Top Filtrate Discharge Patents (Class 210/382)
  • Patent number: 7650998
    Abstract: A grinding water treating apparatus for separating a processing refuse from grinding water used for processing a periphery of an eyeglass lens, the grinding water being introduced from an eyeglass lens processing apparatus, the grinding water treating apparatus includes: a centrifugal separator that includes a dewatering tank having a bottom surface and a side surface and a drive source for rotating the dewatering tank, and springs out the grinding water to an upper portion of the dewatering tank by rotating the dewatering tank; and a drain pipe that introduces the grinding water from an upper portion of the dewatering tank. The centrifugal separator includes a filter arranged at the upper portion of the dewatering tank and having an opening inserted with the drain pipe for filtering the grinding water separated from the processing refuse by a centrifugal force generated due to rotation of the dewatering tank.
    Type: Grant
    Filed: August 31, 2007
    Date of Patent: January 26, 2010
    Assignee: Nidek Co., Ltd.
    Inventors: Motoshi Tanaka, Akihiro Nagura, Kenichi Inaishi
  • Patent number: 6969343
    Abstract: A centrifuge, comprising a distributor for introducing material to be centrifuged and a sieve system having a plurality of axially mutually offset membrane plates, the membrane plates being arranged radially with respect to the distributor and having at least two axially-spaced membrane disks. The sieve system is arranged such that a flow directions of material to be centrifuged emerging from the distributor and a flow direction of particles deposited on the membrane plates are identical. Alos included is centrifugal drum having a centrifugal compartment with the sieve system arranged therein and a piston slide valve for closing the centrifugal drum. The invention is also a method for cleaning the centrifuge, the steps comprising: opening a piston slide valve, thereby allowing a return flow of liquid through the sieeve system; and removeing one or more of substances baked to the sieve system and impurities from the sieve system.
    Type: Grant
    Filed: May 30, 2001
    Date of Patent: November 29, 2005
    Assignee: Westfalia Separator Food Tec GmbH
    Inventors: Wilfried Mackel, Jochen Hamatschek
  • Patent number: 5976388
    Abstract: An improved autologous blood salvage system is provided in which blood is removed from a patient and may be processed in a manner wherein an anticoagulant solution is for cycled for reuse. Further, the system may be employed for contemporaneous blood filtering and red blood separation. In one embodiment, anticoagulated blood is contemporaneously filtered and defoamed within a rotating processing bowl, while red blood cells are separated, washed and collected within the bowl and an anticoagulant solution is cycled from the bowl for re-use. During a red blood cell removal mode, the flow of anticoagulated blood into the bowl may be suspended/terminated and the bowl pressurized to remove the red blood cells. The improved system provides for the recovery of a high quality red blood cell product, with reduced processing time requirements/user training, and reduced disposable componentry and related costs.
    Type: Grant
    Filed: May 20, 1997
    Date of Patent: November 2, 1999
    Assignee: Cobe Cardiovascular Operating Co., Inc.
    Inventor: Gary Allen Carson
  • Patent number: 5401407
    Abstract: Apparatus for continuously separating relatively coarse particles from a suspension of a mixture of particles in a liquid, wherein the suspension is caused to pass through a screening medium which is rotating in its own plane and wherein the screening medium extends over and across the upper end of a rotary drum having generally downwardly depending side walls and wherein the side walls diverge outwardly in a downward direction.
    Type: Grant
    Filed: April 7, 1993
    Date of Patent: March 28, 1995
    Assignee: ECC International Ltd.
    Inventors: Thomas R. Jones, Reginald L. Phillips, Hugh R. Falcon-Steward
  • Patent number: 5006260
    Abstract: The invention relates to a process and an apparatus for the separation of a dispersed phase in emulsion or in suspension in a continuous phase of a different density. The process comprises causing the emulsion to circulate in a coalescing enclosure (1) containing a filling (11) having an inherent volume of particles or fibers which is slight with respect to the useable volume of the enclosure, and causing the filling to move with respect to the emulsion in such a manner that the particles or fibers thereof sweep the enclosure with an average speed which is high with respect to the flow speed of the emulsion in the enclosure. The invention is particularly applicable for the separation of hydrocarbons or fatty bodies dispersed in an aqueous effluent.
