Physical removal and inactivation device for oocysts of spores in culture pond

Abstract

The invention relates to the field of fishery breeding, in particular to a physical removal and inactivation device for spore oocysts in a breeding pond, and provides the following scheme aiming at the problems that in the prior art, the spore oocysts in the breeding pond are not thoroughly removed, the inactivation efficiency is low, and water pollution is easily caused by chemical inactivation. The device comprises a filtering mechanism, a cleaning mechanism, an inactivation mechanism and a water dispersion mechanism, the filtering mechanism is used for primarily filtering sporocysts and impurities in the water body through an umbrella-shaped filter screen, and the cleaning mechanism can be used for synchronously scraping the filter screen and dredging meshes, so that the filtering efficiency is ensured; the inactivation mechanism is divided into a first inactivation cavity and a second inactivation cavity through a separation ring, and double physical inactivation of sporocarp oocysts is achieved through the nucleic acid destruction effect of an ultraviolet lamp and the cavitation effect of ultrasonic waves in sequence. The whole process adopts a physical mode for treatment, chemical pollution is avoided, all mechanisms operate in a linkage mode, the removal and inactivation efficiency is high, the maintenance difficulty is low, and the water purification requirements of various aquaculture ponds are met.

Description

Technical Field

[0001] This invention relates to the field of aquaculture, and in particular to a device for the physical removal and inactivation of oocysts of spore-forming insects in aquaculture ponds. Background Technology

[0002] In aquaculture, sporozoites are common parasites that harm farmed aquatic products. Their oocysts can spread widely in the aquaculture water. Once aquatic products are infected with sporozoites, they will experience problems such as slow growth and decreased survival rate, which will seriously affect the economic benefits of aquaculture.

[0003] Currently, the treatment methods for sporozoan oocysts in aquaculture ponds mainly fall into two categories: chemical inactivation and simple physical filtration. Chemical inactivation often involves adding various chemical agents to the water. While this can kill oocysts to some extent, the chemicals tend to remain in the water and aquatic organisms, disrupting the ecological balance of the pond and causing secondary pollution. Furthermore, long-term use can lead to drug resistance in the oocysts, gradually reducing the inactivation effect. Simple physical filtration uses ordinary filter screens for basic filtration. These screens are easily clogged by impurities and oocysts, resulting in rapid decline in filtration efficiency. Moreover, it only achieves basic oocyst retention and cannot effectively inactivate the retained oocysts, which can still multiply and spread on the filter screen surface, leading to incomplete removal. Therefore, this solution proposes a physical removal and inactivation device for sporozoan oocysts in aquaculture ponds. Summary of the Invention

[0004] The present invention proposes a physical removal and inactivation device for sporozoite oocysts in aquaculture ponds, which solves the problems of incomplete removal and low inactivation efficiency of sporozoite oocysts in aquaculture ponds in the prior art, and the easy pollution of water bodies caused by chemical inactivation.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A device for physical removal and inactivation of sporozoite oocysts in aquaculture ponds, comprising:

[0007] The filtration mechanism includes a filter box, a filter screen rotatably connected inside the filter box, and a rotating shaft rotatably connected to and coaxially arranged with the inner wall of the top of the filter box. The filter screen is sleeved on the outside of the rotating shaft. The bottom of the filter box has a discharge port and the top has a water inlet. A drive assembly for driving the rotating shaft to rotate is installed on the top of the filter box.

[0008] A cleaning mechanism, installed inside the filter box, is used to clean impurities from the filter screen surface and discharge them from the discharge port when the shaft rotates.

[0009] The inactivation mechanism includes an inactivation box installed at the bottom of the filter box and communicating therewith, and a partition ring coaxially fixed inside the inactivation box. The partition ring divides the interior of the inactivation box into an inner first inactivation chamber and an outer second inactivation chamber. The bottom of the partition ring is provided with an outlet communicating with the second inactivation chamber. The inactivation box is equipped with an inactivation component for physically inactivating the two inactivation chambers.

[0010] The water dispersion mechanism includes a drain pipe communicating with the second inactivation chamber and a water-dispersing assembly installed at the bottom of the inactivation chamber. The water-dispersing assembly is connected to a rotating shaft drive to disperse the water discharged from the water pipe.

