Clarifying tank

Abstract

The utility model provides a clarifying tank. The utility model provides a clarifying tank. The clarifying tank comprises a support; the tank body is provided with a clarifying chamber, and the tank body is arranged on the support; the stirring mechanism is arranged on the tank body and comprises a driving part, a rotating shaft and a stirring part, the stirring part is located in the clarifying chamber, one end of the rotating shaft is connected with the stirring part, the other end of the rotating shaft extends out of the clarifying chamber to be connected with the driving part, and the rotating shaft is rotatably arranged on the tank body so that the stirring part can be used for stirring liquid in the clarifying chamber; and the multiple anti-falling structures are connected with the inner wall of the clarifying chamber, protrude out of the inner wall of the clarifying chamber and extend in the direction where the rotating shaft is located, and the multiple anti-falling structures are located above the stirring part and arranged in the circumferential direction of the rotating shaft at intervals. According to the technical scheme provided by the utility model, the problem that a large number of scale pieces on the inner wall of the clarifying tank in the prior art are easy to fall off is solved.

Description

Technical Field

[0001] This utility model relates to the field of clarifying tank technology, and more specifically, to a clarifying tank. Background Technology

[0002] The black water produced by coal gasification needs to be flash-treated in a black water flash evaporation unit before entering a clarification tank for accelerated settling. Other media entering the clarification tank include wastewater from various units' drainage ditches and sump sewage. After accelerated settling by chemicals, the high-solid-content media, such as black water and sewage, overflow from the top of the clarification tank into a circulating water tank, where it is reused as circulating water for the gasification system. The agglomerated sludge with high solid content at the bottom of the clarification tank is pumped through a conical output pipeline to a vacuum filtration unit for vacuum dehydration and filtration. The dried filter cake is then transported externally by a slag truck, while the filtrate is returned to the clarification tank for circulation.

[0003] The clarification tank currently in use consists of a cylindrical body, a top arc-shaped cover plate, and a bottom conical discharge port welded together. The entire clarification tank device mainly comprises three parts: the clarification tank body, the internal stirring rake, and the top drive lifting motor.

[0004] During the settling process of the ash water inside the clarifier, the drive motor drives the rotating rake to rotate. The rake causes the ash water inside to rotate slowly, preventing a large amount of solid flocs from clogging the bottom outlet. Because the ash water in the clarifier rotates slowly and tends to be still, alkaline ions or alkaline substances such as calcium, magnesium, aluminum, and silicon in the ash water will adhere to the inner wall of the clarifier. After a large amount of alkaline ions or alkaline substances accumulate, scale will form on the clarifier wall. The thickness of the scale on the inner wall of the clarifier increases with the increase of the clarifier's operating time. When the thickness of the scale on the inner wall reaches its gravity limit, the scale will fall off. When large pieces of scale fall off, they can damage the rotating parts of the rake or obstruct its rotation, causing the rake to malfunction or trip due to overcurrent. Small pieces of scale can also block the bottom outlet of the clarifier and the inlet pipeline of the mud pump, forcing the gasification unit to reduce its load or shut down.

[0005] Chinese invention patent application number 202321632206.7 proposes a settling tank. The settling tank has a settling trough at its top and a sludge collection trough on one side of its bottom. A collection box is embedded within the sludge collection trough. A fixing rod is fixedly installed at the center of the collection box. A connecting component is provided at the top of the fixing rod. The connecting component connects to one end of a threaded rod, and the other end of the threaded rod connects to an adjusting component. The adjusting component is installed in a mounting cavity, which is located within a movable seat. The movable seat is fixedly installed at one end of the settling tank. Baffles are fixedly installed on both sides of the settling tank, and movable components are installed within the baffles. The movable components connect to both ends of a connecting plate. A scraping component is fixedly installed at the bottom of the connecting plate. This design solves the problem of clogging the sludge tank due to the inability to scrape away accumulated sediment from its inner wall over time. However, this settling tank can only scrape sediment from one fixed inner wall, making it unsuitable for cylindrical clarification tanks.

