JP2011142878A - Submersible system for fishery - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To stably float and sink a large-sized fishery net such as a bag net for crawl and set net, and a size-screening net for fish by using a simple construction. <P>SOLUTION: There is provided a submersible hose for floating and sinking a net for fishery comprising a flexible hose obtained by weaving a tube with a fiber and lining the inside or inside and outside of the tube with a rubber or a resin to prevent air leakage, a feeding and exhausting port for high-pressure air attached to the hose in a manner communicating to the inner space of the hose, and an air feeding and exhausting means connected to the feeding and exhausting port. The hose is collapsed to a flat form in a state free from air in the inner space and is inflated to a circular cylindrical form in a state containing air filled in the inner space. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a fishery floating and sinking system, in which a floating hose is disposed in a large fishing net such as a fish farming ginger and a stationary net box net, and high pressure air is supplied to the floating hose. The present invention also relates to a device that performs the floating and sinking of a fishing net through exhaust.

[A] Floating and sinking fish for fish farming Floating and sinking ginger is widely used in areas where sea conditions are rough as a method for culturing fish. The main target fish are yellowtail, amberjack, and Thailand. The floating ginger used is roughly classified into the following (1) to (3).

(1) Float ginger (Figure 1)
A float-type ginger is generally rectangular and the frame is made of a steel pipe, and a ginger net is attached to the frame. A plurality of floats are attached to cancel the weight of the frame and net. The raising and lowering of the ginger is performed by a float for floatation with an air inlet and exhaust at the top and a seawater inlet and drain at the bottom. The rise of the ginger is caused by injecting high-pressure air into the float to discharge the seawater from the float and thereby raise the ginger, and the sinking is caused by discharging the air from the float and injecting seawater into the float. A plurality of floats are attached according to the size of the ginger.
In the float type ginger, the attachment position of the float / float float is the point of action of the ginger float. Floating and floating floats are basically symmetric in a rectangular frame, with one on each side for a total of four and one for each side for a total of eight. In some cases, there is a total of 2 pieces per side, and a total of 4 pieces per side. In addition, the seawater injection and discharge heads at the bottom of the float will change depending on the inclination of the ginger coming from the tide flow.
When a float is attached to a ginger frame, if the float is very difficult to position and is not symmetrical, the action point of the floating body will shift, and the ginger may not be able to float and sink stably. Also, because the ginger is tilted by the flow of the tide, the bottom injection and the drainage head are different, and it may be difficult to stabilize the shape of the ginger when it rises and falls. Further, when the number of floats is increased, the points of action increase and the adjustment thereof becomes very complicated. Further, since the heads of the water injection port and the water discharge port are different from each other, it becomes difficult to achieve stability when the ginger is raised and lowered. For this reason, it is difficult to apply to large ginger. Currently, it is the largest ginger and the length of one side is about 25m. There is no further adoption for ginger.

(2) Spar type ginger (Figure 2)
The shape of the ginger is like a abacus ball, with a steel pipe at the center of the ginger and a rim at the center of the ginger, which is supported by spoke lines from above and below the steel pipe. The ginger net is stretched inside the spoke line. The steel pipe has a structure in which an air inlet and exhaust port are provided at the top, and a seawater inlet and drain port are provided at the bottom. The rise of the ginger discharges seawater from the steel pipe by injecting high-pressure air into the steel pipe, and the sinking sinks the ginger by exhausting the air from the steel pipe and injecting seawater into the steel pipe.
The size of the ginger is limited by the length of the spar. Generally the length of the spar about limited from the transport plane 15 m, the diameter of the rim about 25 m, the volume of the fish preserve from the upper volume is small cages becomes about 3,000 m ^3, the large volume than this Ginger is difficult. In addition, the cost of the ginger is high because of the cost of rims and other steel pipes.

