Feeding device, and floating body equipped with a feeding device

Abstract

The solid feed contained in the feed storage tank can be released into the water without the use of a mixer. [Solution] A feeding device 1 for releasing solid feed E contained in a feed storage tank 110 into water, comprising: a feeding pipe 10 which is a cylindrical member connected to the discharge port 112 of the feed storage tank 110 and has an intake port for drawing in solid feed E that is pressurized to be delivered by gas from the discharge port 112, bent portions 11, 12 that are bent to guide the solid feed E drawn in by the intake port toward the water surface, and an outlet for discharging the solid feed that has passed through the bent portions 11, 12, and gas vents are provided in the bent portions 11, 12 to restrict the passage of solid feed E and allow gas to pass through; and a first liquid injection hose 20 which is connected downstream of the gas vents and injects liquid into the inside of the feeding pipe 10.

Description

Technical Field

[0001] The present invention relates to a feeding device for feeding fish in water and a floating body provided with the feeding device.

Background Art

[0002] Patent Documents 1 to 3 describe various feeding devices for feeding fish in a fish basket.

[0003] Patent Document 1 (see particularly FIGS. 1, 2, and

[0008] -

[0026] ) describes a feeding device for feeding a feeding target in a sunken fish basket (in Patent Document 1, the "deep-sea floating type hand-held device 100" corresponds to this), which includes a pump for pumping water ("pump 241"), a food delivery unit for delivering food to be fed to the feeding target (the food supply path from the "feed storage tank 210" to the "mixer 240" corresponds to this), a confluence section where the water pumped by the pump and the food delivered by the food delivery unit merge ("mixer 240"), and a feeding hose ("feeding hose 260") that communicates with the confluence section and delivers the mixture of the water and the food that have merged at the confluence section.

[0004] Patent Document 2 describes a feeding machine in which "when the drum 36 rotates to take in food into a chamber and comes to a place where seawater is injected, there is a discharge port 44 at the lower part of the drum, so that the seawater and the food do not flow (without backflow) toward the seawater supply hose 46, and the seawater containing food is discharged from the discharge port 44" (see paragraph

[0018] of Patent Document 2).

[0005] Patent Document 3 discloses: (1) A feeding method for farmed fish, characterized in that the feed is fed in such a way that it sinks in water at a speed faster than its natural sinking speed. (2) The feeding method of (1), characterized in that the feed fed into the water is pressurized and discharged so that it sinks in a columnar shape to a depth of at least about 2 m before its sinking speed slows down to its natural sinking speed in the water. (3) The feeding method of (1) or (2), wherein the method of feeding in such a way that the feed sinks in water at a speed faster than its natural sinking speed is characterized in that the tip of the feeding hose is placed in the water, the feed is mixed with water, and the mixture is discharged under pressure with a pump. (4) The feeding method of (3), characterized in that the feed and water are supplied to a mixing tank, the feed is pumped up together with the water, and the mixture is discharged under pressure. (5) The feeding method of (3), characterized in that the feed is placed in a basket-shaped container, the container is placed in the water, the feed is pumped up together with the water, and the mixture is discharged under pressure. (6) Any of the feeding methods of (3) to (5), wherein the pump is a tube pump. [Prior art documents] [Patent Documents]

[0006] [Patent Document 1] Korean Registered Utility Model Publication No. 20-0454434 [Patent Document 2] Japanese Patent Publication No. 2004-121213 [Patent Document 3] International Publication No. 2009 / 119541 [Overview of the project] [Problems that the invention aims to solve]

[0007] The feeding device disclosed in Patent Document 1 requires a mixer 240 for mixing water and feed. The feeding machine disclosed in Patent Document 2 requires a rotating drum 36 into which seawater and feed are injected. Furthermore, the feeding method disclosed in Patent Document 3 requires a basket-shaped container for feed, which is then placed in water, and the feed is pumped up together with water and discharged under pressure. In other words, all of the technologies described in Patent Documents 1 to 3 require a mixer (mixer 240, rotating drum 36, basket-shaped container), resulting in a complex device configuration.

