecting tubes are located.

[0012] Optionally, the sludge collecting tube includes a first straight tube, a first curved tube, and a second straight tube that are connected to each other in sequence; the first straight tube extends horizontally and one end of the first straight tube is connected to the sludge discharge tube, the second straight tube extends vertically and the lower end of the second straight tube maintains a gap with the bottom of the flocculation tank, and the lower end of the second straight tube is also provided with a filter screen.

[0013] Optionally, all sludge collecting capillaries located in the same flocculation tank have the same diameter; and the closer they are to the sludge discharge pipe, the smaller the diameter of the sludge collecting capillaries.

[0014] Optionally, the distance between the sludge collection tube and the bottom of the flocculation tank is in the range of 5mm-15mm.

[0015] Optionally, the sludge discharge pipe and the sludge outlet pipe are connected to each other by two flanges, and a sludge discharge valve is also connected between the two flanges.

[0016] Optionally, the diameter of the sludge discharge pipe is in the range of 80mm-150mm; the diameter of the sludge collection tube is in the range of 20mm-32mm.

[0017] Optionally, the sludge discharge pipe is a second bend, and the sludge discharge end of the second bend, which is not connected to the sludge discharge pipe, is lower than the bottom of the flocculation tank.

[0018] Optionally, the portion of the sludge discharge pipe that passes through the side wall of the flocculation tank is also fitted with an annular hoop, the length of which is greater than the thickness of the side wall.

[0019] (III) Beneficial Effects

[0020] The beneficial effects of this utility model are as follows: This utility model provides a sludge removal device for water treatment. Each sludge removal pipe in the flocculation tank is connected to a support component and a set of sludge collecting tubes. One end of the support component is connected to the sludge removal pipe, supporting it at the bottom of the flocculation tank. One end of each set of sludge collecting tubes is connected to the sludge removal pipe, and the other end extends downwards to the bottom of the flocculation tank, maintaining a gap with the bottom. Compared to existing technologies, this utility model's sludge removal device, by connecting multiple sets of sludge collecting tubes around the sludge removal pipe, effectively avoids the problem of uneven hydraulic distribution caused by the pressure attenuation along the pipe's path, making the suction of each sludge collecting tube more uniform and significantly improving the overall sludge removal efficiency. Simultaneously, the support component stably supports the sludge removal pipe, ensuring structural stability and allowing the mud and water to smoothly enter the sludge collecting tubes, effectively eliminating the dead zone formed by the large gap between the traditional perforated sludge removal pipe and the bottom of the flocculation tank. Attached Figure Description

[0021] Figure 1 This is a front view of Example 1, in which the front wall of the flocculation tank is transparent;

[0022] Figure 2 for Figure 1 The flocculation tank shown is a cross-sectional view taken along the vertical plane containing the support components;

[0023] Figure 3 for Figure 1 The sectional view shown is taken along the vertical plane containing the flange;

[0024] Figure 4 for Figure 1 A top view of a flocculation tank is shown;

[0025] Figure 5 for Figure 1 A front view of the supporting components is shown;

[0026] Figure 6 This is a partial sectional view of Example 2 taken along the vertical plane containing the axis of the sludge discharge pipe.

[0027] Explanation of reference numerals in the attached figures

[0028] 1: Flocculation tank; 2: Sludge discharge pipe; 3: Sludge outlet pipe; 4: End cap; 5: Support assembly; 51: Fixing sleeve; 52: Support rod; 6: Sludge collection tube; 61: First straight pipe; 62: First bend; 63: Second straight pipe; 7: Flange; 8: Sludge discharge valve; 9: Annular hoop. Detailed Implementation

[0029] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Example 1:

[0031] Reference Figures 1 to 5 This embodiment proposes a sludge discharge device for water treatment, which can discharge sludge and water from flocculation tank 1. Specifically, the sludge discharge device for water treatment in this embodiment includes a sludge discharge pipe 2, which transversely penetrates the bottom of multiple flocculation tanks 1. The sludge discharge pipe 2 includes a sludge outlet pipe 3, an end cap 4, a support assembly 5, and a sludge collection tube 6, as detailed below.

[0032] In this embodiment, the sludge discharge pipe 2 extends laterally, penetrating the bottom area of ​​multiple flocculation tanks 1 in a horizontal direction, forming a main sludge discharge channel spanning multiple flocculation tanks 1. The sludge discharge end of the sludge discharge pipe 2 is connected to the sludge discharge pipe 3, which serves as the terminal channel for sludge discharge and can be connected to the subsequent sludge treatment system. The distal end of the sludge discharge pipe 2 opposite to the sludge discharge end is fixedly connected to an end cap 4 by welding, bonding, or screwing. The end cap 4 seals the end of the sludge discharge pipe 2, preventing leakage of mud and water from the pipe end fixedly connected to the end cap 4, ensuring that all mud and water entering the sludge discharge pipe 2 are discharged from the sludge discharge pipe 3.