[0006] Chinese invention patent application number 202311517786.X proposes a settling tank for thickening salt slurry to prevent scaling. A drive motor is fixedly connected to the top of the main tank, as is a fixed block. Two sliding grooves are formed at the top of the main tank, each containing a drive block. A fixed plate is fixedly connected to the top of the main tank. A screw is fixedly connected to the output end of the drive motor, with the end of the screw away from the drive motor rotatably connected to the fixed plate. The screw is threadedly connected to the inside of one drive block. A sliding rod is fixedly connected between the fixed block and the fixed plate, slidingly engaging the inside of the other drive block. This structure controls the material feeding while keeping the inner wall of the main tank clean, preventing scaling and facilitating settling without the need for subsequent descaling. This settling tank is horizontally designed and uses a piston pusher to clean scale from both sides of the walls. However, it has a small black water treatment capacity and is not suitable for currently used clarification tanks.

[0007] Chinese invention patent application number 202321343589.6 proposes a settling tank, including a settling tank with a collection trough at its bottom. A collection box is fitted inside the collection trough, and the top of one side of the collection box is fixedly connected to the bottom of a lifting plate. A groove is formed at the center of one side of the lifting plate, and several toothed blocks are installed in the groove. These toothed blocks are connected to a lifting assembly, which is installed in an installation groove. Sliding grooves are formed on both sides of the top of the settling tank, and through grooves are formed on opposite sides of the sliding grooves. Moving components are installed in each sliding groove, and the moving components are connected to movable seats. A connecting plate is fixedly installed at the bottom of the movable seat, and a sliding plate is fixedly connected to the bottom of the connecting plate. The sliding plate slides inside the settling tank. This invention solves the problem that traditional settling tanks require regular cleaning of the sludge inside, which is difficult and requires manual cleaning from the bottom of the tank, making it inconvenient to operate. However, this settling tank cannot discharge bottom sludge, has a small processing capacity, and is unsuitable for gasification production processes.

[0008] In existing clarifiers, large, continuous flakes of scale adhere directly to the walls, with only friction acting between the scale and the wall. Over time, as the scale thickness increases, so does its weight. When this weight exceeds the frictional force, large slabs of scale will detach from the clarifier walls due to temperature changes. These detached scale flakes can damage the rotating parts of the internal rakes or obstruct their rotation, leading to rake malfunctions or overcurrent tripping. They can also block the bottom discharge port of the clarifier and the inlet pipeline of the slurry pump, forcing the black water treatment system to be shut down for maintenance, impacting the gasification unit's load. During maintenance, large amounts of slurry and black water have nowhere to be discharged, and on-site discharge would cause significant pollution. Furthermore, during maintenance, large flakes on the clarifier walls pose a risk of falling and injuring maintenance personnel. Therefore, the clarifier negatively impacts the safe, stable, and clean operation of the system. Utility Model Content

[0009] The main purpose of this invention is to provide a clarification tank to solve the problem that large amounts of scale flakes on the inner wall of the clarification tank in the prior art are prone to falling off.

[0010] To achieve the above objectives, this utility model provides a clarification tank, comprising: a support; a tank body having a clarification chamber, the tank body being disposed on the support; a stirring mechanism disposed on the tank body, the stirring mechanism including a drive unit, a rotating shaft, and a stirring unit, the stirring unit being located within the clarification chamber, one end of the rotating shaft being connected to the stirring unit, the other end of the rotating shaft extending out of the clarification chamber and connected to the drive unit, the rotating shaft being rotatably disposed on the tank body so that the stirring unit is used to stir the liquid in the clarification chamber; and multiple anti-detachment structures connected to the inner wall of the clarification chamber, the anti-detachment structures protruding from the inner wall of the clarification chamber and extending in the direction of the rotating shaft, the multiple anti-detachment structures being located above the stirring unit, and the multiple anti-detachment structures being arranged at intervals along the circumference of the rotating shaft.

[0011] Furthermore, the anti-detachment structure includes multiple anti-detachment components, which are spaced apart along the axial direction of the rotating shaft.

[0012] Furthermore, the anti-detachment component includes: a mounting component connected to the inner wall of the clarification chamber; and multiple protrusions connected to the mounting component, the multiple protrusions being located on the side of the mounting component facing the rotating shaft.

[0013] Furthermore, the mounting component includes a first plate segment and a second plate segment disposed at an angle to the first plate segment. One end of the first plate segment is connected to the inner wall of the clarification chamber, and the other end of the first plate segment is connected to one end of the second plate segment. The other end of the second plate segment is connected to the inner wall of the clarification chamber. At least one protrusion is provided on the side of the first plate segment opposite to the second plate segment and / or on the side of the second plate segment opposite to the first plate segment.

