JP2010264355A - Floating oil recovery device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a floating oil recovery device capable of recovering floating oil wherein the mixing amount of water is drastically reduced. <P>SOLUTION: The floating oil recovery device includes: a separation tank 12 having an inflow port for causing oil-water mixed liquid 22 to flow-in and an outflow port for causing separated water to flow-out respectively therethrough; a pump 14 for feeding the oil-water mixed liquid to a separation tank; a recovery vessel 16 for recovering the floating oil separated by the separation tank; a discharge pipe for guiding the floating oil on the upper part of the separation tank into the recovery container; a lead pipe 52 which is arranged in the separation tank such that one end part thereof is connected to the inflow port and the other end part thereof is opened for the upper part in the separation tank, and guides the oil-water mixed liquid to the upper part in the separation tank; and a guide pipe 54 which is loosely fitted so as to surround an opening end of the lead pipe, and connected to the lead pipe and guides air bubbles floating from the opening end of the lead pipe, to the upper side. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention is a floating oil recovery system that sucks and recovers oil such as working oil and lubricating oil that floats on the surface of an oil-water mixture in which water and oil are mixed, such as processing liquid (water-soluble coolant), cleaning liquid, and cooling liquid. Relates to the device.

  When oil and water are separated from an oil / water mixture, thermal and chemical treatments are used to secondarily pollute the environment. Moreover, the cost is high and the processing speed is slow. Since the separated and recovered water can be reused in the cleaning liquid and the like, it is not desired to mix impurities into the recovered water. For this reason, chemically treated water is not suitable for reuse.

  Conventionally, as a floating oil recovery device that does not use thermal treatment or chemical treatment, for example, the one shown in Patent Document 1 is known. However, a machine tool coolant tank will be described with reference to the schematic diagram shown in FIG. The oil / water mixture 22 stored in a storage tank (hereinafter referred to as a tank) 30 such as a cleaning liquid tank is sucked up by the pump 14 and fed into the separation tank 12 from the inlet 24. In this separation tank, water and oil are separated vertically using the difference in specific gravity.

  The oil (floating oil) 32 floating on the liquid surface of the separation tank 12 is concentrated at one place using the inclined plate 46 and floated on the liquid surface of a limited width. Only the floating oil 32 is collected in the collection container 16 through the discharge pipe 50. The recovered oil is appropriately disposed as waste liquid. The remaining liquid (water) from which the oil has been removed flows into the adjacent independent space 76 from the communication path 74 provided below the partition plate 72, and passes from the outlet 28 to the storage tank 30 via the intake pipe 48. Returned and reused. The arrow 78 in the separation tank 12 indicates the flow of the oil / water mixture, the arrow 80 indicates the flow of the oil, and the arrow 82 indicates the flow of the water.

  Conventionally, the tip (suction port) of the suction hose of the pump is supported by a float in the storage tank 30, and suction is performed while the suction port is always floated so as to follow the liquid level of the oil / water mixture in the storage tank. This is also known (see Patent Document 1).

JP 2004-305847 A

The prior art has the following problems to be solved.
With the momentum at the time of discharge from the pump 14 in the separation tank 12, as shown by an arrow 84 in FIG. Under the influence of the flow caused by this stirring, a situation occurs in which the oil / water separation effect is attenuated.

  In addition, a large amount of air may be sucked together at the stage of sucking the oil / water mixture from the storage tank 30 using the pump 14. In particular, when the tip (suction port) of the suction hose of the pump 14 is supported by a float in the storage tank 30, a large amount of air is likely to be sucked.

  In this case, air is discharged into the separation tank 12 from the pump 14 together with the oil / water mixture and becomes bubbles and rises to the liquid level. Bubbles are mixed with oil and discarded with oil. However, since the bubbles contain a large amount of water, they become waste liquid containing a large amount of water.

  The floating oil that has floated to the liquid level in the separation tank is collected in a narrow place above the liquid level by the inclined plate 46, but is mixed with water again due to the presence of bubbles, and a lot of water is mixed. In addition, since bubbles mixed with oil actively burst, the oil that floats up may scatter and contaminate the surroundings.

