JPS61257522A - Water curtain-type preventer for diffusion of turbid water - Google Patents

Abstract

PURPOSE:To exactly prevent the occurrence of turbid water by keeping the direction of jet stream vertically by a method in which a water curtain is formed between a nozzle pipe and a suction duct in such a way as to prevent diffusion of turbid water by vertically partitioning the water. CONSTITUTION:Plural nozzles 2 are provided by turning their ports downwards for the downside of a cylindrical nozzle pipe 1. A slender box-like suction duct 5 whose upside is opened is vertically hung down by a rope 6 in the face of the nozzle pipe 1. A water curtain is formed of jet stream from nozzles 2 between the pipe 1 and the duct 5. The lateral flow of the water curtain by tidal current, etc., can be prevented by fixing the skirt portion of the curtain to the suction duct 5. Since the water curtain is strong enough to withstand tidal current, it can be laid in wide ranges.

Description

[Detailed Description of the Invention] LLI Standing Plate ■ Spot 1 The present invention prevents situations such as floating mud, etc. generated by underwater construction such as dredging and reclamation flowing out and spreading outside the construction area and contaminating fishing grounds. Alternatively, the present invention relates to a device that prevents pollution from spreading by using a water curtain to prevent polluted water from entering from outside.

In order to prevent the spread of pollution generated from underwater construction areas, there is a precedent example of forming a water curtain around the underwater construction area to prevent pollution from spreading.

An example is shown in FIG.

01 is a nozzle pipe, which is supported on the water surface by support means (not shown).

A large number of nozzles 02 are arranged on the lower surface of the eve 01 at predetermined intervals in the longitudinal direction, so as to jet water downward into the water.

The discharge side of a hydraulic pump 04 is connected to the end of the nozzle pipe 01 via a pipe 03.

In the figure, the water area on the right side of the nozzle pipe 01 is the water area where underwater construction will be performed, and is intended to be separated from the water area B on the left side.

By driving the water pressure pump 04, water from the water area B is sucked up and sent to the nozzle pipe 01 via the piping 03.
From 2, a jet stream is formed downward into the water.

A water curtain is formed in the water by jetting water from a number of nozzles 02 arranged in the longitudinal direction of the lower surface of the nozzle vibe 01, and a water curtain is formed in the water, dividing the construction area from the water area B outside of it, and floating mud is generated on the water area A side. This is to prevent the spread of water into water area B.

]l゛'siyo and I+ However, in this conventional example, when used in sea areas with fast tidal currents, the jet stream from nozzle 02 is pushed aside by the tidal currents, not shown by the arrows, as shown in Figure 5. There was a drawback that it became in a sleeping state, impairing its role as a water curtain.

The present invention was developed in view of the above, and its purpose is to provide a suction duct below the nozzle vibrator so that the direction of the jet flow from the nozzle can be kept as direct as possible against the tidal current. The present invention provides a water curtain type pollution diffusion prevention device.

The present invention comprises: a nozzle vibrator equipped with a large number of nozzles facing in the F direction at predetermined intervals in the longitudinal direction of a tubular body; A suction duct 1 for receiving and suctioning water spouted from the nozzle, a water pressure pump whose discharge side is connected to the nozzle vibe and operates the suction duct, and a water pressure pump that supports the nozzle vibe on the water surface and operates the suction duct. and support means for supporting the device in the water below.

Water is jetted from the nozzle of the nozzle vibrator by driving the submersible pump, and the jetted water is guided vertically downward to the suction duct, so that the direction of the jet flow can be kept as vertical as possible. This makes it possible to more effectively prevent the diffusion of contaminants in water.

An embodiment of the present invention illustrated in FIG. 1 will be described below.

Reference numeral 1 denotes a nozzle vibrator having a cylindrical shape, and a plurality of nozzles 2 are arranged on the lower surface thereof with their mouths facing downward.

The upper surface of the nozzle vibe 1 is fixed to a tubular float 4, and the nozzle vibe 1 is supported by the tubular float 4 at a position at the water surface TI-number+car.

A nozzle 5 (a suction duct in the form of a round box with an open upper side vertically downward facing the eve 1) is suspended by a row 16.

The upper end of the row 16 is attached to protrusions 3 provided at several locations on the lower surface of the nozzle vibe 1 along with the nozzle 2, and the lower end of the row 16, which is divided into two, is attached to the upper edge of the side root of the suction duct 5.

There is a notch in the center of the lower surface of the suction duct 5, and a water collector 7 is provided.
is attached.

