Intelligent multi-stage sewage treatment system

Abstract

The invention relates to the technical field of sewage treatment, in particular to an intelligent multi-stage sewage treatment system which comprises a supporting module, an aeration module and a gas transmission module. The aeration module comprises a plurality of aeration units which are sequentially connected end to end; each aeration unit comprises an eccentric sleeve, a base and an elastic diaphragm; the eccentric sleeve is coaxially connected with the base in a sliding mode, and the elastic diaphragm is arranged in the eccentric sleeve and can rotate relative to the eccentric sleeve. When the gas transmission module detects that input gas pressure is too large, the gas transmission module can periodically drive the elastic diaphragm to rotate around the axis of the elastic diaphragm, so that the elastic diaphragm and the eccentric sleeve rotate relatively, the contact area of the elastic diaphragm and the eccentric sleeve is continuously changed, and the stress part of the elastic diaphragm is periodically alternated; local concentrated stress is evenly distributed to the contact circumference of the whole elastic diaphragm, damage to the elastic diaphragm caused by long-term fixed-point abrasion is effectively avoided, and the overall service life of the elastic diaphragm is further prolonged.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to an intelligent multi-stage wastewater treatment system. Background Technology

[0002] With the acceleration of industrialization and the improvement of urbanization, the discharge of industrial wastewater and domestic sewage continues to increase, and water pollution problems are becoming increasingly prominent. Wastewater treatment has become a key link in ensuring ecological environment security and realizing water resource recycling. At present, the activated sludge process is one of the most widely used biological treatment technologies, and it is widely used in the treatment of municipal sewage and industrial wastewater. As the "core power source" of biological treatment processes, the aeration system's main function is to deliver oxygen to the sewage, providing sufficient dissolved oxygen for microorganisms to degrade organic pollutants, and also to play a role in stirring and mixing, preventing sludge sedimentation. This directly determines the sewage treatment efficiency and the stability of the effluent water quality.

[0003] Existing diaphragm aeration discs typically consist of a base, a support plate, and an elastic diaphragm (such as a rubber or silicone membrane). The edges of the diaphragm are tightly pressed against the base or support plate by fixing rings, and the diaphragm has numerous micropores. When compressed air is introduced, the diaphragm inflates, and the micropores open for aeration; when the air supply stops, the diaphragm closes under hydrostatic pressure, and the micropores close, effectively preventing sewage backflow.

[0004] However, during aeration, gas pushes the diaphragm from inside the aeration disc, causing it to expand. At this time, the fixed parts at the diaphragm's edge are subjected to continuous tensile deformation. Because these fixed parts cannot expand synchronously with the main diaphragm body, the stress level in this area is higher than in the center of the diaphragm. Over long-term operation, this localized stress accumulates, leading to microscopic cracks in the fixed parts of the diaphragm. As these cracks propagate, they eventually cause the diaphragm to rupture and leak. This not only significantly shortens the diaphragm's lifespan and increases the frequency of equipment maintenance and replacement costs, but also affects the stability and continuity of the wastewater treatment system's operation. Summary of the Invention

[0005] Therefore, it is necessary to provide an intelligent multi-stage wastewater treatment system to address the problem of easy damage to the diaphragm fixing parts during long-term aeration in current equipment.

[0006] The above objectives are achieved through the following technical solutions: An intelligent multi-stage wastewater treatment system includes: a support module, an aeration module, and an air supply module; The support module includes a sewage tank for storing sewage. The gas supply module is used to supply gas to the aeration module; The aeration module includes multiple aeration units connected end to end in sequence. The aeration units are installed in the sewage tank and are used for aeration treatment of sewage. The aeration unit includes an eccentric sleeve, a base, and an elastic diaphragm. The eccentric sleeve is slidably connected to the base coaxially, and the elastic diaphragm is coaxially disposed inside the eccentric sleeve. The eccentric sleeve and the elastic diaphragm are slidably connected coaxially and can rotate relative to each other. A circular through hole is provided on the eccentric sleeve, and the central axis of the circular through hole does not coincide with the central axis of the eccentric sleeve. The elastic diaphragm has multiple first through holes for gas passage. When the gas delivery module delivers gas to the elastic diaphragm, both the eccentric sleeve and the elastic diaphragm can slide along their own axial direction, and the middle part of the elastic diaphragm can expand along its own axial direction to open the first through holes. When the gas delivery module detects that the input gas pressure is too high, the gas delivery module can periodically drive the elastic diaphragm to rotate around its own axis to change the relative contact area between the elastic diaphragm and the eccentric sleeve.

