JP6955736B2 - Aquatic organism breeding equipment - Google Patents

Description

The present invention relates to a technique for efficiently breeding bivalves such as oysters, clams, clams, ark shells, tresus keenae, fulvia mutica, saxidomus purpurata, hard clams, and clinocardium californicus, and aquatic organisms such as catfish.

Conventionally, as a method of raising bivalve larvae, the larvae are housed in a tubular breeding container having a mesh structure on the bottom surface, and an ascending flow is generated in the container using a submersible pump or an air pump as a pumping drive unit. Therefore, an upwelling method for efficiently feeding a natural feed contained in water is widely known (for example, Patent Document 1 and the like).

Using equipment that includes a waterway for discharge and a frame that holds multiple breeding containers, an opening facing the waterway is provided at the top of the breeding container, and a submersible pump draws water from the container through the waterway to raise the flow. Is known as FLUPSY. In addition, an air lift method is known as an air lift method in which a bent pumping pipe is installed in the breeding container and ventilation is performed from the air pump in the middle of the pipe to generate an ascending flow by utilizing the air lift action of the ejected bubbles. Has been done.

Japanese Unexamined Patent Publication No. 2012-244960

In the method of pumping water using a common submersible pump for a plurality of breeding containers installed in a waterway as in the technique described in Patent Document 1, there is a problem that the equipment itself becomes large and pumping of each breeding container. There is a problem that it is difficult to adjust the amount. Since the pump, which is the pumping drive unit, is submerged in water, biological deposits are easily attached and need to be removed, and the pump is heavily consumed due to rust or the like, which causes a problem that maintenance is troublesome and costly.

In the conventional air lift method, since the pumping pipe is arranged in the breeding container, there is a problem that the length of the pumping pipe is limited and it is difficult to secure a sufficient pumping amount. Another common problem between the submersible pump method and the air lift method is that it is difficult to freely set the water depth at which the breeding container is installed.

In view of the above, it is an object of the present invention to provide a technique for freely changing the pumped water depth while ensuring a sufficient pumped water amount in an aquatic organism breeding device that employs an air lift type upwelling. And.

The aquatic organism breeding apparatus of the present invention includes a cylindrical container, a pumping pipe that is connected to the container and communicates with the inside of the container and has a mesh on the inner surface, and an air supply pipe connected to the pumping pipe. An air pump for supplying air to the inside of the pumping pipe is provided , and the air pump supplies air to the inside of the pumping pipe through the air supply pipe .

By providing the pumping pipe with a mesh on the inner surface in the tubular container in this way, the length of the pumping pipe is not restricted, and the length of the pumping pipe can be changed while ensuring the amount of pumped water. The pumping water depth can be adjusted freely. In addition, by adopting the air lift method, the air pump that serves as the pumping drive unit can be made non-contact underwater, and maintainability can be improved.

The container includes a cylindrical main body with open upper and lower surfaces and a lid that closes the upper surface of the main body and is detachably attached to the main body, and the pumping pipe is connected to the lid. ..

In this way, the container is separated into the main body and the lid so that the lid can be removed from the main body, and the pumping pipe is attached to the lid side to access the inside of the main body with the lid removed from the main body. It's easy. This facilitates operations such as taking in and out aquatic organisms inside the main body, cleaning the inner surface of the main body, and replacing the pumping pipe.

The structure including the container and the pumping pipe is set heavier than water and can be submerged by hanging.

In this way, the configuration that allows subsidence in water eliminates the need for special equipment such as a frame that supports the structure during installation (subsidence in water), and makes it possible to reduce the size of the equipment itself. ..

The structure includes a plurality of structures including the container, a mesh structure, and a pumping pipe, and the structure is supplied with air from a common air pump.

In this way, sharing the air pump when installing a plurality of devices is advantageous in terms of cost.

According to the present invention, in an aquatic organism breeding device that employs an air lift type upwelling, it is possible to provide a technique capable of freely changing the pumped water depth while ensuring a sufficient pumped water amount.

The figure which shows the breeding apparatus. Cross-sectional view of the breeding device. The figure which shows the first method of adjusting the pumping amount of a breeding apparatus. The figure which shows the 2nd method of adjusting the pumping amount of a breeding apparatus. The figure which shows the 3rd method of adjusting the pumping amount of a breeding apparatus. The figure which shows an example which uses the breeding apparatus. The figure which shows an example which uses a plurality of breeding equipment. The figure which shows an example which uses a breeding apparatus in an aquarium.

