A cage floating bed combined type oyster and seaweed planting symbiotic tail water purification device

Abstract

The application relates to a cage floating bed combined type oyster and seaweed planting symbiotic tail water purification device, which comprises a tail water pool, an ecological pool connected with the tail water pool, a primary filter device arranged in the tail water pool, a secondary filter device arranged in the tail water pool, the secondary filter device comprising ultrafiltration cotton strips arranged in the tail water pool, a dilution device connected with the secondary filter device, the dilution device comprising a rotating connecting stirring rod, one end of the stirring rod being fixedly connected with a floating ball, the stirring rod being rotationally connected with a pulling rod, the tail water pool being provided with a clamping strip, one end of the pulling rod being fixedly connected with a water baffle, a water storage pool being arranged on the top of the tail water pool, the water storage pool being connected with a water outlet pipe, the top of the tail water pool being connected with a connecting pipe, the connecting pipe being connected with a flushing pipe at an end far away from the water outlet pipe, the flushing pipe being fixedly connected with a jet pipe, the jet pipe being provided with a plurality of jet holes, the water baffle being connected with a connecting ring, and the application has the effects of solving the pollution problem of breeding tail water and realizing the secondary utilization value of the breeding tail water.

Description

Technical Field

[0001] This application relates to the field of marine aquaculture wastewater treatment, and in particular to a suspended floating bed combined with shellfish and algae symbiotic wastewater purification device. Background Technology

[0002] Currently, marine intensive aquaculture has advantages such as small footprint, high yield, good economic benefits, and sustainable production. However, with the expansion of aquaculture scale, problems such as extensive management and lack of treatment of aquaculture wastewater are becoming increasingly prominent. Large amounts of organic matter and nitrogen and phosphorus nutrients in aquaculture wastewater are directly discharged into the sea, which can easily lead to increased eutrophication in adjacent sea areas, thereby inducing disasters such as red tides, threatening the safety of marine ecosystems and fishery resources, as well as human health.

[0003] Currently, most of the wastewater discharged from marine industrial aquaculture undergoes simple filtration or the addition of chemical reagents to dilute the eutrophication problem. After such simple treatment, the wastewater is discharged. However, the removal and purification effect of N and P nutrients in the wastewater is weak after simple filtration, and the addition of chemical reagents will generate new pollution.

[0004] Regarding the aforementioned technologies, the inventors believe that after simple filtration or treatment with added chemical reagents, aquaculture wastewater can only be directly discharged and cannot be recycled. This wastes water resources and may pollute the local ecological environment. Summary of the Invention

[0005] To address the pollution problem of aquaculture wastewater and realize its secondary utilization value, this application provides a suspended cage floating bed combined with shellfish, algae and plant symbiotic wastewater purification device.

[0006] The technical solution provided in this application for a cage-floating bed combined with shellfish and algae symbiotic wastewater purification device adopts the following: A suspended floating bed combined with shellfish, algae, and plant symbiotic tailwater purification device includes a tailwater tank connected to an ecological pond. A primary filtration device is installed in the tailwater tank, and a secondary filtration device is installed near the primary filtration device. The secondary filtration device includes ultrafiltration cotton strips installed in the tailwater tank. A dilution device is connected to the secondary filtration device and located between the primary and secondary filtration devices. The dilution device includes a lever rotatably connected to the tailwater tank. A float is fixedly connected to the end of the lever away from the tailwater tank, and a pull rod is rotatably connected to the end of the lever away from the float. A locking strip is installed in the tailwater tank at a position corresponding to the lower part of the lever. At the position of the lever away from the float, the locking strip can abut against the lever. A baffle plate is fixedly connected to the end of the pull lever away from the lever. A water storage tank is set at the top of the tailwater tank, and the water storage tank is connected to the water outlet pipe. A connecting pipe is connected to the top of the tailwater tank near the water outlet pipe. A flushing pipe is connected to the end of the connecting pipe away from the water outlet pipe. A spray pipe is fixedly connected to the flushing pipe. The spray pipe has multiple spray holes, which are set towards the ultrafiltration cotton strip. The baffle plate is located between the water outlet pipe and the connecting pipe. The ends of the water outlet pipe and the connecting pipe that are close to each other can abut against the baffle plate. The baffle plate is set to completely cover the cross section of the water outlet pipe and the connecting pipe. A connecting ring is connected to the baffle plate, and the connecting ring can abut against the water outlet pipe and the connecting pipe.