[0033] Each sludge discharge pipe 2 inside the flocculation tank 1 is connected to a support component 5 and a set of sludge collection tubes 6. One end of the support component 5 is fixedly connected to the wall of the sludge discharge pipe 2 by means of bonding, sleeve, or screwing, and the other end of the support component 5 abuts against the bottom of the flocculation tank 1 to support the sludge discharge pipe 2. Through the support of the support component 5, the sludge discharge pipe 2 is suspended at a preset height at the bottom of the flocculation tank 1 and is relatively parallel to the bottom of the flocculation tank 1. This ensures that the sludge discharge pipe 2 is installed stably and also reserves sufficient space for sludge collection below. The preset height of the sludge discharge pipe 2 is greater than or equal to 300mm.

[0034] Each set of sludge collecting capillaries 6 is spaced apart along the length of the sludge discharge pipe 2. One end of each sludge collecting capillary 6 is connected to the side of the sludge discharge pipe 2, ensuring smooth flow of sludge and water within the capillaries 6. The other end of each capillary 6 extends downwards until it reaches near the bottom of the flocculation tank 1, with a predetermined gap between its end and the bottom of the flocculation tank 1. This predetermined gap design allows the flocculent sludge deposited at the bottom of the tank to smoothly enter the sludge collecting capillaries 6, while preventing the end of the capillaries 6 from being blocked by the sludge at the bottom of the tank, and reducing scratching damage to the bottom of the flocculation tank 1. Through the coordinated arrangement of the support component 5 and the sludge collecting capillaries 6, the sludge discharge pipe 2 can be stably installed while efficiently collecting sludge from each flocculation tank 1 through multiple sets of sludge collecting capillaries 6, thus improving sludge discharge efficiency. Moreover, the sludge collecting tube 6 has a small aperture, so the amount of mud and water entering the sludge discharge tube 2 from the sludge collecting tube 6 in the same amount of time is the same, avoiding the problem of uneven hydraulic distribution. In addition, the sludge collecting tube 6 extends to the bottom of the flocculation tank 1, which can remove the mud and water deposited at the bottom of the flocculation tank 1 earlier, thereby avoiding the formation of a dead zone for sludge discharge.

[0035] In summary, the sludge discharge device effectively avoids the problem of uneven hydraulic distribution caused by the pressure attenuation along the pipe of the sludge discharge pipe 2 by connecting multiple sets of sludge collecting tubes 6 around the sludge discharge pipe 2, making the suction of each sludge collecting tube 6 more uniform and significantly improving the overall sludge discharge efficiency. At the same time, the sludge discharge pipe 2 is stably erected with the support component 5, which not only ensures the structural stability, but also allows the mud and water to enter the sludge collecting tubes 6 smoothly, effectively eliminating the dead zone in sludge discharge caused by the large gap between the traditional perforated sludge discharge pipe 2 and the bottom of the flocculation tank 1.

[0036] Furthermore, the support component 5 includes a fixing sleeve 51 and a support rod 52, which has a simple structure and is easy to install. The fixing sleeve 51 is fitted onto the middle of the sludge discharge pipe 2 and is tightly fitted and fixed to the outer wall of the sludge discharge pipe 2 to ensure the integrity of the structure after connection. Specifically, the fixing sleeve 51 is a clamp adapted to the pipe diameter of the sludge discharge pipe 2. By screwing in the fixing bolt of the clamp, the fixing sleeve 51 can be fixedly connected to the sludge discharge pipe 2. The support rod 52 extends vertically, and one end is fixedly connected to the outer wall of the fixing sleeve 51 by welding, screwing, or clamping; the other end of the support rod 52 directly abuts against the bottom of the flocculation tank 1, forming a stable support through surface contact. Through the synergistic effect of the fixing sleeve 51 and the support rod 52, reliable vertical support is provided for the sludge discharge pipe 2, so that the sludge discharge pipe 2 always remains suspended at the bottom of the flocculation tank 1 at a preset height. This not only avoids displacement of the sludge discharge pipe 2 due to its own weight or mud and water impact, but also reserves sufficient installation and sludge collection space for the sludge collection tube 6 below.

