JPS592678B2 - Seabed sediment collection vessel - Google Patents

Description

[Detailed description of the invention] The present invention relates to a seabed sediment recovery vessel.

Recently, nets have been set up offshore and near the coast to serve as fish farms.

In such fish farms, the fish eat the input food before it reaches the sea bed, and have a habit of not eating the food once it reaches the sea bed.

Furthermore, feed is not distributed evenly throughout the fish farm, but in large quantities at multiple locations.

Therefore, a large amount of food reaches the ocean floor, which becomes sediment on the ocean floor and causes pollution.

The present invention particularly proposes a seabed sediment collection vessel that can easily and reliably collect seabed sediments as described above and can rapidly process them.One embodiment of the ship will be described below with reference to the drawings. .

1 is a net stretched through floats 2 and weights 3, forming a fish farm 4.

Reference numeral 5 denotes a sediment collection device capable of settling to the seabed, and a discharge pump 8 is provided inside a hollow cone body 7 having a plurality of fixing claws 6 on the lower edge.

A propeller 9 is an example of a stirring device, and is interlocked with the discharge pump 8.

Reference numeral 10 denotes a work boat having a compression type filter 11, and this compression type filter 11 and the discharge port 8a of the discharge pump 8 are connected through a transfer hose 12.

That is, there is a pair of compression filters 11 in the direction of the ship (this number is not limited to either single or multiple).

) are provided, and a pair of fixed box parts 13A are provided in the bow and stern direction, respectively.
, 13B, 14A, , 14B, and each set of fixed box parts 13A, 13B, 14A.

Rails 15.16 provided across 14B, and compression plates 17.18 that move while being guided by these rails 15.16.
, compression plates 17, 18 and fixed box parts 13A, 13B, 14
Fiber filters 19A and 19B in the form of bellows rectangular cylinders are provided between the fiber filters 19A and 14B.

20A, 20B, and each fixed box part 13A, 13B.

Piping 21 communicates the upper inlets of 14A and 14B, and an opening/closing valve 22A is provided with 21t of piping for each fixed box portion 13A, 13B, 114A, 14B to correspond to the husband and wife.

22B, 23A, and 23B, and each fixed box part 13A, 13B, 14A, and 14B is provided with a compressed cake outlet (not shown), respectively.

The transfer hose 12 can be wound up and fed out by a drive type reel 24 provided on the upper deck, and its base end communicates with the piping 21 via a relay hose 25.

An actuating device 26 is provided for moving and raising and lowering the deposit collecting device 5.

That is, the work boat 10 has a crane 27, the free end of a suspension rope 29 hung on the transport body 28 at the tip of the arm is fixed to the upper part of the hollow cone 7, and the base end is attached to the winch on the work boat 10. It reaches 30.

A valve 31 is provided in the transfer hose 12 , and above this valve 31 an air supply device 32 to the hollow cone 7 is provided.

This air supply device 32 includes an air supply device 33 and a valve 34.
It consists of a ventilation hose 35 having a

The actuating device 26 is constituted by the above 27 to 35.

In the state shown in FIGS. 1 and 2, the sediment collection device 5 is in the sediment 36, so when the discharge pump 8 is activated, the sediment in the hollow cone 7 is stirred by the propeller 9, and After being sucked in by the discharge pump 8, it is transferred to the compression filter 11 via the transfer hose 12 and the relay hose 25.

Now, in FIG. 3, in the compression type filter 11, the on-off valves 22A, 23A, and 23B are closed, and the on-off valve 22B is closed.
is open, the compression plate 18 that approaches the fixed box part 14B side stops, and the compression plate 17 moves towards the fixed box part 13A side.

Therefore, the fiber filter 20A is filled with highly water-containing deposits, and the fiber filter 20B contains a compressed cake after dehydration.

On the other hand, highly water-containing sediment flows into the fiber filter 19B through the on-off valve 22B as it expands, and since the on-off valve 22A on the fiber filter 19A side is closed, dehydration occurs as the fiber filter 19B contracts. It is being done.