(3) Pipe-type ginger (Figure 3)
The shape of the ginger is generally circular, and a high-density polyethylene pipe is used for the frame. A ginger net is attached to this frame. An air inlet and exhaust port are provided at the top of the pipe, and a seawater inlet and drain port are provided at the bottom. The rising and sinking of ginger is caused by injecting high-pressure air into the float to discharge seawater from the pipe to raise the ginger, and the sinking is caused by exhausting the pipe air and injecting seawater into the floating body to sink the ginger. Yes.
The raising and lowering of ginger is performed by injecting air into the pipe, exhausting it, injecting seawater, and draining it. When air is injected into the pipe, the seawater is drained from the drainage port by the pressure of the air, but the air is not evenly distributed in the pipe and collects at the upper part in the pipe. For this reason, the ginger rises from this part, the ginger tilts and the ginger net volume decreases, and the fish in the ginger panic and become very unstable. Since the ginger is tilted, it cannot cope with ginger with a large diameter.

Above (1), (2) and (3) are both raising and lowering ginger by injecting air, seawater, exhausting and draining into the body. (1) and (3) have the disadvantage that the ginger tends to tilt when the ginger rises and falls, making it impossible to handle large ginger.
In (2), there is no problem in the stability of the rise and fall because there is only one rise and fall body, but there are disadvantages that it is difficult to increase the volume of the ginger and the cost is increased.
That is, in the conventional floating and sinking system, buoyancy is obtained by extruding and discharging seawater of buoyant bodies such as floats, steel pipes and pipes by injecting air (on the other hand, air is injected by injecting seawater into the float etc. It took a lot of time to operate. In addition, air cannot be uniformly filled in the buoyancy body, and an air pool is generated inside the buoyancy body. Accordingly, the ginger is inclined to rise from the air pool portion, and there is a possibility of damaging the cultured fish inside.
Patent Document 1 also discloses an ups and downs type ginger similar to a pipe type ginger, but this one has an annular float and a plurality of tubes provided in the float, and has a complicated structure. In addition, there is a risk that the ginger will be tilted unless a plurality of tubes are supplied and exhausted in a well-balanced manner.

  Fish aquaculture is now being carried out for large tuna fish due to international tuna regulations. At present, the installation location is limited to a place where the sea conditions are calm because it is impossible to manufacture a large-scale tuna ginger and a floating type sink that can stably float and sink. In the future, tuna farming will become increasingly popular and will need to be installed offshore. Offshore aquaculture is large because of the rough sea conditions, and there is a strong demand for floating fish that can stably sink.

[B] Fish collection in the box net of the stationary net and lifting of the catch The conceptual diagram of the stationary net is shown in FIG. In general, a fish that hits the road network swims along the road network, enters the playground, rises along the climbing net, and enters the box net from ascending.
In general, the fish caught in the box net is sequentially handed over the bottom of the box net by a plurality of netting devices called catch holers, which are mounted on a ship called a stationary vessel. The fish catch is driven into the fish catcher of the box net, and finally the fish catch is withdrawn from the fish catcher such as the tamo net.

In order to pull the net by the catch haulers that are widely used at present, multiple ships corresponding to the width of the raising ship or the box net are required, and the operation of the catch holer requires personnel, which is very dangerous. There was a need for improvement.
Here, there has been a demand for a system that can float the bottom of the box net and introduce the catch into the fish catching section.

JP 2003-52273 A

  An object of the present invention is to provide a fishery floating and sinking system capable of stably floating and sinking a large fishing net such as a ginger, a box net of a stationary net, and a large and small sorting net of fish while having a simple configuration. It is what.

In order to solve such a problem, the first technical means adopted by the present invention is:
After weaving the fibers into a cylindrical shape, a flexible hose with a lining or lining with rubber or resin as a means for preventing air leakage,
A high-pressure air supply / exhaust port provided in the hose so as to communicate with the internal space of the hose;
Air supply / exhaust means connected to the air supply / exhaust port;
A fishing net connected to the hose or / and at least partly formed by the hose,
The internal space of the hose is closed so that there is no air leakage except for the air supply / exhaust port,
The hose is crushed flat in a state where the internal space is not filled with air, and is formed so as to swell cylindrically in a state where the internal space is filled with air,
The fishing net is formed to sink under its own weight,
The hose swells while receiving water pressure by supplying air to the internal space of the hose in the water by the air supply means, and floats the fishing net body, and by the cooperative action of the exhaust means and water pressure Flattened into a flat shape to sink the fishing net.
A fishing system.