[0007] Furthermore, the support module also includes a guide rail fixed to the bottom of the sewage tank, the guide rails being connected end to end to form a ring structure; the aeration unit also includes a connecting pipe, a first limiting half-ring and a second limiting half-ring, the first limiting half-ring and the second limiting half-ring being coaxially connected to the connecting pipe, and the first limiting half-ring and the second limiting half-ring being detachably connected; the first limiting half-ring, the second limiting half-ring and the connecting pipe are all slidably disposed inside the guide rail, and all slide along the extension direction of the guide rail; a fixing post is fixedly disposed on the first limiting half-ring, and the base is coaxially threadedly connected to the fixing post.

[0008] Furthermore, a limiting block is fixedly installed inside the guide rail, which is used to support the first limiting half-turn, the second limiting half-turn, and the connecting pipe.

[0009] Furthermore, the aeration unit includes a support plate, which is coaxially disposed between the base and the elastic diaphragm. The support plate and the base are capable of relative sliding, and the support plate is coaxially slidably connected to the eccentric sleeve. The elastic diaphragm is coaxially connected to the support plate, and the support plate has multiple second through holes for gas passage. The second through holes are axially offset from the first through holes. When the gas delivery module delivers gas, the support plate can slide along its own axis, causing the elastic diaphragm to slide along its own axis.

[0010] Furthermore, a first mating rod is fixedly provided on the elastic diaphragm, and a plurality of irregular teeth are fixedly provided on the eccentric sleeve. The plurality of irregular teeth are arranged circumferentially around the central axis of the eccentric sleeve. When the elastic diaphragm rotates around its own axis, the first mating rod engages with the irregular teeth, thereby driving the elastic diaphragm to rotate around its own axis.

[0011] Furthermore, a limiting block is fixedly provided on the base, which is used to limit the eccentric sleeve from rotating around its own axis.

[0012] Furthermore, a second mating rod is fixedly provided on the eccentric sleeve, and a support plate is fixedly provided on the guide rail. Multiple gear teeth are fixedly provided on the support plate on the straight section of the guide rail, and the multiple gear teeth are arranged radially along the eccentric sleeve. When the eccentric sleeve slides along its own axial direction, the second mating rod engages with the gear teeth, causing the connecting pipe to slide along the extension direction of the guide rail.

[0013] Furthermore, a scraper is coaxially arranged inside the eccentric sleeve. The scraper can slide along its own axis and is disposed between the elastic diaphragm and the eccentric sleeve. The scraper is used to remove impurities from the surface of the elastic diaphragm.

[0014] Furthermore, a sealing ring is coaxially disposed inside the eccentric sleeve, and the sealing ring can slide along its own axial direction. The sealing ring is disposed between the elastic diaphragm and the eccentric sleeve. The scraper is coaxially slidably connected to the sealing ring, and the scraper is disposed inside the sealing ring. The axial dimension of the sealing ring is larger than the axial dimension of the scraper. The sealing ring is used to prevent sewage from flowing into the space between the elastic diaphragm and the base.

[0015] Furthermore, it also includes a spring, one end of which is fixedly connected to the scraper and the other end of which is fixedly connected to the eccentric sleeve; the spring is used to drive the scraper to reset.

