A settling tank for processing cooling liquid from an inner ball cage

Abstract

The present application belongs to the technical field of sedimentation treatment tank, and particularly relates to a sedimentation treatment tank for machining cooling liquid of inner spherical cage, which comprises a reciprocating scraping assembly, a reversing scraper assembly, a reciprocating lifting assembly, an aeration pipe lifting assembly, an airflow driving assembly and a container assembly, the reciprocating scraping assembly is symmetrically arranged in the airflow driving assembly, and the reversing scraper assembly is arrayed between the reciprocating scraping assemblies. The present application can drive the pneumatic motor to rotate by using the pressure of the gas itself during gas conveying without losing the gas; the reciprocating scraping assembly and the reciprocating lifting assembly are combined, the reciprocating movement of the reversing scraper assembly and the aeration pipe lifting assembly is driven at the same time when aeration starts; the covering area of the transverse bubbles generated by the present application can be changed by the lateral aeration holes and the lifting movement of the aeration pipe, so that the materials at different depths can be subjected to the mixing action of the transverse bubbles.

Description

Technical Field

[0001] This invention belongs to the technical field of sedimentation treatment tanks, specifically referring to a sedimentation treatment tank for cooling fluid in the inner ball cage processing. Background Technology

[0002] Cutting coolant is required for the machining of parts such as inner ball cages. It is mainly used for lubrication, cooling, and removing chips generated during cutting. After use, the cutting coolant can be reused through purification and regeneration. This is the mainstream practice in the current machining industry to reduce costs, increase efficiency, and achieve green manufacturing.

[0003] The complete purification process consists of three main steps: physical filtration to remove debris and impurities, deep purification through chemical reaction, and final degradation and precipitation separation of organic matter through biological treatment. These steps generally require the use of different equipment.

[0004] The degradation process based on aerobic microorganisms requires aeration to maintain the oxygen content in the water. Although the aeration technology is relatively mature, there is still room for improvement in these devices: A: Even if the aeration pipe is located at the bottom of the pool, there is still a certain height difference between it and the bottom surface of the pool. Therefore, impurities in the sewage are easy to settle at the bottom of the pool. If they are not cleaned for a long time, they will adhere and accumulate, forming a sludge layer that is difficult to clean. B: In addition to maintaining oxygen content, the bubbles generated by aeration can also mix wastewater due to their own movement. However, existing aeration pipes are generally fixed, and the bubbles only rise vertically, so the mixing area that the bubbles can reach is relatively small. Summary of the Invention

[0005] To address the above issues and overcome the shortcomings of existing technologies, this invention provides a sedimentation treatment tank for cooling fluid in internal ball cage processing. This solution proposes a pneumatic motor that can drive rotation using the pressure of the gas itself during transport without gas loss. Combined with a reciprocating scraping assembly and a reciprocating lifting assembly, the reciprocating movement of the reversing scraper assembly and the aeration pipe lifting assembly is driven simultaneously with the start of aeration. Through the lifting and lowering motion of the side-mounted aeration holes and the aeration pipe, the coverage area of ​​the generated transverse bubbles can be changed, thereby ensuring that materials at different depths are mixed by the transverse bubbles.

[0006] In addition, during the reciprocating sliding of the slide bar, the scraper body can automatically change direction under the thrust of the water flow, so that the scraping blade is always in front of the direction of movement.

[0007] The technical solution adopted by the present invention is as follows: The present invention proposes a sedimentation treatment tank for cooling fluid in the inner ball cage processing, including a reciprocating scraping assembly, a reversing scraper assembly, a reciprocating lifting assembly, an aeration pipe lifting assembly, an airflow driving assembly, and a container assembly. The reciprocating scraping assembly is symmetrically arranged in the airflow driving assembly, and the reversing scraper assembly is arranged in an array between the reciprocating scraping assemblies. The reciprocating lifting assembly and the aeration pipe lifting assembly are symmetrically arranged in the airflow drive assembly. The reciprocating lifting assembly is located on the inner wall of the airflow drive assembly, and the aeration pipe lifting assembly is located on the reciprocating lifting assembly. The airflow drive assembly is located in the container assembly.

