Three-dimensional high-density recirculating aquaculture device

Abstract

The utility model relates to the technical field of aquaculture devices, in particular to a three-dimensional high-density circulating aquaculture device which comprises an aquaculture pond, a first frame-shaped supporting plate is arranged in the aquaculture pond, a grid plate is placed on the top of the first frame-shaped supporting plate, a sewage draining outlet is formed in the bottom of the left side of the inner wall of the aquaculture pond, and a bottom plate is arranged at the bottom of the rear side of the aquaculture pond. A water purification assembly, a first pump body, a U-shaped supporting plate and a second pump body are arranged at the top of the bottom plate, a third water purification tank is placed at the top of the U-shaped supporting plate, and a second water purification tank is placed at the top of the third water purification tank. According to the three-dimensional high-density recirculating aquaculture device, the grid plate can prevent fishes from submerging to the bottom of the interior of the aquaculture pond and prevent the fishes from being sucked by the dirt suction disc, and excrement of the fishes can penetrate through the grid plate and sink to the bottom of the interior of the aquaculture pond; excrement sinking to the inner bottom of the culture pond can enter the dirt suction disc along with water flow, so that fish excrement in the culture pond is pumped out.

Description

Technical Field

[0001] The utility model relates to the technical field of aquaculture devices, in particular to a three-dimensional high-density circulating aquaculture device. Background Art

[0002] Aquaculture is a production activity of breeding, cultivating and harvesting aquatic plants and animals under human control. It generally includes the whole process of growing aquatic products from seedlings under artificial feeding and management. Aquaculture includes extensive breeding, intensive breeding and high-density intensive breeding. High-density intensive breeding adopts methods such as flowing water, temperature control, oxygenation and feeding high-quality bait to carry out high-density breeding in small water bodies to obtain high yields. In the process of high-density intensive breeding of fish fry, if the water with dirt in the breeding pond cannot be discharged and discharged into new clean water, the water quality in the breeding pond will gradually deteriorate, causing a vicious cycle. Therefore, it is necessary to use a circulating water breeding device to purify the breeding water.

[0003] The patent with publication number CN212589691U discloses an ultra-high density fully enclosed circulating water aquaculture device, including a breeding pool, an observation travel frame is fixedly installed on the upper surface of the breeding pool, a support frame is fixedly installed on the upper surface of the observation travel frame, a circulating water purifier, a power supply box and a connecting pipe are fixedly installed on the upper surface of the support frame, a first water pipe is fixedly connected to the lower end of the connecting pipe, a second water pipe is fixedly connected to the lower end of the circulating water purifier, a suction tray is fixedly installed on the lower end of the first water pipe, a water purification tray is fixedly connected to the lower end of the second water pipe, a floating sleeve is fixedly installed on the outer surface of the suction tray, and a water suction tray is provided on the lower surface of the suction tray. The breeding device of the utility model can absorb the sewage in the pool, and discharge the water into the pool after purification, so as to achieve a good water circulation and avoid the waste of water resources, and at the same time ensure that a good and healthy water quality environment is maintained in the breeding pool.

[0004] In the specific use of the above-mentioned prior art, the suspended foreign matter on the water surface is absorbed by the suction plate, and the clean water is discharged to the bottom of the breeding pond through the clean water plate, which promotes the fluidity of the water in the pond while absorbing the suspended foreign matter. However, in actual application, high-density fish farming will produce a large amount of excrement, which will fall downward due to its own weight. The water flow of the above-mentioned prior art is from bottom to top, and the water capacity of the breeding pond is large. The fish excrement cannot flow upward to the suction plate with the water flow. This not only causes the fish excrement to remain in the breeding pond, but also makes the fish excrement unable to sink completely, resulting in turbidity of the water in the breeding pond. In addition, the suction plate suspended on the water surface may absorb the fish, which may easily cause the fish to be injured. In view of this, we propose a three-dimensional high-density circulating water breeding device. Utility Model Content

[0005] The purpose of the utility model is to provide a three-dimensional high-density circulating water culture device to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A three-dimensional high-density circulating water aquaculture device, comprising a breeding pond, wherein a first frame-shaped support plate is provided in the breeding pond and near the bottom, a mesh plate is placed on the top of the first frame-shaped support plate, a sewage outlet is provided at the bottom of the left side of the inner wall of the breeding pond, a sewage suction plate is provided at the left side of the breeding pond and at the sewage outlet, the first frame-shaped support plate supports the mesh plate, the mesh plate can prevent fish from diving to the bottom of the breeding pond, the fish excrement can pass through the mesh plate and sink to the bottom of the breeding pond, and when the water flow in the breeding pond flows toward the sewage outlet, the excrement sinking to the bottom of the breeding pond will enter the sewage suction plate along with the water flow;

