Endless Conveyer Patents (Class 100/118)
  • Patent number: 10766219
    Abstract: A pressing device having an endless conveyor which includes conveying elements connected to each other to form and endlessly revolving track. Adjacent conveying elements are pivotally connected together via pins forming pivot axes. A press roller is provided in a pressing zone to apply pressure to the material to be pressed, which is conveyed on the endless conveyor. Adjacent conveying elements of the endless conveyor have intermeshing fingers, and the pin connecting the conveying elements penetrates these fingers, such that in the pressing zone the conveying elements assume a pivot position with respect to each other in which the outer side of the endless conveyor forms a closed, plate-like surface without protrusions of recesses. The pressing zone follows a break open zone in the circumferential direction of the endless conveyor, and in the break open zone the endless conveyor is deflected such that the outer side thereof is concavely bent.
    Type: Grant
    Filed: November 27, 2014
    Date of Patent: September 8, 2020
    Inventor: Johannes Bohnert
  • Patent number: 10072214
    Abstract: A process for the preparation of a concentrated filter cake from an admixture of partially-decomposed organic material and a polar liquid using a filter press without the input of thermal heat or superheated steam or other pressurized gas or liquid is provided by this invention. The admixture is mixed with an additional amount of the polar liquid to produce a feed slurry of the admixture having a moisture content of about 90-99% wt. The resulting slurry admixture is then introduced into the filter press having a plurality of filter plates with porous membranes secured along their outlet. The pressure condition introduced inside the filter plate chambers is increased by a pressurized gas or liquid to force the polar liquid from the admixture slurry though apertures contained in the membrane, thereby leaving a filter cake of the partially-decomposed organic material having a moisture content that is lower than the moisture content of the initial partially-decomposed organic material feed.
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: September 11, 2018
    Assignee: American Peat Technology, LLC
    Inventors: Douglas A. Green, Gabriel A. Browning, David L. Schaeffer
  • Patent number: 9885153
    Abstract: Disclosed is a device for forming an extended nip between a counter roll and a shoe roll for machining a material web, wherein the shoe roll has a support and a flexible roll shell, which can rotate around the support (4) and which rests in the region of the extended nip upon a head surface of a press shoe guided on the support, and the press shoe displaceably rests on the support in order to generate a press pressure via a pressure chamber to which fluid can be applied, the pressure chamber is disposed as a pressure pad, on which the press shoe rests surficially on the rear side, wherein the pressure pad is inserted into a groove-like chamber, wherein the press shoe has a stamp-like section on the rear side, which stamp-like section descends into an invaginable pressure pad in order to perform reciprocating movements, and the pressure pad is guidedly supported on the groove-like chamber along a pressure pad lateral wall that forms a roll wall.
    Type: Grant
    Filed: May 27, 2014
    Date of Patent: February 6, 2018
    Assignee: Andritz Küsters GmbH
    Inventors: Robert Meitner, David Lange, Andreas Anzel, Wilhelm Mausser
  • Patent number: 9598818
    Abstract: Apparatus for washing and/or dewatering cellulose pulp is disclosed including a movable permeable surface in a pulp transportation chamber having a chamber gap above the movable permeable surface, a pulp distributor for distributing pulp onto the movable permeable surface, a throttle having a throttle gap width and an adjustable throttle adjuster to remotely adjust the throttle gap width so that a volume of pulp flow into the pulp distributor is equal to or greater than the volume of pulp flow out of the distributor during operation.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: March 21, 2017
    Assignee: Valmet AB
    Inventors: Tobias Lööf, Patrik Pettersson, Jonas Orgård, Hans Lövgren, Per Wallin, Peter Nykvist, Jonas Magnusson
  • Patent number: 9419269
    Abstract: According to one embodiment, a press apparatus for an electrode, includes, a press unit configured to compress an electrode sheet includes a first region formed with an electrode layer on a surface thereof and a second region on which the electrode layer is not formed, and a stretching unit includes a stretching member, which comprises a projecting surface located opposite the electrode sheet and projecting toward the electrode sheet, in a position corresponding to the second region, a retracted surface retracted from the electrode sheet relative to the projecting surface, in a position corresponding to the first region, and a relief surface retracted away from the electrode sheet, in a position corresponding to an edge portion of the electrode sheet.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: August 16, 2016
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Ikuo Uematsu, Masaomi Nakahata
  • Patent number: 9292995
    Abstract: A refrigerated automatic distributor (51) for juices extracted from fresh fruits (53) comprising a fruit or vegetable stocking store (52), a juice extraction device (54) for extracting juice from fruits or vegetables, a fruit moving mechanism for moving the fruits or vegetables between the stocking store and the extraction device, a mouth (26) of access to a container (33) for the juice and an electronic control unit (31). The distributor (51) further comprises a sealing device (41) for sealing the container (33) with the juice extracted and to be dispensed and in which the electronic control unit (31) is provided for activating the sealing device (41) on request of the user.
