JPS5981294A - Live well structure - Google Patents

Abstract

PURPOSE:To enable the sufficient amount of water to be obtained within a live well even if the draft is low by installing an inner cage on the inside of a crawl body provided with a water sucking scupper and a drainage scupper, and providing on the peripheral wall of said cage a rectifying hole for allowing water to circulate up to a position higher than the draft level of a vessel. CONSTITUTION:An inner cage 12 is housed in a live well body 11 partitioned by a water absorption scrupper 5, a drainage scrupper 6, and a partition 3 on a vessel bottom part 1a. A rectifying hole 15 for allowing water to circulate up to a higher position than the draft level of a vessel is provided on the peripheral wall of the inner cage 12. Further, a drain cock 18 is provided on the bottom. An auxiliary pipe 7 is attached to the drainage scupper 6, so that it is possible to assure a water level up to the height of this pipe in the inner cage even if the draft is low, along with the possibility of the assurance of the sufficient amount of water in the live well.

Description

[Detailed description of the invention] The present invention relates to fish pen structures for fishing boats and the like.

As a conventional fish pen structure of this kind, one formed approximately in the center of a fishing boat is known, for example, as shown in FIGS. 1 and 2. Specifically, in the figure, reference numeral 1 is the hull, 2 is the deck, and there is a bulkhead 3 between the bottom la of the hull 1 and the deck 2.
is interposed in a watertight manner surrounding all sides, and the deck 2 is raised upward at this part to form the fish cage opening 4, and water absorption and drainage scuppers 5 and 6 are provided for refluxing the water in the fish cage. is formed on the ship's bottom 1a, and a breather pipe 7 is detachably attached to this drainage scupper 6. The opening surface at the lower end of the water absorption scupper 5 is inclined toward the bow direction, and water is sucked in from this water absorption scupper 5 while the fishing boat is sailing, and when the water level rises to the upper end of the blizzard pipe 7, the opening surface is tilted toward the stern. Water is discharged from the drain scupper 6 which is inclined in the direction, and the water in the cage is refluxed and replaced with fresh water. On the other hand, when the fishing boat was stopped, the water in the fish cage had escaped from the water absorption scupper 5 and had fallen to the same water level as the fishing boat's water line.

However, in such a conventional cage structure,
A problem with low-draft fishing boats is that the volume of water in the cage becomes shallow when the boat is at rest, making it difficult to use the cage as it cannot secure sufficient capacity.

This invention was made in view of the conventional situation,
To provide a fish cage structure in which the water level is above the water line even when the boat is stopped, in order to prevent even a fishing boat with a low draft from becoming difficult to use as a fish cage when the boat is stopped.

Therefore, in the fish cage structure tX according to the present invention, an inner cage for keeping fish and shellfish is housed in the fish cage body in which a water absorption scupper and a drainage scupper are formed in the fish cage body, and the peripheral wall of the inner cage is located above the water line of the fishing boat. A rectifying hole was formed at a high position to circulate the water in the inner gauge. As a result, the water level in the inner cage does not fall below the rectifying hole located above the waterline, and is set by the position of this rectifying hole, so the water level when the ship is stopped can be higher than before, and the water level in the inner cage with deep water Seafood will be kept in the cage.

The present invention will now be described based on each embodiment.

In this description, parts or members that are the same as or equivalent to those in the prior art are given the same reference numerals and redundant description will be omitted.

3 to 7 (a), (b), and (c) are diagrams showing a first embodiment of the present invention.

First, to explain the configuration, as in the conventional case ((), a partition wall 3 is interposed between the bottom 1a and the deck 2 to form the fish cage main body 11, and both scuppers 5, 6 are attached to the bottom 1a of the fish cage main body 11.
are spaced apart in the direction of success.

An inner cage 12 for keeping fish and shellfish is removably housed within this fish cage main body 11. This inner cage 12 has a flange portion 13 formed at its upper end that comes into contact with the upper side of the fish cage opening peripheral portion 11a of the fish cage main body 11, and four handles 14 are attached near the lower side of this flange portion 13. A plurality of rectifying holes 15 on the lower peripheral wall of 14
is bored, and its diameter decreases as it goes downward, so that the bottom part 16 is in contact with the bottom 1a between the two scuppers 5 and 6. The rectifying hole 15 is for circulating the water inside the inner cane 12, and is bored in the surrounding wall other than the wall 17 near the water absorption scupper 5 at a position higher than the water line of the fishing boat. It is located at approximately the same height as the top of the . Furthermore, a drain cock 18 is removably screwed into the bottom portion 16 of the inner cage 12, as shown in FIG. In addition, the code|symbol 19 in the figure is a fish cage hatch.

Next, the operation of the cage structure having such a configuration will be explained with reference to FIG. 4 and FIGS. 7(a), (b), and (C).

First, attach the preserve nozzle (Eve 7) to the drain scupper 6, and then place the inner cage 12 into the fish tank main body 11 with the drain cock 18 removed.In this state, inside the fish cage main body 11 and inside the inner cane 12, Water enters to the same height as the water line, and then closes the drain cock 18. Then, when sailing begins, water enters from the water absorption scupper 5, and when water accumulates to the upper end of the breather pipe 7,
Water enters into the inner cane 12 through the rectifying hole 15, and water is discharged from the drainage scupper 6 through the breather pipe 7, and flows into the fish cage body 11 and into the inner cane 1.
The water level inside the pipe 2 is maintained at the height of the breather pipe 7 (see FIG. 7(a)). Note that a high-speed fishing boat that glides has a shallow draft because it glides, but the water level up to the height of the preserve pipe 7 can be secured.

