A gravity-fed sludge-discharging sedimentation tank

Abstract

This application discloses a gravity-fed sludge discharge sedimentation tank, comprising: a sedimentation tank; a support platform disposed within the sedimentation tank; an inclined tube sedimentation zone disposed on the support platform; two sludge collection zones disposed within the sedimentation tank; a baffle plate connected to the support platform and located within the sludge collection zones; and a sludge outlet disposed at the bottom of the sedimentation tank, connecting to the sludge collection zones. Sludge settled from the inclined tube sedimentation zone falls into the sludge collection zones and continues to settle there. Large particles of sludge are blocked from entering the sludge outlet through the gap between the baffle plate and the inner wall of the sedimentation tank, while small particles are allowed to enter. The accumulated sludge at the sludge outlet can be periodically discharged under gravity, achieving gravity-fed sludge discharge. This saves energy consumption required for sludge discharge, and due to the structural design of the baffle plate, gravity-fed sludge discharge is less prone to clogging, increasing sludge discharge efficiency.

Description

Technical Field

[0001] This application relates to the field of wastewater treatment technology, and in particular to a gravity-fed sedimentation tank for sludge discharge. Background Technology

[0002] An inclined tube sedimentation tank is a sedimentation tank with inclined tubes within its sedimentation zone. The sedimentation zone is divided into a series of shallow sedimentation layers using inclined parallel tubes or pipes. The treated water and settled sludge move and separate within these shallow sedimentation layers. The sludge in the sedimentation tank needs to be cleaned regularly. Traditional sludge removal technologies typically rely on mechanical scraping equipment. However, this equipment consumes significant energy during operation, increasing operating costs and environmental burden. Furthermore, it usually requires frequent maintenance and repairs, and equipment failures have a substantial impact on the entire system, leading to increased management costs. Mechanical scraping equipment is also susceptible to suspended solids in wastewater, causing blockages or reduced efficiency, thus affecting overall sludge removal performance. The relatively low sludge removal efficiency fails to effectively improve the utilization efficiency of sedimentation tanks and the precision of sludge separation.

[0003] Therefore, it is necessary to propose a gravity-fed sedimentation tank for sludge discharge to reduce the operating cost of the sludge discharge system, which has become an important technical problem that needs to be solved urgently. Utility Model Content

[0004] This application provides a gravity-fed sedimentation tank for sludge discharge, which aims to solve the problem that existing mechanical sludge scraping equipment consumes a lot of energy during operation, increasing operating costs and environmental burden.

[0005] To achieve the above objectives, this application proposes a gravity-fed sludge discharge sedimentation tank, comprising: a sedimentation tank; a support platform, wherein the support platform is disposed within the sedimentation tank; an inclined tube sedimentation zone, wherein the inclined tube sedimentation zone is disposed on the support platform; a sludge collection zone, wherein two sludge collection zones are disposed within the sedimentation tank; a baffle, wherein the baffle is connected to the support platform and is located within the sludge collection zone; and a sludge outlet, wherein a sludge outlet is disposed at the bottom of the sedimentation tank and the sludge outlet is connected to the sludge collection zone.

[0006] In some embodiments, the system further includes: a connecting screw, one end of which is connected to a baffle, and the other end of which is connected to a support platform; and two locking nuts, which are disposed on the connecting screw, one locking nut abutting against the baffle and the other locking nut abutting against the support platform.

[0007] In some embodiments, the method further includes an anti-clogging coating, wherein the anti-clogging coating is provided in the mud collection area.

[0008] In some embodiments, the system further includes: a redirecting pipe connected to a mud outlet; and a mud discharge valve connected to the redirecting pipe.

[0009] In some embodiments, the system further includes: a jet pipe disposed in the sedimentation tank and located below the support platform; and a plurality of air outlets disposed at intervals on the jet pipe.

[0010] In some embodiments, the system further includes: an inlet disposed on the sedimentation tank; and an overflow outlet disposed on the sedimentation tank.

[0011] This application proposes a gravity-fed sludge discharge sedimentation tank, comprising: a sedimentation tank; a support platform disposed within the sedimentation tank; an inclined tube sedimentation zone disposed on the support platform; two sludge collection zones disposed within the sedimentation tank; a baffle plate connected to the support platform and located within the sludge collection zones; and a sludge outlet disposed at the bottom of the sedimentation tank, connecting to the sludge collection zones. Sludge settling from the inclined tube sedimentation zone falls into the sludge collection zones and continues to settle there. The gap between the baffle plate and the inner wall of the sedimentation tank prevents large particles of sludge from entering the sludge outlet, while allowing small particles to enter. The accumulated sludge at the outlet is periodically discharged under gravity, achieving gravity-fed sludge discharge. This method saves energy required for sludge discharge, and due to the baffle plate's structural design, gravity-fed sludge discharge is less prone to clogging, thus improving discharge efficiency. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein: Figure 1 This is a front view of a gravity-fed sludge-discharging sedimentation tank according to an embodiment of this application; Figure 2 for Figure 1 Enlarged view of part A in the middle; Figure 3 for Figure 1 Enlarged view of part B in the middle; Figure 4 This is a left view of a gravity-fed sedimentation tank for sludge discharge according to an embodiment of this application; Figure 5 This is a top view of a gravity-fed sedimentation tank for sludge discharge according to an embodiment of this application.

