JPH08266176A - Acid-treatment apparatus of boat for laver cultivation work - Google Patents

Abstract

PURPOSE: To easily keep the weight balance in the longitudinal direction of a boat. CONSTITUTION: A laver net on the sea is passed above a boat along a guide on the boat and the laver attached to the laver net is gathered during the passage. In the acid-treatment apparatus of a laver-cultivation boat having the above function, an acid treatment tank 70 for treating the laver net with an acid is formed along a laver net guide 4, a main chemical tank 7 for storing a chemical liquid to be supplied to the acid-treatment tank 70 is placed at the downstream end of the acid-treatment tank 70, a recovering pipe 71 for recovering the chemical liquid from the acid-treatment tank 70 is connected to the main chemical tank 7, the chemical liquid in the main chemical tank 7 is supplied to the upstream side of the acid treatment tank 70 with a transfer pump 82 through a channel 81, an auxiliary chemical tank 8 is placed at the upstream side of the upstream end of the acid treatment tank 70 and the chemical liquid is supplied from the auxiliary chemical tank 8 to the main chemical tank 7 with a transfer pump 85 through channels 83, 86.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an acid treatment device for a seaweed work vessel for collecting seaweed cultivated by seaweed nets on the sea.

[0002]

2. Description of the Related Art Conventionally, as this type of work boat for seaweed cultivation, a guide for seaweed net is attached to the upper part of the hull, and the front end of this guide is projected forward from the bow and the front end is submerged under the sea surface. It is known that by advancing toward the seaweed net in this state, the seaweed net is guided onto the ship and the seaweed is continuously collected on the ship. That is, the seaweed cultivation work boat is provided with a seaweed net guide on its hull, and this guide extends to the stern side directly above the seaweed reaper at the front of the ship and above the bridge. An acid treatment tank is provided along the mesh guide, and a chemical solution tank is provided at the stern. Then, the chemical solution for acid treatment in the chemical solution tank is supplied to the upstream end of the acid treatment tank by a pump, and the chemical solution is collected from the downstream end of the acid treatment tank to the chemical solution tank. Then, by moving the ship forward, the seaweed nets on the sea are scooped up and moved in the stern direction along the seaweed net guides, and the seaweed attached to the seaweed nets is cut by the seaweed cutting device and then passed through the acid treatment tank. As a result, the seaweed net is immersed in a chemical solution for acid treatment for acid treatment.

[0003]

In the above structure, since a large-capacity chemical liquid tank for storing the acid treatment chemical liquid is installed at one position on the stern, it is difficult to balance the weight of the hull in the front-rear direction. There is a problem.

The present invention has been made in order to solve the above-mentioned conventional drawbacks, and an object of the present invention is to provide an acid treatment device for a seaweed work vessel, which makes it easy to balance the weight of the hull in the front-rear direction. To do.

[0005]

According to a first aspect of the present invention, the seaweed net on the sea is passed along the guide member on the ship and the seaweed attached to the seaweed net is cut off on the ship. In the aquaculture work vessel, an acid treatment tank for acid treatment of the seaweed net is formed along the guide member, and a main chemical liquid tank for storing the chemical liquid to be supplied to the acid treatment tank is installed. A flow path for collecting the chemical liquid from the downstream end of the acid treatment tank is connected, and a transfer pump and a flow passage for supplying the chemical liquid in the main chemical liquid tank to the upstream end of the acid treatment tank are provided, and an auxiliary chemical liquid tank is arranged. The auxiliary chemical liquid tank is provided with a transfer pump and a flow path for supplying the chemical liquid to the main chemical liquid tank.

According to a second aspect of the present invention, in the above structure, the main chemical liquid tank is installed in the stern portion, and the auxiliary chemical liquid tank is installed in the stern portion.

According to a third aspect of the present invention, in the above structure, the auxiliary chemical liquid tank is provided with seawater intake means for taking in seawater from the bottom of the ship.

According to a fourth aspect of the present invention, a thruster for generating thrust in the width direction of the ship is installed on the bottom of the ship near the auxiliary chemical liquid tank.

[0009]

According to the first aspect of the invention, the chemical liquid tank is composed of the main chemical liquid tank arranged at one end of the acid treatment tank and the auxiliary chemical liquid tank arranged at the other end of the acid treatment tank. Therefore, the weight balance of the hull can be easily adjusted by appropriately setting the installation positions and capacities of these two tanks.