  FIG. 9 is a diagram showing the transition of the recovered amount of oil and water in the floating oil actually recovered by the conventional separation tank. In FIG. 9, a broken line symbol 88 indicates the total recovery amount, 90 indicates the water recovery amount, and 92 indicates each transition of the oil recovery amount.

  As shown in FIG. 9, the floating oil contains about 2.5 times as much water as the oil, and it was confirmed that the water that can be reused was recovered and wasted as waste oil. . Floating oil mixed with a large amount of water will increase the cost of disposal. It is desirable that the recovered floating oil can be disposed of with reduced moisture as much as possible.

  The present invention has been made in order to solve the above-described problem, and a floating oil recovery apparatus capable of recovering floating oil that greatly improves the oil-water separation effect in the separation tank and further greatly reduces the amount of mixed water. The purpose is to provide.

The following configurations are means for solving the above-described problems.
<Configuration 1>
Separation tank having an inlet for introducing the oil / water mixture in the storage tank and an outlet for discharging the separation water, a pump for sucking the oil / water mixture from the storage tank and feeding it to the separation tank, and separation by the separation tank A recovery container for recovering the floated oil, a discharge pipe for guiding the floated oil floating above the separation tank into the recovery container, one end connected to the inlet, and the other end to the separation tank A lead pipe disposed in the separation tank so as to open in the upper part thereof and guiding the oil / water mixture to the upper part in the separation tank; and the lead pipe loosely fitted so as to surround an open end of the lead pipe. A floating oil collecting apparatus, comprising: a guide pipe connected to a pipe and guiding upward the bubbles rising from the open end of the reed pipe.

<Configuration 2>
A separation tank having an inlet for flowing in the oil / water mixture in the storage tank and an outlet for discharging the separated water; a pump for sucking the oil / water mixture from the storage tank and feeding it to the separation tank; and the separation tank A recovery container for recovering the floating oil separated in step (b), and a first space for retaining the oil / water mixture flowing in from the inflow port on the inflow port side in the separation tank. Each of the first partition plate having a communication passage through which the oil / water mixture is overflowed or inserted, and between the first partition plate and the outlet side, from the communication passage of the first partition plate. The oil / water mixture that has overflowed or inserted is retained, and a second space that separates into oil and water due to a difference in specific gravity and a third space that retains the separated water are formed, and the separated water is formed in a lower portion. The A second partition plate having a communication path to be passed, and a part of the second space on the second partition plate side in an opened state, the first space and the second space. An inclined plate having a slope that closes the top and rises toward the second partition plate, and one end portion is connected to the outflow port and the other end portion is connected to the third outlet in the third space. Floating oil recovery comprising: a water intake pipe disposed so as to open to the top of the space; and a discharge pipe for guiding the floating oil floating above the second space into the recovery container. apparatus.

<Configuration 3>
In the floating oil recovery apparatus according to Configuration 2, one end is connected to the inflow port, and the other end is disposed in the first space so as to open to an upper portion in the first space. A lead pipe for guiding the oil / water mixture to the upper part in the separation tank, one end part is loosely fitted so as to surround the open end of the lead pipe, and the other end part is connected to the second pipe. It is arranged so as to face the floating oil surface that floats above the space, and guides the air flow generated by the air bubbles floating from the open end of the reed tube so that the air flow applies pressure to the floating oil surface. A floating oil recovery apparatus comprising a guide tube.

<Configuration 4>
In the floating oil recovery apparatus according to Configuration 1 or 3, the guide pipe has a diameter at a connection portion with the lead pipe that is larger than an outer diameter of the lead pipe, and a gap between the guide pipe and the lead pipe is a gap of the lead pipe. It has a cross-sectional area that is equal to or larger than the cross-sectional area of the caliber, and the connecting portion inverts the direction of the flow of the oil / water mixture flowing out from the open end of the reed pipe in a downward direction along the reed pipe, Floating oil recovery device characterized in that it is a partition wall that guides to

<Configuration 5>
5. The floating oil recovery apparatus according to any one of configurations 1 to 4, wherein a diaphragm pump is used as the pump, and the start and stop operations are performed by a switch of an air valve.

