JP5697543B2 - Aquatic breeding equipment and breeding containers - Google Patents

Description

  The present invention relates to an aquatic organism breeding apparatus and a breeding container, and in particular, oysters, clams, clams, red scallops, milk oysters, trigger oysters, uchimurasaki, honbinos, squirrel lizards (hereinafter referred to as clams, etc.), sea cucumbers and the like. The present invention relates to aquatic organism rearing devices and rearing containers.

  For example, as an intermediate breeding method for bivalves, an upwelling method has been put into practical use that can efficiently supply sea surface natural feed to a breeding container. The drainage channel is connected to the bottom of the container with a net attached to the bottom and fixed to the sea surface with water. The water flows into the drainage channel connected to the drainage channel by discharging water from the drainage channel using a pump provided in the drainage channel. (For example, refer to Patent Document 1). Therefore, the breeding container must be firmly attached to the drainage channel.

  In order to prevent clogging of the net stretched on the bottom of the rearing container, leading to a decrease in survival rate and low growth, it is necessary to clean the rearing container net as much as possible. It is desirable that it be detachably attached while maintaining its properties.

  However, since the sea area where the upwelling method is widely used overseas is a calm area, the method of fixing the breeding container and the drainage channel is rough. For example, a breeding container for use in a waved sea area like Japan. It is also conceivable to fasten and fix the bolt to the drainage channel with bolts.

  Moreover, as an apparatus for breeding aquatic organisms, a floating structure floating on the water is provided, and inside the floating structure, a cage containing portion opened on the upper surface and the lower surface is formed, and a net cage ( There is a structure in which the net cage is in a flooded state by detachably attaching the breeding container) to the cage storage unit. The structure for attaching the mesh basket to the basket housing part is provided with a hook on the upper part of the mesh basket, and the hook is attached to the support member provided with the basket housing part by its own weight, thereby attaching the mesh basket to the basket housing part. (For example, refer to Patent Document 2).

JP 2-24499 JP 2010-022231 A

  As described in Patent Document 2, when the hook provided on the upper part of the net cage is hooked on the support member provided with the cage accommodating portion by its own weight, it is difficult to fix the net cage. There is a risk that the net cage will be shaken by waves. Thus, there was a problem of stressing the aquaculture organisms due to the shaking caused by the wave of the net cage.

  Moreover, when fixing a breeding container to a drainage channel with a volt | bolt, the fixing operation | work with a volt | bolt may have to be performed by immersing a hand in seawater. Moreover, when the fixing | fixed part with a volt | bolt exists in the sea, adhering organism will adhere to this fixing | fixed part (screw part) carelessly. After the bivalve breeding period, etc., it is necessary to collect the breeding container, but if there are attached organisms attached to the screw part, there is a problem that it is difficult to operate the bolt and rotate it smoothly. .

  Therefore, the present invention aims to simplify the fixing operation of the breeding container, reduce the number of parts of the fixing means of the breeding container, improve the fixing reliability, and prevent the shaking of the breeding container due to waves. It is an object to provide a biological rearing device and a rearing container.

  The present invention has been made in order to solve the above-mentioned problems, and the feature of the aquatic organism breeding apparatus is that a breeding container containing aquatic organisms is detachably attached to a floating structure floating on the sea surface and provided with a water channel. The water channel and the breeding container are connected to each other through a communication path, and seawater flows into the breeding container from the bottom of the breeding container immersed in the seawater, and the seawater in the channel is drained by a pump. In the aquatic organism breeding apparatus in which the seawater in the breeding container is drained through the communication path and the water channel, the floating receiving structure is fitted with the latch receiving part from above. And the rearing container is provided with a tapered locking portion narrowing downward, and the locking receiving portion of the floating structure has a tapered surface that is in close contact with the locking portion. Formed before Rearing containers is that the locking portion is fixed by adhesion to the lock receiving portion.

  In this breeding device, the latch receiving part and the latching part are taper-fitted to the latch receiving part of the floating structure by a simple means of fitting the latching part of the breeding container from above. The breeding container can be securely fixed without being shifted laterally to the latch receiving part of the floating structure. For this reason, the shaking by the wave of the said breeding container can be prevented.

  In the breeding device, the latching portion of the breeding container is provided with an opening that communicates with the inside and outside of the breeding container, and the latch receiving portion is provided with an opening that communicates with the water channel. When fixed to a structure, it is preferable that the communication path is formed by matching the openings.

