JP6978797B2 - Box type ship - Google Patents

Description

The present invention relates to a box-shaped ship.

It is known that diatoms growing in seawater, red root rot bacteria and the like adhere to the seaweed during cultivation, and the quality of the seaweed deteriorates. Further, as a measure against the deterioration of the quality of the seaweed, it is known that diatoms and fungi adhering to the seaweed are removed by an acid treatment agent. In Patent Document 1 below, a ship called a moguri ship is used to submerge the ship under the seaweed net, and the acid treatment liquid is sprayed from the underside of the seaweed net to remove the diatoms adhering to the seaweed. A continuous processing method is disclosed. Further, in this moguri ship, the pH value of the acid treatment liquid is kept constant by automatically controlling the amount of the acid to be added based on the pH measurement value of the acid treatment liquid measured by the pH meter.

Japanese Unexamined Patent Publication No. 2003-38051

By the way, although the acid treatment using the moguri ship of Patent Document 1 can be adopted in a relatively wide sea where the moguri ship can run, it should be adopted in the cultivation of seaweed in the area where the moguri ship cannot be operated. I can't. In a situation where such a moguri ship cannot be used, acid treatment is performed using a relatively small box-shaped ship. This box-shaped ship is provided with a roller for winding the seaweed net and a treatment tank for immersing the seaweed net wound around the roller in an acid treatment liquid.

In acid treatment using such a box-shaped ship, the pH of the acid-treated solution is not automatically adjusted due to the relatively small size of the box-shaped ship, and the pH is adjusted solely at the discretion of the operator. Is being done. Therefore, in the acid treatment using a box-shaped ship, it is difficult to maintain and manage the acid treatment liquid at a desired pH value.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a box-shaped ship capable of maintaining an acid-treated liquid at a desired pH value.

In order to achieve the above object, in the present invention, a box including an acid treatment tank for storing an acid treatment liquid and a pair of winding rolls provided in the acid treatment tank for winding a seaweed net to which seaweed is attached. A mold ship, which is provided in the acid treatment tank and is provided at a position where it does not interfere with the pH sensor for detecting the pH of the acid treatment liquid and the seaweed net wound on the take-up roll, and discharges the acid stock solution. The undiluted solution discharge unit is provided with an undiluted solution discharge unit that automatically adjusts the supply amount of the acid undiluted solution to be supplied to the undiluted solution discharge unit based on the detection value of the pH sensor, and the undiluted solution discharge unit is invaded by the seaweed net. A solution is adopted in which it is provided behind each of the take-up rolls in a direction.

According to the present invention, since the pH of the acid-treated liquid is automatically adjusted, it is possible to provide a box-shaped ship capable of maintaining the acid-treated liquid at a desired pH value.

It is a functional block diagram in the top view of the acid treatment apparatus which concerns on 1st Embodiment of this invention. It is (a) XX sectional view and (b) YY sectional view of FIG. 1 in the side view of the acid treatment apparatus which concerns on 1st Embodiment of this invention. It is a functional block diagram in the top view of the acid treatment apparatus which concerns on 2nd Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
The box-shaped ship A according to the present embodiment is an acid treatment device for acid-treating the seaweed on the seaweed net being cultivated. The box-shaped ship A includes a ship body 1, an acid treatment tank 3 in which an acid treatment liquid 2 is stored, a pair of winding rolls 5a and 5b for winding a seaweed net 4, a hanging rod 6 (rod-shaped member), and a resin sheet 7 (sheet). A member), tubes 8A and 8B (tubular members), a pH sensor 9, a pH controller 10, an acid stock solution pump 11, an acid stock solution tank 13 for storing the acid stock solution 12, and unwinding rolls 14a and 14b. The pH controller 10, the acid stock solution pump 11, and the acid stock solution tank 13 constitute the stock solution supply device according to the present invention.