[0008] Furthermore, the reciprocating scraping assembly includes a transverse reciprocating track, a reciprocating slide bar, and a hinged connecting rod. The transverse reciprocating track is disposed in the airflow drive assembly, the reciprocating slide bar is engaged and slidably disposed in the transverse reciprocating track, and a hinge seat is provided on the reciprocating slide bar. One end of the hinged connecting rod is hinged to the hinge seat.

[0009] The reciprocating slide bar slides back and forth along the transverse reciprocating track, and can reciprocate to scrape the bottom of the aerobic tank through the reversing scraper assembly, preventing sediment from adhering to the bottom of the aerobic tank for a long time, thereby keeping the aerobic tank clean and extending the time interval for shutdown maintenance and cleaning.

[0010] Furthermore, the reversing scraper assembly includes a scraper shaft and a scraper body. The scraper shaft array is arranged in several groups. The two ends of the scraper shaft are respectively fixed to the reciprocating slide bar. The scraper body is composed of a tail wing, a central ring, and a scraping blade. The central ring is rotatably mounted on the scraper shaft.

[0011] The area of ​​the tail fin is significantly larger than that of the scraping blade. Therefore, during the reciprocating sliding of the slide bar, the scraper body can automatically change direction under the thrust of the water flow, thus ensuring that the scraping blade is always in front of the direction of movement.

[0012] The central ring is made of elastic plastic, which not only ensures its scraping effect on the bottom of the aerobic tank, but also allows the scraper body to change its tilt direction when the direction of movement changes.

[0013] Furthermore, the reciprocating lifting assembly includes a longitudinal reciprocating track, a lead screw support, and a reciprocating lead screw. The longitudinal reciprocating track is disposed in the airflow drive assembly, the lead screw support is fixed to both ends of the longitudinal reciprocating track, and the reciprocating lead screw is rotatably disposed in the lead screw support.

[0014] The reciprocating screw rotates continuously under the drive of the pneumatic motor. Since the reciprocating screw is equipped with a bidirectional thread that mates with the reciprocating screw block, the reciprocating screw block can move up and down along the longitudinal reciprocating track while the reciprocating screw rotates continuously in one direction.

[0015] Furthermore, the aeration pipe lifting assembly includes a reciprocating screw block, which is engaged and slidably disposed in a longitudinal reciprocating track. The reciprocating screw block and the reciprocating lead screw are connected by a threaded transmission. The two sides of the reciprocating screw block are symmetrically provided with hinge seats two, and the other end of the hinge connecting rod is hinged to the hinge seat two.

[0016] Preferably, the aeration pipe lifting assembly further includes a lifting bracket and an aeration pipe. The lifting bracket is fixed to the reciprocating screw block, the aeration pipe array is arranged on the lifting bracket, and the side array of the aeration pipe is provided with side aeration holes.

[0017] The reciprocating screw drives the aeration pipe to move up and down repeatedly. By changing the height of the aeration pipe, the coverage area of ​​the transverse bubbles it generates can be changed, so that materials at different depths can be mixed by the transverse bubbles.

[0018] Furthermore, the airflow drive assembly includes an aerobic tank, the transverse reciprocating track is fixed to the inner wall of the aerobic tank, and the longitudinal reciprocating track is fixed to the inner wall of the aerobic tank.

[0019] Preferably, the airflow drive assembly further includes a pneumatic motor, which is fixed to the inner wall of the aerobic tank. The output shaft of the pneumatic motor is connected to a reciprocating lead screw, and the pneumatic motor and the aeration pipe are connected by a flexible hose.

[0020] The pipe that supplies air to the aeration pipe first passes through a pneumatic motor, which can drive the pneumatic motor to rotate using the pressure of the gas itself during transportation without losing gas. This simplifies the structure and operation steps, and can also automatically start the reciprocating scraping component and the reciprocating lifting component when aeration begins. At the same time, it can achieve mixing at different depths and cleaning of sediment at the bottom of the aerobic tank.

