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Oil water separator

  • US 9,707,494 B2
  • Filed: 06/16/2014
  • Issued: 07/18/2017
  • Est. Priority Date: 06/15/2013
  • Status: Active Grant
First Claim
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1. An oil water composite fluid separator, comprising:

  • a frame supporting a tank having opposing sidewalls connecting to a first end wall and a second end wall which join a pair of inclined bottom panels converging in the center forming an obtuse angle and said tank including a selected level with a fluid comprising a major amount of water and a minor amount of oil defining a water reservoir;

    a pump for transporting an oil water composite fluid from a source to an oil water composite fluid inlet;

    a coalescing chamber in fluid communication with said oil water composite fluid inlet, said coalescing chamber including means for evacuating said coalescing chamber defining a drain, and an opening;

    said coalescing chamber including an inclined cover extending from a top edge of said second end wall inwardly over a selected portion of said coalescing chamber at a selected obtuse angle of up to about 50 degrees, said inclined cover including a top surface and a bottom surface and an edge therebetween extending between said opposing sidewalls and defining a weir for separating a major amount of an oil and a minor amount of said oil water composite fluid from said oil water composite fluid when said coalescing chamber is filled to a selected level and the overflow of the oil water composite fluid spills over said edge and said top surface of said inclined cover defining a liquid conveyor;

    a mechanical oil separation chamber in fluid communication with said coalescing chamber is disposed between said opposing end walls and said coalescing chamber second end wall and a baffle end wall of a concentrate product chamber at a selected depth within said reservoir for accumulation of said major amount of oil and said minor amount of oil water composite fluid from said liquid conveyor;

    a rotating drum assembly including a frame supporting a rotating drum having a bottom portion in fluid communication with said major amount of oil and said minor amount of oil water composite fluid contained in said mechanical oil separation chamber rotates at a selected speed by a motor whereby a concentrate product comprising a lighter density liquid oil removably adheres, absorbs, or adsorbs to a surface of said rotating drum;

    a wiper assembly comprising a blade extending across at least a portion of said rotating drum cooperatively engaging said surface of said rotating drum at a selected angle removing at least a portion of said concentrate product therefrom;

    said wiper is in fluid communication with said concentrate product chamber disposed between said opposing side walls and a reservoir end wall and said rotating drum at a selected depth, said baffle end wall extending upward adjacent said rotating drum at a height above the level of the concentrate product and above the level of the major amount of oil and minor amount of oil water composite fluid, said concentrate product chamber including a discharge port for removal of said concentrate product;

    a purge oil chamber comprises an inner purge oil chamber baffle extends from said bottom panel of said coalescing chamber between said opposing side walls from a first end wall of said coalescing chamber inwardly and upward a selected distance above the level of the oil water composite fluid and an outer purge oil chamber baffle extending upward from said bottom panel of said tank and between said opposing side walls and spaced apart from said first end wall of said coalescing chamber and said first end wall of said tank a selected distance below the level of the oil water composite fluid;

    a clean solution chamber is disposed a selected distance above said tank floor panel and said oil purge chamber baffle extending vertically from a bottom of said clean solution chamber;

    a clean solution chamber in fluid communication with said oil purge chamber is disposed between said opposing side walls above said tank floor adjacent said first tank wall and in fluid communication with an adjustable outlet pipe in fluid communication with a clean water discharge port.

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