A scalable anti-clogging subsurface flow wetland system

Abstract

The application discloses a telescopic anti-blocking subsurface flow wetland system and relates to the field of ecological environmental protection, which comprises a wetland pool body and a filler device, wherein the filler device comprises a filler frame, a ventilation mechanism and elastic fillers, the filler frame is provided with a plurality of filler frames which are slidingly inserted into the wetland pool body, the filler frames are arranged along the length direction of the wetland pool body, the ventilation mechanism is installed in the filler frame and is communicated with an aeration device at one end and is connected with a plurality of groups of elastic fillers at the other end, the elastic fillers can be expanded and contracted through the ventilation mechanism, the expansion can block the inside of the filler frame and realize the filtration of sewage, and the contraction can make large-particle sundries fall off, the aeration device fills air into the elastic fillers through the ventilation mechanism to realize the expansion of the elastic fillers, and then the elastic fillers filter the sewage, when the elastic fillers need to be cleaned, the aeration device makes the elastic fillers deflate and contract through the ventilation mechanism, and the large-particle sundries mixed between the elastic fillers can fall off, so that the cleaning is convenient and fast.

Description

Technical Field

[0001] This invention relates to the field of ecological and environmental protection, and in particular to a retractable, anti-clogging subsurface flow wetland system. Background Technology

[0002] Subsurface flow constructed wetlands remove pollutants from wastewater through the combined action of substrates, microorganisms, and plants. Pollutants in the wastewater are degraded and removed through contact with the biofilm formed on the surface of the packing material. However, the extracellular polymers produced by microorganisms within the biofilm continuously attach and proliferate on the packing surface, and the interception of suspended solids in the influent, along with other factors, reduce the porosity between the packing materials, gradually leading to wetland clogging. Clogging causes uneven water flow distribution and reduced purification efficiency throughout the subsurface flow wetland system. Clogging treatment and packing material replacement are among the challenges in the management and maintenance of subsurface flow wetlands.

[0003] Existing subsurface flow wetland fillers mainly consist of granular solid materials with large specific surface areas and high porosity, such as ceramsite, gravel, zeolite, and steel slag. These filler particles are piled and spread within the subsurface flow wetland pool, resulting in a relatively compact and stable spatial relationship. This makes filler replacement difficult. Therefore, subsurface flow wetland systems are equipped with backwashing devices to periodically clean the materials between the filler particles, thereby restoring the wetland system's purification efficiency and extending its service life.

[0004] To complement the backwashing system and improve the recovery rate, this patent proposes a retractable, anti-clogging subsurface flow wetland system. Summary of the Invention

[0005] Technical problems to be solved:

[0006] To address the shortcomings of existing technologies, this invention provides a scalable, anti-clogging subsurface flow wetland system. This system solves the problem mentioned in the background section where existing subsurface flow wetland fillers are mainly composed of granular solid materials with large specific surface areas and high porosity, such as ceramsite, gravel, zeolite, and steel slag. These filler particles are piled and spread within the subsurface flow wetland pool, resulting in a relatively tight and stable spatial relationship due to mutual compression. This also leads to difficulties in replacing the filler.

[0007] Technical solution:

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A retractable, anti-clogging subsurface flow wetland system includes a wetland pool and a packing device. The packing device includes packing frames, an aeration mechanism, and elastic packing material. Several packing frames are slidably inserted into the wetland pool and arranged along the length of the pool. The aeration mechanism is installed inside the packing frames, with one end connected to an aeration device and the other end connected to several sets of elastic packing material. The elastic packing material can expand and contract through the aeration mechanism. Expansion seals the interior of the packing frames, filtering wastewater, while contraction causes large particles to detach.

[0010] In one possible implementation, a sludge collection trough is provided at the bottom of the wetland pool, the sludge collection trough is arranged along the length of the wetland pool, and is used to collect debris that falls off the elastic packing material; several backwash pipes are provided above the sludge collection trough, the backwash pipes are arranged along the length of the wetland pool, and the backwash pipes use nozzles to wash away the fine debris attached to the elastic packing material, which then flows out through the sludge collection trough.

