Laver net treatment ship

Abstract

To reduce a running cost associated with acid treatment or fertilization treatment of a laver net.SOLUTION: In laver net treatment ship (1) for treating a laver net by treatment liquid stored in a treatment tank (3) on the sea, a support body (rear guide body 12) for supporting a photovoltaic power generation panel (34) is provided for a hull (2) in a posture-changeable manner into a posture in performing a treatment work of treating a laver net by treatment liquid on the sea (work posture) and a posture in performing a non-treatment work of not treating a laver net by treatment liquid (non-work posture), where a rear face (non-power generation surface) of the photovoltaic power generation panel (34) faces upward by setting the support body to the work posture, and a surface (power generation surface) of the photovoltaic power generation panel (34) faces upward by setting the support body to the non-work posture.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a laver net processing ship for processing a laver net with a processing liquid stored in a processing tank at sea.

Background Art

[0002] Conventionally, laver nets stretched on the sea surface have been used for laver cultivation. When acid-treating or fertilizing such laver nets at sea with a chemical solution, a laver net processing ship is used (see, for example, Patent Document 1).

[0003] In a conventional laver net processing ship, a processing tank with an open upper part is provided on the hull, and a processing liquid such as a chemical solution or fertilizer is injected into the processing tank at a predetermined concentration. While navigating, the laver net stretched on the sea surface is immersed in the processing liquid in the processing tank to perform acid treatment, fertilization treatment, etc.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the above conventional laver net processing ship, in order to appropriately perform acid treatment or fertilization treatment of the laver net, it is desirable to keep the liquid volume and concentration of the processing liquid stored in the processing tank within a predetermined range.

[0006] Therefore, in a laver net processing ship, a device that uses electric power such as a machine for supplying a processing liquid to the processing tank is required, and it is necessary to mount a battery as its power source.

[0007] However, since the battery is a consumable item, there is a possibility that the running cost associated with acid treatment or fertilization treatment of the laver net will increase.

Means for Solving the Problem

[0008] Therefore, in the present invention according to claim 1, in a laver net processing ship for processing a laver net with a processing liquid stored in a processing tank at sea, a support for supporting a solar power generation panel is provided on the hull, and the posture during the processing operation (working posture) of processing the laver net with the processing liquid at sea and the posture during the non-processing operation (non-working posture) when the laver net is not being processed with the processing liquid are provided on the hull so as to be changeable. By setting the support in the working posture, the back surface (non-power generation surface) of the solar power generation panel faces upward, while by setting the support in the non-working posture, the front surface (power generation surface) of the solar power generation panel faces upward.

[0009] Further, in the present invention according to claim 2, in the present invention according to claim 1, the support is provided above an outboard motor provided on the hull, and by setting the support in the working posture, the solar power generation panel covers the upper part of the outboard motor.

[0010] Further, in the present invention according to claim 3, in the present invention according to claim 1 or claim 2, a laver net guide provided on the hull so as to be capable of being tilted for guiding a laver net from a processing tank to the sea is used as the support.

Effect of the Invention

[0011] And the present invention has the following described effects.

[0012] That is, in the present invention, in a laver net processing ship for processing laver nets in a processing tank stored at sea with a processing liquid, a support for supporting a solar power generation panel is provided on the hull, and the posture during the processing operation of processing the laver nets with the processing liquid at sea (working posture) and the posture during the non-processing operation when the laver nets are not being processed with the processing liquid (non-working posture) are provided so as to be changeable. By setting the support in the working posture, the back surface (non-power generation surface) of the solar power generation panel faces upward, while by setting the support in the non-working posture, the front surface (power generation surface) of the solar power generation panel faces upward. Therefore, it is possible to prevent the laver nets from coming into contact with the front surface (power generation surface) of the solar power generation panel during work and damaging the solar power generation panel. Also, by driving the machines provided on the laver net processing ship with the electric power generated by the solar power generation panel during non-working hours, it is possible to reduce the running costs associated with the acid treatment and fertilization treatment of the laver nets.