[0037] Furthermore, to better extract sludge from the bottom of the flocculation tank 1, each set of sludge collecting capillaries 6 has an even number of tubes, symmetrically distributed along the vertical plane containing the axis of the sludge discharge pipe 2. This symmetrical layout ensures the sludge collecting capillaries 6 are evenly distributed on both sides of the sludge discharge pipe 2, guaranteeing balanced sludge collection in all directions. This expands the coverage area of ​​each set of sludge collecting capillaries 6 while avoiding blind spots in localized areas, allowing sludge from different locations within the flocculation tank 1 to smoothly enter the sludge collecting capillaries 6, further improving the uniformity and thoroughness of sludge discharge and reducing sludge accumulation at the bottom of the tank.

[0038] Furthermore, to facilitate the installation of the mud collecting capillary 6, the mud collecting capillary 6 adopts a segmented structure, including a first straight pipe 61, a first bend 62, and a second straight pipe 63 connected in sequence. The pipe segments can be fixedly connected by screws, clamps, or adhesives to ensure the sealing and structural strength of the connection points. The first straight pipe 61 extends horizontally, with one end connected to the side wall of the mud discharge pipe 2, forming the outlet for mud and water to be discharged from the mud collecting capillary 6. This horizontal arrangement facilitates manual installation and reduces resistance to mud and water flow, improving flow efficiency. The first bend 62 connects to the end of the first straight pipe 61 furthest from the mud discharge pipe 2. The structure of the first bend 62 achieves a transition in the pipe direction, providing a reasonable detour for the subsequent vertical extension of the second straight pipe 63. The second straight pipe 63 extends vertically downwards, with its lower end reaching near the bottom of the flocculation tank 1, maintaining a preset gap with the tank bottom. This gap can be flexibly adjusted according to the depth of the flocculation tank 1 and the sludge deposition characteristics, ensuring that the sludge at the bottom of the tank can smoothly enter the pipe while avoiding direct contact between the pipe end and the tank bottom, which could cause blockage. A filter screen is fitted at the lower end of the second straight pipe 63. The filter screen is made of stainless steel, and its mesh size is adapted to the particle size of the flocculent sludge. It is selected according to the particle size of the sludge in the flocculation tank 1, effectively intercepting large, incompletely flocculated impurities and other impurities (such as small fish) in the wastewater, preventing them from entering the sludge collection pipe 6 and the subsequent sludge discharge pipe 2 and causing blockage, while not affecting the normal passage of flocculent sludge.

[0039] Furthermore, in order to balance the discharge rate of sludge and water in different flocculation tanks 1, all sludge collection capillary tubes 6 inside the same flocculation tank 1 adopt the same diameter specification to ensure that the flow capacity of each sludge collection capillary tube 6 within a single tank is consistent, so that the sludge collection rate in different areas of the tank is balanced, and to avoid local sludge collection being too fast or sludge residue remaining.

[0040] In different flocculation tanks 1, the diameter of the sludge collecting capillary 6 exhibits a gradient variation: taking the sludge discharge pipe 3 as a reference, the closer the sludge collecting capillary 6 is to the sludge discharge pipe 3, the smaller its diameter; the farther the distance, the larger the diameter. This gradient pipe diameter design can specifically offset the pressure attenuation along the sludge discharge pipe 2, preventing excessive pressure in the area near the sludge discharge pipe 3 from causing excessively fast water flow velocity in the sludge collecting capillary 6, which could erode and damage the flocs. At the same time, it ensures that the sludge collecting capillary 6 in the distant flocculation tank 1 has sufficient flow, ensuring that the sludge discharge efficiency and effect of each flocculation tank 1 tend to be uniform.

[0041] Furthermore, to discharge more sludge and water from the flocculation tank 1, the sludge collecting capillary 6 is positioned close to the bottom of the flocculation tank 1, with the distance between it and the bottom of the flocculation tank 1 ranging from 5mm to 15mm. If the distance between the sludge collecting capillary 6 and the bottom of the flocculation tank 1 is too small, slight sludge accumulation or impurity buildup at the bottom of the flocculation tank 1 can easily cause blockage at the end of the sludge collecting capillary 6, affecting the continuity of sludge discharge. If the distance between the sludge collecting capillary 6 and the bottom of the flocculation tank 1 is too large, a dead zone for sludge will be formed between the bottom of the tank and the end of the capillary, making it impossible to efficiently collect the deposited flocculent sludge. Limiting the distance between the sludge collecting capillary 6 and the bottom of the flocculation tank 1 to this range ensures that the sludge at the bottom of the tank smoothly enters the sludge collecting capillary 6 under the action of gravity and negative pressure inside the capillary, while avoiding direct contact between the capillary end and the bottom of the tank, which could cause wear or blockage. Combined with the filter screen structure at the end, this further improves the stability and reliability of the sludge discharge process.

