JPH0834749B2 - Liquid recovery device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid recovery device for spilled oil.

[0002]

2. Description of the Related Art Marine pollution accidents in which crude oil, fuel oil, etc. leak out frequently due to grounding accidents and sinking accidents of ships, especially tankers, and it is strongly recommended to collect these spilled oils as much as possible to protect the environment. Is desired.

In response to the above-mentioned demand, a device for collecting spilled oil is
Various developments have been made, and for example, Japanese Patent Publication No. 59-20807 and Japanese Patent Publication No. 53-26422 by the applicant of the present application are known. In addition, Japanese Patent Application No. 3-12 filed by the applicant of the present application
There is number 3712. In the publicly known example of, the spiral guide plate is held horizontally on the water surface so as to restrain the rotation, and an impeller is concentrically arranged below the spiral guide plate so as to be freely rotatable, and a central portion of the spiral guide plate is provided. An oil suction pipe is provided, and the part of the spiral guide plate that is submerged in water becomes deeper from the water surface toward the center of the spiral, while the impeller rotates in the winding direction of the spiral guide plate to create a water level gradient. The spilled oil is caused to be generated, the spilled oil is entrained in the spiral guide plate, the oil is densified along the spiral guide plate and accumulated at the center of the spiral, and this is collected by the oil suction pipe.

Further, in a known example by the applicant of the present invention,
The vacuum pump collects oil from the oil sump chamber installed above the liquid level above the separation section of the main body tank, and the water overflows into the overflow pipe in the inner cylinder and is drained by the drain pump. is there.

Further, according to the applicant of the present application, the liquid containing oil or the like having a low specific gravity, which has entered from the inlet of the inflow guide portion, enters the inlet of the main body tank and flows through the baffle plate of the separating portion. Isolate and separate the oil etc. due to the difference in specific gravity and store the oil etc. in the separation tank.When the specified amount is reached, the oil etc. is recovered from the draw-out pipe, and the water enters the inner cylinder from the separation part and overflows into the overflow pipe. Then, the edge is cut off and only the water is drained to the outside in the overflow pipe.

[0006]

However, in all of these conventional examples, only the oil is efficiently recovered, and there is a risk that the water surface may be surrounded by an oil fence or the like and the oil film may diffuse. Although it is convenient when the amount is small, the structure is complicated, the processing capacity is limited, the size is large, and it is inconvenient to carry, so the response tends to be delayed in an emergency, and the oil film that tries to spread over the water area Is not sufficient to quickly recover and prevent the diffusion of oil slicks.

Further, in these conventional examples, oil or scum having a high viscosity and agglomerated cannot be recovered by being caught in the inlet, or these are clogged in the inlet to recover a liquid containing oil or the like. There are things you can't do.

Therefore, the present invention has been made in view of the above-mentioned circumstances, and simplifies the one by the present applicant to improve the recovery capability and downsize it to make it easy to handle, and to facilitate the response in case of emergency, and also to provide the block shape. It is an object of the present invention to provide a liquid recovery device that can easily recover oil and scum that have become depleted, and that does not reduce the recovery capacity.

[0009]

In order to solve the above-mentioned problems, the liquid recovery apparatus of the present invention forms a main body inflow weir that floats on the liquid in the main float and is a weir on the entire circumference, and at the same time, the main float A main body tank that allows the mounting position to be freely changed and the draft position to be changed, and a guide inflow weir that is loosely fitted to the outer circumference of the main body tank and floats on the liquid by a guide float to form a weir on the entire circumference. In addition, the inflow guide part that allows the mounting position of the guide float to freely change the draft position and introduces the liquid into the main body tank, and the discharge part that is provided in the lower part of the main body tank and discharges the liquid in the main body tank And consists of.

Further, an elevating device for the guide inflow weir is provided in the main body tank to elevate and lower the guide inflow weir when necessary. Further, it is preferable to connect the suction side of the pump to the discharge part.