<Configuration 6>
The floating oil recovery apparatus according to any one of configurations 1 to 5, wherein the separation tank, the pump, and the recovery container are mounted on a gantry with casters to be movable. .

<Configuration 7>
5. The floating oil recovery apparatus according to claim 4, wherein the guide pipe is provided with a mechanism for applying air pressure to the opening in the upper part of the second space.

<Configuration 8>
In the floating oil recovery apparatus according to Configuration 1 or 4, a liquid reservoir for retaining a part of the oil / water mixture guided from the lead pipe is provided in the vicinity of a connection portion of the guide pipe with the lead pipe. A floating oil recovery apparatus characterized by being provided.

<Effect of Configuration 1>
Air contained in the oil / water mixture flowing in from the inflow port intensively flows from the lead pipe to the guide pipe, and hardly flows into the first space and the second space. For this reason, bubbles do not rise on the liquid surface in the first space and the second space, and the phenomenon that the separated oil and water are mixed again due to the presence of the bubbles does not occur. Therefore, the amount of water mixed in the recovered floating oil can be greatly reduced. The power for operation is only the pump, and the amount of energy for processing may be small. Since separation is performed mechanically and no chemicals are used, the separated water can be recovered and reused.
<Effect of Configuration 2>
By providing the first partition plate in the separation tank 12 to form the first space and the second space, the second space where the oil-water separation action is mainly performed is caused by the momentum at the time of discharging from the pump Since the influence of stirring is hardly exerted, the oil / water separation is efficiently performed, and the oil / water separation effect in the separation tank is greatly improved.
<Effect of Configuration 5>
By using the diaphragm pump, the entire apparatus can be made compact, and since no electric power is used, it can be used safely even in locations where explosion protection is necessary. There is little noise.
<Effect of Configuration 6>
You can move easily and freely even in a small place. Versatile and convenient to use.
<Effect of Configuration 7>
The fluidity of the floating oil is promoted and can be efficiently fed into the discharge pipe leading into the collection container.
<Effect of Configuration 8>
There is an effect of preventing the air contained in the oil / water mixture from flowing into the separation tank body.

It is a perspective view which shows the embodiment of the floating oil collection | recovery apparatus of Example 1 of this invention. It is the same front view. It is the same top view. It is a perspective view which shows the components of the Example. It is the same side view. It is a perspective view which shows the float used in the Example. It is the schematic of the conventional floating oil collection | recovery apparatus. (A) is the schematic of the floating oil collection | recovery apparatus which concerns on this invention, (b) is explanatory drawing of the A section of (a), (c) It is explanatory drawing of the B section of (a). It is a figure which shows the floating oil collection amount transition by the conventional floating oil collection | recovery apparatus. It is a figure which shows the floating oil collection amount transition by the floating oil collection | recovery apparatus which concerns on this invention. It is explanatory drawing which shows the liquid reservoir part which hold | maintained a part of oil-water mixed liquid provided in the inclination board which concerns on the floating oil collection | recovery apparatus of this invention.

Hereinafter, embodiments of the present invention will be described in detail for each example.

  FIG. 1 is a perspective view showing an embodiment of a floating oil recovery apparatus of Example 1, FIG. 2 is a front view thereof, and FIG. 3 is a plan view thereof. 4 is a perspective view showing components of the embodiment, FIG. 5 is a side view thereof, and FIG. 6 is a perspective view showing a float used in the embodiment. FIG. 8 is a schematic view of a floating oil recovery apparatus according to the present invention.

  As shown in these drawings, the floating oil recovery apparatus 10 includes a separation tank 12 that separates an oil / water mixture 22 in a storage tank 30 such as a machine tool coolant tank and a cleaning liquid tank into oil and water, and an oil / water mixture 22. A pump 14 that sucks up from the storage tank 30 and sends it to the separation tank 12 and a recovery container 16 that recovers the floating oil separated in the separation tank 12 are provided.

  A diaphragm pump is used as the pump 14 and is mounted on a pump mount 62 with casters 60. On top of that, a separation tank 12 and a recovery container 16 having a substantially rectangular parallelepiped shape are arranged side by side so that they can move together. The pump base 62 is provided with a regulator 68 and an air valve 70 as driving devices for the diaphragm pump 14. The operation of starting and stopping the diaphragm pump 14 is performed by a switch of the air valve 70.

