Centrifugal Patents (Class 366/263)
  • Patent number: 10245572
    Abstract: A fluid mixing system including, an upper assembly, comprising a submersible pump housed therein; a base assembly connected to the upper assembly, the base assembly comprising one or more diffusers connected to opposing end portions of the base assembly; and a fluid path fluidly connecting the upper assembly and base assembly, wherein the fluid path extends from an outlet of the submersible pump to the one or more diffusers, and wherein the one or more diffusers are configured to provide a fluid outlet from the fluid path to create movement of fluid within a fluid reservoir.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: April 2, 2019
    Assignee: Potable Water Solutions, LLC
    Inventor: Harry Bailey, III
  • Patent number: 9863440
    Abstract: Submersible pump which comprises: a first motor provided with a first outlet shaft; a pumping body in which an impeller is housed that is fixed to the first outlet shaft of the first motor and drivable by the latter in order to pump a process fluid from a suction mouth to a delivery mouth of the pumping body itself; a support casing fixed to the pumping body and provided, at a lower end thereof, with an inlet opening through which a flow of the process fluid is susceptible to enter into the support casing itself; a dispersion head arranged at the lower end of the support casing and drivable in order to remove detrital material, which is conveyed by the flow of the process fluid into the inlet opening of the support casing.
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: January 9, 2018
    Assignee: DRAGFLOW S.R.L.
    Inventors: Stefano Pol, Mariano Gardoni, Mario Sauro
  • Patent number: 9452396
    Abstract: The invention relates to a dispersing rotor for homogenizing free-flowing media. According to the invention, the rotor-toothing formation forms a labyrinth toothing formation for a medium passing radially outward. The invention allows effective homogenization of free-flowing media by this rotor alone, without interaction with a stator-toothing formation being necessary.
    Type: Grant
    Filed: June 1, 2012
    Date of Patent: September 27, 2016
    Assignee: NETZSCH VAKUMIX GMBH
    Inventor: Erwin Seefried
  • Patent number: 9375691
    Abstract: Blending particulate and liquid to make slurry for use in oilfield operations is addressed. The blender has an upwardly facing particulate expeller with a flat base, raised hub, and generally radially extending, circumferentially spaced vanes extending upwardly from the base. The vanes extend from leading edges spaced about a vane inner diameter to tips spaced about a vane outer diameter. Adjacent expeller vanes define expeller passageways therebetween. The particulate expeller does not serve as a meaningful liquid impeller and the blender does not act significantly as a pump. The expeller has a several preferred diameter, clearance, height and length dimensions and ratios. Wide, deep expeller inlets and shallow, narrow outlets enhance particulate entry and minimize expeller torque. Vane extensions impart velocity to the particulate upon contact and minimize sensitivity to particulate entry velocity. Maximized circumferential overlap of adjacent vanes reduces liquid back-flow.
    Type: Grant
    Filed: September 11, 2012
    Date of Patent: June 28, 2016
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Calvin Lynn Stegemoeller, Chad A. Heitman, Stanley V. Stephenson, Herbert John Horinek
  • Patent number: 9371834
    Abstract: A centrifugal pump that includes a casing in which an impeller is arranged. The impeller has a back side that faces a back plate of the centrifugal pump, and one or more vanes for pumping the fluid. The back side of the impeller includes a segmented scraper for scraping from the back plate material that has been deposited from the fluid. The segmented scraper includes multiple protrusions, wherein each protrusion of the multiple protrusions is facing the back plate, and an aggregated radial extension of the protrusions equals a radius of the impeller within an interval of ±10%, ±25% or even up to ±40%.
    Type: Grant
    Filed: May 3, 2011
    Date of Patent: June 21, 2016
    Assignee: ALFA LAVAL CORPORATE AB
    Inventor: Poul Anton Daugaard
  • Patent number: 9370755
    Abstract: A rotor/stator type mixer implements the particle size breakup apparatus and includes a stator having a plurality of openings formed thereon and a rotor disposed on the inside of the stator and spaced away from the stator with a specific gap. The rotor, which is disposed inwardly of the stator having the plurality of openings formed thereon so that it can be spaced away from the stator with the specific gap, has a rotor peripheral wall that faces opposite the inside of the stator peripheral wall and is disposed inwardly radially of the peripheral wall of the stator having the plurality of openings formed thereon so that it can be spaced away from the stator with the specific gap. In addition, the rotor has a plurality of openings formed thereon.
    Type: Grant
    Filed: August 16, 2012
    Date of Patent: June 21, 2016
    Assignee: MEIJI CO., LTD.
