Circulating system matched with container breeding

Through the coordinated design of denitrification and nitrification in the container aquaculture circulation system, the problem of decreasing water quality pH value is solved, the stable circulation of water quality and the cleaning of the box are achieved, and the living environment of fish is ensured.

CN120323398AInactive Publication Date: 2025-07-18ANHUI ORGANIC LIANGZHUANG TRADING CO LTD
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Patent Information

Application Number
CN202510746855.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-06-05
Publication Date
2025-07-18
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

In fish farming systems, there is a conflict between nitration and denitrification, which leads to a decrease in the pH of water quality and affects the survival of fish. It is difficult for the existing technology to effectively solve it.

Method used

A container aquaculture circulation system is designed, including a denitrification box, a return pump, a main water pipe, an attachment plate and a nitration tank. It decomposes nitrates through anaerobic denitrification bacteria, combines aerobic nitrification bacteria to convert ammonia into nitrite and nitrate, and uses a return pump and circulation pump to achieve stable water quality circulation, and keeps the box clean through a cleaning motor and a contamination conveyor.

Benefits of technology

The stable circulation of water quality is achieved, the pH value decrease caused by excessive nitrate is avoided, the living environment of fish is ensured, and the cleaning and rapid nitration and coverage of the box are maintained.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses a matched circulating system for container cultivation, which comprises a box body, one end of the box body is provided with a sewage collection box, a sewage disposal pipe is arranged above the sewage collection box and used for discharging sediments at the bottom in the box body, and the other end of the box body is provided with a denitrification box used for decomposing nitrate in water in the box body. Purified water in the inner box in the denitrification box is pumped through a reflux pump and flows back into the box body, one end, close to the denitrification box, of the box body is connected with the top of the denitrification box through a main water pipe and a branch water pipe, and water in the box body flows into the space between the inner box and the denitrification box in the denitrification box. The water flows into the inner box through the bottom, so that the action time of denitrification is prolonged, nitrate in the water can be fully decomposed, a plurality of rotating shafts are symmetrically and rotationally arranged on the two sides in the box body, and a plurality of attachment plates are arranged on the side surface in an annular array; and a dirt collecting conveyor is arranged at the bottom of the box body, and a plurality of push plates are arranged above the dirt collecting conveyor at equal intervals.
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Description

Technical Field

[0001] The present invention relates to the technical field of container fish farming, and particularly relates to a circulation system for supporting container farming. Background Art

[0002] In a fish farming system, there are many reaction systems. Among them, the nitrification system is an important link. The core of the nitrification system is nitrifying bacteria, which can convert ammonia into nitrite and then oxidize nitrite into nitrate. The required bacteria are nitrite bacteria and nitrate bacteria respectively, both of which are aerobic bacteria. However, when there is too much nitrate and the pH of the water quality drops, it is also easy to cause harm to fish and affect their survival. At this time, a denitrification system is needed to decompose nitrate to achieve the effect of adjusting the pH in the water. The required bacteria are anaerobic bacteria. This makes there a conflict between denitrification and nitrification in the fish tank, resulting in the inability to fully and effectively solve the water quality safety in the fish tank. Summary of the Invention

[0003] The purpose of the present invention is to provide a circulation system for supporting container farming to solve the technical problems in the above background.

[0004] The purpose of the present invention can be achieved through the following technical solutions:

[0005] A circulation system for supporting container farming includes a box body. One end of the box body is provided with a sewage collection box and a sewage cleaning pipe is arranged above it. The other end of the box body is provided with a denitrification box. A reflux box eaves pipe is arranged above the box body. One side of the reflux box eaves pipe is connected to the middle of the top of the denitrification box through a return water pipe, and a reflux pump is arranged on the return water pipe. One end of the box body close to the denitrification box is provided with a main water pipe, and a circulation pump is arranged on the main water pipe. The end of the main water pipe is provided with branch water pipes, and the ends are respectively connected to the top of the denitrification box. A plurality of rotating shafts are symmetrically and rotatably arranged on both sides inside the box body, and a plurality of attachment plates are arranged in a circular array on the side surface. A sewage collection conveyor is arranged at the bottom of the box body, and a plurality of push plates are arranged at equal intervals above it.