    Type: Grant
    Filed: July 9, 2011
    Date of Patent: March 22, 2016
    Assignee: A.A.T. AGROINDUSTRY ADVANCED TECHNOLOGIES S.P.A.
    Inventors: Salvatore Torrisi, Mario Venticinque
  • Patent number: 8871099
    Abstract: A coal slurry dewatering arrangement includes a filter belt press with a filter belt having first and second sides, the first side being water-impermeable and the second side having pores and being water-permeable, wherein the water-permeable side includes a layer of water-absorbent material.
    Type: Grant
    Filed: October 8, 2012
    Date of Patent: October 28, 2014
    Assignee: Nu-Coal LLC
    Inventors: Fred H. Green, Raymond A Miller
  • Publication number: 20130269546
    Abstract: An apparatus for processing and compressing pulp, includes a circular perforated sieve base disc and at least one roll wheel circulating and rotating on the sieve base disc, where the sieve base disc and the at least one roll wheel rotating on the sieve base disc are shaped as bevel gears and make up a bevel gear assembly, by which the rotating force can be introduced in the gears of the bevel gear assembly to be partly converted to a compressive force for compressing the pulp to be processed through perforations in the bevel gear like sieve base disc.
    Type: Application
    Filed: December 15, 2011
    Publication date: October 17, 2013
    Inventors: Eino Sivonen, Kyösti Valta
  • Patent number: 8544383
    Abstract: A liquid separating device (1) for processing a mixture material (3) containing both solid and liquid materials (3a,3b), in order to separate liquid material (3b) from the solid material (3a), the liquid separating device (1) includes a support frame (5), a series of liquid separation assemblies (7a,7b) and a corresponding guiding assembly (19) between each pair of liquid separation assemblies (7). The liquid separation assemblies (7) are disposed about the support frame (5) in a cascading configuration, and the passage (13) of each liquid separation assembly (7) is narrower in width than the passage of a preceding liquid separation assembly (7) so that each subsequent liquid separation assembly (7b) is enabled to extract more liquid material via an increased wringing pressure resulting from a thickening of the remaining mixture material (3) to be processed and the narrower subsequent passage (13b) through which it is channeled and pressed.
    Type: Grant
    Filed: September 14, 2010
    Date of Patent: October 1, 2013
    Assignee: GEA Farm Technologies Canada Inc.
    Inventors: Alain Courtemanche, Yann Desrochers, Jerome Brisson, Stephane St-Onge
  • Patent number: 7964105
    Abstract: A method for increasing the removal of a higher fraction of liquid from the press cake in any belt press is described. Specifically, the invention incorporates a series of rollers that create multiple pinch points to compress the solid fraction while removing liquid. After each pinch point, the solid material is allowed to separate from the belt, fall by gravity, and repack so that more liquid can be released at each successive pinch point than is possible if the material is fed to multiple rollers and pinch points in series without decompressing as is done is prior art.
    Type: Grant
    Filed: August 7, 2008
    Date of Patent: June 21, 2011
    Inventor: William Harris Moss
  • Patent number: 7918160
    Abstract: The cane juice extractor includes a wagon that may be hitched to or towed alongside a harvesting machine or combine for application in-field. The wagon includes a frame having an upper deck and a lower deck. The upper deck includes an inlet side where harvested cane may be fed for juice extraction and an outlet side for disposing the pulp. Rotating feeders feed the cane to a cutting station on the upper deck. The cutting station comminutes the cane into billets that are carried by an endless belt through a series of compression roller sets. Each set of rollers compress the cut cane down to smaller dimensions to extract the juice. A chute disposed between the upper and lower decks collects the juices and funnels them into a juice storage tank on the lower deck. The pulp is expelled from the outlet side to the field.
    Type: Grant
    Filed: June 4, 2009
    Date of Patent: April 5, 2011
    Inventor: J. Edwin Roy
  • Patent number: 7794568
    Abstract: Methods for dewatering a fiber suspension in a twin-wire press, having a lower wire and an upper wire, and a first and a second dewatering table, which supports the wires such that a dewatering space is defined by the wires, are disclosed. The wires transport the fiber suspension under compression of the wires by the dewatering tables, such that the fiber suspension is dewatered and forms a fiber web between the wires. A separate pressing force is applied against one of the wires, such that this wire presses the formed fiber web via the second wire against one of the dewatering tables and further dewaters the fiber web. The separate pressing force is adjusted such that a desired dryness of the fiber web leaving the dewatering tables is achieved. A twin-wire press is also disclosed.
    Type: Grant
    Filed: October 19, 2005
    Date of Patent: September 14, 2010
    Assignee: Metso Paper, Inc.
    Inventor: Leif Odmark
  • Patent number: 7722744
    Abstract: The invention relates to a device (12) which is used to press a pressure shoe (10) against a counter surface, comprising at least one at least partially flexible pressure body (16) which is supported on the bearing body (14), said pressure body comprising at least one cavity (18) which can be impinged upon by pressure fluid in order to produce a predetermined pressing force over a corresponding pressure body volume.
