Self-cleaning air flotation device for sewage treatment
By introducing a design that combines an inclined cleaning plate with a chute in the air flotation device, the problem of difficult-to-clean scum on the scraper surface is solved, enabling timely scraping of scum without the need for additional power to return, thus improving the scum removal effect and the stability of the transmission structure.
Patent Information
- Application Number
- CN202522270190.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-27
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2035-10-27
AI Technical Summary
In existing air flotation devices, the scum remaining on the scraper surface is difficult to clean, affecting the scum removal effect and potentially causing jamming or wear of the transmission structure.
Design a self-cleaning air flotation device. An inclined cleaning plate is set above the slag storage area. The cleaning plate is in contact with the surface of the scraper after the scraper has finished scraping the slag. The plate slides and scrapes off the residual slag and falls back to the slag storage area under the action of gravity.
It enables timely cleaning of scum on the scraper surface, prevents scum from dripping and hardening, reduces the impact on the transmission structure, and allows the cleaning plate to be restored without additional power, thus improving scum removal efficiency and device stability.
Smart Images
Figure CN223633156U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of sewage treatment, in particular to a self-cleaning air flotation device for sewage treatment. BACKGROUND
[0002] The air flotation device is a common sewage treatment equipment, which releases micron-sized bubbles through a dissolved air system, so that suspended particles adhere to form a scum layer, and then the scum layer is scraped into a residue storage area by a scraper to achieve removal. After the scraper scrapes the scum layer into the residue storage area, part of the scum remains on the surface of the scraper, and the remaining scum will return to the water body in the residue scraping area with the scraper, reducing the residue removal effect. The remaining scum will harden after a long time, making it more difficult to clean. Moreover, when the scraper moves above the transmission chain and other transmission components, the remaining scum may drip onto the transmission chain or transmission gear, affecting the lubricity of the transmission structure and possibly causing the transmission structure to jam or wear. CONTENT OF THE UTILITY MODEL
[0003] The purpose of the present application is to provide a self-cleaning air flotation device for sewage treatment, which can clean the scum remaining on the surface of the scraper after the scraper completes residue scraping, thereby reducing the impact of the scum remaining on the surface of the scraper.
[0004] The embodiments of the present application are implemented as follows:
[0005] The present application provides a self-cleaning air flotation device for sewage treatment, comprising:
[0006] The pool body includes adjacent residue scraping areas and residue storage areas, which are separated by a partition plate. The pool body has installation plates on both sides of the top corresponding to the residue scraping areas and the residue storage areas.
[0007] The residue scraping unit includes a transmission wheel, a conveying member, and a scraper. The transmission wheel is rotatably connected to the installation plate. The conveying member is located above the residue scraping area and is in transmission connection with the transmission wheel. The two ends of the scraper in the length direction are connected to the conveying member.
[0008] The self-cleaning unit comprises a cleaning plate and a movable table, the cleaning plate is arranged above the residue storage area in a preset inclined direction, the bottom end of the cleaning plate in the height direction is located on the side close to the top end of the residue scraping area, the bottom end of the cleaning plate is in contact with the upper surface of the scraper after the scraper completes the residue scraping, both end faces of the cleaning plate in the length direction are provided with first sliding shafts and second sliding shafts, the first sliding shafts and the second sliding shafts are spaced apart at a preset interval distance along the preset inclined direction, the movable table is located above the residue storage area and is connected with the mounting plate, the movable table is provided with first sliding grooves and second sliding grooves, the first sliding grooves and the second sliding grooves are spaced apart at a preset interval distance along the preset inclined direction, the first sliding shafts are slidably matched with the first sliding grooves, the second sliding shafts are slidably matched with the second sliding grooves, the positions of the first sliding grooves and the second sliding grooves gradually increase in the direction away from the residue scraping area, the included angle between the cleaning plate and the upper surface of the scraper is less than 90° during the upward movement of the cleaning plate after the scraper completes the residue scraping, and the bottom end of the cleaning plate is slidably matched with the upper surface of the scraper until the bottom end of the cleaning plate is separated from the end of the scraper.
[0009] In some embodiments, the top of the partition plate has an inclined section inclined toward the residue storage area, when the end of the scraper moves to the top end of the inclined section, the bottom end of the cleaning plate starts to contact the upper surface of the scraper.
