Axial Treated Material Feed Type Patents (Class 34/141)
  • Patent number: 8959789
    Abstract: A tunnel-type rotary drum tumble dryer includes a cabinet (1) with a loading door (2) and an unloading door (3) on opposite sides, and a drum (4) arranged inside the cabinet (1) for rotating with respect to a horizontal or inclined geometric axis (E). The drum (4) has a revolution wall (5) around the axis (E), and end openings (5a, 5b) at opposite ends facing said loading and unloading doors (2, 3). The tumble dryer also includes an air circulator that includes an air inlet (8) facing one of the end openings (5a, 5b) of the drum (4) and an air outlet (9) adjacent to the other end opening (5a, 5b) of the drum (4) for creating an axial flow of drying air inside and from one end to another of the drum (4) through the clothing tumbling inside the drum (4).
    Type: Grant
    Filed: May 28, 2009
    Date of Patent: February 24, 2015
    Assignee: Girbau, S.A.
    Inventors: Ramón Sans Rovira, Daniel Arcarons Alibes, Jordi Garcia Ferrera
  • Patent number: 8869420
    Abstract: This invention presents a versatile and continuous drying technology that utilizes controlled heat combined with forced air supply for drying a feedstock. The dryer virtually divided top-down into different zones, each having definite heated air distribution rate to secure desired condition for drying of the feedstock. The heat source of the dryer is waste heat, either provided by the feedstock itself through exothermic heat generated by the feedstock or reclaimed waste heat or solar heat. The discharge system of the dryer is a fail-safe discharge system, which ensures equal residence time for the feedstock through all the zones.
    Type: Grant
    Filed: January 2, 2013
    Date of Patent: October 28, 2014
    Inventor: Mousa Mohammad Nazhad
  • Patent number: 8726532
    Abstract: Methods and systems are disclosed for drying a material or, more generally, flash evaporating a target substance having a vapor pressure threshold. The methods and systems include a conveyor conduit that receives material. The material moves through the conveyor and is expelled into a pressure drop zone created by one or more venturi nozzles. As the material encounters the pressure drop zone, the targeted substance in the material experiences a rapid and extreme pressure drop and simultaneously a rapid temperature increase. This causes the target substance in the material to flash evaporate virtually immediately. The resulting vapor is separated from the remaining material and the now dry material is collected for further processing or use. The vapor can be collected, condensed, exhausted, or otherwise treated depending upon the goals of a particular installation or process.
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: May 20, 2014
    Assignee: Flash Rockwell Technologies, LLC
    Inventor: John Hogan
  • Patent number: 6823607
    Abstract: A plant for the drying and treatment of a pourable mineral material. The plant includes a combustion apparatus, introducing smoke gases into a rotary-driven rotary drum for cocurrently with the pourable mineral material. The rotary drum is inclined in the conveying direction, has installed fittings on the inner circumference and is connected sealingly at its outlet end to a shaft. The installed fittings in a front introduction region of the drum are transport blades. The shaft is put under a vacuum by means of a fan and is set up to take over the material and gas stream emerging from the rotary drum. A Venturi fitting is arranged coaxially in the rotary drum, upstream of the outlet, and a bypass for conveying air is arranged in the drum casing in the introduction region.
    Type: Grant
    Filed: August 28, 2003
    Date of Patent: November 30, 2004
    Assignee: Enerco BV
    Inventors: Heinrich Emil Jerzembski, Jan Bot
  • Patent number: 6199299
    Abstract: In a chisel-type convergence for a chip bin in a wood chip pulping process and system, an improvement in uniformity of discharge of the chips from a chips bin or the like is provided. The bin includes a conventional hollow substantially right circular cylindrical first, upper, body portion, a second, hollow transition, portion connected to the bottom of the first portion, and a third transition portion, below the second portion and above a metering device, such as a metering screw or a star-feeder. The third transition operates less than full of chips, and provides relief from chip compaction. The third transition portion may include stationary or movable baffles, and/or a metering screw may be provided which can pivot downwardly in order to minimize or eliminate the thrusting force against the bin or upper chips to facilitate discharge.
    Type: Grant
    Filed: April 6, 1998
    Date of Patent: March 13, 2001
    Assignee: Andritz-Ahlstrom Inc.
