Fabricated packing device and method for constructed wetland based on water pollution control

Abstract

The invention discloses a constructed wetland fabricated filler device and method based on water pollution control, and relates to the technical field of water pollution control. According to the constructed wetland assembly type filling device and method based on water pollution control, the stepped base platform, the first filling box mechanism, the second filling box mechanism and the third filling box mechanism are matched with one another, the three filling box mechanisms are arranged in a stepped mode, the second filling box mechanism is of a mirror image structure of the first filling box mechanism, and the third filling box mechanism is of a mirror image structure of the third filling box mechanism. The third stuffing box mechanism and the first stuffing box mechanism are consistent in structure, a reverse complementary three-stage progressive filtering path is formed, sewage sufficiently flows through all box body stuffing areas, primary, secondary and deep step-by-step purification is achieved, the pollutant removal rate is greatly increased, the stuffing box mechanisms can be sequentially driven to operate in the sewage flowing process through step type assembly, and the sewage treatment efficiency is improved. Filler turning and damaged filler collection are synchronously completed, and intelligent maintenance of the whole process is achieved.

Description

Technical Field

[0001] This invention relates to the field of water pollution control technology, specifically to an artificial wetland prefabricated filler device and method based on water pollution control. Background Technology

[0002] Constructed wetlands are an ecological water treatment technology that mimics the structure and function of natural wetlands. Relying on substrates, plants, and microorganisms, they purify wastewater through the synergistic effects of physical filtration, chemical adsorption, and biodegradation. They are characterized by low investment costs, simple operation and maintenance, and outstanding ecological benefits. Since its introduction to my country, this technology has been continuously promoted and is now widely used in various fields such as advanced treatment of wastewater effluent from wastewater treatment plants, river ecological restoration, and rural domestic sewage treatment. With its advantages of low cost and low carbon emissions, constructed wetlands have become an important technical route for water pollution control, and their future application prospects are very broad.

[0003] Referring to the patent application with publication number CN119504034B, an assembled packing device for artificial wetlands is disclosed. Through the cooperation of inlet pipe fittings, auxiliary mechanisms, outlet pipe fittings, etc., sewage can be used as a driving force to make the auxiliary mechanism disperse and loosen the packing, remove the packing's caking phenomenon, and ensure the packing's filtration effect on sewage.

[0004] A comprehensive analysis of the above-mentioned patents reveals the following shortcomings: Existing constructed wetland prefabricated filler devices and methods based on water pollution control utilize filler material to filter and purify passing wastewater. However, due to long-term exposure to water flow, acid and alkali corrosion, and microorganisms, some filler material may pulverize and break, making it difficult to promptly and automatically discharge and collect the damaged filler material during the wastewater purification process. This results in reduced purification efficiency, and the accumulated damaged filler material can also cause secondary pollution. Therefore, it is necessary to provide a constructed wetland prefabricated filler device and method based on water pollution control to solve the above-mentioned technical problems. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a prefabricated packing device and method for constructed wetlands based on water pollution control. This solves the problem that when using packing to filter and purify wastewater, some packing may become pulverized and broken due to long-term exposure to water flow, acid and alkali corrosion, and microorganisms. This makes it difficult to discharge and collect the broken packing in a timely and automatic manner during the wastewater purification process, resulting in reduced purification efficiency. Furthermore, the accumulated broken packing can cause secondary pollution.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a prefabricated filler device for constructed wetlands based on water pollution control, comprising: A stepped base, wherein a plurality of mounting openings are evenly provided on the upper surface of the stepped base; The first packing box mechanism is used to place packing material and automatically discharge pulverized and broken packing material to improve the filtration effect of sewage. The first packing box mechanism is set on the upper surface of the stepped base. The second stuffing box mechanism is used to further filter the water flowing down from the first stuffing box mechanism. The second stuffing box mechanism is disposed on the upper surface of the stepped base and located below the front end of the first stuffing box mechanism. The second stuffing box mechanism is formed by mirroring the first stuffing box mechanism. The third packing box mechanism is used to further filter the water flowing down from the second packing box mechanism. The third packing box mechanism is set on the upper surface of the stepped base and located below the front end of the second packing box mechanism. The third packing box mechanism has the same structure as the first packing box mechanism.

[0007] Preferably, the first stuffing box mechanism includes an assembly box body, with plug-in legs fixedly provided at the four corners of the bottom of the assembly box body, and the four plug-in legs respectively passing through the corresponding mounting ports. A partition is fixedly provided between the front and rear walls of the right side of the inner cavity of the assembly box body, and a liquid-perforated mesh plate is fixedly provided at the bottom of the partition and between it and the inner wall of the assembly box body. A crushed stuffing discharge assembly is provided in the inner cavity of the assembly box body to the left of the partition.

