An intelligent shallow air flotation treatment device for sewage

Abstract

The present invention relates to the technical field of sewage treatment, and specifically relates to an intelligent shallow - layer air - flotation sewage treatment device, which includes a main body of a shallow - layer air - flotation machine, and also includes a scum collection component, a synchronous drive component, and a gravity slag removal component. The scum collection component includes a slag discharge pipe and a slag removal hopper, and the scum is collected by the rotation of the slag discharge pipe and the slag removal hopper. The synchronous drive component is used to drive the two slag discharge pipes to rotate in opposite directions to synchronously collect the scum and is used to reduce the interference of unilateral water flow. The gravity slag removal component includes a magnetic suction pipe and a guiding and moving connecting piece, and the magnetic suction pipe can move along the inner wall of the slag removal hopper under the action of gravity through the guiding and moving connecting piece to scrape off the adhered scum. In the present invention, the two scum collection components rotating in opposite directions can collect the scum simultaneously from both sides of the water distribution machine component. Compared with a single collection structure, it can cover a larger pool surface area, can timely collect the scum generated during the air - flotation process, and prevent the scum from accumulating too much on the water surface.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and particularly to an intelligent shallow - layer air - flotation sewage treatment device. Background Art

[0002] The shallow - layer air - flotation machine device is an efficient water - quality purification equipment that uses small bubbles or micro - bubbles to make impurities in the medium float to the water surface, mainly composed of a pool body, a dissolved - air system, a water - distribution component, a floating - scum removal component, etc.

[0003] For the existing shallow - layer air - flotation devices, the most direct problem is that when the floating - scum removal component removes floating scum, the floating scum adheres to the slag - removal hopper. After a long time, the resistance increases, affecting the discharge effect of the floating scum. Currently, the conventional methods mainly include: flushing with water: For example, in the existing patent CN118108290B, a shallow - layer air - flotation machine for industrial wastewater treatment and its treatment method are disclosed, in which a flushing component is set to prevent the floating scum from adhering to the inner wall of the slag - scraping hopper and ensure the stable discharge of the floating scum. However, in actual use, it is not considered that the water falling after flushing may break the originally stable water flow state and micro - bubble distribution in the air - flotation pool. During the air - flotation process, the micro - bubbles need to be evenly distributed and fully contact with the suspended solids to achieve a good air - flotation effect. The falling of the flushing water may cause the micro - bubbles to aggregate or disperse unevenly, with too high or too low micro - bubble concentration in some areas, affecting the attachment and floating speed of the suspended solids and reducing the air - flotation efficiency; the falling of the flushing water may impact the floating - scum layer, making the floating - scum layer unstable, and some floating scum may re - mix into the water, increasing the difficulty of air - flotation separation and may also lead to incomplete slag scraping, affecting the overall treatment effect of the air - flotation pool; another way is to stop the machine regularly for manual cleaning, which is not only troublesome but also greatly reduces the sewage treatment efficiency. Therefore, we propose an intelligent shallow - layer air - flotation sewage treatment device. Summary of the Invention

[0004] To solve the above - mentioned technical problems, an embodiment of the present application provides an intelligent shallow - layer air - flotation sewage treatment device, including a shallow - layer air - flotation machine main body. A walking frame is installed on the shallow - layer air - flotation machine main body, and a water - distribution component is arranged on the walking frame. The device further includes:

[0005] Two floating - scum collection components, the two floating - scum collection components are relatively arranged on both sides of the water - distribution component. The floating - scum collection component includes a connected slag - discharge pipe and a slag - removal hopper, and the floating scum is collected by the rotation of the slag - discharge pipe and the slag - removal hopper;

[0006] A synchronous drive component, the synchronous drive component is used to drive the two slag - discharge pipes to rotate in opposite directions to synchronously collect floating scum and is used to reduce the interference of unilateral water flow;

[0007] The gravity slag removal component is arranged on the slag removal bucket, and the gravity slag removal component includes a magnetic suction tube and a guide connection piece. The magnetic suction tube is hollow inside, and the magnetic suction tube can be adsorbed on the inner end of the slag removal bucket by magnetic attraction. The magnetic suction tube can move along the inner wall of the slag removal bucket under the action of gravity through the guide connection piece to scrape off the adhered slag.