  In such a case, the water sealing property between the breeding container and the floating structure is improved, and the water channel and the breeding container can be communicated with each other with a simple configuration.

  In the breeding apparatus, the floating structure is provided with a container lid that can be freely opened and closed, and the container lid is provided with a pressing unit that fixes the breeding container to the floating structure by closing the container lid. That is. In such a case, since the container lid has a function of fixing means for the breeding container, a dedicated fixing means is not required, and the number of parts can be reduced.

A breeding container that can be used in the aquatic animal breeding apparatus , wherein the container body is provided with a tapered locking portion that narrows downward, and the locking portion includes an inner and outer container body. An opening that communicates with the container body, and a net attachment portion is provided in a radially outward direction from the container main body at the bottom of the container main body. A net guide is provided to prevent the net mount from catching on the floating structure, and the bottom net fixture that fixes the net to the net mount is not directly subjected to load when the container body is installed. The leg portion is provided below.

In the breeding container, it is preferable that the outer peripheral surface of the locking portion of the container body has a bulge outward.

  According to the present invention, the latch receiving portion and the latching portion are taper-fitted to the latch receiving portion of the floating structure by a simple means of fitting the latching portion of the breeding container from above. It is possible to simplify the fixing operation, reduce the number of parts of the fixing means of the breeding container, improve the certainty of fixing, and prevent shaking of the breeding container.

It is the sectional view on the AA line of FIG. 5 which showed the aquatic organism breeding apparatus which concerns on one Embodiment of this invention. It is the BB sectional view taken on the line of FIG. 5 which showed the breeding apparatus. It is a whole perspective view of the breeding device. It is a front view including a partial cross section of the breeding device. It is a top view of the breeding device. It is a side view including a partial cross section of the breeding device. The breeding container in the breeding apparatus is shown, (a) is a plan view and (b) is a front view. It is a perspective view which shows the breeding container in the breeding apparatus. The rearing container in the rearing apparatus is shown, (a) is a front view including a partial cross section with the rearing container attached, and (b) is a front view including a partial cross section with the rearing container being taken out. It is sectional drawing which shows the principal part of the breeding container in the breeding apparatus. (A) is a perspective view which shows a dummy container, (b) is a front view including the partial cross section which shows the use condition of a dummy container.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 11 show an embodiment of the present invention.

  First, the bivalve breeding device 1 used for bivalves as aquatic organisms will be described. As shown in FIGS. 1 to 6, the breeding device 1 includes a cage 2 as a floating structure floated on seawater, a breeding container 5 detachably attached to the cage 2, and seawater in the breeding container 5. It is a sea surface type breeding device mainly composed of a pump 6 as a drive device for distribution.

  The flange 2 is composed of a deck member 20 as an upper member made of a frame plate having a rectangular shape in plan view, and a lower member 30. The deck member 20 and the lower member 30 are each formed by FRP molding.

  The lower member 30 includes a float portion 31 provided substantially around the lower member 30 and a drainage channel (water channel) 32 provided at the center of the lower member 30. That is, the water channel 32 is provided to both ends along the longitudinal direction of the lower member 30. And the opening formed in the upper surface of the float part 31 is obstruct | occluded by the deck member 20 by adhere | attaching the deck member 20 and the lower member 30 integrally. Moreover, the pump 6 which discharges the seawater in the water channel 32 is provided at both ends of the water channel 32.

  The water channel 32 is formed in a substantially U-shaped cross section from a pair of vertical walls 32a and 32b and a bottom wall 32c connecting the lower ends of the vertical walls 32a and 32b. A placement portion 33 is provided on the upper side and on the inner surface of both vertical walls 32a and 32b, and a water channel lid 25 is detachably placed on the placement portion 33. 25, the upper surface opening of the water channel 32 is closed.

  A plate-like breeding container mounting member 40 is provided between both the float portions 31 and the water channel 32. That is, the breeding container mounting member 40 is horizontally fixed between the inner wall 31a of the float 31 and the vertical walls 32a and 32b outside the water channel 32 via the connecting member 34 having an L-shaped cross section. Further, the breeding container mounting member 40 is provided below the respective upper surfaces of the float part 31 and the water channel 32, and the breeding container storage part is formed by the float part 31, the water channel 32 and the breeding container mounting member 40. Yes.

  A plurality of attachment openings 41 are formed in the breeding container attachment member 40 so as to penetrate the breeding container attachment member 40 vertically.