[0016] The beneficial effects of this invention are: This invention provides an intelligent multi-stage wastewater treatment system, comprising a support module, an aeration module, and an air supply module. The aeration module includes multiple aeration units connected sequentially end-to-end. Each aeration unit includes an eccentric sleeve, a base, and an elastic diaphragm. The eccentric sleeve and base are slidably connected coaxially, and the elastic diaphragm is disposed inside the eccentric sleeve and can rotate relative to it. Furthermore, the eccentric sleeve has a circular through-hole, the central axis of which does not coincide with the central axis of the eccentric sleeve; the elastic diaphragm has multiple first through-holes for gas passage. When the air supply module delivers gas to the elastic diaphragm, both the eccentric sleeve and the elastic diaphragm can slide along their own axial direction, and the middle part of the elastic diaphragm can expand along its own axial direction to open the first through-holes for wastewater aeration. When the gas delivery module detects excessive input gas pressure, it periodically drives the elastic diaphragm to rotate around its own axis, causing the elastic diaphragm and the eccentric sleeve to rotate relative to each other. This continuously changes the contact area between the elastic diaphragm and the eccentric sleeve, causing the stress points of the elastic diaphragm to rotate periodically. This distributes the localized concentrated stress evenly across the entire contact circumference of the elastic diaphragm, effectively preventing damage to the elastic diaphragm caused by long-term fixed-point wear, and thus extending the overall service life of the elastic diaphragm. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an intelligent multi-stage wastewater treatment system provided in an embodiment of the present invention; Figure 2 for Figure 1 Top view; Figure 3 for Figure 1 A schematic diagram of the structure of the hidden sewage tank; Figure 4 for Figure 3 A magnified view of a portion of point A in the middle; Figure 5 for Figure 3 The front view; Figure 6 for Figure 5 Cross-sectional view along section AA; Figure 7 for Figure 6 A magnified view of a portion of point B in the middle; Figure 8 for Figure 5 Schematic diagram of the structure of the intermediate aeration unit; Figure 9 for Figure 8 Side view; Figure 10 for Figure 9 A sectional view along section BB; Figure 11 for Figure 10 A magnified view of a portion of point C in the middle; Figure 12 for Figure 10 A magnified view of a portion of point D in the middle; Figure 13 for Figure 8 Exploded view; Figure 14 for Figure 13 A magnified view of a portion of point E in the middle; Figure 15 for Figure 13 A magnified view of a portion of point F in the middle; Figure 16 for Figure 13 A magnified view of a portion of point G in the middle; Figure 17 for Figure 5 Schematic diagram of the middle guide rail; Figure 18 for Figure 17 A sectional view along section CC; Figure 19 for Figure 18 A magnified view of part of H; Figure 20 for Figure 5 Sectional view along section DD; Figure 21 for Figure 20 A magnified view of part I in the diagram.

[0018] in: 100. Sewage tank; 201. Intake hose; 211. First corrugated pipe; 212. Second corrugated pipe; 300. Aeration unit; 301. Limiting ring; 302. Connecting plate; 311. Eccentric sleeve; 312. Support plate; 313. Elastic diaphragm; 314. Base; 315. Connecting pipe; 316. First limiting half-ring; 317. Second limiting half-ring; 318. Fixing column; 319. Circular through hole; 321. First through hole; 322. Second through hole; 341. First mating rod; 342. Second mating rod; 351. First movable groove; 352. Second movable groove; 361. Irregular tooth; 362. Gear tooth; 363. Limiting block; 371. Sealing ring; 372. Scraper; 373. Spring; 401. Guide rail; 402. Limiting block; 403. Support plate. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0020] The component designations used in this document, such as "first" and "second," are merely for distinguishing the described objects and do not have any sequential or technical meaning. The terms "connection" and "linkage" used in this invention, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0021] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0022] The following reference Figures 1 to 21 This invention describes an intelligent multi-stage wastewater treatment system, comprising a support module, an aeration module, and an air supply module. The support module includes a wastewater tank 100 for storing wastewater, which serves as the mounting base for other components. These components can be directly or indirectly installed within the wastewater tank 100, forming a relatively integrated whole. The air supply module includes an air inlet hose 201, a first corrugated pipe 211, and an external air supply system. The aeration module includes multiple aeration units 300, connected to each other via the first corrugated pipe 211. The multiple aeration units 300 are sequentially connected end-to-end to form a ring structure and are slidably disposed within the wastewater tank 100. The air inlet hose 201 is connected to the first corrugated pipe 211, and the external air supply system supplies gas to the aeration units 300 through the air inlet hose 201 and the first corrugated pipe 211.

