JPH035294A - Method and device for cleaning outer shell of ship - Google Patents

Abstract

PURPOSE:To enhance the cleaning efficiency of the outer shell of a ship by supplying water with mixed-in herbicide and washing agent in between the outer body and the lower part of hull, thereby removing materials stuck to the outer shell, such as seaweed and the like. CONSTITUTION:In a washing work, a ship to be cleaned is maintained in a dock while it floats. First, a plurality of suspension members and the like are controlled and a partitioning member is arranged around the lower part of hull H. Next, a discharge pump 6 is operated to drain sea water staying between the hull H and the member 1, and thereafter a water supply pump 4 is actuated to supply water into the member 1 through a water supply pipe 5, from a tank 3 to keep the water therein, while a herbicide for removing seaweed C and a washing agent for removing other adhered materials are mixed in the water. It is thus possible to destroy the seaweed C and the like stuck to the outer shell of the ship to drop them onto the bottom of the member 1 and gather, and to wash them through the effect of washing agent.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a method and device for cleaning the outer shell of a ship,
The purpose of this is to remove seaweed by injecting water into the isolation member placed around the bottom of the ship that separates seawater from the hull, where seaweed, dust, oil, and other deposits have adhered to the outer shell of the ship. Seaweed and other deposits attached to the ship's shell can be removed by mixing a herbicide for cleaning and a cleaning agent for removing deposits, and mixed water at an appropriate level necessary for this purpose. To provide a method and device for cleaning a ship's outer shell, which can improve the operating condition of the ship and prevent corrosion due to adhesion of seaweed and other deposits on the ship's outer shell. It's about doing.

(Prior Art) In general, when a ship is operated on a voyage, seaweed growing in the seawater and other deposits such as dust and oil present in the seawater adhere to the outer shell of the ship while it is in operation or at anchor. There are many.

Conventionally, the seaweed adhering to the ship's outer shell was scraped off using an appropriate tool, and other deposits were removed by scrubbing the outer surface of the ship's shell with a brush using a stripping agent.

(Problem to be solved by the invention) However, as described above, it is difficult to scrape off the seaweed that has adhered to the ship's outer shell using an appropriate tool because the seaweed is firmly attached to the ship's outer shell. In addition, scraping off seaweed and brushing away other deposits from the shells of large ships often involved long hours of work, which was very difficult work.

Furthermore, if other deposits are removed using a stripping agent and left in that state for a long period of time, the stripping agent may even affect the base of the ship.

In addition, seaweed and other deposits remain attached to the hull of the ship.
If a ship is operated with this condition left unattended, the seaweed and other deposits that have adhered to the hull of the ship will act as resistance during operation, reducing the speed of operation. Problems included corrosion of the hull due to seaweed and other deposits.

Therefore, in view of the above-mentioned conventional situation, the present inventors have found that it is possible to easily remove seaweed and other deposits attached to the outer shell of a ship without using any tools or removers, and to solve the above-mentioned problems. We continued to conduct intensive research on methods and equipment for cleaning ship shells.

(Means for Solving the Problems) That is, the present invention provides a method in which an isolation member for isolating seawater and the hull is arranged around the lower part of the hull where seaweed and other deposits have adhered to the outer shell of the vessel, and the isolation member Water is injected between the ship and the hull, and a herbicide for removing seaweed and a cleaning agent for removing the deposits are mixed in this water, and the seaweed and other deposits that have adhered to the hull of the ship are mixed. The method is characterized in that it removes this seaweed and other deposits from the ship's shell, and also cleans the ship's outer surface.

The device includes a herbicide that is placed around the lower part of the ship's hull where seaweed and other deposits have adhered to the ship's outer shell to separate the seawater from the hull and remove seaweed, and a cleaning agent to remove the deposits. an isolation member for storing water to be mixed in; arrangement means for arranging the isolation member around the lower part of the hull; and water injection piping for injecting water into the upper opening of the isolation member;
A water injection pump that sends water to the water injection pipe, a drain pipe connected to an appropriate location on the bottom of the isolation member to communicate with the inside of the isolation member, and a drain pump that drains water mixed inside the isolation member through this drain pipe. It is equipped with the following.

Furthermore, the apparatus includes a water level detection sensor disposed on the outer wall surface of the hull, the inner surface of the isolation member, or between the hull and the isolation member, and this water level detection sensor is connected to the pump circuit.

By providing the above-mentioned method and apparatus for cleaning the outer shell of a ship, the inventors have succeeded in creating a method and apparatus that solve the above-mentioned problems.

(Example) Hereinafter, an example of the apparatus used in the method for cleaning a ship shell according to the present invention will be described based on FIGS. 1 to 8.

