JP2012011924A - Jellyfish removing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a jellyfish removing device which can easily and efficiently suck, crush and dispose jellyfish.SOLUTION: The jellyfish removing device 1 includes a suction crushing device 2 having a flange part 26 which is a sucking port installed in the vicinity of water surface and sucking in the jellyfish floating in the vicinity of the water surface along with water, crushing and ejecting it and a driving motor 3 for driving the suction crushing device 2. In this case, a propeller 13 provided in the suction crushing device 2 for sucking in the jellyfish along with the water from the flange part 26, a first crushing blade 14 and second crushing blade 15 provided on the suction side of the propeller 13 for crushing the jellyfish that is sucked in by the suction crushing device 2 are provided on the same propulsion rotary shaft 11. The flange part 26, the first crushing blade 14, the second crushing blade 15, the propeller 13 and a flange part 27 which is the ejection port for ejecting the crushed jellyfish are provided in a straight line. The propulsion rotary shaft 11 is engaged and driven by the driving motor 3 and bevel gears 16, 19.

Description

  The present invention relates to a jellyfish removing device, for example, to a technique capable of crushing and removing a large amount of jellyfish that have entered a stationary net from the stationary net.

  Traditionally, jellyfish migrating in the sea have invaded stationary nets, causing fishery damage. The operation of removing a large amount of jellyfish that has entered the stationary net is performed manually, and it may take several hours, and the efficiency of the net lifting is greatly reduced. Furthermore, if the netting time becomes longer, the fish in the stationary net will be crushed by the jellyfish and damaged or suffocated and weakened.

  In order to solve such a problem, Patent Document 1 describes a jellyfish removing device that separates a jellyfish floating on the sea surface from a fish, and sucks and crushes it to remove it. The jellyfish remover is a pump-mounted float placed on the water surface where jellyfish is sucked, and the jellyfish that floats near the water surface when it is mounted on the pump-mounted float and driven to rotate, is crushed and sent out. A suction crushing pump, a turbine that is mounted on a pump mounting float together with the suction crushing pump, drives a suction crushing pump, a water supply pump that is installed on a ship or on the ground and driven by an engine, and a discharge port of the water pump is a turbine A water supply device for supplying pressurized water to the turbine, and a discharge that opens to a jellyfish disposal site where one end is connected to the discharge port of the suction crushing pump and the other end is crushed With a tube. By supplying water pressurized by the water pump to the turbine, the rotating shaft of the turbine is rotated to drive the suction crushing pump to suck, crush and send out the jellyfish.

  Patent Document 2 describes an apparatus for recovering marine organisms such as jellyfish contained in fresh water or seawater. Seawater is introduced into the waterway. A bubble generating device provided with bubble ejection holes is installed on the bottom surface of the water channel. Seawater is exposed to countless bubbles by the bubble generating device, and marine organisms such as jellyfish float on the water surface due to the buoyant force of bubbles. Sea creatures such as jellyfish that have surfaced on the surface of the water are recovered by a recovery device.

JP 2008-296110 A JP 2003-47955 A

  In the jellyfish removing apparatus described in Patent Document 1, the shaft center of the turbine is installed on the shaft center of the suction crushing pump, and the jellyfish is sucked together with the seawater from the suction port opened vertically below the suction crushing pump and crushed. Since it is discharged from a discharge port opened in a horizontal direction perpendicular to the direction of sucking seawater, the flow path resistance is large.

  In the apparatus described in Patent Document 2, since it is necessary to sunk and fix the bubble generating apparatus on the bottom of the stationary net, it takes time for preparation work when removing the jellyfish. In addition, in order to lift and remove jellyfish scattered in various places inside the stationary net by bubbles, it is necessary to generate bubbles over the entire area inside the stationary net, so a large number of bubble generators are installed at the bottom of the stationary net. Alternatively, the bubble generating device installed at the bottom of the stationary net is moved to generate bubbles over a wide range, which is troublesome.

  An object of the present invention is to solve such a problem, and to provide a jellyfish removing device that can suck and crush jellyfish easily and efficiently and discard it.

