Sedimentation tank device

Abstract

The utility model relates to the technical field of sewage treatment, in particular to a sedimentation tank device which comprises a sedimentation tank, a slag blocking plate, a slag collecting hopper, an overflow plate and a slag scraping mechanism, and the slag blocking plate is provided with a scum space in a surrounding mode in the circumferential direction of the sedimentation tank; the scum collecting hopper is provided with a scum inlet positioned in the scum space; the overflow plate is arranged on the peripheral side of the slag baffle, an overflow space is formed between the overflow plate and the slag baffle, and a plurality of triangular weirs are distributed on the overflow plate; the slag scraping mechanism comprises a slag scraper, a rotating shaft and at least one slag scraping beam, the rotating shaft can rotate relative to the sedimentation tank, one end of the slag scraping beam is connected with the rotating shaft, and the other end of the slag scraping beam extends towards the slag baffle and is connected with the slag scraper; the rotating shaft can drive the scum scraping beam and the scum scraper to synchronously rotate in the scum space, so that the scum scraping beam and the scum scraper push scum in the scum space to the scum collecting hopper. The sedimentation tank device is small in occupied space, can cover the circumferential area of the scum space, eliminates the path limitation of linear scum scraping, can also prevent the scum from being accumulated again after falling back, and reduces cleaning dead angles.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a sedimentation tank device. Background Technology

[0002] Sedimentation tanks are one of the core facilities in water treatment processes, widely used in municipal sewage treatment, industrial wastewater treatment, and water purification. Their core function is to separate suspended solids (SS), oily substances, and other light scum from water through gravity settling, thereby reducing turbidity and improving water quality. During sedimentation tank operation, suspended solids gradually accumulate on the tank surface to form a scum layer. If this layer is not removed in time, it will lead to a reduction in effective sedimentation area, deterioration of hydraulic conditions, and even problems such as exceeding effluent quality standards and equipment blockage.

[0003] In response, utility model patent CN219251753U proposes a scum scraping device for the flow zone of a high-efficiency sedimentation tank. This device uses a traveling crane to drive a rubber scraper from one end of a baffle plate to the other end of a scum collection channel, scraping scum floating on the surface of the liquid in the flow zone into the collection channel along the guide plate. The traveling crane then returns from the collection channel to the baffle plate, allowing the baffle plate to scrape the scum adhering to the back of the rubber scraper into the wastewater. This process is repeated to remove scum floating on the surface of the filtration zone. However, this scum scraping device occupies a large space and is limited by the length of the traveling crane track, making it difficult to cover the circumferential area of ​​a circular or large-span sedimentation tank. Furthermore, the scraper cannot operate continuously on the return trip, easily causing scum to re-accumulate on the other side of the tank, creating cleaning dead zones. Utility Model Content

[0004] The purpose of this invention is to provide a sedimentation tank device to solve the problems of current sludge scraping devices occupying a large space, having a limited scraping range, and easily creating cleaning dead corners.

[0005] This application provides a sedimentation tank apparatus, comprising:

[0006] A sedimentation tank having intersecting first and second directions;

[0007] A slag baffle is disposed on the outer periphery of the sedimentation tank and extends along the first direction to the top of the sedimentation tank, thereby forming a slag space arranged circumferentially along the sedimentation tank, the slag space being connected to the sedimentation tank.

[0008] A slag collection hopper is used to collect slag, and the slag collection hopper is provided with a slag inlet located in the slag space;

[0009] An overflow plate is provided on the outer periphery of the slag baffle plate, and an overflow space communicating with the sedimentation tank is formed between the overflow plate and the slag baffle plate. Multiple triangular weirs are distributed at intervals along the circumference of the overflow plate, and the triangular weirs are used to drain the liquid in the overflow space to the clear water area.

[0010] The slag scraping mechanism includes a slag scraper, a rotating shaft, and at least one slag scraping beam. The rotating shaft is rotatable relative to the sedimentation tank. One end of the slag scraping beam is connected to the rotating shaft, and the other end extends toward the baffle plate and is connected to the slag scraper.

[0011] Furthermore, the rotation of the rotating shaft can drive the scraper beam and the scraper to rotate synchronously within the scum space, so that the scraper beam and the scraper push the scum in the scum space to the scum collection hopper.

[0012] In one embodiment, there are two scraper beams, which are symmetrically arranged in the scum space relative to the rotation axis. One end of each scraper beam near the rotation axis is connected to the rotation axis, and the other end is connected to the scraper.

