Staged sewage treatment equipment for ecological restoration of water area

By designing a graded sewage treatment equipment, and using the cooperation of the filtering mechanism and the recycling mechanism, efficient filtration and automatic cleaning of sewage are achieved, solving the problems of blockage and difficulty in cleaning traditional equipment, and improving treatment efficiency and equipment stability.

CN119524499AInactive Publication Date: 2025-02-28SHANDONG NORMAL UNIV
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Patent Information

Application Number
CN202411836853.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-13
Publication Date
2025-02-28
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

Traditional sewage treatment equipment is easily blocked by impurities during the filtration process, resulting in reduced filtration efficiency, shortened equipment life and increased operation and maintenance costs. It also has poor cleaning of impurities, making it difficult to meet the needs of large-scale and continuous sewage treatment.

Method used

A hierarchical sewage treatment equipment is designed, and the filter mechanism and the recovery mechanism cooperate with each other. The rotation of the rotating rod and the filter plate is driven by the motor to realize the preliminary filtration and secondary filtration of the sewage. Through the coordination of the dislocation ring and the friction plate, impurities inside the equipment are automatically cleaned up to prevent blockage.

Benefits of technology

It improves the efficiency of sewage treatment and the working time of equipment, reduces the difficulty and cost of operation and maintenance, and ensures efficient filtration of sewage and long-term and stable operation of equipment.

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Abstract

The invention relates to the technical field of sewage treatment equipment, and particularly discloses graded sewage treatment equipment for ecological restoration of a water area, the graded sewage treatment equipment comprises an outer frame body, the outer frame body is tubular, the outer surface of the top of the outer frame body is fixedly connected with a mounting frame, and the top of the mounting frame is arranged above the outer frame body. In the filtering process, a motor is started to drive a rotating rod to rotate, and meanwhile, a rotating ring is driven to rotate through a connecting frame, so that a poke rod on the rotating rod rotates along with the rotating rod, and sewage preliminarily entering a filtering frame is poked; untreated sewage containing a large amount of impurities is prevented from precipitating in the filtering frame to block the filtering frame and reduce the filtering effect, meanwhile, when a motor is started, a filtering plate can be driven to move on the upper surface of a filtering ring, a cavity between the filtering frame and the outer frame body is stirred through the filtering plate, the impurities passing through the filtering frame are prevented from blocking the filtering ring, and the filtering effect is improved. The filtering effect is further improved, and the filtering fluency is improved.
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Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment equipment, in particular to a hierarchical sewage treatment equipment for water area ecological restoration. Background Art

[0002] The key to water ecological restoration lies in efficient sewage treatment to reduce pollutant discharge, improve water quality, and restore water ecology. The hierarchical sewage treatment equipment has a multi-stage treatment process based on sewage characteristics and treatment requirements. Each stage works together to increase efficiency, remove multiple pollutants, improve water quality, reduce energy consumption and operation and maintenance costs, and increase equipment stability and life. It is in line with the concept of environmental protection and sustainable development and has far-reaching significance for water ecological restoration.

[0003] Traditional sewage treatment equipment has many limitations. The filtering structure of some equipment is simple and easily blocked by sewage impurities, resulting in reduced filtering efficiency, shortened equipment life, and increased operation and maintenance costs. For example, when sewage contains many impurities and mixed components, the pores of the filter or filter material are easily blocked, hindering water flow and filtration. In addition, the equipment does not clean impurities well and mostly relies on manual regular cleaning and maintenance, which is time-consuming and labor-intensive, interrupts the treatment process, and affects the continuity and efficiency of treatment. It is difficult to meet the needs of large-scale and continuous sewage treatment, limiting its application in water ecological restoration projects. It is urgently needed to innovate and improve to improve treatment capacity and efficiency and reduce the difficulty of operation and maintenance. Summary of the invention