  By using a diaphragm pump as the pump 14, the entire apparatus can be made compact, and since no electric power is used, it can be safely used even in locations where explosion protection is necessary. There is little noise.

  The tip 65 (FIG. 6) of the liquid suction hose 64 of the diaphragm pump 14 is sandwiched between two barrel-shaped floats 66 that float on the liquid surface 58 of the storage tank 30, and is always the uppermost in the storage tank 30. The liquid tank 58 is opened in the vicinity of the liquid level 58 so that the liquid can be sucked.

  As shown in FIG. 8A, the separation tank 12 has a first space 20, a second space 36, and a third space 38 by the first partition plate 18 and the second partition plate 40. Three independent spaces are formed. An inlet 24 through which the oil / water mixture 22 of the storage tank 30 flows is provided at the lower part of the first space 20, and an outlet 28 through which the separated water flows out is provided at the side of the third space 38. ing.

  The first space 20 is a space in which the oil / water mixture 22 flowing from the inlet 24 is reserved. The first partition plate 18 is provided with communication passages 34 and 18a for allowing the oil / water mixture to overflow or to be inserted in the upper portion and the middle portion, respectively.

  That is, the upper part of the first partition plate 18 is lowered, and the communication passage 34 is formed so that the oil / water mixture in the first space 20 overflows and can flow into the second space 36. In addition, a long hole 18a is provided in an intermediate portion of the first partition plate 18, and a communication passage through which the oil / water mixture in the first space 20 can flow through the long hole 18a and flow into the second space 36 is provided. ing.

  The second space 36 is a space for retaining the oil / water mixture 22 overflowed or inserted from the communication path of the first partition plate 18 and separating it into oil and water due to a difference in specific gravity. Since the oil floats on the liquid surface 59, only the oil (floating oil) 32 that floats on the liquid surface 59 of the separation tank 12 is collected in the collection container 16. The oil recovered in the recovery container 16 is appropriately disposed as waste liquid.

  In the second space 36, as shown in FIG. 8A, a net 94 through which oil can pass is stretched. In this net 94, for example, a punching metal is bent a plurality of times between the first partition plate 18 and the second partition plate 40 and arranged in the vertical direction.

  The third space 38 is a space for retaining the water 26 inserted through a long hole (communication path) 40 a provided in the lower part of the second partition plate 40.

  In order to concentrate the oil (floating oil) 32 floating on the liquid surface of the first space 20 and the second space 36 in one place, the upper portion of the first space 20 and the upper portion of a part of the second space 36 An inclined plate 46 is disposed across the surface. The inclined plate 46 has a flat rectangular box shape with an inclined bottom surface and an open top surface. The inclined plate 46 is removably fitted into the upper portion of the first space 20 and the upper portion of the second space 36. It is attached by.

  The bottom surface of the inclined plate 46 has the first space 20 and the second space 36 in a state in which the opening 37 is formed in a part of the upper portion of the second space 36 on the second partition plate 40 side. It is a slope which closes the upper part and goes up toward the second partition plate 40 side. A U-shaped handle 47 is provided on the upper surface of the inclined plate 46 for the convenience of attachment and removal.

  The floating oil 32 floating on the liquid surface of the first space 20 and the second space 36 is concentrated in the opening 37 at the upper part of the second space 36. As shown in FIG. 8B, the discharge pipe 50 is disposed in the opening portion 37. The discharge pipe 50 guides the floating oil 32 into the collection container 16.

  In the third space 38, an L-shaped intake pipe 48 having one end connected to the outlet 28 and the other end opened to the upper portion of the third space 38 is disposed. The water flowing into the third space 38 rises from the bottom and flows into the water intake pipe 48 from the upper opening end of the water intake pipe 48 as indicated by an arrow 82, and from the outlet 28 through the hose 29, the storage tank 30. Returned in. In the storage tank 30, the oil / water mixture is sent into the separation tank 12, and only the separated water returns to gradually deoil, and finally the reusable water is reserved.

