JP7217787B2 - aquatic breeding equipment - Google Patents

Description

TECHNICAL FIELD The present invention relates to a technique for efficiently rearing bivalves such as oysters, short-necked clams, clams, red clams, milk oysters, long-tailed clams, purple mussels, hard snails, and lizards, and aquatic organisms such as sea cucumbers.

Conventionally, as a method for growing juvenile bivalves, juvenile clams are housed in a cylindrical breeding container with a mesh bottom surface, and an upward flow is generated in the container using a submersible pump or an air pump as a pumping drive unit. Therefore, an upwelling system that efficiently feeds natural feed contained in water is widely known (for example, Patent Document 1, etc.).

An opening facing the water channel is provided at the top of the breeding container using a facility that includes a channel for discharge and a frame that holds a plurality of breeding containers. is known as FLUPSY. In addition, by installing a curved pumping pipe in the rearing container and ventilating from the middle part of the pipe with an air pump, the method of generating an upward flow by using the air lift function of the ejected bubbles is known as the air lift method. It is

JP 2012-244960 A

As in the technique described in Patent Document 1, in the method of pumping up water using a common submersible pump for a plurality of breeding containers installed in a water channel, there are problems that the equipment itself becomes large and pumping water for each breeding container. There is a problem that it is difficult to control the amount. In addition, since the pump, which is the driving part for pumping water, is submerged in water, there is a problem that biofouling adheres to it and needs to be removed.

In the conventional airlift method, since the pumping pipe is arranged inside the rearing container, there is a problem that the length of the pumping pipe is limited, and it is difficult to secure a sufficient amount of pumping water. A problem common to both the method using a submersible pump and the airlift method is that it is difficult to freely set the water depth at which the rearing container is installed.

In view of the above, it is an object of the present invention to provide a technology capable of freely changing the pumping water depth while securing a sufficient amount of pumping water in an aquatic organism rearing apparatus that employs an airlift type upwelling. and

A breeding apparatus for aquatic organisms according to one aspect of the present invention includes a container, a pumping pipe connected to the container, an air pipe connected to the pumping pipe, and air being introduced into the pumping pipe through the air pipe. and an air pump for supplying air, wherein the air pump can adjust the amount of air supplied to the air pipe by changing the output.

According to another aspect of the present invention, there is provided a breeding apparatus for aquatic organisms comprising: a container; a pumping pipe connected to the container; an air pipe connected to the pumping pipe; and an air pump that supplies the water, and the water lifting pipe has a plurality of connection portions to which the air supply pipe can be connected in the extending direction of the water lifting pipe.

According to still another aspect of the present invention, there is provided a breeding apparatus for aquatic organisms, comprising: a container; a water lifting pipe connected to the container and having an adjustable length; an air pipe connected to the water lifting pipe; and an air pump that supplies air to the inside of the pumping pipe.

The pumping pipe preferably has a mesh on its inner surface.

The container includes a cylindrical main body whose upper and lower surfaces are open, 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. preferably

It is desirable that the structure including the container and the pumping pipe is set heavier than water and can be submerged in water by hanging.

It is preferable that the breeding apparatus includes a plurality of structures including the container, the mesh structure, and the pumping pipe, and the structures are supplied with air from a common air pump.

According to the present invention, it is possible to provide a technology capable of freely changing the pumped water depth while ensuring a sufficient amount of pumped water in an aquatic organism rearing apparatus that employs an airlift type upwelling.

The figure which shows a breeding apparatus. Sectional drawing of a breeding apparatus. The figure which shows the 1st 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 a breeding apparatus. The figure which shows an example which uses several breeding apparatuses. The figure which shows an example which uses a breeding apparatus within a water tank.

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

The breeding device 1 is a device for breeding aquatic organisms 2 . The aquatic organisms 2 are juvenile bivalves such as oysters, short-necked clams, clams, red clams, milk oysters, long-spined clams, purple mussels, hard clams, and lizards, larvae of sea cucumbers, etc., which are reared intermediately in the breeding apparatus 1. is. The breeding apparatus 1 causes upwelling by an airlift method, and feeds feed contained in water to aquatic organisms 2 accommodated in the apparatus.