[0011] In one possible implementation, the ventilation mechanism includes a main ventilation pipe, a connecting pipe, and branch ventilation pipes, wherein: one end of the main ventilation pipe is connected to the inflation device, and the other end is connected to the branch ventilation pipes through the connecting pipe; the number of branch ventilation pipes is the same as the number of elastic packing groups, the branch ventilation pipes are vertically arranged and distributed along the length of the packing frame, and several groups of elastic packing are evenly connected to the branch ventilation pipes to realize the expansion and contraction of the elastic packing.

[0012] In one possible implementation, the packing frame includes a fixed frame, limiting sliders, locking holes, and a flushing net, wherein: the fixed frame is inserted into the wetland pool body and is used to support the aeration mechanism and the elastic packing; the limiting sliders are symmetrically installed on both sides of the fixed frame and slidably connected to the wetland pool body, the limiting sliders are used to restrict the sliding of the fixed frame while maintaining stability; a plurality of locking holes are provided and evenly distributed on the limiting sliders; the flushing net is fixedly installed at the bottom end of the fixed frame.

[0013] In one possible implementation, the wetland pool body is provided with a lifting groove, a limiting groove, a driving cavity, and a locking cavity, wherein: the lifting groove corresponds to and matches both sides of the fixed frame, and the lifting groove is for the fixed frame to be inserted; the limiting groove corresponds to and matches the limiting slider, and the limiting groove is for the limiting slider to slide, and the limiting groove communicates with the lifting groove; the driving cavity is opened on both sides of the wetland pool body and communicates with the locking cavity, and the locking cavity is close to the packing frame; the driving cavity and the locking cavity are provided with a driving mechanism and a locking mechanism.

[0014] In one possible implementation, the drive mechanism includes a drive shaft, a turntable, a drive wheel, a driven wheel, a driven shaft, and a lead screw, wherein: the drive shaft is rotatably connected to the wetland pool body and extends into the drive cavity; the turntable is fixedly mounted to the end of the drive shaft located outside the wetland pool body and is used to drive the drive shaft; the drive wheel is fixedly mounted to the end of the drive shaft located within the drive cavity and is used to drive the driven wheel; the driven wheel is rotatably connected to the drive cavity via the driven shaft and meshes with the drive wheel; the lead screw is fixedly mounted on the driven shaft and extends into the locking cavity, and the lead screw is used to drive the locking mechanism.

[0015] In one possible implementation, the locking mechanism includes a lead screw seat, a push plate, a reinforcing mechanism, and a locking block, wherein: the lead screw seat is fixedly mounted on the push plate and threadedly connected to the lead screw; the push plate is slidably connected to the locking cavity and is used to drive the locking block; the reinforcing mechanism is installed between the push plate and the inner wall of the locking cavity and is used to drive the push plate; the locking block is slidably connected to the locking cavity and extends out of the locking cavity, the locking block corresponds to and matches the locking hole, and the locking block fixes the packing frame to the wetland pool body by inserting into the locking hole.

[0016] In one possible implementation, the driving mechanism further includes a screw, a fixed disc, and a base, wherein: the screw is threadedly connected to the turntable; the fixed disc is fixedly installed at the end of the screw and is used to drive the screw; the base is fixedly installed on the wetland pool body and is located directly below the screw; the fixed disc drives the screw to insert into the base to fix the turntable, thereby achieving the purpose of fixing the packing frame to the wetland pool body.

[0017] In one possible implementation, the reinforcing mechanism may be a spring and a damper to improve the firmness of the lock block inserted into the locking hole.

[0018] Beneficial effects:

[0019] In this invention, the air-inflating device inflates the elastic packing material through a ventilation mechanism to expand the elastic packing material. Then, the elastic packing material inside the packing frame is sealed to filter sewage. The air-inflating device can control the amount of air inflated into the elastic packing material and control the size of the elastic packing material to meet different working conditions. When the elastic packing material needs to be cleaned, the air-inflating device deflates and contracts the elastic packing material through the ventilation mechanism, and large particles of debris trapped between the elastic packing material will fall off, making cleaning convenient and quick.

[0020] In this invention, after large particles of debris are removed, the backwash pipe washes away the fine debris attached to the elastic packing through the nozzle, and the debris flows out through the mud collection trough. After the elastic packing shrinks, the gaps increase, and the nozzle can easily and quickly clean the elastic packing, thus improving the backwashing efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the packing device in this invention;

[0023] Figure 3 This is a schematic diagram of the structure of the wetland pool in this invention;

[0024] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0025] Figure 5 for Figure 3 Enlarged view of point B in the middle.

