JP4976431B2 - Giant jellyfish shredding system and system using the same system - Google Patents

Description

The present invention relates to a system for shredding giant jellyfish such as Echizen jellyfish and a system for feeding shredded pieces of giant jellyfish as bait to sea bream living on the seabed.

In recent years, large numbers of giant jellyfish have become a problem on the coasts of Japan. This giant jellyfish is called Echizen jellyfish, and the diameter of the umbrella is huge, about 1m to 2m, and the maximum weight is 150kg. Echizen jellyfish have been outbreaking for the second consecutive year in 2002 and 2003, causing serious damage to the fishery from the coasts of Japan, Tsugaru Strait, Sanriku and Boso. Damaged fisheries were fixed nets, stabbed nets, bottom nets, etc., especially the damage of fixed nets. Since then, although not consecutively, a large number of visitors to the sea near Japan have been damaged.
The details of the occurrence and excursion of Echizen jellyfish are still unclear. According to one theory, it occurs in the East China Sea from October to December of the previous year and appears in the Sea of Japan while growing rapidly on the Tsushima warm current. Echizen jellyfish drifted to the Sea of Japan appeared off the coast of Shimane Prefecture to Fukui Prefecture in August, distributed widely from Yamaguchi Prefecture to Aomori Prefecture in September, and widely distributed to the Sanriku coast through the Tsugaru Strait in October. In December, it reached the Boso coast.

Several methods have been proposed to eliminate damage to Echizen jellyfish that have been migrating in large quantities over such a large area and causing enormous damage. Conventional methods and devices for stopping damage caused by jellyfish are mainly methods and devices for small jellyfish, and there are not many proposals for giant jellyfish like Echizen jellyfish (hereinafter simply called Echizen jellyfish). This is because Echizen jellyfish have recently appeared in large quantities in the waters near Japan. The conventional method for small jellyfish is difficult to apply to Echizen jellyfish as it is. That's because Echizen jellyfish are much larger than traditional small jellyfish and come in large numbers. The following describes the conventional method (or device) for eliminating or killing Echizen jellyfish. The conventional methods include a method of preventing Echizen jellyfish from entering the net such as a stationary net, a method of letting the Echizen jellyfish enter the network, and a method of eliminating (killing and removing) Echizen jellyfish. The previous two methods have a considerable number of proposals, but since they are not directly related to the present invention, I will explain the conventional method of removing the last Echizen jellyfish.

First, as described in Non-Patent Document 1, the conventional method 1 is a method of rolling around a cylindrical net with two tanks in the sea area where Echizen jellyfish is swimming. The cylindrical net has a large opening at the entrance and narrows as it goes deeper, and a lattice-like wire is stretched at the back. The Echizen jellyfish in the net is cut into pieces. There is a report that the net length is 25m and good results were obtained in a test with a speed of 3 knots (approx. 5.6 km / hour).
Report of Independent Administrative Agency / Fisheries Research Center In addition, as a conventional method 2, for example, it is a method of cutting and removing jellyfish in a stationary net. Specifically, an instrument with a stainless steel cutter mounted in a grid in an approximately 2 meter square frame is placed on the sea near the stationary net, and the Echizen jellyfish in the stationary net is dropped onto the instrument. A method of cutting and removing Echizen jellyfish has been proposed. Report from Fukui Prefectural Fisheries Experiment Station

However, Echizen jellyfish travel around Japan from around September to December, and the stationary net is in operation from the end of August to the end of January of the following year, and the period of damage is long. Moreover, it is said that the number of Echizen jellyfish coming to the sea near Japan is said to be 100 million, and it takes a lot of labor and cost to eliminate this, which is a challenge. In addition, Conventional Method 1 and Conventional Method 2 only eliminate Echizen jellyfish and do not attempt to use Echizen jellyfish effectively. Therefore, the labor and cost required are spent only for the purpose of removal. In addition to the Echizen jellyfish, there is a jellyfish in the waters near Japan. The moon jellyfish is usually about 15cm in diameter, but some of them are over 50cm. Moon jellyfish are sucked in large quantities at the seawater intake of the power plant, causing damage.

