High-density culture aeration tank with uniform aeration

Abstract

The utility model aims to provide the high-density culture aeration tank which is good in aeration effect, effectively avoids high-density accumulation of fish fries and is uniform in aeration. The device comprises a culture pond, an aerator arranged on one side of the culture pond, a first air delivery pipe which is fixedly connected to the outer wall of the culture pond and is communicated with the air outlet end of the aerator, and a second air delivery pipe which is arranged on the inner wall of the culture pond and is communicated with the first air delivery pipe, the second air conveying pipe is arranged in the middle of the inner wall of the culture pond, a plurality of aeration supports are arranged on the second air conveying pipe in the circumferential direction, each aeration support is alternately provided with a plurality of first aeration pipes and a plurality of second aeration pipes, and an inclination angle is formed between the adjacent first aeration pipe and second aeration pipe; the bottom of the culture pond is provided with a plurality of oxygenation boxes which are communicated with the second air conveying pipe and used for supplying oxygen to stir water flow. The aeration tank is applied to the technical field of high-density culture aeration tanks.

Description

Technical Field

[0001] The utility model relates to the technical field of high-density aquaculture aeration ponds, and particularly relates to a high-density aquaculture aeration pond with uniform aeration. Background Art

[0002] Hanging fish refers to certain fish that are transferred to a clear water pond for cultivation after growing to adult fish. During this period, no feed, grass or other baits are fed, and no fish medicine is administered to make the fish "lose weight", reduce the fat content of the fish muscle, make the meat firmer, and reduce the fishy smell. The main breeding modes of hanging fish are pond hanging, river net cage hanging and breeding box hanging. Due to the large hanging density and the difficulty of flowing water cultivation in the breeding box, it is difficult to control the dissolved oxygen content and the bottom environment of the breeding box, which is likely to cause hypoxia damage.

[0003] Common aerators generally include impeller aerators, waterwheel aerators and air-inflating aerators. However, when the breeding base is large, the impeller and waterwheel aerators agitate the water body to increase the contact area between the water body and the air, thereby increasing the dissolved oxygen content of the water body and forming a certain water flow. The impeller and waterwheel aerators will injure the fry in the breeding box with a small area and high breeding density, and then affect the survival rate of the fry; the air-inflating aerator generally aerates at the bottom of the pond, and the gas moves from bottom to top to agitate the water body to form a water flow. The existing air-inflating aerator generally sprays gas in the form of a nano aeration pipe or an aeration disc. In the breeding box with a large breeding density, the pipeline arranged at the bottom is easily blocked by the dropped biomass, affecting the air output and reducing the aeration efficiency. Moreover, the fry in the breeding pond usually accumulate in places with high dissolved oxygen content. The air-inflating aerator easily makes the fry accumulate near the aeration pipeline. The excessive density in the fish group area affects the efficiency of biological feed feeding. The fry with small body size that cannot eat biological feed for a long time are weak in constitution and prone to diseases. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a high-density aquaculture aeration pond with good aeration effect and effectively avoiding high-density accumulation of fry.

[0005] The technical solution adopted by the utility model is as follows: the utility model includes a breeding pond, an aerator arranged on one side of the breeding pond, a first air pipe fixedly connected to the outer wall of the breeding pond and communicated with the air outlet end of the aerator, and a second air pipe arranged on the inner wall of the breeding pond and communicated with the first air pipe. The second air pipe is arranged in the middle of the inner wall of the breeding pond. A plurality of aeration brackets are arranged along the circumferential direction of the second air pipe. Each aeration bracket is alternately provided with a plurality of first air pipes and a plurality of second air pipes. An inclination angle is arranged between adjacent first air pipes and second air pipes. A plurality of oxygenation boxes communicated with the second air pipe are arranged at the bottom of the breeding pond for oxygen supply and water flow agitation.