  Further, as shown in FIG. 8A, a lead pipe 52 arranged upright in the first space 20 and a guide pipe 54 communicated with the lead pipe 52 and arranged above the separation tank 12. Are arranged.

  The reed pipe 52 has a role of floating so that air (bubbles) contained in the oil / water mixture 22 flowing in from the inflow port 24 does not enter the separation tank main body, that is, the first space 20. The guide tube 54 guides the bubbles 56 discharged from the lead tube 52 upward toward the liquid level 57 so that the bubbles 56 easily float on the liquid level 57 in the guide tube 54. In addition to raising the bubbles 56 by buoyancy, the bubbles 56 are forcibly pushed up to the liquid level 57. If the bubble 56 bursts, the air may be released into the atmosphere.

  Further, it is preferable that the lead pipe 52 be opened just under the liquid level 57 so as to be surely lifted by the liquid level 57 in the guide pipe 54. The bubbles that have once floated on the liquid surface 57 are unlikely to return to the liquid. However, it is because the bubbles may return to the liquid again when riding on the flow toward the bottom of the separation tank 12 near the liquid level 57. Therefore, it is preferable to push up the oil / water mixture 22 mixed with bubbles to a position as close as possible to the liquid level 57 to prevent the lateral flow of the oil / water mixture 22.

  The guide tube 54 serves as a partition wall that holds the air bubbles that float up so as to surround the upper edge opening of the reed tube 52 and the liquid surface thereabove. The guide tube 54 is desirably formed to a sufficiently high position from the liquid level 57 so that the bubbles rising on the liquid level 57 in the guide tube 54 do not escape and can be held until the bubbles 56 burst. .

  Further, the lead pipe 52 and the guide pipe 54 direct the flow of the liquid from which bubbles are removed in a direction from the liquid surface 57 toward the first space 20. The liquid is guided downward from a narrow gap between the lead pipe 52 and the guide pipe 54 so that the liquid going into the first space 20 does not draw bubbles. The total area of the gaps is sufficiently wide so that the liquid level in the partition walls does not rise. From such a viewpoint, the lead pipe 52 and the guide pipe 54 are provided.

  In this embodiment, the reed tube 52 has one end connected to the inflow port 24 and the other end opened to the top in the first space 20. The guide tube 54 is disposed so that one end thereof is loosely fitted so as to surround the upper edge opening of the lead tube 52 and guides the bubbles rising from the upper edge opening of the lead tube upward.

  If the bubbles stay inside the guide tube 54 without rising, the bubbles containing a large amount of moisture may be discharged to the outside as they are. In this case, the other end of the guide tube 54 may protrude like a chimney above the separation tank 12 and open to the atmosphere.

  However, as shown in FIG. 8A, in order to efficiently collect the floating oil 32 that has floated on the opening 37 in the upper portion of the second space 36 using the pressure of air generated by the burst of bubbles. It may be configured.

  That is, the overall shape of the guide tube 54 is U-shaped, and its one end 54 a is loosely fitted so as to surround the open end of the reed tube 52 and connected to the reed tube 52. Further, as shown in FIGS. 8A and 8B, the other end portion 54 b is disposed so as to face the oil surface 59 of the floating oil 32 that floats in the opening portion 37 in the upper portion of the second space 36. The

  The guide tube 54 guides an airflow generated by the burst of bubbles that have risen from the open end of the reed tube 52, and the airflow rises on the oil surface of the floating oil 32 that floats to the opening portion 37 in the upper portion of the second space 36. Pressure is applied. In order for the air flow to apply pressure more effectively to the oil surface of the floating oil 32, the other end portion 54b of the guide tube 54 may have a tapered shape or a structure with a nozzle attached.

  The connecting portion between the lead tube 52 and the guide tube 54 is such that the guide tube 54 has a larger diameter than the lead tube 52, and an appropriate gap is formed between them. That is, as shown in FIG. 8C, the guide tube 54 has a diameter at the connecting portion 54a with the lead tube 52 larger than the outer diameter of the lead tube 52, and a gap between the guide tube 54 and the lead tube 52 is the lead tube 52. It has a cross-sectional area greater than the cross-sectional area of the aperture.