    Type: Grant
    Filed: October 26, 2004
    Date of Patent: May 25, 2010
    Assignee: Voith Paper Patent GmbH
    Inventors: Jens Mueller, Ewald G. Welp, Andreas Schuette, Dimitrios Giannoulis, Ralf Pfifferling, Wolfgang Meyer-Grevendick
  • Publication number: 20100032384
    Abstract: A method for increasing the removal of a higher fraction of liquid from the press cake in any belt press is described. Specifically, the invention incorporates a series of rollers that create multiple pinch points to compress the solid fraction while removing liquid. After each pinch point, the solid material is allowed to separate from the belt, fall by gravity, and repack so that more liquid can be released at each successive pinch point than is possible if the material is fed to multiple rollers and pinch points in series without decompressing as is done is prior art.
    Type: Application
    Filed: August 7, 2008
    Publication date: February 11, 2010
    Inventor: William Harris Moss
  • Patent number: 7622023
    Abstract: Twin-wire presses for dewatering fiber suspensions are disclosed including upper and lower rolls and endless upper and lower wires running around the rolls, a pair of dewatering tables supporting the upper and lower wires and forming a dewatering space between them for initial pressing and dewatering of the fiber suspension, to form a fiber web between the wires, a roll engagement downstream of the watering tables, a final dewatering in a press frame, a press and lift arrangement for vertically adjusting the first dewatering table and a link system joined to the press frame and to an upper section of the first dewatering table which is movable from and against the second dewatering table by means of the press and lift arrangement thereby.
    Type: Grant
    Filed: March 17, 2005
    Date of Patent: November 24, 2009
    Assignee: Metso Paper, Inc.
    Inventor: Hans Lövgren
  • Patent number: 7510631
    Abstract: System for drying a tissue or hygiene web. The system includes a permeable structured fabric carrying the web over a drying apparatus. A permeable dewatering fabric contacts the web and is guided over the drying apparatus. A mechanism is utilized for applying pressure to the permeable structured fabric, the web, and the permeable dewatering fabric at the drying apparatus. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.
    Type: Grant
    Filed: July 27, 2005
    Date of Patent: March 31, 2009
    Assignee: Voith Patent GmbH
    Inventors: Thomas Thoroee Scherb, Jeffrey Herman, Luiz Carlos Silva, Hubert Walkenhaus
  • Patent number: 7381329
    Abstract: A belt press solid/liquid separation apparatus is provided for separating organic mixtures with substantial amounts of moisture to produce separated solids with solids content of 50-90% while retaining 99% of the incoming solids in the filter cake. Specifically, the invention incorporates a double-belt press apparatus with a non-permeable upper belt, a highly permeable lower belt, a wedge type zone with adjustable spring compression, and a means for re-screening belt press filtrate with either a single belt press or multiple belt presses configured as a multi-step cascade of belt presses.
    Type: Grant
    Filed: November 7, 2006
    Date of Patent: June 3, 2008
    Inventor: William Harris Moss
  • Patent number: 7252739
    Abstract: The method is for distributing cellulose pulp that has a 2-12% consistency. A manifoid housing is in fluid communication with distributor housing. The distributor housing has holes that are distributed along a generatrix of the distribution housing. The cellulose pulp is fed into an inlet of the manifold housing. The feed screw is rotated to convey the cellulose pulp in the transverse direction through the distributor housing. The feed screw sweeps across the holes in the distributor housing to urge the cellulose pulp through the holes. The cellulose pulp is uniformly fed through the holes and then through an inlet to dewatering drums. The cellulose pulp is run between the dewatering drums and a trough to form a pulp web. The pulp web is dewatered in a press nip formed between the dewatering drums. The dewatered pulp web is collected by a feed screw.
    Type: Grant
    Filed: November 18, 2004
    Date of Patent: August 7, 2007
    Assignee: GL&V Management Hungary Kft.
    Inventors: Goran Brottgardh, Axel Lamas, Bo Clarstrom
  • Patent number: 7153392
    Abstract: A shoe roll of a shoe press for use in a papermaking machine, the shoe roll including a blanket, or endless belt, which houses a shoe assembly that, in cooperation with an external backing roll, forms an extended nip proper. The shoe press includes an oil circulation piping system for removing the oil from the interior of the shoe roll and transferring the oil to an oil trap during the running of the machine, whereby the piping system also includes a suction fan connected thereto. The device is implemented by way of connecting an oil siphon to the oil circulation piping system, the oil siphon adapted to move towards and away from the blanket in the interior of the shoe roll so that, when the roll is stopped, the siphon removes the excess oil from the interior of the blanket by a pressure differential generated by of the suction fan.