Further, an injector may be connected to the discharge part and the delivery side of the pump may be connected to the injector.

[0012]

According to the liquid recovery apparatus having the above-described structure, the height of the guide inflow weir is set by adjusting the mounting position of the guide float of the inflow guide section, and further the mounting position of the main float of the main body tank is adjusted. Set the height of the main body inflow weir. Guide inflow gate keeps a constant height at all times following the change of the liquid level and liquid density regardless body vessel, the guide and main body inflow
Since the weir is the entire circumference of the weir, oil of light specific gravity is of course
Even if lumpy oil or scum flows into the guide inflow weir, it goes over the main inflow weir of the main body tank and enters the main body tank ,
Liquid containing oil etc. is collected from the discharge part at the bottom of the main body tank.

When the guide inflow weir is lowered by an elevating device as needed to increase the difference between the liquid level and the weir height, lumpy oil, scum, etc. smoothly flow into the guide inflow weir,
Further, it flows over the main body inflow weir and flows into the main body tank.

If the suction side of the pump is connected to the discharge part, the pump immediately discharges the liquid stored in the main body tank. When the delivery side of the pump is connected to the injector, the liquid in the main body tank is sucked by the injector.

[0015]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a plan view of a liquid recovery device of the present invention, FIG.
FIG. 3 is a side view of a part of the liquid recovery device in section, and FIG. 3 is a flow sheet diagram of a utilization system incorporating the liquid recovery device. In the figure, reference numeral 1 denotes a liquid recovery device, and the liquid recovery device 1 is a main body tank 3 that floats in liquid on a main float 2.
The main components are an inflow guide portion 5 that is loosely fitted in the main body tank 3 and floats in the liquid on the guide float 4, and a drain pipe (discharge portion) 6 provided in the main body tank 3.

The main body tank 3 has a conical tank 8 in a cylindrical body 7.
Has a double structure, and the upper end side wall has a main body inflow weir 9 around the entire circumference thereof, and the liquid flows into the main body tank 3 from the main body inflow weir 9. The body inflow gate 9, it is may be in, but <br/> part is fundamental in the entire circumference of the body vessel, or the whole circumference of the V-shape, even each other by notches in a U-shape There is no particular limitation as long as it is a structure in which the liquid containing oil in the water body flows in over . Cylindrical body 7
Three brackets 10 are provided on the lower end surface of the main float 2, and the main float 2 is attached to the tips of the brackets 10 so that the main float 2 can be freely changed. Growling . Therefore, the main body tank 3 floats on the liquid by the main float 2. The number of the main floats 2 increases to 4, 5, ... Depending on the size of the liquid recovery device 1.

The inflow guide portion 5 has a cylindrical body 11 having a diameter slightly larger than the outer peripheral surface of the main body tank 3, and the upper end side wall of the cylindrical body 11 has a guide inflow weir 12 all around the periphery thereof. The liquid is designed to flow in from the inflow weir 12. On the side wall of the cylindrical body 11, three brackets 13 are provided between the three brackets 10 of the main float 2 described above. The guide float 4 is attached to the ends of the brackets 13 so that the attachment position can be freely changed, so that the draft position of the cylindrical body 11 can be freely changed. Therefore, this inflow guide portion 5
Is loosely fitted on the outer periphery of the main body tank 3 and floats on the liquid by the guide float 4, so that it floats on the liquid independently of the main body tank 3. The inflow guide portion 5 can adjust the amount of liquid flowing inward beyond the guide inflow weir 12 by changing the mounting position of the guide float 4 with respect to the bracket 13.

The drain pipe 6 is a conical tank 8 of the main tank 3.
This drain pipe 6 is usually connected to the pressure side of the pump directly or indirectly via a suction pipe in order to discharge the liquid to the outside.

