Classifications

• • E—FIXED CONSTRUCTIONS
  • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
  • E02B—HYDRAULIC ENGINEERING
  • E02B15/00—Cleaning or keeping clear the surface of open water; Apparatus therefor
  • E02B15/04—Devices for cleaning or keeping clear the surface of open water from oil or like floating materials by separating or removing these materials
  • E02B15/048—Oil collectors moved over the water skimming the water surface
• • C—CHEMISTRY; METALLURGY
  • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F1/00—Treatment of water, waste water, or sewage
  • C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
  • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
  • Y02A20/20—Controlling water pollution; Waste water treatment
  • Y02A20/204—Keeping clear the surface of open water from oil spills

Definitions

• a drum with a plurality of brushes attached thereon is installed at an upstream of the spiral rotor. Further, a scrubbing roller removes the oils adhered to the brushes.
• the drum cannot be made to revolve fast due to the viscosity of the oils. As a result, the oils cannot be removed in a speedy manner. Further, there is no means for handling the water adhered to the oil, thus increasing the recovered amount (mixture of water and oil) , making it necessary to have a large storage tank. As a result, the amount of actual recovered in the storage tank is relatively small .
• this oil recovering ship is only capable of simply carrying out the recovering task, and therefore, a towboat is required to pull the ship to the site of an oil spill. Therefore, in an emergency, the oil recovering ship cannot be mobilized in a speedy manner.
• FIG. 2 is a plan view of the skimmer according to the present invention.
• FIG. 5 is a sectional view taken along a line C-C of FIG.
• the main floater 300 installed at the central tank 110, the oil separating/extracting means 400, and the oil collecting tank 600 provide the floating force to the hull.
• the main floater 300 has the guide path 310, and has a width same as the central tank 110.
• the main floater 300 should have a height to provide a sufficient space above the collected oil of the central tank 110.
• the oil collecting tank 600 comprises: an arcuate portion 611 installed under the drum 410 creating a small gap at the tips of the turning blades 420 of the oil separating/extracting means 400; an inclined guide face 612 integrally formed with the arcuate portion 611, for guiding the collected oil into a first oil collecting tank 610; an isolating wall 613 integrally formed with the bottom of the guiding face 612, for dividing the oil collecting tank 600 into two, with the collected oil being positioned above and water sunk below; and the first oil collecting tank 610 having a sea water discharge face 615 extended beneath the guiding face, for guiding the sea water into the central tank 110.
• the heights of the second oil collecting tank 620 and the third oil collecting tank 630 are made successively lower, to naturally overflow the sea water.
• the height T2 of the second oil collecting tank 620 should be the same height or slightly higher than the level S3 of the central tank 110.
• a draining path 621 should be formed on the bottom of the second oil collecting tank 620, for draining the separated sea water.
• the draining path 621 should be as high as the level of the central tank 110 or slightly higher. However, it should be lower than the height T2 of the second oil collecting tank 620 to prevent the reverse flow of the water.
• FIG. 4 is a sectional view taken along a line B-B of FIG. 2.
• the oil skimmer comprises: a lower hull 100 having the central tank 110 in the middle, and the second float adjusting tanks 121 formed at both sides of the central tank 110; an oil drawing means 200 disposed on the front portion of the central tank 110; and a main floater 300 having the guide path 310 extending above the central tank 110.
• the main floater 300 may be filled with a foamed resin but is not limited to this material, while its outside may be covered with wood or plastic sheets on a frame (not shown) .
• FIG. 6 is a side view showing the structure of the oil drawing means 200 and the oil separating / extracting means 400 of the present invention.
• the oil drawing means 200 according to the present invention comprises: a drum 210 having radially arranged blade channels 212 for being rotated eccentrically by an eccentric shaft 211; a pair of drum eccentric shaft retaining plates 230 each having a revolving track having a diameter larger than that of the drum 210, for retaining the eccentric shaft 211, and having a concentric groove 231 concentric to the eccentric shaft 211; and blades 220 each settled in the blade channel 212 and each having a pair of guide protuberances 221 for being guided along the concentric grooves 231.
• FIG. 7 is a longitudinal sectional view of FIG. 6.
• the blades 220 move along the concentric groove 231, while the drum 210 eccentrically revolves without being loaded with an extra load.
• the driving power for the drum 210 can be reduced because of no extra load.
• the sea water which is discharged through the bottom opening 120 is kept smaller than the incoming oil -water mixture, so that a level S3 can be kept higher than the existing level S2. If the level S3 of the tank 110 is higher than the existing level S2 , the relative water pressure increases, and, therefore, the sea water can be continuously discharged through opening 120. As a result, the oil layer within the tank 110 becomes thicker.
• the size of the opening 120 is determined by taking into account the revolution speed of the oil drawing means 200 and the size of the blades 220.
• the water is separated from the oil by utilizing the difference of the specific gravities, and the oil layer is made to thicken. Therefore, the oil recovery becomes a speedy process. Further, several oil collecting tanks are installed to purify the recovered oil, therefore improving the oil purity. Further, owing to the main floater, the oil recovering operation can be carried out under all weather conditions .

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Environmental & Geological Engineering (AREA)
• Water Supply & Treatment (AREA)
• Hydrology & Water Resources (AREA)
• Life Sciences & Earth Sciences (AREA)
• Organic Chemistry (AREA)
• Analytical Chemistry (AREA)
• Mechanical Engineering (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Cleaning Or Clearing Of The Surface Of Open Water (AREA)
• Removal Of Floating Material (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=19509731

Family Applications (1)

Country Status (6)

Families Citing this family (18)

Family Cites Families (5)

• 1997
  • 1997-06-16 KR KR1019970024936A patent/KR100215917B1/ko not_active IP Right Cessation
• 1998
  • 1998-06-10 JP JP11504189A patent/JP2000505763A/ja active Pending
  • 1998-06-10 AU AU77899/98A patent/AU7789998A/en not_active Abandoned
  • 1998-06-10 EP EP98925959A patent/EP0917516A1/en not_active Withdrawn
  • 1998-06-10 CN CN98800850A patent/CN1229389A/zh active Pending
  • 1998-06-10 WO PCT/KR1998/000152 patent/WO1998057846A1/en not_active Application Discontinuation

Non-Patent Citations (1)

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