[0004] The present invention provides a hierarchical sewage treatment device for water area ecological restoration, which solves the problems mentioned in the above background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A hierarchical sewage treatment equipment for water ecological restoration, comprising an outer frame, the outer frame is arranged in a circular tube shape, a mounting frame is fixedly connected to the top outer surface of the outer frame, wherein the top of the mounting frame is arranged above the outer frame, and further comprising: A filter mechanism, wherein the filter mechanism is fixedly mounted inside the outer frame, wherein the filter mechanism rotates around a central axis of the outer frame; A recovery mechanism, the recovery mechanism is fixedly connected to the bottom of the outer frame, and the recovery mechanism cooperates with the filtering mechanism; The filtering mechanism comprises a filter frame, which is arranged inside an outer frame, wherein the filter frame and the outer frame are arranged on the same central axis, a filter ring is fixedly connected to the bottom outer surface of the filter frame, the outer surface of the filter ring is fixedly connected to the bottom inner surface of the outer frame, a rotating ring is rotatably connected to the top outer surface of the filter frame, the outer surface of the rotating ring is rotatably connected to the top inner surface of the outer frame, a connecting frame is fixedly connected to the upper surface of the rotating ring, a motor is fixedly connected to the top of the mounting frame, a rotating rod is rotatably connected to the output end of the motor, an end of the rotating rod away from the motor passes through the filter frame, a toggle rod is fixedly connected to the middle outer surface of the rotating rod, wherein the toggle rod is arranged inside the filter frame, and the middle part of the connecting frame is fixedly connected to the top outer surface of the rotating rod.

[0006] Preferably, a filter plate is fixedly connected to the bottom surface of the rotating ring, and the filter plate is vertically arranged, wherein the bottom of the filter plate is attached to the upper surface of the filter ring, and a rotating plate is fixedly connected to the inner surface of the filter plate, and the rotating plate is arranged in an arc shape, and the rotating plate is rotatably connected to the outer surface of the filter frame.

[0007] Preferably, the end of the filter plate away from the rotating plate is fixedly connected with an offset ring, and the offset ring is rotatably connected to the inner surface of the outer frame. The outer end of the filter plate is fixedly connected with a matching plate, and the matching plate is arranged in an arc shape, wherein the matching plate and the offset ring are combined into a nearly tubular shape.

[0008] Preferably, a first liquid leakage groove is provided at the bottom of the matching plate, and a second liquid leakage groove is provided through the outer surface of the bottom of the outer frame, wherein the first liquid leakage groove and the second liquid leakage groove are of the same size.

[0009] Preferably, one end of the matching plate away from the filter plate is hinged with a closing plate through a torsion spring, and the closing plate is initially arranged in an inclined shape. The outer surface of one end of the rotating plate away from the filter plate is fixedly connected with a baffle, wherein the closing plate rotates to contact the baffle.

[0010] Preferably, a friction plate is fixedly embedded on the inner surface of the outer frame, the friction plate is arranged on the inner side of the second liquid leakage groove, the friction plate is arranged as a special-shaped plate, wherein a high friction state is arranged between the friction plate and the closing plate.

[0011] Preferably, the recovery mechanism includes a bottom frame, the top of the bottom frame is fixedly connected to the bottom surface of the outer frame, the top outer surface of the bottom frame is fixedly connected to a recovery ring, the edge upper surface of the recovery ring is fixedly connected to a barrier ring, and the bottom of the recovery ring is fixedly connected to an adapter ring.

[0012] Preferably, one end of the adapter ring away from the recovery ring is fixedly connected to the middle outer surface of the bottom frame, and a connecting groove is provided on the inner side of the adapter ring, and the connecting groove is respectively connected to the inside of the adapter ring and the bottom frame, and a bottom cover is fixedly connected to the bottom of the bottom frame, and a liquid outlet hole is opened through the side surface of the bottom cover.

[0013] Preferably, a collar is fixedly connected to the bottom of the rotating rod, and a stirring plate is fixedly connected to the outer surface of the collar, wherein three stirring plates are arranged at fixed intervals around the central axis of the collar, and a fine filter plate is fixedly connected to the bottom inner surface of the bottom frame. When sewage needs to be treated, the sewage can be injected into the filter frame, and the motor is started. After the sewage enters the filter frame, it will be preliminarily filtered through the through holes on the filter frame, and larger impurities will be filtered in the filter frame. The remaining sewage will enter the cavity between the filter frame and the outer frame through the filter frame, and complete secondary filtration through the filter ring at the bottom, and finally enter the bottom frame, and complete final filtration through the fine filter plate on the bottom frame, and then complete filtration through the liquid outlet hole on the bottom cover.

