JPS5822398B2 - Consolidated cargo reslurry equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a consolidated cargo reslurry apparatus.

When transporting iron ore powder by sea, the powdered iron is loaded in the form of slurry into the hold of a slurry carrier at the loading port.

During the transport voyage, the slurry loaded in the ship's hold settles due to the difference in specific gravity between the powdered iron and the water, becoming dehydrated and consolidated.

[7] Therefore, a re-slurry device for consolidated cargo is installed in the hold for the purpose of unloading such compacted cargo.

This reslurry device consists of a well provided in the bottom plate of the cargo hold and a fluid injection nozzle provided in the center of the well. Usually, the fluid injection nozzle is rotatable around a vertical axis and is attached to the inside of the well and the bottom of the cargo hold. It is possible to move up and down between the two.

During loading and transportation of slurry, the fluid injection nozzle is housed in the well, and when the shredded consolidated cargo is reslurried, the fluid injection nozzle is protruded to the bottom of the hold, and the fluid injection is used to break up the cargo and re-slurry it. The slurry is made into a slurry, flowed into a well, and then unloaded through an unloading pipe.

The well of the reslurry device thus has the dual function of housing the fluid injection nozzle and collecting the slurry produced by the reslurry for delivery to the unloading piping.

However, in conventional reslurry equipment, the fluid injection nozzle is retracted only by retracting it into the well, and no other measures are taken, so the slurry loaded in the hold does not flow into the well. Not only does it get inside, but it also gets inside the fluid injection nozzle.

Vibrations and oscillations of the ship's hull during sea transportation result in a compacted state within the well and nozzle.

For this reason, at the time of unloading, it became necessary to excavate and remove the consolidated cargo in the well and nozzle before re-slurrying the consolidated cargo in the hold, and this took a long time, so it took a long time to unload the cargo. Waste could not be avoided.

The present invention has been made in view of these points, and embodiments thereof will be described below based on the drawings.

1 is a hold of a slurry carrier, and the bottom plate 2 of this hold 1 is
The reslurry device 3 according to the present invention is installed at several locations on the double-bottom inner plate constituting the reslurry device.

The reslurry device 3 has a well 4 provided in the hold bottom plate 2 and a nozzle block 5 that can move up and down between the well 4 and the bottom of the hold. When loading slurry and transporting it by sea, the nozzle block 5 is stored in the well 4, and when unloading and re-slurrying, the nozzle block 5 is protruded to the bottom of the hold as shown in Figure 1. The high-pressure jet water 7 is injected from the internal nozzle 6.6, and at the same time, the nozzle block 5 is rotated around its axis to cut down and excavate the surrounding consolidated cargo 8), and the resulting slurry is re-slurried into the well 4. After flowing into the well 4, the cargo is unloaded through the unloading pipe 9 connected to the well 4.

The nozzle block 5 has a widening part 11 on a vertical cylindrical part 10.
A conical apex 12 is provided through the nozzles 6.6, and a pair of nozzles 6.6 are installed at mutually point-symmetrical positions inside.

The base end portions 6A6A of these nozzles 6.6 are opened inside the nozzle block 5, and the tip portions 6B, 6B are open in the vertical cylindrical portion 1.
It is attached to the side wall of 0 and opens outward.

At the bottom of the nozzle block 5, a fluid (water) pressure feeding conduit 13 is provided extending vertically downward, and the lower end of this fluid pressure feeding conduit 13 is connected to the fluid feeding tube via a rotary joint (not shown). The fluid pressure supply conduit 13 is also connected to a rotary drive device and a piston rod of a hydraulic or pneumatic cylinder device (none of which are shown).

) are interlocked so that the nozzle block 5 can be rotated around the axis and moved in and out and up and down.

14 is Grand Packkin.

Reference numeral 15 denotes an egress hole 16 that allows the nozzle block 5 to move upward and downward.
This is a lattice-shaped plate body which has the same structure as the hold bottom plate 2 and is provided at the upper opening of the well 4 at the same level as the hold bottom plate 2, and this lattice-shaped plate body 15 is
As shown in FIGS. 4 to 4, rectangular openings 17 are provided at predetermined intervals vertically and horizontally in a plan view, and the openings 17 are formed so that the opening area of the upper crosspiece is narrow.

Seal packings IS and IS are provided around the exit/retreat hole 16 and around the opening 11, respectively.

A movable lattice-like lid 20 is provided below the lattice-like plate 15.

As shown in FIGS. 2, 3, 5, and 6, this movable lattice-like lid 20 has a large number of openings 1 in the lattice-like plate 15.
A large number of protrusions 21 each having a trapezoidal cross section correspond to each of 7.
and a through hole 22 between the protrusions 21 arranged in the vertical direction.
It becomes.

Brackets 23 are fixed at 04 positions at equal angles on the concentric imaginary circumference of the lower surface of the movable lattice plate 20, and the tips 24A of the double bending links 24 are pivotally supported on these brackets 23.

The base end portions 24B of the double bending links 24 are each pivotally supported by brackets 27 at four locations on the upper part of a mounting frame 26 that is erected from the bottom plate 25 of the well 4 to surround the fluid pressure conduit 13. , the base end protrudes further inward from the pivot portion.