[0010] In some embodiments, when the bottom end of the cleaning plate starts to contact the upper surface of the scraper, the bottom end of the cleaning plate is located on the side close to the conveying member of the center line of the scraper.
[0011] In some embodiments, when the scraper moves upward to the horizontal state, the bottom end of the cleaning plate moves to the end of the scraper.
[0012] In some embodiments, the included angle between the preset inclined direction and the horizontal direction is 30°-60°.
[0013] In some embodiments, the first sliding shafts are aligned with the top end of the cleaning plate.
[0014] In some embodiments, in the preset inclined direction, the height of the cleaning plate is L, and the preset interval distance is less than 0.5L.
[0015] In some embodiments, the lower surface of the cleaning plate is provided with a counterweight, and the counterweight is located below the first sliding shafts and the second sliding shafts.
[0016] In some embodiments, the bottom end of the cleaning plate is provided with a buffer.
[0017] In some embodiments, the buffer comprises a roller brush, and the roller brush is rotatably connected to the bottom end of the cleaning plate.
[0018] The self-cleaning air flotation device for sewage treatment provided by the embodiments has the following beneficial effects:
[0019] In the process of upward movement after the completion of the scraping of the slag by the scraper, the bottom end of the cleaning plate is slidably matched with the upper surface of the scraper until it is separated from the end of the scraper, in which process the cleaning plate scrapes off the floating slag remaining on the surface of the scraper, reduces the remaining floating slag on the surface of the scraper, and is conducive to reducing the influence of the remaining floating slag on the surface of the scraper.
[0020] In the process of upward movement after the completion of the scraping of the slag by the scraper, the bottom end of the cleaning plate is slidably matched with the upper surface of the scraper until it is separated from the end of the scraper, in which process the cleaning plate scrapes off the floating slag remaining on the surface of the scraper, reduces the remaining floating slag on the surface of the scraper, and is conducive to reducing the influence of the remaining floating slag on the surface of the scraper.
[0021] In the process of upward movement after the completion of the scraping of the slag by the scraper, the bottom end of the cleaning plate is slidably matched with the upper surface of the scraper until it is separated from the end of the scraper, in which process the cleaning plate scrapes off the floating slag remaining on the surface of the scraper, reduces the remaining floating slag on the surface of the scraper, and is conducive to reducing the influence of the remaining floating slag on the surface of the scraper. BRIEF DESCRIPTION OF DRAWINGS
[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor.
[0023] Figure 1 A structure schematic diagram of a self-cleaning gas float device for sewage treatment provided by the embodiment of the present application in the first working state;
[0024] Figure 2 A structure schematic diagram of a self-cleaning gas float device for sewage treatment provided by the embodiment of the present application in the first working state; Figure 1 A partial enlarged view of II in the middle;
[0025] Figure 3 A structure schematic diagram of a self-cleaning gas float device for sewage treatment provided by the embodiment of the present application in the second working state;
[0026] Figure 4 A structure schematic diagram of a self-cleaning gas float device for sewage treatment provided by the embodiment of the present application in the second working state; Figure 3 A partial enlarged view of IV in the middle;
[0027] Figure 5A structure schematic view of a self-cleaning gas float device for sewage treatment in a third working state according to an embodiment of the present application;
[0028] Figure 6 For Figure 5 A local enlarged view at VI in FIG. 1;
[0029] Figure 7 A structure schematic view of a cleaning plate according to an embodiment of the present application.
[0030] Icon:
[0031] 100 - self-cleaning gas float device for sewage treatment;
[0032] 110 - tank body; 111 - slag scraping area; 112 - slag storage area; 113 - partition plate; 114 - reaction area; 115 - gas float contact area; 116 - clean water area; 117 - mounting plate;
[0033] 120 - slag scraping unit; 121 - transmission wheel; 122 - transmission member; 123 - scraper;
[0034] 130 - self-cleaning unit; 131 - cleaning plate; 1311 - first sliding shaft; 1312 - second sliding shaft; 1313 - counterweight; 1314 - buffer; 132 - movable table; 1321 - first sliding groove; 1322 - second sliding groove. DETAILED DESCRIPTION
[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.
[0036] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present application.
[0037] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.
[0038] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the application is used, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.