In the drawing, (1) shows seawater (S) and the ship's hull (H).
This isolation member is made of a water-impermeable bag and is placed at the lower mouth of the hull (H) by placement means (2), which will be described later.

A water pump (injected into the opening of the isolation member (11) or inside the isolation member (1) injects water from the tank (3) into the isolation member (1).
The tip of a water injection pipe (5) that injects water by the operation of step 4) is disposed.

Also, at an appropriate location on the bottom of the isolation member (1) (in this embodiment, approximately at the lowest part of the bottom), water mixed with herbicides and cleaning agents is injected and stored inside the isolation member (1). A drain pipe (7) is connected to drain water by operating a drain pump (6).

Alternatively, the tank (3) may not be provided, and water may be drawn up directly from the reservoir by the water injection pump (4) and injected into the isolation member (1) via the water injection pipe (5).

Furthermore, a water level detection sensor (32) for detecting the water level by detecting water pressure is disposed at the bottom of the inner surface of the isolation member (1).

This water level detection sensor (32) is connected to the water injection pump (4).
) and the drain pump (6), and the water injection pump (4) or drain pump (6) is connected to the pump circuit of the water injection pump (4) or the drain pump (6) by detecting the water level.
is now driven.

The arrangement means (2) is a dog (D) in which a ship is written.
A crane-shaped support vehicle (21) having a railed arm (21a) protruding in the upward direction of the dog (D), and an arm (2) of this support vehicle (21) are disposed on the shore (K) of
It is movably suspended from the rail (21b) of 1a), and the rail (21b) is connected from the tip of the arm (21a) above the dog (D) to the rear side of the arm on the shore (K) side. A hanging member (22) is moved back and forth toward the dog (D), and a hook is passed around the inner surface of the dog (D) at a position above the dog (D) supported by the lower part of this hanging member (22). A string-like body (23) made of rope or wire, and a string-like body (23) made of rope or wire.
3), a plurality of gripping members (24) which are movably passed through the hole and suspended from appropriate locations of the string-like body (23) to grip the isolation member (1) at the lower end. There is.

The hanging member (22) has a cylinder (22a) at the top and a rod (22b) with the cylinder (22a) at the bottom.
It consists of a roll (22d) rotatably supported via a bearing (22c) and (22c),
Rollers (22e), (2) slid on the rails (21b) of the arms (21a) of the support vehicle (21) at the upper end of the upper part
2e) is attached.

In addition, FIG. 2 shows the roll (
22d) and (22d), and FIG. 3 shows the roll (22d) of the arrangement means (2) when the hull (H2) of a large ship is floating in the dog (D).
(22d)... shows an example of the arrangement.

The cleaning device according to the present invention having the above-mentioned configuration cleans a ship's hull (H) with seaweed and other deposits (C), (C)... adhering to the hull of the ship floating in the dog (D). In this state, the isolation member (1) is attached to a hanging member ( 22), (22
)...1 roll (22d), (22d)...
The isolation member (1) is arranged at the lower mouth of the hull (H) by moving the gripping member (24) along the string-like body (23) so as to be in contact with the outer circumference of the vessel (H). At this time, the suspension member (22) is attached on the rail (21b) of the arm (21a) of the arrangement means (2) according to the size of the hull (H) of the ship.
By sliding the rollers (22e), (22e) automatically or manually by a driving means, the shore (
K) side or the center side of the dog (D) to widen or narrow the spacing between the separating members (1) to obtain the best spacing.

Then, the drain pump (6) is operated to drain the seawater between the hull (H) and the isolation member (1). Next, the water injection pump (4) is operated to inject water from the tank (3) through the water injection pipe (5) into the isolation member (1).
), and a herbicide for removing seaweed and a cleaning agent for removing other deposits are mixed into this water.

The herbicide and cleaning agent mixed into this water may be commercially available ones as long as they do not damage the hull (H).

After that, the water level detection sensor (32) detects the hull (H).
) is detected, and if the water level is too low, the water injection pump (4) is activated to inject water, and if the water level is too high, the drainage pump (6) is activated. Contaminated water is drained until the appropriate water level is reached.

When the seaweed (C), (C) ... adhering to the ship's outer shell is immersed in the herbicide-containing water (M), it is removed from the ship's outer shell and removed from the ship's outer shell. It falls to the bottom of +11 and is collected.

At the same time, deposits such as dust and oil adhering to the hull of the ship are removed from the outside surface of the ship by the cleaning action of mixed water (M) mixed with a cleaning agent, and the outside surface of the ship is cleaned.

In this way, seaweed and other deposits (
C) , (C) ... can be removed and the outer surface of the ship can be cleaned, making it possible to improve the operating condition of the ship, and moreover, it is possible to remove seaweed and other deposits on the ship's outer shell. Corrosion due to adhesion can be prevented.