    Type: Grant
    Filed: October 16, 2002
    Date of Patent: December 26, 2006
    Assignee: Vaahto Oy
    Inventor: Erkki Aho
  • Patent number: 7132037
    Abstract: Apparatus for forming an extended nip between a mating roll and a shoe roll for treating a product web, the shoe roll having a stationary carrier and a flexible roll shell which can rotate around the carrier and which, in the region of the extended nip, is supported on a hydrodynamically lubricated running surface of a press shoe guided on the carrier, for which purpose a device for applying lubricant to the inner side of the roll shell is provided, where, in an inlet region, the press shoe has a plurality of holes which are arranged transversely with respect to the machine running direction, are connected to a lubricant supply in order to be fed with lubricant and, for this purpose, end at the running surface, and the holes comprise restrictors whose resistance is designed for a pressure drop of 5 to 15 bar.
    Type: Grant
    Filed: December 16, 2003
    Date of Patent: November 7, 2006
    Assignee: Eduard Kusters Maschinenfabrik GmbH & Co. KG
    Inventors: Bernhard Brendel, Peter Hader
  • Patent number: 7051882
    Abstract: A twin-wire belt press is disclosed for dewatering a fiber suspension and forming a continuous web of the fiber suspension. The twin wire belt includes a plurality of upper and lower rolls, a perforated roll and endless upper and lower wire belts. Dewatering tables are used to support the endless upper and lower wire belts and form a wedge-shaped pressure space between the endless upper and lower wire belts for initially pressing and dewatering the fiber suspension and forming a web therebetween. Roll members, including at least two press rolls which form press roll nips with the perforated roll and another roll, press and dewater the web between the endless upper and lower wire belts.
    Type: Grant
    Filed: July 26, 2001
    Date of Patent: May 30, 2006
    Assignee: Metso Paper, Inc.
    Inventors: Leif Ödmark, Göran Olsson, Mats Ullmar
  • Patent number: 6932888
    Abstract: A flexible press cover which has an additional strengthening element in at least one of its two end regions. As a result, in the end region, the tensile strength and the tensile rigidity in the circumferential direction are increased with respect to that hitherto known in such a way that it is no longer necessary to clamp the press cover end region in between two components. Instead, the press cover according to the present invention is suitable to be fixed to the outer circumferential surface of a rotatable supporting element belonging to the cover carrying disk without the aid of an outer ring, a clamping band, clamping filament or the like. In the most beneficial case, the arrangement for fixing the press cover to the aforementioned supporting element is completely free of any kind of fixing elements which would be associated with the cover outer surface.
    Type: Grant
    Filed: February 5, 2004
    Date of Patent: August 23, 2005
    Assignee: Voith Paper Patent GmbH
    Inventors: Uwe Matuschczyk, Andreas Meschenmoser, Joachim Grabscheid, Andreas Schütte
  • Patent number: 6926805
    Abstract: The press device for a paper web, such as a calendar, contains a flexible moving element (1a) forming an endless structure, said element forming the shell (1) of a roll, the press device including further a counter roll. Inside the moving element (1a) there is a shoe element (3) that is arranged to support the shell (1a) against the counter roll to form a nip (N). The width and/or the surface contour of the supporting surface of the shoe element (3) guiding the shell of the roll in the nip contact varies in the machine direction and the shoe element is positionable in the machine direction to adjust the nip width and/or length.
    Type: Grant
    Filed: January 4, 2001
    Date of Patent: August 9, 2005
    Assignee: Metso Paper, Inc.
    Inventor: Mika Viljanmaa
  • Patent number: 6835286
    Abstract: A press roll belt is arranged to be used in connection with a roll (10) forming a press nip. The belt (12) of the press roll (10) is provided with a groove pattern formed of intersecting grooves (11A, 11B). A press concept has at least one press nip formed between two rolls (30, 32) to remove water from a web. At least one press nip (NA) of the press concept is formed such that the cover (22) or the belt (12) of at least one roll (30A, 32A) forming the press nip is provided with groove patterning formed of intersecting grooves (11A, 11B; 21A, 21B).
    Type: Grant
    Filed: April 5, 2002
    Date of Patent: December 28, 2004
    Assignee: Metso Paper, Inc.
    Inventors: Petter Honkalampi, Heikki Kaasalainen, Nils Söderholm
  • Patent number: 6682632
    Abstract: The invention relates to a roll for a paper or board machine comprising axle journals on whose support the roll is arranged to revolve, end flanges with which the axle journals are connected, and a mantle which is connected with the end flanges. The mantle is provided with a number of openings extending through the mantle and/or recesses formed into the outer surface of the mantle, which openings and/or recesses form a regular pattern. Solid connecting portions in the outer surface of the mantle around said openings and/or recesses are opened so that, from each opening and/or recess, there is a connection, provided in the form of a groove or an additional recess extending into the outer surface of the roll mantle, with at least each of the openings and/or recesses adjacent to it.
    Type: Grant
    Filed: June 10, 2002
    Date of Patent: January 27, 2004
    Assignee: Metso Paper, Inc.