[0013] In one embodiment, the scum scraper includes a scraper plate, a first connecting strip, and a second connecting strip. The first connecting strip and the second connecting strip are disposed above the liquid surface where the scum is located. The first connecting strip is connected to the scraper beam and extends toward the baffle plate. The second connecting strip is adjustablely connected to the end of the first connecting strip near the baffle plate and extends away from the first connecting strip. The extension direction of the second connecting strip intersects the extension direction of the first connecting strip. The scraper plate is installed at the end of the second connecting strip away from the first connecting strip and is used to scrape the scum located around the scraper beam.

[0014] In one embodiment, a notch is provided at one end of the first connecting strip near the slag baffle, and the second connecting strip is engaged at the notch so that the second connecting strip can move relative to the first connecting strip.

[0015] In one embodiment, the scraper is adjustablely connected to the end of the second connecting strip.

[0016] In one embodiment, the scraper further includes an auxiliary strip connected to one end of the scraper beam near the baffle plate and located on the side of the scraper plate away from the baffle plate, for assisting the scraper plate in scraping slag.

[0017] In one embodiment, the scraper further includes a rubber pad that is detachably fixed to the scraper plate on the surface for scraping slag.

[0018] In one embodiment, the slag scraping mechanism further includes a working bridge and a power component. The working bridge is disposed above the slag space, the power component is fixed on the working bridge, and the output shaft of the power component passes through the working bridge and is connected to the rotating shaft.

[0019] In one embodiment, the sedimentation tank device further includes a limiting plate disposed in the scum space. The limiting plate is located on the side of the scum collection hopper opposite to the scum baffle plate and extends partially toward the rotation direction of the scum scraper beam. A flow channel for guiding the scum to flow into the scum collection hopper is formed between the limiting plate and the scum baffle plate.

[0020] When the slag scraper beam and the slag scraper rotate synchronously in the slag space, the slag is pushed into the flow channel.

[0021] In one embodiment, guide plates are provided on both sides of the slag inlet of the slag collection hopper, and the guide plates are used to assist the floating slag in the flow channel to flow into the slag collection hopper.

[0022] The technical solutions provided in this application have the following advantages compared with the prior art:

[0023] The baffle plate installed at the top of the sedimentation tank effectively blocks scum, keeping it within the scum space connected to the sedimentation tank and preventing its diffusion. Then, the rotating shaft is driven to rotate, causing the scraper beam and scraper to rotate circumferentially along the scum space. Because the scraper and scraper beam are parallel to the liquid surface and in contact with the scum suspended on the surface, the rotating scraper and scraper beam work together to push the scum onto the liquid surface towards the scum collection hopper, ultimately entering the scum collection hopper, thus achieving efficient scum collection. In other words, this application uses a rotating shaft to drive the scraper beam and scraper to rotate circumferentially along the scum space. This method occupies little space, covers the circumferential area of ​​the scum space, eliminates the path limitations of straight-line scraping, and allows for continuous operation, preventing scum from re-accumulating after falling back, reducing cleaning dead zones, and achieving excellent scum scraping effect.

[0024] In addition, an overflow plate is installed around the slag baffle, and an overflow space connected to the scum space is formed between the overflow plate and the slag baffle. This allows the liquid in the sedimentation tank to enter the overflow space from the bottom, while the scum at the liquid surface is blocked by the slag baffle and cannot enter the overflow space. At the same time, multiple triangular weirs are distributed at intervals on the overflow plate so that as the liquid level in the overflow space rises, the liquid can be evenly discharged into the clear water area through the triangular weirs, thereby reducing the retention of floating oil. Attached Figure Description

[0025] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] In the attached image:

[0028] Figure 1 This is a structural schematic diagram of a sedimentation tank device according to this application;

[0029] Figure 2 This is a top view schematic diagram of a sedimentation tank device according to this application;

[0030] Figure 3 This is a schematic diagram of the slag scraping mechanism in a sedimentation tank device according to this application;

[0031] Figure 4 yes Figure 3 Enlarged diagram of point A in the middle.