[0007] By adopting the above technical solution, when users use the water, the wastewater first passes through an ecological pond. The shellfish in the ecological pond can be oysters, scallops, and mussels; the algae can be Isochrysis galbana, Spirulina, Ulva prolifera, and Gracilaria; and the halophytes can be Portulaca oleracea and Suaeda salsa. By utilizing the characteristics of shellfish to filter out small suspended solids and small algae, and the characteristics of algae and halophytes to absorb nitrogen and phosphorus in the seawater aquaculture wastewater, the water quality purification efficiency is improved and the purification cost is reduced. The effluent from the ecological pond enters the tailwater tank. Impurities and excess feed in the effluent are intercepted by the primary filtration device. The primary filtration device intercepts impurities and allows the filtered effluent to pass through normally, ensuring that there are no excessive impurities and excess feed in the filtered effluent, thus reducing eutrophication of the effluent from a physical perspective. After passing through the primary filtration device, the effluent flows to the ultrafiltration cotton strips in the secondary filtration device. The ultrafiltration cotton strips further filter impurities and excess feed. As the ultrafiltration cotton strips work, impurities and excess feed accumulate on them, reducing the water permeability of the ultrafiltration cotton strips. The outflow from the tailwater tank is less than the inflow, causing the water level in the tailwater tank to rise. This causes the float to rise, which in turn moves the pull rod at the other end of the lever downward. The pull rod moves the baffle downward, and the connecting ring moves downward with the baffle, connecting the outlet pipe and the connecting pipe. At the same time, the end of the lever away from the float abuts against the locking strip to prevent the lever from rotating continuously as the water level rises. Water in the reservoir flows sequentially through the outlet pipe, connecting pipe, flushing pipe, and jet pipe. Finally, the water is sprayed onto the ultrafiltration cotton strips through the jet nozzles of the jet pipe, flushing away a large amount of impurities and excess feed. This flushing improves the permeability of the ultrafiltration cotton strips, ensuring their cleanliness and filtration effect, while also ensuring normal water flow, extending their lifespan, saving on manual cleaning costs, and improving cleaning efficiency. Simultaneously, the water from the reservoir flows into the tailwater tank, diluting the tailwater and significantly reducing eutrophication, improving tailwater quality, and ensuring its reuse. Once the inflow and outflow in the tailwater tank reach equilibrium, the water level drops, causing the float to descend. The float moves the other end of the lever upwards, pulling the rod and the baffle plate upwards along with the lever. The baffle plate then blocks the outlet pipe and connecting pipe again, stopping the water discharge from the reservoir and allowing normal filtration in the tailwater tank.

[0008] Optionally, the primary filtration device includes a baffle plate installed in the tailwater tank. The baffle plate is mesh-like, and a cashmere strip is installed on the side of the baffle plate away from the secondary filtration device, which can cover the baffle plate.

[0009] By adopting the above technical solution, when the user uses the product, impurities and excess bait in the tailwater are intercepted by the cashmere cotton strips. The impurities and excess bait remain on the cashmere cotton strips, and the tailwater passes normally through the cashmere cotton strips and the baffle plate, preventing impurities and excess bait in the tailwater from flowing away with it, thus reducing the eutrophication of the tailwater.

[0010] Optionally, the secondary filtration device includes a drive plate disposed in the tailwater tank. The drive plate is located on the side of the baffle away from the cashmere sliver. The drive plate is configured in a mesh shape, and the ultrafiltration sliver covers the drive plate.

[0011] By adopting the above technical solution, the drive plate supports the ultrafiltration cotton strip during use, ensuring the flatness of the ultrafiltration cotton strip and improving the filtration effect of the ultrafiltration cotton strip.

[0012] Optionally, a roller is provided on the top of the baffle plate, one end of the cashmere sliver is connected to the roller, the roller is axially arranged along the width direction of the tailwater pool, a winding motor is provided at the position of the roller on the baffle plate, the output shaft of the winding motor is arranged along the axial direction of the roller, and the output shaft of the winding motor is fixedly connected to the roller.

[0013] By adopting the above technical solution, when users need to clean cashmere slivers, they simply start the winding motor, which drives the winding roller to rotate. The cashmere slivers wind onto the roller as it rotates, and then the slivers are unwound from the roller for cleaning. Workers do not need to enter the tailwater pool to clean the cashmere slivers, ensuring their safety. Furthermore, underwater cleaning is more difficult than surface cleaning, thus improving cleaning efficiency.

[0014] Optionally, a gravity bar is connected to the end of the cashmere sliver away from the roller.

[0015] By adopting the above technical solution, when the user uses the product, the cashmere sliver is subjected to a vertically downward force by the gravity bar, preventing the cashmere sliver from failing to unfold properly and completely cover the baffle, thus improving filtration quality. When the rollers wind and unwind the cashmere sliver, the gravity bar prevents the sliver from bending or tangling, improving work efficiency.