In one aspect, the fishery net is a fish farming ginger. That is, a flexible hose is arranged in a ginger in a floating and sinking ginger that cultivates fish, and the ginger is floated and subsided by supplying and exhausting the flexible hose.
In one aspect, the said flexible hose is arrange | positioned over the perimeter of the fish breeding ginger. In a more specific aspect, the long flexible hose is disposed endlessly (regardless of the shape of a circle, a square, or the like) over the entire circumference of the fish farming ginger.
The ginger is composed of a ginger net and a ginger frame, and preferably the flexible hose is attached to the ginger frame.

In one aspect, the fishery net is a box net portion of a stationary net. In this case, preferably, the hose is disposed on the lower surface of the bottom of the box net of the stationary net. That is, the flexible hose is disposed at the bottom of the stationary net and the bottom of the stationary net is floated or submerged on the sea surface by air supply and exhaust.
In one aspect, the hose disposed at the bottom of the box net of the stationary net is a hose net configured in a mesh pattern over the entire bottom.
In one aspect, the hose net is configured in a brickwork-like mesh pattern.

In one aspect, the fishery net is a fish size selection hose net having a sorting portion having a plurality of meshes and an edge around the sorting portion.
In one aspect, the hose is disposed across the entire edge of the fish size hose net.
In one aspect, a part or all of the fish size selection hose net is formed from the hose.

  In one aspect, a fire hose can be used as the hose. The fire hose can be obtained as a commercial product in the market. By using the fire hose as the flexible hose of the present invention, the cost of the entire floating and sinking system can be reduced and the flexible hose can be easily repaired. It is. A flexible hose or hose net of any shape and size can be handled by appropriately processing (curving, connecting, cutting, adding, etc.) the fire hose.

The second technical means adopted by the present invention is:
After weaving the fibers into a cylindrical shape, a flexible hose with a lining or lining with rubber or resin as a means for preventing air leakage,
A high-pressure air supply / exhaust port provided in the hose so as to communicate with the internal space of the hose;
An air supply / exhaust means connected to the air supply / exhaust port,
The internal space of the hose is closed so that there is no air leakage except for the air supply / exhaust port,
The hose is crushed flat in a state where the internal space is not filled with air, and is formed so as to swell cylindrically in a state where the internal space is filled with air,
In the water, the hose swells while receiving water pressure by supplying air to the internal space of the hose by the air supply means, and is flattened by the cooperative action of the exhaust means and water pressure.
A floating hose used to float and sink a fishing net.

In this invention, compared with the case where the seawater inside a levitating body is extruded and the air inside is pushed out by seawater, the fishnet body can be floated and subsidized in a short time by rapidly injecting and discharging air.
In conventional resin-made and polyethylene-made floats, air gathers at a high position, so that it continues to concentrate on a part and promotes inclination, whereas the flexible hose of the present invention has a “flat shape”. And “cylindrical shape”, and the water pressure is always received from the outer peripheral surface. By injecting air under the water pressure, the air does not concentrate on a part of the interior space of the hose. It is thought that it is easy to fill uniformly. Also, when the air is discharged, the water pressure is always received from the outer peripheral surface evenly, so that the air is smoothly filled by the cooperative action of the exhaust means and the water pressure while the air is uniformly filled in the internal space. Exhaust is performed.
Therefore, the fishery floating and sinking system of the present invention can float and sink a large fishing net such as a large ginger and a box net (bottom) of a stationary net stably in a short time.

In the present invention, the flexible hose to be applied, which is a buoyancy body, can be processed into various shapes and dimensions according to the shape and dimensions of the fishing net.
In addition, the flexible hose is flattened when the internal space is not filled with air, and is formed to swell in a cylindrical shape when the internal space is filled with air. It is lighter and more convenient to carry (for example, flat and rolled).

It is a figure which shows the conventional float type ginger. It is a figure which shows the conventional spar-type ginger. It is a figure which shows the conventional pipe type ginger. It is a conceptual diagram of a stationary network. A conceptual diagram of the rise and fall ginger is shown. The conceptual diagram of a hose is shown. The conceptual diagram of a hose is shown. The conceptual diagram of a horse net is shown. It is a figure which shows the floating of the box net bottom part of the stationary net | network using a hose net. It is a figure which shows 1st Embodiment of the large / small sorting hose net of a fish. It is a figure which shows 2nd Embodiment of the large / small sorting hose net of a fish.