[0013] In particular, when the support is provided above the outboard engine provided on the hull and the solar power generation panel covers the area above the outboard engine by setting the support in the working posture, the solar power generation panel can protect the area above the outboard engine.

[0014] Also, when using the laver net guide provided on the hull so as to be able to be tilted forward and backward for guiding the laver nets from the processing tank to the sea as the support, it is possible to easily install a solar power generation panel on an existing laver net processing ship.

Brief Description of the Drawings

[0015]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Modes for Carrying Out the Invention

[0016] The specific configuration of the laver net processing ship according to the present invention will be described below with reference to the drawings.

[0017] As shown in FIGS. 1 to 3, the laver net processing ship 1 detachably mounts a processing tank 3 for treating the laver net with a treatment liquid inside a rectangular box-shaped hull 2 with an open top.

[0018] The hull 2 forms working spaces 4 and 5 for workers to work on the left and right sides of the processing tank 3.

[0019] Further, the hull 2 forms a bracket 6 at the rear, and an outboard motor 7 is attached to the bracket 6 via a hinge 8 so as to be vertically rotatable. Thereby, the outboard motor 7 can be changed in posture between a working posture suitable for driving at sea while standing upright with respect to the hull 2 (see FIG. 4(a)) and a non-working posture suitable for placement on land while lying down with respect to the hull 2 (see FIG. 4(b)).

[0020] The processing tank 3 has a bottomed rectangular box shape with an open top, and a treatment liquid such as a chemical solution or fertilizer for treating the laver net is stored inside. The laver net can be immersed in the treatment liquid to perform acid treatment or fertilization treatment on the laver net. This processing tank 3 forms a hollow air chamber 39 below the bottom wall. The air chamber 39 is provided with a circulation mechanism for circulating the treatment liquid between the processing tank 3, supplies the treatment liquid stored in the air chamber 39 to the processing tank 3, and can also recover the treatment liquid used in the processing tank 3 into the air chamber 39. Alternatively, an openable and closable communication hole may be provided between the processing tank 3 and the air chamber 39 so that the treated treatment liquid can be recovered from the processing tank 3 into the air chamber 39.

[0021] At the front end of this treatment tank 3, a front guide body 9 for guiding the laver net from the outside (front) to the inside (treatment tank 3) of the hull 2 is attached so as to be vertically rotatable via left and right bearings 10, 10. The front guide body 9 has its front part inclined forward-low and rear-high from the upper front edge of the treatment tank 3, its rear part extending horizontally along the upper edge of the treatment tank 3, and its rear end part being supported by the bearings 10, 10 so as to be vertically rotatable. Thus, the front guide body 9 can be changed in posture to a working posture suitable for guiding the laver net at sea by falling forward with respect to the hull 2 (treatment tank 3) (see Fig. 4(a)), and a non-working posture suitable for placement on land by falling backward with respect to the hull 2 (treatment tank 3) (see Fig. 4(b)).

[0022] Also, inside the treatment tank 3, an inner guide body 11 for guiding the laver net from the front side to the rear side of the treatment tank 3 is attached. The inner guide body 11 has its front part inclined forward-high and rear-low from the upper front edge of the treatment tank 3 to the bottom surface, its middle part extending horizontally along the bottom surface of the treatment tank 3, and its rear part inclined forward-low and rear-high from the bottom surface of the treatment tank 3 to the upper rear edge.

[0023] Also, at the rear end of the treatment tank 3, a rear guide body 12 for guiding the laver net from the inside (treatment tank 3) to the outside (rear) of the hull 2 is attached so as to be vertically rotatable via a rotating shaft 13 horizontally attached between the upper parts of the left and right rear ends of the treatment tank 3. The rear guide body 12 has its front end part attached to the rotating shaft 13, its front part inclined forward-low and rear-high from the upper rear edge of the treatment tank 3 to the rear, and its rear part extending horizontally rearward above the outboard engine 7. Thus, the rear guide body 12 can be changed in posture to a working posture suitable for guiding the laver net at sea by falling backward with respect to the hull 2 (treatment tank 3) (see Fig. 4(a)), and a non-working posture suitable for placement on land by falling forward with respect to the hull 2 (treatment tank 3) (see Fig. 4(b)).