    Inventors: J. Robert Prough, Jerry R. Johanson
  • Patent number: 6138377
    Abstract: The present invention is an apparatus and process for cooling and de-steaming hot calcined stucco used in the production of gypsum boards or bagged plaster. The apparatus is a fluid bed stucco cooler and comprises a cooler housing having a plenum with two chambers, a first chamber having a stucco inlet and a second chamber having a stucco outlet. The stucco cooler includes cooling coils that are located within the plenum and a fluidization pad positioned through the fluidization pad help to mix the air and the stucco powder to insure fluidization, prevent channeling, and prevent the stucco powder from building up on the cooling coils. The air also forces steam from the hot calcined stucco out through an air outlet located at the top of the stucco cooler, thereby de-steaming the stucco. The stucco flows through the plenum and passes over the cooling coils, thereby cooling the stucco as it reaches the stucco outlet.
    Type: Grant
    Filed: July 21, 1999
    Date of Patent: October 31, 2000
    Assignee: United States Gypsum Company
    Inventors: Michael L. Bolind, Michael J. Porter
  • Patent number: 6128828
    Abstract: A drying machine includes a hot air blower, a housing divided horizontally into plural long chambers having an open upper side, a closed bottom and two longitudinal sides bored with through holes, a screw conveyor respectively positioned in each long chamber, and a motor to rotate all the screw conveyors, and a sending-out screw conveyor positioned on the bottom of the housing. Each screw conveyor has an inner screw and an outer screw twisting in opposite direction for conveying, squeezing, mixing and stirring material at the same time dried by hot air coming from the blower. Material falls down from a funnel on the upper side of the housing and gradually falling down through the through holes and an outlet in an end of the bottom of the highest long chamber and then into a second highest long chamber and so on to the lowest portion of the housing to be conveyed by the sending-out screw conveyor to an exit through which dried material falls down through for collected.
    Type: Grant
    Filed: July 27, 1999
    Date of Patent: October 10, 2000
    Inventor: Chao-Chun Wang
  • Patent number: 6061925
    Abstract: An object of the invention is to provide a rotary type heat treatment device wherein, when a material to be sintered is continuously and stably sintered in a container, the material in the container is stably detected for a long period of time, and a temperature control method for the device. In order to perform temperature control with high accuracy, the inside of a container 6 is divided with screws 18 into temperatures control regions (1) through (6). Heat-resisting protective tubes 20, which are provided on the inner cylindrical wall of the container in such a manner that they are juxtaposed, and complementary thermocouples, are extended to the respective temperature control regions and are bent laterally. The temperature detecting sections 25 of the thermocouples that are led out of the protective pipes 20 are covered with heat-resisting material, and transmit electrical signals outside through a current collecting section consisting of a slip ring and brushes.
    Type: Grant
    Filed: August 17, 1998
    Date of Patent: May 16, 2000
    Assignee: Japan Energy Corporation
    Inventors: Takuya Amano, Akira Kondo, Ken Takizawa
  • Patent number: 6052917
    Abstract: A vacuum rotary dryer capable of charging solids into a rotary drum and discharging the solids from the rotary drum without any manual operation contacting solids with the hands is provided. A rotary drum (23) is mounted thereon with a gas flow pipe (46) and a solids feed and discharge pipe (56). The solids feed and discharge pipe (56) is connected to a feed source of the solids and a pressure reducing unit (53) reduces a pressure in the rotary drum through the gas flow pipe (46), to thereby feed solids to be dried to the rotary drum (23). After drying of solids in the drum, the solids feed and discharge pipe (56) is connected to a solids suction and transport structure and the gas flow pipe (46) is rendered open to an atmospheric pressure. A swing section (56b) of the solids feed and discharge pipe (56) is pivotally moved, to thereby be intruded into solids while keeping the rotary drum (23) inclined, resulting in solids being removed through a distal end of the swing section by suction.
    Type: Grant
    Filed: August 10, 1998
    Date of Patent: April 25, 2000
    Assignee: Matsumoto Machine Mfg. Co., Ltd.
    Inventor: Takashi Matsumoto
  • Patent number: 5522158
    Abstract: A dryer drum coater has an internal recirculation cylinder for promoting the recirculation of combustion products so as to entrain and incinerate blue smoke formed when heated and dried virgin aggregate is mixed with other asphaltic products such as RAP and/or liquid asphalt in the dryer drum coater. The recirculation cylinder acts to extend and strengthen natural eddy currents formed during operation of the coater such that combustion product recirculation which would normally extend only in the end area of the flame extends far enough toward the base of the flame to entrain the blue smoke and to draw the blue smoke into the base area of the flame. The cylinder may comprise a refractory lined stainless steel shell or may be formed from tee flights of the type used in the combustion zones of dryer drum coaters.