The ship body 1 is a resin floating body molded into a box shape. The ship body 1 has a rectangular planar shape whose front-rear direction dimension is slightly shorter than the width direction dimension, and for example, the front-rear direction dimension is about 1.5 m and the width direction dimension is about 2 m. Further, the ship body 1 is equipped with an engine (not shown), which is a driving force for rotating the take-up and unwind rolls. Such a ship body 1 is provided with an acid treatment tank 3, a suspension rod 6, a pH controller 10, an acid stock solution pump 11, an acid stock solution tank 13, a battery (not shown), and the like.

The acid-treated liquid 2 is an acid-diluted liquid having a desired pH value suitable for acid-treating the seaweed on the seaweed net 4, for example, pH = 0.4 to 2.6. That is, the acid treatment liquid 2 is a liquid in which a predetermined organic acid or an acid stock solution 12 such as hydrochloric acid is diluted with seawater. A certain amount of the acid treatment liquid 2 is stored in the acid treatment tank 3, and the seaweed adhering to the seaweed net 4 is acid-treated by coming into contact with the seaweed net 4.

The acid treatment tank 3 is a hollow portion of a substantially rectangular parallelepiped formed in the center of the upper part of the ship body 1, and stores a predetermined amount of the acid treatment liquid 2. The capacity of the acid treatment tank 3 is, for example, 400 to 800 liters.
The seaweed net 4 is a long net to which seaweed is attached. The seaweed net 4 has a plurality of rows arranged in the seaweed farm. That is, in the cultivation of seaweed, a plurality of seaweed nets 4 are arranged in the sea area serving as a farm, and the seaweed is cultivated in a state of being attached to the seaweed net 4. A pair of recesses are formed in the ship body 1 with the acid treatment tank 3 sandwiched in the width direction. These pair of recesses are not only a space for arranging some devices but also a space for an operator to board the ship.

The pair of take-up rolls 5a and 5b are rotating shafts arranged in parallel and horizontally in the acid treatment tank 3 at a certain distance. That is, the take-up rolls 5a and 5b are one of such a pair of take-up rolls 5a and 5b rotatably attached to the ship body 1 in a posture orthogonal to the front-rear direction of the ship body 1. The take-up roll 5a is for sequentially winding the seaweed net 4 that invades from the front when the ship body 1 moves forward, and the other take-up roll 5b is from the rear when the ship body 1 moves backward. This is for sequentially winding up the invading seaweed net 4.

The suspension rod 6 is a rod-shaped member provided above the acid treatment tank 3 so as to face the liquid surface of the acid treatment liquid 2. That is, both ends of the suspension rod 6 are fixed to the upper part of the ship body 1 so as to be in the middle of the pair of winding rolls 5a and 5b and in a posture parallel to the winding rolls 5a and 5b. Such a hanging rod 6 is located at a position where it does not interfere with the seaweed net 4 wound by the pair of winding rolls 5a and 5b, that is, behind each winding roll 5a and 5b with respect to the intrusion direction of the seaweed net 4. It is provided in.

The resin sheet 7 is a substantially rectangular and flexible sheet member, for example, a white sheet made of vinyl chloride. One long side (upper end) of the resin sheet 7 is fixed to the suspension rod 6, and the resin sheet 7 hangs down from the suspension rod 6 toward the liquid surface of the acid treatment liquid 2. Further, as shown in the figure, the resin sheet 7 is above the liquid surface of the acid treatment liquid 2 so that the other long side (lower end) is at a position separated from the liquid surface of the acid treatment liquid 2 by a distance D. It is provided so as to be located.

The tubes 8A and 8B are tubular members provided along the suspension rods 6 on both sides of the resin sheet 7. A plurality of discharge holes 8a and 8b are formed in the tubes 8A and 8B at predetermined intervals in the length direction, and are made of, for example, vinyl chloride. The discharge holes 8a and 8b are formed at an angle inclined toward the resin sheet 7 with respect to the lower side so as to discharge the acid stock solution 12 toward the resin sheet 7.