[A] Floating hose The fishing floatation system of the present invention is a flexible hose in which fibers are woven into a cylindrical shape and then lining or lining with rubber or resin as a means for preventing air leakage, and the outer lining is treated. The hoisting / sinking hose includes a high-pressure air supply / exhaust port provided in the hose so as to communicate with the internal space of the hose, and an air supply / exhaust means connected to the supply / exhaust port. .

The main body of the flexible hose can be obtained by weaving warps and wefts made of synthetic fibers such as polyester fibers into a tubular fabric using a plain loom, a circular loom, or the like. Since the flexible hose body is formed of a woven fabric, it has flexibility that allows the shape of the flexible hose to change, and has a predetermined strength that can withstand use in the sea. Yes. The weaving method of the tubular woven fabric constituting the flexible hose body is not limited, and known weaving methods such as plain weave and twill weave can be exemplified.

Rubber (synthetic rubber or natural rubber) or resin (synthetic resin or natural resin) is substantially uniformly coated on the inner peripheral surface of the flexible hose body woven into a cylindrical shape, or the inner peripheral surface and the outer peripheral surface. A lining for preventing air leakage (lining) or a lining and an outer lining is formed. The material forming the lining or the lining and the outer lining is provided with flexibility and stretchability that deforms following changes in the form of the woven flexible hose body. In a more specific example, the lining, or lining and outer lining, is formed from a polyurethane elastomer.

The flexible hose is flattened when the internal space is not filled with air (not only under water pressure but also under atmospheric pressure) and swells in a cylindrical shape when the internal space is filled with air Is formed.

The inner diameter (diameter) of the flexible hose in a cylindrically expanded state is not particularly limited, but in some embodiments, is 60 to 300 mm. Moreover, the internal diameter of the flexible hose in the state swelled cylindrically is uniform over the whole length direction.

The internal space of the flexible hose is closed so that there is no air leakage except for the air supply / exhaust port. In one aspect, the end of the flexible hose is closed. Alternatively, in one aspect, the ends of the flexible hose are connected and connected in a state where there is no air leakage. In one embodiment, the float-type hose is formed endlessly (annular in the illustrated example) from one or a plurality of flexible hoses. When forming an endless floating type hose from one flexible hose, both ends of one flexible hose are connected with a coupler so that there is no air leakage. When forming an endless floating type hose from a plurality of flexible hoses, the ends of the hoses are connected with a coupler in such a manner that there is no air leakage. In addition, the flexible hose can be deformed to an arbitrary form, and a plurality of flexible hoses can be added. Therefore, the flexible hose can be processed into various forms, A dimensioned hose can also be formed.

In one aspect, the air supply / exhaust means is a long hose and is connected to the air supply / exhaust port so as to be in fluid communication with the internal space of the flexible hose. In one aspect, one end of a long hose as an air supply / exhaust means is connected to an air supply / exhaust port provided in the flexible hose (may be provided in a coupling portion by a coupler), The other end of the long hose as an air supply / exhaust means reaches the sea and is connected to a compressor. One or a plurality of intake / exhaust means may be provided for one float / sink type hose. In the case where the float / sink hose is formed from a plurality of flexible hoses having independent internal spaces, at least the number of intake / exhaust means corresponding to the independent internal spaces is required.

In the fishing system, the outer peripheral surface of the flexible hose is exposed so as to be directly subjected to water pressure in water. The flexible hose swells in water while the entire outer peripheral surface receives water pressure evenly by supplying air to the internal space of the hose by the air supply means. By injecting high-pressure air into the internal space of the flexible hose with the outer peripheral surface of the flexible hose receiving the water pressure evenly, the internal space of the flexible hose that has been crushed gradually expands. While being opened, the flexible hose flows smoothly in the length direction, air spreads over the entire internal space in a short time, and the internal space is uniformly filled with air.

On the other hand, in the flexible hose swelled by filling the internal space with air, when the exhaust means is executed, the flexible hose swelled by the cooperative action of the exhaust means and the water pressure is crushed flat. It will be in the state where it was crushed flat. Since a larger water pressure acts on the outer peripheral surface of the flexible hose as it sinks, air is efficiently discharged mainly by the force of water pressure after the start of sedimentation.

Below, the floating and sinking system for fisheries using such a floating and sinking type hose is demonstrated based on embodiment of a floating and sinking type ginger and a floating and sinking type hose net.