[0039] In addition, the terms "first", "second", "third" and the like are only used for differentiation in description and cannot be understood as indicating or implying relative importance.
[0040] In addition, the terms "vertical", "parallel" and the like do not mean that the components must be absolutely vertical or parallel, but can be slightly inclined.
[0041] In the description of the present application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0042] The technical solutions of the present application will be exemplarily described below through some embodiments.
[0043] Referring to Figures 1-6 The self-cleaning air flotation device 100 for sewage treatment provided by the embodiments of the present application comprises a pool body 110, a slag scraping unit 120 and a self-cleaning unit 130.
[0044] The pool body 110 comprises adjacent slag scraping area 111 and slag storage area 112, and the slag scraping area 111 and the slag storage area 112 are separated by a partition plate 113. It can be understood that the structure of the pool body 110 can be designed conventionally, for example, a reaction area 114, an air flotation contact area 115, a clean water area 116 and the like can also be configured. The reaction area 114 is located upstream of the air flotation contact area 115, and the upstream of the air flotation contact area 115 is located upstream of the slag scraping area 111; the sewage first enters the reaction area 114 for flocculation reaction; the sewage after flocculation reaction enters the air flotation contact area 115, and the flocculation in the sewage and the micro-bubbles in the air flotation contact area 115 are fused to enter the slag scraping area 111; in the slag scraping area 111, the suspended matter attached with a large number of micro-bubbles rises to the liquid surface to form floating slag. The clean water area 116 is located downstream of the slag scraping area 111, and the slag scraping area 111 and the clean water area 116 are connected, for example, by a pipeline.
[0045] The two sides of the pool body 110 are provided with mounting plates 117 corresponding to the slag scraping area 111 and the slag storage area 112. It can be understood that the mounting plate 117 can be an integral whole corresponding to the slag scraping area 111 and the slag storage area 112 at the same time; or different mounting plates 117 can be respectively arranged to correspond to the slag scraping area 111 and the slag storage area 112 one by one.
[0046] The slag scraping unit 120 includes a transmission wheel 121, a conveying member 122 and a scraper 123. The transmission wheel 121 is rotatably connected to the mounting plate 117, the conveying member 122 is located above the slag scraping area 111 and is in driving connection with the transmission wheel 121, and the two ends of the scraper 123 in the length direction are connected with the conveying member 122. Among them, the conveying member 122 is in the form of a conveying chain, a conveying belt or the like, and is exemplarily and conventionally provided in a runway shape.
[0047] When the scraper 123 moves below the conveying member 122, the end of the scraper 123 enters the surface of the slag scraping area 111, and the scraper 123 moves towards the direction close to the slag storage area 112, so as to scrape the floating slag on the surface of the slag scraping area 111 into the slag storage area 112. After the scraper 123 completes the slag scraping, the scraper 123 moves upwards following the movement of the conveying member 122, until it moves above the conveying member 122. Among them, taking the process of the scraper 123 moving upwards after completing the slag scraping as a reference, at this time the upper surface of the scraper 123 is the surface facing the floating slag when the slag is scraped, and the floating slag mainly remains on the surface after the scraper 123 completes the slag scraping.
[0048] The self-cleaning unit 130 includes a cleaning plate 131 and a movable table 132. The cleaning plate 131 is used for cleaning the scraper 123, and the two ends of the cleaning plate 131 in the length direction correspond to the two ends of the scraper 123 in the length direction. The cleaning plate 131 is obliquely arranged above the slag storage area 112 along a predetermined oblique direction, and the bottom end of the cleaning plate 131 in the height direction is located on the side close to the slag scraping area 111 of the top end, see Figure 2 After the scraper 123 completes the slag scraping, the bottom end of the cleaning plate 131 is in contact with the upper surface of the scraper 123.
[0049] The two end faces of the cleaning plate 131 in the length direction are each provided with a first sliding shaft 1311 and a second sliding shaft 1312, and the first sliding shaft 1311 and the second sliding shaft 1312 are spaced apart at a predetermined interval along the predetermined oblique direction. The movable table 132 is located above the slag storage area 112 and is connected with the mounting plate 117, and the movable table 132 is provided with a first sliding groove 1321 and a second sliding groove 1322. The first sliding groove 1321 and the second sliding groove 1322 are spaced apart at a predetermined interval along the predetermined oblique direction, the first sliding shaft 1311 is slidably matched with the first sliding groove 1321, and the second sliding shaft 1312 is slidably matched with the second sliding groove 1322.