The present invention has been made under such circumstances, and aims to eliminate an Echizen jellyfish that has been migrating to the sea where a stationary net is stretched, and proposes an extermination device with a low running cost, and the effectiveness of the Echizen jellyfish. The challenge is to provide a system that can be utilized.

The present invention employs the following configuration in order to solve the above problems. That is,
The invention according to claim 1 is a guide net for collecting giant jellyfish swimming on an ocean current, a guide net for guiding the giant jellyfish collected by the guide net to an entrance of a shredding device, and the giant jellyfish A rotating blade provided with a blade for cutting a giant jellyfish in a rotating body, and a water wheel that rotationally drives the rotating blade using the flow energy of ocean currents. It is characterized by comprising.

According to a second aspect of the present invention, in the first aspect of the present invention, the rotary blade has one or a plurality of blade tips arranged in a rotational direction on a rotating cylindrical surface having the same radius, and the blade It is characterized in that both ends are fixed by two side plates.

According to a third aspect of the present invention, in the first aspect of the invention, the rotary blade is configured such that the blade tip of one or a plurality of blades is directed in the same rotational direction, and the blade is disposed in the radial direction of the rotation axis. The arranged set is further arranged in the axial direction and fixed to the rotating shaft.

According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the shredding device supports the rotary blade rotatably around a horizontal axis, The cutting edge is configured to rotate downward.

According to a fifth aspect of the present invention, in the invention according to any one of the first to third aspects, the shredding device comprises a pair of the rotary blades, and each of the rotary blades has a vertical axis. The blades of the rotary blades rotate in directions opposite to each other, and the upstream blade edge rotates in an inward direction.

According to a sixth aspect of the present invention, in the invention according to any one of the first to fifth aspects, the shredder is configured such that the rotational driving force is generated in the same direction as the rotational direction of the cutting edge. It is characterized by providing.

The invention according to claim 7 is the invention according to any one of claims 1 to 6, characterized in that the water wheel is constituted by a Savonius type water wheel, a paddle type water wheel or a cup type water wheel.

The invention according to claim 8 is the invention according to any one of claims 1 to 7, wherein the shredding device is fixed horizontally at a water depth of 5 to 30 meters from the sea surface. It is a feature.

The invention according to claim 9 is the invention according to any one of claims 1 to 8, characterized in that the guide net is fixed in the sea by fixing means such as a float, a sink, and a rope. Yes.

Invention of Claim 10 provided the fish reef in the downstream of the said shredding apparatus, and utilized the giant jellyfish shredding system of any one of Claims 1-8 for the fish which gathered in this fish reef It is characterized by feeding large pieces of giant jellyfish as food.

The invention described in claim 11 uses the giant jellyfish shredding system according to any one of claims 1 to 8 to provide a net on the downstream side of the shredding device, and downstream of the net. The giant jellyfish strips are prevented from diffusing and the giant jellyfish and the giant jellyfish strips are prevented from entering the stationary net laid downstream of the net.

The invention according to claim 12 is a feeding for supplying a giant jellyfish strip shredded using the giant jellyfish shredding system according to any one of claims 1 to 8 to the seabed inhabited by coral In the system, the feeding system is capable of connecting / separating a container that accommodates the strip of the giant jellyfish, an opening of the shredding device or a connection hose connected to the discharge opening, and an opening of the container. A connecting means, a conveying means for transporting the container to a predetermined position in the sea and a predetermined water depth, and a discharging means for releasing a giant jellyfish strip in the container toward the habitat area of the coral It is characterized by.

The invention described in claim 13 is characterized in that, in the invention described in claim 12, the habitat area of the salmon is the habitat area of a grown female crab.

