EP3315662A1 - Agencement de boîtier pour un raffineur - Google Patents

Agencement de boîtier pour un raffineur Download PDF

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Publication number
EP3315662A1
EP3315662A1 EP17197922.2A EP17197922A EP3315662A1 EP 3315662 A1 EP3315662 A1 EP 3315662A1 EP 17197922 A EP17197922 A EP 17197922A EP 3315662 A1 EP3315662 A1 EP 3315662A1
Authority
EP
European Patent Office
Prior art keywords
outer housing
housing
arrangement according
opening
housing arrangement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP17197922.2A
Other languages
German (de)
English (en)
Other versions
EP3315662B1 (fr
Inventor
Detlef Krug
Marco MÄBERT
Werner Teufel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IHD Institut fuer Holztechnologie Dresden gGmbH
Original Assignee
IHD Institut fuer Holztechnologie Dresden gGmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by IHD Institut fuer Holztechnologie Dresden gGmbH filed Critical IHD Institut fuer Holztechnologie Dresden gGmbH
Priority to PL17197922T priority Critical patent/PL3315662T3/pl
Publication of EP3315662A1 publication Critical patent/EP3315662A1/fr
Application granted granted Critical
Publication of EP3315662B1 publication Critical patent/EP3315662B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D1/00—Methods of beating or refining; Beaters of the Hollander type
    • D21D1/20—Methods of refining
    • D21D1/30—Disc mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C7/00—Crushing or disintegrating by disc mills
    • B02C7/02—Crushing or disintegrating by disc mills with coaxial discs
    • B02C7/06—Crushing or disintegrating by disc mills with coaxial discs with horizontal axis