[0008] Therefore, the present disclosure aims to provide a feeding device that can release solid feed contained in a feed storage tank into water without using a mixer, and a floating body equipped with the feeding device. [Means for solving the problem]

[0009] The feeding device of this disclosure is a feeding device for releasing solid feed contained in a feed storage tank into water, A feeding pipe comprising a cylindrical member, connected to a discharge port connected to the feed storage tank, having an intake port for drawing in the solid feed that is pressurized and delivered from the discharge port, a bent portion that is bent to guide the solid feed drawn in by the intake port toward the water surface, and a discharge port for discharging the solid feed that has passed through the bent portion, wherein the bent portion is provided with a gas vent that restricts the passage of the solid feed and allows gas to pass through, The system includes a first liquid injection hose connected to a first position downstream of the gas venting section, which injects liquid into the inside of the feeding pipe.

[0010] The feeding device described above further comprises a second liquid injection hose connected to a second position downstream of the first position, for injecting liquid into the feeding pipe.

[0011] In the feeding device described above, the first liquid injection hose is attached to the feeding pipe such that the solid feed passing through the feeding pipe is slowed down by the injected liquid.

[0012] In the feeding device described above, the second liquid injection hose is attached to the feeding pipe so that the solid feed passing through the feeding pipe is accelerated by the injected liquid.

[0013] The feeding device described above further comprises a pressure relief pipe, which is a cylindrical member and is attached to the outer surface of the feeding pipe such that one end covers the gas vent portion.

[0014] The feeding device described above further comprises a suspended hopper that is suspended on the discharge side of the feeding pipe and temporarily holds and delivers the solid feed discharged from the discharge port.

[0015] The floating body of this disclosure includes the feeding device described above. [Effects of the Invention]

[0016] According to this disclosure, solid feed contained in a feed storage tank can be released into water without the use of a mixer. Furthermore, by forming a gas vent in the feeding pipe, it is possible to control the speed of the gas-pressurized solid feed (deceleration of the solid feed by releasing pressure). This reduces the impact of the solid feed on the inner wall of the feeding pipe, thereby suppressing the crushing of the solid feed. In addition, by injecting liquid into the feeding pipe using the first liquid injection hose, the solid feed passing through the feeding pipe can be further decelerated. This further suppresses the crushing of the solid feed. [Brief explanation of the drawing]

[0017] [Figure 1] This diagram shows a boat equipped with a feeding device and a fish pen. [Figure 2] This diagram shows a raft with a feeding device and a fish farm. [Figure 3] This is a plan view showing the feed storage tank of a ship. [Figure 4]This is a diagram showing the overall configuration of the feeding device. [Figure 5] This is a diagram showing the feeding pipe, suspension hopper, and vent pipe of the feeding device. [Figure 6] This is a diagram showing the disassembled state of the feeding pipe, suspension hopper, and vent pipe of the feeding device. [Figure 7] This is the A-A cross-sectional view of FIG. 5. [Figure 8] This is the B-B cross-sectional view of FIG. 5. [Figure 9] This is a diagram showing the feeding pipe, suspension hopper, and vent pipe of the feeding device. [Figure 10] This is a diagram showing the state where the diffusion nozzle, hose, etc. are suspended by the ship's crane and placed on the deck.

Embodiments for Carrying out the Invention

[0018] Hereinafter, various embodiments will be described with reference to the accompanying drawings. In the drawings, the same reference numerals are assigned to common components. Also, note that some components shown in one drawing may be omitted in another drawing for the sake of convenience of explanation. Furthermore, note that the attached drawings are not necessarily drawn to an exact scale.

[0019] (Floating body (ship 100 or raft 300)) As shown in FIG. 1, the feeding device 1 of the present embodiment is mounted on a floating body (for example, ship 100). That is, ship 100 is a ship 100 with a feeding device. Ship 100 approaches the fish cage 200, anchors, and uses the feeding device 1 to release the solid feed E to the fish F in the fish cage 200.

[0020] As shown in Figure 2, the floating structure may be a raft 300. Depending on the environment in which the fish farm 200 is installed, the raft 300 on which the feeding device 1 is mounted may be installed close to the fish farm 200. For example, if the fish farm 200 is installed in an environment with strong waves, as shown in Figure 1, the boat 100 may be moored near the fish farm 200 and solid feed E may be released from the feeding device 1 into the fish farm 200. On the other hand, if the fish farm 200 is installed in an environment with calm waves, as shown in Figure 2, the raft 300 may be installed near the fish farm 200 and solid feed E may be released from the feeding device 1 into the fish farm 200.