[0008] In some embodiments, the outer wall of the magnetic suction tube is provided with a plurality of water inlet holes connected to the interior in a circular array along the length direction, a scraping edge is provided at the end of the water inlet hole, and a filter screen is provided inside the water inlet hole to prevent scum from entering.

[0009] In some embodiments, a plurality of magnetic blocks are embedded in the inner wall of the slag removal bucket near the end along the length direction, and the magnetic attraction force of the magnetic blocks on the magnetic suction tube is smaller than the gravity of the magnetic suction tube.

[0010] In some embodiments, the guide connection member includes a guide groove opened on the side wall of the slag removal bucket, a guide block is slidably connected in the guide groove, a connecting rod is connected between the outer wall of the guide block and the end of the magnetic suction tube, and the magnetic suction tube is rotatably connected to the connecting rod.

[0011] In some embodiments, the synchronous drive assembly includes a first drive part and a second drive part, the first drive part is used to drive one slag discharge pipe to rotate, and the second drive part operates synchronously with the first drive part and is used to drive another slag discharge pipe to rotate in the opposite direction.

[0012] In some embodiments, the first driving part includes a motor installed on a water distribution frame, and the motor and an end of one of the slag discharge pipes are both installed with a first pulley, and the two first pulleys are connected by a belt.

[0013] In some embodiments, the second driving part includes a second pulley and a third pulley rotatably mounted on the walking frame, the second pulley and the end of the slag discharge pipe are also connected by a belt, a gear is installed at the end of the second pulley and the third pulley, and the two gears are meshed, and a fourth pulley is installed at the other end of the slag discharge pipe, and the third pulley and the fourth pulley are connected by a belt transmission.

[0014] In some embodiments, a slag dropping channel is provided at the inner end of the connection between the slag removal bucket and the slag discharge pipe, a guide pipe is provided at the slag discharge end of the slag discharge pipe, and the slag discharge pipe is rotatably connected to the guide pipe.

[0015] In some embodiments, an inner wall of the slag removal bucket is provided with an arc-shaped shallow groove near the end and along the length direction, and the magnetic block is located in the arc-shaped shallow groove. When the magnetic suction tube is in the arc-shaped shallow groove, the magnetic suction tube protrudes outward from the inner wall of the slag removal bucket.

[0016] In some embodiments, a plurality of rolling balls are disposed at the inner bottom of the guide groove along the guide direction, and an end of the guide block contacts the balls.

[0017] The present invention has at least the following beneficial effects:

[0018] 1. Improve the scum collection efficiency: Two scum collection components with opposite rotation can collect scum from both sides of the water distributor component at the same time. Compared with a single collection structure, it can cover a larger pool surface area and collect the scum generated during the flotation process in time to prevent excessive accumulation of scum on the water surface, which affects the flotation effect and water quality. The opposite rotation directions enable the collection structures to cooperate with each other during movement to encircle the scum around the water distributor component, reduce the situation where scum accumulates in certain areas and cannot be collected in time, and keep the surface of the flotation pool clean.

[0019] 2. Reduce water flow interference: The two scum collection components rotate in opposite directions, and the water flows generated by their movement offset each other partially. Compared with the water flow disturbance caused by the unidirectional rotation of a single collection structure, the overall interference to the water flow in the flotation tank is smaller, which is conducive to the stable combination and floating of flocculants and bubbles in the water, improving the effect of flotation separation and making the solid-liquid separation more thorough.