While the fiber filters 19A and 19B are in operation, the compressed cake in the fiber filter 20B is taken out and treated as appropriate, for example by storing it in a container installed on the upper deck.

When the compression of the fiber filter 19A is completed, the on-off valve 22B is closed, the on-off valve 23B is opened, and the movable plate 18 is moved toward the fixed box portion 14A.

As a result, the fiber filter 20B is supplied and the fiber filter 2OA is compressed.

Looking at the above example in the compression process, 20B → 19A → 20A
→19B This is a four-cycle type that is performed sequentially, but this is the opening/closing valve 22A, 22B, 23A.

Depending on the operation of 23B, each compression filter 11 can be operated separately.

To move the sediment recovery device 5 (including initial settling), first close the valve 31, and then open the valve 34 while the ventilation device 33 is operated.

Then, air flows back through the transfer hose 12 and reaches the hollow cone γ.
The hollow cone 7 is suspended in a constant state.

In this state, move the crane 27 to the target position,
Thereafter, the valve 34 is closed and the valve 31 is opened to remove air, thereby settling and returning to the initial state.

Incidentally, the sediment collection device 5 can be pulled up by winding up the suspension rope 29 with the winch 30 and winding up the transfer hose 12 with the reel 24.

Note that the compression type filter 11 may be covered with a cover member (not shown), and the filtered water is either dumped as is or sent to a water treatment facility (not shown) installed in the work boat 10. Sent.

The compression type filter 11 can be seen on the upper deck in FIG. 3, but this is a case where other equipment is provided in the hold, which is normally installed in the hold.

As described above, according to the present invention, when recovering accumulated bait at a fish farm, for example, after operating the winch and sinking the hollow cone into the sea, one opening/closing valve is opened and the pump is turned on. All you have to do is activate it.

The accumulated bait is then sucked into the pump and thrown into one of the filters from one of the fixed box sections via a hose and piping.

When the input amount becomes constant, one opening/closing valve is closed and the other opening/closing valve is opened, and the bait is introduced into the other filter from the other fixed box part.

Also, as a result of this, the bait put into the ρ filter is compressed and dehydrated by the movement of the compression plate.

Therefore, the dehydrated bait can be efficiently recovered from inside the filter.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a schematic perspective view;
FIG. 2 is an explanatory diagram of the sediment collection device section, and FIG. 3 is a perspective view of the work boat section. 1... Net, 4... Fish farm, 5...
...Sediment collection device, 7...Hollow cone, 8.
...Discharge pump, 10... Work boat, 1
1... Compression filter, 12... Transfer hose, 13A, 13B, 14A, 14B. ...Fixed box part, 17.18... Compression plate, 19A. 19B, 2OA, 20B... fiber filter,
21...Piping, 22A, 22B, 23A, 23
B... Opening/closing valve, 26... Actuating device, 27... Crane, 29... Suspension rope,
32... Air supply device, 36... Sediment.

Claims (1)

[Claims] 1 Consists of a compression type filter installed on the ship side, a sediment recovery device that can settle to the seabed, and an actuation device that moves and raises and lowers the sediment recovery device. A pair of fixed box parts provided at a distance from each other, a compression plate movably disposed between the two fixed box parts, and a bellows-shaped fiber filter provided from the compression plate to each fixed box part. , a pipe that connects both fixing box parts with each other, and opening/closing valves provided at both ends of the pipe, and the sediment collection device includes a hollow cone with an open bottom and a pipe inside the hollow cone. a discharge pump disposed at the center, a transfer hose that communicates the discharge port of the pump with the center of the piping, and the actuation device includes a crane whose tip protrudes outside the ship; , a seabed sediment recovery system comprising: a winch; and a suspension rope that is wound around a take-up drum of the winch and whose tip is fixed to the upper part of the hollow cone via a transport body at the tip of the crane. ship.