Means Applying Fluid Patents (Class 162/275)
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Patent number: 6364959Abstract: A process and apparatus for cleaning a transport belt of a machine for the production or processing a web. The apparatus includes at least one nozzle device composed of a rotatable nozzle head having at least one cleaning nozzle, a transport device including a crosspiece extending substantially crosswise to a transport belt travel direction, in which the at least one nozzle device is coupled to the transport device and adapted for displacement along the crosspiece. A traversing speed of the nozzle device is very low and falls within a range of between approximately 1 mm/min and 10 mm/min. Alternatively, the at least one nozzle is positionable in a plurality of cleaning positions that are successively arranged crosswise to the transport belt, and the at least one nozzle is held stationary in each respective cleaning position for a predefined time period.Type: GrantFiled: May 13, 1999Date of Patent: April 2, 2002Assignee: Voith Sulzer Papiertechnik Patent GmbHInventors: Karlheinz Straub, Dieter Haberzettl, Birgit Bertram, Johann Eisler, Lutz-Thomas Herrmann
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Patent number: 6361654Abstract: A system and method for transferring a nonwoven web in a wet papermaking process to a fabric is disclosed. The system includes a vacuum shoe that operates in conjunction with a transfer shoe. The vacuum shoe is contacted against a carrier fabric which is designed to receive the nonwoven web. The transfer shoe, on the other hand, is configured to contact a transfer fabric from which the web is transferred. The transfer shoe includes an air nozzle which contacts the nonwoven web with a pressurized gas as the web is drawn towards the vacuum shoe. The system of the present invention is particularly well suited to processing lower basis weight webs and can be used in rush transfer processes.Type: GrantFiled: April 26, 2000Date of Patent: March 26, 2002Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Strong C. Chuang, Peter J. Allen
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Patent number: 6360758Abstract: A cleaning device in a paper or board machine, for cleaning a fabric therein, the fabric moving in a direction of movement. The device comprises a nozzle which directs a water shower or jet against the fabric which is to be cleaned, the nozzle including a first turning point, and wherein there is a first plane of the water shower or jet issuing from the nozzle. A plurality of water conduits which transport water to the nozzle. And, the nozzle being mounted so that the position thereof may be changed by turning the nozzle back and forth around the first turning point in the first plane, so as to change the direction of the water shower or jet discharged from the nozzle and so that the water shower is moved in a first linear movement.Type: GrantFiled: September 10, 1999Date of Patent: March 26, 2002Assignee: Metso Paper, Inc.Inventors: Ilkka Eivola, Markku Lemetyinen
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Publication number: 20010007279Abstract: Method to reduce adhesion of a damp fibrous material web, e.g., a paper or material web, to a rotating roll. The method includes producing a steam cushion between the rotating roll and the fibrous material web.Type: ApplicationFiled: September 15, 1998Publication date: July 12, 2001Applicant: VOITH SULZER PAPIERMASCHINEN GMBHInventor: DR. MARTIN KUSTERMAN
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Patent number: 6254730Abstract: The invention provides a novel impact angle changing shower for spraying a fluid upon a moving belt surface while the belt travels at a selected belt velocity. The shower includes nozzles journaled to rotation about an axis in a plane normal to the belt surface and transverse to the belt direction. The nozzles are continuously supplied with pressurized fluid and direct a fluid stream at a selected nozzle velocity and nozzle angle relative to the plane. The orientation of the nozzles is selected to optimize the desired function namely, to clean the belt surface without damaging the belt fabric or felt, or to penetrate the belt to increase fluid absorption by the belt. The fluid stream nozzle velocity can be decomposed using vector mathematics into two vector components: a belt velocity vector component parallel to the belt direction; and a belt impact velocity vector oriented at an impact angle defined relative to the normal transverse plane.Type: GrantFiled: February 9, 1999Date of Patent: July 3, 2001Assignee: James Ross LimitedInventor: Jacek J. Macierewicz
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Patent number: 6248213Abstract: A method and apparatus for washing a fabric from a paper machine or equivalent, in which a washing fluid is applied to the fabric. In the procedure, the quantity of washing fluid is removed from the fabric and measured by a measuring device, whereby the measurement of the quantity of washing fluid communicates with a control unit that regulates a washing chemical. The regulation of the dosage of washing chemical is controlled on the basis of date adjusted or programmed on the basis of the liquid washing fluid collected.Type: GrantFiled: December 3, 1999Date of Patent: June 19, 2001Assignee: Ecopump OyInventor: Juha Karvinen