[0020] 3. Optimize water flow pattern: The two scum collection components rotating in opposite directions can form a specific water flow pattern on both sides of the water distribution mechanism, which helps to guide the scum in the water flow to move toward the collection structure, while allowing the clean water to flow downward better, achieving effective separation of scum and clean water, and improving the water purification effect. The opposite forces can form a special water flow traction mode, so that the scum on the water surface is quickly gathered to the area between the two scum collection structures. Compared with the force in a single direction, this method can more effectively concentrate the scum scattered on both sides of the water distribution mechanism, which is convenient for subsequent collection and cleaning, and improves the efficiency and integrity of scum collection.

[0021] 4. Balanced mechanical stress: When the two slag collection components with opposite rotations are in operation, the torque and force generated are balanced with each other, which can reduce the mechanical stress of the water distribution mechanism and the entire flotation equipment, reduce the wear and deformation of the equipment caused by uneven force, extend the service life of the equipment, and ensure the stability of equipment operation.

[0022] 5. Simplified structure: The synchronous drive assembly can realize the synchronous drive of the two slag discharge pipes, making them rotate in opposite directions. This design not only effectively reduces the number of driving components and significantly improves the degree of synchronization, but also greatly saves maintenance workload and reduces manufacturing costs.

[0023] 6. Automatic slag removal, highly efficient and time-saving: By rotating the walking frame around a fixed center, synchronously driving the slag discharge pipe and the slag removal hopper to rotate in the opposite direction with the help of a synchronous drive component, and through the interaction of gravity, magnetism and friction of the magnetic suction pipe, the floating slag collection and scraping are automatically completed without excessive manual intervention, saving labor costs; This automatic cycle working method can quickly complete the scraping of the floating slag in the slag removal hopper in each cycle, improving the slag removal efficiency, saving the time for treating sewage, and enhancing the working efficiency of the entire flotation equipment.

[0024] 7. Further slag removal by gravity: A small amount of water that enters the magnetic suction pipe when the slag removal hopper holds the floating slag flows out during the movement of the magnetic suction pipe, flushing the inner wall of the slag removal hopper, further enhancing the effect of removing the adhering floating slag, helping to keep the inner wall of the slag removal hopper clean, maintaining the good working state of the equipment, and reducing the manual cleaning workload. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is the overall structural schematic diagram of the present invention;

[0026] Figure 2 is the overall structural schematic diagram of the present invention from another perspective;

[0027] Figure 3 is the structural schematic diagram of the present invention in the combined state of the walking frame, water distribution component, floating slag collection component and synchronous drive component;

[0028] Figure 4 is the structural schematic diagram of the present invention in the combined state of the water distribution component, floating slag collection component and synchronous drive component;

[0029] Figure 5 is the structural schematic diagram of the present invention in the combined state of the floating slag collection component and the synchronous drive component;

[0030] Figure 6 is the structural schematic diagram of the floating slag collection component of the present invention;

[0031] Figure 7 is the structural schematic diagram of the floating slag collection component and the gravity slag removal component of the present invention;

[0032] Figure 8 is the sectional structural schematic diagram of the floating slag collection component of the present invention;

[0033] Figure 9 is the sectional structural schematic diagram of the slag removal hopper of the present invention;

[0034] Figure 10 is the structural schematic diagram of the gravity slag removal component of the present invention;

[0035] Figure 11 is the structural schematic diagram of the magnetic suction pipe and the guiding and moving connecting piece of the present invention.