[0006] As a further solution of the present invention: an inner box is arranged inside the denitrification box. A top partition board, a middle partition board and a bottom board are sequentially arranged on the outer side of the inner box from top to bottom. A plurality of side partition boards are arranged between the top partition board and the middle partition board on the outer side of the inner box and are connected to the inner side of the denitrification box. A plurality of heat preservation pipes are arranged between two side partition boards on the same side. A plurality of water passing holes are respectively arranged on the top partition board on the outer side of the inner box. A water passing port is opened on the middle partition board below each row of heat preservation pipes. A plurality of baffle plates are arranged between the middle partition board and the bottom board on the outer side of the inner box. A plurality of bacteria-carrying plates are arranged at equal intervals between adjacent baffle plates. A plurality of water flowing holes are opened on the side surface of the inner box between the middle partition board and the bottom board.

[0007] As a further solution of the present invention: a plurality of through holes are arranged in a rectangular array on the bacteria-carrying plate. Bacteria grooves are arranged on both sides of the bacteria-carrying plate below each through hole.

[0008] As a further solution of the present invention: a filter box is arranged at the connection of the main water pipe on the inner side of the box body. A plurality of water inlets are arranged on the side surface of the filter box. Filter plates are respectively arranged inside the filter box between the water inlets.

[0009] As a further solution of the present invention: fixing buckles are symmetrically arranged at the connection of the main water pipe on the inner side of the box body. The filter box is slidably connected to the fixing buckle through a clamping seat arranged on one side.

[0010] As a further solution of the present invention: a sewage cleaning motor is arranged at the top of the sewage cleaning pipe. A sewage cleaning shaft is rotatably arranged inside the sewage cleaning pipe and is fixedly connected to one end of the sewage cleaning motor. A sewage cleaning spiral blade is arranged on the outer side of the sewage cleaning shaft. A sewage discharge port is arranged on one side above the sewage cleaning pipe.

[0011] As a further solution of the present invention: nitrification tanks are symmetrically opened on both sides inside the box body. The rotating shaft is rotatably arranged in the nitrification tank. A belt pulley is arranged at one end of the rotating shaft. A plurality of belt pulleys on the same side inside the box body are connected by a belt. A driven bevel gear is arranged at the end of one rotating shaft at one end inside the nitrification tank. A rotating motor is arranged on the outer side of the box body and a driving bevel gear is arranged on the output end. The driving bevel gear is meshed with the driven bevel gear.

[0012] As a further solution of the present invention: the return box eave pipe is rectangular and a plurality of water falling holes are opened inside.

[0013] The beneficial effects of the present invention:

[0014] (1) In the present invention, the bacterial tank is used for the growth of anaerobic bacteria for denitrification to ensure the decomposition of nitrates. After the decomposition of nitrates, the water flows into the interior of the inner tank through the water flow holes opened on the side of the inner tank and located between the middle partition and the bottom plate. The water after decomposition surges upward from the bottom of the inner tank and then returns to the interior of the tank under the action of the reflux pump, ensuring the full decomposition of nitrates in the water. At the same time, the purified water after decomposition flows into the interior of the inner tank through the water flow holes below and then returns to the interior of the tank under the action of the reflux pump, solving the problem that the water quality is affected by the excessive nitrates after the nitrifying bacteria convert nitrites into nitrates, resulting in a decrease in pH value and affecting the survival of fish. Since nitrifying bacteria are aerobic bacteria and denitrifying bacteria are anaerobic bacteria, the denitrification tank is arranged outside the tank, solving the situation where nitrification and denitrification are contradictory to each other, enabling the water in the tank to be stably circulated and ensuring the water quality safety during the breeding process;

[0015] (2) In the present invention, when the undegradable pollutants and impurities deposited at the bottom of the tank are pushed into the sewage collection box under the action of the sewage collection conveyor, and then the sewage cleaning motor drives the sewage cleaning spiral blade to rotate. At this time, the pollutants and impurities in the sewage collection box can be conveyed upward and then discharged through the sewage discharge port. In the design, the sewage discharge port should be higher than the water surface height in the tank to avoid the situation that the water in the tank flows out through the sewage discharge port due to the formation of a communicating vessel between the tank and the sewage cleaning pipe, effectively ensuring the cleanliness of the bottom of the tank;