According to the present invention, if a giant jellyfish shredding system is laid, there is no need for work after that, so running costs are almost unnecessary, and energy consumption such as oil is not required, so that it is useful for ecology. . In addition, since the giant jellyfish shredding system discharges the strip from a predetermined discharge port, it can be easily used for other systems.

<Embodiment 1>
1 shows an overall perspective view of Embodiment 1 of the present invention, and FIG. 2 shows an overall top plan view (A) and a front view (B). In FIG. 1 and FIG. 2, reference numeral 11 denotes a guide net stretched in the sea, which is a guide net that gathers giant jellyfish such as Echizen jellyfish (hereinafter referred to as Echizen jellyfish) that come and ride on the ocean current in the approximate center. The guide net 11 is preferably laid substantially perpendicular to the direction of the ocean current (the arrow in the figure). In addition, when the flow direction of the ocean current changes, it is preferable to lay it substantially perpendicular to the average maximum flow direction. The upper edge 12 of the guide net 11 is floated on the surface of the rope 12a with a float 12b, and the lower edge 13 of the guide net 11 is fixed in the sea with a sink 13b on the rope 13a. The depth of the lower edge 13 is determined according to the swimming depth of the Echizen jellyfish 10. For example, if the normal Echizen jellyfish swimming depth is about 0 to 30 m, the depth of the lower edge 13 is about 30 m. Further, the left and right ends of the upper edge 12 are fixed by the fixing means 14 and firmly fixed so that the guide net 11 is not washed away by the ocean current. The fixing means 14 is fixed by a rope 14a, a float 14b, and a sink 14c. In order to fix firmly, you may utilize the rock | bump etc. which protrude from the seabed.

A guide net 16 for guiding the Echizen jellyfish 10 to the entrance of the shredding device 20 is provided in the approximate center of the guide net 11. The guide net 16 is formed in a quadrangular pyramid shape with the top portion cut, and is configured to connect the cut portion to the inlet portion of the shredding device 20. For example, it is desirable that the entrance portion of the guide net 16 is shared by the upper rope 12a and the lower rope 13a of the guide net 11. Further, it is desirable that the width is at least twice the entrance width of the shredding device 20 so that the Echizen jellyfish 10 is smoothly guided to the entrance of the shredding device 20. The length of the guide net 16 in the ocean current direction is an angle at which the Echizen jellyfish 10 entering the guide net 16 does not move in the reverse direction, and the angle at which the guide net 16 moves to the entrance of the shredding device 20, for example, a cone angle is about 30 degrees. And The size of the mesh of the guide net 11 and the guide net 16 is determined by considering the size of the Echizen jellyfish 10 migrating to the sea area (for example, the size of an umbrella). Determine the mesh size that can be guided to the entrance.

<Example 1 of shredding device>
Example 1 of the shredding device 20 will be described below.
FIG. 3 shows an overall view of the shredding device 20 according to the first embodiment. 3A shows a front view, FIG. 3B shows a plan view seen from below, and FIG. 3C shows a side view. In FIG. 3, reference numeral 21 denotes a cover of the shredding device 20. The cover 21 is a cylindrical body, the entrance 22 of the Echizen jellyfish 10 is provided in the front, and the discharge port 23 which discharges the strip of the Echizen jellyfish 10 is provided in the lower part of the back. The opening edge of the inlet 22 is connected to the terminal edge of the guiding network 16. A rotary blade 24 is housed inside the cover 21, and shafts 25 connected to both sides of the rotary blade 24 are rotatably supported by bearings 26 provided on both sides of the cover 21. A rotation drive device 27 is connected to the right side of the shaft 25 (see FIG. 3A), and a rotation drive device 28 is connected to the left side of the shaft 25. The rotary drive devices 27 and 28 are formed to have the same structure and the same size, and are configured to rotate in the same direction. As shown by the dotted line in FIG. 3C, the rotation rotates so that the blade descends from the top to the bottom at the entrance 22. This is because the Echizen jellyfish umbrella is cut first.