According to the second aspect of the invention, the weight balance of the hull in the front-rear direction is further improved.

According to the third aspect of the present invention, since the auxiliary chemical liquid tank is provided with the seawater intake means, the seawater should be taken in when the balance of the hull needs to be adjusted due to consumption of the chemical liquid. Can be adjusted easily.

In the structure of claim 4, since the auxiliary chemical liquid tank is installed at the bow portion provided with the bow thruster,
The weight of the auxiliary chemical liquid tank can be made to act in the direction of the bow trim, whereby the effect of the bow thruster can be effectively performed.

[0013]

1 to 3, a seaweed cultivation work boat 1 is provided with a bridge 3 at a rear portion of a hull 2 thereof, and an engine 10 is installed below the bridge 3, and the engine 10 rotates the propeller shaft 110 through a propeller shaft 110. A driven propeller 11 is arranged on the bottom of the stern, and a rudder blade 12 is arranged on the rear side thereof. The propeller shaft 110 is rotatably held by a holding bracket 112. A stern bracket 60 is attached to the rear surface of the stern plate 17 at the stern end, and this stern bracket 60 is provided with a stern thruster 62 for generating thrust in the width direction of the stern. A bow thruster 61 is provided on the bow bottom of the bow, and the middle thruster 6 is also provided on the front side of the holding bracket 112 on the stern bottom.
3 is provided.

A nori net guide 4 is provided on the hull 2, and a guide extension 49 is provided at the front end of the nori net guide 4. The guide extension portion 49 is configured such that a connecting portion 48 provided at a base end portion of the guide extension portion 49 can move along a guide member 47 extending in the front-rear direction of the hull. Four
The tip portion of 9 is so formed as to sink under the water surface 90 in front of the bow. This seaweed net guide 4 extends from the bow end to the rear of the stern end along both sides of the ship, is supported by struts 43 on both sides of the ship, and gradually rises from the bow end to the vicinity of the bridge 3, Behind the bridge 3, it gradually descends and extends to the rear of the stern end.

Below the seaweed net guide 4, a seaweed cutting device 41 is arranged near the bow and a bridge 3 is also provided.
An acid treatment tank 70 is provided on the top, and the acid treatment tank 70 extends to the stern end along the seaweed net guide 4. The main chemical liquid tank 7 is installed on the rear surface of the stern plate 17 below the acid treatment tank 70 at the stern end, and a recovery pipe (flow path) for collecting the chemical liquid from the downstream end of the acid treatment tank 70 to the main chemical liquid tank 7. 71
Has been led. Further, a circulation pipe (flow path) 81 for circulating the chemical liquid is led out from the main chemical liquid tank 7, and the circulation pipe 8
A transfer pump 82 is provided in the middle of 1, and the circulation pipe 8
The tip of the No. 1 is connected to the upstream end of the acid treatment tank 70.
An auxiliary chemical liquid tank 8 is installed in the bow of the bow, and a chemical liquid supply pipe 86 is led out from the auxiliary chemical liquid tank 8 and its end is connected to the chemical liquid supply pipe 83 via a transfer pump 85 and a three-way switching valve 84. The end portion of the chemical liquid supply pipe 83 is connected to the main chemical liquid tank 7. A branch pipe 87 is connected to the three-way switching valve 84, and the other end of the branch pipe 87 is opened below the bottom of the ship (the bottom opening 88). Therefore, by switching the three-way switching valve 84, the auxiliary chemical liquid tank 8 communicates with either the main chemical liquid tank 7 or the ship bottom opening 88.

The installation position of the auxiliary chemical liquid tank 8 and the capacity of the chemical liquid tank may be determined so as to be suitable for adjusting the weight balance of the hull 2 in relation to the capacity of the main chemical liquid tank 7. The recovery pipe 71, the circulation pipe 81, and the chemical liquid supply pipes 83 and 86 may be made of FRP. The circulation pipe 81 and the supply pipe 83 passing through the engine room are made of an acid-resistant flexible material. Therefore, it is preferable to bend the pipe in the engine room in order to avoid interference with other devices and facilitate the work of piping.