[0008] A bottom plate is provided at the bottom of the rear side of the breeding pond, a water purification assembly and a first pump body are provided at the top of the bottom plate and near the left side, the water purification assembly includes a first clean water tank, a first water inlet connecting pipe is provided at the left side of the first clean water tank and near the top of the front side, the first water inlet connecting pipe is connected with the dirt suction pan through a water suction pipe, a filter barrel is placed in the first clean water tank for filtering the water entering the first clean water tank, the main purpose is to remove particulate matter in the water, the top of the first clean water tank is detachably connected with a first tank cover through two buckles, the two buckles are respectively located at the tops of the left and right sides of the first clean water tank, which is convenient for the disassembly and assembly of the first tank cover, a first water outlet connecting pipe is provided at the bottom of the first clean water tank, the input end of the first pump body is connected with the first water outlet connecting pipe through the first pumping pipe, the first pump body is connected to the power supply and the controller for operation, the first tank cover closes the first clean water tank, the first pump body pumps out the filtered water in the first clean water tank, and the first clean water tank has a negative pressure, so that the water and excrement in the dirt suction pan enter the first clean water tank from the water suction pipe;

[0009] A U-shaped support plate and a second pump body are provided on the top of the bottom plate and near the right side, a third clean water tank is placed on the top of the U-shaped support plate, a second clean water tank is placed on the top of the third clean water tank, a second water inlet connecting pipe is provided on the left side and near the top of the second clean water tank, the output end of the first pump body is connected with the second water inlet connecting pipe through the first liquid delivery pipe, a plurality of water outlet holes b are provided at the bottom of the second clean water tank, the first pump body transports the filtered water to the second clean water tank, the second clean water tank performs a second purification on the water, and the harmful substances in the water are converted into harmless substances by beneficial microorganisms, the water after the second purification is output from the plurality of water outlet holes b to the third clean water tank, the third clean water tank performs a third purification on the water, and uses adsorption materials to adsorb harmful chemicals in the water, thereby purifying the water quality;

[0010] A second water outlet connecting pipe is provided at the bottom of the right side of the third clean water tank, the input end of the second pump body is communicated with the second water outlet connecting pipe through the second liquid pumping pipe, a rectangular water pipe is provided at the top of the right side of the breeding pond, the output end of the second pump body is communicated with the rectangular water pipe through the second liquid delivery pipe, a plurality of water outlet pipes arranged equidistantly front and back are provided on the left side of the rectangular water pipe, the output end of the water outlet pipe is tilted downward, the second pump body is connected to a power supply and a controller to work, the second pump body pumps out the water after three purifications in the third clean water tank and transports it to the rectangular water pipe, and finally discharges it into the breeding pond from the plurality of water outlet pipes, thereby realizing the circulation of breeding water.

[0011] Preferably, support vertical plates are provided on both left and right sides of the bottom of the first clean water tank, and the bottom of the support vertical plates is fixedly connected to the top of the bottom plate to lift the first clean water tank.

[0012] Preferably, a rubber sealing plate is provided at the bottom of the first tank cover, and the outer wall of the rubber sealing plate is tightly fitted with the top of the inner wall of the first clean water tank to ensure the sealing of the connection between the first tank cover and the first clean water tank.

[0013] Preferably, a second sponge is placed at the bottom of the filter barrel, a first sponge is provided directly above the second sponge, a ceramic ring is filled between the first sponge and the second sponge, and the top of the filter barrel is located below the first water inlet connecting pipe. The first sponge, the ceramic ring and the second sponge filter the water entering the filter barrel in turn to effectively remove particulate matter in the water.

[0014] Preferably, a second frame-shaped support plate for supporting the filter barrel is provided at the bottom of the inner wall of the first clean water tank, and a plurality of water outlet holes a are provided at the bottom of the filter barrel. The second frame-shaped support plate can prevent the bottom of the filter barrel from fitting against the bottom of the inner wall of the first clean water tank, so that the filtered water in the filter barrel can be discharged from the plurality of water outlet holes a. Handles are provided on both sides of the top of the filter barrel to facilitate the staff to take the filter barrel out of the first clean water tank.