Here, the suspension rod 6, the resin sheet 7, and the tubes 8A and 8B constitute the undiluted solution discharge portion in the present invention. That is, the suspension rod 6, the resin sheet 7, and the tubes 8A and 8B discharge the acid stock solution 12 between the pair of winding rolls 5a and 5b.

The pH sensor 9 is a sensor that detects the pH value of the acid treatment liquid 2. As shown in FIG. 2B, the pH sensor 9 is provided in the acid treatment tank 3 in the vicinity of the undiluted solution discharge portion. That is, the pH sensor 9 is provided in the acid treatment tank 3 at a slight distance from the bottom surface of the acid treatment tank 3 so as not to come into contact with the bottom surface of the acid treatment tank 3 on either end side of the suspension rod 6. .. The pH sensor 9 is connected to the pH controller 10 and outputs a detected value to the pH controller 10.

The pH controller 10 is a control device that feedback-controls the acid stock solution pump 11 based on the detected value input from the pH sensor 9 and the control threshold value stored in advance. That is, the pH controller 10 controls the acid stock solution pump 11 so that the pH value of the acid treatment solution 2 maintains the control threshold value.

The acid stock solution pump 11 is a capacity pump that operates based on an operation signal input from the pH controller 10. That is, the acid stock solution pump 11 is connected to the acid stock solution tank 13 and the pair of tubes 8A and 8B by a predetermined pipe, and the acid stock solution 12 having a flow rate corresponding to the operation signal is pumped out from the acid stock solution tank 13 and paired. Supply to tubes 8A and 8B. The discharge amount of the acid stock solution pump 11 is, for example, 400 to 22000 ml / min.

The acid stock solution 12 is an aqueous solution of an acid having a predetermined pH value. The acid stock solution 12 is an acid having a pH value lower than the pH value of the acid treatment solution 2, that is, an acid having a higher acidity than the acid treatment solution 2, and is, for example, an organic acid such as apple acid, lactic acid, or citric acid, or pH adjustment. Acid is a food additive as an agent. Further, the acid stock solution 12 is colored in a predetermined color other than white so that it can be visually recognized when flowing down the surface of the white resin sheet 7. The acid stock solution 12 is colored brown by, for example, caramel.

The acid stock solution tank 13 is a container having a predetermined capacity for storing the acid stock solution 12. The acid stock solution tank 13 is connected to the acid stock solution pump 11 by a predetermined pipe, and supplies the acid stock solution 12 to the acid stock solution pump 11.

Here, the pH controller 10, the acid stock solution pump 11, and the acid stock solution tank 13 constitute the stock solution supply device in the present invention. That is, the pH controller 10, the acid stock solution pump 11, and the acid stock solution tank 13 automatically adjust the supply amount of the acid stock solution 12 to be supplied to the stock solution discharge unit based on the detected value of the pH sensor 9.

The pair of unwinding rolls 14a and 14b are rotating shafts around which a seaweed net with no seaweed adhered is wound at the start of work. The unwinding rolls 14a and 14b are provided in the acid treatment tank 3 in parallel with the winding rolls 5a and 5b.

Next, the operation of the box-shaped ship A configured in this way will be described in detail with reference to FIGS. 1 and 2. Further, since the operation is the same when the ship body 1 moves forward and when the ship body 1 moves backward, in the present embodiment, only the case where the ship body 1 moves forward will be described.

First, the worker moves the ship body 1 to the sea where the seaweed net 4 to be acid-treated is installed. Then, for example, as shown by the arrow in FIG. 1, when the ship body 1 advances, the seaweed net 4 invades the acid treatment tank 3 from the front as the ship body 1 advances. The seaweed net 4 that has entered the acid treatment tank 3 is sequentially wound by the winding roll 5a by rotating the winding roll 5a.