[0021] The fish tank 200 may be, for example, a submersible fish tank in which the upper surface of the fish tank 200 is submerged below the water surface, or it may be a non-submersible fish tank. Alternatively, the fish tank 200 may be a floating and submersible fish tank that is capable of both sinking and floating.

[0022] As shown in Figures 3 and 4, the ship 100 is equipped with a feed storage tank 110 for storing solid feed E. There may be one feed storage tank 110 or two or more. Different types of feed may be stored in the feed storage tank 110, or the same type of feed may be stored in the feed storage tank 110. The feed storage tanks 110 may be the same shape or different shapes. The volumes of the feed storage tanks 110 may be the same or different.

[0023] The solid feed E contained in the feed container 110 is a solid feed, and its composition may be appropriately adjusted depending on the species of fish being fed. The feed container 110 is shaped like a mortar and has a sloping bottom. The solid feed E placed in the feed container 110 falls due to its own weight due to the sloping bottom. A feed transport pipe 113 is laid below the feed container 110 to transport the fallen solid feed E. A pump (not shown) is connected to the feed transport pipe 113 for pneumatically transporting the solid feed E contained in the feed container 110. The pump transports the solid feed E that has fallen from the feed container 110 into the feed transport pipe 113 by pneumatic transport. The placement of the pump is not limited. The end of the feed transport pipe 113 is connected to a discharge port 112 provided on the deck of the ship 100, and the solid feed E that has been pneumatically transported within the feed transport pipe 113 is discharged from the discharge port 112. In this illustration, a feed transport pipe 113 is connected to one discharge port 112 located on the deck of the ship 100. However, naturally, a feed transport pipe 113 is also connected to the other discharge port 112, and the solid feed E, which is air-pressurized and transported within the feed transport pipe 113, is discharged from the other discharge port 112.

[0024] The two feed storage tanks 110 shown in Figure 3 are arranged along the longitudinal direction of the ship 100. The two discharge ports 112 are arranged along the lateral direction of the ship 100.

[0025] In this embodiment, the feeding pipe 10 is connected to the discharge port 112 of the feed storage tank 110 that is far from the side of the ship 100. However, the feeding pipe 10 may also be connected to the discharge port 112 of the feed storage tank 110 that is closer to the side of the ship 100, or the feeding pipe 10 may be connected to each of the two discharge ports 112.

[0026] (Feeding device 1) The feeding device 1 is a device that releases solid feed E contained in a feed storage tank 110 into the water. The feeding device 1 sucks in the solid feed E contained in the feed storage tank 110 provided on the ship 100 and discharged by gas pressure (for example, air pressure) and releases it near the top surface of the fish tank 200. The feeding device 1 comprises a cylindrical feeding pipe 10 through which the solid feed E passes, a first liquid injection hose 20 and a second liquid injection hose 21 connected to the feeding pipe 10, a suspended hopper 30 provided at the end of the feeding pipe 10, a hose 40 connected to the end of the suspended hopper 30, a turbidity removal pipe 50 provided in the middle of the hose 40, and a diffusion nozzle 90 (see Figure 10) provided at the tip of the hose 40. The feeding device 1 also includes a pressure relief pipe 60 attached to the outer surface of the feeding pipe 10 so as to branch off from the feeding pipe 10. Furthermore, the feeding device 1 includes a platform 70 that supports the feeding pipe 10.

[0027] (Feeding pipe 10) The feeding pipe 10 is an annular pipe connected to a discharge port 112 connected to a feed storage tank 110, and has an intake port 11a for drawing in solid feed E that is pressurized and delivered from the discharge port 112, two bent sections (first bent section 11, second bent section 13) that are bent to guide the solid feed E drawn in by the intake port 11a toward the water surface, and an outlet port 13b for discharging the solid feed E that has passed through the bent sections. Specifically, the feeding pipe 10 has a first bent section 11 having an intake port 11a connected to the discharge port 112 of the ship 100, a second bent section 13 having an outlet port 13b for discharging the solid feed E that has passed inside the feeding pipe 10, and a connecting section 12 connecting the first bent section 11 and the second bent section 13.