[B] Floating fish cage using a floating hose Floating fish fish cage is a floating fish cage for cultivating fish. After weaving the fibers in a cylindrical shape, it is lined with rubber or resin as a means to prevent air leakage or Lined and externally treated, provided with high-pressure air supply / exhaust port, and air supply / exhaust means connected to this supply / exhaust port. It is characterized by subsidence.

Embodiments of the floating and sinking ginger according to the present invention will be described with reference to FIGS. As shown in FIG. 5, the floating / sinking ginger 1 is formed of a cylindrical net 2 having an open top and a bottom. A circular frame portion 3 is provided at the upper end of the net body 2 over the periphery of the opening. The net body 2 may be appropriately provided with a frame portion (not shown) so as to maintain the shape in the sea even at a portion other than the peripheral edge of the upper end. The size of the ginger 1 is not limited, but the diameter and depth of the opening are on the order of several tens of meters. Note that the overall shape of the ginger is not limited to a cylindrical shape, and may be, for example, a rectangular tube shape with a rectangular frame portion provided around the periphery of the opening.

A flexible hose 4 is attached to the circular frame portion 3 of the floating and sinking type ginger 1 along the circumferential direction of the frame portion 3 (the inner periphery or the outer periphery of the frame portion 3). The flexible hose 4 is preferably attached to the upper end portion of the ginger 1, but the portion to which the flexible hose 4 is attached is not limited to the upper end of the ginger 1, and is an intermediate portion in the height direction. Alternatively, the flexible hose 4 may be attached to the lower part.

A flexible hose 4 having a predetermined length corresponding to the length of the circular frame portion 3 is prepared, bent into an annular shape, and fixed at both ends with a coupler 5 so that there is no air leakage. A high-pressure air supply / exhaust port 6 is provided so as to communicate with the air supply / exhaust port 6, and one end of a long ventilation hose 7 is connected to the supply / exhaust port 6. The other end of the ventilation hose 7 is connected to a compressor (not shown) at sea. In the illustrated embodiment, the air supply / exhaust port 6 is formed at the coupler 5, but the air supply / exhaust port 6 may be formed in another portion of the flexible hose 4. FIG. 7 shows a floating type hose in which two flexible hoses 4A and 4B are annularly arranged. Each end of flexible hose 4A, 4B is obstruct | occluded. High-pressure air supply / exhaust ports 6 are respectively provided at a pair of opposing ends of the flexible hoses 4 </ b> A and 4 </ b> B, and each supply / exhaust port 6 is connected to a common ventilation hose 7.

The flexible hose 4 is a hose in which a tubular woven fabric is woven with a plain loom or a circular loom to form a main body, and then the inner side is lined with resin, rubber or the like. Can be used. Since the main body of the flexible hose 4 is made of a woven fabric, the flexible hose 4 is flexible and can be manufactured in an arbitrary shape such as a circle, and provides an unprecedented buoyancy material.

In this embodiment, by supplying air to the ventilation hose 7, the entire flexible hose 4 swells instantaneously and generates buoyancy, so that the entire ginger can be lifted uniformly. In conventional buoyancy systems (1) and (2), it takes time to drain the floating seawater by supplying air, and air does not uniformly fill the buoyant body, so air is trapped inside the floating body. It was raised from this part, and the ginger was tilted and surfaced, and it was easy to damage the fish inside.

In the sinking, the air in the flexible hose 4 is exhausted from the exhaust port, whereby the air in the flexible hose 4 is exhausted by the water pressure, and the ginger sinks uniformly. Since the sinking is not caused by the head of the exhaust port as before, there is no ginger tilting at all. In other words, this ginger has an unprecedented feature that the ginger floats evenly by the air supply to the flexible hose 4 and sinks uniformly by the exhaust. Is possible.

[C] Box net floating / floating device for stationary net Hose net box net section floating / floating device is made of high-pressure air after weaving fibers into a cylinder and then lining or lining with rubber or resin to prevent air leakage An air supply / exhaust port is connected to the supply / exhaust port, and a floating hose is connected to the bottom of the box net of the stationary net. It is characterized by rising or falling.