[0011] The above technical solution achieves integrated operation of filtration, cleaning, inactivation, and water recirculation. The entire process uses physical methods to remove and inactivate oocysts of spores, fundamentally avoiding water pollution problems caused by chemical agents. The dual inactivation chamber design of the inactivation mechanism enables dual physical inactivation using ultraviolet light and ultrasound, significantly improving the inactivation effect of oocysts. The water dispersion mechanism completes aeration and dispersal during water recirculation, taking into account both water purification and dissolved oxygen replenishment in aquaculture ponds. The overall device has a compact structure, is suitable for on-site use in aquaculture ponds, and has high operational stability.

[0012] As a further improvement to the above solution, the top of the inactivation box is provided with a water inlet that communicates with the inside of the filter box, the inner diameter of the partition ring is larger than the inner diameter of the filter box, and the top of the partition ring is fixedly connected to the inner wall of the top of the inactivation box.

[0013] As a further improvement to the above solution, the drive assembly includes a mounting bracket mounted on the top of the filter box and a drive motor mounted on the top of the mounting bracket. The top of the rotating shaft extends above the top of the filter box and is connected to the output shaft of the drive motor via a coupling.

[0014] As a further improvement to the above solution, the filter screen has an umbrella-shaped structure, and the bottom edge of the filter screen is flush with the bottom of the discharge port.

[0015] As a further improvement to the above solution, the cleaning mechanism includes a baffle fixed inside the discharge port and arranged along the filter screen generatrix, and a spiral shaft rotatably connected inside the baffle. The bottom long side of the baffle abuts against the filter screen surface. One end of the spiral shaft is fixed with a linkage gear, and the outer circumference of the rotating shaft is sleeved with a drive bevel gear that meshes with the linkage gear. The outer circumference of the spiral shaft abuts against the filter screen surface.

[0016] As a further improvement to the above scheme, the inactivation assembly includes multiple ultraviolet lamps installed on the inner wall of the top of the first inactivation chamber and multiple ultrasonic inactivation assemblies installed on the inactivation box. The ultrasonic inactivation assembly includes an ultrasonic generator installed on the outer wall of the inactivation box and a transducer installed on the inner wall of the second inactivation chamber.

[0017] As a further improvement to the above scheme, multiple staggered baffles are evenly installed inside the second inactivation chamber, and two adjacent baffles are fixed to the bottom and top of the second inactivation chamber respectively, and gaps are left for water supply to pass through.

[0018] As a further improvement to the above solution, the water inlet end of the drain pipe is located on the top of the outer side of the inactivation box. The water-draining assembly includes a ring pipe fixed to the inner wall of the bottom of the inactivation box and an installation shaft rotatably connected to the inner wall of the bottom of the inactivation box and coaxial with the rotating shaft. The bottom of the rotating shaft is connected to the installation shaft through a speed increaser. The water outlet end of the drain pipe is connected to the inside of the ring pipe. Multiple drain ports are opened on the bottom surface of the ring pipe. Multiple drain plates located directly below the drain ports are fixed on the outer periphery of the installation shaft.

[0019] As a further improvement to the above solution, the baffle is an L-shaped structure, with the bottom surface of its long end abutting against the top surface of the filter screen, and its short end located directly above the spiral shaft. A drain pipe located on the bottom surface of the filter screen is installed inside the filter box. The drain pipe is arranged along the length of the spiral shaft and is located directly below it. Multiple air outlets are opened on the side of the drain pipe facing the bottom surface of the filter screen. An air distribution mechanism for supplying air to the drain pipe is installed on the top of the filter box.

[0020] As a further improvement to the above solution, the gas distribution mechanism includes two opposing gas cylinders installed on the top of the filter box, a connecting frame movably sleeved outside the rotating shaft, and a connecting pipe located on the inner wall of the top of the first inactivation chamber. The connecting pipe is connected to the inside of the unblocking pipe through a gas guide pipe. A piston plate is installed inside each of the two gas cylinders, and a piston rod is installed on each of the two piston plates along the axial direction of the gas cylinder. One end of each piston rod is fixedly connected to the two short sides of the connecting frame. An air inlet pipe and an air delivery pipe with a one-way valve are installed at the ends of the two gas cylinders that are far apart from each other. The other ends of the two air delivery pipes are connected to the connecting pipe. Multiple toothed grooves are opened on the inner walls of the two long sides of the connecting frame. An incomplete gear that alternately meshes with the toothed grooves on the inner sides of the two long sides of the connecting frame is sleeved on the outer circumference of the rotating shaft.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] 1. By setting up filtration and inactivation mechanisms, the water is first filtered to remove floating matter, oocysts, and fine impurities. Then, the inactivation mechanism physically inactivates the water. Ultraviolet light destroys the nucleic acid structure of the oocysts, achieving initial inactivation and preventing their replication. Ultrasonic waves destroy the cell membrane structure of the oocysts through cavitation, achieving further inactivation. This effectively avoids the pollution to the water caused by the use of chemical agents.