[0023] The aeration unit 300 includes an eccentric sleeve 311, a base 314, an elastic diaphragm 313, and a limiting ring 301. The eccentric sleeve 311 can be composed of two identical semi-cylindrical bodies, each with a connecting plate 302 fixedly mounted on it. The two semi-cylindrical bodies are joined and fixed by the limiting ring 301 to form a complete cylindrical structure, with the corresponding two connecting plates 302 abutting against each other. A circular through hole 319 is provided on both connecting plates 302, penetrating both connecting plates 302, and the central axis of the circular through hole 319 does not coincide with the central axis of the eccentric sleeve 311. Furthermore, the eccentric sleeve 311 is coaxially and slidably connected to the base 314, and the eccentric sleeve 311 can slide along its own axial direction. The elastic diaphragm 313 is coaxially disposed between the base 314 and the eccentric sleeve 311. The elastic diaphragm 313 can slide and rotate relative to the base 314 and the eccentric sleeve 311. The elastic diaphragm 313 can slide along its own axis and rotate about its own axis. Furthermore, the elastic diaphragm 313 has a plurality of first through holes 321 for gas to pass through.

[0024] Specifically, when the external air supply system inputs gas into the aeration unit 300 through the air inlet hose 201 and the first corrugated pipe 211, the gas passes through the base 314 to the elastic diaphragm 313. Under the action of air pressure, the elastic diaphragm 313 slides upward along its own axis, and slides relative to the base 314, that is... Figure 10 In the vertical direction, the air pressure pushes the middle part of the elastic diaphragm 313 to expand and deform upward along its own axis, causing the eccentric sleeve 311 to slide upward synchronously and slide relative to the base 314; the expansion of the elastic diaphragm 313 opens the first through hole 321, and the gas enters the sewage as bubbles through the first through hole 321, achieving the purpose of aeration. During this process, the expansion of the elastic diaphragm 313 will gradually pass through the circular through hole 319, causing the contact area between the edge of the elastic diaphragm 313 and the inner wall of the connecting plate 302 to bear a large tensile stress, resulting in wear of the elastic diaphragm 313.

[0025] Furthermore, when the external gas supply system detects that the gas pressure exceeds the preset value, the external gas supply system automatically starts an alternating cycle of ventilation and extraction. By periodically introducing and extracting gas, the gas pressure is periodically regulated. This change in gas pressure periodically drives the elastic diaphragm 313 to rotate around its own axis, causing the elastic diaphragm 313 to rotate relative to the eccentric sleeve 311. This continuously changes the contact area between the elastic diaphragm 313 and the connecting plate 302, causing the stress points of the elastic diaphragm 313 to periodically alternate during expansion. This evenly distributes the localized concentrated stress across the entire contact circumference of the elastic diaphragm 313, effectively preventing damage to the elastic diaphragm 313 caused by long-term fixed-point wear, thereby extending the overall service life of the elastic diaphragm 313.

[0026] Specifically, when the eccentric sleeve 311 moves upward to the end of its stroke and stops, the elastic diaphragm 313 continues to expand axially due to continuous pressure, causing a portion of the elastic diaphragm 313 to tend to adhere to the inner wall of the connecting plate 302, forming an effective dynamic sealing structure to prevent sewage from flowing between the elastic diaphragm 313 and the base 314.

[0027] When the external gas supply system stops supplying gas, the gas pressure disappears, and the elastic diaphragm 313 returns to its original state by relying on its own elasticity and the action of water pressure, thereby closing the first through hole 321 and preventing sewage backflow.