[0014] Furthermore, both the first and second plate segments are welded to the inner wall of the clarification chamber.

[0015] Furthermore, multiple protrusions are provided on both the side of the first plate segment opposite to the second plate segment and the side of the second plate segment opposite to the first plate segment.

[0016] Furthermore, the protrusion includes a connecting rod and an end cap connected to the connecting rod, the cross-sectional area of ​​the end cap being larger than the cross-sectional area of ​​the connecting rod, and the connecting rod being connected to the mounting component.

[0017] Furthermore, the tank body includes: a cylindrical structure with an internal through hole; an arc-shaped cover covering the top of the cylindrical structure, and a drive unit disposed on the arc-shaped cover; and a discharge structure located at the bottom of the cylindrical structure, with a discharge port on the discharge structure. The cylindrical structure, the arc-shaped cover, and the discharge structure form a clarification chamber.

[0018] Furthermore, the discharge structure is a conical cylinder, with the first end of the conical cylinder connected to the cylindrical structure, and the second end of the conical cylinder forming the discharge port. From the first end to the second end, the cross-sectional area of ​​the conical cylinder gradually decreases.

[0019] Furthermore, the anti-detachment structure is made of metal.

[0020] By applying the technical solution of this utility model, the anti-detachment structure installed on the inner wall of the clarification chamber effectively increases the direct adhesion area of ​​the scale flakes. This not only increases the friction between the scale flakes and the clarification tank, but also supports and disperses the weight of the scale flakes through the protruding anti-detachment structure, preventing the scale flakes from falling off completely due to gravity. This solves the problem of scale flakes falling off and damaging the internal rake assembly or clogging the discharge pipeline in traditional clarification tanks, thereby avoiding unplanned shutdowns and frequent maintenance of the unit. Furthermore, by reducing scale flake detachment events, this utility model significantly reduces the failure rate and maintenance frequency of the rake assembly, increases the continuous operating time and stability of the clarification tank, and ensures the stable full-load operation of the gasification unit. Reducing scale flake detachment events also reduces the difficulty of handover maintenance, avoids the environmental pollution that may be caused by large-scale discharge of mud and black water on site, and reduces maintenance costs, thereby improving economic efficiency. Moreover, during handover maintenance, this utility model reduces the risk of scale flakes falling off the inner wall of the clarification tank and injuring internal maintenance personnel, improving operational safety, simplifying the maintenance process, and improving work efficiency. This avoids the clarifier from affecting the safe, stable, and clean operation of the equipment. Attached Figure Description

[0021] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0022] Figure 1 A schematic diagram of an embodiment of the clarifying tank of this utility model is shown;

[0023] Figure 2 It shows Figure 1 A schematic diagram of the anti-detachment structure 10 in the clarification tank;

[0024] Figure 3 A force analysis diagram of scale flakes in a prior art clarification tank is shown;

[0025] Figure 4 The diagram shows the force analysis of the scale flakes in the clarification tank of this invention.

[0026] The above figures include the following reference numerals:

[0027] 1. Support; 2. Clarification chamber; 3. Drive unit; 4. Rotating shaft; 5. Stirring unit; 6. Mounting component; 7. Protrusion; 8. First plate segment; 9. Second plate segment; 10. Anti-fall-off structure; 11. Anti-fall-off component; 21. Cylindrical structure; 22. Arc-shaped cover; 23. Discharge structure; 71. Connecting rod; 72. End cap; 73. Scale plate. Detailed Implementation

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] like Figure 1 and Figure 2 As shown, an embodiment of this utility model provides a clarification tank, including: a support 1; a tank body having a clarification chamber 2, the tank body being disposed on the support 1; a stirring mechanism disposed on the tank body, the stirring mechanism including a drive unit 3, a rotating shaft 4 and a stirring unit 5, the stirring unit 5 being located inside the clarification chamber 2, one end of the rotating shaft 4 being connected to the stirring unit 5, the other end of the rotating shaft 4 extending out of the clarification chamber 2 and connected to the drive unit 3, the rotating shaft 4 being rotatably disposed on the tank body so that the stirring unit 5 is used to stir the liquid in the clarification chamber 2; and a plurality of anti-detachment structures 10 connected to the inner wall of the clarification chamber 2, the anti-detachment structures 10 protruding from the inner wall of the clarification chamber 2 and extending toward the direction of the rotating shaft 4, the plurality of anti-detachment structures 10 being located above the stirring unit 5, and the plurality of anti-detachment structures 10 being arranged at intervals along the circumference of the rotating shaft 4.