    Inventor: Tetsu Kamiya
  • Patent number: 9168496
    Abstract: A method and apparatus for blending liquids and granular materials in which an impeller assembly is mounted for rotation within a housing at a lower end of a particles inlet and circumferentially spaced impeller vanes in outer concentric relation to a series of expeller vanes surrounding the particles inlet and which together propel the solid particles outwardly to intermix with the liquid introduced into the annulus surrounding the impeller assembly, the annulus being tapered or reduced in area in a direction counter to the direction of slurry flow in order to boost the pressure of the slurry discharged through an outlet port.
    Type: Grant
    Filed: August 5, 2013
    Date of Patent: October 27, 2015
    Assignee: NOV Condor, LLC
    Inventor: Jorge O. Arribau
  • Patent number: 8708550
    Abstract: A fluid is processed between processing surfaces capable of approaching to and separating from each other, at least one of which rotates relative to the other. A first fluid is introduced between processing surfaces, by using a micropump effect acting with a depression arranged on the processing surfaces from the center of the rotating processing surfaces. A second fluid, independent of this introduced fluid, is introduced from another fluid path that is provided with an opening leading to the processing surfaces, whereby the processing is done by mixing and stirring between the processing members.
    Type: Grant
    Filed: July 4, 2008
    Date of Patent: April 29, 2014
    Assignee: M. Technique Co., Ltd.
    Inventor: Masakazu Enomura
  • Patent number: 8672029
    Abstract: A technique facilitates mixing operations by removing foaming that results from air entrained during mixing of constituents. A mixing system comprises a container body having an interior and an inlet through which material enters the interior for mixing. The container body also comprises a discharge through which the mixed material is delivered downstream. A mechanical foam breaker is disposed within the container body and extends upwardly a sufficient distance to extend through a surface level to which the material rises during mixing within the container body. The mechanical foam breaker is oriented to break down foam along the surface of the material as the material moves through the interior.
    Type: Grant
    Filed: December 30, 2009
    Date of Patent: March 18, 2014
    Assignee: Schlumberger Technology Corporation
    Inventors: Brian Goddard, Josh Rayner, Michael Woodmansee, Philip Zsiga
  • Patent number: 8641266
    Abstract: A novel apparatus is disclosed which comprises: (a) pumping means for injecting a fluid through a conduit means into an inlet pipe of a fluid mixing tank, (b) said fluid mixing tank comprising a plurality of compartments connected in series and in fluid communication with adjacent compartments in the series, and designed to provide for a horizontal flow of fluids from the first compartment to the last compartment in the series, (c) at least one compartment being equipped with one or more radial-flow impellers connected to a vertical shaft, and means for rotating such impellers at a rate designed to stir the contents of the compartment radially with high shear and prevent fluid stagnation, (d) at least one compartment being equipped with one or more axial flow impellers connected to a vertical shaft, and means for rotating such impellers at a rate designed to circulate the contents of the compartment vertically, (e) the inlet pipe being designed to introduce fluids into the first compartment, and (f) a means
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: February 4, 2014
    Inventor: William Ray McIntire
  • Patent number: 8534907
    Abstract: A device for accelerating mixing and dissolving processes of liquid water and powder. The device includes a main body formed in a bottle cap shape including a top surface and a side periphery surface, and a shaft disposed at a center of an upper portion of the main body in such a manner as to be inserted into a shaft insertion groove formed at a center of an impeller. The top surface of the main body has two or more introducing portions to introduce the liquid water and the powder into the device, and the side periphery surface of the main body has two or more discharging portions to discharge the liquid water and the powder introduced into the device through the two or more introducing portions to the outside of the device.
    Type: Grant
    Filed: June 18, 2012
    Date of Patent: September 17, 2013
    Assignee: Ostar Tech Co., Ltd.
    Inventor: Jong Bok Yum
  • Patent number: 8469585
    Abstract: The present invention is directed to an in-line mixer for mixing a plurality of fluids to produce a mixed product. The mixer includes one or more mixing chambers, an impeller in each of the mixing chambers, one or more inlets coupled to injection valves for conveying the fluids into the mixing chamber, and an outlet for conveying the mixed product out of the mixing chamber. The in-line mixer is well suited to components, such as those used in making automotive OEM and refinish paints.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: June 25, 2013
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Antonio Retamal
  • Patent number: 8328410
    Abstract: The present invention is directed to an in-line mixer for mixing a plurality of fluids to produce a mixed product. The mixer includes one or more mixing chambers, an impeller in each of the mixing chambers, one or more inlets coupled to injection valves for conveying the fluids into the mixing chamber, and an outlet for conveying the mixed product out of the mixing chamber. The in-line mixer is well suited to components, such as those used in making automotive OEM and refinish paints.