[0013] In the diagram: 1. Sedimentation tank; 2. Reinforcing rib; 3. Connecting seat; 4. Baffle; 41. Rectangular platform; 5. Sludge outlet; 6. Diverting pipe; 7. Sludge discharge valve; 8. Connecting screw; 9. Air jet pipe; 91. Air outlet; 10. Inclined tube sedimentation zone; 11. Overflow trough; 12. Overflow port; 13. Water inlet; 14. Locking nut; 15. Gasket; 16. Support platform; 17. Anti-clogging coating. Detailed Implementation

[0014] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0015] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0016] It should also be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component present. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component present.

[0017] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0018] See Figure 1 , Figure 4 and Figure 5 As shown, this application proposes a gravity-fed sludge-discharging sedimentation tank, comprising: a sedimentation tank 1; a support platform 16, wherein the support platform 16 is disposed within the sedimentation tank 1; an inclined tube sedimentation zone 10, wherein the inclined tube sedimentation zone 10 is disposed on the support platform 16; a sludge collection zone, wherein two sludge collection zones are disposed within the sedimentation tank 1; a baffle 4, wherein the baffle 4 is connected to the support platform 16 and is located within the sludge collection zone; and a sludge outlet 5, wherein a sludge outlet 5 is disposed at the bottom of the sedimentation tank 1 and is connected to the sludge collection zone.

[0019] The sedimentation tank 1 is the structural foundation of a gravity-fed sludge-discharging sedimentation tank. All other structures of the sedimentation tank are directly or indirectly installed on the sedimentation tank 1. A support platform 16 is welded to the sedimentation tank 1, which supports the inclined tube sedimentation zone 10. The inclined tube sedimentation zone 10 is fixed to the support platform 16 by screws or other fasteners. Reinforcing ribs 2 and connecting seats 3 are also welded to the outside of the sedimentation tank 1. The reinforcing ribs 2 enhance the overall structural strength of the sedimentation tank 1, and the connecting seats 3 secure the sedimentation tank 1.

[0020] The sludge collection zone, baffle 4, and sludge outlet 5 are the core structures of a gravity-fed sludge discharge sedimentation tank. The sludge collection zone is the area with a reduced cross-sectional area at the bottom of the sedimentation tank 1. The left and right side walls of the sludge collection zone of the sedimentation tank 1 are inclined surfaces, so that the sludge can flow towards the sludge outlet 5 under the guidance of the inclined surfaces. Preferably, there are two sludge collection zones. The two sludge collection zones are arranged alternately inside the sedimentation tank 1.

[0021] There is a gap between the baffle 4 and the inner wall of the sedimentation tank 1, preferably 8-12 mm. The gap between the baffle 4 and the inner wall of the sedimentation tank 1 is used to prevent large particles of sludge from entering the sludge outlet 5 and causing blockage of the sludge outlet 5. The sludge can be discharged from the sludge outlet 5 periodically under the action of gravity, realizing gravity-fed sludge discharge.

[0022] Specifically, the sludge settled in the inclined tube sedimentation zone 10 falls into the sludge collection zone and continues to settle there. Through the gap between the baffle 4 and the inner wall of the sedimentation tank 1, large particles of sludge are prevented from entering the sludge outlet 5, while small particles are allowed to enter. The sludge accumulated at the outlet 5 can be periodically discharged under gravity, achieving gravity-fed sludge discharge. This saves energy required for sludge discharge, and due to the structural design of the baffle 4, gravity-fed sludge discharge is less prone to clogging, improving sludge discharge efficiency.

[0023] The system includes multiple sludge outlets (5) to distribute the sludge discharge pressure and further reduce the likelihood of blockages. Additionally, deviscosifying agents such as bio-enzymes can be added to the wastewater to reduce the viscosity of the sludge, further minimizing the possibility of blockages.

[0024] See Figure 1 , Figure 2 and Figure 3As shown, in some embodiments, the system further includes: a connecting screw 8, one end of which is connected to a baffle 4, and the other end of which is connected to a support platform 16, thereby achieving a stable connection between the baffle 4 and the support platform 16; and two locking nuts 14, which are disposed on the connecting screw 8, one locking nut 14 abutting against the baffle 4 and the other locking nut 14 abutting against the support platform 16. The locking nuts 14 ensure that the threaded connection will not loosen, further improving the stability of the connection between the baffle 4 and the support platform 16, and preventing a decrease in the gap between the baffle 4 and the inner wall of the sedimentation tank 1 due to loosening.