[0042] Specifically, the diameter of the sludge discharge pipe 2 is between 80mm and 150mm, which can accommodate the mud-water mixture flowing into each set of sludge collecting capillary tubes 6, ensuring smooth and unobstructed water flow within the pipe, while also being compatible with the installation space of a conventional flocculation tank 1, avoiding structural layout limitations due to excessively large pipe diameters. Simultaneously, the diameter of this sludge discharge pipe 2 matches the friction-pressure characteristics of the sludge discharge system, providing a stable pressure foundation for the subsequent gradient installation of the sludge collecting capillary tubes 6.

[0043] The diameter of the sludge collecting capillary 6 is between 20mm and 32mm, and its diameter has been verified by both floc particle size and hydraulic flow velocity. An excessively large diameter can lead to insufficient flow velocity within the pipe, making it unable to effectively carry floc sludge; an excessively small diameter will increase water flow resistance, potentially eroding and damaging unformed flocs and making the pipe prone to clogging by impurities. Limiting it to this range ensures a reasonable flow distribution ratio with the main channel of the sludge discharge pipe 2, and, combined with the spacing at the ends and the filter screen design, achieves efficient sludge collection. It also accommodates the gradient diameter adjustment requirements of the sludge collecting capillary 6 at different locations, ensuring stable sludge discharge efficiency at both the near and far ends. Verification using the Hayzen-Williams formula and the local head calculation formula determined the appropriate diameter of the sludge collecting capillary 6 for each flocculation tank 1.

[0044] Furthermore, the mud discharge pipe 2 and the mud outlet pipe 3 are connected to each other by flange 7, and a mud discharge valve 8 is also connected between the mud discharge pipe 2 and the mud outlet pipe 3. Thus, two flanges 7 are provided at the connection between the mud discharge pipe 2 and the mud outlet pipe 3. The two flanges 7 are screwed to both ends of the mud discharge valve 8. The mud discharge valve 8 is commonly used in the prior art, and will not be described in detail here.

[0045] Furthermore, the sludge discharge pipe 3 is a second bend pipe with a bending angle of 90 degrees. One end of the second bend pipe is sealed and connected to the sludge discharge end of the sludge discharge pipe 2, forming a channel for the discharge of the mud-water mixture. The other end serves as the sludge discharge end not connected to the sludge discharge pipe 2, and after bending, it is lower than the plane of the bottom of the flocculation tank 1. This bending layout and height design can form a natural siphon phenomenon by utilizing gravitational potential energy. That is, by utilizing the fact that the height of the sludge discharge end of the second bend pipe not connected to the sludge discharge pipe 2 is lower than the bottom of the flocculation tank 1, and the sludge discharge device is in a sealed state without air entering during the sludge discharge process, a siphon phenomenon can be formed until the water level in the flocculation tank 1 is lower than the bottom of the sludge collecting tube 6, and air enters into the sludge discharge pipe 3, causing the siphon phenomenon to fail. Furthermore, the height difference between the sludge outlet end of the second bend, which is not connected to the sludge discharge pipe 2, and the bottom of the flocculation tank 1 can accelerate the flow of sludge and water in the sludge discharge pipe 3, preventing sludge and water from accumulating at the junction of the sludge discharge pipe 2 and the sludge discharge pipe 3. At the same time, it enhances the negative pressure suction effect of the sludge discharge system, providing auxiliary power for the sludge discharge of the distal sludge collection fine pipe 6. The sludge outlet end, which is set below the bottom of the tank, can also be easily connected to subsequent sludge conveying equipment or storage devices, eliminating the need for an additional booster pump, reducing system energy consumption, and ensuring the continuity of the sludge discharge process.

[0046] Example 2:

[0047] The difference between this embodiment and embodiment 1 is that this embodiment also includes an annular hoop 9, which is used to protect the sludge discharge pipe 2 as it passes through the side wall of the flocculation tank 1, as detailed below.