[0023] 2. By setting up a cleaning mechanism, the spiral shaft rotates while the filter screen rotates, so that the impurities filtered off the surface of the filter screen can be scraped off the surface and transported to the outside of the discharge port using the spiral shaft and scraper, which achieves the purpose of conveniently cleaning the filter screen and reduces the difficulty and cost of subsequent maintenance.

[0024] 3. By setting up a water dispersion mechanism, the rotation of the shaft drives the water-splashing plate to rotate, thereby dispersing the water discharged from the drain pipe and letting it fall back into the aquaculture pond. This not only helps the water to fall back into the aquaculture pond evenly and promotes water mixing, but also helps more oxygen dissolve in the water.

[0025] 4. By setting up a clearing plate and an air distribution mechanism, the rotation of the shaft drives the air distribution component to operate, which can easily pass through or blow out the impurities clogging the mesh of the filter screen, effectively ensuring that the filter screen maintains high filtration efficiency and extending the service life of the filter screen. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the present invention;

[0027] Figure 2 This is a cross-sectional view of the inactivation chamber and the filter chamber;

[0028] Figure 3 A schematic diagram of the water dispersion mechanism at the bottom of the inactivation chamber;

[0029] Figure 4 This is a schematic diagram of the structure of the first inactivation chamber and the second inactivation chamber;

[0030] Figure 5 This is a schematic diagram of the gas distribution mechanism;

[0031] Figure 6 This is a structural diagram of the cleaning mechanism and the unblocking board;

[0032] Figure 7 This is a schematic diagram of the structure of the helical shaft, the linkage gear, and the driving bevel gear.

[0033] Explanation of key symbols:

[0034] 1. Inactivation box; 2. Filter box; 3. Sludge discharge port; 4. Electrical control box; 5. Drain pipe; 6. Ultrasonic generator; 7. Water-splashing plate; 8. Mounting shaft; 9. Drive motor; 10. Water inlet; 11. Air cylinder; 12. Air supply pipe; 13. Transducer; 14. Baffle; 15. Ultraviolet lamp; 16. Filter screen; 17. Baffle; 18. Drive bevel gear; 19. Separating ring; 20. Ring pipe; 21. Drain port; 22. Water outlet; 23. Connecting pipe; 24. Rotating shaft; 25. Piston rod; 26. Connecting frame; 27. Incomplete gear; 28. Air inlet pipe; 29. ​​Spiral shaft; 30. Unblocking pipe; 31. Air guide pipe; 32. Linkage gear. Detailed Implementation

[0035] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0036] Example 1:

[0037] Please combine Figure 1 - Figure 7 This embodiment of a device for physical removal and inactivation of oocysts of spore-forming parasites in aquaculture ponds includes:

[0038] The filtration mechanism includes a filter box 2, a filter screen 16 rotatably connected inside the filter box 2, and a rotating shaft 24 rotatably connected to and coaxially arranged with the inner wall of the top of the filter box 2. The filter screen 16 is coaxially sleeved on the outside of the rotating shaft 24. A discharge port 3 is provided at the bottom of one side of the filter box 2, and a water inlet 10 is provided at the top of the filter box 2. A drive assembly for driving the rotating shaft 24 to rotate is installed on the top of the filter box 2. The drive assembly includes a mounting bracket installed on the top of the filter box 2 and a transmission motor 9 installed on the top of the mounting bracket. The top of the rotating shaft 24 extends to the top of the filter box 2 and is connected to the output shaft of the transmission motor 9 through a coupling. The transmission motor 9 provides stable power output to the rotating shaft 24. The coupling ensures the coaxiality of the transmission between the output shaft of the transmission motor 9 and the rotating shaft 24, avoids wobbling during the rotation of the rotating shaft 24, and ensures that the filter screen, cleaning mechanism, air distribution mechanism, and water dispersion mechanism can all operate stably and in conjunction with the rotating shaft.