[0024] Furthermore, inside the treatment tank 3, a laver net presser 14 for immersing the laver net in the treatment liquid is accommodated.

[0025] The laver net presser 14 is integrally formed in a hollow shape using a hollow pipe. The front part is inclined with the front higher and the rear lower along the front inclined part of the inner guide body 11, the middle part extends horizontally along the middle part of the inner guide body 11 (the bottom surface of the treatment tank 3), and the rear part is inclined with the front lower and the rear higher along the rear inclined part of the inner guide body 11. This laver net presser 14 has its middle part immersed in the treatment liquid inside the treatment tank 3 in balance with its own weight and buoyancy, and only the front part and the rear part protrude above the liquid level of the treatment liquid.

[0026] The above-mentioned laver processing ship 1 is equipped with a treatment liquid supply device 15 for supplying treatment liquid into the treatment tank 3, a seawater supply device 16 for supplying seawater into the treatment tank 3, an air supply device 17 for supplying air into the treatment tank 3, a control device 18 (computer) for controlling these devices 15, 16, 17, and a power supply device 19 for supplying power to these devices 15, 16, 17 and the control device 18.

[0027] The treatment liquid supply device 15 connects a pump 21 to a tank 20 storing the treatment liquid, and branches and connects four treatment liquid supply pipes 22 for supplying the treatment liquid from the pump 21 into the treatment tank 3.

[0028] The four treatment liquid supply pipes 22 are horizontally attached to the upper parts of the front end, rear end, left end, and right end of the treatment tank 3. As shown in FIG. 5, a plurality of treatment liquid supply ports 23 are formed in an inclined shape toward the side wall surface of the treatment tank 3 along the upper parts of the front end, rear end, left end, and right end of the treatment tank 3.

[0029] When the control device 18 drives the pump 21, the treatment liquid supply device 15 discharges the treatment liquid from the treatment liquid supply ports 23 of the four treatment liquid supply pipes 22 toward the side wall surfaces of the upper ends of the front, rear, left, and right of the treatment tank 3. Thereby, the treatment liquid can be supplied from the treatment liquid supply ports 23 along the side walls of the treatment tank 3 from the surroundings (front, rear, left, and right) of the treatment tank 3, preventing direct contact with the laver net being processed, and the treatment liquid can be stirred inside the treatment tank 3 to equalize the concentration of the treatment liquid.

[0030] The seawater supply device 16 connects a pump 25 to a seawater suction pipe 24 for sucking up seawater, and attaches a seawater supply pipe 26 for supplying the seawater inside the treatment tank 3 to the pump 25.

[0031] The seawater suction pipe 24 is attached to the upper end of a bracket 6 at the rear end of the hull 2 via a hinge 27 so as to be vertically rotatable. Thereby, the seawater suction pipe 24 can be changed in posture between an operating posture suitable for sucking up seawater at sea while standing with respect to the hull 2 (see Fig. 4(a)), and a non-operating posture suitable for placement on land while lying down with respect to the hull 2 (see Fig. 4(b)).

[0032] When the control device 18 drives the pump 25, the seawater supply device 16 sucks up seawater from the seawater suction pipe 24 and supplies the seawater inside the treatment tank 3 from the seawater supply pipe 26.

[0033] The air supply device 17 connects a pump 29 to an air suction pipe 28 for sucking in outside air, and branches and connects two air supply pipes 30 for supplying air inside the treatment tank 3 to the pump 29.