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Patent number: 6228216Abstract: A gas stream directed at a velocity against a cellulosic web in a papermaking machine can act to transfer the web from a transport web moving at a first speed to a transport web moving at a second slower speed. The transport webs apply a linear velocity to each to the cellulosic web on the transport web. The gas stream in the form of an air knife can be directed through the first fabric against the web and can transfer the web from the first fabric to the second fabric. The difference in velocity between the first transport web and the second, increases bulk, introduces a surface finish or otherwise modifies the character of the cellulosic web.Type: GrantFiled: July 10, 1998Date of Patent: May 8, 2001Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Jeffrey D. Lindsay, Richard J. Kamps
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Patent number: 6153056Abstract: Draining device and method for draining water from an interior surface of a felt belt loop circulating in a run direction via centrifugal force at a region of convex curvature of the interior surface of the felt belt. The draining device includes jets positioned across a width of the felt belt adapted to blast one of a displacing material and a displacing fluid against the felt belt at a position of one of in and in front of the convex region with respect to the run direction. The method includes directing jets of one of displacing fluid and displacing material against the interior surface of the felt belt to displace the water in the interior surface of the felt belt, and centrifugally spinning the displaced water out of the interior surface of the felt belt into a collecting device located within the felt belt loop.Type: GrantFiled: June 30, 1998Date of Patent: November 28, 2000Assignee: Voith Sulzer Papiertechnik Patent GmbHInventor: Christian Schiel
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Patent number: 6136148Abstract: A method and apparatus for cleaning a drying fabric of a paper machine. In the method a cleaning liquid is introduced into a gap (3) defined by the roll or cylinder (2) of a paper machine and a fabric (1) being fed onto the roll or cylinder. The cleaning liquid is pressed between the roll or cylinder (2) and the fabric (1) and is carried along with the fabric and is spread along the whole width of the fabric. The apparatus includes means for introducing and spreading the cleaning liquid into the gap between the roll and cylinder (2) and the drying fabric and, optionally, includes means (6) for collecting the cleaning liquid.Type: GrantFiled: October 14, 1997Date of Patent: October 24, 2000Assignee: EV Group OyInventors: Pekka Koskinen, Timo Haverinen
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Patent number: 6126788Abstract: An apparatus for the dewatering of a traveling press felt carries a purging fluid to the inside surface of the felt loop. The purging fluid flushes water from the felt into receptacles inside the felt loop. Purging nozzles oriented in the cross machine direction, or a multitude of suction slots oriented in the running direction, may be used. The nozzles or slots are incorporated into a nozzle block that is fastened to a suction box or a blow box.Type: GrantFiled: June 29, 1998Date of Patent: October 3, 2000Inventor: Christian Schiel
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Patent number: 6099691Abstract: A method and apparatus for cleaning the forming fabric used on a papermaking machine includes a chamber surrounding a span of the forming fabric on either side thereof. A source of sub-atmospheric air pressure is connected to the chamber for removing water mist surrounding the fabric. Mounted within the chamber is a pair of high pressure-low volume water impingement showers in substantially opposed array for directing jets of relatively high pressure water against the forming fabric as the forming fabric passes through the chamber via slots on either end thereof. In a preferred embodiment, downstream of the pair of high pressure needle showers is a second shower apparatus comprising a relatively low pressure-high volume flooding water shower to direct a water spray against the inner side of the looped forming fabric to flood the interstices of the forming fabric with water to wash out pulp fibers therefrom.Type: GrantFiled: March 27, 1998Date of Patent: August 8, 2000Assignee: Beloit Technologies, Inc.Inventors: Robert L. Clarke, Jeffrey H. Pulkowski
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Patent number: 6051108Abstract: A method is disclosed for removing and preventing the buildup of contaminants in papermaking wet press felts and on forming wires using a cleaning solution which contains at least one acidic cleaning compound and peracetic acid.Type: GrantFiled: July 28, 1998Date of Patent: April 18, 2000Assignee: Nalco Chemical CompanyInventor: Ollie O'Neal, Jr.