In this embodiment, after weaving the fibers into a cylindrical shape, as a means for preventing air leakage, a lining or lining is applied with a flexible material, and the outer liner is processed, and a high-pressure air supply / exhaust port is provided. As shown in FIG. 8, a floating hose connected to the air supply / exhaust means is formed in a mesh pattern to form a hose net 8 for floating the bottom of the box net of the stationary net. As shown in FIG. 9, the hose net 8 is provided at the bottom of the box net 90 of the stationary net 9, and the bottom of the box net 90 of the stationary net floats to the sea surface by air supply and exhaust, and sinks into the sea. The size of the box net 90 is not limited, but generally, the size of the bottom is about 70 × 100 m and the height is about 60 m. The hose of the hose net 8 extends over an area larger than the area of the bottom of the box net 90.

As shown in FIG. 8, the hose net 8 is formed in a mesh pattern like a brick pile from a hose extending in the weft direction over a square shape as a whole. More specifically, the hose net 8 has a plurality of long weft hoses 80 extending in the first direction in parallel with a space between each other, and a second direction ( In the illustrated example, a plurality of short warp hoses 81 extending in a direction perpendicular to the first direction, and a long warp hose 81 connecting the longitudinal ends of the weft hoses 80 in the second direction. ′. The short warp hose 81 is arranged so as not to be continuous in the second direction. That is, both ends of the short vertical hose 81 are respectively connected to the parallel weft hoses 80 adjacent to each other, and the ends of the vertical hose 81 are not directly connected to each other. In the present specification, a mesh pattern in which the short warp hose 81 does not continue vertically in two or more stages is referred to as a brickwork-like mesh pattern.

As a whole, the four peripheral edges of the rectangular hose net 8 are composed of a front and rear (up and down in FIG. 8) weft hose 80 and a lateral warp hose 81, and one (upward in FIG. 8) of the weft hose 80 on one side. In the center in the length direction, a high-pressure air supply / exhaust port 6 'is provided. The air injected into the weft hose 80 from the air supply / exhaust port 6 ′ flows in the inner space of the weft hose 80 in the first direction, and passes through the inner space of the four warp hoses 81 communicating with the weft hose 80. It flows in the second direction, flows in the first direction of the inner space of the weft hose 80 adjacent to the weft hose 80, and then passes through the inner space of the warp hose 81 and the weft hose 80 in the second direction. The inner space of the hose net 8 is filled with air by alternately flowing in the direction of 1.

By forming the hose net 8 by arranging the floating hose in a mesh pattern such as a brickwork, the entire hose net 8 floats almost simultaneously so that the high-pressure air is uniformly transmitted through the hose of the hose net 8. This is a big feature that has never been seen before. In the illustrated embodiment, a square hose net is shown as a whole, but the shape is not limited as long as it is arranged on the lower surface of the bottom of the box net and can float on the bottom. For example, a polygonal shape It may have an overall shape such as an oval shape.

In the stationary net 9, the fish that hits the road net 91 swims along the road net 91, enters the sports field 92, rises along the ascending net 93, and enters the box net 90 from the ascending net 94. By raising the bottom of the box net 90 of the stationary net to the sea surface with the hose net 8, there is no need for a ship to pull the net as before, and there is no need to use a catch hauler, improving safety. It is possible to guide the fish catch to the fish catcher or drop net (safe), which is an unprecedented method of netting.

[D] Fish Size Sorting Horsenet Fish Size Sorting Horsenet 10 performs size sorting of cultured fish in aquaculture ginger, size sorting of fish in a box net of stationary nets, etc. As shown in FIG. 10 and FIG. A sorting portion having a mesh and a peripheral edge of the sorting portion. The size of the fish size hose net is set so as to match the shape of each net provided with the hose net as much as possible, and the size of the fish is selected according to the size of the mesh.

In the embodiment shown in FIG. 10, the entire fish size selection hose net is formed of a flexible hose. Specifically, the edge of the fish size hose net 10 is formed from the hose 100, and a plurality of meshes are formed by the hose 100 extending in the weft direction between the opposing edges. The internal spaces of all the hoses 100 are in communication, and high-pressure air is supplied and exhausted using one air supply / exhaust port provided in the hose 100 at the edge.