[0014] The present invention provides a hierarchical sewage treatment equipment for water ecological restoration. It has the following beneficial effects: 1. In the hierarchical sewage treatment equipment for ecological restoration of the water area, during the filtering process, the starting of the motor will drive the rotating rod to rotate, and at the same time, the rotating ring will be driven to rotate through the connecting frame, that is, the toggle rod on the rotating rod will follow the rotating rod to rotate, thereby realizing the toggle of the sewage initially entering the filter frame, and avoiding the untreated sewage containing a large amount of impurities from being precipitated in the filter frame to block the filter frame and reduce the filtering effect. When the sewage that has been initially filtered enters the top of the filter ring, since the bottom surface of the rotating ring is fixedly connected with the filter plate, when the motor is started, it will drive the filter plate to move on the upper surface of the filter ring, and then the cavity between the filter frame and the outer frame is stirred through the filter plate to avoid the impurities passing through the filter frame from clogging the filter ring, thereby further improving the filtering effect and improving the smoothness of the filtering.

[0015] 2. In the hierarchical sewage treatment equipment for ecological restoration of water bodies, when the filter plate rotates, the impurities that cannot pass through the filter plate will be squeezed onto the surface of the filter plate by water pressure, and at the same time, the dislocation ring and the matching plate will be driven to rotate. When the outer surface of the closing plate on the matching plate contacts the friction plate on the inner side of the second leakage groove during the rotation, the closing plate will rotate under the action of friction, and its outer end will gradually contact the baffle plate to close the cavity between the closing plate and the filter plate. With the continuous rotation of the matching plate, the first leakage groove and the second leakage groove will be aligned eventually. At this time, one side of the closing plate is in a closed state, that is, the water The pressure will instantly generate an outward flushing force on the filter plate, causing the impurities accumulated on the surface of the filter plate to be flushed outward through the second leakage groove. When the closing plate passes through the friction plate, the closing plate is reset under the action of the torsion spring. At this time, the first leakage groove and the second leakage groove are re-displaced to seal the inside of the outer frame, that is, the filter plate continues to block impurities in the sewage, that is, when the sewage is stirred to avoid clogging the filter ring, the impurities in the sewage can be automatically discharged outward regularly, which greatly improves the working efficiency of the filter plate and further avoids clogging of the filter ring and reduces the filtering effect.

[0016] 3. In the hierarchical sewage treatment equipment for ecological restoration of water bodies, sewage containing impurities will enter the recovery ring on the outside after passing through the second leakage trough, and will be in the cavity formed by the recovery ring and the barrier ring, and will finally be filtered again through the through hole on the recovery ring and enter the adapter ring at the bottom, and enter the bottom frame through the connecting groove to mix with the sewage passing through the filter ring, and finally enter the bottom cover through the fine filter plate for re-filtration and complete the purification and discharge of sewage through the liquid outlet. By setting the filtering mechanism and the recovery mechanism to work together, the equipment itself can be automatically cleaned while filtering the sewage, thereby achieving the effect of anti-blocking, greatly improving the working time of the equipment and improving the filtering efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view of the present invention; Figure 2 It is a schematic structural diagram of the rotating ring of the present invention; Figure 3 It is a schematic diagram of the internal structure of the outer frame of the present invention; Figure 4 It is a schematic diagram of the structure of the filter ring of the present invention; Figure 5 It is a structural schematic diagram of the toggle lever of the present invention; Figure 6 It is a schematic diagram of the structure of the filter plate of the present invention; Figure 7 It is a structural schematic diagram of the adapter ring of the present invention; Figure 8 It is a schematic diagram of the internal structure of the bottom frame of the present invention.