[0048] In this embodiment, to prevent the sludge discharge pipe 2 from vibrating and colliding with the side wall of the flocculation tank 1 during operation, the sludge discharge pipe 2 penetrates the side wall of the flocculation tank 1 through-wall section, with a ring-shaped clamp 9 tightly fitted around its outer wall. The axial length of the ring-shaped clamp 9 is greater than the thickness of the side wall, allowing it to extend to the inner and outer sides of the side wall at both ends after installation, forming a wrap-around fixing structure across the side wall. This length design not only completely covers the gap between the sludge discharge pipe 2 and the through-wall hole in the side wall, achieving a reliable seal through the double fit of the ring-shaped clamp 9 with the side wall and the sludge discharge pipe 2, preventing sewage leakage from the through-wall hole; it also disperses the weight of the sludge discharge pipe 2 itself and the local pressure on the side wall from the impact of the mud and water inside the pipe, preventing cracking and damage around the through-wall hole after long-term use, while providing additional radial support for the sludge discharge pipe 2, ensuring that its horizontal straightness is not affected by the constraint of the side wall. Specifically, the ring-shaped clamp 9 is a clamp joint commonly used in the prior art, which will not be elaborated on here.

[0049] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0050] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0051] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0052] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0053] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A sludge discharge device for water treatment, comprising a sludge discharge pipe (2) that transversely penetrates the bottom of a plurality of flocculation tanks (1), characterized in that: It also includes a mud discharge pipe (3) that connects to the mud discharge end of the mud discharge pipe (2), an end cap (4) located at the far end of the mud discharge pipe (2) opposite to the mud discharge end, multiple support components (5) and multiple sets of mud collection tubes (6) that connect to the side of the mud discharge pipe (2). Each of the sludge discharge pipes (2) in the flocculation tank (1) is connected to a support assembly (5) and a set of sludge collection tubes (6) on its periphery. One end of the support assembly (5) is connected to the sludge discharge pipe (2), and the support assembly (5) supports the sludge discharge pipe (2) at the bottom of the flocculation tank (1). One end of each set of sludge collection tubes (6) is connected to the sludge discharge pipe (2), and the other end of each set of sludge collection tubes (6) extends downward to the bottom of the flocculation tank (1) and maintains a gap with the bottom of the flocculation tank (1).

2. The sludge removal device for water treatment as described in claim 1, characterized in that: The support assembly (5) includes a fixing sleeve (51) and a support rod (52); The fixing sleeve (51) is fitted onto the middle part of the sludge discharge pipe (2), the support rod (52) extends vertically, one end of the support rod (52) is fixed to the fixing sleeve (51), and the other end of the support rod (52) abuts against the bottom of the flocculation tank (1).

3. The sludge removal device for water treatment as described in claim 1, characterized in that: The number of mud collecting tubes (6) in each group is even, and the mud collecting tubes (6) in each group are symmetrically distributed about the vertical plane in which the mud collecting tubes (6) are located.

4. The sludge removal device for water treatment as described in claim 3, characterized in that: The mud collecting tube (6) includes a first straight tube (61), a first bent tube (62), and a second straight tube (63) that are connected to each other in sequence. The first straight pipe (61) extends horizontally, and one end of the first straight pipe is connected to the sludge discharge pipe (2). The second straight pipe (63) extends vertically, and the lower end of the second straight pipe (63) maintains a gap with the bottom of the flocculation tank (1). The lower end of the second straight pipe (63) is also provided with a filter screen.

5. The sludge removal device for water treatment as described in claim 1, characterized in that: All the sludge collecting tubes (6) located in the same flocculation tank have the same diameter; and the closer they are to the sludge outlet tube (3), the smaller the diameter of the sludge collecting tube (6).

6. The sludge removal device for water treatment as described in claim 1, characterized in that: The distance between the sludge collecting tube (6) and the bottom of the flocculation tank (1) is in the range of 5mm-15mm.

7. The sludge removal device for water treatment as described in claim 1, characterized in that: The mud discharge pipe (2) and the mud outlet pipe (3) are connected to each other through two flanges (7), and a mud discharge valve is also connected between the two flanges (7).

8. The sludge removal device for water treatment as described in claim 1, characterized in that: The diameter of the sludge discharge pipe (2) is in the range of 80mm-150mm; the diameter of the sludge collection tube (6) is in the range of 20mm-32mm.

9. The sludge removal device for water treatment as described in claim 1, characterized in that: The sludge discharge pipe (3) is a second bend pipe, and the sludge discharge end of the second bend pipe that is not connected to the sludge discharge pipe (2) is lower than the bottom of the flocculation tank (1).

10. The sludge removal device for water treatment as described in claim 1, characterized in that: The sludge discharge pipe (2) passing through the side wall of the flocculation tank (1) is also provided with a ring hoop (9) sleeved on it, and the length of the ring hoop (9) is greater than the thickness of the side wall.

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