    Inventors: Osmo Nikulainen, Heikki Karttunen, Antti Leinonen, Seppo Kiviranta, Hannu Villgrén, Miikka Kettunen, Samppa Salminen, Mika Viertola
  • Patent number: 6561361
    Abstract: A belt filter press for deliquifying a material comprises two endless filter belts disposed adjacent each other so that a portion of the belts travel together and converge towards one another in a curved wedge section through which a material is progressively compressed, wherein the concavity of the wedge section is oriented toward gravity.
    Type: Grant
    Filed: February 11, 2002
    Date of Patent: May 13, 2003
    Assignee: Sebright Products, Inc.
    Inventors: Brent H. Sebright, Stuart Sebright, Joseph W. Dendel, Benjamin W. Dietz
  • Publication number: 20030085014
    Abstract: A process for increasing the tactile properties of a base web without adversely affecting the strength of the web is disclosed. In general, the process includes the steps of placing a base web in between a first moving conveyor and a second moving conveyor. The conveyors are then wrapped around a shear inducing roll which creates shear forces that act upon the base web. The shear inducing roll typically has a relatively small diameter. In some applications, more than one shear inducing roll may be incorporated into the system. In other applications, the shear inducing roll can also be a nip roll for decreasing the caliper of the base web. The shear inducing roll may be stationary, as in the form of a stationary shoe with a convex edge, or may rotate. In one embodiment, the shear inducing roll can rotate on an air bearing.
    Type: Application
    Filed: November 5, 2001
    Publication date: May 8, 2003
    Applicant: Kimberly-Clark Worldwide, Inc.
    Inventors: Frank S. Hada, Keith D. Glass, Ronald F. Gropp, Patricia Riedl, Douglas C. Thomas
  • Patent number: 6543623
    Abstract: A belt filter press for deliquifying a material comprises two endless filter belts disposed adjacent each other so that a portion of the belts travel together and converge towards one another and between which a material is progressively compressed, and a substantially cylindrically-shaped primary roller around which the belts are compressed having a longitudinal axis and ends, wherein the primary roller is provided with a plurality of radially extending fins, each of which has a wing at the free end thereof.
    Type: Grant
    Filed: February 11, 2002
    Date of Patent: April 8, 2003
    Assignee: Sebright Products, Inc.
    Inventors: Brent H. Sebright, Stuart Sebright, Joseph W. Dendel, Benjamin W. Dietz
  • Patent number: 6521094
    Abstract: Device for the washing and dewatering a fibrous suspension, which device incorporates two hollow, circular cylindrical filter drums (1), which filter drums incorporate evacuation chambers inside the filter drums for evacuation of fluid. The filter drums rotate in opposite directions to create a pinch (2) where at least one of the said filter drums (1) is installed in a trough (7,8) which partly encloses the outer surface (3) of the filter drum and which, in the direction of rotation of the filter drum, converges towards the outer surface of the filter drum. At least one pulp inflow chamber (4) is installed at the highest point (1) of one or both of the filter drums each equipped with a trough for the introduction of pulp between the outer surfaces (3) of the filter drum and its trough (7,8) for the formation of a fibrous web.
    Type: Grant
    Filed: September 7, 2001
    Date of Patent: February 18, 2003
    Assignee: Kvaerner Pulping AB
    Inventors: Axel Lamas, Stefan Hansson, Bo Clarstrom, Jesper Karrhammar, Goran Brottgardh
  • Patent number: 6454102
    Abstract: A belt press having a frame with a first belt and a second belt rotatably mounted on the frame. A curved inlet guide is movably carried on the frame. The inlet guide has a decreasing radius of curvature from an inlet end to an exit end. A positioning assembly is mounted on the frame and is attached to the inlet end of the inlet guide to raise and lower the inlet end of the inlet guide.
    Type: Grant
    Filed: March 28, 2001
    Date of Patent: September 24, 2002
    Assignee: Ashbrook Corporation
    Inventor: James E. Thompson
  • Patent number: 6402894
    Abstract: Arrangement 1 for washing and dewatering a fiber pulp suspension, which arrangement comprises two hollow, circular-cylindrical screen members 2a, 2b delimited by envelope surface and end walls. The screen members rotate towards each other to form a nip 10, at least one of the said screen members 2a, 2b being arranged in a vat 6 which partially encloses the envelope of the screen member and which, in the direction of rotation of the screen member, converges towards the envelope of the screen member. The invention relates to a sealing arrangement 8 at the end wall of the screen member. By retracting the seal a distance X from the envelope surface of the screen member in a limited area &agr; near the nip 10, the seal is relieved of the very high hydraulic and mechanical pressures which occur in the nip. Wear between the end wall of the drum and the seal at the press nip is reduced. A simple pressurized seal can thus be used with the same low pressure applied along the entire circumference.