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Patent number: 5964960Abstract: Cleaning device to clean a roll, e.g., a concrete or granite roll, in a paper machine. The cleaning device may include a spray unit that may include a high-pressure spray device having an operational pressure of at least approximately 10 bar to spray a surface of the roll with a cleaning agent and a device to remove the cleaning agent from the roll surface.Type: GrantFiled: June 19, 1997Date of Patent: October 12, 1999Assignee: Voith Sulzer Papiermaschinen GmbHInventor: Karl Josef Boeck
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Patent number: 5961735Abstract: A method of treating a felt to remove contaminants therein comprises the steps of providing a felt used in transporting paper webs, preparing an enzyme solution comprising an enzyme selected from the group consisting of a cellulase, a hemicellulase, and mixtures thereof, applying the enzyme solution to the felt for a first predetermined period of time, rinsing the felt with water, applying a solution of sodium hydroxide to the felt to remove the enzyme solution, and rinsing the felt with water to remove the sodium hydroxide solution thereby removing the contaminants in the felt.Type: GrantFiled: June 5, 1997Date of Patent: October 5, 1999Assignee: North Carolina State UniversityInventors: John A. Heitmann, Jr., Thomas W. Joyce
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Patent number: 5958190Abstract: A cleaning apparatus is disclosed for cleaning a forming wire of a paper machine. The apparatus includes a shower which is disposed adjacent to the forming wire for applying a shower of cleaning fluid to the wire. A blow box is disposed closely adjacent to the forming wire and downstream relative to the shower. The box is connected to a source of pressurized air for blowing a jet of air through the wire for removing the cleaning fluid therefrom. A plate is disposed between the box and the wire. The plate defines a plurality of slots which are disposed obliquely to a direction of movement of the wire in order to supply a multiplicity of pressure pulses to the wire for removing contaminants therefrom.Type: GrantFiled: June 25, 1997Date of Patent: September 28, 1999Assignee: Beloit Technologies, Inc.Inventors: Matthew L. Gregersen, Paul P. Newton, David E. Oldenburg, Jeffrey H. Pulkowski, Jay Shands
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Patent number: 5944956Abstract: A doctor system (20) and an associated method for cleaning the moving surface (30) of a papermachine component (22) which is begrimed or wetted by a paper web (28) moved around the surface utilizes an air nozzle (54) supportable in a stationary condition adjacent the surface of the papermachine component for directing a stream of air in the form of a knife from a source generally toward the surface to dislodge grime and water from the surface. The system also includes a collection receptacle (68) positionable adjacent the nozzle for collecting grime and water which are dislodged from the surface by the air knife for disposal.Type: GrantFiled: April 22, 1997Date of Patent: August 31, 1999Assignee: Valmet, Inc.Inventor: Marco Marcheggiani
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Patent number: 5932070Abstract: The present invention is directed to a device for removing at least one of paper sheet remnants and a paper sheet from a belt. The device may include a blow device including at least one blow opening extending lateral to a travel direction of the belt and a compressor coupled to the blow device to supply compressed air to the at least one blow opening. The at least one blow opening may be directed toward the at least one of the paper sheet remnants and the paper sheet to be removed.Type: GrantFiled: September 10, 1997Date of Patent: August 3, 1999Assignee: Voith Sulzer Papiermaschinen GmbHInventors: Klaus Esslinger, Gerhard Kotitschke, Wolfgang Mayer, Andreas Meschenmoser, Gunther Mohrhardt
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Patent number: 5919338Abstract: A cleaning apparatus is disclosed for cleaning and removing contaminants from a forming wire of a paper machine. The apparatus includes a shower which is disposed adjacent to the wire for supplying a cleaning fluid onto one side of the forming wire. A leading blade is disposed downstream relative to the shower. The leading blade contacts the wire on the one side of the wire and extends in a cross-machine direction across the wire. A trailing blade is disposed downstream relative to the leading blade. The arrangement being such that the leading blade and the trailing blade defined therebetween a cross-machine directional slot. The slot is connected to a source of pressurized air so that the pressurized air flows through the slot and through the wire for removing the cleaning fluid and the contaminants from the wire. Furthermore, the trailing blade and the wire define therebetween a wedge shaped gap which converges in a direction from the slot and away from the leading blade.Type: GrantFiled: October 20, 1997Date of Patent: July 6, 1999Assignee: Beloit Technologies, Inc.Inventors: Jeffrey H. Pulkowski, Matthew Gregersen
