JPH0937665A - Acid treatment device in working vessel for laver culture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an acid treatment device designed to conduct an acid treatment of a laver net smoothly by bringing a chemical solution into sufficient contact with the laver net. SOLUTION: The whole system is designed to reap laver attached to a laver net on a working vessel. In this case, an acid treatment tank 7 for acid treatment of the laver net is set up along a guide member 4, and on the upper surface of the tank 7, a washing surface 73 is provided so as to pass the laver net in close proximity thereto. A feed channel 721 and a carriage pump each to feed the chemical liquid in a chemical tank 70 are connected to one end of the washing surface 73 in the long direction of the vessel, and a port is provided to spout the chemical liquid onto the washing surface 73 nearly uniformly in its width direction, while a discharge channel 71 through which the chemical liquid is to be discharged from the tank 7 is connected to the other end. The washing surface 73 is provided throughout with guide grooves 730 extending in the long direction of the vessel.

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 boat for collecting seaweed that has been cultivated by seaweed nets on the sea.

[0002]

2. Description of the Related Art Conventionally, as this type of laver cultivation work boat, a laver net guide is mounted on 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 below the sea surface. It is known that the seaweed net is guided on a ship by advancing toward the seaweed net in a state, and the seaweed is continuously collected on the ship. That is, the laver cultivation work boat is provided with a laver net guide on its hull, and the guide extends to the stern side just above the laver cutting device at the front of the hull and above the bridge. An acid treatment tank is provided along the net guide. 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 net on the sea is scooped up and moved in the stern direction along the seaweed guide, while the seaweed adhering to the seaweed is cut off 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-mentioned configuration, the chemical solution is deposited on the seaweed net by passing the seaweed net through the surface of the chemical solution stored in the acid treatment tank to perform the acid treatment. Since the net passes over the acid treatment tank while being pulled from both sides in the width direction by the locking rope, the seaweed net may not be sufficiently immersed in the acid treatment tank depending on the tension of the locking rope. It will be. Therefore, there is a problem that the chemical solution is not sufficiently attached to the seaweed net and the acid treatment tends to be insufficient.

For this reason, it is conceivable to form a cleaning surface on the upper surface of the acid treatment tank through which the seaweed net passes in close proximity and to supply the chemical solution to the seaweed net passing on this surface. When a camber is formed on the ship or the ship leans laterally, the chemical solution flows not only in the lengthwise direction of the ship but also in the widthwise direction. However, there is a problem that the acid treatment becomes insufficient.

The present invention has been made in order to eliminate the above-mentioned conventional drawbacks, and the seaweed aquaculture operation in which the chemical solution is brought into sufficient contact with the seaweed net to perform a good acid treatment. An acid treatment device for a ship is provided.

[0006]

According to a first aspect of the present invention, a guide member extending in the length direction of the hull from the bow end to the stern end is provided on the ship, and the seaweed net along the guide member is provided along the guide member. In the ship for seaweed aquaculture work in which the seaweed adhering to the seaweed net is cut off on the ship, an acid treatment tank for acidizing the seaweed net is formed along the guide member. A washing surface is formed on the upper surface of the acid treatment tank through which the seaweed net passes in close proximity, and one end of the washing surface in the lengthwise direction of the vessel is connected to a supply passage for supplying a chemical solution and a transfer pump, and is also washed. An ejection port for ejecting the chemical solution is formed on the surface, a discharge path for ejecting the chemical solution from the acid treatment tank is connected to the other end of the cleaning surface, and the cleaning surface has a guide groove extending in the longitudinal direction of the vessel. Are formed.

In this construction, a cleaning surface is formed on the upper surface of the acid treatment tank, through which the seaweed net passes in close proximity, and a jet port is formed at the upstream end of the cleaning surface for ejecting the chemical solution onto the cleaning surface. Therefore, the seaweed net moves to the downstream side while keeping the contact state of the chemical liquid by moving on the washing surface in the vicinity of the washing surface. The extended guide groove prevents the chemical solution from flowing laterally, which allows the chemical solution to make sufficient contact with the seaweed net, which allows the seaweed net to be subjected to good acid treatment. become.