[0028] An intake port 11a, located at one end of the first bent section 11, sucks in solid feed E discharged from the discharge port 112 of the ship 100. The first bent section 11 is bent so that the transport direction of the solid feed E sucked in from the intake port 11a is horizontal. The solid feed E discharged vertically upward from the discharge port 112 of the ship 100 has its transport direction changed as it passes through the inside of the first bent section 11, is transported horizontally, and discharged to the connection section 12.

[0029] The connecting section 12 extends horizontally and continues to transport the solid feed E, which is being transported horizontally by the first bend 11, in the horizontal direction. The connecting section 12 is connected between the first bend 11 and the second bend 13 to adjust the horizontal length of the feeding pipe 10.

[0030] A connection port 13a, located at one end of the second bend 13, sucks in the solid feed E discharged from the connection port 12. The second bend 13 is bent so that the transport direction of the solid feed E sucked in from the connection port 13a is vertically downward. The solid feed E discharged vertically upward from the discharge port 112 of the ship 100 changes its transport direction as it passes through the first bend 11, the connection port 12, and the second bend 13, and is transported vertically downward before being discharged.

[0031] (First liquid injection hose 20) The first liquid injection hose 20 is a hose for injecting seawater into the feeding pipe 10. The liquid injected into the feeding pipe 10 is not limited to seawater; it may also be freshwater or brackish water. One end of the first liquid injection hose 20 is connected to the ship 100, and the other end is connected to the second bend 13 of the feeding pipe 10. The other end of the first liquid injection hose 20 is connected to a first position P1 downstream of the gas vent 17 (described in detail below) formed in the second bend 13.

[0032] (Second liquid injection hose 21) The second liquid injection hose 21 is a hose for injecting seawater into the feeding pipe 10. The liquid injected into the feeding pipe 10 is not limited to seawater; it may also be freshwater or brackish water. One end of the second liquid injection hose 21 is connected to the ship 100, and the other end is connected to the second bend 13 of the feeding pipe 10. The other end of the second liquid injection hose 21 is connected to a second position P2 downstream from the first position P1 to which the first liquid injection hose 20 is connected.

[0033] (Suspended hopper 30) A suspended hopper 30 is suspended from the discharge port 13b side of the feeding pipe 10. The suspended hopper 30 temporarily holds the solid feed E discharged from the discharge port 13b and sends it downward. Chains 80 of a predetermined length are attached to two locations on the outer surface of the suspended hopper 30, and shackles (not shown) are provided at the ends of the chains 80. The shackles are locked to fasteners 16 provided on the second bend 13 of the feeding pipe 10.

[0034] (Hose 40) A hose 40 is connected to the lower end of the suspended hopper 30. The hose 40 is, for example, a vinyl hose. However, the material of the hose 40 is not limited to vinyl; it may be made of resin or metal. Also, the hose 40 may be flexible or inflexible.

[0035] (50mm pipe for removing turbidity) A turbidity removal pipe 50 is connected to the middle of the hose 40. It is a cylindrical component made of stainless steel pipe with multiple holes. The turbidity removal pipe 50 is positioned such that its upper part is above the sea surface and its lower part is below the sea surface.

[0036] (Diffusion nozzle 90 (see Figure 10)) The diffusion nozzle 90 is connected to the end of the hose 40. The diffusion nozzle 90 is installed near the lid on the top of the fish tank 200 and diffuses the solid feed E passing through the inside of the hose 40 and supplies it into the fish tank 200.

[0037] (Pressure relief pipe 60) The pressure-relieving pipe 60 releases the gas that pressurizes the solid feed E passing through the inside of the feeding pipe 10 via a gas vent 17 (described in detail below) formed in the second bend 13. Since not only gas but also powder and fine particles of solid feed E may pass through the gas vent 17 (described in detail below) formed in the second bend 13, the pressure-relieving pipe 60 allows the powder and fine particles of solid feed E to pass through the gas vent 17 (described in detail below). The powder and fine particles of solid feed E include, for example, powder and fragments that are not suitable for feeding.

[0038] A hose 61 may be connected to the end of the pressure-releasing pipe 60. The hose 61 is, for example, a vinyl hose. However, the material of the hose 61 is not limited to vinyl; it may be made of resin or metal. Also, the hose 61 may be flexible or inflexible. The pressure-releasing pipe 60 or hose 61 releases gas into the atmosphere and also releases powdered solid feed E and fine solid feed E (e.g., powder or fragments unsuitable for feeding) into the sea. However, the powdered solid feed E and fine solid feed E may be collected instead of being released into the sea.