    Type: Grant
    Filed: May 26, 1989
    Date of Patent: April 9, 1991
    Assignee: Institut National des Sciences Appliquees de Toulouse
    Inventors: Henri Roques, Yves Aurelle, Louis Lopez
  • Patent number: 4888965
    Abstract: A liquid diverter is provided in an automatic washer to cause a spray of liquid to impact on the side wall of the tub above a top level of perforations of the basket to assure that any suds or other extraneous matter is rinsed from the tub wall at such an elevation and is not allowed to remain there after a given wash cycle. The diverter is in the form of a ring which is carried on and rotates with the wash basket and includes a plurality of downwardly depending rib pairs which support therebetween a liquid intercepting wall and an inclined channel. The inclined channel directs the liquid upwardly when the basket is spinning so that the diverted liquid will impact against a higher elevation of the tub wall.
    Type: Grant
    Filed: October 5, 1988
    Date of Patent: December 26, 1989
    Assignee: Whirlpool Corporation
    Inventors: Richard L. Fanson, Ralph E. Denny
  • Patent number: 4879031
    Abstract: A blood centrifugation cell has an outer container, a volume displacement inner body having a central passage, and an inlet conduit extending through the central passage to the bottom of the container. A seal is provided at the lower end of the body sealing the space between the inner conduit and the central passage. The seal permits red blood cells to be sucked from the container at any time during centrifugation without waiting for the cell to become completely filled.
    Type: Grant
    Filed: April 6, 1988
    Date of Patent: November 7, 1989
    Assignee: Dideco S.p.A.
    Inventor: Ivo Panzani
  • Patent number: 4717478
    Abstract: In apparatus for removing water and impurity components from sand, there are provided a rotary member having an opening at one end for charging and discharging sand and a filter for passing water. The rotary member is supported by a support and driven by a variable speed motor. Piston-cylinders or the like are provided for tilting the support. In a modified embodiment, two of the rotary bodies are juxtaposed with their openings faced each other. A peripheral wall of the rotary member is provided with a member of perforations for discharging water separated from sand.
    Type: Grant
    Filed: June 12, 1986
    Date of Patent: January 5, 1988
    Assignee: Kitagawa Iron Works Co., Ltd.
    Inventors: Hisashi Shiraki, Toshio Nagahisa, Kiyonori Takeda, Takeshi Harada
  • Patent number: 4184951
    Abstract: A method of cleaning a liquid which is conducted centrally and from the top in a strainer provided with a closed casing within a centrifugal drum. The bottom of said strainer is formed by a screen and is shut off at the top by a cover comprising screen holes and a central opening. During the centrifuging of the liquid a fluid jet is directed to the rotating cover in situ of the screen holes, while the water emerging from the screen holes is collected in a housing surrounding the drum and discharged.
    Type: Grant
    Filed: July 3, 1978
    Date of Patent: January 22, 1980
    Inventor: Gerardus T. A. M. Wientjens
  • Patent number: 4175040
    Abstract: A centrifugal oil-water separator comprising an inner spinning bowl having openings near the lower outer periphery for passage of water therefrom into an outer bowl which remains stationary. The oil-water mixture is passed to the upper center of the spinning bowl with separation of the oil and water therein, concentrating the oil near the top of the inner bowl and disposable water is removed from the outer bowl.
    Type: Grant
    Filed: August 28, 1978
    Date of Patent: November 20, 1979
    Assignee: Continental Oil Company
    Inventors: John K. Sammons, Charles H. Fox, Jr.
  • Patent number: 4135659
    Abstract: In a horizontal centrifugal separator there is included a housing that rests by means of cushioned supports upon the ground, foundation, or the like, with the housing providing for the bearing mounting of a shaft that connects with a revolvable bowl, with both of said shaft and bowl being arranged substantially along a horizontal axis; the bowl includes a series of vanes extending from its interior surface, arranged between its base and the rim portion, with the rim portion having a series of perforations therethrough so as to allow for separation of the coolant from the metal chips as accumulated in the metal working industry. A chute also mounts upon the housing and has its discharge end extending into the bowl, and further includes a deflector that is arranged approximate its end, and therein allows for the continuous delivery of chips to the bowl and their uniform distribution along its interior surface to facilitate the centrifugal separation of any coolant from the chips.
    Type: Grant
    Filed: November 8, 1976
    Date of Patent: January 23, 1979
    Assignee: Centrifugal & Mechanical Industries, Inc.
    Inventors: Harry E. Derton, Dewey M. Cope