The breeding apparatus 1 includes a cylindrical container 10 with an open bottom surface, a mesh structure 15 attached to the bottom surface of the container 10, and a pumping pipe 20 connected to the upper outer surface 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 pipe 30 connected to the base of the pumping pipe 20 , and an air pump 35 that supplies air to the inside of the pumping pipe 20 through the air pipe 30 .

The container 10 includes a tubular 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 periphery of the lower surface of the main body 11 , and a 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 cylindrical shape extending in the vertical direction, and may be cylindrical or prismatic. An aquatic organism 2 is housed inside the container 10 .

The mesh structure 15 includes a mesh portion 16 having meshes corresponding to the size of the aquatic organisms 2 (that is, meshes fine enough to prevent the aquatic organisms 2 from falling), and a mesh portion 16 for fixing the mesh portion 16 to the flange 13 of the main body 11. and a fixed 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 when 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 the mesh portion 16 of the mesh according to the size of the aquatic organism 2, it is possible to easily cope with the case of changing the aquatic organism 2 to be reared.

The pumping pipe 20 is a cylindrical member with open upper and lower surfaces, 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 forming 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 . A jet port 31 for jetting air is provided at the tip of the air pipe 30 . Thus, by providing the air outlet 21, which serves as an air blowing portion, at the lower portion of the water lifting pipe 20, the air lift effect can be increased, and the handling of the air pipe 30 is facilitated.

In this embodiment, two air outlets 21 are provided in the lower part of the lifting pipe 20, and the air pipe 30 is connected to each of them. 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 in the middle, etc., and the position can be set at an arbitrary position according to the required air lift capability.

In the present embodiment, the lid 12 of the container 10 is provided with the pumping pipe 20 so that the pumping pipe 20 is connected to the upper surface of the container 10. However, if the pumping pipe 20 is arranged outside the container 10, Alternatively, a pumping pipe 20 may be connected to the upper outer surface of the container 10 . Furthermore, the pumping pipe 20 may be connected to two points on the upper side surface of the container 10 .

As described above, the pumping pipe 20 of the present embodiment is provided outside the container 10 instead of being extended inside the container 10 . As a result, it is possible to use the entire area in the container 10 as a breeding area, enabling high-density and efficient breeding. In addition, since there is no limitation when arranging the pumping pipe 20 inside the container 10, the length of the pumping pipe 20 can be freely changed to freely adjust the water depth of the container 10. Furthermore, by adjusting the water depth of the container 10 and freely changing the pumped water depth, it is also possible to avoid the distribution depth of the larvae of attached organisms.

In addition, since the breeding apparatus 1 of the present embodiment has a configuration in which the depth of pumped water can be freely changed, it is possible to reduce the interference of waves by increasing the depth of water. In other words, it can be used not only in quiet areas such as aquaculture ponds, but also in water areas affected by waves, and can be used in water areas suitable for the growing conditions of the aquatic organisms 2 to be reared. be.

Furthermore, in this embodiment, the container 10 is composed of the main body 11 and the lid 12 , and the lift 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, it is possible to easily access the inside of the main body 11 that houses the aquatic organisms 2, and it is possible to easily perform maintenance such as taking in and out the aquatic organisms 2 and cleaning the inside.

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 and 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 keeping it away from the main body 11 having a large size. Further, when the pumping pipe 20 is configured as a cylinder extending linearly upward from the container 10, maintenance such as cleaning of the inner surface of the pumping pipe 20 can be easily performed even in the state of being attached to the lid 12. It is possible.

Air is supplied from the air pump 35 through the air pipe 30 , and air bubbles are jetted into the discharge pipe 20 from the jet port 31 . The ejected air bubbles rise inside the pumping pipe 20 , thereby pumping up the water inside the pipe and generating an upward flow inside 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 pump 35 serving as the pumping drive unit ejects air bubbles to the lower part of the pumping pipe 20, so that the container 10 is lifted up. It adopts an air lift method that causes

The air pipe 30 is a long flexible pipe such as an air hose. An air pump 35 connected to the air pipe 30 is arranged at a predetermined position on land (or on a floating body) in a favorable installation environment. For example, while submerging the container 10 to which the pumping pipe 20 is attached, the air pipe 30 is extended to install the air pump 35 in a building on land or on a floating body. In this way, by making the air pump 35 non-contact in water, corrosion of the air pump 35 can be prevented, and maintenance of the air pump 35 can be improved.