[0021] Furthermore, the container assembly includes a container body, a sedimentation tank, and a container cover, wherein the aerobic tank is located in the container body, the sedimentation tank is located in the container body, and the container cover is located on the container body.

[0022] The beneficial effects achieved by the present invention using the above structure are as follows: (1) The reciprocating slide bar slides back and forth along the transverse reciprocating track, and can scrape the bottom of the aerobic tank back and forth through the reversing scraper assembly, so as to avoid the sediment from adhering to the bottom of the aerobic tank for a long time, thereby keeping the aerobic tank clean and extending the time interval for shutdown maintenance and cleaning.

[0023] (2) The area of ​​the tail fin is significantly larger than that of the scraping blade. Therefore, during the reciprocating sliding of the slide bar, the scraper body can automatically change direction under the thrust of the water flow, so that the scraping blade is always in front of the direction of movement.

[0024] (3) The central ring is made of elastic plastic material, which can not only ensure its scraping effect on the bottom of the aerobic tank, but also allow the scraper body to change its tilt direction when the direction of movement changes.

[0025] (4) The reciprocating screw rotates continuously under the drive of the pneumatic motor. Since the reciprocating screw is provided with a bidirectional thread that cooperates with the reciprocating screw block, the reciprocating screw block can move up and down along the longitudinal reciprocating track while the reciprocating screw rotates continuously in one direction.

[0026] (5) The reciprocating screw drives the aeration pipe to move up and down repeatedly. By changing the height of the aeration pipe, the coverage area of ​​the transverse bubbles generated by the pipe can be changed, so that materials at different depths can be mixed by the transverse bubbles.

[0027] (6) The pipe that supplies air to the aeration pipe first passes through the pneumatic motor, which can drive the pneumatic motor to rotate by the pressure of the gas itself during the transport without losing gas; it can simplify the structure and operation steps, and can also automatically start the reciprocating scraping component and the reciprocating lifting component when aeration starts; at the same time, it can achieve mixing at different depths and cleaning of sediment at the bottom of the aerobic tank. Attached Figure Description

[0028] Figure 1 This is a perspective view of a sedimentation treatment tank for cooling fluid in the internal ball cage processing proposed in this invention. Figure 2 This is a front view of a sedimentation treatment tank for cooling fluid in the internal ball cage processing according to the present invention; Figure 3 for Figure 2 A cross-sectional view along section line AA; Figure 4 for Figure 3 A cross-sectional view along the cutting line BB; Figure 5 This is an exploded structural diagram of a sedimentation treatment tank for cooling fluid in the internal ball cage processing proposed in this invention. Figure 6 for Figure 3 A magnified view of a section at point I; Figure 7 for Figure 4 Enlarged view of a section at point II; Figure 8 for Figure 5 Enlarged view of a section at point III; Figure 9 for Figure 5 A magnified view of a section at point IV.

[0029] Among them, 1. Reciprocating scraping assembly, 2. Reversing scraper assembly, 3. Reciprocating lifting assembly, 4. Aeration pipe lifting assembly, 5. Airflow drive assembly, 6. Container assembly, 11. Transverse reciprocating track, 12. Reciprocating slide bar, 13. Hinge connecting rod, 21. Scraper shaft, 22. Scraper body, 31. Longitudinal reciprocating track, 32. Screw support, 33. Reciprocating screw, 41. Reciprocating screw block, 42. Lifting support, 43. Aeration pipe, 51. Aerobic tank, 52. Pneumatic motor, 61. Container body, 62. Sedimentation tank, 63. Container cover, 121. Hinge seat one, 221. Tail fin, 222. Central ring, 223. Scraping blade, 411. Hinge seat two, 431. Side aeration hole.

[0030] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0032] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and 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. Therefore, they should not be construed as limitations on this invention.