According to a second aspect of the present invention, in the above construction, the upper surface of the acid treatment tank is formed so as to be higher toward the center in the width direction so that the seaweed net entirely contacts the cleaning surface. It is a thing.

With this structure, the seaweed net passing on the cleaning surface can be brought sufficiently close to the cleaning surface to make sufficient contact with the chemical solution.

According to the third aspect of the invention, side grooves are formed on both sides of the cleaning surface in the width direction to guide the chemical liquid from the cleaning surface to the other end.

With this configuration, the chemical liquid overflowing from the cleaning surface can be reliably collected at the downstream end of the acid treatment tank through the grooves formed on both sides thereof.

[0012]

1 and 2, a seaweed cultivation work boat 1 is equipped with a bridge 3 at a rear portion of its hull 2 (floor 30 of the bridge), and an engine 10 is installed on the front side thereof. Thus, the propeller 11 which is rotationally driven via the propeller shaft 110 is arranged on the stern bottom, and the rudder blade 12 is arranged on the rear side thereof. The propeller shaft 110 is rotatably held by a holding bracket 112. A pair of left and right stern thrusters 61 that generate thrust in the ship width direction are provided on the stern bottom, and a bow thruster 62 is provided on the bow bottom.

A nori net guide 4 is provided on the hull 2, and a guide extension 41 is provided at the front end of the nori net guide 4. A flip-up means 40 is provided at a base end portion of the guide extension portion 41, and the flip-up means 4 is provided.
The center of 0 is rotated from the state shown by the solid line in FIG. 1 to the state shown by the phantom line so that the guide extension portion 41 can be flipped up from the submerged state. Further, a support portion 42 is formed near the base of the guide extension portion 41, and the support portion 42 abuts on the bow deck to support the flooded guide extension portion 41. FIG. 2 shows a draft surface 90 in a fully loaded state after harvesting the seaweed and a draft surface 900 in a lightly loaded state before cutting the seaweed.

The seaweed net guide 4 extends from the bow end to the rear of the stern end along both sides of the ship, and is supported by struts 43 on both sides of the ship, and gradually extends from the bow end to the vicinity of the bridge 3. It rises and gradually descends behind the bridge 3 and extends to the rear of the stern end.

A seaweed cutting device 5 is arranged near the bow below the seaweed net guide 4, and a seaweed storage 50 for storing the seaweed cut by the seaweed cutting device 5 is formed in the lower hull thereof. ing. An acid treatment tank 7 is provided on the bridge 3, and the acid treatment tank 7 extends along the seaweed net guide 4 to the rear end portion of the bridge 3. A chemical solution tank 70 is installed at the rear end of the acid treatment tank 7 below the bridge 3 and below the acid treatment tank 7.
A recovery pipe (flow path) 71 for recovering the chemical liquid is led from the downstream end of the chemical liquid tank 70 to the chemical liquid tank 70. Further, a supply pipe (flow path) 72 for supplying a chemical liquid is led out from the chemical liquid tank 70, and a tip end portion of the supply pipe 72 is led to an upstream end of the acid treatment tank 7.

The acid treatment tank 7 is integrally formed by FRP and is constructed as shown in FIGS. That is, the acid treatment tank 7 is formed with a cleaning surface 73 through which the seaweed net passes in close proximity on the upper surface thereof, and on both sides of the cleaning surface 73, as shown in FIGS. A side groove 74 for flowing the chemical solution to the groove 75 at the downstream end of the acid treatment tank 7 is formed therebetween. Since the cleaning surface 73 is formed at a position higher than the nori net guide 4 passing through the upper surfaces of the side walls 76 on both sides thereof, the nori seaweed stretched by a rope 92 bound to a post (not shown) standing in water. Net 9
No. 1 is reliably pressed against the cleaning surface 73, so that the acid treatment of the seaweed net 91 is surely performed.
Moreover, the camber is formed so as to be slightly higher in the central portion in the ship width direction, so that the seaweed net passing over the cleaning surface 73 is surely brought into contact with (close to) the cleaning surface 73.