A mesh 25 is attached to the upper end of the pumping pipe 20 . The mesh 25 is a net-like member having meshes corresponding to the size of the aquatic organism 2 . Thus, in the rearing apparatus 1, the mesh structure 15 provided on the lower surface of the container 10 and the mesh 25 provided on the pumping pipe 20 form an isolated space inside, so that the accommodated aquatic organisms 2 are It is devised so as not to dissipate to the outside. In addition, 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 the breeding volume of the breeding apparatus 1 is from the bottom surface of the container 10 to the upper end of the pumping pipe 20. High density breeding is possible. From the viewpoint of preventing the aquatic organisms 2 from dissipating, the mesh 25 may be attached at any position on the inner surface of the pumping pipe 20. It is also possible to set it in the middle or at the base of the pumping pipe 20, taking into account the characteristics, the conditions of the breeding water area, and the like.

When the breeding apparatus 1 configured as described above is used, the container 10 containing the aquatic organisms 2 and the pumping pipe 20 attached to the container 10 are submerged in water, and air is supplied from the air pump 35 into the pumping pipe 20. supply. Three techniques for changing the pumping amount will be described below with reference to FIGS. 3 to 5. FIG. 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 tube 20 . FIG. 5 shows an embodiment in which the pumping amount 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 amount of pumped water by changing the amount of air sent into the pumping pipe 20 . In other words, by changing the amount of air bubbles mixed in the water, the pumping capacity by the airlift action can be varied.

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

In addition, it is also possible to adjust the amount of air supplied to the air pipe 30 by changing the output of the air pump 35, or to use the adjustment by the valve 32 and the adjustment by the air pump 35 together. When the output of the air pump 35 is changed, it becomes easy to uniformly adjust the amount of pumped water in a plurality of installed breeding apparatuses 1 as a whole, and it becomes easy to match the breeding conditions.

As shown in FIG. 4, the second technique is to change the total amount of air mixed with the water in the pumping pipe 20 . In other words, by changing the position of the air supply to the pumping pipe 20 without changing the amount of air supplied from the air pump 35, the length from the air supply part to the upper end of the pumping pipe 20 (the length of air mixing) Accordingly, the total amount of air remaining in the pumping pipe 20 is changed.

For example, by providing a plurality of air outlets 21 of the pumping pipe 20 along the extension direction of the pumping pipe 20 and changing the connection position of the air pipe 30, the air supply position into the pumping pipe 20 can be changed. and adjusting 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 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 pumping amount without changing the position of the container 10, that is, without changing the pumping water depth.

As shown in FIG. 5, the third method is to change the position of the upper end of the pumping pipe 20, that is, the position of the outlet of the ascending flow due to upwelling, and change the pressure (water pressure and atmospheric pressure) applied to the outlet. be. That is, when the upper end position of the pumping pipe 20 is 0 m below the water surface, the pumping amount becomes maximum, and the pumping amount can be reduced by raising the pumping pipe 20 from the water surface. Also, by submerging the upper end of the pumping pipe 20 under the surface of the water, the pumping amount can be reduced. In this manner, 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 upward flow.

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

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

Next, facilities for submerging the breeding apparatus 1 in water will be described with reference to FIGS. 6 and 7. FIG. FIG. 6 shows an example of using a single breeding apparatus 1, and shows an embodiment in which a rope 40 is used to raise and lower the container 10 and the pumping pipe 20. As shown in FIG. FIG. 7 shows an example of using a plurality of breeding apparatuses 1. FIG.

As shown in FIG. 6, a stay 41 for fixing a rope 40 for lifting 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 water lifting pipe 20 . The rope 40 is hung on a frame 46 provided on a floating body 45 installed on the water, passed through a guide 42 and fixed to a stay 41 . Two stays 41 are arranged at symmetrical positions on the outer surface of the container 10 . Similarly, two guides 42 are arranged at symmetrical positions on the outer surface of the pumping pipe 20 . In this manner, the container 10 and the pumping pipe 20 are configured to be able to move up and down stably.

When submerging the container 10 and the pumping pipe 20 of the breeding apparatus 1, the installed ropes 40 are lowered and the container 10 is set to a desired water depth. In other words, in the breeding apparatus 1 of the present embodiment, the rope work of the rope 40 can easily adjust the pumped water depth. It should be noted that the rope 40 can be raised/lowered manually or by using a hoisting/lowering device such as a winch.