[0039] The cleaning mechanism is installed inside the filter box 2 and is used to clean the impurities on the surface of the filter screen 16 when the rotating shaft 24 rotates and discharge them from the discharge port 3. The filter screen 16 has an umbrella-shaped structure, and the bottom edge of the filter screen 16 is flush with the bottom of the discharge port 3. Compared with the traditional flat filter screen, the effective filtration area of ​​the umbrella-shaped filter screen 16 is greatly increased, the filtration load per unit area is reduced, and the efficiency and effect of water filtration are improved. At the same time, the inclined structure of the umbrella shape makes it easy for impurities to slide to the bottom of the filter screen 16 under the action of gravity.

[0040] The cleaning mechanism includes a baffle 17 fixed inside the discharge port 3 and arranged along the generatrix of the filter screen 16, and a spiral shaft 29 rotatably connected to the inside of the baffle 17 along the generatrix of the filter screen 16. The baffle 17 is located on one side of the spiral shaft 29 and abuts against the surface of the filter screen 16. A linkage gear 32 coaxially arranged with the spiral shaft 29 is fixed at one end of the spiral shaft 29 near the rotating shaft 24. A drive bevel gear 18 meshing with the linkage gear 32 is sleeved on the outer circumference of the rotating shaft 24. The outer circumference of the spiral shaft 29 abuts against the surface of the filter screen 16. When the rotating shaft 24 rotates, the drive bevel gear 18 and the linkage gear 32 mesh and drive the transmission. The cleaning mechanism realizes the automatic discharge of impurities. The baffle 17 and the spiral shaft 29 cooperate to complete the scraping and cleaning of the surface of the filter screen 16 and realize the directional conveying of impurities. The cleaning effect is good, and it operates in linkage with the rotating shaft 24 without the need for an additional power source, which simplifies the structure of the device.

[0041] The inactivation mechanism includes an inactivation chamber 1 installed at the bottom of and communicating with the filter box 2, and a partition ring 19 coaxially fixed inside the inactivation chamber 1. The partition ring 19 divides the interior of the inactivation chamber 1 into a first inactivation chamber located inside the partition ring 19 and a second inactivation chamber located between the outer ring of the partition ring 19 and the inner ring of the inactivation chamber 1. An outlet 22 communicating with the second inactivation chamber is provided on one side of the bottom of the partition ring 19. An inactivation assembly is installed on the inactivation chamber 1 to physically inactivate the sporocysts in the first and second inactivation chambers. The inactivation assembly includes multiple ultraviolet lamps 15 installed on the inner wall of the top of the first inactivation chamber and multiple ultrasonic inactivation assemblies installed on the inactivation chamber 1. The ultrasonic inactivation assembly includes an ultrasonic generator 6 installed on the outer wall of the inactivation chamber 1 and an ultrasonic generator 6 installed on the second inactivation chamber 1. The transducer 13 on the inner wall of the active chamber and the dual-inactivation chamber design of the inactivation mechanism enable dual physical inactivation of sporozoan oocysts by ultraviolet light and ultrasound, which greatly improves the inactivation effect of oocysts. The water first enters the first inactivation chamber, where the ultraviolet light emitted by the ultraviolet lamp 15 penetrates the water and destroys the nucleic acid structure of the sporozoan oocysts, causing them to lose their ability to replicate and reproduce, thus completing the initial inactivation. The water after ultraviolet inactivation enters the second inactivation chamber, where the high-frequency oscillation signal generated by the ultrasonic generator is converted into mechanical vibration by the transducer, forming a cavitation effect in the water and generating a large number of tiny cavitation bubbles. The energy released when the cavitation bubbles burst can destroy the cell membrane and cell wall of the sporozoan oocysts, thus completing the deep inactivation. The dual inactivation method greatly improves the inactivation rate of oocysts, and the physical inactivation leaves no residue and causes no pollution.