[0039] (70 cargo beds) The loading platform 70 supports the feeding pipe 10. The loading platform 70 may support the second bend 13 of the feeding pipe 10, or the connecting portion 12, or the first bend 11.

[0040] (Detailed structure of feeding pipe 10, hanging hopper 30, and pressure relief pipe 60) Next, with reference to Figures 5 to 7, the detailed structures of the feeding pipe 10, the suspended hopper 30, and the pressure relief pipe 60 will be described.

[0041] (Detailed structure of feeding pipe 10) The feeding pipe 10 is, for example, a stainless steel pipe, but its material is not limited to stainless steel. The inner diameter of the stainless steel pipe is appropriately selected depending on various factors such as the size and amount of solid feed E passing through it and the amount of compressed air, but for example, the inner diameter is 100 to 150 mm, preferably 125 mm. As described above, the feeding pipe 10 has a first bend 11, a connecting part 12, and a second bend 13. The horizontal length of the feeding pipe 10 is appropriately selected depending on the position of the discharge port 112 of the ship 100 and the position of the ship 100 that can be moored relative to the fish pen 200, but for example, it is 1800 mm. The vertical length of the feeding pipe 10 is also appropriately selected, but for example, it is 800 to 900 mm.

[0042] (1st bending part 11) The first bent section 11 has an intake port 11a at one end, which is connected to the discharge port 112 of the ship 100, and a connection port 11b at the other end, which is connected to the connection section 12. The solid feed E sucked in from the intake port 11a is transported by compressed air and discharged from the connection port 11b. The transport direction of the solid feed E is bent along the bending direction of the first bent section 11, changing from a vertical upward direction to a horizontal direction.

[0043] (Connection part 12) The connecting section 12 has an inlet 12a at one end, which is connected to the connecting port 11b of the first bend 11, and an outlet 12b at the other end, which is connected to the connecting port 13a of the second bend 13. The solid feed E sucked in from the inlet 12a is transported by compressed air and discharged from the outlet 12b. The transport direction of the solid feed E is maintained horizontally. The connecting section 12 is used to adjust the horizontal length of the feeding pipe 10, so its length can be selected as appropriate, or the connecting section 12 may be omitted. For example, if the horizontal length of the feeding pipe 10 is A [mm], and the horizontal lengths of the first bend 11 and the second bend 13 are B [mm], then a connecting section 12 with a horizontal length of (A - 2 × B) [mm] is used. The horizontal lengths of the first bend 11 and the second bend 13 may be the same or different.

[0044] (Second bent part 13) The second bent section 13 has a connection port 13a at one end, which is connected to the outlet 12b of the connecting section 12, and a discharge port 13b at the other end. The solid feed E sucked in from the connection port 13a is transported by compressed air or water pressure and discharged from the discharge port 13b. The transport direction of the solid feed E is changed from horizontal to vertically downward by bending along the bending direction of the second bent section 13. The second bent section 13 may be formed from the same material as the first bent section 11.

[0045] The outer circumferential surface of the second bend 13 is provided with a first hose connection 14 to which the first liquid injection hose 20 is connected, and a second hose connection 15 to which the second liquid injection hose 21 is connected. The first hose connection 14 introduces the liquid (e.g., seawater) injected by the connected first liquid injection hose 20 into the inside of the feeding pipe 10. The second hose connection 15 introduces the liquid (e.g., seawater) injected by the connected second liquid injection hose 21 into the inside of the feeding pipe 10. The first hose connection 14 is located at a first position P1 upstream of the second hose connection 15 in the direction of transport of solid feed E within the feeding pipe 10, and the second hose connection 15 is located at a second position P2 downstream of the first hose connection 14 in the direction of transport of solid feed E within the feeding pipe 10. Furthermore, the first hose connection 14 and the second hose connection 15 are positioned downstream of the gas vent 17 (described in detail below) in the feeding pipe 10 in the direction of transporting the solid feed E.