FIG. 4 shows a first embodiment of the rotary blade 24. 4A shows an overall perspective view, FIG. 4B shows a front view, and FIG. 4C shows a cross-sectional side view. In FIG. 4, the first embodiment has three elongated blades 24a, 24b having blade edges in the same direction at substantially equal intervals (120 ° intervals in the figure) on the circumference of the same radius centered on the rotation center O. 24c is arranged parallel to the rotation center axis, and both ends are fixed to the two disks 30, 31. Rotating shafts 25 and 25 are fixed outside the disks 30 and 31, and each rotating shaft is supported by a bearing 26. Further, rotational drive devices 27 and 28 are connected to the outside of the rotary shafts 25 and 25. It is desirable that the rotary shaft 25 be substantially parallel (or horizontal) to the sea surface. The blades 24a to 24c do not have to be strong and thick blades such as swords, but thin blades such as “razor” are sufficient. This is because the Echizen jellyfish umbrella can be easily cut. However, the strength against the twist of the shaft due to the deviation of the rotational speed of the rotary drive devices 27 and 28 is required.

FIG. 5 shows another method (Example 2) of the rotary blade. FIG. 5A is a front view of a rotary blade according to the method of Example 2, and FIG. 5B is a sectional side view. In this method, three blades 30a to 30c are fixed to the shaft 29 in the radial direction, and similar blades 30 are provided in parallel at positions spaced apart by a predetermined interval in the axial direction. The blades 30a to 30c are provided with cutting edges in the rotation direction (left direction in the figure). Further, protrusions are provided at the tips of the blades 30a to 30c. This is to improve the grip to the Echizen jellyfish 10. FIG. 5C and FIG. 5D show still another method (Example 3). The method of Example 3 is a method in which the blade of Example 2 is combined with the blade of Example 1, and blades 24a to 24c are provided in the circumferential direction of the rotating body and blades 30a to 30c are provided in the radial direction. ing. The method of the third embodiment is suitable when it is desired to make the Echizen jellyfish cut pieces fine. In addition, the structure of a blade is not limited to the system described so far. For example, although the number of blades in the circumferential direction is three in the method illustrated so far, it may be any one of 1-4. Further, the shape of the blade is not limited to the shape shown in the figure.

FIG. 6 shows an embodiment in which a Savonius type water wheel is used in the rotary drive device 27. The Savonius method was devised by the Finnish Savonius in 1929 and is also known as a windmill, but is also known as a watermill. The characteristics of the Savonius-type water turbine are that it always rotates in one direction with respect to the flow in all directions, is self-starting even in a low-speed flow with a large starting torque, and is suitable for power generation in ocean currents and tidal currents at low flow rates. There are features such as being. The power generation efficiency of this method is 20-30%. From the above characteristics, it is suitable to be adopted in the embodiment of the present invention as compared with other water wheel systems. That is, it is desirable that the rotary blade 24 of the present invention always rotates at a low speed. 6A is a front view, FIG. 6B is a sectional side view, and FIG. 6C is a perspective view. As shown in FIG. 6, the Savonius type water wheel has a configuration in which three (or 2 to 4) semicircular arc blades 33a to 33c are eccentrically combined, and both ends thereof are fixed plates 34a and 34b. The shaft 25 is fixed to the fixed plate 34b.

In the shredding device 20, as shown in FIG. 4, rotation driving devices 27 and 28 are provided on both sides of the rotary blade 24. The rotary drive device 27 and the rotary drive device 28 have the same configuration and size, but the blades 33a to 33c are arranged in opposite directions. For this reason, the arrangement direction of the shredding device 20 is prevented from changing or shaking depending on the velocity of the ocean current and the angle of the ocean current flow direction. The rotary drive device 27 (28) of the present invention is not limited to the one using the Savonius method, and may be one using a cup type water wheel or a paddle type water wheel.