[0036] In the figure: 1 - main body of the shallow - layer air - flotation machine; 2 - traveling frame; 3 - water - distributing assembly;

[0037] 4 - scum - collecting assembly; 41 - slag - discharging pipe; 411 - slag - falling channel; 42 - slag - removing hopper; 43 - guiding pipe;

[0038] 5 - synchronous driving assembly; 51 - first driving part; 511 - motor; 512 - first pulley; 52 - second driving part; 521 - second pulley; 522 - gear; 523 - third pulley; 524 - fourth pulley;

[0039] 6 - gravity slag - removing assembly; 61 - magnetic suction pipe; 611 - water - inlet hole; 612 - slag - scraping edge; 613 - filter screen; 62 - guiding and moving connecting piece; 621 - guiding and moving block; 622 - connecting rod; 623 - guiding and moving groove; 63 - magnetic block. Specific implementation mode

[0040] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0041] Embodiment 1: Please refer to Figures 1-11As shown in the figure, the present invention provides a technical solution: an intelligent shallow - layer air - flotation sewage treatment device, which includes a main body 1 of a shallow - layer air - flotation machine. A walking frame 2 is installed on the main body 1 of the shallow - layer air - flotation machine. A water - distribution component 3 is arranged on the walking frame 2. The walking frame 2 rotates around the center of the main body 1 of the shallow - layer air - flotation machine to achieve continuous water distribution, air dissolution, and slag removal. The water inlet end of the water - distribution component 3 is connected to the raw - water inlet pipe through a rotary connector. The bottom end of the raw - water inlet pipe passes through the bottom end of the main body 1 of the shallow - layer air - flotation machine. An electromagnetic valve is installed on the raw - water inlet pipe. A turbidity sensor and a pH sensor are also installed in the main body 1 of the shallow - layer air - flotation machine for real - time water quality monitoring. It also includes a controller (PLC) to achieve automatic operation and monitoring. In addition, the intelligent shallow - layer air - flotation sewage treatment device further includes a floating - slag collection component 4 and a synchronous driving component 5. There are two floating - slag collection components 4, and the two floating - slag collection components 4 are relatively arranged on both sides of the water - distribution component 3 to collect floating slag synchronously from both sides. Among them, the floating - slag collection component 4 includes a connected slag - discharge pipe 41 and a slag - removal hopper 42. The floating slag is collected by the rotation of the slag - discharge pipe 41 and the slag - removal hopper 42. The synchronous driving component 5 is used to drive the two slag - discharge pipes 41 to rotate in opposite directions to synchronously collect floating slag and to reduce the interference of unilateral water flow. The two floating - slag collection components 4 with opposite rotations can collect floating slag simultaneously from both sides of the water - distribution component 3. Compared with a single collection structure, it can cover a larger pool surface area, can timely collect the floating slag generated during the air - flotation process, prevent excessive accumulation of floating slag on the water surface, which affects the air - flotation effect and water quality. Secondly, the opposite rotation directions enable the collection structures to cooperate with each other during movement, forming a surrounding trend for the floating slag around the water - distribution component 3, reducing the situation where floating slag accumulates in certain areas and cannot be collected in time, and keeping the surface of the air - flotation pool clean. In addition, the two opposite forces restrict each other, forming a relatively stable water - flow boundary on the surface of the air - flotation pool, reducing the possibility that floating slag escapes from beside or around the collection structure due to water - flow fluctuations, ensuring that more floating slag can be smoothly collected and improving the floating - slag removal effect. An inner end of the connection between the slag - removal hopper 42 and the slag - discharge pipe 41 is provided with a slag - falling channel 411. The slag - discharge end of the slag - discharge pipe 41 is provided with a conveying pipe 43, and the slag - discharge pipe 41 is rotatably connected to the conveying pipe 43. The slag - removal hopper 42 holds up the floating slag as the slag - discharge pipe 41 rotates. As it rotates upward, under the action of gravity, the floating slag enters the slag - discharge pipe 41 through the slag - falling channel 411. One end of the slag - discharge pipe 41 close to the conveying pipe 43 is lower, and the floating slag in the slag - discharge pipe 41 can move along the slag - discharge pipe 41 to the conveying pipe 43 and then enter the floating - slag collection area and be discharged.