[0018] In the figure: 1. outer frame; 2. mounting frame; 3. filtering mechanism; 31. filtering frame; 32. filtering ring; 33. rotating ring; 34. connecting frame; 35. motor; 36. rotating rod; 37. toggle rod; 38. filtering plate; 39. rotating plate; 310. offset ring; 311. matching plate; 312. first leakage groove; 313. second leakage groove; 314. closing plate; 315. baffle plate; 316. friction plate; 4. recovery mechanism; 41. bottom frame; 42. recovery ring; 43. barrier ring; 44. adapter ring; 45. connecting groove; 46. bottom cover; 47. liquid outlet; 48. sleeve ring; 49. stirring plate; 410. fine filter plate. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] First embodiment: Figures 1 to 8 As shown, the present invention provides a technical solution: a hierarchical sewage treatment equipment for water ecological restoration, comprising an outer frame 1, the outer frame 1 is arranged in a circular tube shape, a mounting frame 2 is fixedly connected to the top outer surface of the outer frame 1, wherein the top of the mounting frame 2 is arranged above the outer frame 1, and further comprising: The filter mechanism 3 is fixedly mounted inside the outer frame 1, wherein the filter mechanism 3 rotates around the central axis of the outer frame 1; A recovery mechanism 4, which is fixedly connected to the bottom of the outer frame 1, and works in cooperation with the filtering mechanism 3; The filter mechanism 3 includes a filter frame 31, which is arranged inside the outer frame 1, wherein the filter frame 31 and the outer frame 1 are arranged on the same central axis, a filter ring 32 is fixedly connected to the bottom outer surface of the filter frame 31, and the outer surface of the filter ring 32 is fixedly connected to the bottom inner surface of the outer frame 1, a rotating ring 33 is rotatably connected to the top outer surface of the filter frame 31, and the outer surface of the rotating ring 33 is rotatably connected to the top inner surface of the outer frame 1, and a connecting frame 34 is fixedly connected to the upper surface of the rotating ring 33, and a motor 35 is fixedly connected to the top of the mounting frame 2, and a rotating rod 36 is rotatably connected to the output end of the motor 35, and the end of the rotating rod 36 away from the motor 35 passes through the filter frame 31, and a toggle rod 37 is fixedly connected to the middle outer surface of the rotating rod 36, wherein the toggle rod 37 is arranged inside the filter frame 31, and the middle part of the connecting frame 34 is fixedly connected to the top outer surface of the rotating rod 36.

[0021] A filter plate 38 is fixedly connected to the bottom surface of the rotating ring 33, and the filter plate 38 is vertically arranged, wherein the bottom of the filter plate 38 is attached to the upper surface of the filter ring 32, and a rotating plate 39 is fixedly connected to the inner surface of the filter plate 38, and the rotating plate 39 is arranged in an arc shape, and the rotating plate 39 is rotatably connected to the outer surface of the filter frame 31.

[0022] One end of the filter plate 38 away from the rotating plate 39 is fixedly connected to a dislocation ring 310, and the dislocation ring 310 is rotatably connected to the inner surface of the outer frame 1. The outer end of the filter plate 38 is fixedly connected to a matching plate 311, and the matching plate 311 is set to an arc shape, wherein the matching plate 311 and the dislocation ring 310 are combined into a nearly tubular shape.

[0023] A first liquid leakage groove 312 is formed at the bottom of the matching plate 311 , and a second liquid leakage groove 313 is formed through the outer surface of the bottom of the outer frame 1 , wherein the first liquid leakage groove 312 and the second liquid leakage groove 313 are of the same size.

[0024] The end of the matching plate 311 away from the filter plate 38 is hinged with a closing plate 314 through a torsion spring. The closing plate 314 is initially set in an inclined shape. The outer surface of the end of the rotating plate 39 away from the filter plate 38 is fixedly connected with a baffle 315, wherein the closing plate 314 rotates to contact the baffle 315.

[0025] The inner surface of the outer frame 1 is fixedly inlaid with a friction plate 316 , which is arranged on the inner side of the second liquid leakage groove 313 . The friction plate 316 is arranged as a special-shaped plate, wherein a high friction state is arranged between the friction plate 316 and the closing plate 314 .

[0026] Second embodiment: Figures 1 to 8 As shown, the recovery mechanism 4 includes a bottom frame 41, the top of the bottom frame 41 is fixedly connected to the bottom surface of the outer frame 1, a recovery ring 42 is fixedly connected to the top outer surface of the bottom frame 41, a barrier ring 43 is fixedly connected to the upper edge surface of the recovery ring 42, and an adapter ring 44 is fixedly connected to the bottom of the recovery ring 42.

[0027] One end of the adapter ring 44 away from the recovery ring 42 is fixedly connected to the middle outer surface of the bottom frame 41, and a connecting groove 45 is provided on the inner side of the adapter ring 44. The connecting groove 45 is respectively connected to the inside of the adapter ring 44 and the bottom frame 41. A bottom cover 46 is fixedly connected to the bottom of the bottom frame 41, and a liquid outlet hole 47 is opened through the side surface of the bottom cover 46.