[0050] It should be noted that the first sliding groove 1321 and the second sliding groove 1322 are spaced apart by a preset distance, which refers to the distance between the same positions of the two, for example, the distance between the bottom of the first sliding groove 1321 and the bottom of the second sliding groove 1322 is the preset interval distance, and the distance between the top of the first sliding groove 1321 and the top of the second sliding groove 1322 is the preset interval distance, in other words, the second sliding groove 1322 can be obtained by translating the first sliding groove 1321 in the preset inclined direction by the preset interval distance.
[0051] In the above design, the cleaning plate 131 is slidably connected to the first sliding groove 1321 and the second sliding groove 1322 through the first sliding shaft 1311 and the second sliding shaft 1312, respectively, so that the cleaning plate 131 can maintain the same angle when sliding relative to the first sliding groove 1321 and the second sliding groove 1322, and has better motion stability.
[0052] The positions of the first sliding groove 1321 and the second sliding groove 1322 gradually increase in the direction away from the slag scraping area 111, and during the upward movement of the scraper 123 after completing the slag scraping, the bottom end of the cleaning plate 131 slidably connects to the upper surface of the scraper 123 until the bottom end of the cleaning plate 131 is separated from the end of the scraper 123. The included angle between the cleaning plate 131 and the upper surface of the scraper 123 is < 90°, so that the upper surface of the scraper 123 can effectively push the cleaning plate 131 to gradually increase and move away from the slag scraping area 111.
[0053] The self-cleaning air flotation device 100 for sewage treatment provided by the embodiment of the present application has the following working principle:
[0054] Referring to Figure 2 After the scraper 123 completes the slag scraping, the bottom end of the cleaning plate 131 starts to contact the upper surface of the scraper 123. In combination with Figure 2 and Figure 4 , the scraper 123 moves upward following the movement of the conveying member 122, and at this time, the upper surface of the scraper 123 pushes the cleaning plate 131 upward, and because the cleaning plate 131 is slidably connected to the first sliding groove 1321 and the second sliding groove 1322 through the first sliding shaft 1311 and the second sliding shaft 1312, respectively, and the positions of the first sliding groove 1321 and the second sliding groove 1322 gradually increase in the direction away from the slag scraping area 111, therefore, the cleaning plate 131 will also move in the direction away from the slag scraping area 111 during the upward pushing process, so that the bottom end of the cleaning plate 131 slides on the upper surface of the scraper 123 towards the end of the scraper 123; during this process, the bottom end of the cleaning plate 131 scrapes the residual floating slag on the upper surface of the scraper 123 to the end of the scraper 123; until the bottom end of the cleaning plate 131 slides to the end of the scraper 123, at this time, the bottom end of the cleaning plate 131 scrapes the residual floating slag on the upper surface of the scraper 123 from the end of the scraper 123. In combination with Figure 4 and Figure 6When the bottom end of the cleaning plate 131 slides to the end of the scraper 123, as the scraper 123 moves further upward, the cleaning plate 131 detaches from the end of the scraper 123; thereafter, the cleaning plate 131 loses the support of the scraper 123 and falls back to its original position under the influence of gravity. Figure 2 The original location is shown (not shown in the figure).
[0055] Based on the above working principle, the self-cleaning air flotation device 100 for sewage treatment provided in this application embodiment has the following beneficial effects:
[0056] During the upward movement of the scraper 123 after scraping the slag, the bottom end of the cleaning plate 131 is slidably engaged with the upper surface of the scraper 123 until it detaches from the end of the scraper 123. During this process, the cleaning plate 131 scrapes off and cleans the floating slag remaining on the surface of the scraper 123, reducing the floating slag residue on the surface of the scraper 123 and helping to reduce the impact of the floating slag residue on the surface of the scraper 123.
[0057] Since the cleaning plate 131 is set above the slag storage area 112 and works in conjunction with the scraper 123, on the one hand, the slag on the surface of the scraper 123 is cleaned during the upward movement of the scraper 123 after scraping the slag. The timely cleaning can better prevent the slag from dripping onto other structures or hardening. On the other hand, the slag scraped off the surface of the scraper 123 will fall directly into the slag storage area 112, without the need for a separate structure to contain the scraped slag.
