Cleaning device for secondary sedimentation tank

Abstract

The utility model discloses a cleaning device for a secondary sedimentation tank, the secondary sedimentation tank comprises a mud scraper walking bridge and an effluent weir located below the mud scraper walking bridge, the mud scraper walking bridge can move along the extension direction of the effluent weir, the cleaning device is connected to the mud scraper walking bridge and can move along with the mud scraper walking bridge, the effluent weir comprises side walls opposite along a first direction, and the side walls are arranged on the side walls. The cleaning device comprises a main connecting frame fixedly connected with the mud scraper walking bridge; the rubber scraping plate is movably connected with the main connecting frame and comprises side wall scraping pieces which are oppositely arranged in the first direction, the rubber scraping plate is located between the side walls, and the length of the rubber scraping plate in the first direction is matched with the distance between the opposite side walls; the rubber scraping plate is movably connected with the main connecting frame, in the process that the mud scraper walking bridge drives the cleaning device to move in the extending direction of the effluent weir, the rubber scraping plate can swing in the first direction, and the edge of the side wall scraping piece is kept attached to the side wall so as to clean the side wall. By the adoption of the technical scheme, cleaning dead corners can be avoided, and cleaning is more thorough.

Description

Technical Field

[0001] The utility model relates to the field of sewage treatment, in particular to a cleaning device for a secondary sedimentation tank. Background Art

[0002] As a key structure in the sewage treatment process, the secondary sedimentation tank's primary function is to effectively separate activated sludge from treated water, ensuring that effluent quality meets standards. However, during operation, due to the humid environment, sunlight (especially near the water surface), and the accumulation of nutrients in the water, moss is highly susceptible to growth on the tank walls, particularly the side walls and surrounding areas. This moss not only detracts from the tank's aesthetics but, more importantly, reduces the tank's hydrophilicity, causing sludge to cling to the walls, severely impacting sludge-water separation. It can even clog scrapers or weirs, reducing treatment efficiency and increasing operational complexity.

[0003] Currently, manual cleaning of moss from the sidewalls of secondary sedimentation tanks is labor-intensive, inefficient, and poses safety risks. High-pressure water jets, while effective, require high water volumes, struggle to completely remove tightly adhered moss, and may disturb settled sludge. Therefore, the development of specialized mechanical cleaning devices has become a key focus within the industry. Existing secondary sedimentation tank moss cleaning devices are typically designed to move within the tank (e.g., with a scraper or independently driven), cleaning the sidewalls using brushes, scrapers, or sprayers.

[0004] However, in actual applications, these existing devices often overlook a problem, that is, due to possible irregularities in the walls of the secondary sedimentation tank (such as construction deviations, local protrusions or attachments), cleaning components (such as brush heads or scrapers) are often difficult to achieve a completely tight fit with the side walls of the secondary sedimentation tank. At the same time, due to deviations in construction and manufacturing, the overall shape of the secondary sedimentation tank may not be a perfect circle, that is, the radius of the secondary sedimentation tank is not equal everywhere, and its shape may even be closer to an ellipse. Therefore, during the cleaning process, there is a certain gap or "dead zone" between the device and the tank wall, making it impossible to effectively contact and remove the moss in these areas. This problem is particularly prominent in corners, structural joints, or places where there are tiny depressions in the tank wall. The end result is incomplete cleaning, repeated growth of moss, and the need for more frequent cleaning. It is impossible to fundamentally solve the problem of moss adhesion, and it fails to give full play to the efficiency advantages that the mechanical cleaning device should have. Utility Model Content

[0005] To solve the above technical problems, the embodiment of the present utility model discloses a cleaning device for a secondary sedimentation tank, the secondary sedimentation tank includes a scraper walking bridge and a water outlet weir located below the scraper walking bridge, the scraper walking bridge can move along the extension direction of the water outlet weir, the cleaning device is connected to the scraper walking bridge and can move with the movement of the scraper walking bridge, the water outlet weir includes side walls opposite to each other along a first direction, and the cleaning device includes:

[0006] The main connecting frame is fixedly connected to the scraper walking bridge;

[0007] a rubber scraper movably connected to the main connecting frame, comprising side wall scrapers arranged opposite to each other along a first direction, the rubber scraper being located between the side walls, the length of the rubber scraper in the first direction matching the distance between the opposite side walls;

[0008] Among them, the rubber scraper is movably connected to the main connecting frame, so that when the scraper walking bridge drives the cleaning device to move along the extension direction of the water outlet weir, the rubber scraper can swing along the first direction to keep the edge of the side wall scraper in contact with the side wall to clean the side wall.