[0008] Preferably, the left wall of the partition is fixedly provided with inner and outer toothed rings, and a number of outer teeth are evenly fixedly provided on the outer side of the inner and outer toothed rings, and a number of inner teeth are evenly fixedly provided on the inner side of the inner and outer toothed rings. A confluence disc is rotatably provided on the left side wall of the inner cavity of the assembly box, and an impeller assembly is rotatably provided between the right wall of the inner cavity of the assembly box and the right wall of the partition.

[0009] Preferably, a receiving side cover is fixedly provided on the right side of the partition, a guide nozzle is fixedly connected to the upper left side of the front end of the assembly box, a side storage cylinder is fixedly connected to the lower left side of the assembly box, the side storage cylinder is connected to the interior of the confluence disc, a transparent observation window is fixedly provided on the left side of the side storage cylinder, a number of graduated grooves are evenly opened on the left side of the side storage cylinder and behind the transparent observation window, and a sealing cover is provided at the bottom of the side storage cylinder by bolts.

[0010] Preferably, the crushed packing discharge assembly includes a rotating shaft, the right end of which is rotatably disposed on the right wall of the inner cavity of the receiving side cover, the left end of which rotatably passes through the interior of the partition and the connecting disc and is rotatably connected to the left wall of the inner cavity of the assembly box, the right end of which is fixedly fitted with a large gear disc located inside the receiving side cover, and a first discharge cylinder assembly and a second discharge cylinder assembly are fixedly disposed on both sides of the outside of the rotating shaft.

[0011] Preferably, a plurality of support rods are uniformly fixedly arranged on the outside of the rotating shaft, and the plurality of support rods are spirally distributed on the outside of the rotating shaft. Long brackets are fixedly arranged on both sides of the front end of the rotating shaft, and short brackets are fixedly arranged on both sides of the rear end of the rotating shaft.

[0012] Preferably, the first discharge cylinder assembly includes a discharge cylinder, which is fixedly connected to two long supports. The left side of the discharge cylinder is fixedly connected to the interior of the confluence disc. The surface of the discharge cylinder is evenly provided with several through holes. An auger rotatably passes through the inner cavity of the discharge cylinder. The left end of the auger is rotatably connected to the right wall of the confluence disc. The right end of the auger rotatably passes through the right wall of the discharge cylinder and is fixedly provided with a first pinion. A feed groove is provided at the bottom of the discharge cylinder. An arc-shaped baffle is fixedly provided on the side of the feed groove away from the rotating shaft. A brush is fixedly provided on the right side of the discharge cylinder. The first pinion meshes with the outer teeth of the inner and outer gear rings. The brush contacts the outer teeth of the inner and outer gear rings.

[0013] Preferably, the second discharge cylinder assembly has the same structure as the first discharge cylinder assembly. The second discharge cylinder assembly is fixedly connected to the two short supports. The feed groove in the second discharge cylinder assembly faces upward. The first pinion in the second discharge cylinder assembly meshes with the inner teeth of the inner and outer gear rings. The brush in the second discharge cylinder assembly contacts the inner teeth of the inner and outer gear rings.

[0014] Preferably, the impeller assembly includes a short shaft, the right end of which is rotatably connected to the right wall of the inner cavity of the assembly housing, the left end of which rotatably passes through the receiving side cover and is rotatably connected to the right wall of the partition, a number of arc-shaped blades are evenly fixedly arranged around the outer ring of the short shaft, and a second pinion located inside the receiving side cover is fixedly sleeved on the left side of the short shaft, the second pinion meshing with the large gear disk.

[0015] This invention also provides a method for prefabricated filler material for constructed wetlands based on water pollution control, employing a prefabricated filler material device for constructed wetlands based on water pollution control. The specific method includes the following steps: Step 1: Place the required packing material into the first, second, and third packing box mechanisms, allowing sewage to flow in from the upper right side of the first packing box mechanism. The sewage is initially filtered and adsorbed by the packing material. Under the long-term action of water flow and microorganisms, some of the packing material becomes pulverized and broken. Driven by the water flow, the first packing box mechanism works to continuously agitate the packing material inside, preventing caking. At the same time, the pulverized and broken packing material is automatically discharged, achieving automatic separation of intact and damaged packing material within the first packing box mechanism. Step 2: Next, the sewage flows downward through the upper left side of the first packing box mechanism into the second packing box mechanism. Under the impact of the water flow, the second packing box mechanism performs secondary filtration of the sewage and simultaneously performs automatic discharge of damaged packing material to prevent pulverized and broken fine particles from accumulating inside the second packing box mechanism and affecting the filtration effect. Step 3: After secondary filtration by the second packing box mechanism, the wastewater continues to flow into the third packing box mechanism through the upper right side of the second packing box mechanism. Under the impact of the water flow, the third packing box mechanism performs three deep filtrations on the wastewater while simultaneously separating and collecting the damaged packing material. The water after deep filtration is finally discharged from the upper left side of the third packing box mechanism, completing the wastewater purification operation of the entire constructed wetland.