[0042] Among them, referring to Figures 4-6 As shown in the figure, the synchronous driving component 5 includes a first driving part 51 and a second driving part 52. The first driving part 51 is used to drive one slag - discharge pipe 41 to rotate, and the second driving part 52 operates synchronously with the first driving part 51 and is used to drive the other slag - discharge pipe 41 to rotate in the opposite direction.

[0043] Referring toFigure 5 As shown in the figure, the first driving part 51 includes a motor 511 installed on the water distribution frame. The motor 511 is preferably a servo motor. A first pulley 512 is installed at the end of both the motor 511 and one of the slag discharge pipes 41. The two first pulleys 512 are connected by a belt. When the motor 511 is started, the first pulley 512 at the output end of the motor 511 rotates, and then the slag discharge pipe 41 connected to the first pulley 512 is driven to rotate to collect floating slag.

[0044] Refer to Figures 4-5 As shown in the figure, the second driving part 52 includes a second pulley 521 and a third pulley 523 rotatably installed on the traveling frame 2. A belt is also drivingly connected between the second pulley 521 and the end of the slag discharge pipe 41. A gear 522 is installed at the end of both the second pulley 521 and the third pulley 523. The two gears 522 are meshed with each other. A fourth pulley 524 is installed at the end of the other slag discharge pipe 41. The third pulley 523 and the fourth pulley 524 are drivingly connected by a belt. Driven by the motor 511, its output shaft drives the first pulley 512 to rotate. The power is transmitted to the second pulley 521 through the belt transmission mechanism. The second pulley 521 meshes with another gear 522 through the gear 522 coaxially installed with it to realize power steering, and then drives the third pulley 523 to rotate in the reverse direction to realize the reverse rotation of the other slag discharge pipe 41 to collect floating slag.

[0045] Refer to Figures 1-2 As shown in the figure, the intelligent shallow - layer air - flotation sewage treatment device further includes a gravity slag removal component 6. The gravity slag removal component 6 is arranged on the slag removal hopper 42, and the gravity slag removal component 6 includes a magnetic suction pipe 61 and a guiding and moving connecting piece 62. The inside of the magnetic suction pipe 61 is hollow, and the magnetic suction pipe 61 can be adsorbed on the inner end of the slag removal hopper 42 by magnetic attraction. And the magnetic suction pipe 61 can move along the inner wall of the slag removal hopper 42 under the action of gravity through the guiding and moving connecting piece 62 to scrape the floating slag adhered to the inner wall of the slag removal hopper 42.

[0046] Refer to Figures 8-9 As shown in the figure, several magnetic blocks 63 are embedded along the length direction near the end of the inner wall of the slag removal hopper 42. The magnetic attraction force of the magnetic blocks 63 on the magnetic suction pipe 61 is less than the gravity of the magnetic suction pipe 61. An arc - shaped shallow groove is opened along the length direction near the end of the inner wall of the slag removal hopper 42. The magnetic blocks 63 are located in the arc - shaped shallow groove. The magnetic blocks 63 are arc - shaped structures adapted to the magnetic suction pipe 61. When the magnetic suction pipe 61 is in the arc - shaped shallow groove, the magnetic suction pipe 61 protrudes outward from the inner wall of the slag removal hopper 42, so as to play a certain blocking role after initially scooping up the floating slag onto the slag removal hopper 42 and reduce the occurrence of the floating slag sliding out along the end of the slag removal hopper 42.

[0047] Refer to Figure 11As shown, the outer wall of the magnetic suction tube 61 is provided with a plurality of water inlet holes 611 connected to the interior in a circular array along the length direction, a scraping edge 612 is provided at the end of the water inlet hole 611, and a filter screen 613 is provided inside the water inlet hole 611 to block the entry of scum. When the scum is scooped up by the scum bucket 42, the upper water can enter the magnetic suction tube 61 through the scum bucket 42, and when the magnetic suction tube 61 subsequently moves along the inner wall of the scum bucket 42 under the action of gravity, the water inside the magnetic suction tube 61 can also flow out under the action of gravity to flush the inner wall of the scum bucket 42.