In the shredding device 20 according to the first embodiment, the giant jellyfish that has entered from the inlet 22 are cut by the rotary blade 24, and the cut pieces are discharged from an open port provided on the lower back side of the case 21. In addition, as for the rotational speed of the rotary blade 24 (44) of the shredding device 20, it is desirable for the peripheral speed of an outer periphery to be about 5 cm-50 cm per second in the load state which is cutting the Echizen jellyfish. If the rotational speed is too slow, the Echizen jellyfish cannot be cut well, and conversely if it is too fast, it cannot be cut well. The peripheral speed of the rotary blade differs depending on the speed of the ocean current, the output horsepower of the rotary drive device, the load state, that is, the size of Echizen jellyfish and the degree of congestion. Therefore, it is necessary to design specific dimensions according to the conditions of the sea area.

<Example 2 of shredding device>
FIG. 7 shows another embodiment (Example 2) of the shredding device 40. 7A is a plan view seen from above, FIG. 7B is a front view, and FIG. 7C is a side view. FIG. 8 is a detailed view of the rotary blades 44 and 45. 8A is a plan view seen from above, FIG. 8B is a front view, and FIG. 8C is a cross-sectional plan view seen from below. 7 and 8, the case 41 is a cylindrical body having a substantially elliptical cross section, and an entrance 42 through which Echizen jellyfish enters is provided on the front surface, and a discharge port 43 through which strips of Echizen jellyfish are provided on the back surface. It is. Two rotary blades 44 and 45 are disposed inside the case 41 and are supported so as to rotate about a vertical axis.

Fixed plates 48a, 48b and 49a, 49b are respectively fixed above and below the central rotating shafts 48c, 49c, and blades 44a-44c are fixed between the fixed plates 48a, 48b by welding or the like, and the fixed plates 49a, 49b are fixed. Blades 45a to 45c are fixed between the two. As shown in FIG. 8C, the blade tips of the blades 44a to 44c rotate in the counterclockwise direction, and the blade tips of the blades 45a to 45c rotate in the clockwise direction. Further, driving devices 46 and 47 are disposed on the upper side of the case 41, and are connected to the central rotating shafts 48c and 49c, respectively. The blades of the driving devices 46 and 47 are formed so as to coincide with the rotation direction of the blades 44a to 44c or the blades 45a to 45c.
As described above, in the shredding device 40 of the second embodiment, the two rotating blades 44 and 45 rotate so as to mesh with each other, and the giant jellyfish that has entered from the inlet 42 is cut into strips by the rotating blades 44 and 45. The cut strip is discharged from the discharge port 43.

As is clear from the above description, if the giant jellyfish shredding system of the first embodiment is laid once, oil, labor costs and fishing boats are unnecessary for a long period of time, and not only the running cost is low, but also a large amount Echizen jellyfish can be removed. The effect of Echizen jellyfish in particular is long since they come to the sea near Japan, so the effect is immeasurable. In addition, the shredded giant jellyfish strips come out from one open port 23 (43) without being scattered around the sea floor, making it easier to process and clean up later. effective.

<Embodiment 2>
FIG. 9 is a second embodiment using the giant jellyfish shredding device of the first embodiment, creating a fish reef feeding on the seabed with a giant jellyfish strip such as Echizen jellyfish, and supplying the fish reef to the fish reef. It is an overall perspective view showing an example of use of growing fish. In FIG. 9, the guide net 16 is connected to the front entrance 22 (42) of the shredding device 20 (40), and the guide net 11 is connected to both sides of the guide net 16. Connected to the discharge port 23 of the shredding device 20 is a guide hose 53 that guides the strip of Echizen jellyfish to the opening 51 of the fish reef 50. Therefore, the giant jellyfish 10 such as Echizen jellyfish that have traveled on the ocean current are guided by the guide net 11 and gathered in the guide net 16, and are further guided by the guide net 16 to the inlet 22 of the shredding device 20. The Echizen jellyfish guided to the inlet 22 is cut into strips by the rotary blade of the shredding device 20, and the cut strips are discharged from the discharge port 23.