The structure including the container 10 and the pumping pipe 20 which is submerged in water during use is set to be heavier than the water. As a result, when the vessel 10 and the water pumping pipe 20 are submerged, it is possible to use lifting/suspending means such as a rope, and there is no need to use a separate lowering means, and if there is a device for hanging above the water, the installation location is limited. disappears. In addition, when installing the breeding apparatus 1, no special device is required. For example, unlike the conventional FLUPSY, there is no need to provide the floating body with a frame for supporting the rearing container. As described above, the degree of freedom of the installation location is increased, and the equipment can be simplified and miniaturized.

As shown in FIG. 7, when a plurality of rearing apparatuses 1 are used, floating bodies 45 and frames 46 having sizes corresponding to the number of rearing apparatuses 1 to be used are prepared and lifted and lowered by ropes 40 in the same manner as in single use. do. According to the breeding apparatus 1 of the present embodiment, even when a plurality of structures are used, it is sufficient to prepare a facility for submerging the structure of the container 10 and the pumping pipe 20 respectively, and the miniaturization of the facility can be realized.

When a plurality of rearing apparatuses 1 are installed, a plurality of structural bodies having a configuration in which the air pump 35 is removed from the rearing apparatus 1 are prepared, and one air pump 35 is distributed to each of the air pipes 30 to share the air pump. is also possible. In this case, by providing an air supply amount control valve in the distribution unit, the pumping amount of the individual breeding apparatus 1 can be adjusted. Further, when all the breeding apparatuses 1 are used under the same conditions (pumping water depth), it is possible to uniform the breeding conditions by winding up/lowering each rope 40 with a common winch.

As shown in FIG. 8, the breeding apparatus 1 can also be used in an aquarium 50. FIG. The water tank 50 is an isolated water area having a predetermined size, and contains plankton that serves as food for the aquatic organisms 2 in the water. As shown in the lower diagram of FIG. 8 , even when the height of the water tank 50 is low, the height of the main body 11 of the container 10 is suppressed, thereby securing the length of the pumping pipe 20 and securing a sufficient amount of pumping water. , it is possible to make the most of its breeding area.

1: breeding apparatus, 2: aquatic organisms, 10: container, 11: main body, 12: lid, 15: mesh structure, 16: net-like part, 17: fixed part, 20: pumping pipe, 25: mesh, 30: air pipe , 32: valve, 35: air pump

Claims (7)

a container;
a pumping pipe connected to the container to communicate with the inside of the container and pump up water in the container;
an air pipe connected to the pumping pipe;
an air pump that supplies air to the inside of the water pumping pipe through the air pipe,
An apparatus for rearing aquatic organisms, wherein the air pump can adjust the amount of air supplied to the air pipe by changing the output. a container;
a pumping pipe connected to the container to communicate with the inside of the container and pump up water in the container;
an air pipe connected to the pumping pipe;
an air pump that supplies air to the inside of the water pumping pipe through the air pipe,
An apparatus for breeding aquatic organisms, wherein the pumping pipe has a plurality of connecting portions to which the air pipe can be connected in a direction in which the pumping pipe extends. a container;
a length-adjustable pumping pipe connected to the container to communicate with the interior of the container and pump up water in the container ;
an air pipe connected to the pumping pipe;
and an air pump that supplies air to the inside of the water pumping pipe through the air pipe. 4. A breeding apparatus for aquatic organisms according to any one of claims 1 to 3, wherein said pumping pipe has a mesh on its inner surface. The container is
a cylindrical main body with open upper and lower surfaces;
a lid that closes the upper surface of the main body and is detachably attached to the main body,
5. A breeding apparatus for aquatic organisms according to any one of claims 1 to 4, wherein said pumping pipe is connected to said lid. 6. The breeding apparatus for aquatic organisms according to any one of claims 1 to 5, wherein the structure including the container and the pumping pipe is set to be heavier than water and can be submerged in water by being suspended. Including a plurality of structures including the container, the mesh structure, and the pumping pipe,
7. The breeding apparatus for aquatic organisms according to any one of claims 1 to 6, wherein air is supplied to said structures from a common air pump.

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