[0016] (3) In the present invention, the rotary motor drives the driving bevel gear to rotate, and then drives the driven bevel gear engaged with it to rotate. At this time, all the rotating shafts can be driven to rotate, and then by driving the attachment plate to rotate, the nitrifying bacteria attached to the attachment plate are fully diffused into the water, and then the impurities and fish excrement in the tank are decomposed. The attachment plate can be used for the reproduction of nitrifying bacteria and can quickly disperse the nitrifying bacteria into the water, ensuring the rapidity of nitrification and the comprehensiveness of the coverage area. Description of the Drawings

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 is a partial sectional view of the overall structure of the present invention;

[0019] Figure 2 is a schematic diagram of the connection structure between the top partition and the inner tank in the present invention;

[0020] Figure 3 is Figure 2 the enlarged structure schematic diagram of area A in

[0021] Figure 4 is a sectional structure schematic diagram of the sewage cleaning pipe in the present invention;

[0022] Figure 5 It is a partial structural schematic diagram of the eaves pipe of the reflux box in the present invention;

[0023] Figure 6 It is a schematic cross-sectional view of the connection structure between the filter box and the box body in the present invention;

[0024] Figure 7 It is a partial cross-sectional schematic diagram of the connection structure between the rotating shaft and the box body in the present invention;

[0025] Figure 8 It is a schematic diagram of the connection structure between the driving bevel gear and the driven bevel gear in the present invention.

[0026] In the figure: 1. Box body; 10. Eaves pipe of the reflux box; 101. Water dropping hole; 11. Sewage collection box; 12. Filter box; 120. Water inlet; 121. Filter plate; 122. Clamping seat; 123. Fixed buckle; 13. Nitrification tank; 131. Rotating shaft; 132. Attachment plate; 133. Pulley; 14. Rotating motor; 141. Driving bevel gear; 142. Driven bevel gear; 15. Sewage collection conveyor; 151. Pushing plate; 2. Denitrification box; 20. Circulation pump; 21. Main water pipe; 22. Branch water pipe; 23. Return water pipe; 231. Return pump; 24. Top partition board; 240. Water passing hole; 241. Side partition board; 25. Middle partition board; 250. Water passing port; 26. Bottom plate; 261. Baffle plate; 262. Bacteria-carrying plate; 2620. Through hole; 2621. Bacteria tank; 27. Inner box; 270. Water flowing hole; 28. Heat preservation pipe; 3. Cleaning pipe; 30. Sewage discharge port; 31. Cleaning motor; 32. Cleaning shaft; 33. Cleaning spiral blade. Detailed implementation manners

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0028] Please refer to Figure 1 - Figure 8As shown, the present invention is a circulation system for container aquaculture, comprising a box body 1. A sewage collection box 11 is provided at one end of the box body 1, and a sewage cleaning pipe 3 is provided above it for discharging sediments at the bottom of the box body 1. A denitrification box 2 is provided at the other end of the box body 1 for decomposing nitrates in the water in the box body 1, then returning the purified water to the box body 1, and discharging the generated nitrogen into the air. In addition, a reflux box eave pipe 10 is provided above the box body 1. One side of the reflux box eave pipe 10 is connected to the middle of the top of the denitrification box 2 through a return water pipe 23, and a reflux pump 231 is provided on the return water pipe 23. The purified water inside the inner box 27 of the denitrification box 2 is pumped through the reflux pump 231 to return it to the box body 1. At the same time, a main water pipe 21 is provided at one end of the box body 1 close to the denitrification box 2, and a circulation pump 20 is provided on the main water pipe 21. The end of the main water pipe 21 is provided with a branch water pipe 22, and the ends are respectively connected to the top of the denitrification box 2. The branch water pipe 22 is a pipe with one inlet and four outlets. The inlet is connected to the main water pipe 21, and the four outlets are respectively connected to the top of the denitrification box 2, and the interfaces are respectively located outside the inner box 27. The water in the box body 1 flows into the space between the inner box 27 of the denitrification box 2 and the denitrification box 2, and then flows into the middle of the inner box 27 through the bottom, increasing the action time of denitrification, so that the nitrates in the water can be fully decomposed. A number of rotating shafts 131 are symmetrically and rotatably provided on both sides inside the box body 1, and a number of attachment plates 132 are arranged in a circular array on the side for attaching nitrite bacteria and nitrate bacteria required for nitrification reaction to convert ammonia in the water into nitrite and then into nitrate. While solving the pollutants in the water, the generated toxic nitrite is decomposed. A sewage collection conveyor 15 is provided at the bottom of the box body 1, and a number of push plates 151 are equidistantly provided above it for pushing the pollutants that cannot be decomposed deposited at the bottom of the box body 1 or the pollutants after decomposition into the sewage collection box 11, and then they can be discharged through the sewage cleaning pipe 3 and the sewage outlet 30.