  The oil-water mixture 22 that has flowed in from the inflow port 24 as shown by the arrow 78 flows in a state where the gap between the end portion of the lead pipe 52 and the guide pipe 54 is reversed as shown by the arrow 96 and flows first. It flows into the space 20. At this time, the air contained in the oil / water mixture 22 rises from the opening end of the reed tube 52 as bubbles 56 and exceeds the liquid level 57, ruptures and becomes an air current in the guide tube 54 in the second space. It flows toward the opening part 37 of 36 upper part.

  The connecting portion 54 a of the guide tube 54 with the lead tube 52 is inverted by moving the direction of the oil / water mixture flowing out from the open end of the lead tube 52 downward along the lead tube 52 as indicated by an arrow 96. It is a partition that guides into one space 20.

  Air in the oil / water mixture 22 flows intensively through the guide tube 54 to the opening 37 at the top of the second space 36, and hardly flows into the first space 20 and the second space 36. For this reason, bubbles do not rise from the inside of the first space 20 and the second space 36, and the phenomenon that the separated oil and water are mixed again due to the presence of the bubbles does not occur. Therefore, the amount of water contained in the recovered floating oil 32 can be greatly reduced.

  FIG. 10 is a diagram illustrating a transition in the amount of oil and water recovered in the floating oil actually recovered by the separation tank of Example 2. As shown in FIG. 10, it was confirmed that the oil in the floating oil contained almost no moisture. In FIG. 10, reference numeral 90 indicates the amount of recovered water, and 92 indicates the amount of recovered oil. Since there was almost no recovered amount of water, the recovered amount of oil and the total recovered amount are substantially the same.

  That is, the amount of moisture contained in the floating oil 32 can be greatly reduced by allowing the air discharged from the pump 14 to escape through the lead pipe 52 and the guide pipe 54 in the separation tank 12. it can. Further, the air that has flowed in the guide tube 54 toward the opening portion 37 above the second space 36 becomes a pressing force that pushes the floating oil accumulated in the opening portion 37 inward of the discharge tube 50.

  Moreover, according to the said Example, the 1st partition plate 18 was provided in the separation tank 12, and the 1st space 20 and the 2nd space 36 were formed, Therefore The oil-water separation effect | action is mainly performed. Since the space 36 is hardly affected by the agitation caused by the momentum discharged from the pump 14, oil-water separation is efficiently performed. In addition, since the net 94 is stretched in the second space 36, an effect of further attenuating the influence of agitation due to the momentum at the time of discharge is obtained.

In the present invention, the following configuration may be added as necessary.
That is, although not shown, a mechanism for applying air pressure toward the opening 37 at the upper part of the second space 36 is provided at an arbitrary position of the guide tube 54. In this way, the fluidity of the floating oil 32 can be promoted and the floating oil 32 can be efficiently fed into the discharge pipe 50.

  Further, in the vicinity of the connecting portion of the guide tube 54 with the lead tube 52, a liquid reservoir portion for retaining a part of the oil / water mixed liquid 22 guided from the lead tube 52 is provided. For example, as shown in FIG. 11, this liquid reservoir portion utilizes the fact that the inclined plate 46 has a box shape, and shields the opened upper surface with a plate body 97 to form a sealed space 98, The guide tube 54 is configured by providing a through hole 99 that opens into the sealed space 98 so that the sealed space 98 and the guide tube 54 communicate freely. By doing so, the sealed space 98 formed by the box-shaped inclined plate becomes a liquid pool portion, and an effect of preventing the air contained in the oil / water mixture 22 from flowing into the first space 20 at all can be obtained.