  In order to solve this problem, the present invention provides a suction crushing device that sucks and crushes jellyfish floating near the water surface with water and is discharged from the discharge port, and a rotation that drives the suction crushing device. In a jellyfish removing device equipped with a traction drive device, a propeller that is provided in a suction crushing device and sucks jellyfish together with water from a suction port, and a jellyfish sucked by a suction crushing device that is provided on the suction side of the propeller are provided on a rotating shaft. A crushing blade for crushing is provided, the rotating shaft is meshed with a rotary drive device and a power transmission direction changing device such as a bevel gear, and the suction port, the crushing blade, the propeller, and the discharge port are provided on a straight line, It can be transported by fishing boat.

  According to the first aspect of the present invention, the propeller that is provided in the suction crushing device on the rotating shaft and sucks the jellyfish together with water from the suction port, and the jellyfish that is provided on the suction side of the propeller and sucked by the suction crushing device is crushed. A crushing blade is provided, the rotating shaft is meshed by a rotary drive device and a power transmission direction changing device such as a bevel gear, and the suction port, the crushing blade, the propeller, and the discharge port are provided on a straight line. Because it can be transported, the flow resistance is smaller than the one that sucks jellyfish from vertically below and discharges it in the horizontal direction, and the jellyfish passes through the propeller in a state of being finely crushed by the crushing blade on the suction side. The resistance received from the jellyfish is reduced, and the jellyfish can be sucked, crushed and discarded easily and efficiently.

1 is a front view of a jellyfish removing device 1. FIG. It is A arrow directional view of the jellyfish removal apparatus 1. FIG. It is sectional drawing of the state which attached the drive motor 3 to the suction crushing apparatus 2. FIG. It is the figure which looked at the 1st crushing blade 14 from the axial center direction. It is the figure which looked at the 2nd crushing blade 15 from the axial center direction. 3 is a perspective view of a second crushing blade 15. FIG. 3 is a front view of a protective cover 6. FIG. 4 is a bottom view of the protective cover 6. FIG. It is an external view which shows the state which loaded the jellyfish removal apparatus 1 on the fishing boat. It is an external view which shows the state which installed the jellyfish removal apparatus 1 on the water surface.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a front view of the jellyfish removing device 1. FIG. 2 is a view of the jellyfish removing device 1 as viewed from the direction A. FIG. 3 is a cross-sectional view of the state in which the drive motor 3 is attached to the suction crushing device 2. FIG. 4 is a view of the first crushing blade 14 viewed from the axial direction. FIG. 5 is a view of the second crushing blade 15 as seen from the axial direction. FIG. 6 is a perspective view of the second crushing blade 15. FIG. 7 is a front view of the protective cover 6. FIG. 8 is a bottom view of the protective cover 6. FIG. 9 is an external view showing a state where the jellyfish removing device 1 is loaded on a fishing boat. FIG. 10 is an external view showing a state where the jellyfish removing device 1 is installed on the water surface.

  The jellyfish removing device 1 includes a suction crushing device 2 for sucking, crushing and discharging a jellyfish 41 floating near the water surface, a drive motor 3 for driving the suction crushing device 2, and a jellyfish crushed by the suction crushing device 2. A drain pipe 4 that carries 41 out of the net 44 together with seawater, a float 5 that holds the suction crushing device 2 near the water surface, a protective cover 6 that is attached to the suction side of the suction crushing device 2, And a water pipe 7 that ejects high-pressure water toward the jellyfish.

  The suction crushing device 2 includes a propulsion rotary shaft 11 with the axis 10 oriented in the vertical direction. The propulsion rotary shaft 11 is rotatably supported by the casing 12 in a watertight seal state. A propeller 13 made of a copper alloy is attached to the discharge-side end portion of the propulsion rotary shaft 11 and the suction-side end portion is attached. The first crushing blade 14 and the second crushing blade 15 for crushing the jellyfish 41 are attached. The first crushing blade 14 and the second crushing blade 15 are made of stainless steel. A bevel gear 16 is attached to the propulsion rotary shaft 11 provided with the propeller 13, the first crushing blade 14 and the second crushing blade 15 at both ends, and the driving force of the drive motor 3 is transmitted to the propulsion rotary shaft 11. .