[0030] In the above technical solution, the anti-detachment structure 10 on the inner wall of the clarification chamber effectively increases the direct adhesion area of ​​the scale flakes. This not only increases the friction between the scale flakes and the clarification tank, but also supports and disperses the weight of the scale flakes through the protruding anti-detachment structure 10, preventing the scale flakes from detaching entirely due to gravity. This solves the problem of scale flakes detaching and damaging the internal rake assembly or clogging the discharge pipeline in traditional clarification tanks, thus avoiding unplanned shutdowns and frequent maintenance. Furthermore, by reducing scale flake detachment events, this invention significantly reduces the failure rate and maintenance frequency of the rake assembly, increases the continuous operating time and stability of the clarification tank, ensuring stable full-load operation of the gasification unit. Reducing scale flake detachment events also reduces the difficulty of handover maintenance, avoids environmental pollution caused by large-scale discharge of sludge and black water, reduces maintenance costs, and improves economic efficiency. Moreover, during handover maintenance, this invention reduces the risk of scale flakes detaching from the inner wall of the clarification tank and injuring internal maintenance personnel, improving operational safety, simplifying the maintenance process, and increasing work efficiency. This avoids the clarifier from affecting the safe, stable, and clean operation of the equipment.

[0031] Furthermore, the reasonable arrangement of the stirring mechanism, which includes a drive unit 3, a rotating shaft 4, and a stirring unit 5, can effectively promote the flow of liquid in the clarification chamber and accelerate solid-liquid separation. At the same time, the arrangement of the anti-detachment structure 10 avoids the accumulation and blockage of scale flakes, ensuring smooth circulation of fluid inside the clarification tank and the clarification effect.

[0032] Preferably, in the embodiments of this utility model, the driving part 3 is a driving motor and the stirring part 5 is a stirring rake.

[0033] Preferably, in the embodiments of this utility model, a plurality of anti-detachment structures 10 are arranged at uniform intervals along the circumference of the rotating shaft 4.

[0034] like Figure 1 As shown in the embodiment of this utility model, the anti-detachment structure 10 includes a plurality of anti-detachment components 11, which are spaced apart along the axial direction of the rotating shaft 4.

[0035] In the above technical solution, the weight of the scale adhering to the inner wall of the clarification tank can be distributed to multiple anti-detachment components 11, which significantly reduces the gravity load on a single anti-detachment component 11, thereby effectively reducing the risk of scale detachment due to excessive local gravity. Furthermore, the contact between the anti-detachment component 11 and the inner wall of the clarification tank provides additional support points, enhancing the mechanical stability between the scale and the inner wall. By being distributed at intervals along the axial direction, these support points can act on the scale at different heights, further reinforcing the adhesion of the scale.

[0036] Preferably, in the embodiments of this utility model, each anti-detachment structure 10 includes two anti-detachment components 11, and the two anti-detachment components 11 are arranged at intervals along the axial direction of the rotating shaft 4.

[0037] like Figure 2 As shown in the embodiment of this utility model, the anti-detachment component 11 includes: a mounting component 6, which is connected to the inner wall of the clarification chamber 2; and a plurality of protrusions 7, which are connected to the mounting component 6 and are located on the side of the mounting component 6 facing the rotating shaft 4.

[0038] The above technical solution can increase the contact area and contact points between the scale flakes and the anti-detachment structure 10, which can significantly improve the adhesion stability of the scale flakes. This can reduce the risk of scale flakes falling off due to gravity or hydrodynamic forces, and thus prevent the detachment of large scale flakes. This can reduce the probability of damage to the internal stirring components due to scale flake impact, reduce the shutdown and maintenance caused by component damage, and improve the operational stability and continuous operation time of the clarification tank.

[0039] Furthermore, the structural design of the anti-detachment component 11 makes the scale more likely to form smaller and more dispersed clumps, which not only reduces the difficulty of cleaning but also reduces the safety risks for maintenance personnel, avoiding potential injuries when cleaning under high scale load.