[0058] Meanwhile, since the cleaning plate 131 is slidably engaged with the chute via a sliding shaft, and the chute gradually rises in the direction away from the scraping area 111, on the one hand, during the upward movement of the scraper 123 after scraping the slag, the upper surface of the scraper 123 can push the cleaning plate 131 to gradually rise along the chute and move away from the scraping area 111, thereby realizing that the bottom end of the cleaning plate 131 moves towards the end of the scraper 123 on the upper surface of the scraper 123. It can be seen that the movement of the cleaning plate 131 to clean the surface of the scraper 123 does not require separate power configuration; on the other hand, after cleaning is completed, the bottom end of the cleaning plate 131 detaches from the end of the scraper 123. At this time, the cleaning plate 131 gradually lowers and approaches the scraping area 111 under the action of gravity. It can be seen that there is also no need to configure separate power configuration to return the cleaning plate 131 to its original position.
[0059] See Figure 2 The top of the separator plate 113 has an inclined section that slopes towards the slag storage area 112. When the end of the scraper 123 moves to the top of the inclined section, the bottom end of the cleaning plate 131 begins to contact the upper surface of the scraper 123. That is, when the end of the scraper 123 has just moved to the position where the scraping is completed, the bottom end of the cleaning plate 131 begins to contact the upper surface of the scraper 123, which can start scraping and cleaning the floating slag remaining on the surface of the scraper 123 earlier.
[0060] It can be understood that in other embodiments, the bottom end of the cleaning plate 131 can also start to contact the upper surface of the scraper 123 when the end of the scraper 123 moves to the slag scraping completion position and then rises for a distance.
[0061] In some embodiments, when the bottom end of the cleaning plate 131 starts to contact the upper surface of the scraper 123, the bottom end of the cleaning plate 131 is located on the side of the center line of the scraper 123 close to the conveying member 122, that is, the bottom end of the cleaning plate 131 is located on the side of the scraper 123 close to the conveying member 122, and the cleaning range of the cleaning plate 131 on the scraper 123 is wider, so that the residual slag on the surface of the scraper 123 can be more thoroughly scraped off.
[0062] Referring to Figure 4 When the scraper 123 moves upward to the horizontal state, the bottom end of the cleaning plate 131 moves to the end of the scraper 123. In this state, compared with the bottom end of the cleaning plate 131 moving to the end of the scraper 123 when the scraper 123 is downwardly inclined, the cleaning plate 131 has a longer cleaning time on the surface of the scraper 123 and a slower sliding speed on the surface of the scraper 123, which is beneficial to more thoroughly scraping off the residual slag on the surface of the scraper 123; compared with the bottom end of the cleaning plate 131 moving to the end of the scraper 123 when the scraper 123 is upwardly inclined, the end of the scraper 123 is not higher than the main body of the scraper 123, which facilitates the cleaning plate 131 to more thoroughly scrape off the residual slag on the upper surface of the scraper 123 from the end of the scraper 123.
[0063] For example, the angle between the preset inclined direction and the horizontal direction is 30°-60°, and optionally, the angle between the preset inclined direction and the horizontal direction is 45°. In this design, the cleaning plate 131 can slide on the upper surface of the scraper 123 at a suitable inclined angle, which is beneficial to more thoroughly scraping off the residual slag on the surface of the scraper 123.
[0064] Referring to Figure 7 In some embodiments, the first sliding shaft 1311 is aligned with the top end of the cleaning plate 131.
[0065] Optionally, in the preset inclined direction, the height of the cleaning plate 131 is L, and the preset interval distance is less than 0.5L; for example, the preset interval distance is, for example but not limited to, 0.1L, 0.2L, 0.3L or 0.4L.
[0066] In some embodiments, the lower surface of the cleaning plate 131 is provided with a counterweight 1313 located below the first sliding shaft 1311 and the second sliding shaft 1312. By providing the counterweight 1313 on the lower surface of the cleaning plate 131, after the cleaning plate 131 is separated from the end of the scraper 123 and loses the support of the scraper 123, the cleaning plate 131 can more quickly and smoothly fall back to the position shown in FIG. 1 under the action of gravity.Figure 2 The in-situ
[0067] In some embodiments, the bottom end of the cleaning plate 131 is provided with a buffer 1314, and the contact between the cleaning plate 131 and the squeegee 123 can be buffered and protected by the buffer 1314.