[0028] In one embodiment, the support module further includes a guide rail 401 fixed to the bottom of the sewage tank 100. The guide rail 401 is connected end to end to form a ring structure, and this ring structure is the same as the ring structure formed by multiple aeration units 300. The aeration unit 300 also includes a connecting pipe 315, a first limiting half-circle 316 and a second limiting half-circle 317. The first limiting half-circle 316 and the second limiting half-circle 317 are both coaxially connected to the connecting pipe 315, and the first limiting half-circle 316 and the second limiting half-circle 317 are detachably connected. Further, adjacent connecting pipes 315 are connected by a first corrugated pipe 211. The first limiting half-circle 316, the second limiting half-circle 317 and the connecting pipe 315 are all slidably disposed inside the guide rail 401, and the first limiting half-circle 316, the second limiting half-circle 317 and the connecting pipe 315 all slide along the extension direction of the guide rail 401. A fixing post 318 is fixedly disposed on the first limiting half-circle 316, and the base 314 is coaxially threadedly connected to the fixing post 318.

[0029] Furthermore, a limiting block 402 is fixedly installed inside the guide rail 401. Specifically, multiple sets of limiting blocks 402 are fixedly installed inside the straight section of the guide rail 401. These multiple sets of limiting blocks 402 are arranged circumferentially around the axis of the connecting pipe 315, effectively limiting the radial displacement of the first limiting half-turn 316, the second limiting half-turn 317, and the connecting pipe 315 during the sliding process, preventing them from shaking or deviating during operation and ensuring smooth movement. In the curved section of the guide rail 401, the limiting block 402 is only installed at the bottom of the guide rail 401, allowing the first limiting half-turn 316, the second limiting half-turn 317, and the connecting pipe 315 to adjust their angles when turning, avoiding jamming.

[0030] In one embodiment, the aeration unit 300 further includes a support disk 312. The support disk 312 is coaxially disposed between the elastic diaphragm 313 and the base 314. The support disk 312 can slide along its own axial direction and rotate about its own axial direction, thus allowing relative sliding and rotation of the support disk 312 relative to the base 314. Both the edge of the elastic diaphragm 313 and the support disk 312 are made of rigid material to ensure that the support disk 312 can push the elastic diaphragm 313 to slide synchronously. The support disk 312 has multiple second through holes 322 for gas passage, and the second through holes 322 are axially offset from the first through holes 321.

[0031] In one embodiment, a first mating rod 341 is fixedly disposed on the elastic diaphragm 313, and a plurality of irregularly shaped teeth 361 are fixedly disposed on the eccentric sleeve 311. The plurality of irregularly shaped teeth 361 are arranged circumferentially around the central axis of the eccentric sleeve 311. In particular, the right side of the irregularly shaped teeth 361 is a slope inclined to the left, i.e. Figure 14 The vertical and horizontal directions; the left side of the irregular tooth 361 is composed of a near-vertical inclined plane and a rightward inclined plane, and the two are set at an angle.

[0032] Furthermore, the outer side of the base 314 is provided with a first movable groove 351 extending around its own axial direction, and the inner side of the base 314 is provided with a second movable groove 352 extending around its own axial direction, and the axial dimension of the first movable groove 351 is smaller than the axial dimension of the second movable groove 352. The eccentric sleeve 311 is slidably connected to the base 314 via the first movable groove 351, and the support plate 312 is slidably connected to the base 314 via the second movable groove 352.

[0033] Specifically, when the external gas supply system introduces gas through the intake hose 201 and the first bellows 211, the gas flows to the support plate 312 through the connecting pipe 315 and the base 314. Under the action of gas pressure, the support plate 312 slides upward along its own axis, causing the elastic diaphragm 313 to slide upward synchronously. Figure 10 In the vertical direction. At the same time, the gas passes through the second through hole 322 to the elastic diaphragm 313, causing the middle part of the elastic diaphragm 313 to expand and deform upward along its own axis, driving the eccentric sleeve 311 to slide upward synchronously and slide relative to the base 314; the expansion of the elastic diaphragm 313 opens the first through hole 321, and the gas passes through the first through hole 321 to form bubbles and enter the sewage, achieving the purpose of aeration.