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Patent number: 5900117Abstract: A papermachine clothing cleaning apparatus has a fluid injection nozzle with an apertured plate (14). The injection nozzle directs fluid onto the papermachine clothing (11) in order to clean the clothing. The areas of papermachine clothing that are adjacent the areas of clothing being impacted by the fluid are located in a press formed by the apertured plate (14) and a body (15) provided at the opposite surface of the fabric (11).Type: GrantFiled: April 17, 1997Date of Patent: May 4, 1999Assignee: Scapa Group PLCInventor: Per-Ola Lidar
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Patent number: 5879515Abstract: The invention proposes a jet device for a machine for producing a material web, in particular a paper or board web, having a nozzle device for dispensing a jet of liquid which is under pressure and is directed onto the material web and/or a transport belt guiding the material web. A changeover device by which the pressure with which the medium impinges on the transport belt or the material web, respectively, can be set.Type: GrantFiled: February 26, 1996Date of Patent: March 9, 1999Assignee: Voith Sulzer Papiermaschinen GmbHInventors: Karlheinz Straub, Wolfgang Schneider, Hans-Peter Sollinger, Jurgen Banning, Markus Oechsle
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Patent number: 5863386Abstract: A method and device for washing a drying wire in a dryer group in a dryer section of a paper or board machine in which the drying wire is guided by drying cylinders, reversing rolls and guide rolls. A liquid jet is directed at the drying wire at a location after a first one of the drying cylinders in the dryer group and before a last one of the drying cylinders in the dryer group and/or a location on a downward run of the drying wire from one of the drying cylinders. The washing device includes a spray device for providing the liquid jet and possibly an air blow device for blowing air at the drying wire after the liquid jet in order to dry the drying wire.Type: GrantFiled: February 28, 1997Date of Patent: January 26, 1999Assignee: Valmet CorporationInventors: Vesa Vuorinen, Iikka Eivola
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Patent number: 5851358Abstract: The invention is directed to a paper making machine having a wet end associated with a wet fiber web. A forming fabric has a plurality of voids therein and carries liquid from the fiber web. A roll disposed at the wet end of the paper making machine carries the forming fabric. The roll and the forming fabric define a diverging area therebetween which causes liquid in the forming fabric to exit the voids. A doctor back includes a doctor element associated with the roll. A shower provides a liquid output which is directed relative to and lubricates the doctor element. A suction chamber has an at least partially open top and an outlet. The open top is positioned relative to each of the doctor blade and the diverging area to collect liquid from the shower and liquid exiting the voids in the forming fabric in the diverging area. A cyclone separator connected to the suction chamber receives liquid from the suction chamber outlet.Type: GrantFiled: April 8, 1997Date of Patent: December 22, 1998Assignee: Voith Sulzer Paper Technology North America, Inc.Inventor: Werner Kade
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Patent number: 5820732Abstract: A cleaning apparatus is disclosed for cleaning a forming wire extending around a wire turning roll of a paper machine. The apparatus includes a shower which is disposed upstream relative to the turning roll for spraying a cleaning liquid onto the forming wire. A housing is disposed between the shower and the turning roll, the housing being connected to a source of pressurized air. The housing defines an opening which has a first and a second end. The housing also defines an orifice which has an upstream and a downstream end for permitting a flow therethrough of the pressurized air such that the flow of air is directed against the wire for at least partially removing the cleaning liquid therefrom. The opening cooperates with the turning roll such that the opening conforms with the turning roll for substantially sealing the opening against loss of the pressurized air so that the flow of pressurized air is directed through the orifice.Type: GrantFiled: June 23, 1997Date of Patent: October 13, 1998Assignee: Beloit Technologies, Inc.Inventors: Matthew L. Gregersen, Paul Newton, David E. Oldenburg, Jeffrey H. Pulkowski, Jay Shands
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Patent number: 5802648Abstract: A method and apparatus for cleaning dryer fabrics and the like comprising an ultra high pressure water jet or jets at reduce water volume.Type: GrantFiled: July 6, 1995Date of Patent: September 8, 1998Assignee: Thermo Fibertek Inc.Inventors: John A. Neun, Peter T. Carstensen, Salvatore C. Panarello
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Patent number: 5783044Abstract: The invention relates to a device for cleaning a moving transport belt in a papermaking machine, for instance a dry or wet wire belt or a felt belt, having at least one nozzle which can be directed against the transport belt for spraying the woven belt with liquid or gaseous fluid. A suction chamber 18 surrounds and cooperates with the cleaning nozzle (8), so that dirt and/or water mist detached by the nozzle jet (27) from the transport belt (4) or residual water are drawn into the suction chamber (18) and led away, avoiding dirtying or contamination of the nearby area.Type: GrantFiled: February 26, 1996Date of Patent: July 21, 1998Assignee: Voith Sulzer Papiermaschinen GmbHInventors: Wolfgang Schneider, Hans-Peter Sollinger, Karlheinz Straub, Jurgen Banning, Markus Oechsle