[0016] Beneficial effects This invention provides a prefabricated filler device and method for constructed wetlands based on water pollution control. Compared with the prior art, it has the following advantages: 1. An assembled packing device and method for artificial wetlands based on water pollution control, which, through the cooperation of a stepped base, a first packing box mechanism, a second packing box mechanism, and a third packing box mechanism, adopts a stepped arrangement design. The second packing box mechanism is a mirror image of the first packing box mechanism, and the third packing box mechanism has the same structure as the first packing box mechanism, forming a three-stage progressive filtration path that is mutually complementary. This allows sewage to flow fully through the packing areas of each box, achieving primary, secondary, and deep purification in stages, significantly improving the pollutant removal rate. The stepped assembly also allows each packing box mechanism to be driven to operate sequentially during sewage flow, simultaneously completing the packing turnover and collection of damaged packing, realizing intelligent maintenance throughout the entire process.

[0017] 2. A prefabricated packing device and method for constructed wetlands based on water pollution control, which utilizes the interaction between arc-shaped blades, a second pinion, a large gear disc, and a broken packing discharge component. When sewage flows into the packing box mechanism, it impacts the arc-shaped blades, which drives the short shaft to rotate. Through the meshing transmission between the second pinion and the large gear disc, the broken packing discharge component is driven to operate as a whole, realizing the self-driven process of packing turning, broken packing collection and transportation. During the broken packing collection process, the first pinion rotates along the teeth of the inner and outer gear rings, driving the auger to rotate. This transmission action is also powered by the self-driven rotation of the shaft, with no additional energy input, reducing the operating cost of the device and the subsequent energy maintenance investment, which is in line with the concept of low-carbon and environmentally friendly water pollution control.

[0018] 3. A prefabricated packing device and method for constructed wetlands based on water pollution control, comprising a discharge cylinder, an auger, a feed trough, inner and outer toothed rings, a confluence disc, and a side storage cylinder, wherein the first and second discharge cylinder assemblies mesh with the outer and inner teeth of the inner and outer toothed rings, respectively, and when rotating around the shaft, the pulverized and broken packing material in the assembly box is collected through the feed trough and the arc-shaped baffle. When the auger in the discharge cylinder rotates, the collected broken packing material is quickly gathered and transported to the confluence disc, and finally falls into the side storage cylinder for collection. This avoids the accumulation of broken packing material in the assembly box and prevents fine particles from spreading with the water flow and causing secondary pollution. The intact packing material can remain stably in the assembly box and continuously perform physical filtration, chemical adsorption, and biodegradation, ensuring that the device always operates in a highly efficient filtration state.

[0019] 4. A prefabricated packing device and method for constructed wetlands based on water pollution control, wherein the first discharge cylinder assembly, the second discharge cylinder assembly, and the spiral support rod cooperate with each other. The first discharge cylinder assembly and the second discharge cylinder assembly rotate with the rotating shaft. Due to the differentiated spacing design between the first discharge cylinder assembly, the second discharge cylinder assembly, and the rotating shaft, the packing area is agitated in layers. The packing in different areas of the assembly box is continuously agitated and dispersed, breaking up the accumulation and compaction, keeping the packing loose, increasing the contact area between sewage and packing, and ensuring stable filtration and degradation efficiency. In addition, the spiral support rod synchronously and directionally pushes the packing to the partition side, avoiding packing offset and accumulation, so that the packing is dynamically and evenly distributed, allowing sewage to permeate evenly and achieve efficient filtration throughout the area. From the two aspects of agitation to prevent compaction and collection of damaged packing, the packing can be precisely maintained.

[0020] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0021] Figure 1 This is a perspective view of the present invention; Figure 2 This is a perspective view of the stepped base of the present invention; Figure 3 This is a first perspective view of the first stuffing box mechanism of the present invention; Figure 4 This is a second perspective view of the first stuffing box mechanism of the present invention; Figure 5 This is a first sectional perspective view of the first stuffing box mechanism of the present invention; Figure 6 For the present invention Figure 5 A magnified view of a section at point A in the middle; Figure 7 This is a second sectional perspective view of the first stuffing box mechanism of the present invention; Figure 8 This is an assembly diagram of the crushing packing discharge assembly, the conduit disc, the impeller assembly, and the receiving side cover of the present invention; Figure 9 This is a perspective view of the crushed packing discharge assembly of the present invention; Figure 10 This is a perspective view of the rotating shaft of the present invention; Figure 11 This is a first perspective view of the first discharge cylinder assembly of the present invention; Figure 12 This is a second perspective view of the first discharge cylinder assembly of the present invention; Figure 13 This is an exploded view of the first discharge cylinder assembly of the present invention; Figure 14 This is a perspective view of the impeller assembly of the present invention.