[0042] The water dispersion mechanism includes a drain pipe 5 installed on the outer periphery of the inactivation chamber 1 to drain water from the second inactivation chamber, and a water-splashing assembly installed at the bottom of the inactivation chamber 1 to disperse the water discharged from the drain pipe 5. The water-splashing assembly is drivenly connected to a rotating shaft 24. The connection point between the drain pipe 5 and the inactivation chamber 1 is located at the top outer side of the inactivation chamber 1. The water-splashing assembly includes a ring pipe 20 fixed to the inner wall of the bottom of the inactivation chamber 1 and a mounting shaft 8 rotatably connected to the inner wall of the bottom of the inactivation chamber 1 and coaxially arranged with the rotating shaft 24. The bottom of the rotating shaft 24 extends to the bottom of the inactivation chamber 1 and is drivenly connected to the mounting shaft 8 through a speed increaser. The outlet end of the drain pipe 5 communicates with the inside of the ring pipe 20. Multiple drain ports 21 are opened on the bottom surface of the ring pipe 20. The outer periphery of the mounting shaft 8 is fixed with... Multiple water-beating plates 7 are located directly below the drain outlet 21. They are used to disperse the water discharged from the drain outlet 21 after the mounting shaft 8 rotates. The speed increaser amplifies the rotation speed of the rotating shaft 24 and transmits it to the mounting shaft 8, causing the water-beating plates 7 to rotate at high speed. The multiple drain outlets 21 of the ring pipe 20 cause the water to fall evenly. The high-speed rotating water-beating plates 7 disperse the falling water into fine water droplets. On the one hand, the water droplets fall evenly back into the aquaculture pond, avoiding uneven water quality in some areas. On the other hand, it increases the contact area between the water and the air, allowing more oxygen to dissolve in the water. This achieves oxygenation while the water flows back, increasing the dissolved oxygen content of the aquaculture pond. The water-beating component is linked to the rotating shaft, requiring no additional power source, further reducing the energy consumption of the device.

[0043] In this embodiment, an electrical control box 4 is installed on the top of the inactivation box 1. The electrical control box 4 is electrically connected to the drive motor 9, the ultraviolet lamp 15, and the ultrasonic generator 16. The drive motor 9, the ultraviolet lamp 15, and the ultrasonic generator 16 can be turned on and off by the electrical control box.

[0044] The implementation principle of this embodiment is as follows: Before the device is put into operation, the water to be treated from the aquaculture pond is pumped to the inlet 10 of the filter box 2. Then, the drive motor 9, ultraviolet lamp 15 and ultrasonic generator 6 are started through the electrical control box 4. The drive motor 9 drives the rotating shaft 24 to rotate at a constant speed through the coupling. The rotating shaft 24 drives the umbrella-shaped filter screen 16 to rotate synchronously. After the water to be treated enters the filter box 2 through the inlet 10, it comes into full contact with the rotating filter screen 16. Floating matter, spore oocysts and fine impurities in the water are intercepted by the filter screen 16. The filtered water passes through the filter box. 2. The bottom enters the first inactivation chamber of the inactivation box 1; when the rotating shaft 24 rotates, it drives the spiral shaft 29 to rotate through the meshing transmission of the active bevel gear 18 and the linkage gear 32. When the rotating shaft 24 rotates, it drives the spiral shaft 29 to rotate synchronously through the meshing transmission of the active bevel gear 18 and the linkage gear 32. The rotating spiral shaft 29 pushes the intercepted impurities along the direction of the filter screen 16 towards the discharge port. The baffle 17 then scrapes and intercepts the impurities remaining on the surface of the filter screen 16. Finally, after accumulation, they are discharged by the spiral shaft 29, realizing real-time cleaning of the surface of the filter screen 16.

[0045] The water entering the first inactivation chamber is irradiated by the ultraviolet lamp 15, which destroys the nucleic acid structure of the oocysts of the spores, completing the initial inactivation. After initial inactivation, the water enters the second inactivation chamber through the bottom of the separator ring 19. The high-frequency oscillation signal generated by the ultrasonic generator 6 is converted into mechanical vibration by the transducer 13, forming a cavitation effect in the water in the second inactivation chamber, destroying the cell membrane and cell wall of the oocysts, completing the deep inactivation. After double inactivation, the water rises to the top of the outside of the inactivation box 1 in the second inactivation chamber, enters the ring pipe 20 through the drain pipe 5, and then falls evenly from multiple drain outlets 21 of the ring pipe 20. At the same time, the rotation of the rotating shaft 24 is amplified by the speed increaser, which drives the mounting shaft 8 to rotate at high speed. The mounting shaft 8 drives the water-beating plate 7 to rotate at high speed synchronously. The high-speed rotating water-beating plate 7 disperses the falling water into fine water droplets, which fall evenly back into the aquaculture pond, completing the removal and inactivation treatment of the entire water body.