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: December 11, 2012
    Assignee: E I du Pont de Nemours and Company
    Inventor: Antonio Retamal
  • Patent number: 8071034
    Abstract: The present invention relates to a device with a rotating fluidized bed in one or a succession of cylindrical chambers, in which injectors (12), distributed around the fixed circular wall (2) of said cylindrical chamber(s), inject along this wall, in successive layers, one or more fluids (13), which entrain the solid particles (17), passing through this/these chamber(s), in a movement of rapid rotation whereof the centrifugal force concentrates these particles along this wall, thereby forming a fluidized bed rotating around a central duct or a plurality of central ducts (3), through which the fluids are removed. The present invention further relates to a method of catalytic polymerization, drying or other treatments of solid particles in suspension in a rotating fluidized bed or of catalytic conversion of fluids passing through said rotating fluidized bed using a device according to the present invention.
    Type: Grant
    Filed: December 15, 2005
    Date of Patent: December 6, 2011
    Inventor: Axel de Broqueville
  • Patent number: 8020313
    Abstract: The present invention provides methods and apparatus for the separation of volatile components from a feed material.
    Type: Grant
    Filed: February 4, 2010
    Date of Patent: September 20, 2011
    Assignee: TD*X Associates LP
    Inventors: Carl R. Palmer, Michael J. McElwee, Gregg S. Meyers
  • Publication number: 20110211421
    Abstract: An apparatus for transporting and mixing materials includes a horizontally disposed container supported by a trailer, a motor mounted on the outside of the container, a shaft coupled to the motor and horizontally disposed in the container, and a mixing pedal coupled to the shaft and horizontally disposed in the container. The apparatus may include adjustably angled mixing pedals, and also adjustably angled fins. The apparatus may include a second chamber in the container including a second motor, a second shaft and a second mixing pedal. The apparatus may include a centrifugal pump for moving fluids into and out of the two chambers, as well as between the two chambers. The centrifugal pump may also power the two motors hydraulically.
    Type: Application
    Filed: November 3, 2009
    Publication date: September 1, 2011
    Inventors: Daniel A. Doron, Leo S. Doron
  • Patent number: 7998421
    Abstract: A method of processing a fluid and/or a particulate material, the method comprising the steps of: (a) introducing the particulate material into a chamber; (b) providing a flow of fluid into said chamber for entraining the particulate material; and (c) removing processed fluid and/or particulate material from the chamber; wherein the chamber comprises a processing zone having a substantially circular transverse cross-section, the fluid flow being introduced into the processing zone at an angle of between 10° and 75° with respect to a tangent of the substantially circular transverse cross-section of the processing zone to establish a fluid flow following a substantially helical path in the processing chamber.
    Type: Grant
    Filed: September 23, 2005
    Date of Patent: August 16, 2011
    Assignee: Mortimer Technology Holdings Limited
    Inventor: Christopher Edward Dodson
  • Patent number: 7954992
    Abstract: A device and method of transporting and blending substances into a container of fluid.
    Type: Grant
    Filed: June 25, 2007
    Date of Patent: June 7, 2011
    Inventor: Frank A. Tytar
  • Patent number: 7942572
    Abstract: A multistage process for the continuous production of an emulsion comprising subjecting at least two immiscible liquids to a sequence of at least two mixing stages carried out in at least two successive stator-rotor devices, wherein a peripheral outlet from a first stator-rotor device is connected to an axial inlet in the successive stator-rotor device by means of a duct in which the Reynold number ReT inside said duct is higher than 5000, and the peripheral velocity of each rotor of said stator-rotor devices ranges from 5 to 60 m/s.
    Type: Grant
    Filed: September 30, 2004
    Date of Patent: May 17, 2011
    Assignee: Basell Poliolefine Italia s.r.l.
    Inventors: Arrigo Arletti, Paolo Vincenzi
  • Patent number: 7507343
    Abstract: The device of the invention includes the following 5 new elements in each mixer-settler: a) agitators with blunt edged turbines, b) decreasing degree of agitation throughout the series of mixing compartments, c) baffle with a central window in the settler interface, located after the flow buffers, and d) baffle without a window, centered in the settler interface, located after the baffle with a window. These elements allow for an operative method which inhibits secondary dispersion, reducing the formation of micro-droplets, without affecting the mass transfer between the phases. Consequently, this obtains a phase separation process with entrainments so small that it is possible to drastically increase the quality of the product, by obtaining an ultra-pure aqueous extract, simultaneously reducing the settling surface required.