[0034] The two air supply pipes 30 are attached to extend in a direction (the left - right width direction of the treatment tank 3) perpendicular to the seaweed net conveyance direction (the front - rear direction of the treatment tank 3) with a space in the front - rear direction at the bottom of the hull 2 (treatment tank 3). As shown in Fig. 6, a plurality of air supply ports 31 for discharging air into the treatment liquid are formed to be inclined in a front - low - rear - high shape in the conveyance direction of the seaweed net 38 (the rear of the hull 2 (treatment tank 3)) along the extension direction (the left - right width direction of the treatment tank 3). Thereby, the air is projected toward the seaweed net 38 to which the air is conveyed from the air supply port 31, and the seaweed net 38 can be smoothly conveyed by the discharge force of the air. At the same time, the treatment liquid can be forcibly stirred inside the treatment tank 3 to make the concentration of the treatment liquid uniform.

[0035] When the control device 18 drives the pump 29, the air supply device 17 sucks outside air (air) from the air suction pipe 28 and discharges it into the treatment liquid inside the treatment tank 3 from the air supply ports 31 of the two air supply pipes 30.

[0036] Connected to the control device 18 are a water level sensor 32 for detecting the water level (water volume) stored in the treatment tank 3 and a concentration sensor 33 for detecting the concentration (pH) of the treatment liquid stored in the treatment tank 3.

[0037] Then, based on the detection values of the water level sensor 32 and the concentration sensor 33, the control device 18 appropriately controls the treatment liquid supply device 15, the seawater supply device 16, and the air supply device 17 so that the concentration and water volume of the treatment liquid inside the treatment tank 3 are within a preset range.

[0038] For example, when the water level of the treatment liquid detected by the water level sensor 32 is less than the preset lower water level value and the concentration of the treatment liquid detected by the concentration sensor 33 is less than the preset lower concentration value, the control device 18 drives the treatment liquid supply device 15 and the seawater supply device 16 to supply the treatment liquid and seawater into the treatment tank 3, and drives the air supply device 17 to stir the treatment liquid inside the treatment tank 3.

[0039] Also, when the water level of the treatment liquid detected by the water level sensor 32 is equal to or higher than the preset lower water level value and the concentration of the treatment liquid detected by the concentration sensor 33 is less than the preset lower concentration value, the control device 18 drives the treatment liquid supply device 15 to supply the treatment liquid into the treatment tank 3, and drives the air supply device 17 to stir the treatment liquid inside the treatment tank 3.

[0040] In addition, when the level of the processing liquid detected by the level sensor 32 is less than the preset lower limit value of the level, and the concentration of the processing liquid detected by the concentration sensor 33 is equal to or higher than the preset lower limit value of the concentration and less than the preset upper limit value, or when the concentration of the processing liquid detected by the concentration sensor 33 is equal to or higher than the preset upper limit value, the control device 18 drives the seawater supply device 16 to supply seawater into the processing tank 3, and drives the air supply device 17 to stir the processing liquid inside the processing tank 3.

[0041] The power supply device 19 connects the storage battery 35 to the solar power generation panel 34, connects the storage battery 35 and the backup battery (cell) 36 to the power switch 37, and controls the power switch 37 with the control device 18 to supply the power of either the storage battery 35 or the battery 36 to the processing liquid supply device 15, the seawater supply device 16, and the air supply device 17.

[0042] The solar power generation panel 34 is horizontally detachably attached to the rear center of the rear guide body 12 (at a position directly above the outboard motor 7). In the working posture of the rear guide body 12, the back surface that becomes the non-power generation surface of the solar power generation panel 34 is attached upward with the surface that becomes the power generation surface of the solar power generation panel 34 facing downward.