The rolled seaweed net 4 is immersed in the acid treatment liquid 2 stored in the acid treatment tank 3. Therefore, when the seaweed on the seaweed net 4 comes into contact with the acid treatment liquid 2, the seaweed is acid-treated.

A pH sensor 9 is provided in the acid treatment tank 3, and the pH sensor 9 detects the pH value of the acid treatment liquid 2 stored in the acid treatment tank 3. The detected value detected by the pH sensor 9 is output to the pH controller 10. The pH controller 10 feedback-controls the acid stock solution pump 11 based on the detected value input from the pH sensor and the control threshold value stored in advance. Based on the operation signal input from the pH controller 10, the acid stock solution pump 11 pumps the acid stock solution 12 at a flow rate corresponding to the operation signal from the acid stock solution tank 13 and supplies the acid stock solution 12 to the pair of tubes 8A and 8B.

Specifically, for example, when the control threshold value stored in advance by the pH controller 10 and the detection value of the pH sensor 9 are the same, the pH value of the acid treatment liquid 2 is maintained at the control threshold value. The amount of the acid stock solution 12 supplied to the acid treatment liquid 2 may be small. Therefore, the pH controller 10 controls the operation of the acid stock solution pump 11 so as to supply the acid stock solution 12 in an amount necessary for maintaining the pH value of the acid treatment liquid 2. to the acid treatment liquid 2.
On the other hand, if there is a discrepancy between the control threshold value of the pH controller 10 and the detected value of the pH sensor 9, it is necessary to lower the pH value of the acid treatment liquid 2 so that it becomes the same value as the control threshold value. Therefore, the pH controller 10 controls the operation of the acid stock solution pump 11 so as to supply the acid stock solution 12 in an amount necessary for lowering the pH value of the acid treatment liquid 2.
Therefore, according to the bookcase type ship A, it is possible to automatically adjust the supply amount of the acid stock solution 12 supplied to the acid treatment liquid 2 based on the detected value of the pH sensor 9.

The acid stock solution 12 pumped out from the acid stock solution tank 13 by the acid stock solution pump 11 that has received the operation signal from the pH controller 10 is supplied to the pair of tubes 8A and 8B. The acid stock solution 12 is discharged toward the resin sheet 7 from a plurality of discharge holes 8a and 8b provided in the pair of tubes 8A and 8B, and flows down the surface of the resin sheet 7. The acid stock solution 12 that has flowed down the surface of the resin sheet 7 is dropped onto the acid-treated liquid 2 because the lower ends of the resin sheet 7 are provided at intervals D from the liquid surface of the acid-treated liquid 2. To. The acid stock solution 12, which has a heavier specific gravity than the acid-treated liquid 2, is easily dissolved in the acid-treated liquid 2 by being dropped onto the acid-treated liquid 2. Further, the acid stock solution 12 dropped onto the acid treatment liquid 2 is contained in the acid treatment liquid 2 by the rotation of the take-up roll 5a or the take-up roll 5b when the ship body 1 is shaken and the seaweed net 4 is wound up. The acid-treated liquid 2 is agitated by the water flow generated in the acid-treated liquid 2 and diffused into the acid-treated liquid 2. Therefore, according to the bookcase type ship A, the pH value in the acid treatment liquid 2 can be made uniform.

Further, since the acid stock solution 12 is colored brown, the acid stock solution 12 is discharged from the discharge holes 8a and 8b of the tubes 8A and 8B and flows down the surface of the white resin sheet 7 so that the acid stock solution 12 flows down. Can be visually recognized by the operator whether or not is supplied to the acid treatment liquid 2. Therefore, according to the bookcase type ship A, the operator can visually determine whether or not the acid stock solution 12 is normally supplied to the acid treatment solution 2.

The seaweed net 4 to which the seaweed is attached is completely wound up, and after the seaweed on the seaweed net 4 is acid-treated, the seaweed net to which the seaweed is not attached is wound around the unwinding roll 14a. As 1 moves forward, it is unwound to the outside of the ship body 1 and installed in the place where the seaweed net 4 to which the seaweed adheres was installed.

