JPS5919755B2 - Collection device for fluid suspended matter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for collecting fluid floating substances such as oil spilled onto an external water surface such as the sea surface, and its purpose is to recover the water that is discharged to the outside. To provide a fluid floating matter collection device capable of efficiently collecting floating matter without any floating matter being mixed therein.

An embodiment of the present invention will be described in detail below with reference to the drawings.

Reference numeral 1 denotes an inlet provided in the recovery and separation tank 2. An inlet plate 4 is formed extending approximately horizontally in front of the inlet 1, and emulsion prevention plates 5, 5 are provided at the bottom of the inlet 1 in a slightly downwardly downward direction.
A is arranged in two layers, and a grid plate for removing dust is further arranged at the inlet 1 as necessary.

The recovery and separation layer 2 is formed in the shape of an ark with a deck 6 on the upper surface, and a separation floating material layer 7 is integrally formed on both sides and the rear outer periphery.

The recovery/separation tank 2 having the separated floating material layer 7 integrally is disposed between both bodies 3 a and 3 b of the catamaran 3 .
One end of the arms 9, 9 is pivotally supported by the upper Q support stands 8, 8, and the other ends of the arms 9, 9 are pivoted to the side of the recovery separation tank 2, thereby being supported by the catamaran 3, and further supported by the support stands 8, The support shafts 10 and 10 of the arms 9 and 9, which are supported by
When rotated by a crank mechanism 12 operated by a crank mechanism 12, the collection and separation tank 2 can be freely moved up and down with respect to the catamaran 3.

Inside the recovery and separation tank 2, there is a baffle plate 13a having an upper end surface that is approximately the same height as the lower surface of a layer of floating matter A such as oil in the upper part of the recovery and separation tank 2.

13b and baffle plates 14a and 14b having upper end surfaces slightly higher than the upper end surfaces of the baffle plates 13a>13b are alternately spaced apart perpendicularly to the inflow direction of the floating matter A, and the first baffle plate 13a , 13b are formed to partition the lower part of the recovery/separation tank 2, and water flow holes 15, 15 are formed on the lower end side so as to alternate left and right, so that water B such as seawater flows through the lower part of the recovery/separation tank 2 from side to side. The water is designed to flow along a zigzag water flow path X and pass through the water flow holes 15, 15 of the baffle plates 13a, 13b.

Further, the lower end of the second baffle plate 14at14b is formed in a completely open shape to form the baffle plate 14a.

The lower part of 14b is designed to serve as water flow path X.

This is to suppress the flow of water B in the recovery separation tank 2.

(The solid line arrows in FIGS. 6 and 7 indicate the flow of water B in the lower part of the recovery and separation tank 2, and the chain line arrows indicate the flow of suspended matter A in the upper part of the recovery and separation tank 2.

) The emulsion prevention plates 5, 5a are arranged in two layers protruding inwardly from the inlet 1 while being inclined diagonally downward, and the emulsion prevention plates 5, 5a have small holes 16 with a diameter of about 1cIfL. A collection and separation tank 2 is provided with a large number of holes, and a collection and separation tank 2 is constructed so as not to disrupt the layered state of fluid suspended matter A such as oil and water B flowing in upper and lower layers from the inlet 1.
Only water B is allowed to flow into the small hole 16...
・The suspended matter A flows down to the water layer in the recovery separation tank 2, and the floating matter A flows down along the emulsion prevention plate 5.5a while maintaining the layer state, and directly flows into the floating matter A layer. External water surface L2 Lower water surface L1 inside the recovery separation tank 2
Floating material A due to impactful agitation when floating material A flows down
This prevents emulsification (turbidity).

Further, in the above embodiment, two emulsion prevention plates 5 are used.
, 5a, but one or more emulsion prevention plates may be provided, and the emulsion prevention plate 5 above the two emulsion prevention plates 5, 5a has a slightly large hole. 16....... are bored in the lower emulsion prevention plate 5a, and slightly smaller small holes 16...... Good separation from B.

Reference numeral 17 denotes a water reservoir serving as an external discharge part for water B. Water B flowing through the water flow path A throttle plate 18 is installed as a bridge in a slightly inclined state above the water flow hole 15 and the water inlet 17a, and this throttle plate 18 allows the water flow between the rearmost baffle plate 13b and the water reservoir 17. The upper part of Road X is covered.

Further, this diaphragm plate 18 is provided with a large number of small holes 18a.

Reference numeral 19 denotes a floating matter recovery port that communicates the recovery and separation tank 2 with the separated floating matter tank 1, so that the floating matter A in the upper layer of the recovery and separation tank 2 is caused to flow down from the floating matter recovery port 19 into the separated floating matter tank 7 by overflow. This floating material collection port is located at 19°19
Recovery and take-out valves 20, 20 are disposed in the .

Reference numeral 21 denotes a rising opening provided at the rear of the deck 6 of the recovery separation tank 2, which is divided into a floating object opening 21a that communicates with the separated floating object tank 1 and a water opening 21b that communicates with the water reservoir 17.
It is surrounded by a wall 22 such that the upper end opening is at a higher position than the external water surface L2.

Further, a floating matter suction pipe 23 and a drainage pipe 24 are inserted into the floating matter opening 21a and the water opening 21b, respectively.

Further, 25 and 26 are pumps for suctioning floating matter and for sucking water, and a filter 27 is inserted in the middle of the drain pipe 24.

According to the present invention, the catamaran 3 is sailed to the floating object collection position, and at this position, the hydraulic cylinder 11 is driven to lower the collection and separation tank 2.