  The propulsion rotary shaft 11 that is supported by the casing 12 and includes the propeller 13, the first crushing blade 14, and the second crushing blade 15 at both ends is accommodated in a duct 25. Flange portions 26 and 27 are formed at both end openings of the duct 25 formed of an aluminum plate and having a substantially cylindrical shape. The duct 25 is screwed to the shaft case 18 with the outer surface in contact with the flange portion 9 of the shaft case 18 described later.

  The drive motor 3 is attached to the end surface 8 of the shaft case 18 that accommodates the rotary shaft 17 with the rotary shaft 17 facing in the horizontal direction. A bevel gear 19 that meshes with the bevel gear 16 is attached to the end of the rotating shaft 17, and the shaft case 18 is fixed to the casing 12 in a watertight manner. The mounting surface of the flange portion 42 where the bearing 20 of the shaft case 18 is provided, the mounting surface 8 of the drive motor 3, and the mounting surface 43 attached to the casing 12 are sealed in a watertight manner by a packing (not shown). A hydraulic motor is used as the drive motor 3, and hydraulic pressure is sent by driving a hydraulic pump connected to the engine while the fishing boat 32 is stopped. The drive motor 3 and the shaft case 18 are covered with stainless steel covers 34 and 35 to prevent rusting.

The jellyfish 41 sucked into the suction crushing device 2 is crushed by the first crushing blade 14 and the second crushing blade 15. The first crushing blades 14 attached to the suction side of the propulsion rotary shaft 11 are arranged in the radial direction of the shaft center 10 at the end portions of the flat plate portion 21 provided at four positions with a 90 ° radial interval from the shaft center 10. Formed. The jellyfish 41 is roughly divided in advance in the front-rear direction with respect to the water flow by the first crushing blade 14.
The second crushing blade 15 provided on the discharge side of the first crushing blade 14 is welded to a first support portion 22 formed integrally with a bracket 24 that supports the first crushing blade 14. The first support portions 22 are provided at eight locations radially spaced from the axis 10 by 45 °, and the second crushing blades 15 are arranged in four locations in the radial direction of the first support portions 22. A total of 32 spots are welded, and the tip of the cylinder is a pencil shape formed at an acute angle. In addition, the 2nd crushing blade 15 is welded in the state inclined somewhat irregularly from the circumferential direction of the axial center 10. FIG. On the discharge side of the first support portion 22, for example, second support portions 23 are provided with an interval of, for example, about 40 mm, and the wire diameter is between the first support portion 22 and the second support portion 23. A plurality of different round bars 37 are welded and fixed in a state of being slightly inclined irregularly from the direction of the axis 10.

  A protective cover 6 made of stainless steel is attached to the suction side of the duct 25. The protective cover 6 has a cylindrical shape whose diameter is increased toward the water on the suction side. An inspection port 30 is provided in the suction side end surface 29, and the state of the first crushing blade 14 and the second crushing blade 15 installed inside the duct 25 can be confirmed by opening the inspection port 30. . A flange portion 28 is provided on the discharge side end face, and is connected to the duct 25 via the flange portion 28. The suction-side end surface 29 and the discharge-side end surface flange portion 28 are connected by a plurality of round bars 38 that are welded and fixed to the side surfaces. A plurality of round bars 39 are also welded in the circumferential direction of the side surface to form a rectangular mesh on the side surface of the protective cover 6.

  Around the suction side opening of the duct 25, two rugby ball-like floats 5 are installed so as to sandwich the duct 25, and give buoyancy to the jellyfish removing device 1. The installation position of the float 5 is changed by a hydraulic cylinder or jack (not shown), and the installation depth of the jellyfish removing device 1 is adjusted.