[0016] Optionally, a burr roller is provided near the position of the roller on the baffle plate. The burr roller is arranged parallel to the axial direction of the roller and can abut against the cashmere sliver.

[0017] By adopting the above technical solution, when the user uses the roller to perform the winding operation, the burr roller continuously scrapes against the cashmere sliver as it winds around the roller. Some cashmere fibers and impurities on the cashmere sliver can be scraped off or wrapped around the burr roller, further cleaning the cashmere sliver, improving the cleaning speed and effect, and ensuring the filtration effect of the cashmere sliver.

[0018] Optionally, a collection box is provided at the bottom of the tailwater tank near the drive plate. The collection box is connected to a collection rod, and the other end of the collection rod is connected to a lever near the float. Multiple water-permeable holes are provided at the bottom of the collection box, and a cashmere cotton block is provided at the bottom of the collection box to cover the bottom of the collection box.

[0019] By adopting the above technical solution, when the user uses the device, the float rises with the water level, causing the lever, collection rod, and collection box to move upwards together. The accumulated tailwater passes through the cashmere cotton blocks inside the collection box, which further intercept and filter out any remaining impurities and excess bait, improving the filtration effect. When the collection box is underwater and not lifted by the float, larger impurities can fall onto the cashmere cotton blocks, facilitating timely cleaning of the impurities inside once the collection box is lifted by the float.

[0020] Optionally, the collection box is fixedly connected to the ultrafiltration cotton strip on the side near the drive plate, and the bottom of the ultrafiltration cotton strip is fixedly connected to the collection box.

[0021] By adopting the above technical solution, when the collection box rises, the bottom of the ultrafiltration cotton strip is lifted, and the bottom of the ultrafiltration cotton strip no longer completely covers the drive plate. A large amount of tailwater can flow away quickly through the pores of the drive plate. At the same time, impurities and excess bait cleaned by the spray pipe pass through the cashmere cotton block in the collection box along with the accumulated tailwater, improving the filtration effect. Simultaneously, it ensures that the cleaned impurities and excess bait do not pass through the pores of the drive plate with the tailwater, reducing eutrophication of the tailwater.

[0022] Optionally, a receiving plate is connected to the side of the collection box near the drive plate, and the end of the receiving plate away from the collection box abuts against the ultrafiltration cotton strip.

[0023] By adopting the above technical solution, when the user uses the product, as the receiving plate moves upward with the collection box, the receiving plate abuts against the ultrafiltration cotton strip and scrapes it. While cleaning the ultrafiltration cotton strip, it also ensures that the impurities and excess bait washed down from the spray pipe can fall onto the cashmere cotton block in the collection box through the receiving plate, thus improving the cleaning effect on the ultrafiltration cotton strip.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. The design of the secondary filtration device, dilution device, lever, float, pull rod, baffle, connecting ring, outlet pipe, connecting pipe, flushing pipe, and spray pipe ensures improved water permeability of the ultrafiltration cotton strips after rinsing, guaranteeing the cleanliness and filtration effect of the ultrafiltration cotton strips. It also ensures normal water flow, extends the service life of the ultrafiltration cotton strips, saves on manual cleaning costs, and improves cleaning efficiency. Simultaneously, the effluent in the tailwater tank is diluted, significantly reducing eutrophication and ensuring its reuse.

[0025] 2. The design of the winding roller and the take-up motor ensures that workers do not need to enter the tailwater pool to clean the cashmere slivers, thus ensuring the personal safety of the workers;

[0026] 3. The design of the collection box, collection rod, and cashmere cotton block improves the filtration effect and ensures that the cleaned-up impurities and excess feed do not pass through the pores of the drive plate with the tailwater, thus reducing the eutrophication of the tailwater. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 This is a schematic diagram of the structure of a primary filtration device according to an embodiment of this application; Figure 3 This is a cross-sectional view of the dilution device structure according to an embodiment of this application; Figure 4 This is a cross-sectional view of the collection box structure according to an embodiment of this application.

[0028] Explanation of reference numerals in the attached diagram: 1. Tailwater tank; 2. Connecting pipe; 3. Ecological pond; 31. Hanging cage; 32. Floating bed; 4. Primary filtration device; 41. Baffle plate; 42. Support block; 43. Roller; 431. Winding motor; 432. T-slot; 433. T-block; 434. Cashmere sliver; 435. Gravity bar; 44. Burr roller; 45. Burr motor; 5. Secondary filtration device; 51. Drive plate; 52. Ultrafiltration device; 6. Filter strip; 7. Water storage tank; 8. Water outlet pipe; 9. Connecting pipe; 10. Flushing pipe; 11. Spray pipe; 2. Spray hole; 3. Dilution device; 4. Toggle lever; 5. Float ball; 6. Pulling rod; 7. Limiting rod; 8. Locking strip; 9. Limiting ring; 10. Water baffle; 11. Connecting ring; 12. Collection box; 13. Collection rod; 24. Water permeable hole; 35. Cashmere cotton block; 46. Receiving plate. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0030] This application discloses a cage-floating bed combined with shellfish-algae-plant symbiotic tailwater purification device.

