Patents Assigned to Andritz Fiedler GmbH
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Patent number: 11453977Abstract: A set for mechanical processing suspended fibrous material includes a die plate having receiving openings in a predefined arrangement for insertion of blade-shaped processing elements which jut out on a process side and are flowed onto by the fibrous material. The blade-shaped processing elements have each a plurality of foot regions in longitudinally spaced-apart relation, which pass through the die plate and jut out from the die plate on a process-distal. At least some of the foot regions of the processing elements reach into associated receiving grooves of a base plate on the process-distal side. As an alternative, transverse stiffening elements are arranged substantially orthogonally in the longitudinal direction of the processing elements such that the transverse stiffening elements stabilize the foot regions of the processing elements on the process-distal side.Type: GrantFiled: March 30, 2018Date of Patent: September 27, 2022Assignee: ANDRITZ FIEDLER GMBHInventors: Christoph Tichy, Wolfgang Beer, Thomas Mickelat, Peter Antensteiner
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Publication number: 20200179950Abstract: A discontinuously operated centrifuge, in particular sugar or starch centrifuge, includes a rotating, cylindrical centrifuge basket having a casing provided with openings and having an upper open end. An inner screen element formed as a composite unit of a screen mat and a support mat is insertable as a prefabricated, single-piece screen element into the centrifuge basket via the upper open end thereof. The screen element has ends abutting in a circumferential direction within the centrifuge basket, with axially extending end strips attached to the abutting ends of the screen element. A closure element in the form of an axially extending clamping strip cooperates with the end strips so as to lock and radially brace the screen element against the centrifuge basket casing. Attached on the centrifuge basket is an upper limiting flange, with an annular cover being screwed onto an upper limiting flange for securing the screen element.Type: ApplicationFiled: October 4, 2018Publication date: June 11, 2020Applicant: ANDRITZ FIEDLER GMBHInventors: Markus Weingartner, Philip Schofield
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Patent number: 10589196Abstract: A bar-type screen cage has profiled screen bars which are spaced apart in a circumferential direction. Multiple support arrangements which are spaced apart in an axial direction of the screen cage are fastened by welding to the profile bars at the outside. The screen bars, which are spaced apart in an axial direction, form screen slots between them. Each support arrangement includes at least two support wires which are closely spaced apart in the axial direction of the screen bars and which are fixed to the screen bars by resistance welding. The two support wires of each support arrangement and the profile bars-are fixedly connected to one another by way of an additional weld seam.Type: GrantFiled: February 25, 2016Date of Patent: March 17, 2020Assignee: ANDRITZ FIEDLER GMBHInventors: Thomas Mickelat, Michael Reinstein
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Patent number: 10279285Abstract: A profiled strainer bar has a base region and a head region. A straining slot or a straining gap is produced between flanks of the straining slot at the head region. Each flank at the head region has a radius with a common center on the upstream and downstream side. A strainer, preferably in the shape of a strainer basket, has straining slots or straining gaps formed between profiled strainer bars. The strainer bars have a geometry at the strainer bar base region with the geometry being adapted to receiving recesses of support elements and being received in the receiving recesses. The strainer bars are permanently secured to the receiving recesses. The strainer bars are profiled such that each flank on the head region of the strainer bar has a radius with a common center on the upstream and downstream side.Type: GrantFiled: August 14, 2014Date of Patent: May 7, 2019Assignee: ANDRITZ FIEDLER GMBHInventors: Thomas Mickelat, Michael Reinstein