A stainless steel water pipe 7 is wound around the outside of the round bars 38 and 39 forming the side surface of the protective cover 6, and high pressure water is jetted toward the inside of the protective cover 6 on the surface of the water pipe 7. For this reason, unillustrated ejection holes are provided at a plurality of locations. The water ejected from the water supply pipe 7 is pressurized to, for example, 50 kg / cm ² by a pump driven by the engine.

  A drainage hose 4 (for example, Kuraray's clean flexible NW type nominal diameter 300) is connected to the discharge-side flange portion 27 of the duct 25 in order to discard the jellyfish 41 crushed by the suction crushing apparatus 2 together with seawater to the outside of the stationary net. . Kuraray's Clean Flexible NW type is made of polypropylene, does not generate rust, is lightweight, has excellent elasticity and flexibility, and can be stored with a length reduced to about 1/3. The height when the apparatus 1 is stored can be 1.5 m or less, which is advantageous for storage and transportation. An attached flange joint is screwed to the discharge side flange portion 27 of the duct 25, and the drainage hose 4 is inserted into the flange joint and fixed with a hose band.

  The jellyfish removing device 1 has a weight of about 80 kg including the float 5, the drainage hose 4 and the hose connected to the drive motor 3, and is loaded on a small fishing boat 32 on which a crane as shown in FIG. 9 is mounted. It can be transported. An eyebolt 33 is attached to the duct 25, and the jellyfish removing device 1 can be stored and transported in a posture in which it is lifted up in a posture to be installed on the water surface, the end surface 29 of the protective cover 6 is grounded, and installed in the water surface. .

  Here, the operation of the jellyfish removing apparatus 1 will be described. The jellyfish removing device 1 is transported to the place where the stationary net is installed on the fishing boat 32, and then the crane hook is hung on the eyebolt 33 of the duct 25 and is lowered from the ship and installed on the water surface. When the float 5 installed around the duct 25 is not in an appropriate position, the depth of the jellyfish removing apparatus 1 is adjusted by changing the position of the float 5 by a hydraulic cylinder or a jack (not shown).

  When hydraulic pressure is supplied to the drive motor 3, the propulsion rotary shaft 11 of the suction crushing device 2 rotates. Seawater is sucked into the protective cover 6 by the rotation of the propeller 13 provided on the discharge side of the propulsion rotary shaft 11. At the same time, the jellyfish 41 floating on the seawater is also sucked into the protective cover 6. The jellyfish 41 sucked into the inside of the protective cover 6 is exposed to high-pressure water ejected from the water pipe 7 into the protective cover 6 before being sucked into the suction crushing device 2. Since the jellyfish 41 has a softer peripheral edge than the center, the peripheral edge leaving the trunk is crushed by water pressure and sent to the suction crushing apparatus 2.

  The jellyfish 41 sucked into the duct 25 is divided by the first crushing blade 14, and the first crushing blade 14 is radially arranged at 90 ° intervals about the axis 10 of the propulsion rotating shaft 11. The jellyfish 41 is sent to the second crushing blade in a state of being crushed to an appropriate size including the central portion. If the number of crushing blades 14 is less than four, the jellyfish 41 passes through a relatively large lump or passes without crushing. If more than four crushing blades 14 are installed, the resistance of the first crushing blade 14 increases when the propeller 13 sucks seawater, or the jellyfish 41 stays on the suction side of the first crushing blade 14. It will be.

  The jellyfish 41 crushed to an appropriate size by the first crushing blade 14 is sent to the second crushing blade 15. A plurality of pencil-shaped second crushing blades 15 having a cylindrical tip formed at an acute angle are provided at a plurality of locations in an irregularly inclined state from the circumferential direction of the axis 10. A plurality of round bars 37 having different wire diameters adjacent to the discharge side are provided in an irregularly inclined state with respect to the direction of the axis 10 so that they are crushed to an appropriate size by the first crushing blade 14. When the jellyfish 41 passes through the second crushing blade 15, the second crushing blade 15 pierces the jellyfish 41 and crushes it finely. Since the tip of the second crushing blade 15 is pointed like a pencil and is irregularly inclined, the jellyfish 41 can be pierced reliably without escaping to the discharge side. The jellyfish 41 crushed by the second crushing blade 15 is further finely crushed by a plurality of round bars 37 provided on the discharge side.