[0031] Reference Figure 1 A tailwater purification device combining a cage and a floating bed for shellfish, algae, and plant symbiosis includes a tailwater pool 1. A connecting pipe 2 is fixedly connected to the bottom of the tailwater pool 1. An ecological pool 3 is fixedly connected to the end of the connecting pipe 2 away from the tailwater pool 1. A cage 31 is placed in the ecological pool 3. A floating bed 32 is fixedly connected to the inner wall of the cage 31. Shellfish, algae, and halophytes are placed on both the cage 31 and the floating bed 32.

[0032] Reference Figure 1and Figure 2 A primary filtration device 4 is installed in the tailwater tank 1. The primary filtration device 4 includes a baffle plate 41 fixedly connected to the tailwater tank 1. The baffle plate 41 is mesh-like and vertically arranged. A support block 42 is fixedly connected to the top of the baffle plate 41. The length of the support block 42 is along the width of the tailwater tank 1. A roller 43 is rotatably connected to the support block 42 near its bottom. The axial direction of the roller 43 is along the length of the support block 42. A winding motor 431 is fixedly connected to the support block 42 at the position corresponding to the roller 43. The output shaft of the winding motor 431 is along the length of the support block 42 and passes through the support block 42 to be fixedly connected to the roller 43. The roller 43 has a T-slot 432 along its own axial direction (see reference). Figure 4 A T-shaped block 433 is slidably connected to the roller 43 within the T-slot 432. The T-shaped block 433 can move along the axis of the roller 43. A cashmere sliver 434 is fixedly connected to the side of the T-shaped block 433 away from the roller 43. The cashmere sliver 434 can be wound around the roller 43, and when unfolded, it can cover the baffle 41. A gravity rod 435 is fixedly connected to the end of the cashmere sliver 434 away from the roller 43. The axial direction of the gravity rod 435 is parallel to the axial direction of the roller 43. A burr roller 44 is rotatably connected to the support block 42 near the roller 43. The axial direction of the burr roller 44 is parallel to the axial direction of the roller 43. The burr roller 44 can abut against the cashmere sliver 434, and multiple burrs are distributed on the outer circumferential surface of the burr roller 44. A burr motor 45 is fixedly connected to the support block 42 at the position corresponding to the burr roller 44. The output shaft of the burr motor 45 passes through the support block 42 and is fixedly connected to the burr roller 44.

[0033] When the user operates the system, the wastewater first passes through ecological pond 3. In ecological pond 3, cages 31 and floating beds 32 are placed with a large number of shellfish, algae, and halophytes. Shellfish can include oysters, scallops, and mussels; algae can include *Isochrysis galbana*, *Spirulina*, *Ulva prolifera*, and *Gracilaria*; and halophytes can include *Portulaca oleracea* and *Suaeda salsa*. Utilizing the shellfish's ability to filter small suspended solids and small algae, and the algae and halophytes' ability to absorb nitrogen and phosphorus from the seawater aquaculture wastewater, the system effectively reduces suspended solids, COD, and nitrogen and phosphorus nutrients, improving water purification efficiency and reducing purification costs. Cages 31 and floating beds 32 facilitate the attachment of organisms and allow users to easily release and retrieve them. Users can also remove cages 31 and floating beds 32 from ecological pond 3 for timely cleaning of excrement and uneaten feed produced by the organisms, preventing siltation, decay, and secondary pollution. The effluent from the ecological pond 3 enters the effluent pond 1 through the connecting pipe 2. Impurities and excess feed in the effluent are intercepted by the cashmere cotton strips 434. The cashmere cotton strips 434 can intercept impurities and allow the filtered effluent to pass normally through the baffle 41, ensuring that the filtered effluent is free of impurities and excess feed, thus reducing eutrophication of the effluent from a physical perspective. When enough impurities are intercepted by the cashmere cotton strips 434, the winding motor 431 and the deburring motor 45 are started. The winding motor 431 drives... The winding roller 43 rotates, and the winding roller 43 can wind the cashmere cotton sliver 434 around itself. During the winding process of the winding roller 43, the burr motor 45 drives the burr roller 44 to rotate. The burrs on the burr roller 44 continuously scrape and clean the cashmere cotton sliver 434 during winding. Some impurities can be wrapped around the burr roller 44 along with a small amount of cashmere cotton fibers. Some impurities fall directly into the water in the tailwater pool 1, waiting for the next stage of filtration. Some impurities and a small amount of cashmere cotton fibers on the burr roller 44 can be manually cleaned in time. The burr roller 44 cleans the impurities and excess feed adsorbed on the cashmere sliver 434, ensuring the continuous filtration effect of the cashmere sliver 434 and preventing clogging. It also prevents the impurities adsorbed on the cashmere sliver 434 from remaining in the tailwater, further reducing eutrophication. This eliminates the need for manual cleaning of the cashmere sliver 434, saving time and manpower. The gravity rod 435 applies a downward vertical force to the cashmere sliver 434, ensuring it fully unfolds and covers the baffle 41, improving filtration quality. It also prevents the cashmere sliver 434 from bending or tangling during winding by the roller 43, and ensures it moves quickly downwards and unfolds during unwinding, improving work efficiency.