[0022] In the diagram: 1. Stepped base; 2. Mounting port; 3. First stuffing box mechanism; 31. Assembly box; 32. Insertion leg; 33. Partition plate; 34. Fluid-passing perforated plate; 35. Crushed stuffing discharge assembly; 351. Rotating shaft; 352. Large gear disc; 353. First discharge cylinder assembly; 3531. Discharge cylinder; 3532. Through hole; 3533. Screwdriver; 3534. First pinion; 3535. Arc-shaped baffle; 353 6. Brush; 354. Second discharge cylinder assembly; 355. Support rod; 356. Long bracket; 357. Short bracket; 36. Internal and external gear rings; 37. Connecting disc; 38. Impeller assembly; 381. Short shaft; 382. Arc-shaped blade; 383. Second pinion; 39. Receiving side cover; 310. Guide nozzle; 311. Side storage cylinder; 312. Transparent observation window; 4. Second stuffing box mechanism; 5. Third stuffing box mechanism. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] This invention provides two technical solutions: like Figure 1 and Figure 2 The first embodiment is shown: a prefabricated filler device for constructed wetlands based on water pollution control, comprising: A stepped base 1, with several mounting openings 2 evenly provided on the upper surface of the stepped base 1; The first packing box mechanism 3 is used to place packing and automatically discharge pulverized and broken packing, thereby improving the filtration effect on sewage. The first packing box mechanism 3 is set on the upper surface of the stepped base 1. The second packing box mechanism 4 is used to further filter the water flowing down from the first packing box mechanism 3. The second packing box mechanism 4 is set on the upper surface of the stepped base 1 and located below the front end of the first packing box mechanism 3. The second packing box mechanism 4 is formed by mirroring the first packing box mechanism 3. The third stuffing box mechanism 5 is used to further filter the water flowing down from the second stuffing box mechanism 4. The third stuffing box mechanism 5 is set on the upper surface of the stepped base 1 and located below the front end of the second stuffing box mechanism 4. The third stuffing box mechanism 5 has the same structure as the first stuffing box mechanism 3.

[0025] Through the cooperation of the stepped base 1, the first stuffing box mechanism 3, the second stuffing box mechanism 4, and the third stuffing box mechanism 5, the three stuffing box mechanisms adopt a stepped arrangement design. The second stuffing box mechanism 4 is a mirror structure of the first stuffing box mechanism 3, and the third stuffing box mechanism 5 has the same structure as the first stuffing box mechanism 3, forming a three-stage progressive filtration path that is complementary in opposite directions. This allows the sewage to flow fully through the stuffing areas of each box, achieving primary, secondary, and deep purification step by step, greatly improving the pollutant removal rate. The stepped assembly also allows each stuffing box mechanism to be driven to operate sequentially during the sewage flow, simultaneously completing the stuffing overturning and collection of damaged stuffing, realizing intelligent maintenance throughout the entire process.

