JPS6031995Y2 - Powder carrier - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a granular material carrier, and more specifically, to a carrier ship that loads granular materials such as coal into a slurry, dehydrates the slurry, and transports the slurry.

Generally, coal is transported overland from coal producing areas to shipping ports.
Transported by sea from the port by ship.

Recently, in order to reduce land transportation costs and streamline loading at ports, powdered coal is dispersed in ice at coal producing areas to create coal slurry, and this coal slurry is loaded by pipeline. After being transported to a port, it is increasingly being loaded onto a carrier ship in slurry form.

On such carrier ships, in order to transport as much coal as possible, increase transport efficiency, and reduce transport costs, it is necessary to dehydrate the coal slurry as much as possible during loading, but coal slurry also contains fine coal particles. As explained below, dehydration is difficult.

In other words, the commonly used slurry dewatering method is
A drain with a filter is installed at the bottom of the hold, and water is drained downward through this drain. When this is applied to dewatering coal slurry that also contains fine coal particles, the water rises to the upper layer as the water dehydrates. The fine coal particles form a coating layer that covers the upper surface of the lower layer made of large-diameter coal particles, blocking the gaps within the slurry, that is, the water passages.

If this happens, the dehydration efficiency may decrease, or in extreme cases, the dehydration ability may become insufficient, making it difficult to dehydrate effectively.

This invention was made in view of the above-mentioned circumstances, and the object is to provide a powder and granular material carrier that can efficiently dewater the granular material loaded in the form of slurry.

This invention will be explained below with reference to drawings showing embodiments.

The carrier ship is equipped with a large number of holds 1 divided by transverse bulkheads, and although not shown, drain ports with filters are appropriately provided in the transverse bulkheads and bottom of each hold 1.

Each hold 1 is provided with an inclined ceiling wall 3 connected to the batch 2, and one end of a swinging arm 4 is attached to the lower part of the ceiling wall 3 so as to be able to swing vertically and laterally.

The swinging arm 4 has a plate shape, and a large number of stirring members 5 in the form of elongated downward projections are provided on the lower surface of the swinging arm 4.

Both upper and lower ends of a short guide pipe 7 that vertically passes through these are fixed to the upper part of the ceiling wall 3 and the upper deck 6 directly above the ceiling wall 3 which are spaced a predetermined distance from the attachment part of the swinging arm 4 in the width direction of the ship. There is.

In addition, both upper and lower ends of a long guide pipe 8 that vertically penetrates the lower part of the ceiling wall 3 and the upper deck 6 directly above it are located a predetermined distance away from the attachment part of the swinging arm 4 in the length direction of the ship. Fixed.

Pulleys (not shown) are attached to both upper and lower ends of these guide tubes 7.8.

The swinging arm 4 is connected to the first winch 9 installed on the upper deck 6.
A steel cable 10 is paid out for pulling it upward, which cable 10 passes through a short guide tube 7 and is connected to the swinging end of the swinging arm 4.

Further, a steel cable 12 for pulling the swinging arm 4 laterally is let out from a second winch 11 installed on the upper deck 6, and this cable 12 passes through a long guide tube 8 to swing the swinging arm 4. Connected to the moving end.

Devices similar to this are provided in other parts of the hold 1, and the number and arrangement of the devices are determined by taking into consideration the arrangement of drainage ports and the like.

Coal slurry is loaded into the hold 1 from above, and a portion of the slurry water is discharged through the drain port during the loading operation.

During the loading operation, the swinging end of the swinging arm 4 is hoisted up by the first winch 9, and the swinging arm 4 is retracted along the ceiling wall 3, as shown by the chain line in the drawing. There is.

After the loading of the coal slurry is completed, dewatering is carried out in the same manner as described above, but as the dehydration progresses, fine coal particles float to the upper layer and form a coating layer on the upper surface.

Therefore, when loading of the coal slurry is finished, the cable 10 is let out from the first winch 9 and the swinging arm 4 is rotated downward.

When the swinging arm 4 comes into contact with the top surface of the coal slurry, the cable 10 is let out from the first winch 9 and the cable 12 is wound around the second winch 11, whereby the swinging arm 4 is brought into contact with the top surface of the slurry. Rotate horizontally along the

Once the swing arm 4 has rotated to the bottom of the long guide tube 8, the cable 10 of the first winch 9 is wound up while the cable 12 of the second winch 11 is being let out, so that the swing arm 4 is free of the slurry. Rotate in the opposite direction along the top surface.

By swinging the swinging arm 4 along the top surface of the slurry in this way, the coating layer can be easily coated by stirring the coating layer with the stirring member 5, which improves air permeability.
When slurry water is discharged from the drain port, air inflow is not obstructed and smooth dewatering can be performed.

When the dehydration is completed, the swinging arm 4 is hoisted up by the first winch 9 and stored along the ceiling wall 3.

The configurations of the swinging arm 4 and the stirring member 5 are not limited to those of the above embodiment, and can be modified as appropriate.

In the above embodiment, the swinging arm 4 is pulled laterally by one rope 12, but for example, two second winches 11 are installed on the upper deck 6 in front and behind the swinging arm 4, and these winches are The two cables 12 let out from the winch 11 may be used to pull the swing arm 4 from both sides.

Furthermore, this invention can be applied to ships carrying powder and granular materials other than coal.

As described above, according to the powder and granular cargo carrier of this invention, the swinging arm 4 is attached to the lower part of the inclined ceiling wall 3 of the hold 1 so as to be able to swing vertically and laterally. 4 is provided with a stirring member 5, and a cable 10 for pulling the swinging arm 4 upward and a cable 12 for pulling the swinging arm 4 laterally.
are connected to each other, so by swinging the swinging arm 4 along the coating layer of fine particles formed on the top surface of the powder and granules that have been turned into slurry and loaded into the hold, this coating layer can be removed. By destroying the powder, the air permeability of the powder and granules can be improved, and efficient dehydration can be performed, and the swinging arm 4 can be stored along the inclined ceiling wall 3 when not in use.

[Brief explanation of the drawing]

The drawing is a perspective view showing a part of the carrier according to this invention. 1... hold, 3... ceiling wall, 4...
... Swinging arm, 5... Stirring member, 10, 12.
・・・・・・Cable.

Claims (1)

[Scope of utility model registration request] A swinging arm 4 is attached to the lower part of the inclined ceiling wall 3 of the hold 1 so as to be able to swing vertically and laterally. A powder and granular material carrier to which a cable 10 for pulling upward and a cable 12 for pulling a swinging arm 4 laterally are connected.