[0015] Preferably, a second tank cover is provided on the top of the second water clean tank to prevent dust and other impurities from entering the second water clean tank. A frame-shaped plug plate is provided at the bottom of the second water clean tank. The outer wall of the frame-shaped plug plate fits with the top of the inner wall of the third water clean tank to facilitate the installation of the second water clean tank and the third water clean tank. Biochemical cotton is placed in the second water clean tank. The biochemical cotton can cultivate nitrifying bacteria and convert harmful substances in the water into harmless substances through beneficial microorganisms, thereby achieving filtration.

[0016] Preferably, the third water purification tank is filled with activated carbon particles, which can absorb harmful chemicals in water to achieve the effect of purifying water.

[0017] Preferably, rectangular positioning blocks are provided at the bottom and near the left and right sides of the third clean water tank, and rectangular sockets are opened at the top and near the left and right sides of the U-shaped support plate, and the two rectangular positioning blocks are respectively inserted into the two rectangular sockets to improve the stability of the third clean water tank when it is placed.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. In the three-dimensional high-density circulating water breeding device, the first frame-shaped support plate supports the mesh plate, and the mesh plate can prevent the fish from diving to the bottom of the breeding pond to prevent the fish from being sucked into the sewage suction plate. The fish excrement can pass through the mesh plate and sink to the bottom of the breeding pond. When the water in the breeding pond flows toward the sewage outlet, the excrement that sinks to the bottom of the breeding pond will enter the sewage suction plate with the water flow, so that the fish excrement in the breeding pond can be extracted.

[0020] 2. In this three-dimensional high-density circulating aquaculture device, the first pump body pumps out the filtered water in the first clean water tank, and the negative pressure in the first clean water tank causes the water and excrement in the suction tray to enter the first clean water tank through the suction pipe. The filter barrel in the first clean water tank is used to filter the water entering the first clean water tank, and the main goal is to remove particulate matter in the water.

[0021] 3. In the three-dimensional high-density circulating aquaculture device, the first pump body transports the filtered water to the second clean water tank, and the second clean water tank purifies the water for the second time, and converts harmful substances in the water into harmless substances through beneficial microorganisms. The water after the second purification is output from multiple water outlets b to the third clean water tank, and the third clean water tank purifies the water for the third time, and uses adsorption materials to adsorb harmful chemicals in the water, thereby purifying the water quality.

[0022] 4. In the three-dimensional high-density circulating water aquaculture device, the second pump body extracts the water that has been purified three times in the third clean water tank and transports it to the rectangular water pipe, and finally discharges it from multiple outlet pipes into the aquaculture pond, thereby realizing the circulation of aquaculture water. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall first-view structure of the utility model;

[0024] Figure 2 It is a schematic diagram of the overall structure of the utility model from a second viewing angle;

[0025] Figure 3 It is a schematic diagram of the cross-sectional structure of the breeding pond in the utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the water purification component in the utility model;

[0027] Figure 5 It is a schematic cross-sectional structure diagram of the first clean water tank in the utility model;

[0028] Figure 6 It is a schematic diagram of the cross-sectional structure of the filter barrel in the utility model;

[0029] Figure 7 It is a schematic diagram of the assembly structure of the U-shaped support plate, the third clean water tank and the second clean water tank in the utility model;

[0030] Figure 8 It is a schematic cross-sectional structure diagram of the second clean water tank in the utility model;

[0031] Fig. 9 This is a schematic diagram of the structure of the third clean water tank in the utility model.

[0032] In the figure: 1, breeding pond; 10, sewage outlet; 11, bottom plate; 12, first frame-shaped support plate; 2, sewage suction tray; 3, water purification assembly; 30, first water purification tank; 300, first water inlet connecting pipe; 301, first water outlet connecting pipe; 302, second frame-shaped support plate; 303, support vertical plate; 31, buckle; 32, first tank cover; 320, rubber sealing plate; 33, filter barrel; 330, water outlet hole a; 331, handle; 34, first sponge; 35, ceramic ring; 36, second sponge; 4 , the first pump body; 40, the first liquid extraction pipe; 41, the first liquid delivery pipe; 5, the U-shaped support plate; 50, the rectangular socket; 6, the third clean water tank; 60, the second water outlet connecting pipe; 61, the rectangular positioning block; 7, the second clean water tank; 70, the second water inlet connecting pipe; 71, the water outlet hole b; 72, the frame plug plate; 73, the second tank cover; 8, the second pump body; 80, the second liquid extraction pipe; 81, the second liquid delivery pipe; 9, the rectangular water guide pipe; 90, the water outlet pipe; 13, the grid plate; 14, the water suction pipe; 15, the biochemical cotton. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] See also Figure 1-Figure 9 , the utility model provides a technical solution:

