JP7076752B2 - Marine organism extermination device - Google Patents

Description

The present invention relates to a device for exterminating pests in the sea such as diadema setosum and sea urchin.

When diadema setosum, sea urchin, etc. overgrow on the seabed, seaweed disappears and the ecosystem changes drastically, causing the so-called rocky-shore dense. In order to maintain the ecosystem, it is necessary to exterminate such pests. To exterminate diadema setosum and sea urchins, they are crushed in the sea with a hammer or the like, or collected with a catching tool with a hooked tip, transported to land, and then disposed of.

In addition, Patent Document 1 discloses a seafloor organism extermination device, which sucks pests from the seabed together with seawater, stores them in a sedimentation tank, and separates the pests from the seawater.
Further, Patent Document 2 proposes a device and a method for exterminating pests using compressed air.

Japanese Unexamined Patent Publication No. 2011-250767 Japanese Unexamined Patent Publication No. 2016-112016

However, the conventional method has a problem that the following solution is desired.
A lot of labor is required for the method of storing harmful organisms in the sea in a bag or the like, pulling them up on land and disposing of them, or the method of crushing them with a hammer or the like. In other words, the method of lifting and disposing of pests on land requires the work of lifting the pests packed in the bag on board, the work of transporting them to land, and the work of disposing of them on land. Further, in the method of crushing with a hammer or the like, the operator has to swing the hammer down while receiving the resistance of water while floating in the sea, which is a heavy burden and requires skill. Furthermore, the organisms to be removed often live in narrow gaps such as reefs, and the work efficiency is not good.

On the other hand, when a suction device as described in Patent Document 1 is used, a large amount of organisms other than those to be exterminated may be sucked, which may adversely affect the ecology.
Further, the method using the device described in Patent Document 2 enables efficient work in the sea, but one-handed operation of piercing the tip of the device into marine organisms and an operation of ejecting compressed air. It is necessary to do it in the sea, and it may be a burden on the worker who operates in the sea.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a marine organism extermination device capable of efficiently exterminating harmful marine organisms.

In order to solve the above problems, the invention according to claim 1 comprises a main body portion which is composed of a tubular member and has an air chamber to which compressed air is supplied, and an air supply port for supplying compressed air to the air chamber. An discharge control valve provided at the air discharge port of the air chamber, which closes the air discharge port by the air pressure in the air chamber and controls the discharge of air from the air discharge port, and from the air discharge port. An air outlet that injects the discharged air, a tip member that is supported in the direction in which air is ejected from the air outlet and has a sharp tip that can pierce the body of a marine organism, and the main body. On the other hand, an operation transmission member that supports the tip member so as to be retractable and opens the discharge control valve in conjunction with the tip member when it is abutted against an aquatic organism and retracts with respect to the main body portion. Provided is an marine organism extermination device having.

In this marine organism extermination device, an operator can hold the main body and appoint the tip member against a pest in the sea and push the tip member into the tissue of the pest. At this time, the tip member retracts with respect to the main body due to the pushing force, and the discharge control valve is opened. When the discharge control valve is opened, the compressed air in the air chamber is discharged from the air discharge port and ejected from the air outlet. The compressed air that is ejected is blown onto the marine organisms from behind the tip member, and acts to expand the circumference of the part where the tip member is pierced to exterminate pests. Then, when the exterminated pests are separated from the tip member, the discharge control valve is closed by the air pressure in the air chamber, and the tip member is restored to the original position.

The invention according to claim 2 is the marine organism extermination device according to claim 1, wherein the motion transmission member has a cylindrical body portion in which the tip member is fixed to one end protruding from the air ejection port. It shall have a rod-shaped member supported so as to be able to reciprocate along the axial direction of the.

In this marine organism extermination device, the tip member can be reciprocated with a simple structure to the main body, and can be easily linked with the operation of the discharge control valve.

The invention according to claim 3 is the marine organism extermination device according to claim 1 or 2, wherein the cross section of the tip member gradually expands from a sharp tip toward the rear, and the rear portion thereof is rearward. It shall have an inclined surface that reduces the cross section toward it.

In this marine organism extermination device, compressed air ejected from the rear of the tip member flows in the radial direction along an inclined surface provided at the rear portion of the tip member. As a result, a radial force acts around the tip member pierced by marine organisms. As a result, the marine organisms can be exterminated so as to be cracked, and the marine organisms are easily separated from the tip member.