The configuration of the breeding apparatus will be described with reference to FIGS. 1 and 2. FIG. 1 is a side view showing the overall configuration of the breeding device 1, and FIG. 2 is a cross-sectional view showing the internal structure of the breeding device 1.

The breeding device 1 is a device for breeding an aquatic organism 2. The aquatic organism 2 is a bivalve juvenile such as oysters, clams, clams, ark shells, clams, fulvia mutica, saxidomus purpurata, hard clams, clinocardium californicus, etc. Is. The breeding device 1 causes upwelling by an air lift method, and feeds the feed contained in the water to the aquatic organism 2 housed in the device.

The breeding device 1 includes a cylindrical container 10 having an open lower surface, a mesh structure 15 attached to the lower surface of the container 10, and a pumping pipe 20 connected to the outer side of the upper part of the container 10 and extending upward from the container 10. A mesh 25 attached to the upper end of the pumping pipe 20, an air supply pipe 30 connected to the base of the pumping pipe 20, and an air pump 35 for supplying air to the inside of the pumping pipe 20 through the air supply pipe 30 are provided.

The container 10 includes a cylindrical main body 11 whose upper and lower surfaces are open, and a lid 12 that closes the upper surface of the main body 11. A flange 13 is provided on the peripheral edge of the lower surface of the main body 11, and the mesh structure 15 is attached to the flange 13. The lid 12 constitutes the upper surface of the container 10 and is detachably attached to the main body 11. An opening 14 is provided in the center of the lid 12, and a pumping pipe 20 is connected to the opening 14. The container 10 may have a tubular shape extending in the vertical direction, and may have a cylindrical shape or a prismatic shape. The aquatic organism 2 is housed inside the container 10.

The mesh structure 15 has a mesh portion 16 having a mesh corresponding to the size of the aquatic organism 2 (that is, a mesh having a fineness so that the aquatic organism 2 does not fall), and the mesh portion 16 for fixing the mesh portion 16 to the flange 13 of the main body 11. Includes a fixing portion 17. The mesh portion 16 is configured to have a size corresponding to the opening on the lower surface of the main body 11. A fixing portion 17 serving as a frame body at the time of fixing is provided around the mesh portion 16 so as to correspond to the flange 13. In the mesh structure 15 of the present embodiment, by changing to the mesh-like portion 16 of the mesh according to the size of the aquatic organism 2, it is possible to easily cope with the case where the aquatic organism 2 to be bred is changed.

The pumping pipe 20 is a cylindrical member whose upper and lower surfaces are open, and extends upward from the container 10. The lower end of the pumping pipe 20 is fixed to the opening 14 of the lid 12 that constitutes the upper surface of the container 10. The pumping pipe 20 communicates with the inside of the container 10 through the opening 14. An air outlet 21 is provided at the base of the pumping pipe 20, and an air supply pipe 30 is connected to the air outlet 21. An ejection port 31 for ejecting air is provided at the tip of the air supply pipe 30. In this way, by providing the air outlet 21 serving as the air blowing portion at the lower part of the pumping pipe 20, the air lift effect can be enhanced and the air supply pipe 30 can be easily routed.

In this embodiment, two air outlets 21 are provided at the lower part of the pumping pipe 20 and the air supply pipe 30 is connected to each of them. However, the air supply pipe for supplying air to the pumping pipe 20 is shown. The number of 30 is not limited to this. The air outlet 21 may be arranged not only at the base of the pumping pipe 30 but also at an intermediate portion or the like, and the position can be set at an arbitrary position according to the required air lift capacity or the like.

Further, in the present embodiment, the pumping pipe 20 is connected to the upper surface of the container 10 by providing the pumping pipe 20 on the lid 12 of the container 10, but if the pumping pipe 20 is arranged outside the container 10. Alternatively, the pumping pipe 20 may be connected to the upper outer surface of the container 10. Further, the pumping pipe 20 may be connected to two places on the upper side surface of the container 10.

As described above, the pumping pipe 20 of the present embodiment is not extended inside the container 10, but is provided outside the container 10. As a result, the entire area inside the container 10 can be used as a breeding area, enabling high-density and efficient breeding. Further, since there is no restriction when the pumping pipe 20 is arranged inside the container 10, the length of the pumping pipe 20 can be freely changed and the water depth of the container 10 can be freely adjusted. Further, by adjusting the water depth of the container 10 and freely changing the pumping water depth, it is possible to avoid the larval distribution water depth of sessile organisms.