[0019] The thus described the installation of the liquid recovering apparatus 1 of the present invention configured and its operating how. First, the liquid recovery apparatus 1 and its ancillary equipment are transported to the land area 21 near the water area 20 where oil or the like is flowing out. This auxiliary equipment is composed of a recovery pump (pump) 22, a separate tank 23, a recovered oil storage tank 24, a suction pipe 25, a delivery pipe 26, etc. First, the separate tank 23 is installed in the land area 21, and then the recovery pump 22 Also, a recovered oil storage tank 24 is installed, and a power source is connected to the recovery pump 22 and the like. Next, the inflow guide portion 5 is loosely fitted into the main body tank 3 and other necessary settings are made, the suction pipe 25 is connected between the drain pipe 6 and the suction port of the recovery pump 22, and the recovery pump 22 is delivered. A delivery pipe 26 is provided between the inlet and the inflow pipe 27 of the separate tank 23, a connecting pipe 29 is provided between the recovery pipe 28 of the separate tank 23 and the recovered oil storage tank 24, and an overflow pipe of the separate tank 23.
Connect hoses 31 between 30 and the body of water 20, respectively. Water area
The liquid recovery device 1 is floated on approximately the center of the oil floating in 20. Then, by adjusting the mounting position of the main float 2 and the mounting position of the guide float 4, the main body inflow weir 9 of the main body tank 3 and the guide inflow weir of the inflow guide portion 5 in the water area 20.
If the installation height of 12 is adjusted, the installation and preparation for operation of the liquid recovery device 1 and its ancillary equipment are completed, so turn on the power. Water containing oil and scum flows into the conical tank 8 in the main body tank 3 through the guide inflow weir 12 and the main body inflow weir 9 which are all around the weir, and the drain pipe 6 Via the suction port of the recovery pump 22 into the casing, and is pressurized by the impeller and then enters the separate tank 23 from the delivery through the delivery pipe 26 and the inflow pipe 27. This separate tank 23
Is for separating liquids having different specific gravities, and in this embodiment, oil and water are separated. This separate tank 23
An overflow pipe 30 is provided in the pipe, and the height of the overflow pipe 30 can be adjusted as indicated by a chain double-dashed line in accordance with the height of the oil level accumulated in an oil sump 32, which will be described later. The water flowing out from the overflow pipe 30 flows into the water area 20 through the hose 31. Then, the recovery pump 22 is freely operated by setting a timer. That is, if the amount of collection is large, set the timer to 0,
Continuous operation, and intermittent operation if less. On this occasion,
Although it will collect water as well as oil, it is a separate tank.
The oil and water are separated by 23, and the water is returned to the original water area 20,
Oil is appropriately drained from the oil sump 32 of the separate tank 23 and put into the recovered oil storage tank 24 via the recovery pipe 28 and the connection pipe 29. Therefore, according to the present invention, it is not necessary to separate the oil on the water body 20 to recover the oil. Therefore, the size of the liquid recovery device in the water body 20 can be suppressed, and the spread of the oil film on the water surface can be suppressed even with the water. The oil can be recovered quickly and the spread of the oil film can be prevented.

4 and 5 show another embodiment of the present invention. The difference between this liquid recovery apparatus 1a and the embodiment shown in FIGS. 1 to 3 is that the main float 2 of the main body tank 3 flows in. Located on the outer side of the guide float 4 of the guide part 5, the upper parts of the main floats 2 are connected by a bar 40 assembled in a triangle, and a hanging tool 41 is attached to the corner of the bar 40, and further on the bar 40. Attach the mounting plate 50 and the mounting plate 50
The point is that an elevating device 51 for elevating the guide inflow weir 12 is attached above. In this lifting device 51, a disc 53 is eccentrically attached to a rotating shaft of a motor 52 provided on a mounting plate 50, and the upper part of the guide float 4 is connected by a bar 54 assembled in a triangle to rotate the disc 53. And hits this bar 54. By rotating the motor 52, the above-mentioned bar 54 is eccentrically attached by the disc 53 attached to the rotating shaft.
Sink the guide float 4 from the liquid surface,
12 Increase the difference between the height of the weir and the liquid surface, that is,
As shown in Fig. 6, the weir height of the guide inflow weir 12 is changed from the two-dot chain line to the position of the solid line, and lumpy oil, scum, etc.
It is made to flow into the inside and further into the main body tank 3. The circular plate 53 has a long hole 53a in the diametrical direction, and the eccentric state of the rotary shaft of the motor 52 can be adjusted by the screw 55, so that the vertical height of the guide inflow weir 12 can be adjusted. ing. Further, if the elevating device 51 is always operated, the recovered liquid amount becomes too large. Therefore, the interval operation may be performed, and the automatic operation may be performed by a timer or the like, or the manual operation may be performed while watching the situation.