[0032] Icon labels:

[0033] 10. Slag baffle plate; 10a. Slag space; 20. Overflow plate; 21. Triangular weir; 30. Slag collection hopper; 40. Slag scraping mechanism; 41. Power component; 42. Rotating shaft; 43. Slag scraping beam; 44. Slag scraper; 441. Slag scraper plate; 442. First connecting bar; 442a. Notch; 443. Second connecting bar; 444. Auxiliary bar; 45. Working bridge; 50. Limiting plate; 60. Slag guide plate; 70. Overflow space; 80. Connecting block; 90. Flow channel; X, first direction; Y, second direction. Detailed Implementation

[0034] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientations or positional relationships indicated by terms such as "front," "rear," "upper," "lower," "left," "right," "longitudinal," "horizontal," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," and "tail" are based on the orientations or positional relationships shown in the accompanying drawings, and are constructed and operated in a specific orientation. They are only for the convenience of describing this technical solution and do not indicate that the device or component referred to must have a specific orientation; therefore, they should not be construed as limitations on this utility model.

[0035] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," "fixing," and "setting" 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. When an component is referred to as being "on" or "below" another component, the component can be located "directly" or "indirectly" on the other component, or there may be one or more intermediary components. The terms "first," "second," "third," etc., are only for the convenience of describing this technical solution and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," "third," etc., may explicitly or implicitly include one or more of that feature. 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.

[0036] In the following description, specific details such as particular system structures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the present invention. However, those skilled in the art will understand that the present invention can be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0037] Please refer to Figures 1 to 4This application provides a sedimentation tank device, which includes a sedimentation tank, a baffle plate 10, an overflow plate 20, a slag collection hopper 30, and a slag scraping mechanism 40. The sedimentation tank has intersecting first direction X and second direction Y. The baffle plate 10 is disposed on the outer periphery of the sedimentation tank and extends along the first direction Y to the top of the sedimentation tank, thereby forming a slag space 10a arranged circumferentially along the sedimentation tank. The slag space 10a is connected to the sedimentation tank. The slag collection hopper 30 is used to collect slag, and the slag collection hopper 30 is provided with a slag inlet located in the slag space 10a. The overflow plate 20 is disposed on the outer periphery of the baffle plate 10, and an overflow space 70 connected to the sedimentation tank is formed between the overflow plate 20 and the baffle plate 10. Multiple triangular weirs 21 are distributed circumferentially along the overflow plate 20, and the triangular weirs 21 are used to discharge the liquid in the overflow space 70 to the clear water area. The slag scraping mechanism 40 includes a scraper 44, a rotating shaft 42, and at least one scraper beam 43. The rotating shaft 42 is rotatable relative to the sedimentation tank. One end of the scraper beam 43 is connected to the rotating shaft 42, and the other end extends toward the baffle plate 10 and is connected to the scraper 44. The rotation of the rotating shaft 42 drives the scraper beam 43 and the scraper 44 to rotate synchronously within the slag space 10a, causing the scraper beam 43 and the scraper 44 to push the slag in the slag space 10a to the slag collection hopper 30.

[0038] In this embodiment, the sedimentation tank device allows some lightweight and non-settling impurities to float to the surface and form a scum layer due to water flow disturbance and air bubble carrying. The baffle plate 10 set at the top of the sedimentation tank can effectively block the scum, so that the scum remains in the scum space 10a connected to the sedimentation tank, effectively preventing diffusion. Then, the rotating shaft is driven to rotate, so that the scraper beam 43 and scraper 44 rotate circumferentially along the scum space 10a. Since the scraper 44 and scraper beam 43 are parallel to the liquid surface and in contact with the scum suspended on the liquid surface, the rotating scraper 44 and scraper beam 43 work together to push the scum suspended on the liquid surface toward the scum collection hopper 30, and finally enter the scum collection hopper 30, thereby achieving efficient collection of scum. In other words, this application adopts a slag scraping method in which the rotating shaft 42 drives the slag scraping beam 43 and the slag scraper 44 to rotate circumferentially along the slag space 10a. This method occupies little space and can cover the circumferential area of ​​the slag space 10a, eliminating the path restriction of straight slag scraping. At the same time, it can also carry out continuous operation, avoid the slag from falling back and re-accumulating, reduce cleaning dead corners, and has a good slag scraping effect.

[0039] In addition, an overflow plate 20 is provided around the slag baffle 10, and an overflow space 70 communicating with the scum space 10a is formed between the overflow plate 20 and the slag baffle 10. This allows the liquid in the sedimentation tank to enter the overflow space 70 from the bottom, while the scum at the liquid surface is blocked by the slag baffle 10 and cannot enter the overflow space 70. At the same time, multiple triangular weirs 21 are distributed at intervals on the overflow plate 20 so that after the liquid level in the overflow space 70 rises continuously, the liquid can be evenly discharged to the clear water area through the triangular weirs 21, thereby reducing the retention of floating oil.