[0026] Legend: 1. Wetland pool body; 11. Lifting trough; 12. Limiting trough; 13. Drive chamber; 14. Locking chamber; 2. Packing frame; 21. Fixing frame; 22. Limiting slider; 23. Locking hole; 24. Flushing net; 3. Ventilation mechanism; 31. Main ventilation pipe; 32. Connecting pipe; 33. Branch ventilation pipe; 4. Elastic packing; 5. Backwash pipe; 51. Nozzle; 6. Sludge collection trough; 7. Drive mechanism; 71. Drive shaft; 72. Turntable; 73. Drive wheel; 74. Driven wheel; 75. Driven shaft; 76. Lead screw; 77. Screw; 78. Fixing plate; 79. Base; 8. Locking mechanism; 81. Lead screw seat; 82. Push plate; 83. Reinforcing mechanism; 84. Locking block. Detailed Implementation

[0027] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the invention. However, it will be apparent to those skilled in the art that the invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid obscuring the invention.

[0028] A scalable, clog-resistant subsurface flow wetland system; please refer to [link / reference]. Figures 1-5The system includes a wetland pool body 1 and a packing device. The packing device includes a packing frame 2, an aeration mechanism 3, and elastic packing 4. Several packing frames 2 are provided and are slidably inserted into the wetland pool body 1. The several packing frames 2 are arranged along the length of the wetland pool body 1. The aeration mechanism 3 is installed inside the packing frame 2, and one end is connected to an aeration device, while the other end is connected to several sets of elastic packing 4. The elastic packing 4 can expand and contract through the aeration mechanism 3. Expansion will block the inside of the packing frame 2 to filter the sewage, and contraction will cause large particles of debris to fall off.

[0029] Through the above technical solution, the air-filling device of the present invention inflates the elastic packing 4 with air through the air-venting mechanism 3 to expand the elastic packing 4, and then seals the elastic packing 4 inside the packing frame 2 to filter the sewage; the air-filling device can control the amount of air inflated into the elastic packing 4 and control the size of the elastic packing 4 to meet different working conditions; when it is necessary to clean the elastic packing 4, the air-filling device deflates and contracts the elastic packing 4 through the air-venting mechanism 3, and large particles of debris trapped between the elastic packing 4 will fall off, making cleaning convenient and quick.

[0030] In some examples, refer to Figure 1-5 As shown, a mud collection trough 6 is provided at the bottom of the wetland pool 1. The mud collection trough 6 is arranged along the length of the wetland pool 1 and is used to collect debris that falls off the elastic packing 4. Several backwash pipes 5 are provided above the mud collection trough 6. The backwash pipes 5 are arranged along the length of the wetland pool 1. The backwash pipes 5 use nozzles 51 to wash away the small debris attached to the elastic packing 4 and flow out through the mud collection trough 6.

[0031] Through the above technical solution, after large particles of debris fall off, the backwash pipe 5 washes away the fine debris attached to the elastic packing 4 through the nozzle 51, and flows out through the mud collection tank 6; after the elastic packing 4 shrinks, the gaps increase, and the nozzle 51 can easily and quickly clean the elastic packing 4, thereby improving the backwashing efficiency.

[0032] In some examples, refer to Figure 1-5 As shown, the packing frame 2 includes a fixed frame 21, a limiting slider 22, a locking hole 23, and a flushing net 24. The fixed frame 21 is inserted into the wetland pool body 1 and is used to support the ventilation mechanism 3 and the elastic packing 4. The limiting slider 22 is symmetrically installed on both sides of the fixed frame 21 and is slidably connected to the wetland pool body 1. The limiting slider 22 is used to limit the sliding of the fixed frame 21 and maintain stability. Several locking holes 23 are provided and evenly opened on the limiting slider 22. The flushing net 24 is fixedly installed at the bottom end of the fixed frame 21.

[0033] In some examples, refer to Figure 1-5As shown, the wetland pool body 1 is provided with a lifting groove 11, a limiting groove 12, a driving cavity 13, and a locking cavity 14. The lifting groove 11 corresponds to and matches the two sides of the fixed frame 21, and the lifting groove 11 is for the fixed frame 21 to be inserted. The limiting groove 12 corresponds to and matches the limiting slider 22, and the limiting groove 12 is for the limiting slider 22 to slide. The limiting groove 12 is connected to the lifting groove 11. The driving cavity 13 is opened on both sides of the wetland pool body 1 and is connected to the locking cavity 14. The locking cavity 14 is close to the packing frame 2. The driving cavity 13 and the locking cavity 14 are provided with a driving mechanism 7 and a locking mechanism 8.