[0046] Example 2:

[0047] Combination Figure 2 - Figure 4 This embodiment, based on Embodiment 1, further improves upon the following: Multiple baffles 14 are uniformly installed inside the second inactivation chamber. In two adjacent baffles 14, the bottom of one baffle 14 is fixedly connected to the bottom of the second inactivation chamber, and a first gap for water passage is provided between its top and the top of the second inactivation chamber. The top of the other baffle 14 is fixedly connected to the inner wall of the top of the second inactivation chamber, and a second gap for water passage is provided between its bottom and the inner wall of the bottom of the second inactivation chamber. The staggered baffles 14 form a serpentine water flow path within the second inactivation chamber, significantly extending the water's residence time within the chamber, allowing for more thorough interaction between the water and ultrasound, and enhancing the ultrasonic inactivation effect. Simultaneously, the serpentine flow path prevents short-circuiting and dead zones within the second inactivation chamber, ensuring that all water entering the chamber undergoes sufficient ultrasonic treatment, thus guaranteeing uniform inactivation.

[0048] The implementation principle of this embodiment is as follows: After the water body is initially inactivated by the ultraviolet lamp 15 in the first inactivation chamber, it enters the second inactivation chamber. Due to the setting of the staggered baffles 14, the water body cannot flow directly in a straight line. Instead, it forms a serpentine flow path in the second inactivation chamber, flowing in from the top or bottom gap of one baffle 14 and then flowing out from the bottom or top gap of the adjacent baffle 14, which greatly prolongs the residence time of the water body in the second inactivation chamber. During this process, the mechanical vibration generated by the ultrasonic generator 6 in conjunction with the transducer 13 continuously acts on the water body. The cavitation effect fully destroys the cell membrane and cell wall of the sporozoan oocysts, solving the problem of short residence time and insufficient inactivation of water body in the inactivation chamber in the existing device. This ensures that all water body entering the second inactivation chamber can undergo sufficient ultrasonic treatment, thereby improving the inactivation rate of sporozoan oocysts.

[0049] Example 3:

[0050] Combination Figure 2 and Figure 5 - Figure 7 This embodiment is an improvement on Embodiments 1 and 2, with the following improvements: the baffle 17 has an L-shaped structure, and the bottom surface of the long end of the baffle 17 abuts against the top surface of the filter screen 16. The short end of the baffle 17 is located directly above the spiral shaft 29. A clearing pipe 30 is installed inside the filter box 2, located on the bottom surface of the filter screen 16, and used to blow out impurities clogging the mesh of the filter screen 16 by outputting airflow. The clearing pipe 30 is arranged along the length of the spiral shaft 29 and is located directly below it. Multiple air outlets are opened on the side of the clearing pipe 30 facing the bottom surface of the filter screen 16. An air distribution mechanism for supplying air to the clearing pipe 30 is installed on the top of the filter box 2. The long end of the L-shaped baffle... The first end scrapes away impurities from the filter screen surface, while the second end blocks impurities blown up by the airflow in the cleaning pipe 30, preventing them from being blown away. The cleaning pipe 30 sprays air from the bottom surface of the filter screen 16 through the air outlet, blowing out small impurities and spore oocysts that are blocked in the mesh of the filter screen 16. Combined with the surface scraping of the cleaning mechanism, the filter screen 16 is cleaned more thoroughly, effectively preventing the mesh of the filter screen 16 from becoming clogged, ensuring that the filter screen 16 always maintains high-efficiency filtration performance, and extending the service life of the filter screen 16. In addition, the cleaning pipe 30 is set along the length of the spiral shaft 29 so that the area of ​​airflow dredging matches the area of ​​scraping and cleaning, improving the comprehensiveness of the cleaning of the filter screen 16.

[0051] The gas distribution mechanism includes two opposing gas cylinders 11 mounted on the top of the filter box 2, a connecting frame 26 movably mounted on the top surface of the filter box 2, and a connecting pipe 23 on the inner wall of the top of the first inactivation chamber. A guide pipe 31 communicating with the inside of the unblocking pipe 30 is installed on the connecting pipe 23. A piston plate is installed inside each of the two gas cylinders 11, and a piston rod 25 is mounted on each of the two piston plates along the axial direction of the gas cylinder 11. One end of each piston rod 25 is fixedly connected to the short sides of the two sides of the connecting frame 26. An inlet pipe 28 and a delivery pipe 12 are installed at the ends of the two gas cylinders 11 that are furthest from each other. A one-way valve is installed on both the inlet pipe 28 and the delivery pipe 12. The other end of the gas supply pipe 12 extends into the first inactivation chamber and connects to the connecting pipe 23. The connecting frame 26 is movably sleeved on the outside of the rotating shaft 24, and multiple toothed grooves are opened on the inner walls of the two long sides of the connecting frame 26. An incomplete gear 27 is sleeved on the outer periphery of the rotating shaft 24. The incomplete gear 27 does not mesh with the toothed grooves on the two long sides of the connecting frame 26 at the same time. In this embodiment, the gas distribution mechanism operates in conjunction with the rotating shaft 24, without the need for additional power sources such as air pumps. This simplifies the device structure while achieving automatic air supply. The two air cylinders alternately supply and deliver air, ensuring continuous and stable airflow output from the unblocking pipe 30 and improving the unblocking effect of the filter mesh.