Further, since the breeding device 1 of the present embodiment has a configuration in which the pumping water depth can be freely changed, it is possible to make it less susceptible to wave interference by increasing the water depth. In other words, it can be used not only in quiet areas such as aquaculture ponds, but also in waters affected by waves, and can be used in waters suitable for the growth conditions of aquatic organisms 2 to be bred. be.

Further, in the present embodiment, the container 10 is composed of the main body 11 and the lid 12, and the pumping pipe 20 is fixed to the lid 12. That is, by removing the lid 12 from the main body 11, the main body 11 can be treated as an independent column. As a result, the inside of the main body 11 that houses the aquatic organism 2 can be easily accessed, and maintenance such as taking in and out the aquatic organism 2 and cleaning the inside can be easily performed.

At the same time, it is also possible to remove the lid 12 to which the pumping pipe 20 is attached from the main body 11 to perform maintenance on the pumping pipe 20 side. For example, when changing the length of the pumping pipe 20, it is possible to easily perform the work by separating it from the large main body 11. Further, when the pumping pipe 20 is configured as a cylinder extending linearly upward from the container 10, maintenance such as cleaning the inner surface of the pumping pipe 20 can be easily performed even when the pumping pipe 20 is attached to the lid 12. It is possible.

Air is supplied from the air pump 35 through the air supply pipe 30, and air bubbles are ejected from the ejection port 31 into the pumping pipe 20. When the ejected bubbles rise in the pumping pipe 20, the water in the pipe is pumped and an ascending flow is generated in the container 10. As described above, in the present embodiment, the pumping pipe 20 is provided in the upper part of the container 10, and the air bubbles from the air pump 35 serving as the pumping drive unit are ejected to the lower part of the pumping pipe 20 to upwell in the container 10. The air lift method that causes the problem is adopted.

The air supply pipe 30 is a long pipe having flexibility such as an air hose. The air pump 35 connected to the air supply pipe 30 is arranged at a predetermined position on land (or on a floating body) having a good installation environment. For example, while the container 10 equipped with the pumping pipe 20 is submerged in water, the air supply pipe 30 is extended and the air pump 35 is installed in a building on land or in a building on a floating body. By making the air pump 35 non-contact underwater in this way, it is possible to prevent corrosion of the air pump 35 and improve its maintainability.

A mesh 25 is attached to the upper end of the pumping pipe 20. The mesh 25 is a net-like member having a mesh corresponding to the size of the aquatic organism 2. As described above, in the breeding apparatus 1, the aquatic organism 2 to be accommodated is formed by forming a space isolated inside by the mesh structure 15 provided on the lower surface of the container 10 and the mesh 25 provided on the pumping pipe 20. It is devised so that it does not dissipate to the outside. Further, with such a configuration, the inside of the pumping pipe 20 can be used as a breeding area in addition to the container 10, so that the breeding volume of the breeding device 1 is from the lower surface of the container 10 to the upper end of the pumping pipe 20. High-density breeding is possible. The mesh 25 may be attached at any position on the inner surface of the pumping pipe 20 from the viewpoint of preventing the aquatic organism 2 from being dissipated. It is also possible to set the pumping pipe 20 in the middle or at the base in consideration of the characteristics, the conditions of the breeding water area, and the like.

When using the breeding device 1 configured as described above, air is introduced from the air pump 35 into the pumping pipe 20 with the container 10 containing the aquatic organism 2 and the pumping pipe 20 attached to the container 10 submerged in water. To supply. Hereinafter, three methods for changing the amount of pumped water will be described with reference to FIGS. 3 to 5. FIG. 3 shows an embodiment in which the amount of pumped water is adjusted by changing the amount of air supplied from the air pump 35. FIG. 4 shows an embodiment in which the amount of pumped water is adjusted by changing the total amount of air in the pumping pipe 20. FIG. 5 shows an embodiment in which the amount of pumped water is adjusted by changing the position of the upper end of the pumping pipe 20.

As shown in FIG. 3, the first method is to adjust the pumping amount by changing the amount of air sent into the pumping pipe 20. That is, the pumping capacity by the air lift action is made variable by changing the amount of air bubbles mixed in the water.

As a means for changing the amount of air supplied to the pumping pipe 20, for example, a valve 32 is provided in the air supply pipe 30 and the amount of air passing through the air supply pipe 30 is adjusted according to the amount of opening and closing of the valve 32. (See FIG. 3). When the air supply pipe 30 is provided with a valve 32 for adjusting the supply amount, it becomes easy to individually adjust the amount of pumped water in the plurality of breeding devices 1.