On the bow side from the center of the hull, a seaweed storage 9 for storing the seaweed cut by the seaweed cutting device 41 is installed. The upper portion of the seaweed storage 9 extends from the bottom of the ship to the central deck 9
A bow deck 91 is provided on the front side of the central portion deck 92, penetrating 2 and protruding upward. And between this seaweed warehouse 9 and the bulwarks 14 on both sides, the central deck 9
A passage 920 consisting of two is formed, and a seaweed introducing port 93 is formed in this passage 920, and this seaweed introducing port 93 communicates with a seaweed supply port 930 that opens to the side of the seaweed storage 9. Further, a dam plate 94 for damming the passage 920 is provided on the stern side of the seaweed introducing port 93. The bow deck 91 and the central deck 92 are formed so as to be gradually higher toward the bow side, and the seaweed inlet 93 is formed at the lowest position on the deck surface in front of the dam plate 94.

The seaweed introduction port 93 may be formed at the lowest position of the central deck 92 without providing the dam plate 94. In addition, a nori inlet 93 is installed near the most downstream end of the nori warehouse 9 (the downstream end in the moving direction of the nori net) so that the nori dropped on the deck from the nori net after passing through the nori cutting device 41 can be collected. You may.

In the above construction, the guide extension portion 40 is positioned on the ship as shown in the figure during normal traveling, and the boat is made to travel forward in this state. During the seaweed mowing work at the farm, the guide extension 40 is projected forward of the bow to immerse the tip under the sea surface 90, and the ship is advanced at a slow speed toward the seaweed net on the sea surface 90. At this time, any one of the bow thruster 61, the stern thruster 62, and the intermediate thruster 63 is operated to adjust the course of the ship. As the hull 2 advances, the seaweed net on the sea surface 90 is picked up by the guide extension portion 40 and moved on the ship along the seaweed net guide 4 in the stern direction. In the meantime, the seaweed adhering to the seaweed net is cut off by the seaweed cutting device 41 and dropped into the seaweed storage 9 below. Part of the seaweed that adheres to the seaweed net is the bow deck 91
Although the seaweed drops to the top, the seaweed that has fallen is flown into the passage 920 of the central deck 92 and supplied to the seaweed storage 9 through the seaweed inlet 93.

The seaweed net from which the seaweed has been cut off is acid-treated by passing through the acid-treating tank 70 on the bridge 3, and is returned to the sea surface 90 behind the stern through the seaweed net guide 4. During this acid treatment, the chemical liquid in the main chemical liquid tank 7 is constantly supplied to the upstream side of the acid treatment tank 70 by the transfer pump 82 through the circulation pipe 81, and the chemical liquid is collected from the downstream end of the acid treatment tank 70. It is recovered to the main chemical liquid tank 7 through 71. On the other hand, the auxiliary chemical liquid tank 8 is also filled with the chemical liquid for acid treatment, but the transfer pump 85 is stopped and the chemical liquid is not supplied to the chemical liquid supply pipe 83. As described above, the chemical solution in the acid treatment tank 70 is circulated and used, but the chemical solution is gradually consumed and diluted with seawater carried by the seaweed net, so that replenishment and concentration adjustment of the chemical solution are required. Therefore, the transfer pump 85 is operated to supply the chemical liquid in the auxiliary chemical liquid tank 8 to the main chemical liquid tank 7 through the supply pipes 86 and 83. As the chemical solution at this time, a concentrated stock solution may be used, or a chemical solution diluted to a predetermined concentration may be used.

In order to dilute the chemical liquid in the auxiliary chemical liquid tank 88, for example, a predetermined amount of undiluted stock solution is stored in the auxiliary chemical liquid tank 8 and the three-way switching valve 84 is operated to branch the pipe 8.
7 may be communicated with the auxiliary chemical liquid tank 8, and the transfer pump 85 may take in and dilute seawater from the opening 88. Further, the auxiliary chemical liquid tank 8 is filled with only seawater as ballast, whereby the auxiliary chemical liquid tank 8 is
It can also be used as a tank for trim adjustment. Further, by filling the auxiliary chemical liquid tank 8 with the chemical liquid or seawater, the weight of the auxiliary chemical liquid tank 8 can cause the hull 2 to act in the bow trim direction, whereby the action of the bow thruster 61 can be effectively performed.