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Patent number: 5725737Abstract: The invention relates to an apparatus for detecting plugged sites and holes and for measuring of the water permeability properties of pervious machine fabrics. Plugged sites in a permeable fabric are detected by sensing water pressure pulses occurring in the nozzle at the moment when a stream of water flowing through the nozzle contacts a plugged site on a fast running fabric. The apparatus can be used on-line to simultaneously detect plugged sites and holes on a moving pervious fabric while monitoring its water permeability properties.Type: GrantFiled: September 18, 1996Date of Patent: March 10, 1998Assignee: Pulp and Paper Research Institute of CanadaInventors: Ivan I. Pikulik, P. Daniel Gilbert, Jean Hamel
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Patent number: 5660688Abstract: A device and method for washing a wire in a paper or board machine including a wash-nozzle pipe arranged at one side of the wire for spraying a jet of a washing liquid such as water at the wire. At an opposite side of the wire, a suction device applies suction to draw mist arising from the washing of the wire. Directly alongside the suction device, at the same side of the wire, there is a blow device, through which a gas such as air is blown onto the face of the wire and through the wire to dry the wire and remove additional water, dirt and/or other impurities not removed by the suction device.Type: GrantFiled: May 3, 1996Date of Patent: August 26, 1997Assignee: Valmet CorporationInventor: Seppo Kiviranta
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Patent number: 5611892Abstract: A closed press section in a paper machine including a compact combination of press rolls, some of which define press nips with each other between which the web has a closed draw supported by the face of a fabric. The press section has a center roll in connection with which at least one press nip is formed. A closed loop of a transfer band is passed around the center roll. The web is transferred on an outer face of the transfer band after the last press nip in the compact combination of rolls as a closed and constantly supported draw onto a drying wire in a drying section following after the press section. The transfer band loop is preferably made of a fabric that substantially does not receive water and does not rewet the web. The web-adhesion properties of the outer face of the transfer band are chosen so that, after the last nip, the web follows the transfer band, and so that the web can be transferred as a fully closed draw onto the drying wire.Type: GrantFiled: October 6, 1994Date of Patent: March 18, 1997Assignee: Valmet CorporationInventors: Mikko Karvinen, Reima Kerttula, Jorma Laapotti, Juhani Pajula
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Patent number: 5595632Abstract: A shower for conditioning a press felt or dryer fabric in a paper making machine, including a fixed housing extending laterally of the felt or fabric, and an oscillating conduit assembly in the housing including a plurality of nozzles spaced apart in series on the conduit assembly with each nozzle having a solenoid valve associated therewith and each solenoid valve being independently controlled to selectively open or shut the solenoid valves such that selective spraying of the press felt or fabric can be provided for.Type: GrantFiled: February 1, 1994Date of Patent: January 21, 1997Assignee: James Ross LimitedInventor: Jacek Macierewicz
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Patent number: 5573644Abstract: An apparatus for guiding a wire including a device for producing a washing jet and a device for removing washing mist generated from the washing jet which has a suction box. The suction box is located on an opposite side of the wire from the device for producing a washing jet. The suction box has a duct through which the mist produced in the washing of the wire is passed into an inlet chamber. The duct is arranged at an angle, preferably at an acute angle, relative to the running direction of the wire. In conjunction with, a mist suction device, there is provided a list which is in contact with the wire and deflects the wire so that the direction of arrival of the wire at the list differs from the direction of departure of the wire from the list.Type: GrantFiled: December 5, 1994Date of Patent: November 12, 1996Assignee: Valmet CorporationInventors: Antti Poikolainen, Kari Lamminmaki
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Patent number: 5534116Abstract: The invention relates to a closed press section in a paper machine and comprises a compact combination of press rolls. Several of the rolls define press nips with each other, between which nips the web has a closed draw supported by the face of a fabric. The press section has a center roll in connection with which a press nip or press nips are provided. A closed loop of a transfer band is passed around the center roll. The web is transferred on an outer face of the transfer band after the last press nip in the compact combination of rolls as a closed and constantly supported draw onto a drying wire in a drying section following after the press section. The transfer band loop is made of a transfer band fabric that substantially does not receive water and does not rewet the web.Type: GrantFiled: October 20, 1994Date of Patent: July 9, 1996Assignee: Valmet Paper Machinery Inc.Inventors: Mikko Karvinen, Reima Kerttula, Jorma Laapotti, Juhani Pajula