[0028] A collar 48 is fixedly connected to the bottom of the rotating rod 36 , and a stirring plate 49 is fixedly connected to the outer surface of the collar 48 , wherein three stirring plates 49 are arranged at fixed intervals around the central axis of the collar 48 , and a fine filter plate 410 is fixedly connected to the bottom inner surface of the bottom frame 41 .

[0029] During operation, when sewage needs to be treated, the sewage can be injected into the filter frame 31 and the motor 35 is started. After the sewage enters the filter frame 31, it will be initially filtered through the through holes on the filter frame 31, and larger impurities will be filtered in the filter frame 31. The remaining sewage will pass through the filter frame 31 into the cavity between the filter frame 31 and the outer frame 1, and complete secondary filtration through the filter ring 32 at the bottom, and finally enter the bottom frame 41, and complete final filtration through the fine filter plate 410 on the bottom frame 41, and then complete filtration through the liquid outlet 47 on the bottom cover 46. During the filtering process, the start of the motor 35 will drive the rotating rod 36 to rotate, and at the same time, it will drive the rotating ring 33 to rotate through the connecting frame 34, that is, the toggle rod on the rotating rod 36 The filter ring 32 is a filter element that is used to filter the filter elements 31. The filter ring 32 is a filter element that is used to filter the filter elements 31. The filter ring 32 is a filter element that is used to filter the filter elements 31. The filter ring 32 is a filter element that is used to filter the filter elements 31. The filter ring 32 is a filter element that is used to filter the filter elements 31. The first and second liquid leakage grooves 312 and 313 are pressed against the surface of the filter plate 38, and the misalignment ring 310 and the matching plate 311 are driven to rotate. When the outer surface of the closing plate 314 on the matching plate 311 contacts the friction plate 316 on the inner side of the second liquid leakage groove 313 during the rotation, the closing plate 314 will rotate under the action of the friction force, and its outer end will gradually contact the baffle plate 315 to close the cavity between the closing plate 314 and the filter plate 38. As the matching plate 311 continues to rotate, the first liquid leakage groove 312 and the second liquid leakage groove 313 are finally aligned. At this time, one side of the closing plate 314 is in a closed state, that is, the water pressure will instantly generate an outward flushing force on the filter plate 38, prompting the impurities accumulated on the surface of the filter plate 38 to be flushed outward through the second liquid leakage groove 313. After the filter ring 32 is blocked, the filter 38 is used to filter the filter ring 32. The filter ring 32 ...44.And enter the bottom frame 41 through the connecting groove 45 and mix with the sewage passing through the filter ring 32, and finally enter the bottom cover 46 through the fine filter plate 410 for re-filtration and discharge through the liquid outlet 47 to complete the purification of the sewage. By setting the filtering mechanism 3 and the recycling mechanism 4 to work together, the equipment itself can be automatically cleaned while filtering the sewage, thereby achieving the effect of anti-blocking, greatly improving the working time of the equipment and improving the filtering efficiency.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by... does not exclude the existence of other identical elements in the process, method, article or device including the element".

Claims

1. A hierarchical sewage treatment device for water ecological restoration, comprising an outer frame (1), characterized in that: The outer frame (1) is configured in a circular tube shape, and a mounting frame (2) is fixedly connected to the top outer surface of the outer frame (1), wherein the top of the mounting frame (2) is arranged above the outer frame (1), and further comprises: A filter mechanism (3), the filter mechanism (3) being fixedly mounted inside the outer frame (1), wherein the filter mechanism (3) rotates around a central axis of the outer frame (1); A recovery mechanism (4), the recovery mechanism (4) being fixedly connected to the bottom of the outer frame (1), and the recovery mechanism (4) working in coordination with the filtering mechanism (3); The filtering mechanism (3) comprises a filtering frame (31), the filtering frame (31) being arranged inside the outer frame (1), the filtering frame (31) and the outer frame (1) being arranged on the same central axis, a filtering ring (32) being fixedly connected to the bottom outer surface of the filtering frame (31), the outer surface of the filtering ring (32) being fixedly connected to the bottom inner surface of the outer frame (1), and a rotating ring (33) being rotatably connected to the top inner surface of the filtering frame (31). The upper surface of the rotating ring (33) is fixedly connected to a connecting frame (34), the top of the mounting frame (2) is fixedly connected to a motor (35), the output end of the motor (35) is rotatably connected to a rotating rod (36), one end of the rotating rod (36) away from the motor (35) passes through the filter frame (31), the middle outer surface of the rotating rod (36) is fixedly connected to a toggle rod (37), wherein the toggle rod (37) is arranged inside the filter frame (31), and the middle part of the connecting frame (34) is fixedly connected to the top outer surface of the rotating rod (36).