[0034] Reference Figure 1 and Figure 3A secondary filtration device 5 is installed in the tailwater tank 1 near the primary filtration device 4. The secondary filtration device 5 includes a drive plate 51 fixedly connected to the tailwater tank 1. The drive plate 51 is vertically arranged and located on the side of the baffle plate 41 away from the cashmere cotton strips 434. The drive plate 51 is mesh-like. Ultrafiltration cotton strips 52 are glued to the side of the drive plate 51 near the baffle plate 41, covering the drive plate 51. The ultrafiltration cotton strips 52 and the drive plate 51 are glued together by Velcro at the four corners of the drive plate 51.

[0035] When the user uses the product, the wastewater treated by the cashmere cotton strip 434 and the burr roller 44 flows to the ultrafiltration cotton strip 52 for further filtration after passing through the baffle plate 41. The ultrafiltration cotton strip 52 further improves the filtration effect. The Velcro ensures the detachability of the ultrafiltration cotton strip 52, making it convenient for workers to replace the ultrafiltration cotton strip 52.

[0036] Reference Figure 3 and Figure 4 A water storage tank 6 is fixedly connected to the top of the tailwater tank 1. A water outlet pipe 61 is fixedly connected to the water storage tank 6. A connecting pipe 62 is fixedly connected to the top of the tailwater tank 1 near the water outlet pipe 61. A flushing pipe 63 is fixedly connected to the end of the connecting pipe 62 away from the water outlet pipe 61. A spray pipe 64 is fixedly connected to the end of the flushing pipe 63 away from the connecting pipe 62. The axial direction of the spray pipe 64 is along the width direction of the tailwater tank 1. Multiple spray holes 641 are provided on the spray pipe 64, arranged sequentially along the axial direction of the spray pipe 64, with the spray holes 641 facing the ultrafiltration cotton.

[0037] Reference Figure 3 and Figure 4A dilution device 7 is installed near the secondary filtration device 5 in the tailwater tank 1, located between the secondary filtration device 5 and the primary filtration device 4. The dilution device 7 includes a lever 71 rotatably connected to the tailwater tank 1, with the lever 71's rotation axis horizontally positioned. The center of the lever 71 is rotatably connected to the inner wall of the tailwater tank 1. A float 72 is fixedly connected to the end of the lever 71 away from the drive plate 51. A pull rod 73 is rotatably connected to the end of the lever 71 away from the float 72, and the pull rod 73 is vertically positioned. A locking strip 74 is fixedly connected inside the tailwater tank 1 at a position corresponding to below the lever 71. The locking strip 74 is located below the pull rod 73 and can abut against the lever 71. A limiting rod 731 is fixedly connected to the inner wall of the tailwater tank 1 at a position corresponding to the pull rod 73, and the limiting rod 731 is positioned along the axial direction of the spray pipe 64. A limiting rod 731 is fixedly connected to a limiting ring 75, and a pulling rod 73 is inserted into the limiting ring 75. A baffle plate 76 is fixedly connected to the end of the pulling rod 73 furthest from the lever 71. The diameter of the pulling rod 73 is greater than the thickness of the baffle plate 76, and the diameter of the pulling rod 73 is greater than the length of the gap between the outlet pipe 61 and the connecting pipe 62. The baffle plate 76 is located between the outlet pipe 61 and the connecting pipe 62, with both ends of the outlet pipe 61 and the connecting pipe 62 abutting against the baffle plate 76. The baffle plate 76 completely covers the cross-sections of the outlet pipe 61 and the connecting pipe 62. A connecting ring 77 is fixedly connected to the top of the baffle plate 76, and the diameter of the connecting ring 77 is the same as the diameter of both the outlet pipe 61 and the connecting pipe 62.