Since the other structure and operation are substantially the same as those of the embodiment shown in FIGS. 1 to 3, the same reference numerals are given to the drawings and the description thereof will be omitted. FIGS. 6 and 7 show another embodiment of the present invention. The difference between this liquid recovery device 1b and the embodiment shown in FIGS. 4 and 5 is that a submersible pump (pump) 42 is provided in the drain pipe 6. There is a point. In this case, the recovery pump 22 in FIG. 3 is unnecessary. Other configurations and operations are substantially the same as those of the embodiment shown in FIGS. 1 to 3 and FIGS. 4 and 5, so the same reference numerals are given to the drawings and the description thereof will be omitted.

FIGS. 8 and 9 show another embodiment of the present invention. The difference between this liquid recovery apparatus 1c and the embodiment shown in FIGS. 1 to 3 is that the drain pipe 6 has a submersible pump. This submersible pump has 43 main floats and 4 main floats.
The main float 2a in a position where a large load of 43 is applied,
2a is enlarged, the other main floats 2b, 2b are reduced, and a frame 44 for supporting the submersible pump 43 is provided on the bracket 10, and the main body tank 3 is supported by the bracket 10 via the submersible pump 43 and the frame 44. In point. In this case, the recovery pump 22 in FIG. 3 is unnecessary. Other configurations and operations are substantially the same as those of the embodiment shown in FIGS. 1 to 3 and FIGS. 4 and 5, so the same reference numerals are given to the drawings and the description thereof will be omitted.

FIGS. 10 and 11 show another embodiment of the present invention. The difference between this liquid recovery apparatus 1d and the embodiment shown in FIGS. 1 to 3 is that the main body tank 3a is a square tank, and The point is that the number of main floats 2c is four and square, and the number of guide floats 4a is two and square. Other configurations and operations are substantially the same as those of the embodiment shown in FIGS. 1 to 3, and therefore, the same reference numerals are given to the drawings and the description thereof is omitted.

FIG. 12 shows another embodiment of the present invention. The difference between this liquid recovery apparatus 1e and the embodiment shown in FIGS. 1 to 3 is that the drain pipe 6 is provided with an injector 45. is there. In this case, the discharge side of the injector 45 and the inflow pipe 27 of the separate tank 23 are directly connected, the delivery side of the recovery pump 22 is connected to the suction side of the injector 45, and
The suction side of the recovery pump 22 is located below the oil film of the water area 20. This has the advantage that no trouble occurs even if the main body tank 3 runs out of water. Other configurations and operations are shown in FIG.
Since they are substantially the same as those of the first to third embodiments, the same reference numerals are given to the drawings and the description thereof will be omitted.

In the present embodiment, the case of recovering oil has been described, but the present invention is not limited to this, and is almost applicable as long as liquids having a difference in specific gravity do not dissolve in each other.