[0046] The direction in which seawater is injected into the feeding pipe 10 from the first liquid injection hose 20 is horizontal. The first position P1, which is the connection point of the first liquid injection hose 20, is positioned above the center in the height direction of the cross-section of the feeding pipe 10 so that the liquid injected from the first liquid injection hose 20 forms a curtain-like structure inside the feeding pipe 10. As a result, the solid feed E passing through the feeding pipe 10 is slowed down by the curtain-like liquid injected by the first liquid injection hose 20.

[0047] The direction in which seawater is injected into the feeding pipe 10 from the second liquid injection hose 21 is downward from the horizontal. In other words, the second liquid injection hose 21 is attached to the feeding pipe 10 so that the solid feed E passing through the feeding pipe 10 is accelerated by the liquid injected by the second liquid injection hose 21.

[0048] Furthermore, two fasteners 16 are provided on the outer circumferential surface of the second bent portion 13. Shackles (not shown) provided at the end of a chain 80 attached to the suspended hopper 30 are secured to these fasteners 16.

[0049] Furthermore, a gas venting section 17 is formed in the second bend 13 to restrict the passage of solid feed E and allow gas to pass through. The gas venting section 17 is provided on the upstream side of the second bend 13 in the feeding pipe 10 in the direction of transport of solid feed E. As shown in Figure 8, this gas venting section 17 is formed by arranging rectangular openings 17a along the circumferential direction of the feeding pipe 10, which are formed along the direction of transport of solid feed E within the feeding pipe 10. Note that the gas venting section 17 is not limited to having multiple openings 17a. For example, it may be formed by arranging steel wires with a circular or rectangular cross-section that are bent into the openings formed in the second bend 13 and extend along the transport direction. By using steel wires with a circular cross-section, it is possible to reduce damage to the solid feed E compared to using steel wires with a rectangular cross-section. Needless to say, the wires are not limited to steel. Furthermore, the gas vent section 17 may have a wire mesh installed in the opening formed in the second bent section 13, or it may have perforated metal installed. Also, the material of the gas vent section 17 is preferably stainless steel, but it may be a metal other than stainless steel or a resin material. The size of the gap and hole of the slit through which the gas passes, formed in the gas vent section 17, is determined by the size of the solid feed E, and the size of the gap and hole of the slit are not limited as long as they restrict the passage of the solid feed E and allow the gas to pass through.

[0050] The gas vent section 17 is provided, for example, in the upper half of the circumferential direction of the feeding pipe 10 (a 180-degree range in the circumferential direction), but this range is not limited. Also, the horizontal length of the gas vent section 17 is not limited, but is, for example, 350 to 400 mm.

[0051] (Detailed structure of the hanging hopper 30) The suspended hopper 30 is a roughly cylindrical member having a large opening 32, a tapered section 33, and a small opening 34. The solid feed E containing seawater discharged from the feeding pipe 10 is temporarily held in the internal space of the suspended hopper 30 or passes through it and is sent downward. The large opening 32 has a larger opening area than the small opening 34 and receives the tip of the second bend 13. The tapered section 33 causes the solid feed E temporarily held in the internal space to slide down toward the small opening 34. The small opening 34 sends the solid feed E and seawater that have been slid down by the tapered section 33 to a hose 40 connected to the tip of the small opening 34.

[0052] Two fasteners 31 are provided on the outer circumferential surface of the large opening 32 of the suspended hopper 30. A chain 80 for suspending the suspended hopper 30 is connected to these fasteners 31. A shackle is attached to the end of the chain 80, and each of the shackles is locked to each of the two fasteners 16 provided on the outer circumferential surface of the second bent portion 13, thereby suspending the suspended hopper 30 from the end of the feeding pipe 10. Compared to fixing the suspended hopper 30 to the end of the feeding pipe 10, suspending the suspended hopper 30 allows for a distribution of force transmission between the feeding pipe 10 and the suspended hopper 30.