[0029] Specifically, referring to Figure 2 and Figure 3As shown in the figure, an inner box 27 is provided inside the denitrification box 2. Among them, a top partition plate 24, a middle partition plate 25, and a bottom plate 26 are sequentially arranged on the outside of the inner box 27 from top to bottom. A number of side partition plates 241 are arranged between the top partition plate 24 and the middle partition plate 25 on the outside of the inner box 27 and are connected to the inner side of the denitrification box 2. That is, two side partition plates 241 are symmetrically arranged on each side and form chambers with the denitrification box 2 respectively. A number of heat preservation pipes 28 are arranged between the two side partition plates 241 on the same side. The heat preservation pipes 28 can be used for heating. A number of water passing holes 240 are respectively arranged on the top partition plate 24 on the outside of the inner box 27. A water passing port 250 is opened on the middle partition plate 25 below each row of heat preservation pipes 28. A number of baffle plates 261 are arranged between the middle partition plate 25 and the bottom plate 26 on the outside of the inner box 27, and the inner box 27 and the denitrification box 2 are further divided into a number of chambers corresponding to the upper water passing ports 250 respectively. A number of bacteria-carrying plates 262 are arranged at equal intervals between every two adjacent baffle plates 261. A number of through holes 2620 are arranged in a rectangular array on the bacteria-carrying plates 262. Bacteria grooves 2621 are arranged on both sides of the bacteria-carrying plates 262 below each through hole 2620. The bacteria grooves 2621 are used for the growth of anaerobic bacteria for denitrification to ensure the decomposition of nitrates. After the nitrates are decomposed, the water flows into the interior of the inner box 27 through the water flowing holes 270 opened between the middle partition plate 25 and the bottom plate 26 on the side of the inner box 27. After decomposition, the water surges upward from the bottom of the inner box 27 and then returns to the box body 1 under the action of the reflux pump 231, ensuring the full decomposition of nitrates in the water. At the same time, after decomposition, the purified water flows into the interior of the inner box 27 through the lower water flowing holes 270 and then returns to the box body 1 under the action of the reflux pump 231, solving the problem that the water quality is affected by the excessive nitrates after the nitrifying bacteria convert nitrites into nitrates, resulting in a decrease in pH value and affecting the survival of fish.

[0030] In addition, since nitrifying bacteria are aerobic bacteria and denitrifying bacteria are anaerobic bacteria, setting the denitrification box 2 outside the box body 1 solves the situation where nitrification and denitrification are contradictory to each other, enables the water in the box body 1 to circulate stably, and ensures the water quality safety during the breeding process.

[0031] Secondly, as shown in Figure 1 and Figure 6 A filter box 12 is provided at the connection of the main water pipe 21 on the inner side of the box body 1. A number of water inlets 120 are arranged on the side of the filter box 12. Filter plates 121 are respectively arranged between the water inlets 120 inside the filter box 12. When the circulating pump 20 purifies the water in the box body 1, the water enters the denitrification box 2 from the main water pipe 21. In order to ensure that fish and other organisms in the water enter, setting the filter box 12 can effectively separate the fish and other organisms in the box body 1 and avoid affecting the circulation of the denitrification system.

[0032] In addition, fixing buckles 123 are symmetrically arranged inside the box body 1 and at the connection of the main water pipe 21. The filter box 12 is slidably connected to the fixing buckles 123 through the clamping seats 122 arranged on one side, which facilitates the installation and replacement of the filter box 12.

[0033] Refer to Figure 4 As shown, a sewage cleaning motor 31 is arranged at the top of the sewage cleaning pipe 3. A sewage cleaning shaft 32 is rotatably arranged inside the sewage cleaning pipe 3 and one end is fixedly connected to one end of the sewage cleaning motor 31. A sewage cleaning spiral blade 33 is arranged on the outer side of the sewage cleaning shaft 32. A sewage discharge port 30 is arranged on one side above the sewage cleaning pipe 3. When the undissolvable pollutants and impurities deposited at the bottom of the box body 1 are pushed into the sewage collection box 11 under the action of the sewage collection conveyor 15, and then the sewage cleaning motor 31 drives the sewage cleaning spiral blade 33 to rotate. At this time, the pollutants and impurities in the sewage collection box 11 can be conveyed upwards and then discharged through the sewage discharge port 30. In the design, the sewage discharge port 30 should be higher than the water surface height in the box body 1 to avoid the situation that the water in the box body 1 flows out through the sewage discharge port 30 due to the formation of a communicating vessel between the box body 1 and the sewage cleaning pipe 3, effectively ensuring the cleanliness of the bottom of the box body 1.