After that, when the boat stops for fishing etc., water drains from the water suction pipe 5 and the water level inside the fish cage main body 11 outside the inner cane 12 becomes the same as the water line. Because it is built at a high location, the water level is maintained above the waterline. As a result, even if the fishing boat has a low waterline, the inner cage will have enough water volume to keep the fish, etc. caught (see FIG. 7(b)).

After that, when the ship starts sailing again with the seafood still in the inner cane 12, water flows in from the water absorption scupper 5 as described above, the water level rises, and flows into the inner cane 12 through the rectifying hole 15. Water enters and returns, replacing it with fresh water, extending the lifespan of seafood. At this time, the pressure of the water entering from the water absorbing scooper 5 increases as the boat speeds up, and in the past, the flow of water in the cage became turbulent, causing the fish to weaken. However, in the embodiment of the present invention, the water that enters with force from the pan water absorption scupper 5, in which the rectification hole 15 is not formed in the wall 17 near the water absorption scupper 5, enters the inner cane 12 with that force. The water turns sideways and enters through the rectifying hole 15, its force is weakened, and a rectifying effect is obtained, so that it does not cause turbulence in the inner cane 12 and weaken the fish. (See Figure 4).

When returning to port and unloading seafood, conventionally the fish and shellfish have been scooped up many times using a net, but in the embodiment of the present invention, the drain cock 18 is first removed and the inner cage 12 is lifted using the gunner 14. , the water in this cane 12 is drained, and the loading work is carried out all at once.

Further, FIG. 8 shows a second embodiment of the present invention.

In this embodiment, a rectifying hole hood oriented in a fixed direction is formed on the outside of the rectifying hole 5 of the inner cage 12, so that water entering from the water absorption scupper 5 is directed in a fixed direction due to the rectifying hole hood. Flows into the inner gain 12,
The water flow rotates, turbulence is less likely to occur than in the first embodiment, and the inside of the inner cane 12 is in a better condition for fish. In general, fish live in oceans with currents or rivers with currents, and are strong against currents in a certain direction, but weak against turbulence. conditions are good for fish. The other configurations and operations are the same as those in the first embodiment, so their explanation will be omitted.

In addition, since the inner cage 12 of both of the above-mentioned embodiments has a circular shape from the substantially central portion downward, the fish can move easily and it is more effective to keep the fish alive.

Furthermore, as shown in FIGS. 9 and 10, in place of the drain cock 18, a plurality of holes n are formed in the bottom part 16 of the inner cage 12, and a plate device for opening and closing the holes n is provided below the holes n. When provided rotatably, when the inner cage 12 is housed in the fish cage main body 11, the plate portion comes into contact with the bottom 1a and rotates to close the holes and maintain a watertight state (Fig. 9). reference). Also, when loading a load, the plate row rotates due to the weight of water and holes n are opened.
There is no need to remove the drain cock 18 as in the above embodiment,
Water drains from the holes n, making loading operations easier.

As described above, according to the present invention, it is possible to provide a fish pen structure with sufficient water volume to keep fish etc. even for a fishing boat with a low draft.

Further, when the flow regulating holes are formed in a peripheral wall other than the wall near the water absorbing scupper, turbulent flow within the inner cage can be prevented, thereby preventing weakening of the fish.

Furthermore, if the inner cage is removably housed in the cage main body, it is possible to carry out loading operations at one time without using a net or the like.

[Brief explanation of drawings]

Figures 1 and 2 are views showing a fishing boat with a conventional fish pen structure, where Figure 1 is a side view of the fishing boat, Figure 2 is a plan view of the fishing boat, and Figures 3 to 7 (a). , (b), (e)
1 is a diagram showing the cage structure of the first embodiment of the present invention, FIG. 3 is a longitudinal sectional view showing the same cage structure, and FIG.
5 is a perspective view showing a part of the bottom of the ship and the inner gauge; FIG. 6 is a sectional view taken along line V+-■ in FIG. 5; FIGS. 7(a) and (b). (C) is a schematic explanatory diagram of a fishing boat showing the effect of the first embodiment;
FIG. 7(a) shows the state when the ship is sailing, FIG. 7(b) shows the state when the ship is stopped, FIG. 7(C) shows the state when loading cargo, and FIG. 8 shows the fish pen structure according to the second embodiment of the present invention. A sectional view similar to FIG. 4 shown in FIG.
The figure is a longitudinal sectional view showing a modified example of the inner cage, and FIG. 10 is a longitudinal sectional view showing the action of the inner cage during loading. DESCRIPTION OF SYMBOLS 1...Hull, 1a...Bottom, 5...Water absorption scupper-16...Drainage scupper-111...Fish tank body, 1
2... Inner gauge, 15... Rectifier hole, 17...
・Nearby walls Figure 1 Figure 3 Figure 4

Claims (2)

[Claims] (1) An inner cage is installed inside the main body of the fish tank, which is equipped with a water absorption scooper and a drainage scooper, and a rectification hole is formed in the peripheral wall of the inner cage to return water to a position higher than the waterline of the ship. Fish cage structure. (2) The fish pen structure according to claim 1, wherein the rectifying hole is formed in a peripheral wall other than the wall near the water absorbing cupper.