[0040] like Figure 2As shown in the embodiment of this utility model, the mounting member 6 includes a first plate segment 8 and a second plate segment 9 arranged at an angle to the first plate segment 8. One end of the first plate segment 8 is connected to the inner wall of the clarification chamber 2, and the other end of the first plate segment 8 is connected to one end of the second plate segment 9. The other end of the second plate segment 9 is connected to the inner wall of the clarification chamber 2. At least one protrusion 7 is provided on the side of the first plate segment 8 away from the second plate segment 9 and / or on the side of the second plate segment 9 away from the first plate segment 8.

[0041] In the above technical solution, the first plate segment 8 and the second plate segment 9 form an L-shaped structure. The L-shaped structure can be welded to the inner wall of the clarification chamber 2 at two points, which not only increases the contact area between the mounting part 6 and the inner wall of the clarification tank, but also improves the overall mechanical strength through the geometric stability of the structure, reducing loosening or damage caused by vibration or fluid impact. Moreover, the L-shaped structure of the mounting part 6 allows multiple protrusions 7 to be distributed on the two plate segments, which can more evenly distribute the weight of the scale attached to the inner wall, avoid excessive load on a single contact point, and thus reduce the possibility of scale falling off.

[0042] Preferably, in the embodiments of this utility model, both the first plate segment 8 and the second plate segment 9 are welded to the inner wall of the clarification chamber 2. This welding method of fixation, compared to other connection methods (such as bolt connections, snap-fit ​​connections, etc.), provides higher structural stability, and by welding the first plate segment 8 and the second plate segment 9 to the inner wall, a strong rigid connection is formed, significantly enhancing the load-bearing capacity of the anti-detachment structure.

[0043] Preferably, in the embodiment of this utility model, the mounting part 6 is made of Q235-B carbon steel angle steel with an L-shaped cross-section. Both ends are directly welded to the inner wall of the clarification chamber 2. Several flat-headed nails (protrusions 7) are arranged on the planes on both sides of the angle steel. The function of the flat-headed nails is to increase the force between a set of scale flakes and the contact surface, and to provide a certain tensile force for the scale flakes.

[0044] like Figure 2 As shown in the embodiment of this utility model, a plurality of protrusions 7 are provided on the side of the first plate segment 8 opposite to the second plate segment 9 and on the side of the second plate segment 9 opposite to the first plate segment 8.

[0045] In the above technical solution, protrusions 7 are provided on both sides of the L-shaped mounting part 6, which can provide more contact points for the scale and thus distribute the weight of the scale more evenly. In this way, the load borne by a single protrusion 7 is reduced, which reduces the risk of scale falling off due to excessive local load.

[0046] Furthermore, by increasing the number of protrusions 7 that contact the scale flakes, the adhesion of the anti-detachment structure 10 to the scale flakes is improved, and a good anti-detachment effect can be maintained even when the water flow rate changes or when subjected to other external impacts during the operation of the clarification tank.

[0047] like Figure 2 As shown in the embodiment of this utility model, the protrusion 7 includes a connecting rod 71 and an end cap 72 connected to the connecting rod 71. The cross-sectional area of ​​the end cap 72 is larger than the cross-sectional area of ​​the connecting rod 71. The connecting rod 71 is connected to the mounting member 6.

[0048] The above-mentioned design not only increases the adhesion between the scale flakes and the protrusion 7, but also makes the scale flakes more stable during adhesion, reducing the possibility of the scale flakes falling off the inner wall of the clarification tank due to gravity or hydrodynamic forces. Furthermore, since the cross-sectional area of ​​the end cap 72 is larger than that of the connecting rod 71, it can more effectively disperse the stress caused by the weight of the scale flakes. In this way, when bearing the weight of the scale flakes, the stress distribution is more uniform, reducing local stress concentration and preventing the connecting rod 71 from breaking or deforming due to excessive load.

[0049] like Figure 1 As shown, in an embodiment of this utility model, the tank body includes: a cylindrical structure 21 with an internal through hole; an arc-shaped cover 22 covering the top of the cylindrical structure 21, and a driving part 3 disposed on the arc-shaped cover 22; and a discharge structure 23 located at the bottom of the cylindrical structure 21, with a discharge port on the discharge structure 23. The cylindrical structure 21, the arc-shaped cover 22, and the discharge structure 23 form a clarification chamber 2.