[0068] For example, the buffer 1314 includes a roller brush, which is rotatably connected to the bottom end of the cleaning plate 131, and the upper surface of the squeegee 123 can be better cleaned by the roller brush.
[0069] It can be understood that in the embodiments of the present application, the design form of the buffer 1314 is not limited, for example, in other designs, the buffer 1314 is provided as an elastic buffer layer connected to the bottom end of the cleaning plate 131.
[0070] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A self-cleaning air flotation device for wastewater treatment, characterized in that, The application relates to a slag scraping device for a slag pool. The slag scraping device comprises a pool body, a slag scraping unit and a self-cleaning unit. The pool body comprises adjacent slag scraping areas and slag storage areas which are separated by a partition plate. The two sides of the top of the pool body are provided with mounting plates corresponding to the slag scraping areas and the slag storage areas.
2. The self-cleaning gas float device for sewage treatment according to claim 1, wherein The slag scraping unit comprises a transmission wheel, a transmission member and a scraper.
3. The self-cleaning gas float device for sewage treatment according to claim 1 or 2, characterized by, The transmission wheel is rotatably connected to the mounting plate.
4. The self-cleaning gas float device for sewage treatment according to claim 1, wherein The transmission member is located above the slag scraping area and is in transmission connection with the transmission wheel.
5. The self-cleaning gas float device for sewage treatment according to claim 1 or 4, characterized by, The two ends of the scraper in the length direction are connected with the transmission member.
6. The self-cleaning gas float device for sewage treatment according to claim 1, wherein The self-cleaning unit comprises a cleaning plate and a movable table.
7. The self-cleaning gas floatation device for sewage treatment according to claim 1 or 6, characterized in that, The cleaning plate is arranged above the slag storage area in a preset inclined direction.
8. The self-cleaning gas float device for sewage treatment according to claim 1, wherein The bottom end of the cleaning plate in the height direction is located on the side close to the top end of the slag scraping area.
9. The self-cleaning gas float device for sewage treatment according to claim 1, wherein After the scraper finishes scraping slag, the bottom end of the cleaning plate is in contact with the upper surface of the scraper.
10. The self-cleaning gas float device for sewage treatment according to claim 9, wherein The two end faces of the cleaning plate in the length direction are provided with first sliding shafts and second sliding shafts. The first sliding shafts and the second sliding shafts are spaced apart at a preset interval distance along the preset inclined direction. The movable table is located above the slag storage area and is connected with the mounting plate. The movable table is provided with first sliding grooves and second sliding grooves. The first sliding grooves and the second sliding grooves are spaced apart at the preset interval distance along the preset inclined direction. The first sliding shafts are slidably matched with the first sliding grooves. The second sliding shafts are slidably matched with the second sliding grooves. In the direction away from the slag scraping area, the positions of the first sliding grooves and the second sliding grooves gradually rise. During the upward movement of the cleaning plate after the scraper finishes scraping slag, the included angle between the cleaning plate and the upper surface of the scraper is less than 90 degrees. The bottom end of the cleaning plate is slidably matched with the upper surface of the scraper until the bottom end is separated from the end of the scraper. The top of the partition plate has an inclined section which is inclined towards the slag storage area. When the end of the scraper moves to the top end of the inclined section, the bottom end of the cleaning plate starts to contact the upper surface of the scraper. When the bottom end of the cleaning plate starts to contact the upper surface of the scraper, the bottom end of the cleaning plate is located on the side close to the transmission member of the middle line of the scraper. When the scraper moves upward to the horizontal state, the bottom end of the cleaning plate moves to the end of the scraper. The included angle between the preset inclined direction and the horizontal direction is 30-60 degrees. The first sliding shafts are aligned with the top end of the cleaning plate. In the preset inclined direction, the height of the cleaning plate is L, and the preset interval distance is less than 0.5L. The lower surface of the cleaning plate is provided with a counterweight. The bottom end of the cleaning plate is provided with a buffer. The buffer comprises a roller brush which is rotatably connected to the bottom end of the cleaning plate.