In the embodiment shown in FIG. 11, a part of the large / small sorting hose net for fish is composed of a flexible hose. Specifically, the edge of the fish size hose net 10 is formed from the hose 100, and a plurality of meshes, that is, nets, are formed by ropes 101 extending in the weft direction between the opposing edges. High-pressure air is supplied and exhausted using one air supply / exhaust port provided in the hose 100 at the edge. Alternatively, the edge of the fish size selection hose net is formed from a rope, a plurality of meshes are formed by ropes extending in the weft direction between the opposing edges, and a flexible hose is provided along the edge rope. Also good.

In order to select the size of fish, firstly, a sorting hose net 10 is installed at the bottom of a ginger or a stationary net, high-pressure air is supplied to the hose net 10, the hose net is developed and floated, and the size of the fish is selected by the mesh.

INDUSTRIAL APPLICABILITY The present invention can be used for aquaculture of large tuna fish using floating and sinking ginger, collection of fish in a box net of a stationary net, lifting of fish, selection of fish size, and the like. More specifically, the use of the float / hose type hose of the present invention makes it possible for a large ginger to stabilize, sink and float, and to have a great effect on offshore culture. Is installed at the bottom of the box net of the stationary net, so that a ship for picking up the net is not necessary, and there is no need to use a catch hauler, safety is improved, and the catch can be guided to the fish catch section. .

DESCRIPTION OF SYMBOLS 1 Floating and sinking ginger 2 Net body 3 Frame part 4 Flexible hose 5 Coupler 6 Air supply / exhaust port 6 'Air supply / exhaust port 7 Ventilation hose 8 Hose net 9 Stationary net 90 Box net 10 Fish large and small selection hose net 100 Edge flexibility Hose 101 rope

Claims (11)

After weaving the fibers into a cylindrical shape, a flexible hose with a lining or lining with rubber or resin as a means for preventing air leakage,
At least one high-pressure air supply / exhaust port provided in the hose so as to communicate with the internal space of the hose;
Air supply / exhaust means connected to the air supply / exhaust port;
A fishing net connected to the hose or / and at least partly formed by the hose,
The internal space of the hose is closed so that there is no air leakage except for the air supply / exhaust port,
The hose is crushed flat in a state where the internal space is not filled with air, and is formed so as to swell cylindrically in a state where the internal space is filled with air,
The fishing net is formed to sink under its own weight,
The hose swells while receiving water pressure by supplying air to the internal space of the hose in the water by the air supply means, and floats the fishing net body, and by the cooperative action of the exhaust means and water pressure A fishery floating and sinking system that is flattened and sinks the fishnet.   The fishery floating and sinking system according to claim 1, wherein the fishery net is a fish farming ginger.   The said hose is a floating and sinking system for fisheries of Claim 2 arrange | positioned over the perimeter of the fish farming ginger.   The fishery floating and sinking system according to claim 1, wherein the fishery net is a box net portion of a stationary net.   The said hose is a floating and sinking system for fisheries of Claim 4 arrange | positioned and located in the lower surface of the bottom part of the box net of a stationary net.   The fishery floating and sinking system according to claim 5, wherein the hose disposed at the bottom of the box net of the stationary net is a hose net configured in a mesh pattern over the entire bottom.   2. The fishery floating and sinking system according to claim 1, wherein the fishery net is a fish size hose net having a sorting portion having a plurality of meshes and an edge around the sorting portion.   The fisheries floating and sinking system according to claim 7, wherein the hose is arranged over the entire edge of the fish size selection hose net.   The fishery floating and sinking system according to claim 7 or 8, wherein a part or all of the fish size hose net is formed from the hose.   The fishery floating and sinking system according to any one of claims 1 to 9, wherein the flexible hose is a fire hose. After weaving the fibers into a cylindrical shape, a flexible hose with a lining or lining with rubber or resin as a means for preventing air leakage,
At least one high-pressure air supply / exhaust port provided in the hose so as to communicate with the internal space of the hose;
An air supply / exhaust means connected to the air supply / exhaust port,
The internal space of the hose is closed so that there is no air leakage except for the air supply / exhaust port,
The hose is crushed flat in a state where the internal space is not filled with air, and is formed so as to swell cylindrically in a state where the internal space is filled with air,
The hose is swelled under water pressure by supplying air to the internal space of the hose by the air supply means in water, and collapses into a flat shape by the cooperative action of the exhaust means and water pressure. Floating hose used for floating and sinking.

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