[0009] The above technical solution is more in line with the actual situation of the secondary sedimentation tank. Even if the overall shape of the secondary sedimentation tank is not a perfect circle, or there are irregular structures on the side walls of the secondary sedimentation tank, since the rubber scraper is not strictly fixed on the main connecting frame, but can be flexibly swung along the first direction, the edge of the side wall scraper can remain in contact with the side wall, avoiding cleaning dead corners and cleaning more thoroughly.

[0010] Optionally, the cleaning device includes a movable connecting piece, and the rubber scraper is movably connected to the main connecting frame through the movable connecting piece. The movable connecting piece is a connecting rod mechanism, and the movable connecting piece includes a first connecting rod, a second connecting rod and a third connecting rod. The first connecting rod and the second connecting rod are arranged opposite to each other along the first direction, and the third connecting rod is connected to the side wall scraper and extends along the first direction. The third connecting rod is hinged to the first connecting rod and the second connecting rod, respectively, and the first connecting rod and the second connecting rod are respectively hinged to the main connecting frame.

[0011] Optionally, the water outlet weir includes a bottom wall, and the rubber scraper includes a bottom wall scraper for cleaning the bottom wall, and both ends of the bottom wall scraper are respectively connected to the side wall scrapers.

[0012] Optionally, both ends of the bottom wall scraper are hinged to the side wall scrapers respectively.

[0013] Optionally, the side wall scraper and the bottom wall scraper are respectively composed of angle iron, stainless steel strip and rubber sheet, the angle iron and the stainless steel strip clamp the rubber sheet, the rubber sheet includes a side edge and another side edge opposite to each other in the first direction, the one side edge is connected to the third connecting rod through the angle iron and the stainless steel strip, and the other side edge scrapes and cleans the side wall.

[0014] Optionally, the cleaning device also includes a sub-connecting frame and a wire brush, the sub-connecting frame is located on both sides of the main connecting frame along the first direction, the wire brush is hung on the sub-connecting frame, the water outlet weir includes a weir mouth, the wire brush is located above the weir mouth, and the wire brush is used to clean the weir mouth.

[0015] Optionally, the auxiliary connecting frame includes at least one hanging connecting member, one end of the hanging connecting member is hinged to the auxiliary connecting frame, and the other end of the hanging connecting member is hung with the wire brush.

[0016] Optionally, the auxiliary connecting frame includes a first hanging connecting member and a second hanging connecting member, one end of the first hanging connecting member and the second hanging connecting member are hinged to the auxiliary connecting frame, and the other end is respectively hung with the wire brush, and the first hanging connecting member and the second hanging connecting member form an angle at the hinge.

[0017] Optionally, the auxiliary connecting frame is an angle iron, and / or the wire brush is fixed to the other end of the hanging connector through a clamp.

[0018] Optionally, the main connecting frame includes a first vertical angle iron, a second vertical angle iron and a transverse angle iron, the first vertical angle iron and the second vertical angle iron are arranged opposite to each other along the first direction, the two ends of the transverse angle iron are respectively fixedly connected to the lower ends of the first vertical angle iron and the second vertical angle iron, the upper ends of the first vertical angle iron and the second vertical angle iron are fixedly connected to the scraper walking bridge, the auxiliary connecting frame is fixedly connected to the first vertical angle iron and the second vertical angle iron, and the first connecting rod and the second connecting rod are respectively hinged to the transverse angle iron. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the top view of the second sedimentation tank in one embodiment of the present invention is shown;

[0020] Figure 2 A schematic structural diagram of a cleaning device according to one embodiment of the present invention is shown.

