Class 209/720 - Including specific underflow outlet feature (e.g., apex discharge, etc.)

Subclass of Class 209 - Classifying, separating, and assorting solids
Definition: Methods and apparatus provided with details of a passage
No. of patents: 36
Last issue date: 08/19/2008

Number	Title	Issue Date
7413669	Separator for liquids and/or multiphase fluids A separator including a conical member having a base; a substantially cylindrical member extending from the base; a separator inlet for introducing liquid to be separated into the conical member in a substantially tangential direction with respect to a sidewall of t...	08/19/2008
7347333	Ultra clean air separator system A system and process for separating high and low density materials by air flow. Mixed solid material is delivered into an entrance of a cascade separation chamber where it is allowed to free fall and tumble over inclined surfaces. A fan forces air through a “close...	03/25/2008
7293657	Hydrocyclone and method for liquid-solid separation and classification Hydrocyclone and method for separating and classifying solids in which a slurry is introduced into the cylindrical inlet section of the separation chamber of the hydrocyclone so that the slurry rotates about the axis of the chamber, then passes through a first conic...	11/13/2007
7241393	Method and apparatus for separating solids from a slurry Method and apparatus for separating components of a slurry comprising solid particles and liquid components, particularly where the slurry is under pressure. The components are separated in a hydrocyclone such that a solids-enriched slurry exits the separator via an...	07/10/2007
7185765	Cyclone with in-situ replaceable liner system and method for accomplishing same Cyclones having abrasion resistant liners with a system and method for replacing the liners when they worn out due to the destructive nature of the materials being classified in the cyclone. The cyclone includes segmented inlet housing liners which are separately re...	03/06/2007
7108138	Material classifier A material classifier includes a cyclone including a cyclone inlet, a cyclone outlet, a blower and a blower discharge; an air diffuser connected at a diffuser inlet to the cyclone outlet and at a diffuser outlet to an air lock such that the cyclone and air diffuser ...	09/19/2006
7000780	Method and device for drying, separating, classifying and decomposing recoverable waste products Method and apparatus used in the field of waste management, especially a method and a device for treating recoverable waste products that have already partially decomposed. The aim of the invention is to provide a method and a device which makes it possible to furth...	02/21/2006
6983850	Hydrocyclone roping detector and method An ultrasonic sensor is mounted on the splash skirt at the underflow outlet of a hydrocyclone to detect a change in the underflow discharge from the normal conical shape in which the discharge impacts upon the splash skirt to a more cylindrical shape associated with...	01/10/2006
6849182	Hydrocyclone having unconstrained vortex breaker A hydrocyclone having a flat lower plate 14 contains a tube or rod 22 placed unconstrained within the body 10. The tube or rod 22 acts as a vortex breaker, reducing the rate at which air is introduced through the center of the vortex at t...	02/01/2005
6596169	Cyclone Disclosed is dense medium cyclone for separating particles of varying sizes from within a fluid stream. The particles to be separated are entrained within the fluid stream. The fluid stream is then introduced into a cyclone that includes a body and a side...	07/22/2003
6544416	Systems and methods for separating solids from a fluid environment A system and method for separating solids from a fluid environment is provided. The system includes a device having housing with a substantially cylindrical upper portion and a substantially conical lower portion. The device also includes a chamber at an ...	04/08/2003
6238579	Device for separating solid particles in a fluid stream The present invention provides for discharge (exit) ports for exit fluid flow disposed at or adjacent to one another on one end of a vortex separating body; an inlet port(s) disposed at one end of a separating body having discharge (exit) ports for exit f...	05/29/2001
6190543	Cyclonic separator A cyclonic separator for separating fluids of differing densities comprises a first chamber having a vortex finder and a core member. The vane is arranged co-axial with and adjacent the internal surface of the vortex finder to increase the rotational velo...	02/20/2001
6024874	Hydrocyclone separator A hydrocyclone separator (10) has an outer housing (12) including an upper housing portion (14) and a lower housing portion (16). Upper housing portion (14) has a cylindrical chamber (22) and an involuted entrance (20) to cylindrical chamber (22). A vorte...	02/15/2000
5965021	Hydrocyclone There is provided a hydrocyclone which operates on a relatively low pressure differential and on a linear flow principle. The hydrocyclone comprises an inlet chamber with a vortex creating a spiral insert therein, which inlet chamber opens in to a frustoc...	10/12/1999
5934483	Bi-chamber air classifier with coaxial ascending dispersed feed Apparatus of theforced air vortex type for classification of particulate material into a fine portion and a coarse portion, the apparatus comprising a truncated cone shaped upper section (101) comprising a separating wheel (111) rotating about a substanti...	08/10/1999
5693225	Downhole fluid separation system A downhole fluid separation system is used with submergible pumping systems to separate downhole fluids into different density fluids, recover the lighter fluids to the earth's surface, and dispose the heavier fluids downhole. The fluid separation system ...	12/02/1997
5571416	Continuous drain for solids separated by a centrifugal separator A centrifugal liquid/solids separator includes a cylindrical separation chamber into which a liquid/solid mixture is tangentially introduced. At least some of the solids separate and migrate to a lower collection chamber. A drain port from the collection ...	11/05/1996