[0006] Furthermore, the oxygenation tank includes a connecting pipe connected to the second air delivery pipe, an oxygenation base fixedly connected to the bottom of the aquaculture pond, an aeration coil disposed on the top of the oxygenation base, and a baffle fixedly connected to the oxygenation base above the aeration coil. The oxygenation base is provided with an air duct, the first end of the air duct is communicated with the connecting pipe, the second end of the air duct is communicated with the aeration coil, a ventilation hole for bubbles to pass through is formed in the middle of the baffle, and a grille for blocking biomass is formed in the ventilation hole.

[0007] Furthermore, the baffle is formed with an air flow guiding channel with a gradually decreasing area from bottom to top and communicated with the ventilation hole.

[0008] Furthermore, the inclination angle is between 20 - 45 degrees.

[0009] Furthermore, the length of the first aeration pipe is greater than the length of the second aeration pipe.

[0010] Furthermore, a sewage collection surface with a gradually decreasing diameter from top to bottom is formed at the bottom of the aquaculture pond, and a plurality of the oxygenation tanks are fixedly connected to the sewage collection surface. A sewage collection and drainage hole is formed at the bottom of the sewage collection surface, and a diversion sewage discharge member for sewage discharge and circulating water outflow is arranged at the sewage collection and drainage hole.

[0011] Furthermore, a drain pipe for the middle circulating water to flow out is arranged in the middle of the diversion sewage discharge member. A sewage discharge groove for the bottom sewage to flow out is connected to the side wall of the drain pipe. The sewage discharge groove is fixedly connected to the sewage collection and drainage hole. A plurality of water inlet holes are formed in the upper part of the drain pipe, and a water outlet connected to an external regulating valve is arranged in the lower part of the drain pipe. A plurality of sewage collection ports are formed in the upper part of the sewage discharge groove, and a sewage discharge port connected to an external regulating valve is arranged in the lower part of the sewage discharge port.

[0012] The beneficial effects of the present utility model are as follows: Since multiple groups of aeration brackets of the present utility model are arranged around the inner wall of the aquaculture pond, the aeration is uniform all around, effectively avoiding the accumulation of fry in the oxygen-rich area of the aquaculture pond and improving the effective rate of biological feed feeding; the positions of the first aeration pipe and the second aeration pipe are arranged in a structure with an angular stagger, and an included angle of 20 - 45 degrees is formed between adjacent first aeration pipes and second aeration pipes, leaving more space for water flow during the aeration and oxygenation process, increasing the contact area between oxygen and water body, and the formed bubbles better agitate the water body to form a water flow cycle, effectively increasing the oxygen content in the water body. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural view of the present utility model;

[0014] Figure 2 is a schematic structural view of the aeration bracket of the present utility model;

[0015] Figure 3 is a schematic structural view of the aeration tank of the present utility model;

[0016] Figure 4 is Figure 3 a partial enlarged view of part A in

[0017] Figure 5 a schematic structural view of the baffle cover of the present utility model;

[0018] Figure 6 a sectional view of the breeding pond of the present utility model;

[0019] Figure 7 a schematic structural view of the flow - dividing sewage - discharging member of the present utility model;

[0020] Figure 8 is a sectional view of the flow - dividing sewage - discharging member of the present utility model.

[0021] In the figure: 1, breeding pond; 11, sewage - collecting surface; 12, sewage - collecting and draining hole; 2, aerator; 3, first air - conveying pipe; 4, second air - conveying pipe; 5, aeration bracket; 51, first aeration pipe; 52, second aeration pipe; 6, aeration tank; 61, connecting pipe; 62, aeration base; 63, aeration coil; 64, baffle cover; 65, ventilation hole; 66, grille; 67, air - flow guiding channel; 7, flow - dividing sewage - discharging member; 71, drain pipe; 72, sewage - discharging groove; 73, water inlet hole; 74, water outlet; 75, sewage - discharging port; 76, sewage - collecting port. Specific embodiments