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Patent number: 5517714Abstract: The device comprises a blowing device (2) extending transversely to the screen travel direction, said device having two mutually parallel strips extending transversely to the travel direction of the screen, namely a leading strip (41) and a trailing strip (42), each of which contacts circulating screen (11) with a screen guide surface. Between the two strips is a blowing opening connected to a source of compressed air (62). Between leading strip (41) and screen (11) a wedge-shaped gap (45) is formed, tapering in the screen travel direction, in which gap a water-spraying device (3) terminates. Blowing device (2) is located inside the endless loop of screen (11), and water-spraying device (3) is located on the outside.Type: GrantFiled: August 15, 1994Date of Patent: May 21, 1996Assignee: J. M. Voith GmbHInventor: Gerhard Kotitschke
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Patent number: 5512136Abstract: A plurality of spaced knock-off shower nozzles are located adjacent to an edge of a paper web forming wire to provide knock-off sprays which will remove trim strips from the wire. A control is provided to separately and independently control the spray nozzles so that the operator can adjust the number of nozzles being sprayed in accordance with the width of the trim strip.Type: GrantFiled: March 30, 1995Date of Patent: April 30, 1996Assignee: James River Paper Company, Inc.Inventors: Mustafa N. Altug, Leo J. Robert
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Patent number: 5433086Abstract: Disclosed herein is temperature regulating device for an air-circulated refrigerator capable of independently controlling the temperature of the freezer and the fresh food compartments air communicating with each other, by employing an evaporator, a first and a second fans which are all installed in the freezer compartment, and a thermostatic control circuitry.Type: GrantFiled: October 7, 1993Date of Patent: July 18, 1995Assignee: Daewoo Electronics Co., Ltd.Inventors: Kwang-Yeon Cho, Kee-Tae Lee, Yi-Wook Choi
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Patent number: 5431784Abstract: A mold composed of bonded water-insoluble particles and having a molding layer and a support layer. The molding layer includes first water insoluble particles, having an average size of 0.2-1.0 mm bonded to form a layer having a thickness 1-20 times the average size of the first particles. The support layer positioned on the inner surface of the molding layer, on which the fiber bodies are not formed, includes of second water-insoluble particles, having an average size of 1.0-10.0 mm, bonded to form a layer having a thickness of at least the average size of the second particles. The pulp mold has advantages in that it hardly suffers from clogging, it produces fiber bodies each having a smooth surface, it is free from damage caused by repeated use, and it produces fiber bodies in a short period of time.Type: GrantFiled: March 2, 1993Date of Patent: July 11, 1995Assignee: NGK Insulators, Ltd.Inventors: Yasuhiro Miyamoto, Toshiaki Ishihara, Minoru Uda
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Patent number: 5371126Abstract: Aqueous compositions and process aids useful in paper processing for quenching optical brighteners, particularly under alkaline paper production conditions. The process aids are aqueous compositions comprising (a) an acid addition salt or quartenization product of a cyclic amidine, (b) a polyethyleneimine and optionally (c) an acid. The aqueous compositions and process aids may be added to paper feedstocks in paper production apparatus or to paper production apparatus absent a paper feedstock.Type: GrantFiled: April 14, 1993Date of Patent: December 6, 1994Assignee: Sandoz Ltd.Inventor: Ralph H. Strickler
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Patent number: 5354426Abstract: A blade mounting frame is attached to a support structure having an endless forming wire rotatably mounted thereon. At least one turn shoe is mounted to the support structure for guiding the rotating path of the forming wire. A blade assembly attached to the blade mounting frame includes a blade in contact with the wire for removing debris from the forming wire before the debris is caught at a nip between the rotating wire and the turn shoes.Type: GrantFiled: March 29, 1993Date of Patent: October 11, 1994Assignee: Boise Cascade CorporationInventor: Kevin S. Rucker
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Patent number: 5351886Abstract: A two piece non-moving nozzle assembly of which one piece includes an orifice with an internal extension acting as a solids barrier and the second piece providing channels for liquid and air passage. At a predetermined interval, air is automatically forced through the orifice in the opposite direction to liquid flow. When air is forced through the orifice, solids are removed.Type: GrantFiled: February 11, 1993Date of Patent: October 4, 1994Inventors: Dan F. Bull, Frank F. Bull
