JPH0139183Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a floating ball that is effective for floating a seaweed net stretched on a seaweed cultivation raft above the sea surface or sinking it into the sea.

When cultivating seaweed, drying out seaweed nets is an extremely important task both for obtaining high-quality seaweed and for preventing the occurrence of diseases in seaweed.

Conventionally, various float-type aquaculture rafts have been proposed for drying out seaweed nets. This float-type aquaculture raft allows the raft to float above the sea surface or sink into the sea by supplying and exhausting air to multiple floating balls attached to the bottom of the raft. It is something. However, since the seawater inlet and outlet of the floats attached to this floating raft are left open, even if the same amount of air is supplied to all floats, the weight of the raft will decrease. Since the amount of air differs from part to part, the amount of air in all the floats is not equal, making it difficult to provide uniform buoyancy to the entire raft, and also requiring a lot of time. In view of these problems, the present invention aims to provide a float for a seaweed cultivation raft that can quickly float a raft and provide uniform buoyancy to the entire raft.

The configuration of the present invention will be described below based on embodiments shown in the drawings.

FIG. 1 shows a state in which a floating ball 1 according to the present invention is attached to the lower end of a raft frame 2 constituting a seaweed cultivation raft, and the raft body is sunk in the sea. The raft body is constructed by connecting multiple raft frames arranged in parallel at appropriate intervals with ropes, and a seaweed net is stretched over the raft body.

The floating ball 1 is a hollow body formed in a spherical or cylindrical shape. The floating ball 1 is made of a synthetic resin material such as polyethylene or expanded polystyrene. A supply/exhaust port 12 to which a supply/exhaust pipe 3 is connected is provided in the upper part of the floating ball 1, and a seawater inlet/outlet 4 is provided in the lower part. A mounting recess 5 is formed in the upper part of the floating ball 1, and the lower end of the raft frame 2 is fitted and fixed into the mounting recess 5.

The other end of the supply/exhaust pipe 3 is connected to an air injection part 6 disposed around the raft body. The air injection part 6
The other ends of the air supply and exhaust pipes connected to each of the floats 1 attached to other raft frames are centrally connected to the floats. The air injection part 6 is preferably attached to a buoy floating on the sea surface. Further, the air injection section 6 is provided with an on-off valve 7. From the air injection section 6, compressed air is simultaneously supplied from a compressor (not shown) into each floating ball 1.

A spherical ball valve 8 that closes the water inlet 4 is freely movably housed inside the floating ball 1. The ball valve 8 may be hollow or solid, but is made of a material with a specific gravity lower than that of water.

A projecting piece 9 is formed at the lower end of the mounting recess 5 projecting into the inside of the floating ball 1 to restrict movement of the ball valve 8.

In the figure, 10 is a float that prevents the raft from sinking further into the sea than necessary, and 11 is a seaweed net.

Next, the operation of the floating ball 1 according to the present invention will be explained.

As shown in FIG. 1, when the raft is submerged in the sea and the seaweed net 11 is immersed in seawater, the floating balls 1 contain seawater. The ball valve 8 rises and stops against the protrusion 9.

When the valve 7 is opened to start the compressor and air is supplied from the air injection part 6 to the inside of the float 1 through the supply/exhaust pipe 3, the seawater inside the float 1 is pumped into the inlet/outlet 4 by the pressure of the air. is discharged from. When air enters the floating ball 1, buoyancy is applied to the floating ball 1, causing the raft to float. The ball valve 8 descends as the seawater is discharged, and closes the inlet port 4, as shown in FIG.

The pressure of the floating ball 1 whose filling port 4 is closed by the ball valve 8 becomes high. This increases the air supply to other floats that have not yet been filled with air. Therefore, even if the weight applied to the raft differs locally, a uniform buoyancy can be obtained.

Note that the floating ball according to the present invention is applicable not only to seaweed cultivation rafts but also to other floating type rafts.

The floating float for seaweed cultivation rafts of the present invention as described above is provided with an air supply and exhaust port for connecting a supply and exhaust pipe at the upper part, an inlet and an outlet at the lower part, and a spherical body inside which blocks the inlet and outlet. Since the ball valve is housed in a freely movable manner, it is possible to quickly levitate the raft and provide uniform buoyancy to the raft. Further, since the structure is simple, it can be manufactured at low cost.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is a front view of the floating ball with the raft sunk, and FIG. 2 is a front view of the floating ball with the raft floating. 1... Floating ball, 2... Raft frame, 3... Supply and exhaust pipe, 4
...Injection/drainage port, 8...Ball valve, 12...Support/exhaust port.

Claims (1)

[Scope of utility model registration request] A supply/exhaust port for connecting a supply/exhaust pipe is provided at the top, an inlet/outlet is provided at the bottom, and a spherical ball valve for blocking the inlet/outlet is freely housed inside. Floating balls for seaweed cultivation rafts.