As described above, the marine organism extermination apparatus of the present invention can easily and efficiently exterminate pests in the sea.

It is a schematic block diagram which shows the state which connected the marine organism extermination apparatus which is one Embodiment of this invention with the tank which supplies compressed air. It is sectional drawing of the marine organism extermination apparatus shown in FIG. It is a schematic diagram which shows the use state of the marine organism extermination apparatus shown in FIG. It is a schematic diagram which shows the state when the pest is exterminated by the marine organism extermination apparatus shown in FIG. It is sectional drawing which shows the marine organism extermination apparatus which is another embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic configuration diagram showing a state in which a marine organism extermination device according to an embodiment of the present invention is connected to an air tank that supplies compressed air. Further, FIG. 2 is a cross-sectional view of the marine organism extermination device.
In this embodiment, the marine organism extermination device 1 is connected to the air tank 2 for diving used in scuba diving and the like.

The marine organism extermination device 1 has an air chamber 12 in which the main body 11 is made of a metal cylindrical member and compressed air is supplied to the inside. An air supply port 13 for supplying compressed air to the air chamber is provided in the rear portion of the main body 11, and a hose 14 for supplying compressed air from the air tank 2 is connected to the air supply port 13. On the other hand, the inner diameter of the front portion of the main body portion 11 is gradually reduced, and an air outlet 15 for ejecting compressed air in the axial direction of the main body portion 11 is provided. A partition wall 16 is formed between the air ejection port 15 and the air supply port 13, an air chamber 12 is behind the partition wall 16, and an air discharge port 17 is provided in the partition wall 16. An discharge control valve 18 is in contact with the air discharge port 17 from the air chamber side, and the discharge control valve 18 can close the air discharge port 17 by the air pressure in the air chamber 12. Further, the operation of the discharge control valve 18 controls the air discharged from the air chamber 12 through the air discharge port 17. The discharge control valve 18 is connected to a rod-shaped motion transmission member 19 that passes through the air discharge port 17 and extends forward from the partition wall in the axial direction of the main body 11. The operation transmission member 19 penetrates the air outlet 15 and its tip portion protrudes from the air outlet. The tip member 20 is attached to the tip of the motion transmission member 19. The tip member 20 has a tip portion sharpened in the direction of air ejection, and the tip portion can be pierced into the body of a marine organism.

The main body 11 includes two steel pipe members 21 and 22, a cylindrical joint member 23 connecting them, and two diameter-reduced pipe members 24 once connected to the steel pipe member and whose other end is reduced in diameter. , 25 and. Male threads are formed on the outer peripheral surfaces of the ends of the two steel pipe members 21 and 22, and they are connected by twisting with female threads formed on the joint member 23. Further, at both ends of the two connected steel pipe members 21 and 22, the diameter-reduced pipe members 24 and 25 are connected by twisting with a male screw on the outer peripheral surface.

The diameter-reduced tip of the diameter-reduced pipe member 24 twisted to the tip side of the steel pipe members 21 and 22 to which the two are connected is the air outlet 15. Further, a curved pipe 26 is connected to the diameter-reduced end portion of the diameter-reduced pipe member 25 twisted to the rear end side of the steel pipe members 21 and 22 to which the two are connected. A hose 14 is connected to the curved pipe 26, and compressed air is supplied from the air tank 2 to the air chamber 12 of the main body through the hose 14.

In the portion where the steel pipe members 21 and 22 are connected by the joint member 23, the steel pipe members 21 and 22 are twisted with the joint member 23 in a state where the circular steel plate 16 is sandwiched between the two steel pipe members 21 and 22. Together, the steel plates 16 form a partition. The steel plate 16 is provided with a circular hole in the center to serve as an air discharge port 17. An elastic member, for example, a synthetic rubber plate 27 having a predetermined thickness is attached to the surface of the steel plate 16 on the air chamber side.

The discharge control valve 18 is made of a metal sphere, and the air discharge port 17 can be closed by being pressed against a synthetic rubber plate 27 attached to the steel plate 16 from the air chamber 12 side. be. An operation transmission member 19 is connected to the discharge control valve 18 on the front side, and a rear support member 28 is fixed on the rear side. Then, together with the motion transmission member 19 and the rear support member 28, the main body portion 11 is reciprocally supported in the axial direction.