    Type: Grant
    Filed: August 9, 2000
    Date of Patent: June 11, 2002
    Assignee: Kvaarner Pulping AB
    Inventors: Axel Lamas, Goran Brottgardh, Johan Eriksson
  • Patent number: 6402896
    Abstract: The invention relates to a roll for a paper or board machine comprising axle journals on whose support the roll is arranged to revolve, end flanges with which the axle journals are connected, and a mantle which is connected with the end flanges. The mantle is provided with a number of openings extending through the mantle and/or recesses formed into the outer surface of the mantle, which openings and/or recesses form a regular pattern. Solid connecting portions in the outer surface of the mantle around said openings and/or recesses are opened to that, from each opening and/or recess, there is a connection, provided in the form of a groove or an additional recess extending into the outer surface of the mantle, with at least each of the openings and/or recesses adjacent to it.
    Type: Grant
    Filed: June 9, 2000
    Date of Patent: June 11, 2002
    Assignee: Metso Paper, Inc.
    Inventors: Osmo Nikulainen, Heikki Karttunen, Antti Leinonen, Seppo Kiviranta, Hannu Villgrén, Miikka Kettunen, Samppa Salminen
  • Patent number: 6368463
    Abstract: An arrangement for adjusting the width of a fibre web in an apparatus comprising two filter wires permeable to water, the filter wires having the same direction of travel, and a conduit for placing pulp suspension between the wires. The arrangement comprises channel for feeding water between the wires and to the edges thereof.
    Type: Grant
    Filed: August 23, 2001
    Date of Patent: April 9, 2002
    Assignee: Metso Paper Inc.
    Inventor: Vesa Juutinen
  • Publication number: 20010035103
    Abstract: Pressing arrangement of a machine and process for producing a web. The pressing arrangement includes a shoe press unit and an opposing roll arranged to form at least one press nip. The shoe press unit includes at least one press shoe arranged opposite the opposing roll and a flexible, liquid-impermeable press belt arranged to be guided over the press shoe. The opposing roll includes a smooth surface. At least one press felt is arranged to be guided through the press nip along with the press belt and the web. The at least one felt is deflected away from the web, which is picked up by the smooth surface of the opposing roll, such that the at least one felt is guided out of the press nip at an angle greater than or equal to about 10° to a tangent to the opposing roll at an end of the press nip.
    Type: Application
    Filed: December 22, 2000
    Publication date: November 1, 2001
    Applicant: Voith Paper Patent GmbH
    Inventors: Thomas Thoroe Scherb, Harald Schmidt-Hebbel
  • Patent number: 6306259
    Abstract: Device for the washing and dewatering a fibrous suspension, which device incorporates two hollow, circular cylindrical filter drums (1), which filter drums incorporate evacuation chambers inside the-filter drums for evacuation of fluid. The filter drums rotate in opposite directions to create a pinch (2) where at least one of the said filter drums (1) is installed in a trough (7,8) which partly encloses the outer surface (3) of the filter drum and which, in the direction of rotation of the filter drum, converges towards the outer surface of the filter drum. At least one pulp inflow chamber (4) is installed at the highest point (1) of one or both of the filter drums each equipped with a trough for the introduction of pulp between the outer surfaces (3) of the filter drum and its trough (7,8) for the formation of a fibrous web.
    Type: Grant
    Filed: January 20, 2000
    Date of Patent: October 23, 2001
    Assignee: Kvaerner Pulping AB
    Inventors: Axel Lamas, Stefan Hansson, Bo Clarstrom, Jesper Karrhammar, Goran Brottgardh
  • Patent number: 6289800
    Abstract: A citrus-juice extractor has two squeeze belts (1, 2) with vertical squeeze surfaces (4) on opposite sides of a progressively narrowed squeeze channel (3). A fruit-half feeder (10) at a wide end of the squeeze channel halves uncut fruit (37) and positions it cut-face-down on a horizontal conveyor (7) intermediate the fruit-half cutter and entrapment positioning between the vertical squeeze surfaces for progressively squeezing conveyance between the vertical squeeze surfaces while the fruit halves are in transit to a narrow exit end (6). Clean-water sprayers (13) and/or other conveyor washers spray-clean the squeeze belts of oil and other contaminants continuously intermediate return belt travel from exit end to the wide end of the squeeze channel. Width of the squeeze channel is pressure-controlled to accommodate widths and consistencies of fruit halves without rupturing the fruit peel.
    Type: Grant
    Filed: November 27, 2000
    Date of Patent: September 18, 2001
    Inventor: Jim H. Moody
  • Patent number: 6248245
    Abstract: A belt press having a frame with a first belt and a second belt rotatably mounted on the frame. A curved inlet guide is movably carried on the frame. The inlet guide has a decreasing radius of curvature from an inlet end to an exit end. A positioning assembly is mounted on the frame and is attached to the inlet end of the inlet guide to raise and lower the inlet end of the inlet guide.