A stopper fitting 28 is provided protrudingly at a predetermined location in the middle of the inner circumferential height of the well 4 to set a lowering limit of the movable lattice plate 20.

Furthermore, annular metal fittings 29 and 30 are fixed to the upper and lower sides of the fluid pressure feeding conduit 13, respectively, and the upper annular metal fittings 29, as shown in FIG. The proximal protruding portion 24C of the bent link 24 is pushed down from above, and the outer surface of the protrusion 21 of the movable lattice-like lid body 20 is sealed around the opening 17 of the lattice-like plate body 15 via the double bending link 24. It is provided at a position where it can come into pressure contact with 19.

Further, as shown in FIG. 3, the lower annular metal fitting 30 is connected to the double bending link 20 when the movable lattice-like lid 20 is at its upper limit during its ascent when the nozzle block 5 protrudes to the bottom of the hold 1. The movable lattice-like lid body 20 is provided at a position where the proximal end protruding portion 24C can be kicked up from below and the movable lattice-like lid body 20 can be forcibly lowered via the double bending link 24.

In this way, the movable lattice-like plate 20 descends and rises in conjunction with the movement of the nozzle block 5 into and out.
When the nozzle block 5 is moved in and out of the well 4 and the outer periphery of the expanded portion 11 of the nozzle block 5 is brought into pressure contact with the seal packing 18 around the exit/exit hole 16 of the lattice-like plate 15, the movable lattice-like lid 20 The outer surface of the protrusion 21 is also pressed against the seal packing 19 around the opening 17 of the lattice plate 15,
The inside of the hold 1 and the inside of the well 4 are completely shielded, but in the unlikely event that this shielding is not completely done, the slurry is collected in the well discharge pipe 31 as shown in Figure 1. A chamber 32 is interposed therebetween, and a slurry return pipe 33 to the hold 1 is communicated with the collection chamber 32 .

In the above, prior to slurry loading, the nozzle block 5 is stored in the well 4 as shown in FIG. 29 pushes down the proximal end protrusion 24C of the double bending link 24, the movable lattice-like plate 20 rises, and the opening 17 of the lattice-like plate 15 is closed by the protrusion 21.

If the slurry in the well 4 leaks during transportation after loading, it is collected in the slurry collection chamber 32 through the discharge pipe 31 and then returned into the hold 1 through the return pipe 33.

Next, to re-slurry the consolidated cargo 8, as described above, the nozzle block 5 is raised to the bottom of the hold 1, and the nozzle 6.
Perform this by spouting high-pressure jet water from step 6.

When the nozzle block 5 is raised, the downward force applied to the proximal end protrusion 24C of the double bending link 24 of the upper annular fitting 29 is released, and accordingly, the movable lattice-like lid 20
hits the stopper metal fitting 28 due to its own weight and descends.

At this time, if the protrusion 21 comes into close contact with the seal packing 19 during a long voyage and does not lower under its own weight, the lower annular fitting 3
0 kicks up the proximal end protrusion 24C of the double bending link 24 and forcibly lowers the movable lattice-like lid 20.

The slurry generated by reslurrying passes through the openings 17 of the grid plate 15, flows into the well 4, passes through the discharge pipe 31, and is unloaded by the unloading pipe 9.

As described above, according to the present invention, the holes in the lattice plate are opened and closed in conjunction with the arrival and departure of the nozzle block between the ship's hold and the well. enters the well and nozzle, thus eliminating the need to excavate the consolidated cargo in the well and nozzle prior to reslurrying the consolidated cargo.

Therefore, unloading can be carried out efficiently in a short period of time.

Further, since the nozzle is housed inside the nozzle block, the nozzle can be protected from the weight of the consolidated cargo.

[Brief explanation of drawings]

Figures 1 to 6 show embodiments of the present invention, with Figure 1 being a cross-sectional view of a slurry carrier, Figures 2 and 3 being a longitudinal side view of a re-slurrying device, and Figure 4 being a cross-sectional view of a re-slurrying device. The same plan view, FIG. 5 is a partial plan view of the movable lattice-like lid body 20, and FIG.
-A arrow view. DESCRIPTION OF SYMBOLS 1... Hold, 2... Hold bottom plate, 3... Re-slurry device, 4... Well, 5... Nozzle block, 6
...Nozzle, 8... Consolidated cargo, 11... Expansion part of nozzle block 5, 13... Fluid pressure feeding conduit, 15...
・Lattice plate, 16... Exit hole, 17... Opening hole, 1
8... Seal packing, 20... Movable lattice lid body (
Movable lid body), 21...Protrusion, 24...Double bending link, 28...Stopper metal fitting, 29...Upper annular metal fitting, 30...Lower annular metal fitting.

Claims (1)

[Claims] 1. A well provided at the bottom of the hold, a nozzle block that allows entry and exit from work between the well and the hold, and an entry/exit hole for the nozzle block, and provided at the upper opening of the well at the same level as the hold bottom plate. A sealing pad is disposed around the exit/exit hole of the lattice plate, and the outer periphery of the nozzle block comes into pressure contact with the nozzle block when the nozzle block moves in and out of the well, and below the lattice plate, A reslurry apparatus for consolidated cargo, characterized in that a movable lid is provided to open and close the openings of the grid-like plate, and the movable lid is linked to the nozzle block.