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Patent number: 5240563Abstract: Closed press section in a paper machine, comprising a compact combination of press rolls. Certain of rolls define press nips with each other, between which nips the web has a closed draw supported by the face of a fabric. The press section has a center roll in connection with which a press nip or press nips are provided. A closed loop of a transfer band is passed around the center roll. The web is transferred on an outer face of the transfer band after the last press nip in the compact combination of rolls as a closed and constantly supported draw onto a drying wire in a drying section following after the press section. The transfer band loop is made of a transfer band fabric that substantially does not receive water and does not rewet the web. The web-adhesion properties of the outer face of the transfer band fabric are chosen so that, after the last nip, the web follows the transfer band fabric, and so that the web can be transferred as a fully closed draw onto the drying wire.Type: GrantFiled: February 3, 1992Date of Patent: August 31, 1993Assignee: Valmet Paper Machinery Inc.Inventors: Mikko Karvinen, Reima Kerttula, Jorma Laapotti, Juhani Pajula
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Patent number: 5120401Abstract: The invention is related to a device in a paper machine for collecting the mist that is produced in the spraying of high-pressure water employed in the washing of a wire. The device includes an inlet duct extending across the wire width. The central axis of the device is at an oblique angle in relation to the direction of running of the wire. The device includes a jet guide in connection with an inlet opening of the inlet duct. The jet guide is connected to the frame by means of adjusting members and operates as an air closure and as a regulator of suction capacity. The position of the jet guide can be adjusted relative the surface plane of the wire by means of the adjusting member.Type: GrantFiled: April 16, 1991Date of Patent: June 9, 1992Assignee: Valmet Paper Machinery Inc.Inventors: Seppo Kiviranta, Tuomo Kari
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Patent number: 5087171Abstract: The invention relates to a centrifugal pump particularly adapted for pumping fibrous suspensions from within a reservoir, wherein the pump includes a rotor arranged wholly within the reservoir for cooperation with the bottom wall thereof to effect fluidization of suspension and discharge of the fluidized suspension from the reservoir for passage through the pump, wherein an entrained gas, such as air, is withdrawn from the pump by means of a unique pump-out mechanism disposed rearwardly of a shroud of an impeller of the pump and including pump-out vanes and a repeller shroud cooperating with the impeller shroud and pump-out vanes to define radially opening flow paths, wherein flow openings extend across the impeller shroud for flow communication with the radially opening flow paths. The mechanism may also include repeller vanes carried by the repeller shroud to extend rearwardly of pump-out vanes.Type: GrantFiled: June 15, 1990Date of Patent: February 11, 1992Assignee: Goulds Pumps, IncorporatedInventors: Joseph B. Dosch, Charles A. Cappellino, George Wilson, James C. Osborne
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Patent number: 5045154Abstract: An improved conveyor edge product containing device for typical paper making machinery comprised of the main body (20) typically made of ultra-high molecular weight polyethylene conventionally machined with an elongated chamber (30) for fluid distribution to equally spaced nozzles (32) in the machine nozzle slot (34). The device generates a continuous overlapping fan spray pattern (66) creating a seal between the conveyor (52) and the device eliminating side discharge of paper pulp slurry (60).Type: GrantFiled: June 28, 1990Date of Patent: September 3, 1991Inventor: Mark R. Baluha
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Patent number: 4919336Abstract: A shower pipe (9) for use in the papermaking industry has a series of nozzles (13) through which jets of water are directed at a surface to be treated (for example, a filter screen or a pepermaker's felt). To prevent the nozzles becoming blocked by particles separating out of the water (particularly when the water has been recycled), a partition (24) or insert (33) is located within the shower pipe to define a passageway of reduced cross-sectional area through which water flows to the nozzles, with a preferred minimum velocity of 8 ft/sec.Type: GrantFiled: July 10, 1987Date of Patent: April 24, 1990Assignee: Albany International Corp.Inventors: James D. Hudon, Lionel T. Bloyce
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Patent number: 4880499Abstract: A method for measuring the permeability of pervious sheet material is disclosed; the measurement is based on the flow rate of water ejected at a given pressure between 2 and 1000 kPa through a nozzle pressed against one surface of the sheet material whose permeability is to be measured.Type: GrantFiled: May 13, 1987Date of Patent: November 14, 1989Assignee: Pulp and Paper Research Institute of CanadaInventor: Ivan I. Pikulik