DESCRIPTION OF SYMBOLS 10 Floating oil collection | recovery apparatus 12 Separation tank 14 Pump 16 Collection | recovery container 18 1st partition plate 18a Long hole 20 1st space 22 Oil-water liquid mixture 24 Inlet 26 Separation water 28 Outlet 29 Hose 30 Tank 32 Floating oil 34 Communication path 36 second space 37 opening portion 38 third space 40 second partition plate 40a long hole 42 communication passage 44 upper opening 46 inclined plate 47 handle 48 water intake pipe 50 discharge pipe 52 lead pipe 54 guide pipe 54a one end 54b Other end 56 Air bubble 57 Liquid level of guide pipe 58 Liquid level of storage tank 59 Liquid level of separation tank 60 Casters 62 Base 64 Hose 65 Hose tip 66 Float 68 Regulator 70 Air valve 72 Partition plate 74 Communication path 76 Separation space 78 Oil water Mixture flow 80 Oil flow 82 Water flow 84 Arrow 86 Air flow 88 Total recovery 90 Water recovery 92 Oil Recovered amount 94 Net 96 Arrow 97 Plate body 98 Sealed space 99 Through hole

Claims (8)

A separation tank having an inlet through which the oil / water mixture in the storage tank flows in and an outlet through which the separated water flows out;
A pump for sucking up the oil / water mixture from a storage tank and feeding it into the separation tank;
A collection container for collecting the floating oil separated in the separation tank;
A discharge pipe for guiding the floating oil floating above the separation tank into the collection container;
A lead pipe connected to the inflow port and having the other end opened in the upper part of the separation tank and leading the oil / water mixture to the upper part of the separation tank; ,
A floating oil comprising: a guide pipe that is loosely fitted so as to surround the open end of the lead pipe and is connected to the lead pipe and guides air bubbles rising from the open end of the lead pipe upward. Recovery device. A separation tank having an inlet for flowing in the oil / water mixture in the storage tank and an outlet for discharging the separated water;
A pump for sucking up the oil / water mixture from a storage tank and feeding it into the separation tank;
A collection container for collecting the floating oil separated in the separation tank;
A first space for retaining the oil / water mixture flowing in from the inlet is formed on the inlet side in the separation tank, and the oil / water mixture is overflowed or inserted into an upper part and an intermediate part, respectively. A first partition plate having a passage;
The oil / water mixture overflowed or inserted through the communication path of the first partition plate is retained between the first partition plate and the outlet side, and separated into oil and water due to a difference in specific gravity. A second partition plate having a communication path through which the separated water is inserted, and a third space for retaining the separated water.
Closing the first space and the upper part of the second space in a state where a part of the upper part of the second space on the second partition plate side is opened, and the second partition plate side An inclined plate having a slope rising toward
In the third space, a water intake pipe disposed so that one end is connected to the outlet and the other end is opened to the top of the third space;
A floating oil recovery apparatus, comprising: a discharge pipe that guides the floating oil floating above the second space into the recovery container. In the floating oil recovery apparatus according to claim 2,
One end is connected to the inflow port, and the other end is disposed in the first space so as to open to the upper part in the first space, and the oil / water mixture is placed in the upper part in the separation tank. A lead tube that leads,
One end is loosely fitted so as to surround the open end of the reed tube and connected to the reed tube, and the other end is disposed so as to face the floating oil surface that floats above the second space. And a guide tube that guides an air flow generated by bubbles that have floated from the open end of the reed tube and applies pressure to the floating oil surface. In the floating oil recovery apparatus according to claim 1 or 3,
The guide tube has a cross-sectional area larger than an outer diameter of the lead tube, and a gap between the guide tube and the lead tube is larger than a cross-sectional area of the lead tube. The connecting portion is a partition wall that reverses the flow direction of the oil / water mixture flowing out from the open end of the lead pipe to the downward direction along the lead pipe and guides it into the separation tank. Floating oil recovery device. In the floating oil recovery device according to any one of claims 1 to 4,
A floating oil collecting apparatus characterized in that a diaphragm pump is used as the pump, and the activation and deactivation are performed by a switch of an air valve. In the floating oil recovery apparatus according to any one of claims 1 to 5,
The floating oil recovery apparatus, wherein the separation tank, the pump, and the recovery container are mounted on a gantry with casters to be movable. In the floating oil recovery apparatus according to claim 4,
A floating oil recovery apparatus, wherein the guide pipe is provided with a mechanism for applying air pressure to an opening at an upper portion of the second space. In the floating oil recovery device according to claim 1 or 4,
A floating oil recovery apparatus, wherein a liquid reservoir for retaining a part of the oil-water mixed liquid guided from the lead pipe is provided in the vicinity of a connection portion of the guide pipe with the lead pipe.

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