[0040] It should be noted that the aforementioned scum space 10a refers to the area enclosed along the circumference of the sedimentation tank by the portion of the baffle plate 10 that extends above the sedimentation tank. In practical applications, a portion of the baffle plate 10 extends into the sedimentation tank and is connected to the inner wall of the sedimentation tank via a support, while the other portion extends above the sedimentation tank. That is, after water to be treated is injected into the sedimentation tank, the portion of the baffle plate 10 extending into the sedimentation tank is underwater, while the portion extending above the sedimentation tank is exposed above the water surface. This ensures that some lightweight and non-settling impurities float to the surface and are blocked by the baffle plate, preventing them from flowing into the overflow space and guaranteeing the quality of the effluent.

[0041] Because the scraper beam 43 and scraper 44 come into contact with various media (including water, acid and alkali solutions, etc.) during use, they are prone to corrosion and damage. Furthermore, due to continuous contact with and scraping of scum, they are also susceptible to wear and tear. Therefore, in this embodiment, the scraper beam 43 and scraper 44 can be made of materials with good rigidity and corrosion resistance, specifically including but not limited to stainless steel and aluminum alloy. This ensures that the scraper beam 43 and scraper 44 can effectively resist the erosion of various chemical substances, while also withstanding significant mechanical stress and wear, thus extending the service life of the equipment.

[0042] To improve slag scraping efficiency and reduce slag retention, this embodiment includes two scraper beams 43. These two beams are symmetrically positioned within the slag space relative to the rotation axis and extend along a second direction. One end of each beam near the rotation axis is connected to the rotation axis 42, and the other end is connected to a scraper 44. Thus, when the rotation axis 42 is driven to rotate, the two scraper beams are also driven to rotate, enabling continuous scraping of slag suspended on the liquid surface. This accelerates the movement of slag suspended in the slag space 10a into the slag collection hopper 30, thereby improving scraping efficiency.

[0043] In one embodiment, the slag scraper 44 includes a scraper plate 441, a first connecting bar 442, and a second connecting bar 443. The first connecting bar 442 and the second connecting bar 443 are positioned above the surface of the liquid where the slag is located. The first connecting bar 442 is connected to the scraper beam 43 and extends toward the baffle plate 10. The second connecting bar 443 is adjustablely connected to the end of the first connecting bar 442 near the baffle plate 10, scrapes, and extends away from the first connecting bar. The extension direction of the second connecting bar intersects with the extension direction of the first connecting bar. The slag plate 441 is installed at the end of the second connecting bar 443 away from the first connecting bar 442 and is used to scrape the slag located around the scraper beam 43. In other words, one end of the first connecting strip 442 is connected to the scraper beam 43, and then one end of the second connecting strip 443 is connected to the first connecting strip 442. A scraper plate 441 is installed at the other end of the second connecting strip 443, so that the scraper plate 441 is installed on the periphery of the scraper beam 43. At this time, the slag hopper 30 is located on the scraping path of the scraper plate 441. As the scraper beam 43 rotates, the liquid fluctuates, causing the scum to flow to the periphery of the scraper beam 43. Then, the scraper plate 441 pushes the scum on the periphery of the scraper beam 43 into the slag hopper 30. The above actions are repeated until the scum is completely cleaned. In addition, it should be noted that when the scraper plate 441 and the scraper beam 43 rotate, the scraper plate 441 is located behind the scraper beam 43, so that the scum flows to the periphery of the scraper beam 43, and then the scraper plate 441 pushes the scum into the slag hopper 30. The fixing methods between the first connecting strip 442, the second connecting strip 443, and the scraper beam 43 include, but are not limited to, welding, snap-fitting, or screw fixing, and are not limited thereto.

[0044] Furthermore, the second connecting strip 443 and the first connecting strip 442 near the slag baffle 10 are connected in an adjustable manner. This is so that the angle or height of the scraper 44 can be adjusted according to the thickness of the slag. Taking the adjustment of the height of the scraper 44 as an example, if the scraper 44 is partially immersed in the liquid and the slag scraping efficiency is low, the scraper 44 needs to be raised. At this time, it is only necessary to adjust the second connecting strip 443 relative to the first connecting strip 442 to drive the scraper 44 to move away from the liquid surface, thus completing the height adjustment of the scraper 44. The structure is simple, the adjustment is convenient, and it can effectively improve the slag scraping effect.