    Type: Grant
    Filed: March 7, 1994
    Date of Patent: June 4, 1996
    Assignee: Astec Industries, Inc.
    Inventor: Malcolm L. Swanson
  • Patent number: 5283961
    Abstract: An apparatus for collecting foreign materials such as rocks and tramp iron from material fed to a rotary dryer, wherein the material is dropped into the dryer at an intake end for tumbling within the dryer in a stream of drying gas flowing axially through the dryer. A trough is positioned spaced downwardly and beneath the intake for catching the heavy foreign materials dropping downwardly, and the foreign materials are carried outwardly by a screw auger driven by the dryer.
    Type: Grant
    Filed: April 6, 1992
    Date of Patent: February 8, 1994
    Assignee: Beloit Technologies, Inc.
    Inventor: Richard J. Gobel
  • Patent number: 4753019
    Abstract: An apparatus for drying and heating lime sludge in a rotary kiln by means of regenerative heat transfer. The apparatus is preferably formed of round or rounded rods which extend parallel to the longitudinal axis. The rods are disposed in the kiln in an annular region adjacent the housing wall so that lime sludge flows freely between the rods while the kiln is rotating.
    Type: Grant
    Filed: December 30, 1986
    Date of Patent: June 28, 1988
    Assignee: A. Ahlstrom Corporation
    Inventor: Osmo Holopainen
  • Patent number: 4742622
    Abstract: An improved flighting for dryers is the subject of the present invention. An elongated drying drum is disposed for rotation about its longitudinal axis. The inner surface of the drum is provided with a plurality of material distributing vanes in circumferentially spaced relationship. The vanes are characterized by first surface extending generally transverse to a tangent to set body at the point of attachment and a second wedge-shaped surface intersecting the first surface. The wedge-shaped surface may also be provided with a lip extending circumferentially therefrom. A plurality of interference structures are disposed from a central longitudinal support and provide means for distributing material gravitating from the outer peripheral vanes. A plurality of return flighting members are disposed along the inner surface of the drum between the afore described material distributing vanes. These flighting members are disposed at an angle and conform generally to the curvature of the inner surface.
    Type: Grant
    Filed: August 26, 1986
    Date of Patent: May 10, 1988
    Inventor: Stanley P. Thompson
  • Patent number: 4730400
    Abstract: Drum reactor (10) for aerobic fermentation has a frame (12) with which a height adjusting device (14). The drum reactor is provided with a rotary drum (11) having air pipes (20) extending longitudinally along its outer shell. The air pipes (20) are subject to compressed air and humidity by the action of a distributor slide valve (25) so that the air pipe (37) which is free of fermenting material (26) is inactive. Associated with the air pipes (20) are a plurality of jets (21) which lead into the drum interior (27) where they are at least partially covered by baffles (22). By their plough-like disposition, the baffles ensure circulation and onwards conveyance of the material to be fermented. Provided on the drum bottom (38) is a discharge orifice (33) which can be closed by a plough flap (36). For delivery of fermented material, the plough flap can be spread open into the drum interior.
    Type: Grant
    Filed: December 9, 1985
    Date of Patent: March 15, 1988
    Inventor: Gunter Johannsen
  • Patent number: 4649655
    Abstract: Apparatus for dehydrating slurries such as water based drilling fluids heavily laden with drill cuttings and other earth solids comprising a rotating drum which is heated by combustion of a fuel air mixture to generate relatively large quantities of combustion products for heating in an enclosed chamber defined by said drum. The slurry to be dehydrated is injected into the interior of the drum or against the outer sidewall thereof for rapid exposure and substantially flash evaporation of the slurry liquids. An outer housing may be constructed around the drum and in one embodiment the drum is arranged inclined to the horizontal with the slurry introduced into the interior of the drum and the combustion chamber formed between the outer housing and the drum. In another embodiment the combustion chamber is formed on the interior of the drum and the evaporation chamber is formed between the drum and the outer housing.