[0033] like Figures 1-9 As shown, the present invention proposes a sedimentation treatment tank for cooling fluid in the internal ball cage processing, including a reciprocating scraping assembly 1, a reversing scraper assembly 2, a reciprocating lifting assembly 3, an aeration pipe lifting assembly 4, an airflow driving assembly 5, and a container assembly 6. The reciprocating scraping assembly 1 is symmetrically arranged in the airflow driving assembly 5, and the reversing scraper assembly 2 is arranged in an array between the reciprocating scraping assemblies 1. The reciprocating lifting assembly 3 and the aeration pipe lifting assembly 4 are symmetrically arranged in the airflow drive assembly 5. The reciprocating lifting assembly 3 is located on the inner wall of the airflow drive assembly 5, and the aeration pipe lifting assembly 4 is located on the reciprocating lifting assembly 3. The airflow drive assembly 5 is located in the container assembly 6.

[0034] The reciprocating scraping assembly 1 includes a transverse reciprocating track 11, a reciprocating slide bar 12, and a hinged connecting rod 13. The transverse reciprocating track 11 is disposed in the airflow drive assembly 5. The reciprocating slide bar 12 is engaged and slidably disposed in the transverse reciprocating track 11. A hinge seat 121 is provided on the reciprocating slide bar 12. One end of the hinged connecting rod 13 is hinged to the hinge seat 121.

[0035] The reciprocating slide bar 12 slides back and forth along the transverse reciprocating track 11, and can reciprocate to scrape the bottom of the aerobic tank 51 through the reversing scraper assembly 2, so as to prevent the sediment from adhering to the bottom of the aerobic tank 51 for a long time, thereby keeping the aerobic tank 51 clean and extending the time interval for shutdown maintenance and cleaning.

[0036] The reversing scraper assembly 2 includes a scraper shaft 21 and a scraper body 22. Several sets of scraper shafts 21 are arranged in an array. The two ends of the scraper shafts 21 are respectively fixed to the reciprocating slide bar 12. The scraper body 22 is composed of a tail wing 221, a central ring 222 and a scraping blade 223. The central ring 222 is rotatably mounted on the scraper shaft 21.

[0037] The area of ​​the tail fin 221 is significantly larger than the area of ​​the scraping blade 223. Therefore, during the reciprocating sliding of the reciprocating slide bar 12, the scraper body 22 can automatically change direction under the thrust of the water flow, so that the scraping blade 223 is always in front of the direction of movement.

[0038] The central ring 222 is made of elastic plastic, which not only ensures its scraping effect on the bottom of the aerobic tank 51, but also allows the scraper body 22 to change its tilt direction when the direction of movement changes.

[0039] The reciprocating lifting assembly 3 includes a longitudinal reciprocating track 31, a lead screw support 32, and a reciprocating lead screw 33. The longitudinal reciprocating track 31 is located in the airflow drive assembly 5. The lead screw support 32 is fixed to both ends of the longitudinal reciprocating track 31, and the reciprocating lead screw 33 is rotatably located in the lead screw support 32.

[0040] The reciprocating screw 33 rotates continuously under the drive of the pneumatic motor 52. Since the reciprocating screw 33 is provided with a bidirectional thread that cooperates with the reciprocating screw block 41, the reciprocating screw block 41 can reciprocate up and down along the longitudinal reciprocating track 31 when the reciprocating screw 33 rotates continuously in one direction.

[0041] The aeration pipe lifting assembly 4 includes a reciprocating screw block 41, which is engaged and slidably disposed in the longitudinal reciprocating track 31. The reciprocating screw block 41 and the reciprocating lead screw 33 are connected by a threaded transmission. The two sides of the reciprocating screw block 41 are symmetrically provided with hinge seats 411, and the other end of the hinge connecting rod 13 is hinged to the hinge seat 411.

[0042] The aeration pipe lifting assembly 4 also includes a lifting bracket 42 and an aeration pipe 43. The lifting bracket 42 is fixed to the reciprocating screw block 41, and the aeration pipe 43 is arranged in an array on the lifting bracket 42. The side array of the aeration pipe 43 is provided with side aeration holes 431.

[0043] The reciprocating screw block 41 drives the aeration pipe 43 to move up and down repeatedly. By changing the height of the aeration pipe 43, the coverage area of ​​the transverse bubbles it generates can be changed, so that materials at different depths can be mixed by the transverse bubbles.