[0053] Alternatively, one of the shackles attached to the end of the chain 80 may be an auto-shackle. An auto-shackle is a device to which a rope 160 is attached and pulled, allowing the gate to be opened from above the sea surface. When feeding is completed in one fish farm 200 and it is time to move to the next fish farm 200, the diffusion nozzle 90 and hose 40, etc., which are in the water are lifted by a crane 150 installed on the ship 100, and the diffusion nozzle 90 and hose 40 are brought up to the deck of the ship 100. When the diffusion nozzle 90 and hose 40 are lifted by the crane 150, the auto-shackle is released by opening the gate from above the sea surface, and the suspended hopper 30 is suspended by one chain 80. This prevents unnecessary loads from being placed on each component (feeding pipe 10, suspended hopper 30, hose 40, and diffusion nozzle 90) while the diffusion nozzle 90 and hose 40 are being lifted by the crane 150, thus preventing damage to each component and allowing them to be easily lifted onto the deck. Furthermore, by suspending the suspended hopper 30 with a single chain 80, the range of motion of the suspended hopper 30 relative to the feeding pipe 10 is increased, preventing interference between the feeding pipe 10 and the suspended hopper 30, and allowing it to be placed stationary on the deck of the ship 100.

[0054] (Detailed structure of pressure relief pipe 60) The pressure relief pipe 60 is a cylindrical member that extends horizontally. The horizontal length of the pressure relief pipe 60 is not limited, but is, for example, 650 to 700 mm. One end of the pressure relief pipe 60 is formed to cover the gas vent 17 formed in the second bend 13. The inner diameter of the pressure relief pipe 60 may be the same as or different from the inner diameter of the feeding pipe 10. The other end of the pressure relief pipe 60 is narrower in diameter so that a hose 61 of a predetermined size can be connected to it. However, a hose 61 does not have to be connected to the other end of the pressure relief pipe 60.

[0055] <Effects of this embodiment> The feeding device 1 of this embodiment uses a feeding pipe 10 and a suspended hopper 30 to transport solid feed E that is pumped under gas pressure, thereby allowing the solid feed E to be released to the fish F in the fish tank 200 without the need for a mixer. Furthermore, by transporting the solid feed E by gas pressure using the feeding pipe 10, the solid feed E can be transported to the desired location in a space-saving manner.

[0056] Furthermore, by forming a gas vent section 17 in the feeding pipe 10 of the feeding device 1 of this embodiment, it becomes possible to control the speed of the gas-pressurized solid feed E (deceleration of the solid feed E by releasing the pressure). This reduces the impact of the solid feed E on the inner wall of the feeding pipe 10, and prevents the solid feed E from being crushed.

[0057] Furthermore, by injecting liquid into the feeding pipe 10 using the first liquid injection hose 20, the solid feed E passing through the feeding pipe 10 can be further slowed down. This further suppresses the crushing of the solid feed E.

[0058] Furthermore, by injecting liquid into the feeding pipe 10 using the second liquid injection hose 21, the solid feed E passing through the feeding pipe 10 can be accelerated. This allows the solid feed E to be released to a predetermined position in the sinking fish tank.

[0059] In other words, by controlling the liquid injected from the first liquid injection hose 20 and the second liquid injection hose 21, it becomes possible to release solid feed E to the fish F in the fish tank 200 at a moderate rate.

[0060] Furthermore, by providing a suspended hopper 30 at the end of the feeding pipe 10, the force transmission between the feeding pipe 10 and the suspended hopper 30 can be distributed when affected by waves or when housing the equipment (when the equipment is placed horizontally on the deck), preventing interference between the feeding pipe 10 and the hose 40. In addition, by providing a suspended hopper 30 at the end of the feeding pipe 10, the amount of solid feed E that falls from the suspended hopper 30 is averaged.

[0061] <Summary of Feeding Device 1> The feeding device 1 of this disclosure is a feeding device for releasing solid feed E contained in a feed storage tank 110 into water, A feeding pipe 10 is a cylindrical member connected to a discharge port 112 connected to a feed storage tank 110, and has an intake port 11a for drawing in solid feed E that is pressurized and delivered from the discharge port 112, a bent section (first bent section 11, second bent section 13) that is bent to guide the solid feed E drawn in by the intake port 11a toward the water surface, and an outlet port 13b for discharging the solid feed E that has passed through the bent section, and a gas vent section 17 is provided in the bent section to restrict the passage of solid feed E and allow gas to pass through, The system includes a first liquid injection hose 20 connected to a first position P1 downstream of the gas vent 17, which injects liquid into the inside of the feeding pipe 10.

[0062] Furthermore, the feeding device 1 of this disclosure further comprises a second liquid injection hose 21 connected to a second position P2 downstream of the first position P1, for injecting liquid into the feeding pipe 10.