The fish reef 50 is provided with an opening 51 in the upper part, and the fish reef 50 is a suitable place for fish that feed on strips of Echizen jellyfish. Innumerable hideouts (holes, etc.) 54 designed to be a hiding place when it flows and a resting place when the flow is fast are provided on the inner surface, the outer surface, and the upper surface of the fish reef 50. It is known that there are surprisingly many fish that eat Echizen jellyfish among fish living in the sea. For example, it has been known for a long time that Echizen jellyfish have been used as fishing bait for carp. It is also known that sunfish eat jellyfish. It is also known that a lot of jellyfish come out even when examining the stomach of cod. In addition, the kingfisher usually eats shellfish, but it has been observed that they have settled under the umbrella of Echizen jellyfish for a certain period of time and sometimes eaten by eating Echizen jellyfish.

As mentioned above, since there are many fish that eat Echizen jellyfish as food, it is possible to create a fish reef of such fish and supply it as a good reef by supplying strips of Echizen jellyfish as food. It is done. Sea turtles (but not fish) are also known to eat jellyfish, which also helps protect sea turtles.

<Embodiment 3>
The third embodiment is another utilization method (or system) using the first embodiment. 10 and 11 are diagrams for explaining this utilization system. Snow crab (also called Echizen crab or pine crab, depending on production area) has been reported to eat Echizen jellyfish as food. Echizen jellyfish die when the time comes (about one year after birth) and sink to the seabed. Echizen jellyfish that sinks to the bottom of the sea take more than 10 days to decompose, so some are washed away and carried to the deep sea. Echizen jellyfish transported to the deep sea are eaten and decomposed by living organisms (such as cormorants) living in the deep sea. However, if we leave it to such a natural flow, we cannot supply a sufficient amount of Echizen jellyfish as food for snow crab. In addition, snow crab has different growth stages and different sea areas. The protection of females is important from the viewpoint of resource conservation, and because of the ecological characteristics that females live in groups in a sea area with a depth of 250m, a part of the sea area is surrounded by concrete blocks, and the operation of the bottom net is physically performed. A protected sea area 80 is provided. For example, the protected sea area 80 of Fukui Prefecture is provided at a predetermined position along a line with a depth of 250 m. Therefore, in Embodiment 3, a method or system for supplying Echizen jellyfish strips as food to snow crab living in a protected sea area will be described.

FIG. 10 shows the steps of storing the Echizen jellyfish strips in the transport pit 60, and FIG. 11 shows the steps of transporting and releasing them to the snow crab protected sea area 80. In FIG. 10, a hose 63 that connects the discharge port 43 of the shredding device 20 (40) and the opening 61 of the basket 60 is connected to the discharge port 43. A connecting means 64 is provided at the open end of the hose 63, and is configured to be able to come into and out of the opening 61. Further, a buoy 62 is connected to the connecting means 64 by a rope 62a so that the position can be easily confirmed in a state where the connection is disconnected. Further, the hose 63 may be lengthened so that the opening / closing operation of the opening 61 and the connecting means 64 can be performed on the sea surface. Further, when arriving at the protected sea area 80, the ridge 60 is held in an inverted state in order to release a giant jellyfish strip from the ridge 60. For this purpose, locking means 65 and 66 for locking hooks, which will be described later, are provided on the bottom and top of the collar 60.

On the other hand, in FIG. 11, a fishing boat 70 that carries the rod 60 confirms the position of the winch 71 that raises and lowers the rod 60 in the sea, the antenna 75 that receives positional information from GPS sanitation or terrestrial radio tower, and the rod 60. An ultrasonic transceiver 77 and a controller 79 for controlling them are provided. The rope 72 used for the winch 71 has a length of 250 m so that it can reach the bottom of the protected sea area 80, and a hook 66 a is provided at the tip of the rope 72 so that the anchor 60 can be held upright. Furthermore, a hook 65a is provided at the tip of the branched rope 72a so that it can be held in an inverted state. In addition, a device 73 that enables a hook opening operation is provided at the base of the hook 66a, and an ultrasonic receiver (not shown) is further provided in the device 73. The memory of the controller 79 stores three-dimensional position data (sea bottom position and water depth data) of the protected sea area 80.