[0045] In one embodiment, a notch 442a is provided at the end of the first connecting strip 442 near the slag baffle 10, and a second connecting strip 443 is engaged at the notch 442a, allowing the second connecting strip 443 to move relative to the first connecting strip 442. In practical applications, the second connecting strip 443 is engaged at the notch 442a and then locked using a locking member (not shown) to prevent it from loosening relative to the first connecting strip 442 during rotation, thereby ensuring effective slag scraping. Furthermore, a scraper plate 441 is adjustablely connected to the end of the second connecting strip 443, allowing for angle adjustment based on the thickness of the slag to meet different scraping angle requirements, thus effectively improving the scraping effect.

[0046] In one embodiment, the scraper 44 further includes an auxiliary strip 444, which is connected to the end of the first connecting strip 442 near the baffle plate 10 and located on the side of the scraper 441 away from the baffle plate 10. The auxiliary strip 444 assists the scraper 441 in scraping slag. That is, during the scraping process, when the slag is scraped by the scraper 44, it flows away from the baffle plate 10, resulting in less slag being pushed to the slag collection hopper 30 and low scraping efficiency. Therefore, in this embodiment, an auxiliary strip 444 is provided on the side of the scraper 441 away from the baffle plate 10 to block the slag during the scraping process of the scraper 44, thus playing a synergistic role and improving the efficiency and effectiveness of scraping.

[0047] In one embodiment, the scraper 44 further includes a rubber pad (not shown), which is detachably fixed to the surface of the scraper plate 441 used for scraping scum. Thus, the rubber pad acts as a buffer layer between the scraper plate 441 and the scum, effectively reducing direct friction between the scraper plate 441 and the scum, thereby reducing wear on the scraper plate 441. Simultaneously, the rubber pad better conforms to the liquid surface, ensuring no gaps between the scraper plate 441 and the liquid surface, thereby more thoroughly removing scum and reducing scum residue. Furthermore, the rubber pad is detachable, allowing for quick replacement when worn or damaged, without needing to replace the entire scraper plate 441.

[0048] In one embodiment, the slag scraping mechanism 40 further includes a working bridge 45 and a power component 41. The working bridge 45 is disposed above the slag space 10a, and the power component 41 is fixed on the working bridge 45. The output shaft of the power component 41 passes through the working bridge 45 and is connected to the rotating shaft 42. In this way, the working bridge 45 can bear the weight of the power component 41, play a role in fixing the entire slag scraping device, and at the same time provide convenience for maintenance personnel.

[0049] The aforementioned power component 41 provides the necessary power to drive the rotating shaft 42. It can be an electric motor or a power component in the prior art that can drive the rotating shaft 42 to rotate, and there is no limitation on the latter.

[0050] In one embodiment, the sedimentation tank device further includes a limiting plate 50 disposed within the scum space 10a. The limiting plate 50 is located on the side of the scum collection hopper 30 away from the baffle plate 10 and extends partially in the rotation direction of the scraper beam 43. A flow channel 90 is formed between the limiting plate 50 and the baffle plate 10 to guide the scum to flow into the scum collection hopper 30. Thus, when the scraper 44 pushes the scum, the scum is pushed into the flow channel 90 and then guided towards the scum collection hopper 30, which helps to improve the scraping efficiency.

[0051] In one embodiment, guide plates 60 are provided on both sides of the slag inlet of the slag collection hopper 30. The guide plates 60 are used to assist the slag in the flow channel to flow into the slag collection hopper 30. In this way, it is easier for the slag to enter the slag collection hopper 30 and the retention of slag is reduced.

[0052] In one embodiment, the overflow plate 20 and the slag-blocking plate 10 are concentrically arranged, and the overflow plate 20 is connected to the slag-blocking plate 10 via a connecting block 80. In this way, the spacing of the overflow space 70 formed between the overflow plate 20 and the slag-blocking plate 10 can be ensured to be the same, so that the overflow is uniformly distributed outward.

[0053] In one embodiment, the slag outlet of the slag collection hopper 30 is connected to a slag discharge pipe, which is used to discharge the slag in the slag collection hopper 30 to the outside of the sedimentation tank. In this way, the slag entering the slag collection hopper 30 is discharged into the sedimentation tank in a timely manner by using the slag discharge pipe, preventing the slag collected in the slag collection hopper 30 from overflowing back to the liquid surface.