  Each attachment opening 41 is formed in a substantially rectangular shape, and a cylindrical locking receiving portion 43 having a small diameter (small width) projects downward from the periphery of the opening of the breeding container attachment member 40. . The inner surface 43a of the latch receiving portion 43 is formed in a taper shape. Further, the inner surface 43a of the latch receiving portion 43 is a concave surface having a predetermined radius of curvature in plan view. In addition, a communication passage 45 is formed between the latch receiving portion 43 and the water channel 32 to communicate the inside of the latch receiving portion 43 and the water channel 32. That is, the communication path 45 is opened to the inner surfaces of the vertical walls 32 a and 32 b and the inner surface 43 a of the locking receiving portion 43.

  In this embodiment, the breeding container mounting member 40 is formed of a member different from the lower member 30, but the breeding container mounting member 40 can be integrally molded with the lower member 30.

  As shown in FIGS. 7, 8, and 10, the breeding container 5 includes a container body 50 that is detachably attached to the latch receiving portion 43 of the deck member 20, and a net tool 60. The container body 50 is formed of a cylindrical body having upper and lower ends opened, and a tapered locking portion 52 having a small diameter (narrow) downward is provided on the top of the container body 50.

  The container main body 50 is formed in a convex shape with a predetermined radius of curvature including the locking portion 52 (formed with the peripheral wall of the container main body 50 bulging outward). Specifically, the container body 50 has a shape corresponding to the locking receiving portion 43 formed on the deck member 20, and the locking portion 52 has the same radius of curvature as the locking receiving portion 43. It is curved and formed in a convex shape. Therefore, when the locking part 52 of the container main body 50 is fitted into the locking receiving part 43 from above, it comes into close contact with each other.

  An opening 53 that communicates with the inside and outside of the breeding container 5 is formed on one surface of the locking portion 52 (the surface on the water channel 32 side). The opening 53 coincides with an opening 43 b formed in the inner surface 43 a of the locking receiving portion 43. Furthermore, a trunk portion 56 having a small diameter downward from the locking portion 52 via the inclined annular portion 55 is provided. A net attaching portion 57 is formed radially outward from the lower end of the trunk portion 56, and a cylindrical leg portion 58 extends downward from the net attaching portion 57.

  The net tool 60 has a net frame 62 fixed around a net 61. The mesh frame 62 is housed in the leg portion 58 and is fixed to the mesh attachment portion 57 by a bolt 64 via a bottom mesh fixture 63. Note that the lower end of the leg portion 58 protrudes downward from the bottom mesh fixture 63. When the leg portion 58 is installed to stand the breeding container 5, the bottom mesh fixture 63 receives a direct load. There is no such thing. Further, on the peripheral surface of the container main body 50 from the upper end of the leg portion 58, when the breeding container 5 is pulled up, a triangular prevention for preventing the net attachment portion from being caught by the locking receiving portion 43 of the cage 2 is prevented. A plurality of guides 65 are provided radially.

  A container lid (hatch) 26 is connected to the deck member 20 via a hinge 23 so as to be openable and closable so as to close the breeding container storage portion. On the lower surface of the container lid 26, a pressing portion 27 for pressing the breeding container 5 from above when projecting is projected. The pressing portion 27 is for preventing the breeding container 5 attached to the breeding container attaching member 40 from floating upward when the container lid 26 is closed.

  The container lid 26 can be releasably maintained in a closed state by a lock member 28. The lock member 28 can be movably provided on the deck member 20 or can be detachably provided with a bolt.

  The breeding apparatus 1 according to the present embodiment has the above-described configuration. Next, a method for culturing bivalves 7 such as clams using the breeding apparatus 1 will be described.

  First, a clam seedling as a plurality of bivalves 7 is accommodated from an opening formed on the upper surface of the breeding container 5. Such clam seedling accommodation work is performed, for example, on land, on a ship laid on the breeding apparatus 1 or on the deck upper surface of the breeding apparatus 1. At this time, since the breeding container 5 has the leg portion 58, the clam seedling can be accommodated in a standing state.

  In addition, a granular culture substrate can also be accommodated in the breeding container 5 as needed.

  The raising container 5 is appropriately provided with lifting means 59 such as a rope or a hook, and the raising container 5 is lifted by the crane 10 provided on the cage 2 through the lifting means 59 (see FIG. 4). ). Then, the breeding container 5 lifted by the crane 10 is lowered at a predetermined position (above the locking receiving portion 43). Since the leg part 58 provided at the lower end of the trunk part 56 of the breeding container 5 has a smaller diameter than the opening at the lower end of the latch receiving part 43, the leg part 58 can easily pass through the latch receiving part 43. Further, the locking portion 52 of the breeding container 5 is fitted into the locking receiving portion 43 from above.