[Second Embodiment]
Next, the box-shaped ship B according to the second embodiment will be described. As shown in FIG. 3, the box-shaped ship B has the same overall configuration as the box-shaped ship A according to the first embodiment, but is shown in FIG. 3 instead of the tubes 8A and 8B of the first embodiment. The pipes 8C and 8D are further provided with an acid stock solution pump 11A and valves 15c and 15d. Further, in the second embodiment, the undiluted solution discharge portion in the present invention is composed of pipes 8C and 8D, and the unwinding rolls 14a and 14b are close to the acid treatment tank 3 in parallel with the winding rolls 5a and 5b. It is provided.
In the second embodiment, the same parts as the components in the first embodiment are designated by the same reference numerals, the description thereof will be omitted, and only the different points will be described.

The pipes 8C and 8D are provided along the width direction on the approach side of the seaweed net 4 in the acid treatment tank 3. That is, one pipe 8C is provided in the acid treatment tank 3 on the forward direction side and the width direction of the box type ship B, and the other pipe 8D is provided in the acid treatment tank 3 on the reverse direction side of the box type ship B. It is provided along the width direction. In such pipes 8C and 8D, a plurality of discharge holes 8c and 8d are formed at predetermined intervals in the length direction, and are made of, for example, vinyl chloride. The discharge holes 8c and 8d are formed at an angle inclined toward the wall surface of the acid treatment tank 3 downward or downward so as to discharge the acid stock solution 12 toward the wall surface of the acid treatment tank 3.

As shown in FIG. 3, the pH sensor 9 is provided at any one of the four corners in the acid treatment tank 3 in the vicinity of the pipes 8C and 8D in the acid treatment tank 3. Further, the pH sensor 9 is provided at a slight distance from the bottom surface of the acid treatment tank 3 so as not to come into contact with the bottom surface.

The acid stock solution pump 11A is a capacity pump that operates based on an operation signal input from the pH controller 10. That is, the acid stock solution pump 11A is connected to the acid stock solution tank 13 by a predetermined pipe, and is also connected to a pair of tubes 8C and 8D via valves 15c and 15d described later, and has a flow rate corresponding to an operation signal. The acid stock solution 12 is pumped out from the acid stock solution tank 13 and supplied to the pair of tubes 8C and 8D.

As shown in FIG. 3, the valves 15c and 15d are provided between the acid stock solution pump 11A and the pipes 8C and 8D, respectively, and are flow rate adjusting valves that adjust the flow rate of the acid stock solution 12 by manual operation. The valves 15c and 15d are manually operated so that the same amount of acid stock solution 12 is supplied to the pair of pipes 8C and 8D.

The pH sensor 9 detects the pH value of the acid treatment liquid 2 stored in the acid treatment tank 3, that is, the pH value in the acid treatment tank 3. The detected value detected by the pH sensor 9 is output to the pH controller 10. The pH controller 10 feedback-controls the acid stock solution pump 11A based on the detected value input from the pH sensor 9 and the control threshold value stored in advance. That is, the pH controller 10 automatically controls the supply amount of the acid stock solution 12 supplied to the pipes 8C and 8D based on the pH value input from the pH sensor 9.

In such a box-shaped ship B, the flow rate ratio of the acid stock solution 12 supplied to the pipes 8C and 8D by the valves 15c and 15d is adjusted to 1: 1 and is supplied to the pipes 8C and 8D by the pH controller 10. The total flow rate of the acid stock solution 12 is adjusted so that the pH value of the acid treatment solution 2 maintains a desired value. Further, the acid stock solution 12 is discharged from a plurality of discharge holes 8c and 8d provided in the pipes 8C and 8D toward the wall surface of the acid treatment tank 3, flows down along the wall surface, and flows into the acid treatment liquid 2. ..