    Type: Grant
    Filed: May 25, 2005
    Date of Patent: March 24, 2009
    Assignee: Tecnicas Reunidas S.A.
    Inventors: Daniel Martin San Lorenzo, Gustavo Diaz Nogueira, Maria Frades Tapia
  • Patent number: 7418829
    Abstract: An apparatus is disclosed for the production of frozen ice-cream mass with solid ingredients, which in the finished ice-cream mass will appear substantially as inclusions which distinguish themselves by flavour, appearance and/or consistency from the surrounding homogenous ice-cream mass. The apparatus comprises a first through-flow freezer for cooling of a continuous flow of mass, and a second through-flow freezer for further cooling of the continuous flow of mass, where a mixing-in arrangement for the mixing of solid ingredients into the continuous flow of mass is inserted between the through-flow freezer and the second through-flow freezer. It is hereby achieved that the mixing-in of the solid ingredients takes place in the frozen ice-cream mass when this has a temperature between ?3° C. and ?7° C. at which the viscosity of the mass is low.
    Type: Grant
    Filed: March 30, 2004
    Date of Patent: September 2, 2008
    Assignee: Tetra Pak Hoyer A/S
    Inventor: Henrik Guldmann Rasmussen
  • Patent number: 7281839
    Abstract: A high-speed turbine mixer combines water and cement into a pre-mixed cement paste that is added to aggregates to create a concrete mix. The turbine mixer includes a housing that cooperates with an auger to move dry cement into a mixing chamber where water is added. A mixing plate rotates at high speed to break up water and cement into small particles that enhances the hydration of the cement and increases the air content in the resultant cement paste. The cement paste is then conveyed to a mixing auger to be combined with aggregates to create a concrete mix. The mixing plate divides the mixing chamber to force the mixing water and cement particles to pass through a circumferential annular opening past agitating fins. Admixtures can be added to the cement as a powder or to the water as a liquid for incorporation into the cement paste.
    Type: Grant
    Filed: February 25, 2004
    Date of Patent: October 16, 2007
    Assignee: Zimmerman Industries, Inc.
    Inventor: Harold M. Zimmerman
  • Patent number: 6857774
    Abstract: The present invention provides for a cavitational mixing and/or pumping device and method including a body having a base portion and a peripheral wall extending from the base portion and defining an inlet space therebetween. Additionally, the base portion includes at least one inlet port disposed therein that is in fluid communication with the inlet space. The peripheral wall includes an outlet channel disposed therein that is in fluid communication with the inlet space. A cavitation assembly is disposed within the outlet channel. Alternatively, a plurality of cavitation assemblies may be disposed within the outlet channel.
    Type: Grant
    Filed: August 2, 2002
    Date of Patent: February 22, 2005
    Assignee: Five Star Technologies, Inc.
    Inventor: Oleg V. Kozyuk
  • Patent number: 6855299
    Abstract: The disclosed apparatus includes a stator and a rotor disposed for rotation within the stator. An inner wall of the stator defines one or more collider chambers. Rotation of the rotor causes movement of fluid disposed between the rotor and stator and establishes a rotational flow pattern within the collider chambers. The fluid movement induced by the rotor increases the temperature, density, and pressure of the fluid in the collider chamber.
    Type: Grant
    Filed: June 8, 2000
    Date of Patent: February 15, 2005
    Inventor: Kenneth J. Southwick
  • Publication number: 20040032792
    Abstract: A processing apparatus for fluid with a simple structure, high productivity, ability of precise dispersion, emulsification and grinding, is provided.
    Type: Application
    Filed: July 16, 2003
    Publication date: February 19, 2004
    Inventor: Masakazu Enomura
  • Patent number: 6491787
    Abstract: A method and apparatus for heating cellulose pulp with steam are provided. Low-pressure (e.g. 3-5 bar (abs.)) steam is supplied into the pulp flowing as a plug flow in such a way that in the flow direction of the pulp, before supplying the low-pressure steam, the pulp is pressurized so that the pulp pressure at the point of the steam introduction is lower than the pressure of the available steam. After the steam is introduced the pulp is mixed with a pressure-raising mixer (such as a fluidizing centrifugal pump) to divide the steam evenly into the pulp and/or to equalize the temperature of the pulp.
    Type: Grant
    Filed: March 28, 2000
    Date of Patent: December 10, 2002
    Assignee: Andritz Oy
    Inventors: Kari Peltonen, Reijo Vesala, Vesa Vikman
  • Publication number: 20020136088
    Abstract: Mixing systems including a radial impeller assembly positioned adjacent a flow opening of a tank are described.