The third embodiment functions as follows with the above system configuration. In Step 1 (FIG. 10), the anchor 60 is connected in advance to the opening of the connection hose 63 and the connection means 64 and submerged in the sea (or the sea floor). In anticipation of an appropriate amount of giant jellyfish pieces stored in the rod 60, the buoy 62 is approached by the fishing boat 70 and the rope 62a is wound up. When the rod 60 comes out on the water surface, the connecting means 64 of the rod 60 is removed from the opening 61, and the rod locking means 66 is connected to the hook 66a provided at the tip of the rope 72 of the fishing boat. At the same time, the hook 65 a is connected to the locking means 65. Further, a reflector 78 that reflects ultrasonic waves is attached to the ridge 60. Further, for the next preparation, another new empty kite 60 may be connected to the connecting means 64 and submerged in the sea.

In Step 2 (FIG. 11), the fishing boat 70 is moving at a low speed to a position just above the protected area of the snow crab while keeping the ridge 60 storing the giant jellyfish pieces in an upright state at an appropriate depth near the sea surface. To do. Since the position of the seabed of the protected sea area 80 is recorded in advance in the memory of the controller 79, the current position of the fishing boat is obtained from the signal received by the receiving antenna 75 and compared with the protected sea area 80 recorded in the memory. By this comparison, it is possible to reach almost directly above the protected sea area 80. FIG. 11A shows this state. Next, as shown in FIG. 11B, while the rope 72 is extended by the winch 71, ultrasonic waves are transmitted from the ultrasonic transmitter / receiver 77, the reflected waves from the reflecting plate 78 are received, and the direction of the ridge 60 ( Angle) and the distance to the heel, and the horizontal position and depth of the heel 60 are calculated. As a result, the distance between the seabed position of the protected sea area 80, the horizontal position up to the ridge 60, and the depth deviation is obtained. Release from the ultrasonic transmitter / receiver 77 when the horizontal distance deviation and the water depth distance deviation are within the allowable range (for example, when entering the vicinity of the sea floor where the flow velocity is almost zero just above the protected sea area). When the signal is transmitted, the receiver 73 receives this release signal, opens the hook 66a, the hook 66a is disengaged from the locking means 66, and as shown in FIG. A giant jellyfish strip is released into the protected sea area 80. As a result of feeding the snow crab inhabiting the protected sea area, the number of snow crab is increased or the growth is promoted.

1 shows an overall perspective view of Embodiment 1 of the present invention. The top plan view (A) and front view (B) of Embodiment 1 are shown. Example 1 of the shredding device 20 is shown. (A) shows a front view, (B) shows a plan view seen from below, and (C) shows a side view. Example 1 of the rotary blade 24 is shown. (A) shows an overall perspective view, (B) shows a front view, and (C) shows a cross-sectional side view. Example 2 of a rotary blade is shown. (A) is a front view of a rotary blade, (B) shows a cross-sectional side view. An embodiment of the rotation drive device 27 will be shown. Example 2 of the shredding device 20 is shown. (A) is the top view seen from the top, (B) is a front view, (C) shows a side view. A detailed view of the rotary blades 44 and 45 is shown. (A) is a plan view seen from above, (B) is a front view, and (C) shows a cross-sectional plan view seen from below. Embodiment 2 using the shredding device of Embodiment 1 is shown. The step of storing the strip of Echizen jellyfish in the transporting basket 60 is shown. Steps to transport and release to the snow crab protected area.