[0038] When the user uses it, the water permeability of the ultrafiltration cotton strip 52 is less than that of the cashmere cotton strip 434. As the ultrafiltration cotton strip 52 filters, impurities and excess bait accumulate on it, weakening its water permeability. The inflow of water into the tailwater tank 1 exceeds the outflow, causing the water level in the tailwater tank 1 to rise. This causes the float 72 to rise. After the float 72 rises, the pull rod 73 at the other end of the lever 71 descends. The pull rod 73 moves the baffle plate 76 and the connecting ring 77 downwards. The connecting ring 77 moves to the position of the outlet pipe 61 and the connecting pipe 62. One end of the lever 71 connected to the pull rod 73 abuts against the locking strip 74 to prevent the water level from becoming too high. The lever 71 and the pull rod 73 continue to move the connecting ring 77 downwards, ensuring that the connecting ring 77 can fully connect the outlet pipe 61 and the connecting pipe 62, thus ensuring normal connection between the outlet pipe 61 and the connecting pipe 62. Water in the reservoir 6 flows sequentially through the outlet pipe 61, connecting pipe 62, flushing pipe 63, and spray pipe 64. The water in the reservoir 6 is finally sprayed out from the spray hole 641 of the spray pipe 64, rinsing away a large amount of impurities and excess feed from the ultrafiltration cotton strips 52. After rinsing, the permeability of the ultrafiltration cotton strips 52 is improved, and the inflow and outflow of the tailwater tank 1 return to equilibrium, ensuring normal water flow. Simultaneously, the ultrafiltration cotton strips 52 are cleaned, extending their service life, saving on manual cleaning costs, and improving cleaning efficiency. Meanwhile, the flushing water flows into the tailwater tank 1, further diluting the water in the tailwater tank 1, significantly reducing eutrophication problems in the tailwater, improving tailwater quality, and enabling the reuse of the tailwater. After the inflow and outflow of water in tailrace tank 1 reach equilibrium, the water level drops, the float 72 descends, and the lever 71 drives the pull rod 73 and the baffle plate 76 to rise. The baffle plate 76 then blocks the flow of water through the outlet pipe 61 and the connecting pipe 62, achieving normal filtration within tailrace tank 1. Since the diameter of the pull rod 73 is greater than the length of the gap between the outlet pipe 61 and the connecting pipe 62, the pull rod 73 itself acts as a limiting device. This prevents the pull rod 73 from pushing the baffle plate 76 upwards when the water level is too low, thus avoiding gaps between the baffle plate 76, the connecting pipe 62, and the outlet pipe 61, and preventing leakage.

[0039] Reference Figure 3 and Figure 4A collection box 8 is placed at the bottom of the tailwater tank 1 near the drive plate 51. A collection rod 81 is fixedly connected to the center of the collection box 8. The end of the collection rod 81 away from the collection box 8 is rotatably connected to the lever 71 near the float 72. The side of the collection box 8 near the drive plate 51 is fixedly connected to the ultrafiltration cotton strip 52, and the bottom of the ultrafiltration cotton strip 52 is fixedly connected to the collection box 8. Multiple water permeable holes 82 are opened at the bottom of the collection box 8. A cashmere cotton block 83 is glued to the bottom of the collection box 8, covering the bottom of the collection box 8 and the water permeable holes 82. The cashmere cotton block 83 and the collection box 8 are glued together by Velcro. The collection rod 81 passes through the cashmere cotton block 83 and is fixedly connected to the collection box 8. A receiving plate 84 is fixedly connected to the side of the collection box 8 near the drive plate 51. The receiving plate 84 is located near the top of the collection box 8, and the end of the receiving plate 84 away from the collection box 8 abuts against the ultrafiltration cotton strip 52.