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Patent number: 4880500Abstract: A papermaking machine is modified by replacing a conventional rotatable couch roll by a stationary couch device that still serves the essential functions of the roll, namely dewatering of the furnish carried by the web and modification of the direction of travel of the web to turn it down towards the main drive roll. This stationary device is made of an abrasion resistant ceramic material and has a member with a convexly curved upper surface on which the web slides. Water is sucked from the furnish by a vacuum applied through perforations in the member. The majority of these perforations preferably take the form of slots that extend obliquely to both the transverse extent of the machine and the direction of web travel. The arrangement permits easier and more effective maintenance of the vacuum than with a couch roll and more efficient dewatering, with no rewetting of the web or furnish when leaving the couch device.Type: GrantFiled: August 24, 1988Date of Patent: November 14, 1989Assignee: Eldridge, Visseau IncorporatedInventors: Gerald E. Eldridge, Gary A. Visseau
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Patent number: 4701242Abstract: A motorized shower head mechanism is disclosed in which a housing is provided with a track and a trolley, and a motor mounted on the trolley. The trolley is moved along the track by the motor and a shower head which extends through the housing is carried along by the trolley.Type: GrantFiled: April 12, 1985Date of Patent: October 20, 1987Assignee: Albany International Corp.Inventors: Robert V. Scarano, James D. Hudon
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Patent number: 4698134Abstract: There is taught a method and apparatus for the removal of foreign material and fluid from a fabric such as a press felt in a paper making machine, wherein a jet of gaseous material is directed at a surface of the felt without penetrating the felt to create a low pressure area to remove the fluid and foreign material within the fabric.Type: GrantFiled: October 21, 1985Date of Patent: October 6, 1987Assignee: Consolidated-Bathurst, Inc.Inventors: Marshall S. Green, deceased, Jean-Paul Boisvert
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Patent number: 4683028Abstract: In the continuous vacuum forming of articles from a fibrous slurry, e.g. from paper pulp, a plurality of two-piece hinged moulds are mounted on a transport apparatus 1 which transports the moulds stepwise in a loop. The internal surfaces of the moulds are defined by wire gauze of mesh 107,109 and the moulds are connected to a source of suction.The moulds, with the suction applied, are moved through the fibrous slurry contained in a tank 43, whereupon fibres are deposited on the mesh 107,109, much of the water being drawn off by the suction. The mould passes through a drying station, where warm air is sucked through the mould, further drying the article.The transport apparatus 1 is movable pivotably about an axis 6 by means of a fluid-operated ram 25. At the top of the path, the mould and the article therein are lowered onto a pin 61, a plurality of which are situated on an endless conveyor 59.Type: GrantFiled: February 6, 1985Date of Patent: July 28, 1987Assignee: Vernon and Company (Pulp Products) LimitedInventors: Martin Waller, Geoffrey Farrell, Kenneth W. Mills, deceased, by Margaret Mason, executor, by Geoffrey A. Shindler, executor
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Patent number: 4683027Abstract: Method and apparatus for regulating pressure in a wedge-shaped space between the wall of the headbox lip beam or the like and the breast roll. An arrangement is provided by which air jets are directed in a direction opposite to the direction in which the forming wire moves on the breast roll to eject air out of the wedge-shaped space to maintain the pressure induced therein at a desired level. The apparatus includes a blow box coupled to a source of pressurized air and the box having a wall in opposed relationship to the forming wire in which nozzle openings or slots are formed through which the air jets are directed. The blow box has a wider side which substantially closes the wedge-shaped space. Water jets are directed into the wedge-shaped space by water supply devices provided on the blow box for cleaning purposes.Type: GrantFiled: October 24, 1985Date of Patent: July 28, 1987Assignee: Valmet OyInventor: Kari Pitkajarvi
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Patent number: 4584058Abstract: An apparatus, method and band for forming and/or dewatering a fibrous web, in which the web or a pulp suspension layer forming the same is conveyed and supported through a significant portion of its run in a paper machine by a specific processing band, while liquid such as water is simultaneously removed therefrom by hydraulically contacting the same with liquid present under vacuum or underpressure within the processing band, through a finely porous, liquid-suction surface on the band that is saturated with liquid.Type: GrantFiled: May 21, 1984Date of Patent: April 22, 1986Assignee: Valmet OYInventors: Antti Lehtinen, Vaino Sailas, Markku Lampinen, Bjarne Ekberg