    Type: Grant
    Filed: July 3, 2000
    Date of Patent: June 19, 2001
    Assignee: Ashbrook Corporation
    Inventor: James E. Thompson
  • Patent number: 6221265
    Abstract: Methods for the concentration of a dilute material such as a fiber suspension are disclosed including enclosing the dilute material between a first straining belt and a second straining belt both moving through endless paths, and in which the width of the first straining belt is greater than the width of the second straining belt, and the method includes causing the longitudinal edges of the first straining belt to overlap the longitudinal edges of the second straining belt in an initial concentration stage, unfolding the longitudinal edges of the first straining belt and then further compressing the concentrated layer produced against the first straining belt in a further concentration stage. Apparatus for carrying out this method is also disclosed.
    Type: Grant
    Filed: June 28, 2000
    Date of Patent: April 24, 2001
    Assignee: Valmet Fibertech AB
    Inventor: Ebbe Hodén
  • Patent number: 6126789
    Abstract: A shoe press, in particular for a paper machine, comprising a pair of rolls, with one roll having a flexible roll sleeve that rotates around a stationary carrier and support devices, the flexible roll sleeve having axial end areas and being mounted on a carrier in a radially rotatable manner at each of its axial end areas over the support devices, each roll having a shoe with a flat support surface, the support surface of the shoe of one roll supporting an interior side of the roll sleeve, the support surfaces being arranged essentially parallel to each other to create a press opening therebetween, and at least one of the support devices being radially flexible, and in particular elastic.
    Type: Grant
    Filed: November 4, 1997
    Date of Patent: October 3, 2000
    Assignee: Voith Sulzer Papiermaschinen GmbH
    Inventors: Christian Schiel, Andreas Schuette, Wolfgang Schuwerk, Joachim Grabscheid, Werner Leitenberger, Uwe Matuschczyk, Christian Steger, Wolf Gunter Stotz
  • Patent number: 6116156
    Abstract: A machine is provided for producing a continuous material web. In particular, a paper web or a cardboard web can be produced by the machine. The machine has a number of rolls, around which the material web is guided by the use of at least one belt. The belt has at least two zones. The zones have different properties with at least one of the zones being designed to transmit a drive force to the rolls of the machine.
    Type: Grant
    Filed: July 2, 1998
    Date of Patent: September 12, 2000
    Assignee: Voith Sulzer Papiermaschinen GmbH
    Inventors: Christian Schiel, Karlheinz Straub
  • Patent number: 6042735
    Abstract: Process and device for draining a fibrous pulp suspension. The process may include positioning two surfaces to converge in a downstream direction, feeding the fibrous pulp suspension between the two converging surfaces, driving at least one of the two converging surfaces to move the suspension with a relative translational velocity, and draining the fibrous pulp suspension through each of the two surfaces. The device may include two arcuate surfaces positioned to form converging surfaces. One of the two arcuate surfaces may include a drivable, pivotable, and rotatable cylinder having an outer sleeve with openings, the other of the two arcuate surfaces may include a screen positioned to be guided around at least a portion of the outer sleeve. The screen and the openings may form drains for draining the fluid pulp suspension.
    Type: Grant
    Filed: August 29, 1997
    Date of Patent: March 28, 2000
    Assignee: Voith Sulzer Stoffaufbereitung GmbH
    Inventors: Axel Gommel, Herbert Holik, Josef Schneid
  • Patent number: 6003684
    Abstract: A device for dewatering solid-liquid suspensions, in particular pulp suspensions, in which the suspension is dewatered between two belts and a dewatering zone is formed in the shape of a wedge between the two belts. The wedge height at its end closest to the outlet is adjustable over the entire belt width by an adjusting element.
    Type: Grant
    Filed: January 25, 1999
    Date of Patent: December 21, 1999
    Assignee: Andritz-Patentverwaltungs-Gesellschaft m.b.H.
    Inventors: Karl Eickhoff, Peter Scheucher, Georg Reck
  • Patent number: 5961827
    Abstract: The invention relates an apparatus for the dewatering of sludge and similar substances with a sludge chamber (20) provided with filter areas (25) having at least one sludge inlet being connected to a device (3) creating a hydrostatic filtration pressure. The sludge chamber is formed by pressure plates (22, 23) which can be pressed against each other to create an additional mechanical dewatering pressure by high pressure generators (33). Further there is provided a predewatering stage (2) containing filter areas which is forming a compensation container (5) and which is connected to a continuous sludge feed (6). The device (3) for creating the hydrostatic filtration pressure is formed as one or more syringe-like piston cylinder units (14) of preferably as one or more containers being changeable in volume.
    Type: Grant
    Filed: August 6, 1997
    Date of Patent: October 5, 1999
    Inventor: Albert Bahr
  • Patent number: 5943951
    Abstract: Flexible press sleeve for a press roll for treating a web includes an inside surface including a longitudinal press area adapted to be pressurized with a press shoe by directing pressure radially outward, and a flexible section on at least one end of the press area having a greater flexibility than a flexibility of the press sleeve outside the flexible section, without causing a significant weakening of the press sleeve within the flexible section. A press shoe includes the press roll and a mating roll forming a press opening with the press roll. A method of treating a web includes draining a fibrous pulp web by using the press shoe.