2. The hierarchical sewage treatment equipment for water ecological restoration according to claim 1 is characterized by: A filter plate (38) is fixedly connected to the bottom surface of the rotating ring (33), and the filter plate (38) is arranged vertically, wherein the bottom of the filter plate (38) is attached to the upper surface of the filter ring (32), and a rotating plate (39) is fixedly connected to the inner surface of the filter plate (38), and the rotating plate (39) is arranged in an arc shape. The rotating plate (39) is rotatably connected to the outer surface of the filter frame (31).

3. The hierarchical sewage treatment equipment for water ecological restoration according to claim 2 is characterized by: An end of the filter plate (38) away from the rotating plate (39) is fixedly connected to a dislocation ring (310), and the dislocation ring (310) is rotatably connected to the inner surface of the outer frame (1). An outer end of the filter plate (38) is fixedly connected to a matching plate (311), and the matching plate (311) is arranged in an arc shape, wherein the matching plate (311) and the dislocation ring (310) are combined into a nearly tubular shape.

4. The hierarchical sewage treatment equipment for water ecological restoration according to claim 3 is characterized by: The bottom of the matching plate (311) is provided with a first liquid leakage groove (312), and the bottom outer surface of the outer frame (1) is provided with a second liquid leakage groove (313) penetrating therethrough, wherein the first liquid leakage groove (312) and the second liquid leakage groove (313) are of the same size.

5. The hierarchical sewage treatment equipment for water ecological restoration according to claim 4 is characterized by: One end of the matching plate (311) away from the filter plate (38) is hingedly connected to a closing plate (314) via a torsion spring, and the closing plate (314) is initially arranged in an inclined state. The outer surface of one end of the rotating plate (39) away from the filter plate (38) is fixedly connected to a baffle (315), wherein the closing plate (314) rotates to contact the baffle (315).

6. The hierarchical sewage treatment equipment for water ecological restoration according to claim 5 is characterized by: A friction plate (316) is fixedly embedded on the inner surface of the outer frame (1); the friction plate (316) is arranged on the inner side of the second liquid leakage groove (313); the friction plate (316) is arranged as a special-shaped plate, wherein a high friction state is arranged between the friction plate (316) and the closing plate (314).

7. The hierarchical sewage treatment equipment for water area ecological restoration according to claim 6 is characterized by: The recovery mechanism (4) comprises a bottom frame (41), the top of the bottom frame (41) being fixedly connected to the bottom surface of the outer frame (1), a recovery ring (42) being fixedly connected to the top outer surface of the bottom frame (41), a barrier ring (43) being fixedly connected to the upper edge surface of the recovery ring (42), and an adapter ring (44) being fixedly connected to the bottom of the recovery ring (42).

8. The hierarchical sewage treatment equipment for water ecological restoration according to claim 7 is characterized by: One end of the adapter ring (44) away from the recovery ring (42) is fixedly connected to the middle outer surface of the bottom frame (41); a communication groove (45) is provided on the inner side of the adapter ring (44); the communication groove (45) is respectively connected to the inside of the adapter ring (44) and the bottom frame (41); a bottom cover (46) is fixedly connected to the bottom of the bottom frame (41); a liquid outlet hole (47) is provided through the side surface of the bottom cover (46).

9. The hierarchical sewage treatment equipment for water area ecological restoration according to claim 8 is characterized by: The bottom of the rotating rod (36) is fixedly connected to a collar (48), the outer surface of the collar (48) is fixedly connected to a stirring plate (49), wherein three stirring plates (49) are arranged at fixed intervals around the central axis of the collar (48), and the bottom inner surface of the bottom frame (41) is fixedly connected to a fine filter plate (410).

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