[0026] like Figures 3 to 14The second embodiment is shown, and its main difference from the first embodiment is that: a prefabricated filling device for artificial wetlands based on water pollution control, the first filling box mechanism 3 includes an assembly box 31, with four fixed insertion legs 32 at the bottom corners of the assembly box 31, each of the four insertion legs 32 passing through the corresponding installation port 2; a partition 33 is fixedly installed between the front and rear walls of the right side of the inner cavity of the assembly box 31, and a liquid-perforated mesh plate 34 is fixedly installed at the bottom of the partition 33 and between it and the inner wall of the assembly box 31; a crushed filling discharge component 35 is provided in the inner cavity of the assembly box 31 to the left of the partition 33; an inner and outer toothed ring 36 is fixedly installed on the left wall of the partition 33, and a number of outer teeth are evenly fixedly installed around the outer edge of the inner and outer toothed rings 36; the inner and outer... A number of inner teeth are evenly fixedly arranged around the inner side of the toothed ring 36. A connecting disc 37 is rotatably arranged on the left side wall of the inner cavity of the assembly box 31. An impeller assembly 38 is rotatably arranged between the right side wall of the inner cavity of the assembly box 31 and the right side wall of the partition 33. A receiving side cover 39 is fixedly arranged on the right side of the partition 33. A guide nozzle 310 is fixedly connected to the upper left side of the front end of the assembly box 31. A side storage cylinder 311 is fixedly connected to the lower left side of the assembly box 31. The side storage cylinder 311 is connected to the interior of the connecting disc 37. A transparent observation window 312 is fixedly arranged on the left side of the side storage cylinder 311. A number of graduated grooves are evenly opened on the left side of the side storage cylinder 311 and behind the transparent observation window 312. A tight seal is bolted to the bottom of the side storage cylinder 311. The capping and crushing filler discharge assembly 35 includes a rotating shaft 351. The right end of the rotating shaft 351 is rotatably mounted on the right wall of the inner cavity of the receiving side cover 39. The left end of the rotating shaft 351 rotatably passes through the interior of the partition plate 33 and the connecting disc 37 and is rotatably connected to the left wall of the inner cavity of the assembly box 31. A large gear disc 352 located inside the receiving side cover 39 is fixedly sleeved on the right end of the rotating shaft 351. A first discharge cylinder assembly 353 and a second discharge cylinder assembly 354 are fixedly mounted on both sides of the outside of the rotating shaft 351. The distance between the first discharge cylinder assembly 353 and the rotating shaft 351 is greater than the distance between the second discharge cylinder assembly 354 and the rotating shaft 351. A number of support rods 355 are evenly fixedly mounted on the outside of the rotating shaft 351. The support rods 355 are spirally distributed on the rotating shaft 351. Externally, long supports 356 are fixedly installed on both sides of the front end of the rotating shaft 351, and short supports 357 are fixedly installed on both sides of the rear end of the rotating shaft 351. The first discharge cylinder assembly 353 includes a discharge cylinder 3531, which is fixedly connected to the two long supports 356. The left side of the discharge cylinder 3531 is fixedly connected to the interior of the confluence disc 37. Several through holes 3532 are evenly opened on the surface of the discharge cylinder 3531. An auger 3533 rotatably passes through the inner cavity of the discharge cylinder 3531. The left end of the auger 3533 is rotatably connected to the right wall of the confluence disc 37. The right end of the auger 3533 rotatably passes through the right wall of the discharge cylinder 3531 and is fixedly installed with a first pinion 3534. A feed groove is opened at the bottom of the discharge cylinder 3531.An arc-shaped baffle 3535 is fixedly installed on the side of the feed trough away from the rotating shaft 351. A brush 3536 is fixedly installed on the right side of the discharge cylinder 3531. The first pinion 3534 meshes with the outer teeth of the inner and outer gear rings 36. The brush 3536 contacts the outer teeth of the inner and outer gear rings 36. The second discharge cylinder assembly 354 has the same structure as the first discharge cylinder assembly 353. The second discharge cylinder assembly 354 is fixedly connected to two short supports 357. The opening of the feed trough in the second discharge cylinder assembly 354 faces upward. The first pinion 3534 in the second discharge cylinder assembly 354 meshes with the outer teeth of the inner and outer gear rings 36. The inner teeth of the gear ring 36 mesh with each other, and the brush 3536 in the second discharge cylinder assembly 354 contacts the inner teeth of the inner and outer gear rings 36. The impeller assembly 38 includes a short shaft 381, the right end of which is rotatably connected to the right wall of the inner cavity of the assembly housing 31, and the left end of which rotatably passes through the receiving side cover 39 and is rotatably connected to the right wall of the partition 33. Several arc-shaped blades 382 are evenly fixedly arranged around the outer ring of the short shaft 381, and a second pinion 383 located inside the receiving side cover 39 is fixedly sleeved on the left side of the short shaft 381. The second pinion 383 meshes with the large gear disc 352.