[0034] Refer to Figure 7 and Figure 8 As shown, nitrification tanks 13 are symmetrically arranged on both sides inside the box body 1. A rotating shaft 131 is rotatably arranged in the nitrification tank 13. One end of the rotating shaft 131 is provided with a pulley 133. The pulleys 133 on the same side inside the box body 1 are connected by a belt. One end of a rotating shaft 131 at one end inside the nitrification tank 13 is provided with a driven bevel gear 142. A rotating motor 14 is arranged outside the box body 1 and a driving bevel gear 141 is arranged at the output end. The driving bevel gear 141 is meshed with the driven bevel gear 142. By driving the driving bevel gear 141 to rotate through the rotating motor 14, the driven bevel gear 142 meshed with it is driven to rotate. At this time, all the rotating shafts 131 can be driven to rotate, and then the attachment plate 132 is driven to rotate, so that the nitrifying bacteria attached to the attachment plate 132 are fully diffused into the water, and then the impurities and fish excrement in the box body 1 are decomposed. The attachment plate 132 can not only be used for the reproduction of nitrifying bacteria but also quickly disperse the nitrifying bacteria into the water, ensuring the rapidity of nitrification and the comprehensiveness of the coverage area.

[0035] Refer to Figure 5 As shown, the reflux box eaves pipe 10 is rectangular and a number of water dropping holes 101 are arranged inside. The purified water after denitrification treatment flows into the reflux box eaves pipe 10 along the reflux water pipe 23 under the action of the reflux pump 231. When the water surface exceeds the water dropping holes 101, it can flow into the box body 1 through the water dropping holes 101. During the falling process, the oxygen in the dissolved air can be dissolved, and at the same time, the nitrogen generated by the denitrification reaction is discharged.

[0036] In addition, a pure oxygen supply system for oxygen supply is also provided inside the box body 1. This system is a prior art and will not be elaborated here. At the same time, the feeding system for bait, the detection of nitrate content and the pH value of water will not be elaborated here either.

[0037] Working principle of the present invention:

[0038] During operation, the pollutants generated by the excrement of the fish and the pollution of the bait inside the box body 1 sink to the bottom of the box body 1. The rotating motor 14 drives the driving bevel gear 141 to rotate, and then drives the driven bevel gear 142 meshed with it to rotate. At this time, all the rotating shafts 131 rotate, and then drive the attaching plate 132 to rotate, so that the nitrifying bacteria attached to the attaching plate 132 are fully diffused into the water, and then decompose the impurities and the excrement of the fish inside the box body 1. When the pH value of the water in the box body 1 decreases due to the nitrate generated by the decomposition of the pollutants deposited at the bottom of the box body 1, the circulation pump 20 pumps the water inside the box body 1 and conveys it to the denitrification tank 2 to make it between the inner tank 27 and the denitrification tank 2. Then, the denitrifying bacteria in the bacteria tank 2621 on the carrier plate 262 at the bottom decompose the nitrate in the water. The circulation pump 20 slowly circulates the water, and at the same time, the water on both sides inside and outside the inner tank 27 remains at the same height. The water on the inner side flows back into the box body 1 under the action of the reflux pump 231. When the nitrate content in the water inside the box body 1 reaches the safe value range, the circulation pump 20 is in standby or slows down its operation to ensure the cleanliness of the water quality;

[0039] When there is a large amount of pollutants deposited inside the box body 1, the sewage collecting conveyor 15 is started, and the pollutants on the surface are slowly pushed into the sewage collecting box 11. Then, the cleaning motor 31 drives the cleaning spiral blade 33 to rotate. At this time, the pollutants and impurities in the sewage collecting box 11 can be conveyed upward and then discharged through the sewage outlet 30.