In addition, the output of the air pump 35 can be changed to adjust the amount of air supplied to the air supply pipe 30, and the adjustment by the valve 32 and the adjustment by the air pump 35 can be used at the same time. When the output of the air pump 35 is changed, it becomes easy to uniformly adjust the amount of pumped water in the plurality of breeding devices 1 installed, and it becomes easy to match the breeding conditions.

As shown in FIG. 4, the second method is to change the total amount of air mixed with water in the pumping pipe 20. That is, by changing the air supply position to the pumping pipe 20 without changing the amount of air supplied from the air pump 35, the length from the air supply unit to the upper end of the pumping pipe 20 (the length of air mixing) can be increased. The total amount of air remaining in the pumping pipe 20 is changed accordingly.

For example, a plurality of air outlets 21 of the pumping pipe 20 are provided along the extending direction of the pumping pipe 20, and the connection position of the air supply pipe 30 is changed to change the air supply position into the pumping pipe 20 to change the air. It is possible to adjust the total amount of. That is, when the air supply pipe 30 is connected to the air outlet 21 provided at the base of the pumping pipe 20, the total amount of air is maximized, and by connecting to the air outlet 21 on the tip side, the connected air outlet 21 and the air outlet 21 are connected. It is possible to reduce the total amount of air according to the distance to the upper end of the pumping pipe 20.

As described above, according to the first method and the second method, it is possible to change the pumped amount without changing the position of the container 10, that is, without changing the pumped water depth.

As shown in FIG. 5, the third method is to change the upper end position of the pumping pipe 20, that is, the position of the outlet of the ascending flow by upwelling, and change the pressure (water pressure and atmospheric pressure) applied to the outlet portion. be. That is, the maximum pumping amount is obtained when the upper end position of the pumping pipe 20 is 0 m below the water surface, and the pumping amount can be reduced by raising the pumping pipe 20 from the water surface. Further, the amount of pumped water can be reduced by submerging the upper end of the pumping pipe 20 below the water surface. In this way, the amount of pumped water can be adjusted by appropriately changing the position of the upper end of the pumping pipe 20 and applying water pressure or atmospheric pressure as resistance to the rising flow.

At this time, as shown in the upper figure of FIG. 5, the position of the upper end of the pumping pipe 20 is changed by moving the container 10 and the pumping pipe 20 up and down to freely adjust the amount of pumped water, and as shown in the lower figure of FIG. As described above, since the length of the pumping pipe 20 is variable, the pumping amount can be freely adjusted by changing the position of the upper end of the pumping pipe 20 without changing the installation water depth of the container 10. It is possible.

The first method, the second method, and the third method for changing the amount of pumped water shown in FIGS. 3 to 5 can be used in combination.

Next, the equipment for submerging the breeding apparatus 1 in water will be described with reference to FIGS. 6 and 7. FIG. 6 shows an example in which a single breeding device 1 is used, and shows an embodiment in which the container 10 and the pumping pipe 20 are moved up and down using the rope 40. FIG. 7 shows an example in which a plurality of breeding devices 1 are used.

As shown in FIG. 6, a stay 41 for fixing the rope 40 for raising and lowering is provided on the outer surface of the container 10, and a guide 42 for passing the rope 40 is provided on the upper part of the pumping pipe 20. .. The rope 40 is an example of means for raising and lowering the container 10 and the pumping pipe 20. The rope 40 is hung on a frame 46 provided on a floating body 45 installed on water, passed through a guide 42, and fixed to a stay 41. Two stays 41 are arranged symmetrically on the outer surface of the container 10. Similarly, two guides 42 are arranged symmetrically on the outer surface of the pumping pipe 20. In this way, the container 10 and the pumping pipe 20 are configured to be able to move up and down in a stable manner.

When the container 10 and the pumping pipe 20 of the breeding apparatus 1 are subsided, each of the installed ropes 40 is lowered and the container 10 is set to a desired water depth. That is, in the breeding device 1 of the present embodiment, the pumping water depth can be easily adjusted by the rope work of the rope 40. The rope 40 can be raised / lowered by hand, for example, or by using a winding / lowering device such as a winch.