[0050] With the above configuration, the arc-shaped cover 22 can withstand the pressure applied from the top, while the cylindrical structure 21 provides sufficient lateral support, and the discharge structure 23 ensures the strength and stability of the bottom. Overall, a robust and structurally optimized clarification tank is formed, which not only improves the overall strength of the structure but also ensures the stability of the clarification tank during operation.

[0051] Preferably, in the embodiments of this utility model, the cylindrical structure 21 is a cylindrical tube.

[0052] like Figure 1 As shown in the embodiment of this utility model, the discharge structure 23 is a conical cylinder. The first end of the conical cylinder is connected to the cylindrical structure 21, and the second end of the conical cylinder forms a discharge port. From the first end to the second end, the cross-sectional area of ​​the conical cylinder gradually decreases.

[0053] The above setup effectively guides larger solid particles or sediments to gather at the bottom outlet. The gradually decreasing cross-sectional area from top to bottom helps accelerate the settling and concentration of solid materials, making it easier to discharge them efficiently through a smaller outlet and reducing the risk of blockage.

[0054] Preferably, in the embodiments of this utility model, the anti-detachment structure 10 is made of a metal material. In this way, the metal material (such as stainless steel, carbon steel, etc.) has high mechanical strength and good corrosion resistance, and can withstand the pressure, fluid impact, and chemical corrosion under harsh working conditions inside the clarification tank, ensuring the stability and durability of the anti-detachment structure during long-term operation.

[0055] The clarification tank provided by this utility model reduces the caking of large scale flakes on the inner wall of the clarification chamber 2 by setting multiple anti-detachment structures 10 that can share the force, thereby reducing the weight of the scale flakes and reducing their detachment. This solves the problems in the prior art where scale flakes detach after long-term operation, causing damage to the rake and tripping, affecting the stable operation of the device, and making handover for maintenance difficult, polluting the environment, and posing safety hazards during maintenance. After using the clarification tank of this application, the frequency of rake failure repair and handover is reduced, the maintenance difficulty and cost are reduced, the difficulty and maintenance risk of cleaning scale flakes inside the clarification chamber 2 are reduced, and the continuous operation time, stability and operation cycle of the clarification tank are improved.

[0056] like Figure 3 As shown, in an embodiment of this utility model, in a prior art clarification tank, the scale 73 formed by solid particles in the grey water is in direct contact with the wall surface. The scale 73 is only subjected to the frictional force (adhesion force of solid particles) f between the two. When the weight mg of the scale 73 is greater than the frictional force f, the scale 73 will fall off. Figure 4 As shown, in the clarification tank of this application, the scale flake 73 is subjected to its own weight mg, the frictional force f1 between the wall and the scale flake 73, the frictional force and rivet pull force f2 from the upper part of the anti-detachment structure 10, the frictional force and rivet pull force f3 from the lower part of the anti-detachment structure 10, and the resultant force between f2 and f3 is upward, which generally increases the upward force on the scale flake 73 and reduces the risk of scale flake 73 falling off.

[0057] In this invention, an anti-detachment structure 10 is added to the smooth inner wall of the existing clarification tank, transforming it into a clarification tank with an anti-scale flake detachment effect. This solves the problem in the prior art where a large number of scale flakes detach after the clarification tank has been running for a long time, causing the rake to malfunction, be damaged, or trip, and affecting the stable operation of the device at full load. This improves the stability of the continuous operation of the clarification tank and extends the operating time.

[0058] From the above description, it can be seen that the above embodiments of this utility model achieve the following technical effects: The anti-detachment structure on the inner wall of the clarification chamber can effectively increase the direct adhesion area of ​​the scale flakes. This not only increases the friction between the scale flakes and the clarification tank, but also supports and disperses the weight of the scale flakes through the protruding anti-detachment structure, preventing the scale flakes from falling off completely due to gravity. This solves the problem of scale flakes falling off and damaging the internal rake assembly or clogging the discharge pipeline in traditional clarification tanks, thereby avoiding unplanned shutdowns and frequent maintenance of the device; and by reducing scale flake detachment events, This invention significantly reduces the failure rate and maintenance frequency of the rotary rake, increases the continuous operating time and stability of the clarifier, ensuring stable full-load operation of the gasification unit. Furthermore, by reducing scale detachment incidents, it simplifies handover maintenance, avoids potential environmental pollution from large-scale discharge of sludge and black water, and reduces maintenance costs, thus improving economic efficiency. During handover maintenance, this invention reduces the risk of scale detaching from the clarifier wall and injuring maintenance personnel, enhancing operational safety and simplifying the maintenance process, thereby increasing work efficiency. In this way, the clarifier can be prevented from affecting the safe, stable, and clean operation of the unit.