Note that the arrangement means (2) in the ship shell cleaning apparatus according to the present invention is not limited to the above configuration, and other configurations may also be applied.

(Effects of the Invention) As a method, this invention provides an isolation member that isolates seawater from the hull around the lower part of the hull where seaweed and other deposits have adhered to the outer shell of the vessel, and a space between the isolation member and the hull. A herbicide for removing seaweed and a cleaning agent for removing deposits are mixed in the water, and the seaweed and other deposits that have adhered to the ship's shell are removed. This device is characterized by removing seaweed and other deposits from the ship's hull and cleaning the outer surface of the ship's hull. an isolation member disposed to isolate seawater from the hull and to store water mixed with a herbicide for removing seaweed and a cleaning agent for removing deposits; and an isolation member disposed around the lower part of the hull. a water injection pipe for injecting water into the upper open portion of the isolation member; a water injection pump for feeding water into the water injection pipe; and a connection to an appropriate location on the bottom of the isolation member so as to communicate with the interior of the isolation member. Since the device is characterized by comprising a drain pipe and a drain pump that drains mixed water inside the isolation member through the drain pipe, the following effects are achieved.

In other words, water is injected into the isolation member placed around the lower part of the ship's hull where seaweed and other deposits have adhered to the ship's hull to separate seawater from the ship's hull, and herbicides and cleaning agents are mixed into this water. By doing so, seaweed and other deposits that have adhered to the ship's outer shell can be removed by the mixed water in the isolation member, and the ship can be cleaned and the operating condition of the ship can be improved. Corrosion due to adhesion of seaweed and other deposits to the outer shell can be prevented.

Furthermore, since the water level detection sensor is arranged as a device on the outer wall surface of the ship's hull, the inner surface of the isolation member, or between the hull and the isolation member, and the water level detection sensor is connected to the pump circuit, the following effects can be achieved. play.

In other words, the water level of mixed water is detected by a water level detection sensor, and if the water level is low, the water injection pump is operated via the pump circuit to inject water, and if the water level is too high, the drain pump is operated via the pump circuit to inject water. can be automatically discharged, and the optimum water level for mixed water can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional explanatory view showing the state in which seaweed and other deposits attached to the outer shell of a ship are removed using an embodiment of the cleaning device according to the present invention, and FIG. An explanatory plan view showing the arrangement of the rolls of the arrangement means in a small ship in the dog and the arrangement state of the isolation member, FIG. 3 shows the arrangement of the rolls of the arrangement means in the large ship and the arrangement state of the isolation member in the dog 4 is an explanatory plan view, and FIG. 4 is an explanatory longitudinal cross-sectional view showing a state in which the isolation member is arranged around the lower part of the hull of a ship by the arrangement means, and the mixed water is written in the isolation member. FIG. 5 is an explanatory view of the suspension of the arrangement means. A vertical sectional view showing the internal structure of the installation member,
FIG. 6 is a schematic front view of a portion showing a state in which the isolation member is gripped by the gripping member of the arrangement means, and FIG. 7 is a side view thereof;
FIG. 8 is a circuit explanatory diagram showing the connection between the water level detection sensor and the pump circuit. (C)... Seaweed and other deposits (H)... Hull (
M)...Contaminated water (1)...Isolation member (2)
)... Arrangement means (4)... Water injection pump (5
)... Water injection pump (6)... Drainage pump (7
)...Drain pipe (32)...Water level detection sensor -σ diagram

Claims (3)

[Claims] (1) An isolation member is placed around the lower part of the ship's hull where seaweed and other deposits have adhered to the hull, and water is injected between the isolation member and the hull to remove this water. A herbicide for removing seaweed and a cleaning agent for removing deposits are mixed into the water to remove the seaweed and other deposits that have adhered to the ship's outer shell. 1. A method for cleaning a ship's hull, the method comprising: cleaning the outer surface of the ship's hull; (2) Contamination with a herbicide placed around the lower part of the ship's hull where seaweed and other deposits have adhered to the hull to separate the seawater from the hull and remove seaweed, and a cleaning agent to remove the deposits. an isolation member for storing water, an arrangement means for arranging the isolation member around the lower part of the hull, a water injection pipe for injecting water into the upper opening of the isolation member, and a water injection pipe for sending water into the water injection pipe. a water injection pump, a drain pipe connected to an appropriate location on the bottom of the isolation member to communicate with the interior of the isolation member;
A cleaning device for a ship shell, comprising a drainage pump that drains water mixed inside the isolation member through the drainage pipe. (3) A cleaning device for a ship's outer shell, in which a water level detection sensor is disposed on the outer wall surface of the ship's hull, the inner surface of the isolation member, or between the hull and the isolation member, and the water level detection sensor is connected to a pump circuit.