[0048] See also Figures 7-11 As shown, the guide connection member 62 includes a guide groove 623 opened on the side wall of the slag removal bucket 42, a guide block 621 is slidably connected in the guide groove 623, a connecting rod 622 is connected between the outer wall of the guide block 621 and the end of the magnetic suction tube 61, and the magnetic suction tube 61 is rotatably connected to the connecting rod 622.

[0049] Through the above, in specific use, the sewage to be treated is introduced into the flotation equipment. As the walking frame 2 rotates around the fixed center of the circle, the synchronous drive component 5 takes effect, and synchronously drives the two slag discharge pipes 41 and the slag removal bucket 42 to rotate in the opposite direction, so as to collect the floating slag. When the slag removal bucket 42 is at the bottom position, the magnetic suction tube 61 is adsorbed on the inner wall of the slag removal bucket 42 near the end by the magnetic block 63. As the magnetic suction tube 61 rotates upward, once the downward gravity of the magnetic suction tube 61 itself is greater than the sum of the suction force of the magnetic block 63 and the friction force (that is, the resistance The magnetic suction tube 61 will be separated from the magnetic block 63. In the process of continuing to rotate upward, the magnetic suction tube 61 moves along the guide groove 623 by relying on the guide block 621, so that it always sticks to the inner wall of the slag bucket 42. In this process, the scraper edge 612 will scrape the scum adhering to the inner wall of the slag bucket 42 to the slag channel 411. When the slag bucket 42 originally at the lower end rotates through the highest point, under the action of gravity, the magnetic suction tube 61 that has moved close to the slag channel 411 will move in the opposite direction against the inner wall of the slag bucket 42. Before the slag bucket 42 rotates to collect scum next time, the magnetic suction tube 61 can be re-adsorbed on the magnetic block 63. Through this continuous cycle of working mode, the scraping of scum on the slag bucket 42 can be automatically completed in each cycle, which is convenient and saves time.

[0050] In addition, each time the slag removal bucket 42 picks up slag, a small amount of water will enter the magnetic suction tube 61. When the magnetic suction tube 61 subsequently moves along the inner wall of the slag removal bucket 42, the water inside the magnetic suction tube 61 flows out under the action of gravity, thereby flushing the inner wall of the slag removal bucket 42, further enhancing the effect of removing adhered slag.

[0051] Embodiment 2: This embodiment is an extension based on Embodiment 1: A plurality of rolling balls are provided along the guiding direction at the inner bottom of the guiding groove 623. The end of the guiding block 621 contacts the balls. These balls are distributed at uniform intervals, and their existence greatly optimizes the smoothness of guiding. The balls are made of a special material with high strength and wear resistance, can withstand large pressures and have a long service life. The end of the guiding block 621 precisely contacts the balls. When the guiding block 621 conducts a guiding movement in the guiding groove 623, rolling friction is formed between the end and the balls. Compared with traditional sliding friction, the frictional force is greatly reduced, making the guiding process easier and more efficient. At the same time, the wear between components is also reduced, effectively improving the stability and reliability of the entire guiding system.

[0052] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0053] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention.