[0036] A three-dimensional high-density circulating water aquaculture device comprises a culture pond 1, wherein a first frame-shaped support plate 12 is provided in the culture pond 1 and near the bottom, a mesh plate 13 is placed on the top of the first frame-shaped support plate 12, a sewage outlet 10 is provided at the bottom of the left side of the inner wall of the culture pond 1, a sewage suction plate 2 is provided on the left side of the culture pond 1 and at the position of the sewage outlet 10, the first frame-shaped support plate 12 supports the mesh plate 13, the mesh plate 13 can prevent fish from diving to the bottom of the culture pond 1, the excrement of the fish can pass through the mesh plate 13 and sink to the bottom of the culture pond 1, and when the water flow in the culture pond 1 flows toward the sewage outlet 10, the excrement sinking to the bottom of the culture pond 1 will enter the sewage suction plate 2 along with the water flow;

[0037] A bottom plate 11 is provided at the bottom of the rear side of the breeding pond 1, a water purification assembly 3 and a first pump body 4 are provided at the top of the bottom plate 11 and near the left side, the water purification assembly 3 includes a first clean water tank 30, a first water inlet connecting pipe 300 is provided at the left side of the first clean water tank 30 and near the top of the front side, the first water inlet connecting pipe 300 is connected to the dirt suction pan 2 through the suction pipe 14, a filter barrel 33 is placed in the first clean water tank 30, which is used to filter the water entering the first clean water tank 30, the main purpose of which is to remove particulate matter in the water, and the top of the first clean water tank 30 is detachably connected to the first tank cover through two buckles 31 32, two buckles 31 are respectively located at the top of the left and right sides of the first clean water tank 30, which is convenient for the disassembly and assembly of the first box cover 32. The bottom of the first clean water tank 30 is provided with a first water outlet connecting pipe 301, and the input end of the first pump body 4 is connected to the first water outlet connecting pipe 301 through the first pumping pipe 40. The first pump body 4 is connected to an external power supply and a controller to work. The first box cover 32 closes the first clean water tank 30, and the first pump body 4 pumps out the filtered water in the first clean water tank 30. The first clean water tank 30 has a negative pressure, so that the water and excrement in the dirt suction pan 2 enter the first clean water tank 30 from the water suction pipe 14;

[0038] A U-shaped support plate 5 and a second pump body 8 are provided at the top of the bottom plate 11 and near the right side, a third clean water tank 6 is placed on the top of the U-shaped support plate 5, a second clean water tank 7 is placed on the top of the third clean water tank 6, a second water inlet connecting pipe 70 is provided on the left side and near the top of the second clean water tank 7, the output end of the first pump body 4 is connected with the second water inlet connecting pipe 70 through the first liquid delivery pipe 41, a plurality of water outlet holes b71 are provided at the bottom of the second clean water tank 7, the first pump body 4 delivers filtered water to the second clean water tank 7, the second clean water tank 7 performs a second purification on the water, and harmful substances in the water are converted into harmless substances by beneficial microorganisms, the water after the second purification is output from the plurality of water outlet holes b71 to the third clean water tank 6, the third clean water tank 6 performs a third purification on the water, and uses adsorbent materials to adsorb harmful chemicals in the water, thereby purifying the water quality;

[0039] A second water outlet connecting pipe 60 is provided at the bottom of the right side of the third clean water tank 6, and the input end of the second pump body 8 is connected to the second water outlet connecting pipe 60 through the second liquid extraction pipe 80. A rectangular water pipe 9 is provided at the top of the right side of the breeding pond 1, and the output end of the second pump body 8 is connected to the rectangular water pipe 9 through the second liquid delivery pipe 81. A plurality of water outlet pipes 90 are arranged equidistantly from front to back on the left side of the rectangular water pipe 9, and the output end of the water outlet pipe 90 is tilted downward. The second pump body 8 is connected to an external power supply and a controller to work, and the second pump body 8 draws out the water that has been purified three times in the third clean water tank 6 and transports it to the rectangular water pipe 9, and finally discharges it from the plurality of water outlet pipes 90 into the breeding pond 1, thereby realizing the circulation of breeding water.

[0040] In this embodiment, support vertical plates 303 are provided on both the left and right sides of the bottom of the first clean water tank 30 , and the bottom of the support vertical plates 303 is fixedly connected to the top of the bottom plate 11 for raising the first clean water tank 30 .