  The taper surface of the latching portion 52 of the breeding container 5 comes into close contact with the taper surface of the latch receiving portion 43 from above, so that the breeding container 5 is fitted without rattling. At this time, since the opening 53 formed in the locking part 52 of the breeding container 5 and the opening 43b formed in the latching receiving part 43 match, the inside of the breeding container 5 and the water channel 32 pass through the communication path 45. Communicate through.

  Further, the container lid 26 is closed, and the breeding container 5 is closed. Thus, by closing the container lid 26, the pressing portion 27 provided on the lower surface of the container lid 26 abuts on the upper peripheral surface of the breeding container 5 from above, so that the breeding container 5 is prevented from moving upward. To do. As a result, the breeding container 5 is fixed in a state where the vertical movement is restricted.

  The breeding container 5 attached to the breeding container attaching member 40 is in a flooded state, and the bivalve 7 accommodated in the breeding container 5 is disposed in the water. The surface of the seawater is located slightly above the breeding container mounting member 40.

  Next, when the pump 6 is operated, the pump 6 drains the seawater in the water channel 32. As a result, seawater flows into the breeding container 5 through the net 61 provided at the lower part of the breeding container 5. Then, the seawater in the breeding container 5 flows into the water channel 32 through the communication path 45 located at the upper part of the breeding container 5, and the seawater that flows into the water channel 32 is discharged to the sea surface outside the breeding device 1 by the pump 6. Is done. Thus, in order to forcibly generate the water flow through which the seawater flows to the bottom surface of the breeding container 5, the inside of the breeding container 5, the communication path 45, the water channel 32, and the sea surface, the supplement of the bivalve shell 7 is promoted by the water stream. Can be nurtured efficiently.

  Since the seawater in the water channel 32 is forcibly discharged by the pump 6, the water level in the water channel 32 and the breeding container 5 is lower than the sea level outside the breeding device 1 (see FIG. 1). At this time, since the water surface in the water channel 32 and the breeding container 5 tends to be constant with the sea level outside the breeding apparatus 1, buoyancy acts on the breeding container 5. Although the breeding container 5 tends to rise due to this buoyancy, the breeding container 5 is fixed to the container lid 26 from above, so that it does not float up, and the container lid 26 has a function of a fixing means (see FIG. 9 (a)).

  It is necessary to attach and detach the breeding container 5 frequently for the purpose of cleaning the breeding container 5, selecting aquatic organisms, and harvesting aquatic organisms. Therefore, a case where the breeding container 5 is attached and detached will be described.

  First, each container lid 26 is opened. Then, the pump 6 is operated with the container lid 26 opened. The breeding container 5 rises due to the upward flow generated under the breeding container 5 (see FIG. 9B). Further, the raised breeding container 5 is lifted by the crane 10. Since the breeding container 5 floats and is disengaged, it can be easily and quickly raised by the crane 10 and taken out.

  As described above, the breeding container 4 is only taper-fitted to the locking receiving portion 43 from above, so that it can be lifted and taken out by the crane 10 without operating the pump 6. As described above, it is preferable to raise the breeding container 5 by the upward flow by operating the pump 6.

  Even when the breeding container 5 is shifted in the horizontal direction when the breeding container 5 is lifted, the breeding container 5 is appropriately provided with a prevention guide 65. It will contact | abut to the lower end of. For this reason, the net attachment portion 57 below the breeding container 5 does not come into contact with the latch receiving portion 43, and the tip of the prevention guide 65 slides on the latch receiving portion 43, so that the breeding container 5 is pulled up smoothly. Can do.

  In the present embodiment, the wall of the breeding container 5 is bulged toward the outside. Therefore, the breeding area efficiency in the breeding container 5 is increased, and the breeding container 5 is difficult to be dented, so that the strength is increased. As described above, since the breeding container 5 has strength, when the breeding container 5 is fitted to the locking receiving portion 43, the breeding container 5 can be prevented from being laterally displaced and the breeding container 5 can be engaged. Good adhesion between the stopper 52 and the locking receiver 43 is maintained. The water sealability between the openings of the locking portion 52 and the locking receiving portion 43 is improved.