[0040] When the user operates the device, as the water level in the tailwater tank 1 rises, the float 72 rises, causing the lever 71 to rotate. The lever 71 then causes the collecting rod 81 to rise, which in turn causes the collecting box 8, the cashmere cotton block 83, and the receiving plate 84 to rise. During the rise of the collecting box 8 and the cashmere cotton block 83, the collecting box 8 lifts the bottom of the ultrafiltration cotton strip 52, so the bottom of the ultrafiltration cotton strip 52 no longer completely covers the drive plate 51. A large amount of tailwater can then flow away quickly through the pores of the drive plate 51. At the same time, the impurities and excess feed cleaned by the spray pipe 64 and the receiving plate 84 pass through the cashmere cotton block 83 in the collecting box 8 along with the accumulated tailwater. The cashmere cotton block 83 can then intercept and filter the cleaned impurities and excess feed again, improving the filtration effect. This also prevents the cleaned impurities and excess feed from passing through the pores of the drive plate 51 with the tailwater. The accumulated tailwater can also flow away quickly through the pores of the drive plate 51 after passing through the cashmere cotton block 83. As the ultrafiltration cotton strip 52 rises, the receiving plate 84 abuts against it, ensuring that impurities and excess feed washed down by the spray pipe 64 can fall onto the cashmere cotton block 83 in the collection box 8. Simultaneously, the receiving plate 84 scrapes the ultrafiltration cotton strip 52, improving its cleaning effect. As the collection box 8 moves the ultrafiltration cotton strip 52 upwards, the Velcro fasteners adhering to the bottom of the ultrafiltration cotton strip 52 and the drive plate 51 are pulled apart, allowing the bottom of the ultrafiltration cotton strip 52 to move upwards. The friction between the bottom and the middle of the ultrafiltration cotton strip 52 also cleans the attached impurities. After friction, the impurities detach from the ultrafiltration cotton strip 52 and flow with the tailwater through the cashmere cotton block 83, further improving filtration efficiency. After a period of time, the cashmere cotton block 83 can be removed and replaced to prevent impurities and excess feed washed off the ultrafiltration cotton strip 52 from accumulating at the bottom of the tailwater pool 1 and the ultrafiltration cotton strip 52, thereby further reducing the eutrophication of the tailwater.

[0041] The implementation principle is as follows: When the effluent passes through the ecological pond 3, the large number of shellfish, algae, and halophytes on the hanging cages 31 and floating beds 32 in the ecological pond 3 interact with each other, improving the water purification efficiency and reducing the purification cost. After being treated in the ecological pond 3, the effluent enters the effluent pool 1 through the connecting pipe 2. The cashmere cotton strips 434 intercept impurities and excess feed in the effluent. The filtered effluent flows normally through the baffle 41, ensuring that there are no impurities or excess feed in the filtered effluent. After passing through the cashmere cotton strips 434 and the baffle 41, the effluent flows through the ultrafiltration cotton strips 52 for further filtration, which further improves the filtration effect. During the filtration process of the ultrafiltration cotton strip 52, impurities and excess feed accumulate on it, weakening its water permeability. The water level in the tailwater tank 1 rises, causing the float 72 to rise with it and lowering the pull rod 73 at the other end of the lever 71. The baffle plate 76 and connecting ring 77 move downwards along with the pull rod 73, changing the state where the outlet pipe 61 and connecting pipe 62 are blocked by the baffle plate 76 to a state where they are connected by the connecting ring 77. The water storage tank 6... Water flows through outlet pipe 61, connecting pipe 62, flushing pipe 63, and spray pipe 64. The spray nozzles 641 of spray pipe 64 spray water to flush away a large amount of impurities and excess feed from the ultrafiltration cotton strips 52. After flushing, the permeability of the ultrafiltration cotton strips 52 increases, the water level drops, the float 72 descends, and the lever 71 drives the pull rod 73 and the baffle plate 76 to rise. The outlet pipe 61 and connecting pipe 62 are then blocked again by the baffle plate 76, ensuring normal filtration in the tailwater tank 1. This process cleans the ultrafiltration cotton strips 52, extending their service life and improving cleaning efficiency. Simultaneously, the flushing water flows into the tailwater tank 1, diluting the water and further reducing eutrophication, improving tailwater quality, and enabling the reuse of the tailwater.

[0042] As the float 72 rises, the lever 71 rotates, and the collecting rod 81 rises along with the float 72. The collecting box 8, the cashmere cotton block 83, and the receiving plate 84 rise along with the collecting rod 81. During the rise of the collecting box 8 and the cashmere cotton block 83, the collecting box 8 causes the bottom of the ultrafiltration cotton strip 52 to lift, and the bottom of the ultrafiltration cotton strip 52 no longer completely covers the drive plate 51. A large amount of tailwater can pass through the pores of the drive plate 51. At the same time, the impurities and excess bait cleaned by the spray pipe 64 can be filtered out by the cashmere cotton block 83 in the collecting box 8, improving the filtration effect and preventing the cleaned impurities and excess bait from passing through the pores of the drive plate 51 with the tailwater. The accumulated tailwater can also quickly flow away through the pores of the drive plate 51 after passing through the cashmere cotton block 83, ensuring that the water level in the tailwater pool 1 can drop in time, ensuring the rapid recovery of the two-stage filtration operation, and preventing the tailwater from overflowing from the tailwater pool 1.