[0026]

As described in detail above, according to the liquid recovery apparatus of the present invention , the height of the guide inflow weir is set by adjusting the mounting position of the guide float of the inflow guide section, and further, Adjust the mounting position of the main float to set the height of the main weir. Guide inflow gate keeps a constant height at all times following the change of the liquid level and liquid density regardless body vessel, which
Since the guide and the main body inflow weir are all around the weir,
Oil of light specific gravity is, of course, lumpy oil or scum
Also flows into the guide inflow weir, further passes through the main body inflow weir of the main body tub and enters the main body tub, and the liquid containing oil or the like can be recovered from the discharge part at the lower part of the main body tub . Therefore, an oil such as the
Take many recovery capacity without being constrained to the separation ability of the other liquid, flows from the diffusion of the oil film can be prevented, Ri Do facilitated response time of emergency, the guide and the liquid from the entire periphery of the main body inflow gate
It is easy to collect lumpy oil and scum, and further
Stable recovery of liquid on the surface without a separation mechanism etc.
It is compact and lightweight and easy to carry because it has only the essential configuration
The workability is enhanced.

When the guide inflow weir is lowered by an elevating device as necessary to increase the difference between the liquid surface and the weir height, lumpy oil, scum, etc., flow into the guide inflow weir, and the main body inflow weir Overflows into the main body tank. Therefore, there is no possibility that lumpy oil, scum, or the like is accumulated around the liquid recovery device, or that the liquid containing oil or the like cannot be recovered.

Further, if the suction side of the pump is connected to the discharge part, the pump immediately discharges the liquid stored in the main body tank. Therefore, in addition to the effects described above, the pump installed on land can be omitted, and the response in an emergency becomes easier.

When the delivery side of the pump is connected to the injector, the liquid in the main body tank is sucked by the injector. Therefore, in addition to the above effects, there is no problem even if the liquid in the main body tank is exhausted.

[Brief description of drawings]

FIG. 1 is a plan view of a liquid recovery device of the present invention.

FIG. 2 is a side view in which a part of the liquid recovery device is shown in section.

FIG. 3 is a flow sheet diagram of a usage system incorporating a liquid recovery device.

FIG. 4 is a partially sectional side view showing another embodiment of the present invention.

FIG. 5 is a partially sectional side view showing another embodiment of the present invention.

FIG. 6 is a plan view showing another embodiment of the present invention.

FIG. 7 is a side view, partly in section, showing another embodiment of the present invention.

FIG. 8 is a plan view showing another embodiment of the present invention.

FIG. 9 is a partial cross-sectional side view showing another embodiment of the present invention.

FIG. 10 is a plan view showing another embodiment of the present invention.

FIG. 11 is a partial cross-sectional side view showing another embodiment of the present invention.

FIG. 12 is a partial cross-sectional side view showing another embodiment of the present invention.

[Explanation of symbols]

1, 1a, 1b, 1c, 1d, 1e Liquid recovery device 2, 2a, 2b Main float 3, 3a, 3b Main body tank 4, 4a Guide float 5 Inflow guide part 6 Discharge pipe (drainage part) 9 Main body inflow weir 12 guide Inflow weir 22 Recovery pump (pump) 42, 43 Submersible pump (pump) 45 Injector 51 Lifting device

Claims (4)

[Claims] 1. The main float floats on the liquid and the entire circumference
A body vessel that allows changing the draft position by freely mounting position of the main float to form the body inflow gate that is a weir, the total float in the liquid in loosely fitted to the guide float on the outer periphery of the main body bath The guide inflow weir, which is a weir around the
An inflow guide part which is formed and allows the mounting position of the guide float to be freely changed to change the draft position, and which introduces a liquid into the main body tank, and a discharge provided in the lower part of the main body tank to discharge the liquid in the main body tank. And a liquid recovery device. 2. The liquid recovery apparatus according to claim 1, wherein a guide inflow weir raising / lowering device is provided in the main body tank, and the guide inflow weir is elevated / lowered when necessary. 3. The liquid recovery apparatus according to claim 1, wherein a suction side of a pump is connected to the discharge part. 4. The liquid recovery apparatus according to claim 1, wherein an injector is connected to the discharge part, and a delivery side of a pump is connected to the injector.