[0022] As Figures 1 to 8As shown in the figure, in this embodiment, the utility model includes a breeding pond 1, an aerator 2 arranged on one side of the breeding pond 1, a first air pipe 3 fixedly connected to the outer wall of the breeding pond 1 and communicating with the air outlet end of the aerator 2, and a second air pipe 4 arranged on the inner wall of the breeding pond 1 and communicating with the first air pipe 3. The second air pipe 4 is arranged in the middle of the inner wall of the breeding pond 1. A plurality of aeration brackets 5 are arranged along the circumferential direction of the second air pipe 4. Each aeration bracket 5 is alternately provided with a plurality of first air pipes 51 and a plurality of second air pipes 52. An inclination angle is provided between adjacent first air pipes 51 and second air pipes 52. A plurality of oxygenation boxes 6 for oxygen supply and water flow agitation are arranged at the bottom of the breeding pond 1 and communicate with the second air pipe 4. The breeding pond 1 is circular. The first air pipe 3 is arranged along the outside of the breeding pond 1. A plurality of connecting pipes are arranged between the first air pipe 3 and the second air pipe 4. The connecting pipes allow the oxygen output from the aerator 2 into the first air pipe 3 to flow into the second air pipe 4, having an effect of buffering and equalizing the air pressure. The second air pipe 4 is arranged along the inner wall of the breeding pond 1. One end of each of the plurality of aeration brackets 5 is connected and fixed to the second air pipe 4 by threading or welding. The other end of each aeration bracket 5 points to the central axis of the breeding pond 1. Each aeration bracket 5 extends a certain distance. A plurality of air holes are formed on the first air pipe 51 and the second air pipe 52. The first air pipe 51 and the second air pipe 52 push oxygen into the water through a plurality of air pipes to form dense bubbles, increasing the water content. A plurality of groups of aeration brackets 5 are arranged around the inner wall of the breeding pond 1, with uniform aeration all around, effectively preventing fry from accumulating in the oxygen-rich area of the breeding pond 1 and improving the efficiency of biological feed feeding. The positions of the first air pipe 51 and the second air pipe 52 are arranged in an angular staggered structure. An included angle of 20 - 45 degrees is formed between adjacent first air pipes 51 and second air pipes 52, leaving more space for water flow during the aeration and oxygenation process, increasing the contact area between oxygen and water body. The formed bubbles better agitate the water body to form a water flow cycle, effectively increasing the oxygen content in the water body;

[0023] A plurality of oxygenation boxes 6 arranged at the bottom inject oxygen from the bottom of the breeding pond 1, forming bubbles in the water bottom to agitate the water body, accelerating the water flow cycle. At the same time, the upward water flow formed by the oxygenation boxes 6 in the middle cooperates with the upward water flows formed by multiple groups of aeration brackets 5 around, forming two downward water flows between the aeration brackets 5 and the oxygenation and among the three groups of oxygenation boxes 6, improving the water flow cycle efficiency and at the same time precipitating the feces produced by the fry or the biomass produced by feeding.

[0024] In this embodiment, the oxygenation tank 6 includes a connecting pipe 61 connected to the second air delivery pipe 4, an oxygenation base 62 fixedly connected to the bottom of the aquaculture pond 1, an aeration coil 63 disposed on the top of the oxygenation base 62, and a baffle 64 fixedly connected to the oxygenation base 62 above the aeration coil 63. The oxygenation base 62 is provided with an air passage, the first end of the air passage is communicated with the connecting pipe 61, the second end of the air passage is communicated with the aeration coil 63, a ventilation hole 65 for bubbles to pass through is formed in the middle of the baffle 64, and a grid 66 for blocking biomass is formed in the ventilation hole 65. The aeration coil 63 is in a flexible pipe structure and is formed with a plurality of aeration holes. Oxygen is pushed into the water body through the aeration holes to form dense bubbles. The baffle 64 is provided with a grid 66 structure for blocking larger biomass. During use, the bubbles move upward through the grid 66, and the smaller and lighter biomass will move upward with the water flow, while the larger biomass is deposited in the grid 66 structure. When the grid 66 is completely blocked by biomass, the bubbles flow out from the periphery of the bubble baffle 64. The baffle 64 structure can effectively reduce the situation of biomass blocking the air path and ensure the oxygenation and aeration efficiency of the oxygenation tank 6.