[0063] Furthermore, in the feeding device 1 of this disclosure, the first liquid injection hose 20 is attached to the feeding pipe 10 such that the solid feed E passing through the feeding pipe 10 is slowed down by the injected liquid.

[0064] Furthermore, in the feeding device 1 of this disclosure, the second liquid injection hose 21 is attached to the feeding pipe 10 such that the solid feed E passing through the feeding pipe 10 is accelerated by the injected liquid.

[0065] Furthermore, the feeding device 1 of this disclosure further comprises a pressure relief pipe 60, which is a cylindrical member and is attached to the outer surface of the feeding pipe 10 such that one end covers the gas vent portion 17.

[0066] Furthermore, the feeding device 1 of this disclosure further includes a suspended hopper 30 that is suspended on the discharge port 13b side of the feeding pipe 10 and temporarily holds and delivers the solid feed E discharged from the discharge port 13b.

[0067] <Summary of floating structures with feeding devices (100 boats, 300 rafts)> The floating bodies with feeding devices (boat 100, raft 300) of this disclosure are equipped with a feeding device 1.

[0068] <Variation> The present invention is not limited to the embodiments described above, and various modifications (including organic combinations of each embodiment) are possible based on the spirit of the invention, and these are not excluded from the scope of the invention. In other words, all configurations that combine the above-described embodiments and their modified forms are included in the present invention.

[0069] For example, in the feeding pipe 10 of the embodiment described above, the first bent portion 11 and the second bent portion 13 are connected via a connecting portion 12, but the connecting portion 12 is not necessarily required. Therefore, the feeding pipe 10 according to the modified example has a first bent portion 11 and a second bent portion 13, and the connecting port 11b of the first bent portion 11 and the connecting port 13a of the second bent portion 13 are connected.

[0070] Furthermore, the amount of seawater injected from the first liquid injection hose 20 and / or the amount of seawater injected from the second liquid injection hose 21 in the above-described embodiment may be controlled using a computer. The amount of solid feed E and compressed air discharged from the pump may also be controlled using a computer. The computer may also calculate the amount of fish F and the activity level of the fish F in the fish farm 200 using a camera or the like, and use the calculation results to control the amount of seawater injected from the first liquid injection hose 20, the amount of seawater injected from the second liquid injection hose 21, and / or the amount of solid feed and compressed air discharged from the pump. [Explanation of symbols]

[0071] 1: Feeding device 10: Feeding pipe 11: 1st bending part 12: Connection part 13:Second bending part 20: First liquid injection hose 21: Second liquid injection hose 30: Hanging hopper 100: Ship 200: Fish tank 300: Raft

Claims

1. A feeding device for releasing solid feed contained in a feed storage tank into water, A feeding pipe comprising a cylindrical member, connected to a discharge port connected to the feed storage tank, having an intake port for drawing in the solid feed that is pressurized and delivered from the discharge port, a bent portion that is bent to guide the solid feed drawn in by the intake port toward the water surface, and a discharge port for discharging the solid feed that has passed through the bent portion, wherein the bent portion is provided with a gas vent that restricts the passage of the solid feed and allows gas to pass through, The feeding pipe is connected to a first position downstream of the gas vent and includes a first liquid injection hose for injecting liquid into the feeding pipe. A feeding device characterized by the following features.

2. The system further comprises a second liquid injection hose connected to a second position downstream of the first position, for injecting liquid into the feeding pipe. The feeding device according to feature 1.

3. The first liquid injection hose is attached to the feeding pipe so that the solid feed passing through the feeding pipe is slowed down by the injected liquid. The feeding device according to feature 1.

4. The second liquid injection hose is attached to the feeding pipe so that the solid feed passing through the feeding pipe is accelerated by the injected liquid. The feeding device according to feature 2.

5. The device further comprises a cylindrical member, the pressure relief pipe of which one end is attached to the outer surface of the feeding pipe such that it covers the gas vent portion, The feeding device according to feature 1.

6. The system further includes a suspended hopper that is suspended on the discharge side of the feeding pipe and temporarily holds and delivers the solid feed discharged from the discharge port. The feeding device according to feature 1.

7. A floating body characterized by being equipped with a feeding device according to any one of claims 1 to 6.

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