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Publication number: 20180230650Abstract: A set for mechanical processing suspended fibrous material includes a die plate having receiving openings in a predefined arrangement for insertion of blade-shaped processing elements which jut out on a process side and are flowed onto by the fibrous material. The blade-shaped processing elements have each a plurality of foot regions in longitudinally spaced-apart relation, which pass through the die plate and jut out from the die plate on a process-distal. At least some of the foot regions of the processing elements reach into associated receiving grooves of a base plate on the process-distal side. As an alternative, transverse stiffening elements are arranged substantially orthogonally in the longitudinal direction of the processing elements such that the transverse stiffening elements stabilize the foot regions of the processing elements on the process-distal side.Type: ApplicationFiled: March 30, 2018Publication date: August 16, 2018Applicant: Andritz Fiedler GmbHInventors: Christoph Tichy, WOLFGANG BEER, THOMAS MICKELAT, PETER ANTENSTEINER
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Patent number: 9976253Abstract: A set for mechanical processing suspended fibrous material includes a die plate having receiving openings in a predefined arrangement for insertion of blade-shaped processing elements which jut out on a process side and are flowed onto by the fibrous material. The blade-shaped processing elements have each a plurality of foot regions in longitudinally spaced-apart relation, which pass through the die plate (2) and jut out from the die plate on a process-distal. At least some of the foot regions of the processing elements reach into associated receiving grooves of a base plate on the process-distal side. As an alternative, transverse stiffening elements are arranged substantially orthogonally in the longitudinal direction of the processing elements such that the transverse stiffening elements stabilize the foot regions of the processing elements on the process-distal side.Type: GrantFiled: June 24, 2015Date of Patent: May 22, 2018Assignee: Andritz Fiedler GmbHInventors: Christoph Tichy, Wolfgang Beer, Thomas Mickelat, Peter Antensteiner
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Publication number: 20180043289Abstract: A bar-type screen cage has profiled screen bars which are spaced apart in a circumferential direction. Multiple support arrangements which are spaced apart in an axial direction of the screen cage are fastened by welding to the profile bars at the outside. The screen bars, which are spaced apart in an axial direction, form screen slots between them. Each support arrangement includes at least two support wires which are closely spaced apart in the axial direction of the screen bars and which are fixed to the screen bars by resistance welding. The two support wires of each support arrangement and the profile bars-are fixedly connected to one another by way of an additional weld seam.Type: ApplicationFiled: February 25, 2016Publication date: February 15, 2018Applicant: ANDRITZ FIEDLER GMBHInventors: THOMAS MICKELAT, MICHAEL REINSTEIN
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Publication number: 20170191218Abstract: A set for mechanical processing suspended fibrous material includes a die plate having receiving openings in a predefined arrangement for insertion of blade-shaped processing elements which jut out on a process side and are flowed onto by the fibrous material. The blade-shaped processing elements have each a plurality of foot regions in longitudinally spaced-apart relation, which pass through the die plate (2) and jut out from the die plate on a process-distal. At least some of the foot regions of the processing elements reach into associated receiving grooves of a base plate on the process-distal side. As an alternative, transverse stiffening elements are arranged substantially orthogonally in the longitudinal direction of the processing elements such that the transverse stiffening elements stabilize the foot regions of the processing elements on the process-distal side.Type: ApplicationFiled: June 24, 2015Publication date: July 6, 2017Applicant: ANDRITZ FIEDLER GMBHInventors: CHRISTOPH TICHY, WOLFGANG BEER, THOMAS MICKELAT, PETER ANTENSTEINER
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Patent number: 9593449Abstract: A screening device for fibrous stock suspensions of the paper industry includes at least two separate screening baskets which are connected axially behind one another in the interior of a reinforcing device in the form of a back-up cylinder. A variable-diameter intermediate ring is arranged between the screening baskets. The reinforcing device has a cover part and a bottom part. By way of axial tensile force loading of the arrangement, the intermediate ring is loaded so as to bear radially in the circumferential direction in a gap-free manner against the associated axial ends or screening basket flanges of the screening baskets. The screening baskets are then clamped and fixed in a centrally positioned manner by the intermediate ring in cooperation with the end-side flange of the reinforcing device, the cover part, the bottom part and the intermediate ring.Type: GrantFiled: June 16, 2014Date of Patent: March 14, 2017Assignee: ANDRITZ FIEDLER GMBHInventors: Thomas Mickelat, Michael Reinstein