The rear support member 28 includes a rod-shaped member 28a arranged in the axial direction of the main body portion 11 and a circular plate 28b protruding from the rod-shaped member 28a. The circular plate 28b has a diameter slightly smaller than the inner diameter of the steel pipe members 21 and 22 forming the main body 11, and guides the reciprocating movement of the rod-shaped member 28a in the axial direction along the inner peripheral surface of the steel pipe member 22. Is.

The motion transmission member 19 is a rod-shaped member supported in the axial direction of the main body 11, is inserted into an air discharge port 17, and further protrudes from an air ejection port 15. The tip member 20 is fixed to the tip of the motion transmission member 19.

The tip member 20 is a member made of metal, and the front portion 20a has a conical shape. Further, the diameter of the rear portion 20b fixed to the motion transmission member 19 is reduced toward the motion transmission member 19 at a steeper angle than the front cone. Since the tip member 20 is connected to the discharge control valve 18 via the operation transmission member 19, the discharge control valve 19 also moves to the rear side when the tip member 20 is pushed to the rear side of the main body portion 11. , The air discharge port 17 is opened.

The air tank 2 that supplies compressed air to the air chamber 12 formed in the main body 11 via the hose 14 is a decompression device that decompresses the filled high-pressure air to a pressure suitable for respiration as shown in FIG. (Regulator) is provided, and this decompression device has a first stage decompression unit 41 (first stage) and a second stage decompression unit 42 (second stage). The first-stage decompression unit 41 supplies air into a breathing hose 43 including a second-stage decompression unit 42, a spare breathing hose 44, a hose connected to a buoyancy compensator (not shown), and a dry suit. The hose 45, the hose 46 connected to the residual pressure gauge, etc. can be connected. The hose 14 that supplies compressed air to the air chamber can be connected to the first stage decompression unit 41 of the decompression device as one of these hoses. The first-stage decompression unit 41 reduces the pressure in the air tank 2 which is 150 to 200 atm to about 8 to 11 atm, and the hose 14 is decompressed by the first-stage decompression unit 41 from 8 to 11. Compressed air of about atmospheric pressure is supplied.

Next, a method for exterminating Diadema setosum using the marine organism extermination device 1 will be described.
The extermination of diadema setosum using this marine organism extermination device 1 is performed by a worker diving, and as shown in FIG. 3, the rear portion of the main body 11 is grasped and abutted against the diadema setosum on the seabed. The air tank 2 that supplies compressed air to the main body 11 may use an air tank used by the operator for breathing, but is separate from the air tank for breathing in consideration of the safety and efficiency of the operator. It is desirable to prepare a tank of. The air tank 2 may be one in which the worker brings a diving tank into the sea, or the hose 14 may be long and mounted on a ship assisting the worker.

The marine organism extermination device 1 pushes the sharp tip member 20 into the diadema setosum 4 as shown in FIG. 3, and pushes the tip member 20 into the diadema setosum 4 as shown in FIG. As a result, the outer shell of the diadema setosum 4 is destroyed, and a part of the tip member 20 invades the body of the diadema setosum 4. By the force that presses the main body 11 of the marine organism extermination device against the diadema setosum 4, the tip member 20 and the motion transmission member 19 that supports the tip member 20 are pushed backward, that is, into the main body, and are connected to the rear of the motion transmission member 19. The discharged control valve 18 is moved backward. Along with this, the air discharge port 17 is opened as shown in FIG. 2 (b), and compressed air is discharged from the air chamber 12 to the tip end side of the main body 11 as shown by the arrow A in FIG. 2 (b). To. Then, the discharged compressed air is injected from the air outlet 15. The jetted air flowed in the radial direction along the inclined surface behind the tip member 20 as shown by the arrow B in FIG. 2B or the arrow C in FIG. 4, and the tip member 20 was thrust into the jet. It is sprayed around the destroyed part of the outer shell of Gangaze 4. This air flow acts to split the outer shell of the diadema setosum 4, and the diadema setosum 4 is surely exterminated. Further, when the outer shell of the diadema setosum 4 is destroyed and separated from the tip member 20, the discharge control valve 18 is pressed against the partition wall side by the air pressure in the air chamber, and the discharge control valve 18 is closed. This returns to a state where the next diadema can be exterminated.