5514271	Underflow cyclone with perforated barrel A cyclone and process for fluidized catalytic cracking of heavy oils is disclosed. Gas and entrained solids are added tangentially around a vapor outlet tube in a cylindrical tube cyclone body. Solids and some gas is withdrawn via a plurality of openings ...	05/07/1996
5437794	Hydrocyclone with turbulence creating means In a hydrocyclone the separation chamber (2) has a circumferential wall (3) provided with at least one turbulence creating member (12), which extends along the circumferential wall and crosses a helical path (10) along which a liquid stream is generated d...	08/01/1995
5269949	Modified anti-suction cyclone separation method and apparatus The modified anti-suction air cyclone method and apparatus insulate the air core base as a most suction active part of the air core to prevent separated particles from being entrained from the cyclone walls into the inner vortex. Use of the air core bed c...	12/14/1993
5246575	Material extraction nozzle coupled with distillation tower and vapors separator A material extraction nozzle for separating a mixture of materials having different densities, comprising: a nozzle body shell having an outer surface with a tangentially located material inlet at an upper portion thereof and an inner surface defining in ...	09/21/1993
5141644	Buoyed flapper valve A buoyed flapper valve comprises a flapper which is capable of closing an exit of a dipleg or standpipe, which is also connected to a counterweight and a float. The float has sufficient buoyancy to as to overcome the weight of the counterweight when the v...	08/25/1992
5071542	Anti-suction cyclone separation method and apparatus The anti-suction air cyclone method and apparatus insulate the most suction active part of the air core in an air core bed to prevent separated particles from being entrained from the cyclone walls into the inner vortex. Use of the air core bed increases ...	12/10/1991
4842145	Arrangement of multiple fluid cyclones A special form of fluid cyclone in which the velocity energy in the exit fluid is converted into exit pressure, thus permitting the device to discharge to atmospheric pressure or a higher pressure while a vacuum may exist in the central core of the vortex...	06/27/1989
4623458	Quick release expendable apex apparatus with bonded liner A quick release apex apparatus for a cyclone includes a semirigid cast urethane, neoprene/fiberglass, or plastic housing having a liner chemically bonded to the interior of the semirigid housing. The semirigid housing includes an integral splash skirt and...	11/18/1986
4541934	Quick release cyclone apex system A quick release apex apparatus for a cyclone includes a semirigid cast urethane, neoprene or rubber apex with an integral splash skirt and an upper annular flange for clamping the apex to the bottom flange of a cone of the cyclone. A quick release split r...	09/17/1985
4486207	Apparatus for reducing attrition of particulate matter in a chemical conversion process An apparatus for separating solid particles from vapor is disclosed. The apparatus includes a novel inlet system, a novel particle outlet system and a chamber having novel dimensional relationships which result in an apparatus that separates solid particl...	12/04/1984
4451358	Noncircular rejects outlet for cyclone separator The use of rejects outlets in vortex separators having internal walls which gradually transform from a circular cross-section into openings which are noncircular in cross-section has been found to be effective in controlling the rejects rate and the thick...	05/29/1984
4337068	Methods for removing entrained solids from gases A method for the removal of entrained solids from gases in a cyclone separator having a dipleg attached to the bottom thereof comprises the basic steps of, (1) injecting the gases with the entrained solids in an inlet (54) of cyclone separator in the rang...	06/29/1982
4269701	Cyclone separator for the removal of heavy particles and dust particles from fibre material A cyclone separator for separating heavy particles and dust particles from fibre material. The separator includes a cyclone housing (2), an inlet tube (9) that opens substantially tangentially into the housing (2), an overflow pipe (6) for the removal of ...	05/26/1981
4226708	Variable wall and vortex finder hydrocyclone classifier A housing defining a generally cylindrical chamber is provided and the chamber is closed at one end. Inlet structure is provided for admitting fluid flow suspended materials into the chamber intermediate the opposite ends thereof and in a direction extend...	10/07/1980
4211641	Circulating air classifier or separator Circulating air classifier having a separator chamber containing an impeller rotatable about a vertical axis, and a funnel-shaped pre-separator disposed underneath and in open communication with the separator chamber. A blower forces air through a conduit...	07/08/1980
4156485	Vortex cleaner A vortex cleaner for separating a gaseous or liquid suspension, as for instance a paper pulp suspension, into fractions comprises an elongate vortex chamber which has a circular cross-section and tapers gradually, over at least part of its axial length, t...	05/29/1979
4149861	Cyclone separator A cyclone separator comprising a separating tower defining a separating chamber having a gas inlet at the upper portion for introducing gaseous fluid having particles suspended therein with a tangential velocity component, and outlet pipe means co-axially...	04/17/1979
4005998	Separation process Particulate solids are separated from their admixture with gases or vaporized liquids by passage through a specially designed cyclone separator wherein the solids are passed down the separator to a plate modified with a circumferential groove leading to a...	02/01/1977

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Class 209/720 - Including specific underflow outlet feature (e.g., apex discharge, etc.)