The acid stock solution 12 that has flowed into the acid treatment liquid 2 from the pair of pipes 8C and 8D is acid due to the rotation of the take-up roll 5a or the take-up roll 5b when the ship body 1 swings and the seaweed net 4 is wound up. The acid treatment liquid 2 is agitated by the water flow generated in the treatment liquid 2 and diffused into the acid treatment liquid 2.

Further, in such a box-shaped ship B, the acid stock solution 12 is colored brown, while the wall surface of the acid treatment tank 3 is, for example, light blue, so that the acid stock solution 12 is acid-treated from the pair of pipes 8C and 8D. The operator can easily visually recognize whether or not the material is supplied to 2 (acid treatment tank 3). Therefore, according to the bookcase type ship B, the operator can easily determine whether or not the acid stock solution 12 is normally supplied to the acid treatment liquid 2 (acid treatment tank 3).

According to the box-shaped vessels A and B according to the first and second embodiments, the pH of the acid-treated liquid is automatically adjusted when the seaweed on the seaweed net 4 is treated with acid, so that the acid-treated liquid 2 is used. Can be maintained at the desired pH value.

Further, according to such box-shaped vessels A and B, members using electricity such as a pH controller 10, acid stock solution pumps 11 and 11A, and a battery (not shown), and an acid stock solution in which the acid stock solution 12 is stored are stored. The tanks 13 are spaced apart from each other in the ship main body 1 with the acid treatment tank 3 interposed therebetween. Therefore, it is possible to prevent the member that uses electricity from failing due to contact with the acid stock solution 12.

The present invention is not limited to the above embodiment, and for example, the following modifications can be considered.
(1) In the first embodiment, the pair of tubes 8A and 8B are provided under the suspension rod 6, but the present invention is not limited thereto. The acid stock solution 12 may be supplied to the acid treatment solution 2 from the suspension rod 6 without providing the pair of tubes 8A and 8B. That is, a plurality of pair of discharge holes 8a and 8b may be formed in the lower portion of the suspension rod 6 on both sides of the take-up roll 5a side and the take-up roll 5b side in line symmetry and at predetermined intervals in the length direction. Also in the above configuration, the discharge holes 8a and 8b are formed at an angle inclined toward the resin sheet 7 with respect to the lower side so as to discharge the acid treatment liquid 2 toward the resin sheet 7. By adopting the above configuration, the pair of tubes 8A and 8B becomes unnecessary, and the number of parts can be reduced. When the above configuration is adopted, it is desirable to use a material resistant to acid as the material of the suspension rod 6.

(2) In the first embodiment, the suspension rod 6 is provided, but the suspension rod 6 is in a posture intermediate between the pair of winding rolls 5a and 5b and parallel to the winding rolls 5a and 5b. However, the present invention is not limited to this. The suspension rod 6 does not necessarily have to be provided between the pair of winding rolls 5a and 5b, and may be displaced toward either of the winding rolls 5a or the winding roll 5b. Further, the suspension rod 6 may not be provided in parallel with the take-up rolls 5a and 5b, and may be provided so as to be inclined with respect to the take-up rolls 5a and 5b.

(3) In the first embodiment, the resin sheet 7 is provided so that the lower end of the resin sheet 7 is located above the liquid level of the acid treatment liquid 2, but the present invention is not limited to this. The lower end of the resin sheet 7 may be in contact with the liquid surface of the acid treatment liquid 2. Even in the case of the above configuration, in the acid stock solution 12 that has flowed down the surface of the resin sheet 7 and is supplied into the acid treatment liquid 2, the ship body 1 is shaken and the take-up roll 5a or the take-up roll 5b is seaweed. The acid-treated liquid 2 is agitated by the water flow generated in the acid-treated liquid 2 by rotating when the net 4 is wound, so that the acid-treated liquid 2 is diffused into the acid-treated liquid 2.