[0043] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A suspended floating bed combined with shellfish and algae symbiotic tailwater purification device, comprising the tailwater pool (1), characterized in that: The tailwater tank (1) is connected to an ecological pond (3). A primary filtration device (4) is installed in the tailwater tank (1). A secondary filtration device (5) is installed in the tailwater tank (1) near the primary filtration device (4). The secondary filtration device (5) includes ultrafiltration cotton strips (52) installed in the tailwater tank (1). The secondary filtration device (5) is connected to a dilution device (7). The dilution device (7) is located between the secondary filtration device (5) and the primary filtration device (4). 7) Includes a lever (71) rotatably connected to the tailrace tank (1), with a float (72) fixedly connected to one end of the lever (71) away from the tailrace tank (1), and a pull rod (73) rotatably connected to the other end of the lever (71) away from the float (72). A locking strip (74) is provided in the tailrace tank (1) at a position corresponding to the lower part of the lever (71), the locking strip (74) being located at the position of the lever (71) away from the float (72), and the locking strip (74) being able to abut against the lever (71). 73) A baffle plate (76) is fixedly connected to the end away from the lever (71). A water storage tank (6) is set on the top of the tailwater tank (1). The water storage tank (6) is connected to the water outlet pipe (61). A connecting pipe (62) is connected to the top of the tailwater tank (1) near the water outlet pipe (61). A flushing pipe (63) is connected to the end of the connecting pipe (62) away from the water outlet pipe (61). A spray pipe (64) is fixedly connected to the flushing pipe (63). The spray pipe (64) has multiple spray holes (641). The spray hole (641) is set towards the ultrafiltration cotton strip (52). The baffle plate (76) is located between the water outlet pipe (61) and the connecting pipe (62). The water outlet pipe (61) and the connecting pipe (62) are close to each other and can both abut against the baffle plate (76). The baffle plate (76) is set to completely cover the cross section of the water outlet pipe (61) and the connecting pipe (62). The baffle plate (76) is connected to a connecting ring (77), which can abut against the water outlet pipe (61) and the connecting pipe (62).

2. The tailwater purification device combining a suspended floating bed and shellfish / algae symbiosis as described in claim 1, characterized in that: The primary filtration device (4) includes a baffle (41) installed in the tailwater tank (1). The baffle (41) is mesh-like. A cashmere strip (434) is installed on the side of the baffle (41) away from the secondary filtration device (5). The cashmere strip (434) can cover the baffle (41).

3. The tailwater purification device combining a suspended floating bed and shellfish / algae symbiosis as described in claim 2, characterized in that: The secondary filtration device (5) includes a drive plate (51) installed in the tailwater tank (1). The drive plate (51) is located on the side of the baffle plate (41) away from the cashmere cotton strip (434). The drive plate (51) is mesh-shaped, and the ultrafiltration cotton strip (52) covers the drive plate (51).

4. The tailwater purification device combining a suspended floating bed and shellfish / algae symbiosis as described in claim 2, characterized in that: A roller (43) is provided on the top of the baffle plate (41). One end of the cashmere sliver (434) is connected to the roller (43). The roller (43) is axially arranged along the width direction of the tailwater pool (1). A winding motor (431) is provided on the baffle plate (41) at the position corresponding to the roller (43). The output shaft of the winding motor (431) is arranged along the axial direction of the roller (43). The output shaft of the winding motor (431) is fixedly connected to the roller (43).

5. The tailwater purification device combining a suspended floating bed and shellfish / algae symbiosis as described in claim 4, characterized in that: The cashmere sliver (434) is connected to a gravity bar (435) at the end away from the roller (43).

6. The tailwater purification device combining a suspended floating bed and shellfish / algae symbiosis as described in claim 4, characterized in that: The baffle plate (41) is provided with a burr roller (44) near the winding roller (43). The axial direction of the burr roller (44) is parallel to that of the winding roller (43), and the burr roller (44) can abut against the cashmere sliver (434).

7. The tailwater purification device combining a suspended floating bed and shellfish / algae symbiosis as described in claim 3, characterized in that: A collection box (8) is provided at the bottom of the tailwater tank (1) near the drive plate (51). The collection box (8) is connected to a collection rod (81). The other end of the collection rod (81) is connected to the lever (71) near the float (72). Multiple water-permeable holes (82) are provided at the bottom of the collection box (8). A cashmere cotton block (83) is provided at the bottom of the collection box (8). The cashmere cotton block (83) covers the bottom of the collection box (8).

8. The tailwater purification device combining a suspended floating bed and shellfish / algae symbiosis according to claim 7, characterized in that: The collection box (8) is fixedly connected to the ultrafiltration cotton strip (52) on the side near the drive plate (51), and the bottom of the ultrafiltration cotton strip (52) is fixedly connected to the collection box (8).

9. The tailwater purification device combining a suspended floating bed and shellfish / algae symbiosis as described in claim 7, characterized in that: The collection box (8) is connected to a receiving plate (84) on the side near the drive plate (51), and the end of the receiving plate (84) away from the collection box (8) abuts against the ultrafiltration cotton strip (52).

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