[0021] 1. Secondary sedimentation tank;

[0022] 2. Cleaning device, 21. Main connecting frame, 21a. First vertical angle iron, 21b. Second vertical angle iron, 21c. Horizontal angle iron, 22. Rubber scraper, 23. Side wall scraper, 24. Movable connector, 24a. First connecting rod, 24b. Second connecting rod, 24c. Third connecting rod, 25. Bottom wall scraper, 26. Stainless steel pressure strip, 27. Rubber sheet, 28. Secondary connecting frame, 29. Hanging connector, 29a. First hanging connector, 29b. Second hanging connector;

[0023] 3. Mud scraper walking bridge;

[0024] 4. Outlet weir. DETAILED DESCRIPTION

[0025] The following is an explanation of the implementation of the present invention by means of specific specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this utility model are limited to this implementation. On the contrary, the purpose of introducing the utility model in conjunction with the implementation is to cover other options or modifications that may be extended based on the claims of the present invention. In order to provide an in-depth understanding of the present invention, the following description will contain many specific details. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present invention, some specific details will be omitted in the description. It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0026] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0027] The terms “first”, “second”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0028] In the description of this embodiment, it should be noted that, unless otherwise specified or limited, the terms "disposed," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this embodiment based on specific circumstances.

[0029] In order to make the purpose, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0030] Combine Figure 1 and Figure 2 The utility model discloses a cleaning device 2 for a secondary sedimentation tank 1. The secondary sedimentation tank 1 includes a scraper walking bridge 3 and a water outlet weir 4 located below the scraper walking bridge. The scraper walking bridge 3 can move along the extension direction of the water outlet weir 4, that is, the scraper walking bridge 3 can make circular motion or approximately circular motion above the water outlet weir 4. The cleaning device 2 is connected to the scraper walking bridge 3, specifically, it can be connected to the bridge frame of the scraper walking bridge 3. In this way, the cleaning device 2 can move with the movement of the scraper walking bridge 3, that is, the power of the scraper walking bridge 3 is also the power of the cleaning device 2, and there is no need to provide an additional power source for the cleaning device 2. The water outlet weir 4 includes a first direction (the first direction is, for example, Figure 2 The cleaning device 2 comprises:

[0031] The main connecting frame 21 is fixedly connected to the scraper walking bridge 3. For example, it can be welded to the scraper walking bridge 3.

[0032] The rubber scraper 22 is movably connected to the main connecting frame 21 and includes side wall scrapers 23 arranged opposite to each other along a first direction. The rubber scraper 22 is located between the side walls. The length of the rubber scraper 22 in the first direction matches the distance between the opposite side walls. That is, when the cleaning device 2 is connected to the scraper walking bridge 3, the rubber scraper 22 is placed in the groove of the water outlet weir 4, and the edge of its side wall scraper 23 is able to fit exactly with the side wall. When the cleaning device 2 moves along the extension direction of the water outlet weir 4 together with the scraper walking bridge 3, the side wall scraper 23 can clean the side wall.

[0033] Among them, the rubber scraper 22 is movably connected to the main connecting frame 21, so that when the scraper walking bridge 3 drives the cleaning device 2 to move along the extension direction of the water outlet weir 4, the rubber scraper 22 can swing along the first direction to keep the edge of the side wall scraper 23 in contact with the side wall to clean the side wall, that is, the rubber scraper 22 can not only move along the extension direction of the water outlet weir 4 with the scraper walking bridge 3, but also swing in the first direction at the same time.