    Type: Grant
    Filed: December 16, 1997
    Date of Patent: August 31, 1999
    Assignee: Voith Sulzer Papiermaschinen GmbH
    Inventors: Josef Muellner, Uwe Matuschczyk
  • Patent number: 5900139
    Abstract: A filter press for reducing the water content in a starting material including a pressure chamber with a stationary lower plate and five hydraulically mobile chamber walls for applying pressure to the starting material.
    Type: Grant
    Filed: March 21, 1997
    Date of Patent: May 4, 1999
    Assignee: Maschinenfabrik J. Dieffenbacher GmbH & Co.
    Inventor: Friedrich B. Bielfeldt
  • Patent number: 5887514
    Abstract: The invention relates to a method, a press, and a control device for reducing the capillary-bound water content in fiber cells of carbon-containing, finely comminuted solid materials and/or sludges. The method according to the invention includes rapidly raising the movable press plate of a filter press while the pressure chamber remains closed. A steam-coal dust mixture is formed due to the rapid expansion. At the same time, a first discharge lock is opened while the second discharge lock remains closed so that the exhaust steam flows in the direction of the controlled outlet valve. The exhaust steam can then be sent to a heat exchanger and then to another heat exchanger and, finally, may be reused for a subsequent operating cycle.
    Type: Grant
    Filed: March 21, 1997
    Date of Patent: March 30, 1999
    Assignee: Maschinenfabrik J. Dieffenbacher GmbH & Co.
    Inventors: Friedrich B. Bielfeldt, Eckhard Kintscher
  • Patent number: 5879551
    Abstract: A device for dewatering suspensions such as sludge or similar dewaterable goods contains several rollers and filtering webs that follow a sinuous path around the rollers. The width of at least one pressure gap, as well as the force which is applied on the goods to be filtered in this pressure gap, may be adjusted by sliding or swivelling so that the ratio between linear pressure and surface pressure can be adapted to the properties of the goods to be dewatered. By influencing this ratio it is possible from a standard model to cover a wide range of applications by simple and economic means, so that the cost-effectiveness ratio is improved.
    Type: Grant
    Filed: July 2, 1996
    Date of Patent: March 9, 1999
    Assignee: Gebr, Bellmer GmbH & Co., KG
    Inventors: Ulrich Kolmar, Harald Matern, Lothar Wenzel
  • Patent number: 5868903
    Abstract: The invention refers to a device for dewatering and/or washing suspensions, especially fibre stock suspensions, with two dewatering rolls rotating in opposite directions, where at least a further two guide rolls, especially press rolls, are provided and a woven, especially endless woven, wire or filter belt runs over each combination of one dewatering roll and one further guide roll, by which arrangement the suspension to be dewatered and/or washed is carried in the gap between the two belts and dewatered. The invention is mainly characterised by the two belts forming a vertical gap and by a device to guide the belts being mounted in the region of this vertical gap.
    Type: Grant
    Filed: April 14, 1997
    Date of Patent: February 9, 1999
    Assignee: Andritz-Patentverwaltungs-Gesellschaft m.b.H.
    Inventors: Franz Petschauer, Johann Sbaschnigg, Wilhelm Mausser
  • Patent number: 5862746
    Abstract: Apparatus for reducing the water content of water-containing, granular brown coal under the action of thermal energy and pressure on the material (14) distributed flat in bed form using a press (9, 10) in which the brown coal is subjected to a mechanically applied initial surface pressure and which is furnished with orifices (21) for feeding steam (HD) which, supplying thermal energy to the brown coal, heats this, with condensation, and the hot water (HW) contained in the heated brown coal is expressed for use as a waste-heat source, a vessel (30) being provided for collecting the hot water (HW), from which vessel the hot water (HW) is passed to the orifices (21) in the press (9, 10), and which vessel is furnished with an inlet for the steam (HD) for expelling the hot water (HW).
    Type: Grant
    Filed: February 3, 1997
    Date of Patent: January 26, 1999
    Assignee: Maschinenfabrik J. Dieffenbacher GmbH & Co.
    Inventor: Friedrich Bielfeldt
  • Patent number: 5863429
    Abstract: In a method and apparatus for removing water from sludge the sludge is introduced into an intermediate chamber from which it is fed into at least one sludge chamber having a filter surface. A hydrostatic pressure is built up in the sludge chamber to remove the water. The sludge chamber is then opened and the filter surface moved out of the sludge chamber to remove the filter cake. The hydrostatic pressure is generated by the sludge being transferred out of the intermediate container, after the continuous feed of sludge thereto has been cut off, by positive displacement of the volume of sludge from the intermediate container into the sludge chamber. The feed of sludge into the sludge chamber may occur simultaneously at a plurality of points from a corresponding number of intermediate containers.
    Type: Grant
    Filed: November 28, 1995
    Date of Patent: January 26, 1999
    Inventor: Albert Bahr