[0034] Because the axial dimension of the first movable groove 351 is smaller than that of the second movable groove 352, when the eccentric sleeve 311 rises to a certain height, its movement is restricted and it stops. However, the elastic diaphragm 313 still has a tendency to expand further due to continuous air pressure, so that a part of the elastic diaphragm 313 tends to adhere to the inner wall of the connecting plate 302, forming an effective dynamic sealing structure to prevent sewage from flowing between the elastic diaphragm 313 and the base 314.

[0035] When the external gas supply system detects that the gas pressure exceeds the preset value, it automatically initiates a cycle of alternating ventilation and extraction. By periodically introducing and extracting gas, the gas pressure is periodically regulated. During the ventilation phase, the support plate 312, the elastic diaphragm 313, and the eccentric sleeve 311 all slide upwards along their respective axes. Figure 10 In the vertical direction, the elastic diaphragm 313 expands. At this time, the first mating rod 341 slides upward along the right side of the irregular tooth 361, that is... Figure 14 In the vertical and horizontal directions; during the evacuation phase, the air pressure is released, and the support plate 312, elastic diaphragm 313, and eccentric sleeve 311 all slide downwards along their own axial direction, while the elastic diaphragm 313 gradually retracts. At this time, the first mating rod 341 slides downwards along the left inclined surface of the profiled tooth 361, thereby driving the elastic diaphragm 313 to rotate around its own axial direction.

[0036] In one embodiment, a limiting block 363 is fixedly disposed on the base 314. Specifically, the limiting block 363 is fixedly disposed in the first movable groove 351 to limit the eccentric sleeve 311 from rotating about its own axis.

[0037] In one embodiment, a second mating rod 342 is fixedly mounted on the eccentric sleeve 311, and a support plate 403 is fixedly mounted on the guide rail 401. Multiple gear teeth 362 are fixedly mounted on the support plate 403 on the straight section of the guide rail 401, and these gear teeth 362 are arranged radially along the eccentric sleeve 311. Both sides of the gear teeth 362 are sloped. Along the traveling direction of the aeration unit 300, the slope that the second mating rod 342 first contacts is the first slope, with a gentler inclination angle; the other slope is the second slope, with a steeper inclination angle. The top of the gear teeth 362 is rounded or has a reserved space, allowing the second mating rod 342 to smoothly pass over the top of the gear teeth 362, preventing the second mating rod 342 from getting stuck when it reaches the top, and ensuring smooth movement.

[0038] Specifically, during the ventilation phase, the support plate 312, the elastic diaphragm 313, and the eccentric sleeve 311 all slide upwards along their own axial direction, that is... Figure 10 In the vertical direction. At this time, the second mating rod 342 slides upward along the first inclined surface of the gear tooth 362 to the top of the gear tooth 362, and generates radial displacement, that is Figure 19In the vertical direction; due to the gentle slope of the first slope, the second mating rod 342 rises smoothly with little resistance; during the suction phase, the air pressure is released, and the support plate 312, elastic diaphragm 313, and eccentric sleeve 311 all slide downwards along their own axial direction. At this time, the second mating rod 342 smoothly passes over the top of the gear tooth 362 and slides downwards along the second slope of the gear tooth 362 to the bottom of the gear tooth 362. Due to the steepness of the second slope, under the weight of the second mating rod 342 and its mating parts, and the action of the external air supply system, the second mating rod 342 descends rapidly, and due to the action of the limiting block 363, the eccentric sleeve 311 generates radial displacement, thereby driving the base 314 and the connecting pipe 315 connected to it to move synchronously, thus pushing the entire aeration unit 300 forward along the guide rail 401. It is worth noting that, since there are no gear teeth 362 on the support plate 403 on the curved section guide rail 401, when the eccentric sleeve 311 on the straight section guide rail 401 moves forward, it will push the eccentric sleeve 311 on the curved section guide rail 401 and its connected components to pass through the curve smoothly, thereby achieving continuous and stable sliding operation.