[0034] In actual situations, the channel of the outlet weir 4 needs to have a consistent width in the first direction, that is, the distance between the opposite side walls in the first direction remains consistent. Since the length of the rubber scraper 22 in the first direction matches the distance between the opposite side walls, the edge of the side wall scraper 23 is generally always in contact with the side wall. However, in the case of errors in construction and manufacturing, the secondary sedimentation tank 1 may not be a regular circle, and its radius is not equal everywhere. The secondary sedimentation tank 1 may even be closer to an ellipse. In this way, when the connection position of the cleaning device 2 and the scraper walking bridge 3 remains unchanged, the side wall of the outlet weir 4 and the side wall scraper 23 cannot actually always fit together. This will also cause some places to be unable to be cleaned and moss to grow. In addition, there may be irregular structures on the side wall of the secondary sedimentation tank 1, which also makes it impossible for the side wall of the outlet weir 4 to always fit together with the side wall scraper 23. Therefore, in the embodiment of the present invention, the rubber scraper 22 is not fixed, but can swing along the first direction, and has a certain flexibility and maneuverability. In this way, the rubber scraper 22 can actually be fine-tuned in the first direction, and the rubber scraper 22 can be adjusted accordingly according to the changing radius or the changing sidewall structure. For example, when moved to a place where the radius of the secondary sedimentation tank 1 becomes smaller, the rubber scraper 22 can swing toward the center of the secondary sedimentation tank in the first direction. When moved to a place where the radius of the secondary sedimentation tank 1 becomes larger, the rubber scraper 22 can swing toward the outside of the secondary sedimentation tank in the first direction. At the same time, because it is made of rubber, the rubber scraper 22 can also undergo certain deformation according to the actual shape of the side wall while swinging, and further conform to the actual shape of the side wall. Through this arrangement, the cleaning device 2 can adapt to the actual situation of the secondary sedimentation tank 1, avoid the occurrence of cleaning "dead corners", make cleaning more thorough, further reduce the impact of pollutants such as moss on the work of the secondary sedimentation tank 1, and improve the sustainability and efficiency of the work of the secondary sedimentation tank 1.

[0035] Specifically, the sidewall scraper 23 forms an angle with the sidewall surface. More specifically, the sidewall scraper 23 is perpendicular to the sidewall surface.

[0036] In the embodiment of the present invention, the water outlet of the secondary sedimentation tank 1 is further provided with a collection net for collecting pollutants such as moss.

[0037] In the embodiment of the present utility model, as Figure 2As shown, the cleaning device 2 includes a movable connecting member 24, through which the rubber scraper 22 is movably connected to the main connecting frame 21. Specifically, the movable connecting member 24 is a connecting rod mechanism, which includes a first connecting rod 24a, a second connecting rod 24b, and a third connecting rod 24c. The first connecting rod 24a and the second connecting rod 24b are arranged opposite each other along a first direction. The third connecting rod 24c is connected to the side wall scraper 23 and extends along the first direction. The third connecting rod 24c is hinged to the first connecting rod 24a and the second connecting rod 24b, respectively. The first connecting rod 24a and the second connecting rod 24b are respectively hinged to the main connecting frame 21. Through this connection method, the rubber scraper 22 can be conveniently and reliably connected to the main connecting frame 21. With the help of the flexibility of the connecting rod mechanism, the adaptability of the rubber scraper 22 to changes in the external environment is improved, thereby enhancing its maneuverability.

[0038] In the embodiment of the present utility model, as Figure 2 The water outlet weir 4 includes a bottom wall, and the rubber scraper 22 includes a bottom wall scraper 25 for cleaning the bottom wall. The two ends of the bottom wall scraper 25 are respectively connected to the side wall scraper 23. The inner wall of the water outlet weir 4 is cleaned together by the side wall scraper 23 and the bottom wall scraper 25.

[0039] Furthermore, the side wall scraper 23 and the bottom wall scraper 25 are integrally formed and can be manufactured and connected to the cleaning device 2 together.

[0040] In the embodiment of the present invention, both ends of the bottom wall scraper 25 are respectively hinged to the side wall scraper 23. In this way, the bottom wall scraper 25 also has flexibility. When the bottom wall has an irregular structure, the bottom wall scraper 25 can be adjusted flexibly to avoid the generation of cleaning "dead corners".