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Publication number: 20160153139Abstract: A screening device for fibrous stock suspensions of the paper industry includes at least two separate screening baskets which are connected axially behind one another in the interior of a reinforcing device in the form of a back-up cylinder. A variable-diameter intermediate ring is arranged between the screening baskets. The reinforcing device has a cover part and a bottom part. By way of axial tensile force loading of the arrangement, the intermediate ring is loaded so as to bear radially in the circumferential direction in a gap-free manner against the associated axial ends or screening basket flanges of the screening baskets. The screening baskets are then clamped and fixed in a centrally positioned manner by the intermediate ring in cooperation with the end-side flange of the reinforcing device, the cover part, the bottom part and the intermediate ring.Type: ApplicationFiled: June 16, 2014Publication date: June 2, 2016Applicant: Andritz Fiedler GmbHInventors: Thomas MICKELAT, Michael REINSTEIN
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Publication number: 20160144299Abstract: A profiled strainer bar has a base region and a head region. A straining slot or a straining gap is produced between flanks of the straining slot at the head region. Each flank at the head region has a radius with a common center on the upstream and downstream side. A strainer, preferably in the shape of a strainer basket, has straining slots or straining gaps formed between profiled strainer bars. The strainer bars have a geometry at the strainer bar base region with the geometry being adapted to receiving recesses of support elements and being received in the receiving recesses. The strainer bars are permanently secured to the receiving recesses. The strainer bars are profiled such that each flank on the head region of the strainer bar has a radius with a common center on the upstream and downstream side.Type: ApplicationFiled: August 14, 2014Publication date: May 26, 2016Applicant: Andritz Fiedler GmbHInventors: THOMAS MICKELAT, MICHAEL REINSTEIN
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Publication number: 20130119175Abstract: An element for a drum-shaped comminuting track in a comminuting machine through which gas flows and which has a rotating beater wheel system, the element including: a profile section including alternating ribs and grooves, and a distance section arranged successively in a material flow direction (F) or axial direction, and the ribs include curved profile edges arranged at a material inlet side at an angle (?) or at a material outlet side at a different angle (?) with respect to a line perpendicular to a symmetry axis of the element.Type: ApplicationFiled: November 8, 2012Publication date: May 16, 2013Applicant: Andritz Fiedler GmbHInventor: Andritz Fiedler GmbH
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Patent number: 8292086Abstract: The invention relates to a strainer apparatus, such as a strainer basket, a strainer cylinder and the like, wherein slits or gaps are formed between strainer bars (6). The base of the strainer bars is received in receiving recesses (8) adapted to the dimensions of the base of the bars, in a support element (3). The support element can also be a reinforcing or strengthening element, and the strainer bars (6) are permanently fixed to the respective support element (3). At least one pocket (10, 11) that can be filled with a filler material is provided between each support element (3) and each associated strainer bar (6), at least on the edge region (7) of the respective receiving recess (8).Type: GrantFiled: April 1, 2008Date of Patent: October 23, 2012Assignee: Andritz Fiedler GmbHInventors: Thomas Mickelat, Christoph Tichy
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Publication number: 20100072113Abstract: The invention relates to a strainer apparatus, such as a strainer basket, a strainer cylinder and the like, wherein slits or gaps are formed between strainer bars (6). The base of the strainer bars is received in receiving recesses (8) adapted to the dimensions of the base of the bars, in a support element (3). The support element can also be a reinforcing or strengthening element, and the strainer bars (6) are permanently fixed to the respective support element (3). At least one pocket (10, 11) that can be filled with a filler material is provided between each support element (3) and each associated strainer bar (6), at least on the edge region (7) of the respective receiving recess (8).Type: ApplicationFiled: April 1, 2008Publication date: March 25, 2010Applicant: Andritz Fiedler GmbhInventors: Thomas Mickelat, Christoph Tichy