    Type: Grant
    Filed: February 13, 1986
    Date of Patent: March 17, 1987
    Assignee: Atlantic Richfield Company
    Inventor: Eric B. Witten
  • Patent number: 4628614
    Abstract: An improved flighting for dryers is the subject of the present invention. An elongated drying drum is disposed for rotation about its longitudinal axis. The inner surface of the drum is provided with a plurality of material distributing vanes in circumferentially spaced relationship. The vanes are characterized by first surface extending generally transverse to a tangent to set body at the point of attachment and a second wedge-shaped surface intersecting the first surface. The wedge-shaped surface may also be provided with a lip extending circumferentially therefrom. A plurality of interference structures are disposed from a central longitudinal support and provide means for distributing material gravitating from the outer peripheral vanes. A plurality of return flighting members are disposed along the inner surface of the drum between the afore described material distributing vanes. These flighting members are disposed at an angle and conform generally to the curvature of the inner surface.
    Type: Grant
    Filed: July 17, 1985
    Date of Patent: December 16, 1986
    Inventor: Stanley P. Thompson
  • Patent number: 4606283
    Abstract: A system wherein the contaminated cuttings are fed into the system for eventual incineration. The principal apparatus of the system comprises a plurality, preferably three, of horizontally disposed cylindrical drying chambers mounted onto a skid for receiving contaminated cuttings into each separate chamber. There is provided on the first end of the chambers a receiving bin or hopper, wherein the cuttings are received from the shakers or the like into the bin, and dropped into an opening in the first end of the three chambers. Each chamber is provided with a separate variable motor controlled auger disposed substantially throughout the length of the chamber wherein rotation of the auger would move the cuttings along the length of the interior of the chamber. The second end of each chamber is provided with a lower exit chute for removal of the cuttings from the chamber as the auger has moved them into position. The cuttings would then be collected in a polyurethane bag or the like.
    Type: Grant
    Filed: March 13, 1985
    Date of Patent: August 19, 1986
    Inventors: Farrell P. DesOrmeaux, Thomas F. DesOrmeaux, Mark R. DesOrmeaux
  • Patent number: 4507876
    Abstract: Apparatus for preventing the escape of volatile treating agents into ambient air from a rotary treating drum used in treatment of particulate solids such as tobacco is disclosed. The apparatus comprises a flange on each end of the drum against which a washer is urged while a gas, such as air, is introduced between each flange and its associated washer ring.
    Type: Grant
    Filed: May 23, 1983
    Date of Patent: April 2, 1985
    Assignee: R. J. Reynolds Tobacco Company
    Inventor: Lucas J. Conrad
  • Patent number: 4477984
    Abstract: A multi purpose three pass drum dryer comprised of two independent and intermeshed systems utilizing an air circulation flowing contrary to the progression of the material through the dryer.
    Type: Grant
    Filed: October 30, 1980
    Date of Patent: October 23, 1984
    Assignee: Wilfred O. Schmidt
    Inventor: Harvey Wenger
  • Patent number: 4393603
    Abstract: The thermal efficiency of a dryer is improved by affixing to the shell of the dryer that contains the material to be dried projections which contact a heating medium surrounding the shell of the dryer and protrude into the interior of the shell. Heat is transferred from the heating medium by the projections to the material to be dried that is inside the shell of the dryer.
    Type: Grant
    Filed: June 29, 1981
    Date of Patent: July 19, 1983
    Assignee: Phillips Petroleum Company
    Inventor: John R. Casperson
  • Patent number: 4053365
    Abstract: A modified rotary kiln suitable for calcining normally solid carbonaceous material, having adapted thereto at one end a firing crown and means for admitting combustible gases or liquids and air; a feeding means for such solid carbonaceous material to be calcined adapted to the other end of the kiln; and wherein the combustion gases and solid materials travel countercurrently in the kiln during calcination, wherein: at least one series of at least two tuyeres passes through the wall of the kiln symmetrically spaced to and at about a point longitudinally in the middle one-half of the longitudinal axis of the kiln; each tuyere terminating within the kiln through a nozzle on the side of the tuyere at a height sufficient for the discharge of exterior oxidizing gases passing therethrough at a point above the bed of the carbonaceous material in the kiln, directing the exterior oxidizing gases toward the feed end at about the same acute angular direction from a line passing through the nozzle and parallel to the long
    Type: Grant
    Filed: December 2, 1975
    Date of Patent: October 11, 1977
    Assignee: Great Lakes Carbon Corporation
    Inventor: Franklin H. Welter