[0043] Here, the rear guide body 12 functions as a support for supporting the solar power generation panel 34. Since the rear guide body 12 as the support is attached to the hull 2 via the pivot shaft 13 so as to be pivotable up and down, when the support (rear guide body 12) lies backward with respect to the hull 2 (treatment tank 3) and is in a working posture suitable for guiding the laver net at sea (see Fig. 4(a)), the back surface (non-power generation surface) of the solar power generation panel 34 faces upward. On the other hand, when the support (rear guide body 12) lies forward with respect to the hull 2 (treatment tank 3) and is in a non-working posture suitable for placement on land (see Fig. 4(b)), the front surface (power generation surface) of the solar power generation panel 34 faces upward. This prevents seaweed nets and seawater dripping from the seaweed nets from adhering to the front surface (power generation surface) of the solar power generation panel 34 during the operation of transporting the seaweed nets at sea, which could cause damage or failure to the solar power generation panel 34. At the same time, it enables the solar power generation panel 34 to be repositioned during non-operation so that it can generate electricity well on the front surface (power generation surface).

[0044] As described above, the laver net treatment ship 1 is configured as follows. It stores treatment liquids such as chemical solutions and fertilizers in the treatment tank 3, and while navigating using the outboard motor 7, it sequentially immerses the laver nets stretched on the sea surface in the treatment liquid in the treatment tank 3 to perform acid treatment, fertilization treatment, etc. on the laver nets. At that time, on the laver net treatment ship 1, the laver net is lifted from the sea along the front guide body 9 into the treatment tank 3, and while moving the laver net inside the treatment tank 3 along the inner guide body 11, the laver net is pressed by the laver net retainer 14 and immersed in the treatment liquid, and then the laver net is conveyed from the treatment tank 3 into the sea along the rear guide body 12.

[0045] As described above, the laver net treatment ship 1 is configured to be provided with a seawater supply device 16 for sucking up seawater and supplying the seawater into the treatment tank 3.

[0046] Therefore, in the laver net processing ship 1 with the above configuration, seawater can be supplied to the treatment tank 3 during the operations of acid treatment and fertilization treatment of the laver net at sea, and by maintaining the liquid volume and concentration of the treatment liquid stored in the treatment tank 3 within a predetermined range, the acid treatment and fertilization treatment of the laver net can be performed well.

[0047] Further, the laver net processing ship 1 has a configuration in which the seawater supply device 16 supplies seawater to the treatment tank 3 based on the water level of the treatment liquid inside the treatment tank 3.

[0048] Therefore, in the laver net processing ship 1 with the above configuration, by maintaining the liquid volume of the treatment liquid stored in the treatment tank 3 within a predetermined range, the acid treatment and fertilization treatment of the laver net can be performed well while maintaining the liquid volume of the treatment liquid stored in the treatment tank 3 within a predetermined range.

[0049] Further, the laver net processing ship 1 has a configuration in which the seawater supply device 16 supplies seawater to the treatment tank 3 based on the concentration of the treatment liquid inside the treatment tank 3.

[0050] Therefore, in the laver net processing ship 1 with the above configuration, by maintaining the concentration of the treatment liquid stored in the treatment tank 3 within a predetermined range, the acid treatment and fertilization treatment of the laver net can be performed well.

[0051] Further, the laver net processing ship 1 is configured to be provided with an air supply device 17 for supplying air into the treatment tank 3.

[0052] Therefore, in the laver net processing ship 1 with the above configuration, by supplying air into the treatment tank 3 with the air supply device 17, the treatment liquid inside the treatment tank 3 can be agitated, the concentration of the treatment liquid inside the treatment tank 3 can be made uniform, and the acid treatment and fertilization treatment of the laver net can be performed well.

[0053] Further, the laver net processing ship 1 has a configuration in which a plurality of air supply ports 31 of the air supply device 17 are arranged side by side in a direction perpendicular to the moving direction of the laver net 38 being treated in the treatment tank 3.

[0054] Therefore, in the laver net processing ship 1 with the above configuration, air can be supplied to the entire width of the laver net 38, the concentration of the processing liquid in which the laver net 38 is immersed can be made uniform, and the acid treatment and fertilization treatment of the laver net 38 can be carried out even better.

[0055] In addition, the laver net processing ship 1 is configured to discharge air from the air supply port 31 of the air supply device 17 in the moving direction of the laver net 38.