[0040] The above has described a specific embodiment of the present invention in detail, but the content described is only the preferred embodiment of the present invention and cannot be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the application of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. A circulating system for supporting container aquaculture, comprising a box body (1), characterized in that, One end of the box body (1) is provided with a sewage collection box (11) and a sewage cleaning pipe (3) is arranged above it. The other end of the box body (1) is provided with a denitrification tank (2). A reflux box eaves pipe (10) is arranged above the box body (1). One side of the reflux box eaves pipe (10) is connected to the middle of the top of the denitrification tank (2) through a reflux water pipe (23), and a reflux pump (231) is arranged on the reflux water pipe (23). One end of the box body (1) close to the denitrification tank (2) is provided with a main water pipe (21), and a circulation pump (20) is arranged on the main water pipe (21). The end of the main water pipe (21) is provided with a branch water pipe (22), and the ends are respectively connected to the top of the denitrification tank (2). A number of rotating shafts (131) are symmetrically and rotatably arranged on both sides inside the box body (1), and a number of attachment plates (132) are arranged in a circular array on the side surface. A sewage collection conveyor (15) is arranged at the bottom of the box body (1), and a number of push plates (151) are arranged at equal intervals above it.

2. The circulating system for supporting container aquaculture according to claim 1, wherein An inner box (27) is arranged inside the denitrification tank (2). A top partition plate (24), a middle partition plate (25) and a bottom plate (26) are sequentially arranged outside the inner box (27) from top to bottom. A number of side partition plates (241) are arranged outside the inner box (27) and between the top partition plate (24) and the middle partition plate (25) and are connected to the inner side of the denitrification tank (2). A number of heat preservation pipes (28) are arranged between two side partition plates (241) on the same side. A number of water passing holes (240) are respectively arranged on the top partition plate (24) and outside the inner box (27). A water passing port (250) is opened on the middle partition plate (25) and below each row of heat preservation pipes (28). A number of baffle plates (261) are arranged outside the inner box (27) and between the middle partition plate (25) and the bottom plate (26). A number of bacteria-carrying plates (262) are arranged at equal intervals between adjacent baffle plates (261). A number of water flowing holes (270) are opened on the side surface of the inner box (27) and between the middle partition plate (25) and the bottom plate (26).

3. A circulation system for supporting container aquaculture according to claim 2, characterized in that, A number of through holes (2620) are arranged in a rectangular array on the bacteria-carrying plate (262). Bacteria grooves (2621) are arranged on both sides of the bacteria-carrying plate (262) and below each through hole (2620).

4. A circulation system for supporting container aquaculture according to claim 1, characterized in that, A filter box (12) is arranged inside the box body (1) at the connection of the main water pipe (21). A number of water inlets (120) are arranged on the side surface of the filter box (12). Filter plates (121) are respectively arranged inside the filter box (12) and between the water inlets (120).

5. A circulation system for supporting container aquaculture according to claim 4, characterized in that, Fixing buckles (123) are symmetrically arranged inside the box body (1) at the connection of the main water pipe (21). The filter box (12) is slidably connected to the fixing buckles (123) through a clamping seat (122) arranged on one side.

6. The circulating system for supporting container aquaculture according to claim 1, characterized in that, A sewage cleaning motor (31) is provided at the top of the sewage cleaning pipe (3). A sewage cleaning shaft (32) is rotatably arranged inside the sewage cleaning pipe (3) and is fixedly connected to one end of the sewage cleaning motor (31). A sewage cleaning spiral blade (33) is arranged on the outer side of the sewage cleaning shaft (32). A sewage discharge port (30) is arranged on one side above the sewage cleaning pipe (3).

7. A circulation system for supporting container aquaculture according to claim 1, characterized in that, Nitrification tanks (13) are symmetrically arranged on both sides inside the box body (1). A rotating shaft (131) is rotatably arranged inside the nitrification tank (13). A pulley (133) is arranged at one end of the rotating shaft (131). A plurality of the pulleys (133) on the same side inside the box body (1) are connected by a belt. A driven bevel gear (142) is arranged at the end of one of the rotating shafts (131) at one end inside the nitrification tank (13). A rotating motor (14) is arranged outside the box body (1) and a driving bevel gear (141) is arranged at the output end. The driving bevel gear (141) is meshed with the driven bevel gear (142).

8. A circulation system for supporting container aquaculture according to claim 1, characterized in that, The return box eave pipe (10) is rectangular and a plurality of water falling holes (101) are arranged inside it.