[0027] Through the interaction of the arc-shaped blade 382, ​​the second pinion 383, the large gear 352, and the broken packing discharge assembly 35, when sewage flows into the packing box mechanism, it impacts the arc-shaped blade 382, ​​which drives the short shaft 381 to rotate. Through the meshing transmission between the second pinion 383 and the large gear 352, the broken packing discharge assembly 35 is driven to rotate as a whole, realizing the self-driven process of packing turnover, broken packing collection and transportation. During the broken packing collection process, the first pinion 3534 rotates along the teeth of the inner and outer gear rings 36, driving the auger 3533 to rotate. This transmission action is also powered by the self-driven rotation of the shaft. With no additional energy input, the operating cost and subsequent energy maintenance investment of the device are reduced, which aligns with the concept of low-carbon and environmentally friendly water pollution control. Through the cooperation between the discharge cylinder 3531, auger 3533, feed trough, inner and outer toothed rings 36, connecting disc 37 and side storage cylinder 311, the first discharge cylinder assembly 353 and the second discharge cylinder assembly 354 respectively mesh with the outer teeth and inner teeth of the inner and outer toothed rings 36. When rotating around the rotating shaft 351, the powdered and crushed filler in the assembly box 31 is collected through the feed trough and the arc-shaped baffle 3535. When the auger 3533 in the discharge cylinder 3531 rotates, The collected broken packing material is quickly gathered and transported to the confluence disc 37, and finally falls into the side storage cylinder 311 for collection. This prevents the broken packing material from accumulating in the assembly box 31 and avoids the spread of fine particles with the water flow, which could cause secondary pollution. The intact packing material can remain stably in the assembly box 31, continuously performing physical filtration, chemical adsorption, and biodegradation, ensuring that the device always operates in a highly efficient filtration state. Through the cooperation between the first discharge cylinder assembly 353, the second discharge cylinder assembly 354, and the spiral support rod 355, the first discharge cylinder assembly 353 and the second discharge cylinder assembly 354 rotate with the rotating shaft 351. Due to the differentiated spacing design of the first discharge cylinder assembly 353, the second discharge cylinder assembly 354 and the rotating shaft 351, the packing area is agitated in layers. This continuously agitates and disperses the packing in different areas within the assembly box 31, breaking up the accumulated compaction, keeping the packing loose, increasing the contact area between the sewage and the packing, and ensuring stable filtration and degradation efficiency. In addition, the spiral support rod 355 synchronously and directionally pushes the packing to the side of the partition plate 33, preventing the packing from shifting and accumulating, so that the packing is dynamically and evenly distributed, allowing sewage to permeate evenly and achieve efficient filtration throughout the entire area. From the two aspects of agitation to prevent compaction and collection of damaged packing, the packing can be precisely maintained.

[0028] This invention also provides a method for prefabricated filler material for constructed wetlands based on water pollution control. The method employs a prefabricated filler material device for constructed wetlands based on water pollution control, and includes the following steps: Step 1: Insert the insertion legs 32 of the first stuffing box mechanism 3, the second stuffing box mechanism 4, and the third stuffing box mechanism 5 into the corresponding mounting ports 2 to complete the stepped assembly of each stuffing box mechanism. Then, fill the assembly box 31 of the three stuffing box mechanisms with suitable sewage treatment packing. Guide the sewage to be treated into the assembly box 31 from above the impeller assembly 38. During the flow, the sewage impacts the arc-shaped blades 382 directly below, causing the short shaft 381 to rotate. This rotation is then driven by the meshing of the second pinion 383 and the large gear 352, which in turn drives the rotating shaft 351 to rotate. The sewage then flows through the... The liquid flows through the perforated plate 34 to the other side of the partition 33, where it contacts the wastewater treatment packing material inside the assembly box 31. Through physical filtration, chemical adsorption, and biodegradation by microorganisms on the packing surface, the wastewater undergoes initial purification. The perforated plate 34 intercepts the packing material, preventing intact packing from entering the right side of the partition 33. Simultaneously, the rotating shaft 351 drives the first discharge cylinder assembly 353, the second discharge cylinder assembly 354, and the spirally distributed support rods 355 to rotate. The rotating first and second discharge cylinder assemblies 353 and 354 promptly agitate the packing material inside the assembly box 31. To prevent the packing material from caking under long-term water flow and ensure sufficient contact between wastewater and the packing material, thus improving the initial filtration effect, the spirally distributed support rods 355 push the surrounding packing material towards the side closer to the baffle 33 during rotation. Due to long-term water flow, acid and alkali corrosion, and the action of microorganisms, some packing material may pulverize and break. As the first discharge cylinder assembly 353 and the second discharge cylinder assembly 354 rotate clockwise around the rotating shaft 351, the first discharge cylinder assembly 353 collects the damaged packing material on the outside through the feed trough and the arc-shaped baffle 3535. At the same time, the rotating shaft 351 drives the first small... Gear 3534 rotates along the teeth of inner and outer gear rings 36, causing auger 3533 to rotate inside discharge cylinder 3531. The collected broken packing is gathered through discharge cylinder 3531 and transported to converging disc 37, and then falls into side storage cylinder 311 for collection. Similarly, the second discharge cylinder assembly 354 also collects external broken packing, realizing timely and automatic separation of complete packing and broken packing in the first packing box mechanism 3, avoiding the accumulation of broken packing in the assembly box 31 and affecting the filtration efficiency. Brush 3536 simultaneously cleans the impurities attached to the teeth in advance to ensure smooth transmission. Step 2: The wastewater, after initial filtration by the first packing box mechanism 3, flows downwards from the guide nozzle 310 and enters the stepped second packing box mechanism 4. Since the second packing box mechanism 4 is a mirror image of the first packing box mechanism 3, the flow direction of the wastewater within it is complementary to that of the first packing box mechanism 3, allowing it to flow fully through the packing area. Utilizing the secondary adsorption and degradation effects of the packing, pollutants not initially filtered are removed from the wastewater, completing the secondary purification process. The water flow impact created when the wastewater enters the second packing box mechanism 4 also drives the internal impeller assembly 38 to rotate. Through the same gear meshing transmission method, this drives the crushing packing... When the material discharge component 35 is in operation, it agitates the packing to prevent caking, and collects the powdered and broken packing produced by sewage flushing and microbial action in the box, and transports it to its side storage cylinder 311 for collection. During the process, the amount of broken packing collected can be viewed in real time through the transparent observation window 312 and scale groove of the side storage cylinder 311, so as to grasp the loss of packing and provide a basis for subsequent packing replenishment. At the same time, it ensures that the second packing box mechanism 4 is mainly composed of complete packing, avoids secondary pollution caused by the accumulation of broken packing, and ensures the stability of secondary filtration. The horizontal plane of the short shaft 381 is slightly higher than the bottom horizontal plane of the guide nozzle 310. Step 3: After secondary filtration by the second packing box mechanism 4, the wastewater continues to flow from the guide nozzle 310 of the second packing box mechanism 4 into the third packing box mechanism 5 located below. The third packing box mechanism 5 has the same structure as the first packing box mechanism 3. Inside it, the wastewater follows the flow path of the initial filtration, making full contact with the packing material. Through the deep adsorption of the packing material and the thorough degradation by microorganisms, the remaining trace pollutants in the wastewater are removed, achieving a third stage of deep purification of the wastewater. The working principle is the same as the first two stages of the packing box mechanism. The flow impact of the wastewater drives the third packing box mechanism 5 to work, completing the process. The internal packing material is turned over to prevent caking, and the damaged packing material is automatically collected and transported, realizing synchronous intelligent maintenance of the three-stage packing box mechanism. No external power is required; all packing material maintenance operations can be completed solely by the normal water flow inside the wetland. The water filtered by the third packing box mechanism 5 is finally discharged from its guide nozzle 310, completing the entire sewage purification process of the constructed wetland. Subsequently, based on the amount of damaged packing material collected in the side storage cylinder 311, the bottom sealing cover can be opened periodically to clean the collected damaged packing material and replenish new packing material into each packing box mechanism, ensuring the continuous and stable sewage treatment capacity of the device.