[0044] The airflow drive assembly 5 includes an aerobic tank 51, a transverse reciprocating track 11 fixed to the inner wall of the aerobic tank 51, and a longitudinal reciprocating track 31 fixed to the inner wall of the aerobic tank 51.

[0045] The airflow drive assembly 5 also includes a pneumatic motor 52, which is fixed to the inner wall of the aerobic tank 51. The output shaft of the pneumatic motor 52 is connected to the reciprocating screw 33, and the pneumatic motor 52 and the aeration pipe 43 are connected by a flexible hose.

[0046] The pipe that supplies air to the aeration pipe 43 first passes through the pneumatic motor 52, which can drive the pneumatic motor 52 to rotate by the pressure of the gas itself during transportation without losing gas. This simplifies the structure and operation steps, and can also automatically start the reciprocating scraping component 1 and the reciprocating lifting component 3 when aeration begins. At the same time, it can achieve mixing at different depths and cleaning of sediment at the bottom of the aerobic tank 51.

[0047] The container assembly 6 includes a container body 61, a sedimentation tank 62, and a container cover 63. An aerobic tank 51 is located in the container body 61, a sedimentation tank 62 is located in the container body 61, and a container cover 63 is located on the container body 61.

[0048] In practical use, the user first supplies the wastewater to be treated into the aerobic tank 51 through a water pump, and adds the organic matter or inorganic agents required for decomposition. During the process of aerobic microorganisms decomposing the sludge, continuous aeration is required through the aeration pipe 43. On the one hand, this can maintain the oxygen content in the wastewater, and on the other hand, the horizontal and vertical movement of the bubbles can mix and stir the wastewater, which is conducive to improving the decomposition reaction rate.

[0049] The gas used for aeration is transported to the aeration pipe 43 through a pipeline. Before reaching the aeration pipe 43, it passes through the pneumatic motor 52 and drives the reciprocating screw 33 to rotate continuously and slowly through the output shaft of the pneumatic motor 52. When the reciprocating screw 33 rotates, since the reciprocating screw 33 is provided with a bidirectional thread that mates with the reciprocating screw block 41, the reciprocating screw block 41 can reciprocate up and down along the longitudinal reciprocating track 31 while the reciprocating screw 33 continues to rotate in one direction; through the linkage of the hinged connecting rod 13, the reciprocating slide bar 12 will simultaneously reciprocate under the guidance of the transverse reciprocating track 11. When the reciprocating slide bar 12 drives the reversing scraper assembly 2 to move, since the area of ​​the tail fin 221 is much larger than the area of ​​the scraping blade 223, the water flow thrust on the tail fin 221 is also much greater than the water flow thrust on the scraping blade 223. Therefore, as the direction of movement of the reciprocating slide bar 12 changes, the scraper body 22 will also automatically change its tilt direction, so that the scraping blade 223 is always in front of the direction of movement. The rotation angle of the scraper body 22 on the scraper shaft 21 is limited, so the scraping blade 223 will not completely leave the bottom of the aerobic tank 51.

[0050] When the reciprocating screw block 41 moves up and down, it will drive the aeration pipe 43 to move up and down synchronously. Since the bubbles will first move laterally a certain distance after being discharged from the side aeration hole 431, and then rise vertically, the lateral mixing area of ​​the bubbles is limited to the vicinity of the height of the aeration pipe 43. By reciprocating up and down the aeration pipe 43, the depth range of the lateral mixing area of ​​the bubbles can be greatly increased, and the fullness of mixing can be improved.

[0051] The decomposed wastewater is pumped to sedimentation tank 62 for settling. The water in the upper layer that meets the discharge standards can be discharged, while the sediment in the bottom layer is collected and treated accordingly.