  Further, when the amount of the bivalve 7 is small, it is not necessary to use all the breeding containers 5. In such a case, a dummy container 12 as shown in FIG. 11 is employed. The dummy container 12 is formed of an annular body having a tapered portion 12a that is fitted to the latch receiving portion 43 from above. Then, by fitting the dummy container 12 to the latch receiving portion 43, the opening 43b of the latch portion 43 can be closed. In this manner, seawater can be prevented from flowing through the communication path 45 by closing the opening 43 b of the locking portion 43 with the dummy container 12. Therefore, since the amount of drainage can be reduced, the load on the pump 6 can be reduced. The dummy container 12 is fixed by the container lid 26 in the same manner as the breeding container 5.

  In the embodiment, since the pressing portion 27 for fixing the breeding container 5 is provided on the container lid 26, a dedicated fixing means for fixing the breeding container 5 is unnecessary, facilitating the fixing operation of the breeding container 5, and the number of parts. Can be reduced. The pressing unit 27 can be provided on the rearing container 5 side.

  Further, since the mesh tool 60 is fixed to the mesh attachment portion 57 protruding outward from the bottom surface of the container main body 50 by the bolt 64 through the bottom mesh fixture 63, the attachment portion such as the bolt 64 is rusted. Even so, it hardly enters the container body 50, and it is possible to prevent damage to the growth of aquatic organisms. Moreover, since the leg part 58 is provided in the bottom part of the container main body 50, the stability improvement at the time of grounding the breeding container 5 and a net part damage prevention can be aimed at.

  The present invention is not limited to the above embodiment. For example, the dummy container 12 is not necessarily provided. Instead of the dummy container 12, the breeding container 5 may be rotated 90 ° and attached to close the opening 43b. In such a case, the dummy container 12 becomes unnecessary.

  Moreover, the shape of the breeding container 5 is not limited to a rectangular shape, and may be an arbitrary polygon.

1 Breeding device 2 筏 (floating structure)
5 Breeding container 6 Pump 7 Bivalve 12 Dummy container 12a Tapered part 20 Deck member (upper member)
25 Water channel lid 26 Container lid 27 Pressing portion 30 Lower member 31 Float portion 32 Water channel 40 Breeding container mounting member 43 Locking receiving portion 43a Inner surface 43b Opening 45 Communication passage 50 Container body 52 Locking portion 53 Opening 56 Trunk portion 58 Leg portion 60 Net tool 61 Net 62 Net frame 63 Bottom net fixing tool 65 Prevention guide

Claims (5)

A floating container that contains aquatic organisms is detachably attached to a floating structure that floats on the sea surface and has a water channel. The water channel and the breeding container communicate with each other through a communication path and are submerged in the sea water. Seawater flows into the breeding container from the bottom of the breeding container, and the seawater in the channel is drained by a pump, so that the seawater in the breeding container is bred through the communication path and the channel. In the device
The floating structure is provided with a latch receiving portion into which the breeding container is fitted from above, and the breeding container is provided with a tapered latch portion that becomes narrower downward, The locking receiving portion of the floating structure is formed with a tapered surface to which the locking portion is in close contact, and the breeding container is fixed by the locking portion being in close contact with the locking receiving portion. Aquatic animal breeding equipment.   2. The aquatic organism rearing apparatus according to claim 1, wherein an opening communicating with the inside and outside of the breeding container is provided in the latching portion of the breeding container, and an opening conducting to the water channel is provided in the latch receiving portion. The aquatic organism rearing apparatus is characterized in that when the rearing container is fixed to a floating structure, the opening is matched to form the communication path.   The aquatic organism breeding apparatus according to claim 1 or 2, wherein a container lid is provided in the floating structure so as to be freely opened and closed, and the container lid is closed by closing the container lid. An aquatic animal breeding apparatus, characterized in that a pressing part for fixing to a floating structure is provided. It is a breeding container which can be used for the aquatic organism breeding device according to any one of claims 1 to 3, wherein the container body is provided with a tapered locking portion which becomes narrower downward. The locking portion is provided with an opening communicating with the inside and outside of the container body, and the bottom of the container body is provided with a net attachment portion radially outward from the container body. On the outside of the container, there is provided a prevention guide for preventing the mesh attachment portion from being caught by the floating structure when the container body is pulled up, and fixing the mesh to the mesh attachment portion when the container body is installed. A breeding container, wherein the legs are provided below the net attachment portion so that the tool is not directly loaded. 5. The breeding container according to claim 4, wherein the outer peripheral surface of the locking portion in the container body has an outward bulge.

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