In order to fully fulfill the function of the bow thruster 61, it is necessary to prevent the bow thruster 61 from being exposed above the sea surface 90. For this purpose, it is preferable to make the bow trim as much as possible. In order to carry out this adjustment, it is preferable to install the auxiliary chemical liquid tank 8 at a position as close to the bow end as possible. Further, by adjusting the amount of the chemical liquid in the auxiliary chemical liquid tank 8, regardless of the amount of the seaweed in the seaweed container 9, the sea surface 90 of the bow thruster 61 is adjusted.
It is also possible to keep the position from to constant at all times, so that the thruster propulsion efficiency can be kept optimal. Further, before cutting the seaweed, the chemicals are evenly added to both the main chemical solution tank 7 and the auxiliary chemical solution tank 8, and the weight of the bow increases due to the increase in the weight of the seaweed in the seaweed 9 due to the cutting of the seaweed. The chemical solution in the auxiliary chemical solution tank 8 may be transferred to the main chemical solution tank 7 in accordance with the amount, whereby the weight balance in the front-rear direction of the hull can be easily adjusted regardless of the presence or absence of seaweed in the seaweed container 9. You can

In the above embodiment, only the example of picking up the seaweed net from the bow side was explained, but the arrangement of the guides and the seaweed reaping device, etc. is reversed and the hull 2 is moved backward to move the seaweed net from the stern end to the sea. You may scoop up.

[0024]

According to the first aspect of the present invention, the main chemical liquid tank arranged at one end of the acid treatment tank and the auxiliary chemical liquid tank arranged at the other end of the acid treatment tank form a chemical liquid tank. Since it is configured, the weight balance of the hull can be easily adjusted by appropriately setting the installation positions and capacities of both tanks.

According to the second aspect of the present invention, since the auxiliary chemical liquid tank is provided with the seawater intake means, the seawater should be taken in when it is necessary to adjust the balance of the hull due to consumption of the chemical liquid or the like. Can be adjusted easily.

In the structure of claim 3, since the auxiliary chemical liquid tank is installed in the bow portion provided with the bow thruster,
The weight of the auxiliary chemical liquid tank can be made to act in the direction of the bow trim, whereby the effect of the bow thruster can be effectively performed.

[Brief description of drawings]

FIG. 1 is a side view of a ship showing an embodiment of the present invention.

FIG. 2 is a plan view of FIG.

[Explanation of symbols]

 1 Nori cultivation work boat 2 Hull 3 Bridge 4 Nori net guide 7 Main chemical liquid tank 8 Auxiliary chemical liquid tank 9 Nori warehouse 10 Engine 11 Propeller 41 Seaweed reaping device 49 Guide extension 61 Bow thruster 62 Stern thruster 70 Acid treatment tank 71 Recovery Pipe 81 Circulation pipe 83,86 Chemical supply pipe 84 Three-way switching valve 85 Transfer pump 87 Branch pipe

Claims (4)

[Claims] 1. In a ship for seaweed aquaculture work, wherein the seaweed net is passed over the ship along a guide member on the ship, and the seaweed adhered to the seaweed is cut off on the ship during this time, the seaweed net is acidified. An acid treatment tank for treatment is formed along the guide member, and a main chemical liquid tank for storing the chemical liquid to be supplied to the acid treatment tank is installed. The main chemical liquid tank collects the chemical liquid from the downstream end of the acid treatment tank. Is connected to the main chemical liquid tank, and a transfer pump and a flow channel for supplying the chemical liquid in the main chemical liquid tank to the upstream end of the acid treatment tank are further provided, and an auxiliary chemical liquid tank is arranged, and from this auxiliary chemical liquid tank to the main chemical liquid tank. An acid treatment device for a seaweed working ship, which is provided with a transfer pump for supplying a chemical solution and a flow path. 2. The main chemical liquid tank is installed in the stern,
The acid treatment device for a laver work vessel according to claim 1, wherein the auxiliary chemical liquid tank is installed in the stern part. 3. The acid treatment device for a seaweed working ship according to claim 1, wherein the auxiliary chemical liquid tank is provided with seawater intake means for taking in seawater from the bottom of the ship. 4. The acid treatment device for a seaweed working ship according to claim 3, wherein a thruster for generating a thrust in the width direction of the ship is installed on the bottom of the ship near the auxiliary chemical liquid tank.