[0052] The implementation principle of this embodiment is as follows: the rotation of the rotating shaft 24 drives the incomplete gear 27 to rotate synchronously. The incomplete gear 27 alternately meshes with the tooth grooves on both sides of the long side of the connecting frame 26, causing the connecting frame 26 to reciprocate linearly in the horizontal direction. The connecting frame 26 drives the piston plates in the two air cylinders 11 to reciprocate synchronously through the piston rod. When the piston plate moves to the outside of the air cylinder 11, a negative pressure is formed inside the air cylinder 11, and outside air enters the air cylinder through the one-way valve of the air inlet pipe 28. When the piston plate moves to the inside of the air cylinder 11, the air inside the air cylinder 11 is discharged through the one-way valve of the air delivery pipe 12, and then enters the unblocking channel through the connecting pipe 23 and the air guide pipe 31 in sequence. The air is finally ejected from the air outlet of the pipe 30. When the piston plate in one of the air cylinders 11 moves inward, the piston plate in the other air cylinder 11 moves outward. The two air cylinders 11 alternately supply air to the connecting pipe 23, thereby ensuring the continuous input of airflow in the unblocking pipe 30. The airflow ejected from the air outlet directly acts on the mesh of the filter screen 16, blowing out the fine impurities and spore oocysts blocked in the mesh. Combined with the scraping of the baffle 17 and the pushing of the spiral shaft 29 of the cleaning mechanism, the surface and mesh of the filter screen 16 are cleaned in all directions and in real time, effectively preventing the filter screen 16 from clogging and ensuring that the filter screen 16 always maintains high-efficiency filtration performance.

[0053] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A device for physical removal and inactivation of sporozoite oocysts in aquaculture ponds, characterized in that, include: The filtration mechanism includes a filter box (2), a filter screen (16) rotatably connected inside the filter box (2), and a rotating shaft (24) rotatably connected to the inner wall of the top of the filter box (2) and coaxially arranged therewith. The filter screen (16) is sleeved on the outside of the rotating shaft (24). The bottom of the filter box (2) is provided with a discharge port (3) and the top is provided with a water inlet (10). The top of the filter box (2) is equipped with a drive assembly for driving the rotating shaft (24) to rotate. A cleaning mechanism is installed inside the filter box (2) and is used to clean impurities on the surface of the filter screen (16) and discharge them from the discharge port (3) when the rotating shaft (24) rotates. The inactivation mechanism includes an inactivation box (1) installed at the bottom of the filter box (2) and communicating with it, and a partition ring (19) coaxially fixed inside the inactivation box (1). The partition ring (19) divides the interior of the inactivation box (1) into an inner first inactivation chamber and an outer second inactivation chamber. The bottom of the partition ring (19) is provided with an outlet (22) communicating with the second inactivation chamber. The inactivation box (1) is equipped with an inactivation component for physically inactivating the two inactivation chambers. The water dispersion mechanism includes a drain pipe (5) connected to the second inactivation chamber and a water-dispersing assembly installed at the bottom of the inactivation box (1). The water-dispersing assembly is drivenly connected to the rotating shaft (24) to disperse the water discharged from the water pipe (5).

2. The device for physical removal and inactivation of oocysts of spore-forming parasites in aquaculture ponds according to claim 1, characterized in that, The top of the inactivation box (1) is provided with an inlet that communicates with the inside of the filter box (2). The inner diameter of the partition ring (19) is larger than the inner diameter of the filter box (2), and the top of the partition ring (19) is fixedly connected to the inner wall of the top of the inactivation box (1).

3. The device for physical removal and inactivation of oocysts of spore-forming parasites in aquaculture ponds according to claim 1, characterized in that, The drive assembly includes a mounting bracket mounted on top of the filter box (2) and a drive motor (9) mounted on top of the mounting bracket. The top of the rotating shaft (24) extends above the top of the filter box (2) and is connected to the output shaft of the drive motor (9) via a coupling.