Further, as shown in FIG. 7, a large number of shallow guide grooves 730 are formed on the cleaning surface 73 at regular intervals in the ship width direction, and the guide grooves 730 are parallel to each other from the upstream end to the downstream end of the cleaning surface 73. It extends along the length of the ship. The guide groove 730 may be set to have a width of 30 mm and a depth of 3 mm, for example. Although the number of guide grooves 73 is small in FIG. 1 for easy understanding of the drawing, this number may be appropriately set according to the width and depth of the guide groove 730, the size of the camber, and the like.

As shown in FIG. 10, a pump 79 is attached to one side surface of the chemical liquid tank 70, and the chemical liquid intake pipe 7 is attached to the pump 79.
90 is connected, and the downstream end of the recovery pipe 71 is opened to the recovery unit 710 provided in the lid 700 of the chemical liquid tank,
The recovery unit 710 is provided with a filter (not shown),
The recovered liquid from the recovery pipe 71 is passed through this filter so that seaweed and the like are filtered and recovered in the chemical liquid tank 70.

Further, the side wall 76 is formed in an inverted U-shape in cross section, and a groove 760 opening downward thereof has a chemical solution supply pipe 7 made of vinyl chloride, FRP or the like.
2 is arranged, and a head pipe 721 arranged at the upstream end of the cleaning surface 73 in the ship width direction is connected to the tip end thereof. As shown in FIGS. 8 and 9, the head pipe 721 is formed with a plurality of jet openings 722 that are opened in the stern direction substantially evenly in the ship width direction so that the chemical solution is jetted substantially uniformly in the ship width direction. Is formed in. Further, a confluence groove 75 is formed at the downstream end of the both-side groove 74 to join the both-side grooves 74, and a pair of left and right recovery pipes 71 serving as a chemical solution discharge path are connected to the lowest part of the confluence groove 75. There is.

In the above structure, during normal traveling, the guide extension portion 41 is positioned on the ship as indicated by the chain double-dashed line in FIG. 2, and the ship travels forward in this state. During the seaweed cutting work at the aquaculture farm, the guide extension 41 is projected forward of the bow by the flip-up means 40 to immerse the tip below the sea surface, and the ship is advanced at a slow speed toward the seaweed net on the sea surface. At this time, the bow thruster 62 and the stern thruster 61 are operated to adjust the course of the ship. As the hull 2 advances, the guide extension 41 scoops up the seaweed net on the sea surface to move the ship along the seaweed net guide 4 in the stern direction. In the meantime, the seaweed adhering to the seaweed net is cut by the seaweed cutting device 5 and dropped into the seaweed storage 50 below.

The seaweed net from which the seaweed is cut off is acid-treated by passing through the acid-treating tank 7 on the bridge 3, and is guided by the seaweed net guide 4 and returned to the sea surface at the rear of the stern. During this acid treatment, the chemical solution in the chemical solution tank 70 is pumped by the pump 79 through the supply pipe 72 and the head pipe 72.
1, and jets from the jet port 722 of the head pipe 721 toward the cleaning surface 73 and the seaweed net passing therethrough. The chemical on the cleaning surface 73 is made to flow downstream along with the movement of the seaweed net, and is mainly made to flow in the guide groove formed in the lengthwise direction of the hull. Even if there is a factor that flows to the cleaning surface 73
Is almost never flowed to the side of the seaweed, and the flow in the stern direction is maintained, so that the chemical solution remains in contact with the seaweed net 91 while the seaweed net moves on the cleaning surface 73. Moreover, since the plurality of ejection ports 722 are formed substantially evenly in the ship width direction and the chemicals are formed so as to be ejected almost uniformly in the ship width direction, almost all of the seaweed net 91 passing over the cleaning surface 73 is formed. The chemical solution can be contacted uniformly.

The engine 10 is installed on the front side of the bridge 3, and the chemical liquid tank 70 is installed on the rear side of the bridge 3.
Since both of them are arranged in front of and behind the bridge 3, a large installation space for the chemical liquid tank 70 can be secured and its capacity can be increased. It is possible to secure a wide space.