[0041] In the embodiment of the present utility model, further reference is made to Figure 2 Specifically, the sidewall scraper 23 and bottom wall scraper 25 are each composed of an angle iron (not shown), a stainless steel bead 26, and a rubber sheet 27. The angle iron and stainless steel bead 26 hold the rubber sheet 27 in place. The rubber sheet 27 includes one side edge and another side edge that are opposite each other in a first direction. One side edge is connected to the third connecting rod 24c via the angle iron and stainless steel bead 26, while the other side edge scrapes and cleans the sidewall. This connection method allows the rubber sheet 27 to be more securely mounted, allowing it to continuously clean the sidewall.

[0042] In the embodiment of the present invention, preferably, the rubber sheets of the bottom wall scraper 25 and the side wall scraper 23 are both made of rubber material with higher hardness, which can have a longer service life and a stronger cleaning ability.

[0043] In the embodiment of the present invention, further, as Figure 2As shown, the cleaning device also includes a secondary connecting frame 28 and a wire brush (not shown in the figure). The secondary connecting frame 28 is located on both sides of the main connecting frame 21 along the first direction. The wire brush is hung on the secondary connecting frame 28. The water outlet weir 4 includes a weir mouth, such as a triangular weir mouth. The wire brush is located above the weir mouth and can clean the weir mouth, further preventing moss from growing at the weir mouth. The wire brush has high strength and hardness, which can prevent damage to the weir mouth structure. Specifically, the secondary connecting frame 28 includes at least one hanging connector 29, one end of which is connected to the secondary connecting frame 28, and the other end of the hanging connector 29 is hung with a wire brush. The wire brush can be fixed to the other end of the hanging connector 29 by a clamp, making the connection more stable.

[0044] Specifically, one end of the hanging connector 29 is hinged to the auxiliary connecting frame 28, and the hanging connector 29 can also swing to drive the wire brush to move. In this way, if the weir has an irregular shape, the wire brush can also be flexibly adjusted.

[0045] In the embodiment of the present utility model, as Figure 2 As shown, the auxiliary connecting frame 28 includes a first hanging connecting member 29a and a second hanging connecting member 29b. One end of the first hanging connecting member 29a and the second hanging connecting member 29b are hinged to the auxiliary connecting frame 28, and the other end is respectively hung with a wire brush. The first hanging connecting member 29a and the second hanging connecting member 29b form an angle at the hinge. In other words, the two wire brushes are connected to the same connection point. Because the first hanging connecting member 29a and the second hanging connecting member 29b are opened to form a certain angle, there is a certain distance between the two wire brushes, so that they can be used to clean different locations.

[0046] In the embodiment of the present invention, specifically, the auxiliary connecting frame 28 is an angle iron, which can be more conveniently connected to the main connecting frame 21, for example, by welding.

[0047] In the embodiment of the present utility model, as Figure 2 , and combined with Figure 1 The main connecting frame 21 includes a first vertical angle iron 21a, a second vertical angle iron 21b, and a transverse angle iron 21c. The first vertical angle iron 21a and the second vertical angle iron 21b are arranged relative to each other along a first direction. The two ends of the transverse angle iron 21c are fixedly connected to the lower ends of the first vertical angle iron 21a and the second vertical angle iron 21b, respectively. The upper ends of the first vertical angle iron 21a and the second vertical angle iron 21b are fixedly connected to the scraper walking bridge 3. The auxiliary connecting frame 28 is fixedly connected to the first vertical angle iron 21a and the second vertical angle iron 21b. The first connecting rod 24a and the second connecting rod 24b are respectively hinged to the transverse angle iron 21c. With this arrangement, the structure of the cleaning device 2 is more stable, the connections at each position are relatively more stable, and it is easy to process.