[0029] 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.

[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A prefabricated filler device for constructed wetlands based on water pollution control, characterized in that, include: A stepped base, wherein a plurality of mounting openings are evenly provided on the upper surface of the stepped base; The first packing box mechanism is used to place packing material and automatically discharge pulverized and broken packing material to improve the filtration effect of sewage. The first packing box mechanism is set on the upper surface of the stepped base. The second stuffing box mechanism is used to further filter the water flowing down from the first stuffing box mechanism. The second stuffing box mechanism is disposed on the upper surface of the stepped base and located below the front end of the first stuffing box mechanism. The second stuffing box mechanism is formed by mirroring the first stuffing box mechanism. The third packing box mechanism is used to further filter the water flowing down from the second packing box mechanism. The third packing box mechanism is set on the upper surface of the stepped base and located below the front end of the second packing box mechanism. The third packing box mechanism has the same structure as the first packing box mechanism.

2. The prefabricated filler device for constructed wetlands based on water pollution control according to claim 1, characterized in that: The first stuffing box mechanism includes an assembly box body. Each of the four bottom corners of the assembly box body is fixedly provided with a plug-in leg. The four plug-in legs pass through the corresponding mounting ports. A partition is fixedly provided between the front and rear walls of the right side of the inner cavity of the assembly box body. A liquid-perforated mesh plate is fixedly provided at the bottom of the partition and between the partition and the inner wall of the assembly box body. A crushed stuffing discharge assembly is provided in the inner cavity of the assembly box body to the left of the partition.

3. The prefabricated filler device for constructed wetlands based on water pollution control according to claim 2, characterized in that: The left wall of the partition is fixedly provided with inner and outer toothed rings. A number of outer teeth are evenly fixedly provided on the outer side of the inner and outer toothed rings, and a number of inner teeth are evenly fixedly provided on the inner side of the inner and outer toothed rings. A confluence disc is rotatably provided on the left side wall of the inner cavity of the assembly box. An impeller assembly is rotatably provided between the right side wall of the inner cavity of the assembly box and the right side wall of the partition.

4. The prefabricated filler device for constructed wetlands based on water pollution control according to claim 3, characterized in that: A receiving side cover is fixedly installed on the right side of the partition. A guide nozzle is fixedly connected to the upper left side of the front end of the assembly box. A side storage cylinder is fixedly connected to the lower left side of the assembly box. The side storage cylinder is connected to the interior of the connecting disc. A transparent observation window is fixedly installed on the left side of the side storage cylinder. Several graduated grooves are evenly opened on the left side of the side storage cylinder and behind the transparent observation window. A sealing cover is installed at the bottom of the side storage cylinder by bolts.