[0039] In particular, dead zones often exist at the edges and bottom of the sewage tank 100. The uneven and insufficient mixing of sewage and gas within these dead zones leads to reduced sewage treatment efficiency. Therefore, by axial and radial movement of components such as the eccentric sleeve 311, the elastic diaphragm 313, and the support plate 312, the dead zones at the bottom and edges of the tank can be turbulent, causing the sewage within these dead zones to flow and increasing its contact with gas, thereby improving sewage treatment efficiency.

[0040] In one embodiment, a sealing ring 371 and a scraper 372 are coaxially disposed inside the eccentric sleeve 311, with both the sealing ring 371 and the scraper 372 positioned between the elastic diaphragm 313 and the eccentric sleeve 311. The scraper 372 is coaxially slidably connected to the sealing ring 371, and is disposed inside the sealing ring 371. Both the sealing ring 371 and the scraper 372 are capable of sliding along their own axial direction. Specifically, the axial dimension of the sealing ring 371 is larger than the axial dimension of the scraper 372.

[0041] Furthermore, a spring 373 is fixedly installed on the scraper 372, and one end of the spring 373 is fixedly connected to the eccentric sleeve 311.

[0042] Specifically, when the elastic diaphragm 313 slides upward along its own axis, it drives the sealing ring 371 and the scraper 372 to slide upward synchronously, that is... Figure 11In the vertical direction. When the eccentric sleeve 311 stops sliding, the continuous expansion of the elastic diaphragm 313 compresses the sealing ring 371, causing the sealing ring 371 to form an effective seal against the connecting plate 302, preventing sewage from flowing between the elastic diaphragm 313 and the base 314. At the same time, the continuous expansion of the elastic diaphragm 313 will further push the scraper 372 to slide upward along its own axis and cause relative displacement with the sealing ring 371, thereby compressing the spring 373. At this time, when the elastic diaphragm 313 rotates around its own axis and rotates relative to the scraper 372, the scraper 372 can remove impurities from the surface of the elastic diaphragm 313. When the elastic diaphragm 313 slides downward along its own axis, the sealing ring 371 and the scraper 372 gradually return to their original state. At the same time, the spring 373 gradually returns to its original state, and its elastic force further pushes the scraper 372 to return to its original state.

[0043] Furthermore, a second corrugated pipe 212 is provided on the coaxial outer side of the eccentric sleeve 311. One end of the second corrugated pipe 212 is fixedly connected to the eccentric sleeve 311, and the other end is fixedly connected to the base 314, further preventing sewage from flowing into the interior of the eccentric sleeve 311.