By using such an underwater organism extermination device 1, when exterminating diadema setosum, overgrown sea urchin, etc., the diving worker grasps the main body 11 with one hand and maintains the balance with the other hand. It is possible to work in a stable state while touching the rocks on the seabed. Further, the gripped main body portion 11 can be exterminated only by pressing the gripped main body portion 11 against the diadema setosum or the sea urchin, and the work efficiency can be improved and the operator's fatigue can be suppressed.

FIG. 5 is a cross-sectional view showing another embodiment of the marine organism extermination apparatus according to the present invention.
This marine organism extermination device 3 has the same main body portion 11, partition wall 16, discharge control valve 18, tip member 20, and rear support member 28, which are the same as those shown in FIGS. 1 and 2, but the tip side contraction. An extension pipe 31 is connected to the tip of the diameter pipe member 24. The motion transmission member 32 is longer than that shown in FIG. 2 corresponding to the length of the extension pipe 31. The tip member 20 is fixed to the tip of the motion transmission member 32 protruding from the tip of the extension pipe 31 which is the air ejection port 33, and is rearward to the extension pipe 31 and the main body 11 together with the motion transmission member 32. Relative displacement is allowed.
In such an underwater organism extermination device 3, an extension pipe 31 having a smaller outer shape than the main body 11 can be inserted into a crack in a rock on the seabed. Therefore, it is possible to exterminate diadema setosum and sea urchins that live in the depths of rock crevices.

The marine organism extermination devices 1 and 3 described above are embodiments of the present invention, and are not limited thereto. For example, the length and inner diameter of the steel pipe members 21 and 22 of the main body 11 can be appropriately set. It is assumed that a plurality of these steel pipe members 21 and 22 are connected by a joint, and the length can be appropriately adjusted. Further, as the connection structure between the reduced diameter pipe member 25 and the air tank, a straight pipe may be used instead of the curved pipe 26. Further, the connection structure can be appropriately designed, such as one in which a connector for connecting a hose is directly attached to the diameter reduction tube member. In addition, the support mode of the operation transmission member, the shape and structure of the discharge control valve, the connection structure between the operation transmission member and the discharge control valve, and the like can be appropriately modified within the scope of the present invention. It is a thing. In addition, the shape and dimensions of each member can be appropriately designed. On the other hand, the marine organisms to be exterminated are not limited to the above-mentioned sea urchins and diadema setosum, and can be applied to other marine organisms that can be exterminated by using the apparatus according to the present invention.

1: Marine organism extermination device, 2: Air tank, 3: Marine organism extermination device, 4: Diadema setosum,
11: Main body, 12: Air chamber, 13: Air supply port, 14: Hose, 15: Air outlet, 16: Bulk partition (steel plate), 17: Air discharge port, 18: Discharge control valve, 19: Operation transmission Member, 20: Tip member, 21: Steel pipe member, 22: Steel pipe member, 23: Joint member, 24: Reduced diameter pipe member, 25: Reduced diameter pipe member, 26: Curved pipe, 27: Synthetic rubber plate, 28: Rear Support member, 28a: rod-shaped member, 28b: circular plate,
31: Extension pipe, 32: Motion transmission member, 33 :: Air outlet,
41: 1st stage decompression unit, 42: 2nd stage decompression unit, 43: breathing hose, 44: spare breathing hose, 45: hose to supply air into the dry suit, 46: connect to residual pressure gauge, etc. hose

Claims (3)

The main body, which consists of a tubular member and has an air chamber to which compressed air is supplied,
An air supply port that supplies compressed air to the air chamber,
A discharge control valve provided at the air discharge port of the air chamber, which closes the air discharge port by the air pressure in the air chamber, and controls the discharge of air from the air discharge port, and is discharged from the air discharge port. An air outlet that injects air and
A tip member having a pointed tip that is supported in the direction in which air is ejected from the air outlet and can pierce the body of a marine organism.
Operation transmission that supports the tip member so that it can be retracted with respect to the main body, and opens the discharge control valve in conjunction with the tip member when it is abutted against a marine organism and retracts with respect to the main body. A marine organism extermination device characterized by having a member and. The motion transmission member has a rod-shaped member in which the tip member is fixed to one end protruding from the air ejection port and is supported so as to be able to reciprocate along the axial direction of the main body portion in a cylindrical shape. The marine organism extermination apparatus according to claim 1. 1. 2. The marine organism extermination device according to 2.

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