    Type: Application
    Filed: March 23, 2001
    Publication date: September 26, 2002
    Inventors: Julian B. Fasano, Mark Franklin Reeder
  • Patent number: 6328466
    Abstract: A stirring blade unit includes a perforated cylinder formed around the an internal stirring blade so as to be rotated together with the stirring shaft. The perforated cylinder has perforations which are approximately 30 to 50% of the area of the top and bottom surface of the perforated cylinder. The internal stirring blade unit uses a discharge type stirring blade unit used for gas-liquid mixing of a general fermentation tank. Thus, the gas-liquid flow discharged from the blade unit in the horizontal direction hits the perforated cylinder formed around the blade unit certainly. Due to this hitting of the gas-liquid flow against the perforated cylinder, the pressure of the flow is changed significantly to refine the gas bubbles so that the gas absorption property is improved. The stirring blade unit is suitable for gas-liquid mixing necessary for such as, fermentation, aeration, and reaction (hydrogenation and oxidation) tanks.
    Type: Grant
    Filed: August 31, 1999
    Date of Patent: December 11, 2001
    Assignee: Ajinomoto Co., Inc.
    Inventors: Naohiro Kadota, Yoshitaka Teratani, Hisao Ito, Jun Ikeda
  • Patent number: 6280079
    Abstract: A slurry mixing apparatus has a mixing chamber, a rotatable bearing and several blades. The bearing is connected to one end of each of the blades and located in the center of the mixing chamber. Several kinds of the slurries can be mixed rapidly in the apparatus and flowed into the CMP polisher immediately to perform a CMP process. Being mixed by the mixing chamber, the slurry is supplied to the chemical mechanical polisher for polishing.
    Type: Grant
    Filed: December 24, 1998
    Date of Patent: August 28, 2001
    Assignee: United Microelectronics Corp.
    Inventors: Ming-Sheng Yang, Peng-Yih Peng, Chia-Jui Chang, Juan-Yuan Wu
  • Patent number: 6110432
    Abstract: The disclosed apparatus includes a stator and a rotor disposed for rotation within the stator. An inner wall of the stator defines one or more collider chambers. Rotation of the rotor causes movement of fluid disposed between the rotor and stator and establishes a rotational flow pattern within the collider chambers. The fluid movement induced by the rotor increases the temperature, density, and pressure of the fluid in the collider chamber.
    Type: Grant
    Filed: July 15, 1999
    Date of Patent: August 29, 2000
    Inventor: Kenneth J. Southwick
  • Patent number: 5904419
    Abstract: A blender apparatus specifically adaptable for intermixing solid and liquid materials is made up of a housing for an impeller assembly having upper and lower impeller portions and wherein liquid directed into the lower impeller portion is redirected axially into the upper impeller portion for intermixing with solid materials directed into the upper impeller portion and undergo outward radial movement through the upper impeller portion into an outer peripheral area surrounding the impeller portions for subsequent discharge therefrom.
    Type: Grant
    Filed: July 29, 1997
    Date of Patent: May 18, 1999
    Inventor: Jorge O. Arribau
  • Patent number: 5564828
    Abstract: Device for aerating and/or mixing water in a basin, using a means to impart a rotational motion to the water and having guide means (57) which convert the rotational motion into a combined horizontal and vertical motion of the water. Said guide means can be screw-shaped or plate-shaped elements of suitable shape and dimensions.
    Type: Grant
    Filed: December 19, 1995
    Date of Patent: October 15, 1996
    Inventor: Johny H. Haegeman
  • Patent number: 5511881
    Abstract: A rotatably driveable enhanced-flow impeller system is provided for pumping at least one liquid in a tank through an outlet port thereof. A radial flow impeller has a first impeller face disposed proximate the bottom of the tank and proximate or extending into an inlet port for liquids in the tank bottom. The radial flow impeller has a plurality of blades with radially outermost blade tips terminating along a blade terminating circle. Disposed adjacent a second opposing face of the radial flow impeller is a radial flow extension plate which preferably extends radially outwardly along the second face by a radial distance beyond the blade terminating circle. The radial flow extension plate may be fixedly attached to the second impeller face.