[0056] Therefore, in the laver net processing ship 1 with the above configuration, the force of the air discharged from the air supply port 31 can be effectively utilized to smoothly move the laver net 38, and thereby, the acid treatment and fertilization treatment of the laver net 38 can be carried out even better.

[0057] In addition, the laver net processing ship 1 is provided with a support body (rear guide body 12) for supporting the solar power generation panel 34 on the hull 2 so that the posture can be changed between the posture during the processing operation (working posture) of treating the laver net with the processing liquid at sea and the posture during the non-processing operation (non-working posture) when the laver net is not treated with the processing liquid. By setting the support body (rear guide body 12) in the working posture, the back surface (non-power generation surface) of the solar power generation panel 34 faces upward, while by setting the support body (rear guide body 12) in the non-working posture, the front surface (power generation surface) of the solar power generation panel 34 faces upward.

[0058] Therefore, in the laver net processing ship 1 with the above configuration, it is possible to prevent the laver net from contacting the front surface (power generation surface) of the solar power generation panel 34 during work and damaging the solar power generation panel 34, and also to reduce the running cost associated with the acid treatment and fertilization treatment of the laver net by driving the machines provided on the laver net processing ship 1 with the electric power generated by the solar power generation panel 34 during non-work.

[0059] In addition, the laver net processing ship 1 is provided above the outboard engine 7 provided on the hull 2 with a support body (rear guide body 12), and by setting the support body (rear guide body 12) in the working posture, the solar power generation panel 34 covers the upper part of the outboard engine 7.

[0060] Therefore, in the laver net processing ship 1 with the above configuration, the upper part of the outboard engine 7 can be protected by the solar power generation panel 34.

[0061] In addition, the laver net processing ship 1 has a configuration in which a laver net guide (rear guide body 12) for guiding the laver net provided on the hull 2 so as to be able to be tilted forward and backward from the processing tank 3 to the sea is used as a support.

[0062] Therefore, in the laver net processing ship 1 with the above configuration, the solar power generation panel 34 can be easily installed on the existing laver net processing ship.

Explanation of Signs

[0063] 1 Laver net processing ship 2 Hull 3 Processing tank 4, 5 Working space 6 Bracket 7 Outboard engine 8 Hinge 9 Front guide body 10 Bearing 11 Inner guide body 12 Rear guide body 13 Rotating shaft 14 Laver net presser 15 Processing liquid supply device 16 Seawater supply device 17 Air supply device 18 Control device 19 Power supply device 20 Tank 21 Pump 22 Processing liquid supply pipe 23 Processing liquid supply port 24 Seawater suction pipe 25 Pump 26 Seawater supply pipe 27 Hinge 28 Air suction pipe 29 Pump 30 Air supply pipe 31 Air supply port 32 Water level sensor 33 Concentration sensor 34 Solar power generation panel 35 Storage battery 36 Battery 37 Power switch 38 Laver net 39 Air chamber

Claims

1. In a laver net processing ship for processing laver nets with a processing liquid stored in a processing tank at sea, a support for supporting a solar power generation panel is provided on the hull so as to be capable of changing its posture between a posture during processing work (working posture) of processing laver nets with the processing liquid at sea and a posture during non-processing work (non-working posture) when laver nets are not being processed with the processing liquid. By setting the support in the working posture, the back surface (non-power generation surface) of the solar power generation panel faces upward, while by setting the support in the non-working posture, the front surface (power generation surface) of the solar power generation panel faces upward. A laver net processing ship characterized by this.

2. The laver net processing ship according to claim 1, wherein the support is provided above an outboard motor provided on the hull, and by setting the support in the working posture, the solar power generation panel covers the area above the outboard motor.

3. The laver net processing ship according to claim 1 or claim 2, wherein a laver net guide for guiding laver nets from the processing tank to the sea, which is provided on the hull so as to be able to be tilted, is used as the support.

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