Claims

1. An intelligent shallow - layer air - flotation sewage treatment device, comprising a main body of a shallow - layer air - flotation machine (1), a traveling frame (2) is installed on the main body of the shallow - layer air - flotation machine (1), and a water - distribution assembly (3) is arranged on the traveling frame (2), characterized in that, It also comprises: two scum collecting assemblies (4), the two scum collecting assemblies (4) being arranged on opposite sides of the water distribution assembly (3), the scum collecting assemblies (4) comprising a scum discharge pipe (41) and a scum removal bucket (42) connected to each other, and scum is collected by rotating the scum discharge pipe (41) and the scum removal bucket (42); A synchronous drive assembly (5), the synchronous drive assembly (5) being used to drive the two slag discharge pipes (41) to rotate in opposite directions to synchronously collect slag and to reduce unilateral water flow interference; A gravity slag removal component (6) is arranged on the slag removal bucket (42), and the gravity slag removal component (6) comprises a magnetic suction tube (61) and a guide connection piece (62), the magnetic suction tube (61) is hollow inside, and the magnetic suction tube (61) can be adsorbed on the inner end of the slag removal bucket (42) by magnetic attraction, and the magnetic suction tube (61) can move in contact with the inner wall of the slag removal bucket (42) under the action of gravity through the guide connection piece (62) to scrape off the adhering slag; The outer wall of the magnetic suction tube (61) is provided with a plurality of water inlet holes (611) in a circular array along the length direction and connected to the interior, the ends of the water inlet holes (611) are provided with scraping edges (612), and the interior of the water inlet holes (611) is provided with a filter screen (613) for preventing floating scum from entering; A plurality of magnetic blocks (63) are embedded in the inner wall of the slag removal bucket (42) near the end along the length direction, and the magnetic attraction force of the magnetic blocks (63) on the magnetic suction tube (61) is smaller than the gravity of the magnetic suction tube (61); The guide connection member (62) comprises a guide groove (623) formed on a side wall of the slag removal bucket (42), a guide block (621) being slidably connected in the guide groove (623), a connecting rod (622) being connected between an outer wall of the guide block (621) and an end of the magnetic suction tube (61), and the magnetic suction tube (61) being rotatably connected to the connecting rod (622).

2. The intelligent shallow air flotation sewage treatment device according to claim 1, characterized in that: The synchronous drive assembly (5) comprises a first drive part (51) and a second drive part (52), wherein the first drive part (51) is used to drive one slag discharge pipe (41) to rotate, and the second drive part (52) operates synchronously with the first drive part (51) and is used to drive another slag discharge pipe (41) to rotate in the opposite direction.

3. The intelligent shallow air flotation sewage treatment device according to claim 2, wherein: The first driving part (51) comprises a motor (511) mounted on a water distribution frame, and the motor (511) and an end of one of the slag discharge pipes (41) are both mounted with a first belt pulley (512), and the two first belt pulleys (512) are connected via a belt.

4. The intelligent shallow - layer air - flotation sewage treatment device according to claim 3, wherein: The second driving part (52) comprises a second pulley (521) and a third pulley (523) rotatably mounted on the walking frame (2); the second pulley (521) and the end of the slag discharge pipe (41) are also connected by a belt in a transmission manner; a gear (522) is mounted on the end of each of the second pulley (521) and the third pulley (523); the two gears (522) are meshed with each other; a fourth pulley (524) is mounted on the other end of the slag discharge pipe (41); and the third pulley (523) and the fourth pulley (524) are connected by a belt transmission.

5. The intelligent shallow - layer air - flotation sewage treatment device according to claim 1, wherein: An inner end of a connection between the slag removal hopper (42) and the slag discharge pipe (41) is provided with a slag falling channel (411). A slag discharge end of the slag discharge pipe (41) is provided with a guiding pipe (43), and the slag discharge pipe (41) is rotatably connected to the guiding pipe (43).

6. The intelligent shallow - layer air - flotation sewage treatment device according to claim 1, characterized in that: An arc-shaped shallow groove is formed in an inner wall of the slag removal hopper (42) near an end portion along a length direction. The magnetic block (63) is located in the arc-shaped shallow groove. When the magnetic suction pipe (61) is located in the arc-shaped shallow groove, the magnetic suction pipe (61) protrudes outwards from the inner wall of the slag removal hopper (42).

7. The intelligent shallow - layer air - flotation sewage treatment device according to claim 1, characterized in that: A plurality of rolling balls are arranged on an inner bottom of the guiding groove (623) along a guiding direction. An end portion of the guiding block (621) contacts the balls.

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