JPS6134957Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a device for discharging mud (including earth and sand) from the mud hold of a dredger, earth carrier, etc., and in particular a flowing water type installed in the direction of the ship's length in the lower part of the mud hold. This invention relates to a flowing water type mud removal device that transports mud along a mud drainage ditch and unloads it onto land.

Conventional devices of this type include those shown in Figs. 1 to 3, in which there is a
A mud drainage ditch 3 extending in the direction of the ship's length is provided, and the mud that falls from the mud storage 2 to the mud drainage ditch 3 through the opening with the door 6 is fluidized with the flow of water sucked in from the sea chest 5 by the pump 4. It is starting to be unloaded.

The door 6 is opened and closed by a hydraulic drive device 7 as shown in FIG.

However, in such a conventional mud removal device, when the door 6 is opened, the mud in the mud storage 2 is pushed into the mud removal groove 3 through the opening directly above the door 6, causing the mud removal groove 3 to become clogged. The problem is that it is easy.

The present invention aims to solve these problems by making it possible to properly introduce mud from the mud storage to the mud drainage ditch, thereby preventing clogging in the mud drainage ditch. The purpose of the present invention is to provide a flowing water type mud removal device for a ship's mud hold.

For this purpose, the mud drainage system of the present invention is provided with a groove-shaped bottom extending in the direction of the ship's ship at the bottom of the mud hold inside the ship, and a flowing water drainage type that extends in the ship's direction adjacent to the side of this groove-shaped bottom. The present invention is characterized in that it has a mud groove and a side opening with a door that guides mud from the groove-shaped bottom to the flowing water type mud drainage groove on the side.

Below, a flowing water type mud removal system for an inboard mud hold as an embodiment of the present invention will be explained with reference to the drawings. Figure 4 is a cross-sectional view of the ship's hull, and Figure 5 is an enlarged view of section V in Figure 4. FIG.

As shown in FIGS. 4 and 5, a grooved bottom part 2a extending in the longitudinal direction is formed in the lower part of the mud hold 2 in the hull 1, and adjacent to both sides of this grooved bottom part 2a in the longitudinal direction. Flowing water type sludge drainage grooves 3', 3' are formed extending to.

Sea water sucked in by a pump from a sea quart (not shown) is introduced into each sludge ditch 3', passes through the pump, and is sent to an unloading pipe (not shown).

In addition, a side opening 6'a with a door 6' is provided to guide the mud from the grooved bottom 2a to the side mud drainage groove. It is designed to be opened and closed by being driven by the

With the above-described configuration, when loading dredged mud into the mud tank 2, the door 6' is closed in advance, and the mud is loaded into the groove-shaped bottom 2a at the bottom of the mud tank, but the mud draining groove 3' will not be loaded.

When the mud is unloaded after sailing to a desired location, the pump is operated to flow seawater into the mud drainage ditches 3', 3'.

After seawater begins to flow into the mud drainage grooves 3', 3' in this manner, the door 6' of the opening 6'a is opened at an appropriate location, taking into account the strength and inclination of the hull, and the groove-shaped bottom 2
Sludge drainage ditch 3',
3' and discharged overboard with running water.

A plurality of doors 6' are arranged intermittently in a row in the longitudinal direction, and are adjusted to open and close in the most appropriate combination.

After the mud in the mud storage 2 is completely discharged, each door 6' is closed, the mud drain groove 3' and the pump are washed with seawater from the sea chest, and then the pump is stopped.

In the conventional device, the groove-shaped bottom 2a is used as a mud drainage groove, so when the door (see reference numeral 6 in Figure 3) is opened, mud falls all at once due to earth pressure from above, causing a blockage. However, in the device of the present invention, an opening 6'a with a door 6' is formed on the side of the grooved bottom 2a, and a mud drainage groove 3' is provided on the side thereof, so that earth pressure is directly transmitted to the bottom of the ship. Of the mud in the groove-shaped bottom 2a, only the mud that has been melted and decomposed by the water flow in the mud drainage ditch 3' is smoothly drawn by the pump and discharged overboard. This sufficiently prevents the occurrence of blockage within the chamber.

As described in detail above, according to the flowing water type sludge removal device for an inboard mud hold of the present invention, a groove-like bottom extending in the ship's direction is provided at the lower part of the ship's mud hold, and the groove-shaped bottom is adjacent to the side of the ship's mud hold. It has a simple structure with a flowing water type sludge drainage groove extending in the direction of the ship's length, and a side opening with a door that guides mud from the grooved bottom to the flowing water type sludge drainage groove on the side, making it extremely efficient. This has the effect of allowing mud to be landed well and with high reliability.

[Brief explanation of the drawing]

Figures 1 to 3 show a conventional flow-through mud removal system for a ship's mud hold. Figure 1 is a side view, Figure 2 is a cross-sectional view, and Figure 3 is an enlarged view of the part shown in Figure 2. Figures 4 and 5 show a flowing water type mud removal system for an inboard mud hold as an embodiment of the present invention, Figure 4 is a cross-sectional view thereof, and Figure 5 is a cross-sectional view of Figure 4. FIG. 1... Hull, 2... Mud store, 2a... Grooved bottom,
3'...Sludge drainage groove, 6'...Door, 6'a...Side opening, 7'...Hydraulic drive device.

Claims (1)

[Scope of utility model registration request] The lower part of the mud hold inside the ship is provided with a groove-shaped bottom extending in the direction of the ship's ship, and adjacent to the side of this groove-shaped bottom, a flowing water mud drainage groove is provided that extends in the direction of the ship's ship. A flowing water type sludge removal device for a ship's mud hold, characterized in that a side opening with a door is provided for guiding mud to the flowing water type mud draining groove on the side.