Further, in the supply path for supplying the chemical solution to the acid treatment tank 7, the chemical solution supply pipe 72 is provided on both side walls 7 of the acid treatment tank 7.
By connecting the head pipe 721 at its tip end through the inside of the pipe 6, the pipe is entirely made up of pipes, and therefore, the sealing property is superior to that of a flow passage of this type made up of thin sections.

In the above embodiment, only the example of picking up the seaweed net from the bow side has been described. However, the arrangement of the guide and the seaweed cutting device 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.

Contrary to the structure of the above embodiment, the chemical solution may be supplied from the stern side of the acid treatment tank 7 and discharged from the bow side.

[0026]

According to the first aspect of the present invention, a cleaning surface is formed on the upper surface of the acid treatment tank through which the seaweed net passes in close proximity, and the upstream end of the cleaning surface is a jet port for ejecting a chemical solution onto the cleaning surface. Due to the formation of the seaweed, the seaweed net moves on the cleaning surface in the vicinity of that surface, so that the chemical solution is kept in contact with it and moves to the downstream side. Since the guide groove that extends in the length direction of the seaweed is formed, it prevents the liquid medicine from flowing laterally, which allows the liquid medicine to make sufficient contact with the seaweed net, which makes the seaweed net a good acidity. Processing will be done.

According to the second aspect of the present invention, the seaweed net passing on the cleaning surface can be brought sufficiently close to the cleaning surface to make sufficient contact with the chemical solution.

According to the third aspect of the present invention, the chemical liquid overflowing from the cleaning surface can be reliably collected at the downstream end of the acid treatment tank through the grooves formed on both sides thereof.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of the present invention, in which a rear half of a hull is shown on an upper side and a front half of the hull is shown on a lower side.

FIG. 2 is a side view of FIG. 1, showing the rear half of the hull on the upper side and the front half of the hull on the lower side.

FIG. 3 is a plan view of an acid treatment tank of the ship.

FIG. 4 is a side view of FIG. 3;

5 is a cross-sectional view taken along the line AA of FIG.

FIG. 6 is a sectional view taken along line BB of FIG.

FIG. 7 is an enlarged view of a portion C in FIG. 6;

FIG. 8 is a perspective view of an upstream end of the acid treatment tank.

9 is a sectional view taken along line DD of FIG.

FIG. 10 is a perspective explanatory view of a circulation system of a chemical solution.

[Explanation of symbols]

 1 Nori cultivation work boat 2 Hull 3 Bridge 4 Nori net guide 5 Nori cutting device 7 Acid treatment tank 10 Engine 11 Propeller 50 Nori warehouse 61 Bow thruster 62 Stern thruster 70 Chemical solution tank 71 Chemical solution recovery pipe 72 Chemical solution supply pipe 74 Cleaning surface 74 Side groove 76 Side wall 721 Head pipe 722 Jet port 730 Guide groove

Claims (3)

[Claims] 1. A guide member is provided on the ship, the guide member extending in the length direction of the hull from the bow end to the stern end, and allows the sea nori net to pass along the guide member over the ship while the nori net is interposed therebetween. In a ship for seaweed cultivation work in which the seaweed adhering to the seaweed is cut off on a ship, an acid treatment tank for acid-treating the seaweed net is formed along the guide member, and the seaweed net is close to the upper surface of the acid treatment tank A cleaning surface that passes through is formed, and a supply passage for supplying the chemical liquid and a transfer pump are connected to one end of the ship on the cleaning surface in the length direction, and a jet port for ejecting the chemical liquid is formed on the cleaning surface. The other end of the cleaning surface is connected to a discharge path for discharging the chemical solution from the acid treatment tank, and the cleaning surface is provided with a guide groove extending in the lengthwise direction of the ship. Acid processing equipment for aquaculture work vessels. 2. The upper surface of the acid treatment tank is formed so as to be higher toward the center in the width direction so that the seaweed net is entirely in contact with the cleaning surface. An acid treatment device for a work vessel for seaweed cultivation as described. 3. The seaweed aquaculture operation according to claim 1 or 2, characterized in that gutters are formed on both sides of the cleaning surface in the width direction to guide the chemical from the cleaning surface to the other end. Acid processing equipment for ships.