At the same time, the hot water valve 29 is opened by the bundle 28,
The collection and separation tank 2 is filled with seawater up to a predetermined water level, and the collection and separation tank 2 is lowered until the upper surface of the inflow plate 4 is located below the suspended solids layer on the external water surface L2. When it is fixed at , floating substances will begin to flow into the recovery and separation tank 2 from the inlet 1 together with water such as seawater while maintaining a layered state.

In this state, stop the catamaran 3 or change the catamaran 3 by 0.5
The vessel collects objects floating on the water surface while moving forward at a slow speed of about 2 knots.

On the other hand, the action of the emulsion prevention plates 5 and 5a prevents emulsification (turbidity) and allows the suspended matter and water to flow into the collection and separation tank 2 while maintaining a layered state in a quasi-static state. Floating matter A and water B are separated into upper and lower layers in a recovery separation tank 2.

The suspended matter A separated into layers in the upper part of the recovery separation tank 2 flows down from the floating matter collection ports 19, 19 at the upper part of the recovery separation tank 2 into the separated floating matter tank 7, and this separated floating matter tank T is filled. The floating matter A is sucked in by the pump 25 via the floating matter suction pipe 23, and collected in the floating matter tank 31 in the catamaran 3 hull 3ay3b.

On the other hand, the water B in the lower part of the recovery separation tank 2 is supplied to the first baffle plate 13a.

13b water flow hole is, is, and second baffle plate 14a
The water flows through the water channel X passing through the lower part of t 14 b, is guided to the water reservoir 17 at the rear of the recovery and separation tank 2, is sucked in by the pump 26 via the drain pipe 24 and filter 27 as appropriate, and is discharged to the outside.

Here, as described above, a throttle plate 18 is installed as a bridge between the rear surface of the baffle plate 13b at the rearmost end of each baffle plate 13a>13b, 14aj 14b and the front wall of the water reservoir 17. The upper surface portion of the water flow path X is covered by the throttle plate 18 near the inlet of the water reservoir 1T, which is the discharge portion.

Since the throttle plate 18 has a large number of small holes 18a as described above, it has the function of sucking and circulating the water B above the throttle plate 18 to a certain extent into the water reservoir 17.
It has the effect of increasing the flow resistance of the water and preventing ρ from causing turbulence at the layered interface between the suspended matter A and the water B, and when the water B above the diaphragm plate 18 is sucked and distributed into the water reservoir 17, this It has the effect of coarsening the floating matter A such as oil mixed in the water B at the passage portion of the small hole 18a, and causing it to separate and float due to the buoyancy of the floating matter A itself.

In the figure, 30 is a suction plate disposed on the upper surface of the inflow plate 4 as required, and 32 is a bundle used when manually opening and closing the recovery/output valves 20, 20 described above.

As described above, the present invention adds a collection separation tank between both sides of the catamaran, so the collection separation tank can be made self-propelled, and the collection separation tank is stable and can be used at floating material collection sites. It has the effect of being able to efficiently collect suspended matter in the collection and separation tank by self-propelled, and also has a flat plate shape with many small holes at the external discharge part of the water from the collection and separation tank. Since the throttle plate is arranged approximately horizontally, when the water above the throttle plate in the water flow path is sucked into the external discharge part, the flow resistance of the water is greatly increased by the throttle plate, so that the water suddenly flows out. This has the effect of eliminating turbulent flow on the lower surface of the suspended solids layer in the flow collection separation tank, which causes mixing and agitation of suspended solids and water, and also allows water to flow to some extent through the small holes in the throttle plate. The water in the upper part of the diaphragm plate can also be drained well, increasing the thickness of the suspended solids layer in this area and improving collection efficiency. Floating substances such as oil are coarsened and separated and floated upward by the buoyancy of the floating substances themselves, reducing the proportion of floating substances contained in the discharged water and improving recovery efficiency. Since the flow of water is suppressed by the aperture plate, the flow of water does not impede the separation and flotation of the coarse particles caused by buoyancy in the small holes, resulting in a good roughness. This has the effect of separating and floating the granulated suspended matter.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway schematic diagram of an embodiment in which the recovery and separation tank of the present invention is incorporated into a catamaran, Fig. 2 is an enlarged sectional view of the same recovery and separation tank, and Fig. 3 is the recovery and separation tank of the same. An enlarged top view with a part of the tank cut away, Figure 4 is a cross-sectional view taken along line I-I of the recovery and separation tank shown above, Figure 5 is a cross-sectional view of the recovery separation tank shown above, and Figure 6 is a cross-sectional view of the recovery separation tank shown above An explanatory top view showing the flow of floating objects and water, FIG. 7 is an explanatory cross-sectional view showing the flow of floating objects and water in the recovery separation tank, and FIG. 8 is a schematic illustration of the flow at the inlet of the recovery separation tank. In the figure, 2 is a recovery separation tank, 18 is a throttle plate,
18a is a small hole, A is floating matter, B is water, and X is a water channel.

Claims (1)

[Claims] 1 Located near the bottom surface of the layer of suspended matter floating on the water in the collection separation tank, which is located between the hulls of both sides of a catamaran, and allows floating matter to be recovered on the internal water surface to float and flow in a layered manner. At the very least, floating matter should be collected from this suspended matter layer by appropriate means, and a flat plate-shaped constriction plate with many small holes should be arranged approximately horizontally at the external discharge part of the water from the collection and separation tank. Characteristics of the collection device for fluid suspended matter.