[0044] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. An intelligent multi-stage sewage treatment system, characterized in that, The utility model relates to a sewage treatment device, including: Support module, aeration module and gas delivery module; The support module includes a sewage pool for storing sewage; The gas delivery module is used to deliver gas to the aeration module; The aeration module includes a plurality of aeration units connected in sequence, which are arranged in the sewage pool for aeration treatment of sewage; The aeration unit includes an eccentric sleeve, a base and an elastic diaphragm, the eccentric sleeve is coaxially and slidingly connected with the base, the elastic diaphragm is coaxially arranged in the eccentric sleeve, the eccentric sleeve and the elastic diaphragm are coaxially and slidingly connected, and the elastic diaphragm and the eccentric sleeve can rotate relative to each other; a circular through hole is formed in the eccentric sleeve, and the center axis of the circular through hole does not coincide with the center axis of the eccentric sleeve; a plurality of first through holes for gas passing through are formed in the elastic diaphragm; when the gas delivery module delivers gas to the elastic diaphragm, the eccentric sleeve and the elastic diaphragm can slide along their own axes, and the middle part of the elastic diaphragm can expand along its own axis to open the first through hole; When the gas delivery module detects that the input gas pressure is too large, the gas delivery module can periodically drive the elastic diaphragm to rotate around its own axis to change the relative contact area of the elastic diaphragm and the eccentric sleeve. 2.The intelligent multi-stage sewage treatment system according to claim 1, characterized in that, The support module further includes a guide rail fixed to the bottom of the sewage pool, the guide rail is connected in sequence to form an annular structure; the aeration unit further includes a communication pipe, a first limiting half circle and a second limiting half circle, the first limiting half circle and the second limiting half circle are coaxially connected with the communication pipe, and the first limiting half circle and the second limiting half circle are detachably connected; the first limiting half circle, the second limiting half circle and the communication pipe are slidingly arranged in the guide rail, and all slide along the extension direction of the guide rail; a fixed column is fixedly arranged on the first limiting half circle, and the base is coaxially and threadedly connected with the fixed column. 3.The intelligent multi-stage sewage treatment system according to claim 2, characterized in that, A limiting block is fixedly arranged in the guide rail, and the limiting block is used to support the first limiting half circle, the second limiting half circle and the communication pipe.

4. The intelligent multi-stage sewage treatment system according to claim 1, characterized in that, The aeration unit includes a support disc coaxially arranged between the base and the elastic diaphragm, the support disc and the base can slide relative to each other, and the support disc is coaxially and slidingly connected with the eccentric sleeve; the elastic diaphragm is coaxially connected with the support disc, a plurality of second through holes for gas passing through are formed in the support disc, and the second through holes are axially misaligned with the first through holes; when the gas delivery module delivers gas, the support disc can slide along its own axis to drive the elastic diaphragm to slide along its own axis.

5. The intelligent multi-stage sewage treatment system according to claim 1, wherein, A first matching rod is fixedly arranged on the elastic diaphragm, a plurality of profiled teeth are fixedly arranged on the eccentric sleeve, and the profiled teeth are circumferentially arranged around the center axis of the eccentric sleeve; when the elastic diaphragm rotates around its own axis, the first matching rod cooperates with the profiled teeth to drive the elastic diaphragm to rotate around its own axis. 6.The intelligent multi-stage sewage treatment system according to claim 1, characterized in that, The base is fixedly provided with a limiting block for limiting rotation of the eccentric sleeve about its own axis. 7.The intelligent multi-stage sewage treatment system according to claim 2, characterized in that, The eccentric sleeve is fixedly provided with a second matching rod, the guide rail is fixedly provided with a support plate, a plurality of gear teeth are fixedly provided on the support plate on the straight section of the guide rail, and the plurality of gear teeth are arranged radially along the eccentric sleeve; when the eccentric sleeve slides along its own axis, the second matching rod cooperates with the gear teeth to drive the communication pipe to slide along the extension direction of the guide rail. 8.The intelligent multi-stage sewage treatment system according to claim 1, characterized in that, The eccentric sleeve is coaxially provided with a scraper inside, the scraper can slide along its own axis, and the scraper is arranged between the elastic diaphragm and the eccentric sleeve; the scraper is used to remove impurities on the surface of the elastic diaphragm. 9.The intelligent multi-stage sewage treatment system according to claim 8, characterized in that, The eccentric sleeve is coaxially provided with a sealing ring inside, the sealing ring can slide along its own axis, and the sealing ring is arranged between the elastic diaphragm and the eccentric sleeve; the scraper and the sealing ring are coaxially connected in sliding mode, the scraper is arranged on the inner side of the sealing ring, and the axial dimension of the sealing ring is greater than that of the scraper; the sealing ring is used to prevent sewage from flowing between the elastic diaphragm and the base. 10.The intelligent multi-stage sewage treatment system according to claim 8, characterized in that, A spring is further included, one end of the spring is fixedly connected with the scraper, and the other end of the spring is fixedly connected with the eccentric sleeve; the spring is used to drive the scraper to reset.

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