[0034] Through the above technical solution, the fixed frame 21 is inserted into the lifting groove 11, which facilitates the replacement of the fixed frame 21; the setting of the limiting slider 22 sliding along the limiting groove 12 can not only limit the sliding range of the fixed frame 21, but also maintain the stability of the fixed frame 21 during the sliding process; the setting of the flushing net 24 makes it convenient for the nozzle 51 to flush the small debris attached to the elastic filler 4, and the debris flows out through the mud collection trough 6; the driving mechanism 7 and the locking mechanism 8 in the driving cavity 13 and the locking cavity 14 can firmly fix the fixed frame 21 to the wetland pool body 1.

[0035] In some examples, refer to Figure 1-5 As shown, the drive mechanism 7 includes a drive shaft 71, a turntable 72, a drive wheel 73, a driven wheel 74, a driven shaft 75, and a lead screw 76. Specifically: the drive shaft 71 is rotatably connected to the wetland pool body 1 and extends into the drive cavity 13; the turntable 72 is fixedly installed to the end of the drive shaft 71 located outside the wetland pool body 1 and is used to drive the drive shaft 71; the drive wheel 73 is fixedly installed to the end of the drive shaft 71 located within the drive cavity 13 and is used to drive the driven wheel 74; the driven wheel 74 is rotatably connected to the drive cavity 13 via the driven shaft 75 and is meshed with the drive wheel 73; the lead screw 76 is fixedly installed on the driven shaft 75 and extends into the locking cavity 14, and the lead screw 76 is used to drive the locking mechanism 8.

[0036] Through the above technical solution, after the fixed frame 21 is inserted into the lifting groove 11, the turntable 72 drives the drive shaft 71 to rotate, thereby driving the drive wheel 73 to rotate. The drive wheel 73 drives the driven shaft 75 to rotate through the meshing driven wheel 74, thereby driving the lead screw 76 to rotate. The lead screw 76 drives the locking mechanism 8 to fix the packing frame 2 to the wetland pool body 1, so that the packing frame 2 will not loosen or shift after being connected to the wetland pool body 1, which would affect the filtration of sewage by the packing device. The diameter of the drive wheel 73 is larger than that of the driven wheel 74, so the turntable 72 can be driven with very little force, thus achieving the purpose of saving effort.

[0037] In some examples, refer to Figure 1-5As shown, the locking mechanism 8 includes a lead screw seat 81, a push plate 82, a reinforcing mechanism 83, and a locking block 84. The lead screw seat 81 is fixedly mounted on the push plate 82 and threadedly connected to the lead screw 76. The push plate 82 is slidably connected to the locking cavity 14 and is used to drive the locking block 84. The reinforcing mechanism 83 is installed between the push plate 82 and the inner wall of the locking cavity 14 and is used to drive the push plate 82. The locking block 84 is slidably connected to the locking cavity 14 and extends out of the locking cavity 14. The locking block 84 corresponds to and matches the locking hole 23. The locking block 84 fixes the packing frame 2 to the wetland pool body 1 by inserting into the locking hole 23.

[0038] In some examples, refer to Figure 1-5 As shown, the reinforcing mechanism 83 can be a spring and a damper to improve the firmness of the lock block 84 when inserted into the locking hole 23.

[0039] Through the above technical solution, in this invention, the rotation of the lead screw 76 can drive the push plate 82 to slide along the locking cavity 14 through the threaded lead screw seat 81. The push plate 82 drives the locking block 84 to move along the locking cavity 14 towards the locking hole 23 until it is fully inserted into the locking hole 23. At this time, the locking mechanism 8 fixes the packing frame 2 to the wetland pool body 1, preventing the packing frame 2 from becoming loose or shifting after being connected to the wetland pool body 1, thus affecting the filtration of sewage by the packing device. The setting of the strengthening mechanism 83 increases the driving force of the locking block 84 to insert into the locking hole 23, further improving the degree to which the packing frame 2 is fixed to the wetland pool body 1.