[0048] Although the present invention has been illustrated and described with reference to certain preferred embodiments of the present invention, it should be understood by those skilled in the art that the above description is provided to further illustrate the present invention in conjunction with specific embodiments, and that the present invention should not be construed as being limited to these descriptions. Those skilled in the art may make various changes in form and detail, including simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A cleaning device for a secondary sedimentation tank, characterized in that: The secondary sedimentation tank includes a scraper walking bridge and a water outlet weir located below the scraper walking bridge, the scraper walking bridge can move along the extension direction of the water outlet weir, the cleaning device is connected to the scraper walking bridge and can move with the movement of the scraper walking bridge, the water outlet weir includes side walls opposite to each other along a first direction, and the cleaning device includes: A main connecting frame, fixedly connected to the scraper walking bridge; a rubber scraper movably connected to the main connecting frame, comprising side wall scrapers arranged opposite to each other along the first direction, the rubber scraper being located between the side walls, and the length of the rubber scraper in the first direction matching the distance between the opposite side walls; In which, the rubber scraper is movably connected to the main connecting frame, so that when the scraper walking bridge drives the cleaning device to move along the extension direction of the water outlet weir, the rubber scraper can swing along the first direction to make the edge of the side wall scraper remain in contact with the side wall to clean the side wall.

2. The cleaning device according to claim 1, wherein The cleaning device includes a movable connecting piece, and the rubber scraper is movably connected to the main connecting frame through the movable connecting piece. The movable connecting piece is a connecting rod mechanism, and the movable connecting piece includes a first connecting rod, a second connecting rod and a third connecting rod. The first connecting rod and the second connecting rod are arranged opposite to each other along the first direction. The third connecting rod is connected to the side wall scraper and extends along the first direction. The third connecting rod is hinged to the first connecting rod and the second connecting rod respectively. The first connecting rod and the second connecting rod are hinged to the main connecting frame respectively.

3. The cleaning device according to claim 2, wherein: The water outlet weir includes a bottom wall, and the rubber scraper includes a bottom wall scraper for cleaning the bottom wall, and both ends of the bottom wall scraper are respectively connected to the side wall scrapers.

4. The cleaning device according to claim 3, wherein Both ends of the bottom wall scraper are hinged to the side wall scrapers respectively.

5. The cleaning device according to claim 3, wherein: The side wall scraper and the bottom wall scraper are respectively composed of angle iron, stainless steel strip and rubber sheet, the angle iron and the stainless steel strip clamp the rubber sheet, the rubber sheet includes a side edge and another side edge opposite to each other in the first direction, the one side edge is connected to the third connecting rod through the angle iron and the stainless steel strip, and the other side edge scrapes and cleans the side wall.

6. The cleaning device according to claim 3, wherein: The cleaning device also includes a secondary connecting frame and a wire brush. The secondary connecting frame is located on both sides of the main connecting frame along the first direction. The wire brush is hung on the secondary connecting frame. The water outlet weir includes a weir mouth. The wire brush is located above the weir mouth. The wire brush is used to clean the weir mouth.

7. The cleaning device according to claim 6, wherein The auxiliary connecting frame includes at least one hanging connecting piece, one end of the hanging connecting piece is hinged to the auxiliary connecting frame, and the other end of the hanging connecting piece is hung with the wire brush.

8. The cleaning device according to claim 7, wherein: The auxiliary connecting frame includes a first hanging connecting member and a second hanging connecting member. One end of the first hanging connecting member and the second hanging connecting member are hinged to the auxiliary connecting frame, and the other end is respectively hung with the wire brush. The first hanging connecting member and the second hanging connecting member form an angle at the hinge.

9. The cleaning device according to claim 8, wherein The auxiliary connecting frame is an angle iron, and / or the wire brush is fixed to the other end of the hanging connector through a clamp.

10. The cleaning device according to claim 9, wherein The main connecting frame includes a first vertical angle iron, a second vertical angle iron and a transverse angle iron. The first vertical angle iron and the second vertical angle iron are arranged opposite to each other along the first direction. The two ends of the transverse angle iron are respectively fixedly connected to the lower ends of the first vertical angle iron and the second vertical angle iron. The upper ends of the first vertical angle iron and the second vertical angle iron are fixedly connected to the scraper walking bridge. The auxiliary connecting frame is fixedly connected to the first vertical angle iron and the second vertical angle iron. The first connecting rod and the second connecting rod are respectively hinged to the transverse angle iron.

Images