DESCRIPTION OF SYMBOLS 11 Guide net | network 14 Guide net | network both-ends fixing means 16 Guidance net | networks 17 and 18 Fixing board 20 Shredding apparatus (Example 1)
21, 41 Cover 22, 42 Inlet 23, 43 Discharge port 24 Rotating blade (Example 1)
25 Rotating shafts 27 and 28 Rotation driving device 30 Rotating blade (Example 2)
33 Blade 34 Fixed plate 40 Shredding device (Example 2)
44, 45 Rotating blades 46, 47 Rotation drive device 50 Fish reef 53 Guide hose 54 Hidden hole 60 籠 (container for giant jellyfish strip)
62 Buoy 63 Connection hose 64 Connection means 65, 66 Locking means 70 Fishing boat 71 Winch 72 Rope 73 Receiver 75 Reception antenna 77 Ultrasonic transmitter / receiver 78 Ultrasonic reflector 79 Controller 80 Protected sea area

Claims (13)

A guide net for collecting giant jellyfish swimming on the ocean current, a guide net for guiding the giant jellyfish collected by the guide net to the entrance of the shredding device, and a shredding device for shredding the giant jellyfish And the shredding device comprises a rotating blade provided with a blade for cutting a giant jellyfish in a rotating body, and a water wheel that rotationally drives the rotating blade using the flow energy of ocean current. Giant jellyfish shredding system. 2. The rotary blade according to claim 1, wherein the blade tips of one or a plurality of blades are arranged in a rotational direction on a rotating cylinder having the same radius, and both ends of the blade are fixed by two side plates. The giant jellyfish shredding system described. The rotary blade has one or a plurality of blades oriented in the same rotational direction, and a set in which the blades are arranged in the radial direction of the rotary shaft is further arranged in the axial direction and fixed to the rotary shaft. The giant jellyfish shredding system according to claim 1. 4. The cutting apparatus according to claim 1, wherein the shredding device is configured to support the rotary blade so as to be rotatable around a horizontal axis, and the upstream blade tip rotates downward. The giant jellyfish shredding system described in 1. The shredding device is composed of a pair of rotary blades, each rotary blade is rotatably supported around a vertical axis, and the blade tips of the rotary blades rotate in directions opposite to each other, upstream The giant jellyfish shredding system according to any one of claims 1 to 3, wherein the blade edge of the blade is configured to rotate in an inward direction. 6. The giant jellyfish sculpture according to any one of claims 1 to 5, wherein the shredder is provided with the water turbine so that a rotational driving force is generated in the same direction as the rotational direction of the rotary blade. Disconnection system. The giant jellyfish shredding system according to any one of claims 1 to 6, wherein the water wheel comprises a Savonius type water wheel, a paddle type water wheel, or a cup type water wheel. The giant jellyfish shredding system according to any one of claims 1 to 7, wherein the shredding device is fixed horizontally at a position 5 to 30 meters deep from the sea surface. The giant jellyfish shredding system according to any one of claims 1 to 8, wherein the guide net is fixed in the sea by fixing means such as a float, a sink, and a rope. A fish reef is provided on the downstream side of the cutting device, and the fish collected on the fish reef is fed with a giant jellyfish strip using the giant jellyfish shredding system according to any one of claims 1 to 8. A fish reef system characterized by supply. A net is provided on the downstream side of the shredding device to prevent diffusion of a giant jellyfish strip downstream of the net, and the giant jellyfish and the giant jellyfish in a stationary net laid downstream of the net. The stationary net using the giant jellyfish shredding system according to any one of claims 1 to 8, characterized in that it is prevented from entering into the net. A feeding system that supplies a giant jellyfish fragment shredded using the giant jellyfish shredding system according to any one of claims 1 to 8 to a seabed inhabited by a coral, wherein the feeding system includes the giant jellyfish shredding system. A container for containing a jellyfish strip, a connecting means for connecting / separating the opening of the shredding device or the opening of the connecting hose connected to the discharging port and the opening of the container, and the container in the sea A feeding system comprising a transporting means for transporting to a predetermined position and a predetermined water depth, and a discharging means for releasing a giant jellyfish strip in the container toward a habitat area of the cocoon. The feeding system according to claim 12, wherein the habitat area of the salmon is an inhabited area of a grown female crab.

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