    Type: Grant
    Filed: January 6, 1995
    Date of Patent: April 30, 1996
    Assignee: General Signal Corporation
    Inventors: Thomas A. Post, Richard A. Howk, Michael J. Preston
  • Patent number: 5501523
    Abstract: A rotatably driveable enhanced-flow impeller system has a radial flow impeller with a first impeller face disposed proximate the bottom of the tank and proximate or extending into an inlet port for liquids in the tank bottom. The radial flow impeller has a plurality of blades with radially outermost blade tips terminating along a blade terminating circle. The blades and inlet port are contoured to reduce shear stress on the liquids. Disposed adjacent a second opposing face of the radial flow impeller is a radial flow extension plate which preferably extends radially outwardly along the second face by a radial distance beyond the blade terminating circle. The radial flow extension plate may be fixedly attached to the second impeller face.
    Type: Grant
    Filed: April 26, 1995
    Date of Patent: March 26, 1996
    Assignee: General Signal Corporation
    Inventors: Ronald J. Weetman, Richard A. Howk, Thomas A. Post
  • Patent number: 5458414
    Abstract: A method and apparatus for mixing solid and liquid components of a slurry which have settled in a storage tank, suspending the solids in a substantially homogeneous slurry mixture are practiced by directed flow apparatus. A plurality of jet nozzles or propeller mixers is located in the storage tank within an annular band ranging between 25 percent and 75 percent of the radial length from a center of the tank to a tank wall. They are directed either in a tangent direction or at an angle away from the center of the tank to provide a substantially volume-filling mixing flow to suspend the solid slurry component in the liquid slurry component.
    Type: Grant
    Filed: February 8, 1995
    Date of Patent: October 17, 1995
    Assignee: Great Lakes Aqua Sales and Service, Inc.
    Inventors: James M. Crump, Bruce K. Doyle, Jr.
  • Patent number: 5338115
    Abstract: An auger-tube pump mixing device for mixing materials with large density differences while maintaining low stirring RPM and low power consumption. The mixing device minimizes the formation of vortexes and minimizes the incorporation of small bubbles in the liquid during mixing. By avoiding the creation of a vortex the device provides efficient stirring of full containers without spillage over the edge. Also, the device solves the problem of effective mixing in vessels where the liquid height is large compared to the diameter. Because of the gentle stirring or mixing by the device, it has application for biomedical uses where cell damage is to be avoided.
    Type: Grant
    Filed: December 11, 1992
    Date of Patent: August 16, 1994
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventor: David W. Gregg
  • Patent number: 5322357
    Abstract: An apparatus has the capacity to satisfactorily blend a liquid with a powder and pump the resultant viscous slurry in a single stage operation. The apparatus has a vertically oriented drive shaft with a bladed impeller attached to the drive shaft. A housing surrounds a mixing chamber in which the impeller is located. The lower end of a powder inlet tube is disposed in very close proximity to the highest vertical extent of the impeller blades. A liquid enters the mixing chamber exterior of the powder inlet tube. The resultant slurry leaves the mixing chamber via a slurry discharge port.
    Type: Grant
    Filed: June 14, 1993
    Date of Patent: June 21, 1994
    Assignee: Abbott Laboratories
    Inventor: Terrence B. Mazer
  • Patent number: 5292194
    Abstract: A device for preparing liquid to thin pulpy media having an inner chamber 1 is substantially symmetrical about longitudinal axis, and the inner chamber has a neck end and a passage end. An outer circumference of the inner chamber tapers down from the passage and to the neck end. An outer chamber surrounds the inner chamber, and the outer chamber is also substantially symmetrical about the longitudinal axis. The outer chamber communicates with the inner chamber through an opening in the neck of the inner chamber, and an opening in the passage end of the inner chamber. A centrifuge wheel is positioned inside the outer chamber and outside the inner chamber. The centrifuge wheel has an intake pipe extending from a center of the centrifuge wheel, and this intake pipe extends into the neck opening of the inner chamber. The centrifuge wheel and the intake pipe are substantially symmetrical with, and rotate about the longitudinal axis.
    Type: Grant
    Filed: February 14, 1991
    Date of Patent: March 8, 1994
    Inventor: Dieter Gabor
  • Patent number: 5282980
    Abstract: A method for treating liquid waste water sludge after its generation and separation from the waste liquid involves forcibly impacting sludge particles and microbial cells against a contact surface to thereby fragment the particles into smaller-sized particles and break apart the organic cells. As a result of such a fragmentation process, water located in the pores of the sludge particles is released, thereby enhancing a subsequent dewatering process performed on the sludge. The destruction of the cells permits a subsequent solids digestion process to work more efficiently, while also permitting a more complete conversion to dissolved sugars, proteins and carbon dioxide.