[0040] In some examples, refer to Figure 1-5 As shown, the drive mechanism 7 also includes a screw 77, a fixed plate 78, and a base 79, wherein: the screw 77 is threadedly connected to the turntable 72; the fixed plate 78 is fixedly installed at the end of the screw 77 and is used to drive the screw 77; the base 79 is fixedly installed on the wetland pool body 1 and is located directly below the screw 77; the fixed plate 78 drives the screw 77 to insert into the base 79 to fix the turntable 72, so as to achieve the purpose of fixing the packing frame 2 to the wetland pool body 1.

[0041] Through the above technical solution, after the locking block 84 is inserted into the locking hole 23, the screw 77 is driven by the fixed plate 78 to be spirally inserted into the base 79, and the turntable 72 is fixed to the wetland pool body 1. The driving mechanism 7 is further fixed to prevent the locking block 84 from falling out of the locking hole 23, and the degree of fixing the packing frame 2 to the wetland pool body 1 is further improved.

[0042] In some examples, refer to Figure 1-5As shown, the ventilation mechanism 3 includes a main ventilation pipe 31, a connecting pipe 32, and ventilation branch pipes 33. One end of the main ventilation pipe 31 is connected to the inflation device, and the other end is connected to the ventilation branch pipes 33 through the connecting pipe 32. The number of ventilation branch pipes 33 is the same as the number of elastic packing 4 groups. The ventilation branch pipes 33 are vertically arranged and distributed along the length of the packing frame 2. Several groups of elastic packing 4 are evenly connected to the ventilation branch pipes 33 to realize the expansion and contraction of the elastic packing 4.

[0043] Through the above technical solution, the elastic filler 4 is lightweight and can be arranged with the frame, making it easy to replace; the ventilation main pipe 31 is connected to the ventilation branch pipe 33 through the connecting pipe 32, which can realize the synchronous expansion and contraction of several sets of elastic fillers 4, thereby improving efficiency.

[0044] The working principle of this invention is as follows: After the fixed frame 21 is inserted into the lifting groove 11, the turntable 72 is rotated first. The turntable 72 drives the drive shaft 71 to rotate, thereby driving the drive wheel 73 to rotate. The drive wheel 73 drives the driven shaft 75 to rotate through the meshing driven wheel 74, thereby driving the lead screw 76 to rotate. The lead screw 76 drives the push plate 82 to slide along the locking cavity 14 through the threaded lead screw seat 81. The push plate 82 drives the locking block 84 to move along the locking cavity 14 towards the locking hole 23 until it is fully inserted into the locking hole 23. Then, the fixed plate 78 is driven to rotate. The fixed plate 78 drives the screw 77 to spirally insert into the base 79, fixing the turntable 72 onto the wetland pool body 1. At this time, the packing device is firmly fixed onto the wetland pool body 1.

[0045] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A retractable, anti-clogging subsurface flow wetland system, comprising a wetland pool (1) and a packing device, characterized in that: The packing device includes a packing frame (2), a ventilation mechanism (3), and elastic packing (4), wherein: The filler frame (2) is provided in several and slidably inserted on the wetland pool body (1), and the filler frame (2) is arranged along the length direction of the wetland pool body (1); The ventilation mechanism (3) is installed inside the packing frame (2), with one end connected to the inflation device and the other end connected to several sets of elastic packing (4); The elastic packing (4) expands and contracts through the ventilation mechanism (3). Expansion will block the inside of the packing frame (2) to filter sewage, and contraction will cause large particles of debris to fall off. The bottom of the wetland pool (1) is provided with a mud collection trough (6), which is arranged along the length of the wetland pool (1) and is used to carry debris that falls off the elastic filler (4). Several backwash pipes (5) are provided above the mud collection trough (6), which are arranged along the length of the wetland pool (1). The backwash pipes (5) use nozzles (51) to flush the small debris attached to the elastic filler (4) and the debris flows out through the mud collection trough (6).

2. The scalable, anti-clogging subsurface flow wetland system according to claim 1, characterized in that: The ventilation mechanism (3) includes a main ventilation pipe (31), a connecting pipe (32), and branch ventilation pipes (33), wherein: One end of the main ventilation pipe (31) is connected to the inflation device, and the other end is connected to the branch ventilation pipe (33) through the connecting pipe (32); The number of ventilation manifolds (33) is the same as the number of elastic packing (4) groups. The ventilation manifolds (33) are vertically arranged and distributed along the length of the packing frame (2). Several groups of elastic packing (4) are evenly connected to the ventilation manifolds (33) to realize the expansion and contraction of the elastic packing (4).