[0041] Specifically, a rubber sealing plate 320 is provided at the bottom of the first tank cover 32 , and the outer wall of the rubber sealing plate 320 is tightly fitted with the top of the inner wall of the first clean water tank 30 to ensure the sealing of the connection between the first tank cover 32 and the first clean water tank 30 .

[0042] Furthermore, a second sponge 36 is placed at the bottom of the filter barrel 33, a first sponge 34 is provided directly above the second sponge 36, a ceramic ring 35 is filled between the first sponge 34 and the second sponge 36, and the top of the filter barrel 33 is located below the first water inlet connecting pipe 300. The first sponge 34, the ceramic ring 35 and the second sponge 36 filter the water entering the filter barrel 33 in turn to effectively remove particulate matter in the water.

[0043] Furthermore, a second frame-shaped support plate 302 for supporting the filter barrel 33 is provided at the bottom of the inner wall of the first clean water tank 30, and a plurality of water outlet holes a330 are provided at the bottom of the filter barrel 33. The second frame-shaped support plate 302 can prevent the bottom of the filter barrel 33 from fitting against the bottom of the inner wall of the first clean water tank 30, so that the filtered water in the filter barrel 33 can be discharged from the plurality of water outlet holes a330. Handles 331 are provided on the left and right sides of the top of the filter barrel 33, which is convenient for the staff to take the filter barrel 33 out of the first clean water tank 30.

[0044] Furthermore, a second tank cover 73 is provided on the top of the second clean water tank 7 to prevent dust and other impurities from entering the second clean water tank 7. A frame-shaped plug plate 72 is provided on the bottom of the second clean water tank 7. The outer wall of the frame-shaped plug plate 72 fits with the top of the inner wall of the third clean water tank 6 to facilitate the installation of the second clean water tank 7 and the third clean water tank 6. Biochemical cotton 15 is placed in the second clean water tank 7. The biochemical cotton 15 can cultivate nitrifying bacteria and convert harmful substances in the water into harmless substances through beneficial microorganisms, thereby achieving filtration.

[0045] Furthermore, the third water purification tank 6 is filled with activated carbon particles, which can absorb harmful chemicals in the water to achieve the effect of purifying water.

[0046] Furthermore, rectangular positioning blocks 61 are provided at the bottom and near the left and right sides of the third clean water tank 6, and rectangular sockets 50 are opened at the top and near the left and right sides of the U-shaped support plate 5. The two rectangular positioning blocks 61 are respectively inserted into the two rectangular sockets 50 to improve the stability of the third clean water tank 6 when it is placed.

[0047] When the three-dimensional high-density circulating aquaculture device of this embodiment is in use, the first pump body 4 pumps out the filtered water in the first clean water tank 30, and the negative pressure in the first clean water tank 30 causes the water and excrement in the suction plate 2 to enter the first clean water tank 30 from the suction pipe 14. The filter barrel 33 in the first clean water tank 30 is used to filter the water entering the first clean water tank 30. The first sponge 34, the ceramic ring 35 and the second sponge 36 filter the water entering the filter barrel 33 in turn to effectively remove particulate matter in the water. The first pump body 4 transports the filtered water to the second clean water tank 7. The biochemical cotton 15 in the second clean water tank 7 can cultivate nitrifying bacteria, and the harmful substances in the water are converted into harmless substances through beneficial microorganisms, thereby purifying the water for the second time. The purified water is output from multiple water outlets b71 to the third clean water tank 6. The activated carbon particles in the third clean water tank 6 can absorb harmful chemicals in the water, thereby purifying the water quality. The second pump body 8 extracts the water in the third clean water tank 6 that has been purified three times and transports it to the rectangular water pipe 9. Finally, it is discharged from multiple water outlet pipes 90 to the breeding pond 1, thereby realizing the circulation of breeding water. A water flow from top to bottom is formed in the breeding pond 1. The grid plate 13 can prevent fish from diving to the bottom of the breeding pond 1. The fish excrement can pass through the grid plate 13 and sink to the bottom of the breeding pond 1. When the water flow in the breeding pond 1 flows toward the sewage outlet 10, the excrement that sinks to the bottom of the breeding pond 1 will enter the sewage suction plate 2 with the water flow, thereby allowing the fish excrement in the breeding pond to be extracted.