  The first support portion 22 and the second support portion 23 are provided in eight radial positions. However, if the first support portion 22 and the second support portion 23 are fewer than eight places, the jellyfish 41 is pierced by the second crushing blade 15. If the first support portion 22 and the second support portion 23 are installed more than eight places, the resistance of the first support portion 22 and the second support portion 23 when the seawater is sucked by the propeller 13 The jellyfish 41 crushed by the first crushing blade 14 stays on the suction side of the first support portion 22.

  Furthermore, since the substantially cylindrical duct 25 for sucking seawater sucks seawater from below vertically and discharges it straight upward, the flow resistance is higher than that sucked from vertically below and discharged horizontally. Since the first crushing blade 14 and the second crushing blade 15 are small and installed on the suction side and the propeller 13 is installed on the discharge side, the jellyfish 41 passes through the propeller 13 in a finely crushed state. Therefore, the resistance received by the propeller 13 is reduced.

  In this way, the suction crushing device 2 that drives the suction crushing device 2 and the suction crushing device 2 that sucks and crushes the jellyfish 41 floating near the water surface together with the water by the flange portion 26 that is a suction port is installed near the water surface. In the jellyfish removing device 1 provided with a drive motor 3 that is a rotary drive device, a propeller 13 that is provided in the suction crushing device 2 and sucks a jellyfish 41 together with water from a flange portion 26 on a propulsion rotary shaft 11 that is a rotary shaft; The first crushing blade 14 and the second crushing blade 15 crushing blade provided on the suction side of the propeller 13 for crushing the jellyfish 41 sucked by the suction crushing device 2 are provided, and the propulsion rotary shaft 11 is driven The motor 3 and the bevel gears 16 and 19 are engaged with each other by a power transmission direction changing device, and the flange portion 26, the first crushing blade 14, the second crushing blade 15, and the propeller 13 Since it is provided in a straight line with the flange portion 27 that is an outlet and can be transported by the fishing boat 32, the flow resistance is smaller than that in which the jellyfish 41 is sucked from the vertically lower side and discharged in the horizontal direction. Since the propeller 13 passes through the propeller 13 while being finely crushed by the first crushing blade 14 and the second crushing blade 15 on the suction side, the resistance that the propeller 13 receives from the jellyfish 41 is reduced, and the jellyfish 41 is easily and efficiently attached. Can be aspirated, crushed and discarded.

DESCRIPTION OF SYMBOLS 1 Jellyfish removal apparatus 2 Suction crushing apparatus 3 Drive motor 4 Drainage hose 5 Float 6 Protective cover 7 Water supply pipe 8,29 End surface
DESCRIPTION OF SYMBOLS 9 Shaft part 10 Axis center 11 Propulsion rotary shaft 12 Casing 13 Propeller 14 1st crushing blade 15 2nd crushing blade 16, 19 Bevel gear 17 Rotating shaft 18 Shaft case 20 Bearing 21 Flat plate part 22 Support rod 24 Bracket 25 Duct 26 , 27, 28, 42 Flange 30 Inspection port 31 Connecting rod 32 Fishing boat 33 Eye bolt 34, 35 Cover 37, 38, 39 Round bar 40 Suction side opening 41 Jellyfish 43 Mounting surface 44 Net

Claims (1)

In a jellyfish removing device comprising a suction crushing device that sucks and crushes jellyfish floating near the water surface together with water, the suction port is installed near the water surface, and discharges it from the discharge port, and a rotary drive device that drives the suction crushing device ,
The rotating shaft is provided with a propeller that is provided in the suction crushing device and sucks the jellyfish together with water from the suction port, and a crushing blade that is provided on the suction side of the propeller and crushes the jellyfish sucked by the suction crushing device, and the rotating shaft Is a jellyfish characterized in that it is meshed with a rotary drive device and a power transmission direction changing device such as a bevel gear, and the suction port, the crushing blade, the propeller and the discharge port are provided in a straight line and can be transported by a fishing boat. Removal device.

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