[0025] In this embodiment, the baffle 4 includes a rectangular platform 41 and an inclined area. The bottom of the inclined area forms a gap with the inner wall of the sedimentation tank 1 to block large particles of silt. The rectangular platform 41 is provided with a threaded hole for connecting with the connecting screw 8. A gasket 15 is provided between the locking nut 14 and the baffle 4 and between the locking nut 14 and the support platform 16.

[0026] See Figure 1 and Figure 3 As shown, in some embodiments, the system further includes an anti-clogging coating 17, which is provided within the sludge collection area. The anti-clogging coating 17 can reduce the friction between the sludge and the inner wall of the sedimentation tank 1, thereby reducing the possibility of sludge accumulation and blockage. The anti-clogging coating 17 can be made of modified polyethylene or other materials, as long as it can achieve the effect of reducing the friction between the sludge and the inner wall of the sedimentation tank 1; no specific limitations are imposed here.

[0027] See Figure 1 and Figure 4 As shown, in some embodiments, it further includes: a redirecting pipe 6, which is connected to the mud outlet 5; one end of the redirecting pipe 6 is connected to the mud outlet 5 by a bolt, and the other end of the redirecting pipe 6 is connected to a mud discharge valve 7 by a bolt, which is connected to the redirecting pipe 6. The mud discharge valve 7 can be opened periodically to achieve gravity-based gravity-driven mud discharge.

[0028] In this embodiment, both the diversion pipe 6 and the sludge discharge valve 7 are provided with an anti-clogging coating 17 to reduce the possibility of clogging. The diversion pipe 6 includes connecting pipe sections at both ends and a middle inclined pipe section. Preferably, the diameter of the inclined pipe section gradually increases to reduce the possibility of clogging.

[0029] See Figure 1 and Figure 4As shown, in some embodiments, the system further includes: a jet pipe 9, which is disposed in the sedimentation tank 1 and located below the support platform 16; the jet pipe 9 is connected to an external air source, and an anti-backflow valve is provided between the jet pipe 9 and the air source to prevent water inside the sedimentation tank 1 from flowing out of the jet pipe 9 when the jet is not being sprayed. Multiple air outlets 91 are spaced apart from the jet pipe 9. When a blockage forms in the inclined tube sedimentation zone 10, gas can be introduced into the support platform 16 through the jet pipe 9 and the air outlets 91, with some gas entering the inclined tube sedimentation zone 10 to break up the blockage.

[0030] See Figure 1 , Figure 4 and Figure 5 As shown, in some embodiments, it further includes: an inlet 13, which is disposed on the sedimentation tank 1; the inlet 13 is used to discharge the wastewater to be treated; and an overflow outlet 12, which is disposed on the sedimentation tank 1. Clean water enters the overflow trough 11 and is discharged from the overflow outlet 12 of the overflow trough 11.

[0031] The above description is only a part or preferred embodiment of this application. Neither the text nor the drawings should limit the scope of protection of this application. All equivalent structural transformations made using the content of this application's specification and drawings under the overall concept of this application, or direct / indirect applications in other related technical fields, are included within the scope of protection of this application.

Claims

1. A gravity-fed sedimentation tank for sludge discharge, characterized in that, include: Sedimentation tank (1); Support platform (16), the support platform (16) is provided in the sedimentation tank (1); Inclined tube sedimentation zone (10), the inclined tube sedimentation zone (10) is disposed on the support platform (16); Sludge collection area: Two sludge collection areas are provided in the sedimentation tank (1); Baffle (4), which is connected to the support platform (16) and is located in the mud collection area; The mud outlet (5) is provided at the bottom of the sedimentation tank (1), and the mud outlet (5) is connected to the mud collection area.

2. The sedimentation tank for gravity-fed sludge discharge according to claim 1, characterized in that, Also includes: A connecting screw (8) is provided, one end of which is connected to the baffle (4), and the other end of which is connected to the support platform (16). Two locking nuts (14) are provided on the connecting screw (8), one locking nut (14) abuts against the baffle (4), and the other locking nut (14) abuts against the support platform (16).

3. A gravity-fed sludge-discharging sedimentation tank according to claim 1, characterized in that, Also includes: Anti-clogging coating (17) is provided in the mud collection area.

4. A gravity-fed sludge-discharging sedimentation tank according to claim 1, characterized in that, Also includes: A diversion pipe (6) is connected to the mud outlet (5); Sludge discharge valve (7), which is connected to the diversion pipe (6).

5. A gravity-fed sludge-discharging sedimentation tank according to claim 1, characterized in that, Also includes: A jet pipe (9) is disposed in the sedimentation tank (1) and located below the support platform (16); Multiple air outlets (91) are spaced apart on the jet pipe (9).

6. A gravity-fed sludge-discharging sedimentation tank according to claim 1, characterized in that, Also includes: Water inlet (13), the water inlet (13) is provided on the sedimentation tank (1); Overflow port (12), which is provided on the sedimentation tank (1).

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