The structure including the container 10 and the pumping pipe 20 that are submerged in water during use is set to be heavier than water. As a result, when submerging the container 10 and the pumping pipe 20, it is possible to use a hoisting / hanging means by a rope or the like, it is not necessary to use a separate descent means, and if there is a device for hanging on water, the installation location is limited. Is gone. Further, when installing the breeding device 1, no special device is required. For example, unlike the conventional FLUPSY, it is not necessary to provide the floating body with a frame for supporting the breeding container. From the above, it is possible to increase the degree of freedom of the installation location and contribute to the simplification and miniaturization of the equipment.

As shown in FIG. 7, when a plurality of breeding devices 1 are used, a floating body 45 and a frame 46 having a size corresponding to the number of breeding devices 1 to be used are prepared, and the rope 40 raises and lowers the same as when used alone. do. According to the breeding apparatus 1 of the present embodiment, even in the case of a plurality of uses, it is only necessary to prepare equipment for submerging the structures of the container 10 and the pumping pipe 20 in water, and the equipment can be miniaturized.

When a plurality of breeding devices 1 are installed, a plurality of structures having a configuration in which the air pump 35 is removed from the breeding device 1 are prepared, and one air pump 35 is distributed to each air supply pipe 30 to standardize the air pumps. It is also possible. At that time, the amount of pumped water of the individual breeding device 1 can be adjusted by providing the air supply amount adjusting valve in the distribution unit. Further, when all the breeding devices 1 are used under the same conditions (pumping water depth), it is possible to make the breeding conditions uniform by winding / winding each rope 40 with a common winch.

As shown in FIG. 8, it is also possible to use the breeding device 1 in the aquarium 50. The aquarium 50 is an isolated water area having a predetermined size, and contains plankton that feeds the aquatic organism 2 in the water. As shown in the lower figure of FIG. 8, even when the height of the water tank 50 is low, by suppressing the height of the main body 11 of the container 10, the length of the pumping pipe 20 is secured and a sufficient pumping amount is secured. , It is possible to make the best use of the breeding area.

1: Breeding equipment, 2: Aquatic organisms, 10: Container, 11: Main body, 12: Lid, 15: Mesh structure, 16: Reticulated part, 17: Fixed part, 20: Pumping pipe, 25: Mesh, 30: Air supply pipe , 32: Valve, 35: Air pump

Claims (10)

Cylindrical container and
A pumping pipe that is connected to the container, communicates with the inside of the container, and has a mesh on the inner surface.
The air supply pipe connected to the pumping pipe and
An air pump that supplies air to the inside of the pumping pipe is provided .
The air pump is a breeding device for aquatic organisms, which supplies air to the inside of the pumping pipe through the air supply pipe. The container is
A cylindrical body with open top and bottom, and
Including a lid that closes the upper surface of the main body and is detachably attached to the main body.
The aquatic organism breeding device according to claim 1, wherein the pumping pipe is connected to the lid. The aquatic organism breeding apparatus according to claim 1 or 2, wherein the structure including the container and the pumping pipe is set heavier than water and can be submerged by hanging. In addition to including a plurality of structures including the container, mesh structure, and pumping pipe,
The aquatic organism breeding device according to any one of claims 1 to 3, wherein air is supplied from a common air pump. Cylindrical container and
Connected to the container, and communicates with the interior of the container, a riser pipe having a mesh on the inner surface,
The air supply pipe connected to the pumping pipe and
A method for breeding aquatic organisms in which an aquatic organism is bred by a breeding device including an air pump that supplies air to the inside of the pumping pipe through the air supply pipe. The method for breeding aquatic organisms according to claim 5, wherein the inner surface of the pumping pipe is provided with a mesh having a mesh corresponding to the size of the aquatic organisms housed in the container. The container is
A cylindrical body with open top and bottom, and
Including a lid that closes the upper surface of the main body and is detachably attached to the main body.
The method for breeding aquatic organisms according to claim 5 or 6, wherein the pumping pipe is connected to the lid. A valve for adjusting the amount of air supplied is provided in the air supply pipe.
The method for breeding aquatic organisms according to any one of claims 5 to 7, wherein the amount of pumped water is variable depending on the amount of opening and closing of the valve. The method for breeding aquatic organisms according to any one of claims 5 to 8, wherein the structure including the container and the pumping pipe is set heavier than water and can be submerged by hanging. Including a plurality of structures including the container, mesh structure, pumping pipe, and air supply pipe,
The method for breeding aquatic organisms according to any one of claims 5 to 9, which distributes air supplied from an air pump common to each air supply pipe included in the structure.

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