[0054] It is understood that the above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present utility model patent. It should be noted that for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present utility model, all of which fall within the protection scope of the present utility model. Therefore, all equivalent transformations and modifications made within the scope of the claims of the present utility model should fall within the coverage of the claims of the present utility model.

Claims

1. A sedimentation tank apparatus, characterized in that, include: A sedimentation tank having intersecting first and second directions; A slag baffle is disposed on the outer periphery of the sedimentation tank and extends along the first direction to the top of the sedimentation tank, thereby forming a slag space arranged circumferentially along the sedimentation tank, the slag space being connected to the sedimentation tank. A slag collection hopper is used to collect slag, and the slag collection hopper is provided with a slag inlet located in the slag space; An overflow plate is provided on the outer periphery of the slag baffle plate, and an overflow space communicating with the sedimentation tank is formed between the overflow plate and the slag baffle plate. Multiple triangular weirs are distributed at intervals along the circumference of the overflow plate, and the triangular weirs are used to drain the liquid in the overflow space to the clear water area. The slag scraping mechanism includes a slag scraper, a rotating shaft, and at least one slag scraping beam. The rotating shaft is rotatable relative to the sedimentation tank. One end of the slag scraping beam is connected to the rotating shaft, and the other end extends toward the baffle plate and is connected to the slag scraper. Furthermore, the rotation of the rotating shaft can drive the scraper beam and the scraper to rotate synchronously within the scum space, so that the scraper beam and the scraper push the scum in the scum space to the scum collection hopper.

2. The sedimentation tank apparatus according to claim 1, characterized in that, The slag scraper beam is provided in two parts, which are symmetrically arranged in the slag space relative to the rotation axis. The ends of the two slag scraper beams near the rotation axis are connected to the rotation axis, and the other ends are connected to the slag scraper.

3. The sedimentation tank apparatus according to claim 1, characterized in that, The scum scraper includes a scraper plate, a first connecting strip, and a second connecting strip. The first connecting strip and the second connecting strip are positioned above the surface of the liquid where the scum is located. The first connecting strip is connected to the scraper beam and extends toward the baffle plate. The second connecting strip is adjustablely connected to the end of the first connecting strip near the baffle plate and extends away from the first connecting strip. The extension direction of the second connecting strip intersects with the extension direction of the first connecting strip. The scraper plate is installed at the end of the second connecting strip away from the first connecting strip and is used to scrape the scum located around the scraper beam.

4. The sedimentation tank apparatus according to claim 3, characterized in that, The first connecting strip has a notch at one end near the slag baffle, and the second connecting strip is engaged at the notch so that the second connecting strip can move relative to the first connecting strip.

5. The sedimentation tank apparatus according to claim 3, characterized in that, The scraper is adjustablely connected to the end of the second connecting strip.

6. The sedimentation tank apparatus according to claim 3, characterized in that, The scraper also includes an auxiliary strip, which is connected to one end of the scraper beam near the baffle plate and located on the side of the scraper plate away from the baffle plate, to assist the scraper plate in scraping slag.

7. The sedimentation tank apparatus according to claim 3, characterized in that, The scraper also includes a rubber pad, which is detachably fixed to the scraper plate on the surface used for scraping slag.

8. The sedimentation tank apparatus according to claim 1, characterized in that, The slag scraping mechanism also includes a working bridge and a power component. The working bridge is located above the slag space, and the power component is fixed on the working bridge. The output shaft of the power component passes through the working bridge and is connected to the rotating shaft.

9. The sedimentation tank apparatus according to claim 1, characterized in that, The sedimentation tank device also includes a limiting plate disposed in the scum space. The limiting plate is located on the side of the scum collection hopper opposite to the scum baffle plate and extends partially toward the rotation direction of the scum scraper beam. A flow channel for guiding the scum to flow into the scum collection hopper is formed between the limiting plate and the scum baffle plate. When the slag scraper beam and the slag scraper rotate synchronously in the slag space, the slag is pushed into the flow channel.

10. The sedimentation tank apparatus according to claim 9, characterized in that, The slag collection hopper is provided with guide plates on both sides of the slag inlet, which are used to assist the floating slag in the flow channel to flow into the slag collection hopper.

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