(4) In the first embodiment, one pH sensor 9 is provided on one side of the suspension rod 6, but the present invention is not limited to this. The pH sensor 9 may be provided on both the left and right sides of the suspension rod 6. Having the above configuration makes it possible to detect the pH value of the acid treatment liquid 2 more accurately.

(5) In the first embodiment, a white sheet is used as the resin sheet 7, but the present invention is not limited thereto. A sheet with a color different from the above may be adopted. With the change in the color of the resin sheet 7, the color of the colorant of the acid stock solution 12 is changed to a color other than the color of the resin sheet 7 so that the acid stock solution 12 flowing down the surface of the resin sheet 7 can be visually recognized. May need to be changed.

(6) In the second embodiment, the pH sensor 9 is provided at any one of the four corners of the acid treatment tank 3, but the present invention is not limited to this. PH sensors are arranged at all four corners of the acid treatment tank 3, the average value of the pH detection values of the four pH sensors is set as the pH value of the acid treatment liquid 2, and the pH value of the acid treatment liquid 2 and the pH controller 10 are set in advance. The acid stock solution pump 11A may be feedback-controlled based on the stored control threshold value.

(7) In the first and second embodiments, the acid stock solution 12 is colored brown using caramel, but the present invention is not limited thereto. Any colorant that does not affect the environment, which is a complementary color to the color of the resin sheet 7, may be used for coloring.

(8) Although the resin sheet 7 is adopted in the first and second embodiments, the present invention is not limited thereto. A white partition plate may be used instead of the resin sheet 7.

(9) In the first and second embodiments, one acid stock solution tank 13 is provided, but the present invention is not limited thereto. A plurality of acid stock solution tanks 13 may be provided, connected to the acid stock solution pump 11 via a manual switching valve, and the acid stock solution tank 13 for supplying the acid stock solution 12 may be manually switched.

Further, the acid stock solution 12 stored in each acid stock solution tank 13 may be colored with a different color. By having the above configuration, the operator can visually recognize which acid stock solution 12 of the acid stock solution tank 13 is supplied to the acid treatment liquid 2. Therefore, the operator can grasp the remaining amount of the acid stock solution tank 13 installed in the ship main body 1.

(10) In addition to the first and second embodiments, when the seaweed net 4 is wound up, the acid treatment liquid 2 increases due to the seawater adhering to the seaweed net 4 being mixed into the acid treatment tank 3. A discharge pump for discharging a part of the ship to the outside of the ship body 1 may be provided.

A, B Box-shaped ship 1 Ship body 2 Acid treatment liquid 3 Acid treatment tank 4 Nori net 5a, 5b Winding roll 6 Suspension rod (bar-shaped member)
7 Resin sheet (seat member)
8A, 8B tube (tubular member)
8C, 8D pipe 8a, 8b, 8c, 8d Discharge hole 9 pH sensor 10 pH controller (stock solution supply device)
11, 11A Acid stock solution pump (stock solution supply device)
12 Acid stock solution 13 Acid stock solution tank (stock solution supply device)
14a, 14b unwinding roll 15c, 15d valve

Claims (1)

It is a box-shaped ship provided with an acid treatment tank for storing an acid treatment liquid and a pair of winding rolls provided in the acid treatment tank for winding a seaweed net to which seaweed is attached.
A pH sensor provided in the acid treatment tank to detect the pH of the acid treatment liquid, and
An undiluted solution discharge section provided at a position that does not interfere with the seaweed net wound on the take-up roll and ejects the acid undiluted solution.
A stock solution supply device that automatically adjusts the supply amount of the acid stock solution to be supplied to the stock solution discharge unit based on the detection value of the pH sensor is provided.
The undiluted solution discharge unit is provided behind each winding roll with respect to the invasion direction of the seaweed net, and is characterized in that the acid undiluted solution is supplied to the acid-treated solution from above. ..

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