5. The prefabricated filler device for constructed wetlands based on water pollution control according to claim 4, characterized in that: The crushed packing discharge assembly includes a rotating shaft. The right end of the rotating shaft is rotatably mounted on the right wall of the inner cavity of the receiving side cover. The left end of the rotating shaft rotatably passes through the interior of the partition and the connecting disc and is rotatably connected to the left wall of the inner cavity of the assembly box. A large gear disc located inside the receiving side cover is fixedly sleeved on the right end of the rotating shaft. A first discharge cylinder assembly and a second discharge cylinder assembly are fixedly mounted on both sides of the outside of the rotating shaft.

6. The prefabricated filler device for constructed wetlands based on water pollution control according to claim 5, characterized in that: Several support rods are evenly fixedly arranged on the outside of the rotating shaft. The support rods are spirally distributed on the outside of the rotating shaft. Long brackets are fixedly arranged on both sides of the front end of the rotating shaft, and short brackets are fixedly arranged on both sides of the rear end of the rotating shaft.

7. The prefabricated filler device for constructed wetlands based on water pollution control according to claim 6, characterized in that: The first discharge cylinder assembly includes a discharge cylinder, which is fixedly connected to two long supports. The left side of the discharge cylinder is fixedly connected to the interior of the confluence disc. Several through holes are evenly opened on the surface of the discharge cylinder. An auger rotatably passes through the inner cavity of the discharge cylinder. The left end of the auger is rotatably connected to the right wall of the confluence disc. The right end of the auger rotatably passes through the right wall of the discharge cylinder and is fixedly provided with a first pinion. A feed groove is opened at the bottom of the discharge cylinder. An arc-shaped baffle is fixedly provided on the side of the feed groove away from the rotating shaft. A brush is fixedly provided on the right side of the discharge cylinder. The first pinion meshes with the outer teeth of the inner and outer gear rings. The brush contacts the outer teeth of the inner and outer gear rings.

8. The prefabricated filler device for constructed wetlands based on water pollution control according to claim 7, characterized in that: The second discharge cylinder assembly has the same structure as the first discharge cylinder assembly. The second discharge cylinder assembly is fixedly connected to two short supports. The feed groove in the second discharge cylinder assembly faces upward. The first pinion in the second discharge cylinder assembly meshes with the inner teeth of the inner and outer gear rings. The brush in the second discharge cylinder assembly contacts the inner teeth of the inner and outer gear rings.

9. The prefabricated filler device for constructed wetlands based on water pollution control according to claim 5, characterized in that: The impeller assembly includes a short shaft, the right end of which is rotatably connected to the right wall of the inner cavity of the assembly box, the left end of which rotatably passes through the receiving side cover and is rotatably connected to the right wall of the partition. Several arc-shaped blades are evenly fixedly arranged around the outside of the short shaft. A second pinion located inside the receiving side cover is fixedly sleeved on the left side of the short shaft, and the second pinion meshes with the large gear plate.

10. A method for constructing prefabricated filler material for artificial wetlands based on water pollution control, characterized in that: The method using the prefabricated filler device for constructed wetlands based on water pollution control as described in any one of claims 1-9 includes the following steps: Step 1: Place the required packing material into the first, second, and third packing box mechanisms, allowing sewage to flow in from the upper right side of the first packing box mechanism. The sewage is initially filtered and adsorbed by the packing material. Under the long-term action of water flow and microorganisms, some of the packing material becomes pulverized and broken. Driven by the water flow, the first packing box mechanism works to continuously agitate the packing material inside, preventing caking. At the same time, the pulverized and broken packing material is automatically discharged, achieving automatic separation of intact and damaged packing material within the first packing box mechanism. Step 2: Next, the sewage flows downward through the upper left side of the first packing box mechanism into the second packing box mechanism. Under the impact of the water flow, the second packing box mechanism performs secondary filtration of the sewage and simultaneously performs automatic discharge of damaged packing material to prevent pulverized and broken fine particles from accumulating inside the second packing box mechanism and affecting the filtration effect. Step 3: After secondary filtration by the second packing box mechanism, the wastewater continues to flow into the third packing box mechanism through the upper right side of the second packing box mechanism. Under the impact of the water flow, the third packing box mechanism performs three deep filtrations on the wastewater while simultaneously separating and collecting the damaged packing material. The water after deep filtration is finally discharged from the upper left side of the third packing box mechanism, completing the wastewater purification operation of the entire constructed wetland.

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