    Type: Grant
    Filed: November 24, 1992
    Date of Patent: February 1, 1994
    Assignee: Kinetic Dispersion Corporation
    Inventors: S. Alan Kew, Robert M. Kritzer, Bruce E. Soule
  • Patent number: 5240327
    Abstract: The invention relates to a method for mixing liquids into each other or different phases into liquid by employing a double loop circulation, created below the surface zone of a reactor, in order to maintain an intensive mixing. It is characteristic of this Bottom Toroidal Roll or BTR principle that the employed mixer has a strong bottom draft and presses obliquely downwards, and that the mixer is installed according to the mixing method of this invention and that the flow pattern thereof is controlled in an exactly determined fashion. In our method the mixer jet hits the cylinder surface of the reactor, so that the jet is divided into two roughly equal parts by adjusting this distribution by means of a back-flow guiding member of the invention, which guiding member is located above the mixer. The rolling motion taking place in the reactor is controlled by means of specific baffles.
    Type: Grant
    Filed: October 25, 1991
    Date of Patent: August 31, 1993
    Assignee: Outokumpu Oy
    Inventors: Bror G. Nyman, Seppo S. Jounela, Launo L. Lilja, Valto J. Makitalo
  • Patent number: 5240599
    Abstract: A method and apparatus for fragmenting waste water sludge particles to destroy sludge particles and to enhance a dewatering process performed on the sludge. Sludge is passed through a slotted rotor that centrifugally propels the sludge through slots in a surrounding annular stator. Sludge particles forcibly impact against the side surfaces of the stator slots to fragment into smaller sized particles. During the fragmentation process water located in the pores of the sludge particles is released. The free water can later be separated from the sludge in a dewatering apparatus. When passing through the rotor and stator slots, organic cells are broken apart and a portion of each is converted to dissolved sugars and proteins.
    Type: Grant
    Filed: February 18, 1992
    Date of Patent: August 31, 1993
    Assignee: Kinetic Dispersion Corporation
    Inventors: S. Alan Kew, Robert M. Kritzer, Bruce E. Soule
  • Patent number: 5198156
    Abstract: The turbine agitator assembly including a reservoir for liquid, a rotor mounted in the reservoir and with a plurality of radially extending blades, and sparger means for introducing a fluid into liquid in the reservoir. The fluid sparger means and the rotor are so constructed and arranged that, in use, the rotor blades (submerged in the liquid) and/or the liquid flow they generate disperse the sparged fluid. Each of the blades is hollow and has a discontinuous leading edge, only a single trailing edge along an acute angle, no external concave surface and an open radially outer end.
    Type: Grant
    Filed: May 6, 1992
    Date of Patent: March 30, 1993
    Assignee: Imperial Chemical Industries PLC
    Inventors: John C. Middleton, Colin Ramshaw
  • Patent number: 5176447
    Abstract: A mixer is disclosed for absorbing and mixing gases in liquids, or for mixing a liquid with another liquid and/or atomizing a liquid in a gas. The mixer includes an impeller with blades which are bent backward, the blades being surrounded on both sides by a front wall comprising an exhaust opening and a back wall sealing off at least the entire conveying area. A sectional chamber, which is built together with the coaxial hollow main shaft stub, is constructed in the shaft of the impeller and at least two blades are assembled with a pipe for propellant. The inner end of the pipe adjoins a sectional chamber and a nozzle is provided on the outer end. The impeller is closed off with a casing, injectors coaxial with primary nozzles are led through a casing, a mixing nozzle of the injectors is attached on three sides to the casing of the impeller, the front wall and the back wall while connected with a blade on the fourth side.
    Type: Grant
    Filed: February 2, 1990
    Date of Patent: January 5, 1993
    Assignee: Energiagazdalkodasi Intenzet
    Inventors: Janos Bata, Gyorgy Ando, Zsolt Katona
  • Patent number: 5141392
    Abstract: The driving shaft (3) of a pump impeller (4) is extended beyond the impeller and supports the mixer (5) at its end. In order to minimize the risk for extensive damage if the mixer should hit a solid body, the shaft (6) of the mixer is very slim and manufactured of an elastic material such as spring steel.
    Type: Grant
    Filed: February 21, 1991
    Date of Patent: August 25, 1992
    Assignee: ITT Flygt AB
    Inventor: Peter Uvemo
  • Patent number: 5078505
    Abstract: The invention relates to a method for mixing liquids into each other or different phases into liquid by employing a double loop circulation, created below the surface zone of a reactor. In order to maintain an intensive mixing, it is characteristic of this Bottom Toroidal Roll or BTR principle that the employed mixer has a strong bottom draft and presses obliquely downward, and that the mixer is installed according to the mixing method of this invention and that the flow pattern thereof is controlled in an exactly determined fashion. In our method the mixer jet hits the cylinder surface of the reactor, so that the jet is divided into two roughly equal parts by adjusting this distribution by means of a back-flow guiding member of the invention, which guiding member is located above the mixer. The rolling motion taking place in the reactor is controlled by means of specific baffles.