[0025] In this embodiment, the baffle 64 is formed with an air flow guiding channel 67 that communicates with the ventilation hole 65 and gradually decreases in area from bottom to top. The air flow guiding channel 67 is used to guide the bubbles formed by the aeration coil 63 to flow out from the ventilation hole 65, accelerating the bubble movement speed so as to improve the effect of the bubbles pushing the water body to flow.

[0026] In this embodiment, the inclination angle is between 20 - 45 degrees, and the adjacent first air delivery pipe 51 and second air delivery pipe 52 form an included angle of 20 - 45 degrees, leaving more space for the water flow during the aeration oxygenation process, increasing the contact area between oxygen and the water body, and the formed bubbles better agitate the water body to form a water flow cycle, effectively increasing the oxygen content in the water body.

[0027] In this embodiment, the length of the first air delivery pipe 51 is greater than the length of the second air delivery pipe 52. The first air delivery pipe 51 and the second air delivery pipe 52 with alternating lengths improve the water body fluidity between the adjacent first air delivery pipe 51 and second air delivery pipe 52.

[0028] In this embodiment, a sewage collection surface 11 with a gradually decreasing diameter from top to bottom is formed at the bottom of the aquaculture pond 1. A plurality of the oxygenation tanks 6 are fixedly connected to the sewage collection surface 11. A sewage collection and drainage hole 12 is formed at the bottom of the sewage collection surface 11, and a diversion sewage discharge member 7 for sewage discharge and circulating water outflow is arranged at the sewage collection and drainage hole 12. The inclined sewage collection surface 11 is beneficial for the deposited dirt to flow along the inclined surface into the diversion sewage collection member.

[0029] In this embodiment, a drain pipe 71 for the outflow of the middle circulating water is provided in the middle of the shunt sewage discharge member 7. A sewage discharge tank 72 for the outflow of the bottom sewage is connected to the side wall of the drain pipe 71. The sewage discharge tank 72 is fixedly connected to the sewage collection and drainage hole 12. A plurality of water inlet holes 73 are formed in the upper part of the drain pipe 71. An outlet 74 connected to an external regulating valve is provided in the lower part of the drain pipe 71. A plurality of sewage collection ports 76 are formed in the upper part of the sewage discharge tank 72. A sewage discharge port 75 connected to an external regulating valve is provided in the lower part of the sewage discharge port 75. The diameters of a plurality of drain holes are smaller than the body size of the fry, so as to prevent the fry from escaping through the drain holes. The drain pipe 71 and the sewage discharge tank 72 are not connected to each other. The height of the sewage discharge port 75 is lower than the height of the water inlet holes 73. The drain pipe 71 is used to discharge the sinking water flow between the three groups of oxygenation tanks 6 to the outside.

[0030] The working principle of the present utility model:

[0031] The oxygenator 2 outputs oxygen to the first air delivery pipe 3. The oxygen in the first air delivery pipe 3 enters the second air delivery pipe 4 through multiple groups of connecting pipes. The oxygen enters into a plurality of aeration brackets 5 along the second air delivery pipe 4, and forms small bubbles through the air holes of a plurality of first aeration pipes 51 and a plurality of second aeration pipes 52 and enters the water body of the aquaculture pond 1, forming an annular aeration zone on the inner wall of the aquaculture pond 1. The connecting pipe 61 of the oxygenation tank 6 is connected to the second air delivery pipe 4. The oxygen enters the aeration coil 63 through the connecting pipe 61. A plurality of air holes provided on the aeration coil 63 enable the oxygen to form small bubbles and enter the aquaculture water body, forming an aeration area in the middle of the aquaculture pond 1. The shunt sewage discharge member 7 located at the bottom of the aquaculture pond 1 collects and discharges the water body in the middle and the dirt at the bottom layer.