4. The device for physical removal and inactivation of oocysts of spore-forming parasites in aquaculture ponds according to claim 1, characterized in that, The filter (16) has an umbrella-shaped structure, and the bottom edge of the filter (16) is flush with the bottom of the discharge port (3).

5. The device for physical removal and inactivation of oocysts of spore-forming parasites in aquaculture ponds according to claim 4, characterized in that, The cleaning mechanism includes a baffle (17) fixed inside the discharge port (3) and arranged along the generatrix of the filter screen (16), and a spiral shaft (29) rotatably connected inside the baffle (17). The bottom long side of the baffle (17) abuts against the surface of the filter screen (16). One end of the spiral shaft (29) is fixed with a linkage gear (32). The outer circumference of the rotating shaft (24) is sleeved with a drive bevel gear (18) that meshes with the linkage gear (32). The outer circumference of the spiral shaft (29) abuts against the surface of the filter screen (16).

6. The device for physical removal and inactivation of oocysts of spore-forming parasites in aquaculture ponds according to claim 1, characterized in that, The inactivation assembly includes multiple ultraviolet lamps (15) installed on the inner wall of the top of the first inactivation chamber and multiple ultrasonic inactivation assemblies installed on the inactivation box (1). The ultrasonic inactivation assembly includes an ultrasonic generator 6 installed on the outer wall of the inactivation box (1) and a transducer (13) installed on the inner wall of the second inactivation chamber.

7. The device for physical removal and inactivation of oocysts of spore-forming parasites in aquaculture ponds according to claim 6, characterized in that, The second inactivation chamber is uniformly equipped with multiple staggered partitions (14), and two adjacent partitions (14) are fixed to the bottom and top of the second inactivation chamber respectively, and each has a gap for water to pass through.

8. The device for physical removal and inactivation of oocysts of spore-forming parasites in aquaculture ponds according to claim 1, characterized in that, The inlet end of the drain pipe (5) is located on the top of the outer side of the inactivation box (1). The water-draining assembly includes a ring pipe (20) fixed to the inner wall of the bottom of the inactivation box (1) and an installation shaft (8) rotatably connected to the inner wall of the bottom of the inactivation box (1) and coaxially arranged with the rotating shaft (24). The bottom of the rotating shaft (24) is connected to the installation shaft (8) through a speed increaser. The outlet end of the drain pipe (5) is connected to the inside of the ring pipe (20). Multiple drain ports (21) are opened on the bottom surface of the ring pipe (20). Multiple drain plates (7) located directly below the drain ports (21) are fixed on the outer periphery of the installation shaft (8).

9. The device for physical removal and inactivation of oocysts of spore-forming parasites in aquaculture ponds according to claim 5, characterized in that, The baffle (17) has an L-shaped structure. The bottom surface of its long end abuts against the top surface of the filter screen (16), and its short end is located directly above the spiral shaft (29). The filter box (2) is equipped with a drain pipe (30) located on the bottom surface of the filter screen (16). The drain pipe (30) is arranged along the length direction of the spiral shaft (29) and is located directly below it. The drain pipe (30) has multiple air outlets on the side facing the bottom surface of the filter screen (16). The top of the filter box (2) is equipped with an air distribution mechanism for supplying air to the drain pipe (30).

10. The device for physical removal and inactivation of oocysts of spore-forming parasites in aquaculture ponds according to claim 9, characterized in that, The gas distribution mechanism includes two opposing gas cylinders (11) installed on the top of the filter box (2), a connecting frame (26) movably sleeved outside the rotating shaft (24), and a connecting pipe (23) located on the inner wall of the top of the first inactivation chamber. The connecting pipe (23) is connected to the inside of the unblocking pipe (30) through the gas guide pipe (31). A piston plate is installed inside each of the two gas cylinders (11), and a piston rod (25) is installed on each of the two piston plates along the axial direction of the gas cylinders (11). 5) One end is fixed to the two short sides of the connecting frame (26). The two air cylinders (11) are each equipped with an air inlet pipe (28) with a one-way valve and an air delivery pipe (12) at the ends that are far apart from each other. The other ends of the two air delivery pipes (12) are connected to the connecting pipe (23). Multiple toothed grooves are opened on the inner walls of the two long sides of the connecting frame (26). The outer circumference of the rotating shaft (22) is fitted with an incomplete gear (27) that alternately meshes with the toothed grooves on the inner side of the two long sides of the connecting frame (26).

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