    Type: Grant
    Filed: July 13, 1989
    Date of Patent: January 7, 1992
    Assignee: Outokumpu Oy
    Inventors: Bror G. Nyman, Seppo S. Jounel, Launo L. Lilja, Valto J. Makitalo
  • Patent number: 4989987
    Abstract: A mixing apparatus is provided for mixing slurries, particularly high density, high viscosity fracturing fluid slurries containing a large proportion of proppant material. A mixing tub has a generally round horizontal cross-sectional shape. A relatively large, low-speed rotating agitator is utilized to mix the slurry. The design of the agitator is such that a radially inwardly rolling toroidal shaped slurry flow zone is created adjacent the upper surface of the slurry within the tub. A stream of clean fracturing fluid is introduced into the tub near the center of the toroidal shaped flow zone. Dry proppant material is introduced into the tube and carried by the radially inwardly rolling flow into contact with the clean fracturing fluid. Foraminous baffles, preferably constructed from expanded metal sheets, are radially oriented within the tub to reduce rotational motion of the slurry within the tub without causing dropout of proppant from the slurry.
    Type: Grant
    Filed: December 18, 1989
    Date of Patent: February 5, 1991
    Assignee: Halliburton Company
    Inventors: Leslie N. Berryman, Herbert J. Horinek, Max L. Phillippi, David A. Prucha, Vincent G. Reidenbach, Stanley V. Stephenson
  • Patent number: 4919540
    Abstract: A self-leveling mixer apparatus includes a base and a generally downwardly tapered movable mixing tub supported from the base in a manner such that the tub is movable between first and second positions relative to the base. A leveling valve is provided for controlling a level of fluid in the movable mixing tub. A connector linkage operably associated with the tub and the leveling valve is connected therebetween for adjusting the leveling valve in response to movement of the mixing tub relative to the base. The tub preferably has a generally oval shaped upper end and a generally circular shaped lower end and is constantly tapered therebetween. A tub orientation control linkage is provided to prevent tilting of the tub as it moves between its upper and lower positions.
    Type: Grant
    Filed: May 27, 1988
    Date of Patent: April 24, 1990
    Assignee: Halliburton Company
    Inventors: Calvin L. Stegemoeller, Gail F. Davis
  • Patent number: 4893937
    Abstract: There are disclosed apparatus and methods for mixing solids that are difficult to mix. The apparatus includes means for providing a slurry of the solid to be mixed to the inlet side of a centrifugal recirculating pump.
    Type: Grant
    Filed: June 30, 1988
    Date of Patent: January 16, 1990
    Assignee: Eastman Kodak Company
    Inventor: Ryszard Braun
  • Patent number: 4884892
    Abstract: A method and apparatus is provided to generate over a confined space precisely defined distributions of the magnitude of the wall shearing stresses in a substrate/fluid boundary layer. A fluid flow is rotated around a center axis in the confined space. Simultaneously a defined fluid volume is removed in the rotational axis of the flow per unit time and recirculated or replenished through return openings in the lid or sidewall.
    Type: Grant
    Filed: May 16, 1988
    Date of Patent: December 5, 1989
    Assignee: Hydro Data, Inc.
    Inventor: Giselher R. Gust
  • Patent number: 4883363
    Abstract: A device inter alia for uniformly distributing solid and/or liquid particles. It comprises, on the one hand, a hollow vertical primary shaft (1) driven in rotation, the bottom end of the shaft comprising a primary ring (4), the bottom surface of which bears vertical teeth (5) disposed in concentric circles, the device also comprising a hollow vertical secondary shaft (2) driven in rotation in the opposite direction to the primary shaft (1) and at its bottom end comprising a cylindrical cage (10) comprising a secondary ring (11) and a disc (12) connected to the bottom surface of the secondary ring (11) by at least three bars (13), the top surface of the disc (12) comprising vertical teeth (14) disposed concentrically and staggered with respect to the teeth (5) in the primary ring (4), and at its center the disc comprises a circular anvil (15) coaxial therewith and at least equal in diameter to the primary shaft (1).
    Type: Grant
    Filed: September 8, 1988
    Date of Patent: November 28, 1989
    Inventors: Francis D. Pillon, Michel A. Andriot-Ballet