[0032] Although the embodiments of the present utility model are described with actual solutions, they do not constitute a limitation to the meaning of the present utility model. For those skilled in the art, the modification of its implementation solutions according to this specification and the combination with other solutions are obvious.

Claims

1. An aeration tank for high-density aquaculture with uniform aeration, comprising an aquaculture tank (1), an aerator (2) arranged on one side of the aquaculture tank (1), a first air delivery pipe (3) fixedly connected to the outer wall of the aquaculture tank (1) and communicated with the air outlet end of the aerator (2), and a second air delivery pipe (4) arranged on the inner wall of the aquaculture tank (1) and communicated with the first air delivery pipe (3), characterized in that: The second air delivery pipe (4) is arranged in the middle of the inner wall of the culture pond (1). A number of aeration brackets (5) are arranged along the circumferential direction of the second air delivery pipe (4). Each aeration bracket (5) is alternately provided with a number of first air delivery pipes (51) and a number of second air delivery pipes (52). An inclination angle is provided between adjacent first air delivery pipes (51) and second air delivery pipes (52). A number of oxygenation boxes (6) for supplying oxygen and agitating water flow are arranged at the bottom of the culture pond (1) and are communicated with the second air delivery pipe (4).

2. The aeration tank for high-density aquaculture with uniform aeration according to claim 1, wherein: The oxygenation box (6) includes a connecting pipe (61) connected to the second air delivery pipe (4), an oxygenation base (62) fixedly connected to the bottom of the culture pond (1), an aeration coil pipe (63) arranged on the top of the oxygenation base (62), and a baffle (64) fixedly connected to the oxygenation base (62) and located above the aeration coil pipe (63). The oxygenation base (62) is provided with an air duct. The first end of the air duct is communicated with the connecting pipe (61), and the second end of the air duct is communicated with the aeration coil pipe (63). A ventilation hole (65) for bubbles to pass through is formed in the middle of the baffle (64). A grid (66) for blocking biomass is formed in the ventilation hole (65).

3. The aeration tank for high-density aquaculture with uniform aeration according to claim 2, wherein: The baffle (64) is formed with an air flow guiding channel (67) with a gradually decreasing area from bottom to top and communicated with the ventilation hole (65).

4. The aeration tank for high-density aquaculture with uniform aeration according to claim 1, wherein: The inclination angle is between 20 - 45 degrees.

5. The aeration tank for high-density aquaculture with uniform aeration according to claim 2, characterized in that: The length of the first air delivery pipe (51) is greater than the length of the second air delivery pipe (52).

6. The aeration tank for high-density aquaculture with uniform aeration according to claim 1, characterized in that: A sewage collection surface (11) with a gradually decreasing diameter from top to bottom is formed at the bottom of the culture pond (1). A number of the oxygenation boxes (6) are fixedly connected to the sewage collection surface (11). A sewage collection and drainage hole (12) is formed at the bottom of the sewage collection surface (11). A shunt sewage discharge member (7) for sewage discharge and circulating water outflow is arranged at the sewage collection and drainage hole (12).

7. The aeration tank for high-density aquaculture with uniform aeration according to claim 6, characterized in that: A drain pipe (71) for the middle circulating water to flow out is arranged in the middle of the shunt sewage discharge member (7). A sewage discharge groove (72) for the bottom sewage to flow out is connected to the side wall of the drain pipe (71). The sewage discharge groove (72) is fixedly connected to the sewage collection and drainage hole (12). A number of water inlet holes (73) are formed in the upper part of the drain pipe (71). An outlet (74) connected to an external regulating valve is arranged in the lower part of the drain pipe (71). A number of sewage collection ports (76) are formed in the upper part of the sewage discharge groove (72). A sewage discharge port (75) connected to an external regulating valve is arranged in the lower part of the sewage discharge groove (72).

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