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

[0053] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A sedimentation treatment tank for cooling fluid in the internal ball cage machining process, characterized in that: include: The reciprocating scraping assembly (1), the reversing scraper assembly (2), and the airflow drive assembly (5) are arranged symmetrically in the airflow drive assembly (5), and the reversing scraper assembly (2) is arranged in an array between the reciprocating scraping assemblies (1). It also includes a reciprocating lifting assembly (3) and an aeration pipe lifting assembly (4), the reciprocating lifting assembly (3) and the aeration pipe lifting assembly (4) are symmetrically arranged in the airflow drive assembly (5), the reciprocating lifting assembly (3) is arranged on the inner wall of the airflow drive assembly (5), and the aeration pipe lifting assembly (4) is arranged on the reciprocating lifting assembly (3). The container assembly (6) contains the airflow drive assembly (5).

2. The sedimentation treatment tank for cooling fluid in the internal ball cage machining according to claim 1, characterized in that: The reciprocating scraping assembly (1) includes a transverse reciprocating track (11), a reciprocating slide bar (12), and a hinged connecting rod (13). The transverse reciprocating track (11) is located in the airflow drive assembly (5). The reciprocating slide bar (12) is engaged and slidably located in the transverse reciprocating track (11). The reciprocating slide bar (12) is provided with a hinge seat (121). One end of the hinged connecting rod (13) is hinged to the hinge seat (121).

3. The sedimentation treatment tank for cooling fluid in the internal ball cage machining according to claim 2, characterized in that: The reversing scraper assembly (2) includes a scraper shaft (21) and a scraper body (22). The scraper shafts (21) are arranged in several groups. The two ends of the scraper shafts (21) are respectively fixed to the reciprocating slide bar (12). The scraper body (22) is composed of a tail wing (221), a central ring (222) and a scraping blade (223). The central ring (222) is rotatably mounted on the scraper shaft (21).

4. The sedimentation treatment tank for cooling fluid in the internal ball cage machining according to claim 3, characterized in that: The reciprocating lifting assembly (3) includes a longitudinal reciprocating track (31), a lead screw support (32) and a reciprocating lead screw (33). The longitudinal reciprocating track (31) is located in the airflow drive assembly (5). The lead screw support (32) is fixed to both ends of the longitudinal reciprocating track (31). The reciprocating lead screw (33) is rotatably located in the lead screw support (32).

5. The sedimentation treatment tank for cooling fluid in the internal ball cage machining according to claim 4, characterized in that: The aeration pipe lifting assembly (4) includes a reciprocating screw block (41), which is engaged and slidably disposed in the longitudinal reciprocating track (31). The reciprocating screw block (41) and the reciprocating lead screw (33) are threadedly driven. The two sides of the reciprocating screw block (41) are symmetrically provided with hinge seats (411), and the other end of the hinge connecting rod (13) is hinged to the hinge seat (411).

6. The sedimentation treatment tank for cooling fluid in the internal ball cage machining according to claim 5, characterized in that: The aeration pipe lifting assembly (4) also includes a lifting bracket (42) and an aeration pipe (43). The lifting bracket (42) is fixed to the reciprocating screw block (41). The aeration pipe (43) is arranged in an array on the lifting bracket (42). The side of the aeration pipe (43) is provided with side aeration holes (431).

7. The sedimentation treatment tank for cooling fluid in the internal ball cage machining process according to claim 6, characterized in that: The airflow drive assembly (5) includes an aerobic tank (51), the transverse reciprocating track (11) is fixed to the inner wall of the aerobic tank (51), and the longitudinal reciprocating track (31) is fixed to the inner wall of the aerobic tank (51).

8. The sedimentation treatment tank for cooling fluid in the internal ball cage machining according to claim 7, characterized in that: The airflow drive assembly (5) also includes a pneumatic motor (52), which is fixed to the inner wall of the aerobic tank (51). The output shaft of the pneumatic motor (52) is connected to the reciprocating screw (33), and the pneumatic motor (52) and the aeration pipe (43) are connected by a flexible hose.

9. The sedimentation treatment tank for cooling fluid in the internal ball cage machining process according to claim 8, characterized in that: The container assembly (6) includes a container body (61), a sedimentation tank (62) and a container cover (63). The aerobic tank (51) is located in the container body (61), the sedimentation tank (62) is located in the container body (61), and the container cover (63) is located on the container body (61).

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