[0059] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A clarification tank, characterized in that, include: Support (1); The tank body has a clarification chamber (2), and the tank body is disposed on the support (1); A stirring mechanism is provided on the tank body. The stirring mechanism includes a drive unit (3), a rotating shaft (4), and a stirring unit (5). The stirring unit (5) is located in the clarification chamber (2). One end of the rotating shaft (4) is connected to the stirring unit (5), and the other end of the rotating shaft (4) extends out of the clarification chamber (2) and is connected to the drive unit (3). The rotating shaft (4) is rotatably provided on the tank body so that the stirring unit (5) is used to stir the liquid in the clarification chamber (2). Multiple anti-detachment structures (10) are connected to the inner wall of the clarification chamber (2). The anti-detachment structures (10) protrude from the inner wall of the clarification chamber (2) and extend toward the direction of the rotating shaft (4). The multiple anti-detachment structures (10) are located above the stirring part (5) and are arranged circumferentially along the rotating shaft (4).

2. The clarification tank according to claim 1, characterized in that, The anti-detachment structure (10) includes a plurality of anti-detachment components (11), which are spaced apart along the axial direction of the rotating shaft (4).

3. The clarification tank according to claim 2, characterized in that, The anti-fall-off component (11) includes: The mounting component (6) is connected to the inner wall of the clarification chamber (2); Multiple protrusions (7) are connected to the mounting member (6), and the multiple protrusions (7) are located on the side of the mounting member (6) facing the rotating shaft (4).

4. The clarification tank according to claim 3, characterized in that, The mounting component (6) includes a first plate segment (8) and a second plate segment (9) arranged at an angle to the first plate segment (8). One end of the first plate segment (8) is connected to the inner wall of the clarification chamber (2), and the other end of the first plate segment (8) is connected to one end of the second plate segment (9). The other end of the second plate segment (9) is connected to the inner wall of the clarification chamber (2). At least one protrusion (7) is provided on the side of the first plate segment (8) away from the second plate segment (9) and / or on the side of the second plate segment (9) away from the first plate segment (8).

5. The clarification tank according to claim 4, characterized in that, Both the first plate segment (8) and the second plate segment (9) are welded to the inner wall of the clarification chamber (2).

6. The clarification tank according to claim 4, characterized in that, Multiple protrusions (7) are provided on both the side of the first plate segment (8) away from the second plate segment (9) and the side of the second plate segment (9) away from the first plate segment (8).

7. The clarifier according to claim 3, characterized in that, The protrusion (7) includes a connecting rod (71) and an end cap (72) connected to the connecting rod (71). The cross-sectional area of ​​the end cap (72) is larger than the cross-sectional area of ​​the connecting rod (71). The connecting rod (71) is connected to the mounting member (6).

8. The clarification tank according to any one of claims 1 to 7, characterized in that, The groove body includes: A cylindrical structure (21) with an internal through hole; An arc-shaped cover (22) is placed on top of the cylindrical structure (21), and the driving part (3) is disposed on the arc-shaped cover (22); The discharge structure (23) is located at the bottom of the cylindrical structure (21). The discharge structure (23) is provided with a discharge port. The cylindrical structure (21), the arc-shaped cover (22) and the discharge structure (23) form the clarification chamber (2).

9. The clarification tank according to claim 8, characterized in that, The discharge structure (23) is a conical cylinder. The first end of the conical cylinder is connected to the cylindrical structure (21), and the second end of the conical cylinder forms the discharge port. From the first end to the second end, the cross-sectional area of ​​the conical cylinder gradually decreases.

10. The clarification tank according to any one of claims 1 to 7, characterized in that, The anti-detachment structure (10) is made of metal material.

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