[0048] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A three-dimensional high-density circulating water aquaculture device, comprising a culture pond (1), characterized in that: A first frame-shaped support plate (12) is provided in the culture pond (1) near the bottom, a grid plate (13) is placed on the top of the first frame-shaped support plate (12), a sewage outlet (10) is provided at the bottom of the left side of the inner wall of the culture pond (1), a sewage suction pan (2) is provided on the left side of the culture pond (1) and at the position of the sewage outlet (10), a bottom plate (11) is provided at the bottom of the rear side of the culture pond (1), a water purification component (3) and a first pump body (4) are provided on the top of the bottom plate (11) and near the left side, the water purification component (3) comprising A first clean water tank (30), a first water inlet connecting pipe (300) is provided on the left side of the first clean water tank (30) and near the front top, the first water inlet connecting pipe (300) is connected to the dirt suction pan (2) through a water suction pipe (14), a filter barrel (33) is placed in the first clean water tank (30), a first tank cover (32) is detachably connected to the top of the first clean water tank (30) through two buckles (31), a first water outlet connecting pipe (301) is provided at the bottom of the first clean water tank (30), and the input end of the first pump body (4) is connected to the first clean water tank (30) through a first pump body (4) The first liquid extraction pipe (40) is connected to the first water outlet connecting pipe (301); a U-shaped support plate (5) and a second pump body (8) are provided at the top of the bottom plate (11) and near the right side; a third clean water tank (6) is placed on the top of the U-shaped support plate (5); a second clean water tank (7) is placed on the top of the third clean water tank (6); a second water inlet connecting pipe (70) is provided on the left side of the second clean water tank (7) and near the top; the output end of the first pump body (4) is connected to the second water inlet connecting pipe (70) through the first liquid delivery pipe (41); A plurality of water outlet holes b (71) are provided at the bottom of the second clean water tank (7), a second water outlet connecting pipe (60) is provided at the bottom of the right side of the third clean water tank (6), the input end of the second pump body (8) is connected to the second water outlet connecting pipe (60) via a second liquid extraction pipe (80), a rectangular water guide pipe (9) is provided at the top of the right side of the breeding pond (1), the output end of the second pump body (8) is connected to the rectangular water guide pipe (9) via a second liquid delivery pipe (81), and a plurality of water outlet pipes (90) are provided on the left side of the rectangular water guide pipe (9) and are arranged equidistantly from front to back.

2. The three-dimensional high-density circulating aquaculture device according to claim 1, characterized in that: Support vertical plates (303) are provided on both left and right sides of the bottom of the first clean water tank (30), and the bottom of the support vertical plates (303) is fixedly connected to the top of the bottom plate (11).

3. The three-dimensional high-density circulating aquaculture device according to claim 1 is characterized in that: A rubber sealing plate (320) is provided at the bottom of the first tank cover (32), and the outer wall of the rubber sealing plate (320) is tightly fitted to the top of the inner wall of the first clean water tank (30).

4. The three-dimensional high-density circulating aquaculture device according to claim 1, characterized in that: A second sponge (36) is placed at the bottom of the filter barrel (33), a first sponge (34) is arranged directly above the second sponge (36), and a ceramic ring (35) is filled between the first sponge (34) and the second sponge (36).

5. The three-dimensional high-density circulating aquaculture device according to claim 1 is characterized in that: A second frame-shaped support plate (302) for supporting a filter barrel (33) is provided at the bottom of the inner wall of the first clean water tank (30), a plurality of water outlet holes a (330) are provided at the bottom of the filter barrel (33), and handles (331) are provided on both left and right sides of the top of the filter barrel (33).

6. The three-dimensional high-density circulating aquaculture device according to claim 1, characterized in that: The top of the second clean water tank (7) is provided with a second tank cover (73), the bottom of the second clean water tank (7) is provided with a frame-shaped plug plate (72), the outer wall of the frame-shaped plug plate (72) is in contact with the top of the inner wall of the third clean water tank (6), and biochemical cotton (15) is placed in the second clean water tank (7).

7. The three-dimensional high-density circulating aquaculture device according to claim 1 is characterized in that: The third clean water tank (6) is filled with activated carbon particles.

8. The three-dimensional high-density circulating aquaculture device according to claim 1, characterized in that: Rectangular positioning blocks (61) are provided at the bottom and near the left and right sides of the third clean water tank (6), and rectangular sockets (50) are provided at the top and near the left and right sides of the U-shaped support plate (5), and the two rectangular positioning blocks (61) are respectively plugged into the two rectangular sockets (50).

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