3. A scalable, anti-clogging subsurface flow wetland system according to claim 2, characterized in that: The packing frame (2) includes a fixing frame (21), a limiting slider (22), a locking hole (23), and a flushing screen (24), wherein: The fixed frame (21) is inserted into the wetland pool body (1) and is used to support the ventilation mechanism (3) and the elastic filler (4); The limiting slider (22) is symmetrically installed on both sides of the fixed frame (21) and slidably connected to the wetland pool body (1). The limiting slider (22) is used to limit the sliding of the fixed frame (21) and maintain stability. The locking holes (23) are provided in a plurality of evenly spaced on the limiting slider (22); The rinsing net (24) is fixedly installed at the bottom of the fixed frame (21).

4. A scalable, anti-clogging subsurface flow wetland system according to claim 3, characterized in that: The wetland pool body (1) is provided with a lifting groove (11), a limiting groove (12), a driving cavity (13), and a locking cavity (14), wherein: The lifting groove (11) corresponds to and matches the two sides of the fixed frame (21), and the lifting groove (11) is for the fixed frame (21) to be inserted; The limiting groove (12) corresponds to and matches the limiting slider (22), the limiting groove (12) allows the limiting slider (22) to slide, and the limiting groove (12) is in communication with the lifting groove (11); The driving cavity (13) is opened on both sides of the wetland pool (1) and communicates with the locking cavity (14), which is close to the packing frame (2); The drive cavity (13) and the locking cavity (14) are provided with a drive mechanism (7) and a locking mechanism (8).

5. A scalable, anti-clogging subsurface flow wetland system according to claim 4, characterized in that: The drive mechanism (7) includes a drive shaft (71), a turntable (72), a drive wheel (73), a driven wheel (74), a driven shaft (75), and a lead screw (76), wherein: The drive shaft (71) is rotatably connected to the wetland pool body (1) and extends into the drive cavity (13); The turntable (72) is fixedly installed at the end of the drive shaft (71) located outside the wetland pool (1) and is used to drive the drive shaft (71); The drive wheel (73) is fixedly installed at the end of the drive shaft (71) located in the drive cavity (13) and is used to drive the driven wheel (74); The driven wheel (74) is rotatably connected to the drive cavity (13) via the driven shaft (75) and is meshed with the driving wheel (73); The lead screw (76) is fixedly mounted on the driven shaft (75) and extends into the locking cavity (14). The lead screw (76) is used to drive the locking mechanism (8).

6. A scalable, anti-clogging subsurface flow wetland system according to claim 5, characterized in that: The locking mechanism (8) includes a lead screw seat (81), a push plate (82), a reinforcing mechanism (83), and a locking block (84), wherein: The lead screw seat (81) is fixedly installed on the push plate (82) and threadedly connected to the lead screw (76); The push plate (82) is slidably connected to the locking cavity (14) and is used to drive the locking block (84); The reinforcing mechanism (83) is installed between the push plate (82) and the inner wall of the locking cavity (14) and is used to drive the push plate (82); The locking block (84) is slidably connected to the locking cavity (14) and extends out of the locking cavity (14). The locking block (84) corresponds to and matches the locking hole (23). The locking block (84) fixes the packing frame (2) to the wetland pool body (1) by inserting into the locking hole (23).

7. A scalable, anti-clogging subsurface flow wetland system according to claim 6, characterized in that: The drive mechanism (7) further includes a screw (77), a fixed plate (78), and a base (79), wherein: The screw (77) is threaded onto the turntable (72); The fixed disk (78) is fixedly installed at the end of the screw (77) and is used to drive the screw (77); The base (79) is fixedly installed on the wetland pool body (1) and located directly below the screw (77); The fixed plate (78) drives the screw (77) to be inserted into the base (79) to fix the turntable (72) so as to fix the packing frame (2) to the wetland pool body (1).

8. A scalable, anti-clogging subsurface flow wetland system according to claim 6, characterized in that: The reinforcing mechanism (83) is a spring and a damper to improve the firmness of the locking block (84) when inserted into the locking hole (23).

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