A pipe 10 is connected to one end of the nozzle vibe 1 and connected to the discharge side of a hydraulic pump 8, and the suction side of the nozzle vibe 1 is connected to the water collector 7 attached to the suction duct 5 and the pipe 10. Strainer for removing dust etc.
They are connected via 9.

Therefore, by driving the water pressure pump 8, water can be sent to the nozzle vibe 1 and sprayed downward from the nozzle 2. This sprayed water reaches the suction duct 5 located below and is sucked into the pipe. After removing dirt such as dirt with a strainer 9 through the water pressure pump 8
is sucked into the suction side of the nozzle vibrator 1 and sent to the nozzle vibe 1 again.

In this way, the flow of water is as follows: water pressure pump 8, nozzle vibe 1,
It circulates in the order of suction duct 5, strainer 9, and hydraulic pump 8.

A water curtain is formed between the nozzle vibe 1 and the suction duct 5 by the jet flow from the nozzle 2.

The tip of this jet stream is drawn into the water stream formed by being sucked into the suction duct 5, and the water curtain looks like the upper and lower ends of the nozzle vibrator 1.
and is in a state of being fixed by the suction duct 5.

Therefore, in the sea, unless the current is very strong, the end of the jet flow, that is, the hem of the water curtain, will not be swept sideways by the current, and the curtain will not function as a curtain.

By providing the suction duct 5 in this way, the water curtain can be strengthened and the effect of blocking polluted water can be enhanced.

Also, since the suction side of the water pressure pump is used, the water pressure pump is effectively utilized.

In this embodiment, the nozzle pipe 1, the suction duct 5, etc. are made substantially straight, but it is also conceivable that the ends are connected to each other to form a closed region C, as shown in FIG.

It is possible to confine contamination sources such as construction sites in this closed area C and prevent the pollution from spreading to the outside, or to prevent pollution from external areas other than the closed area C from spreading to the r'J1 area C.

Next, another eggplant example will be explained based on FIG.

In the embodiment described above (see FIG. 1), the water sucked into the suction duct 5 is returned to the water pressure pump 8 through the pipe 10 and circulated again, but in this embodiment, a water collector attached to the suction duct 5 is used. An ejector 11 is installed below the cylinder 7.

The water pressure pump 8 is designed to send water to the nozzle vibe 1 and also to the ejector 11 via a pipe 12 and discharge it from below, and this discharge flow creates a suction force that causes the suction duct 5 to suck water. It was designed to let you do so.

In this embodiment, clean water can always be supplied to the nozzle vibe 1, so that the water curtain itself does not contain contamination, thereby preventing secondary contamination and further improving the effect of blocking contaminated water.

Further, as in the previous embodiment, it is also possible to connect both ends to form an endless shape and form a closed region.

In the above embodiment, one water collector 7 was provided below the suction duct 5, but if the water collector 7 is installed over a long distance, multiple water collectors 7 may be provided at appropriate intervals. Each may be correspondingly provided with a pipe and an ejector.

1. By providing a suction duct below the nozzle vibrator, the hem of the water curtain can be fixed to the suction duct to prevent crossflow due to tidal currents, etc.
It is possible to improve the pollution diffusion prevention effect.

Since water curtains are resistant to tidal currents, they can be installed in a wide range of locations.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of an embodiment according to the present invention, Fig. 2 is an explanatory diagram of another embodiment, Fig. 3 is an explanatory diagram of another embodiment, and Fig. 4 is an explanatory diagram of another embodiment.
The figure is an explanatory diagram of a conventional prior example, and FIG. 5 is a sectional view thereof. 1... Nozzle vibe, 2... Nozzle, 3... Protrusion, 4... Tubular flow 1~. 5... Suction duct, 6.
... Rope, 7... Water collector, 8... Water pressure pump, 9
...Strainer-110...Pipe, 11...Ejector, 12...Pipe.

Claims (1)

[Claims] A nozzle pipe having a plurality of nozzles facing downward at predetermined intervals in the longitudinal direction of a tubular body, and a suction duct located below opposite to the nozzle pipe to receive and suck water spouted from the nozzle. , a water pressure pump having a discharge side connected to the nozzle pipe and operating the suction duct, and a support means supporting the nozzle pipe on the water surface and supporting the suction duct in water below, the nozzle pipe and the suction duct being connected to each other. A water curtain-type underwater pollution diffusion prevention device that forms a water curtain between the suction duct and partitions the water on a vertical surface to prevent the spread of pollution in the water.