Definitions

  • the invention relates to a housing arrangement for a refiner, in particular for a disc refiner for the production of lignocellulosic fibers from wood.
  • Refiners are machines that are used for the technological production of fiber material by defibration of wood.
  • the industrial production of lignocellulosic wood pulps takes place in a continuous process. This begins with the hydrothermal pretreatment of woodchips in a pre-dam, where they are heated to 70 ° C to 80 ° C. From the pre-damper, the wood chips arrive via a transport and dewatering screw into the preheater in which they are plasticized with steam at a temperature, for example above 160 ° C and a pressure of 6 bar - 10 bar for several minutes. A second plug screw and a screw conveyor transport the pretreated woodchips for defibration into the refiner.
  • the pretreated woodchips between fiber discs of the rotor and stator at a rotational speed of the rotor of 3000 revolutions per minute are defibrated.
  • the fibers then pass from the annulus or collecting channel - accelerated by driver and vapor pressure - via a radial outlet for further processing in the blowline.
  • the quality of the fiberization depends on various factors. On the one hand, the defibration is influenced by the type of pretreatment. On the other hand, the conditions inside the refiner, such as the The nature and dimensioning of the grinding discs, the width of the grinding gap or the power input on the quality of the defibration. For a consistent fiberizing quality is therefore necessary to create as constant as possible conditions in the refiner. Due to the high speeds and pressures of up to 14 bar, however, the components of the refiner are subject to relatively high wear loads, resulting in a high maintenance outlay. For example, refiners from known manufacturers require replacement of worn grinding discs at an interval of 2 to 6 weeks.
  • the object of the invention is now to propose a housing arrangement for a refiner, with the adaptation of housing dimensions according to required process conditions for defibration is possible.
  • the housing arrangement according to the invention for a refiner comprises a first outer housing element designed to receive a stator grinding disk, which has at least one first opening for a material inlet, and a second outer housing element designed to receive a rotor grinding disk, which can pivot with an articulated spacer element on the first outer housing element is coupled, that the outer housing elements between an open and a closed position are movable.
  • the housing arrangement according to the invention comprises a cavity element having at least one material outlet, which can be arranged for housing the stator washer and the rotor grinding disk in an open position between the first outer housing element and the second outer housing element, the first outer housing element and the second outer housing element having means for fixing and clamping the cavity member in the closed position.
  • the core of the invention is a modular refiner housing arrangement which is formed with two outer housing elements and a cavity element which can be arranged between the outer housing elements. Characterized in that the outer housing elements are movable between an open and a closed position, it is possible to arrange and fix between the outer housing elements cavity elements of different dimensions. Modifications of a grinding space between the outer housing elements can thus be achieved in a simple manner by an exchange of the cavity element. This allows flexible adaptation of the refiner housing to changing process conditions or adaptation to the material to be fiberized and the fiber quality. A further advantage is that when damaged only that of the damage affected housing element must be replaced without replacement or disassembly of the entire refiner housing is required.
  • the refiner housing is designed to receive a stator grinding wheel and a rotor grinding wheel, wherein the rotor grinding wheel is coupled to a driven rotor shaft.
  • the stator washer is non-rotatably attached to the first outer housing member. Both grinding disks can be formed with several grinding disk segments.
  • An open position of the outer casing members denotes an arrangement of the outer casing members, in which sufficient space for arranging a cavity member is provided between the outer casing members.
  • a closed position indicates an arrangement, preferably parallel arrangement of the outer housing elements, wherein between the outer housing elements, a cavity element is enclosed.
  • the cavity element is a tubular, preferably cylindrical housing element. Adjustments of the cavity element, which defines the grinding chamber according to its configuration, are conceivable with regard to the size, the length, the shape of the cross-sectional area or a change in the cross-sectional geometry in the longitudinal direction and the arrangement of the material outlet. In a rotationally symmetrical embodiment of the cavity element, an arrangement of a material outlet formed in the lateral surface of the cavity element can be changed by simply rotating the cavity element. Furthermore, it can be provided that the cavity element has at least one tangential and / or at least one radial material outlet opening.
  • At least one groove and / or at least one spring may be formed on the inner opposite sides of the outer housing elements. Bordering the cavity element into a groove has the advantage of sealing the grinding chamber subjected to pressure during operation. Conveniently, a groove and / or spring may also be formed on the end face of the cavity element.
  • the inner opposite sides of the outer housing elements on a plurality of grooves and / or springs of different diameters in order to fix and to be able to enclose between the outer housing elements cavity elements of different diameters.
  • the outer housing elements may be screwed at their outer ends.
  • a screw connection may be provided at the outer corners in each case.
  • the screw connections may have spacer sleeves to maintain a predetermined distance between the inner surfaces of the outer housing elements.
  • the design of the screw is subject to no restriction.
  • the screw can be formed with a screw connection, a screw-nut connection or a threaded bolt-nut connection to connect the outer housing elements together and clamp the fluid arranged between the outer housing elements cavity member.
  • a plurality of holes may be arranged around the first opening, which is provided for a material inlet. These may be simple blind holes in which the stator disc or the grinding disc segments are held with bolts.
  • a screw fastening can be provided, wherein the holes have threads.
  • the mounting holes are designed as through holes to allow attachment from the outside.
  • At least three Justagesurchbrechungen are formed in the first outer housing element, each having an adjusting screw for aligning an inside mounted stator disc or inside grinding disc segments.
  • the first housing element may have a receptacle or recess for fastening a feed screw.
  • the receptacle or recess is formed on the outside of the first housing element.
  • the second outer housing element can have a second opening for receiving a rotor shaft.
  • the rotor shaft is mounted outside the refiner housing or on the outside of the second outer housing member is a bearing for supporting the rotor shaft.
  • it can be provided that in the second opening a bearing is enclosed for supporting the rotor shaft.
  • the second outer housing element can have at least one third opening as a mounting opening, via which tool accessibility from the outside is ensured. Thereby, a further reduction of the time required is possible because in addition to the opening / closing of the housing assembly several assembly / disassembly steps can be performed simultaneously. Due to the pressure prevailing during operation of the Refinergepuruses in the outer Housing elements formed openings and openings provided with corresponding covers.
  • the first material inlet opening formed in the first outer casing member may be arranged to be concentric with the center axis of the rotor grinding disk or concentric with the second opening of the second outer casing member in the closed position. This ensures that the supplied material for fiberization in operation passes directly to the central axis of rotation of the rotor wheel disc and can be accelerated uniformly.
  • the first and / or the second outer housing element may comprise guide pins along which the outer housing elements are movable parallel to each other in the open position or in the closed position.
  • the guide pins allow a variable adjustment of the distance between the outer housing elements, so that cavity elements of different lengths can be used.
  • Another advantage of the guide pin is that the outer housing elements when moving to the open position initially slightly offset from each other or can be pulled apart, so that the distance between the outer housing elements initially only slightly increased, the cavity element of a groove or groove Spring connection can be moved out without being completely dissolved out of the housing assembly.
  • the articulated spacer element can also be designed to be displaceable. This can be achieved, for example, in that the articulated spacer element is formed with oblong holes or guide grooves, along which the articulated spacer element is displaceable.
  • the first outer housing element may be guided in a guide on the articulated spacer element, wherein the guide allows a change in the distance between the parallel oppositely disposed outer housing elements.
  • the guide may have adjusting screws with which the distance between the parallel outer housing elements is adjustable.
  • the second outer housing element is pivotably coupled to an articulated spacer element on the first outer housing element, in order to ensure the largest possible opening angle between the outer housing elements in the open position.
  • the articulated spacer element may be formed with a hinge attached to a plate as a spacer.
  • the articulated spacer element may also have two joints in order to achieve the highest possible flexibility for moving the outer housing elements.
  • the housing arrangement according to the invention is suitable for refiners, in particular disc refiners for the production of lignocellulosic fibers from wood chips according to the procedure described above.
  • FIG. 1 shows a perspective view of an embodiment of the housing assembly according to the invention for a refiner without cavity element in an open position.
  • the reference numeral 1 denotes a first outer case member which is formed to receive a stator washer (not shown).
  • the first outer housing element 1 has a square shape, wherein in the middle of an opening for a material inlet 2 is formed. Between a first annular elevation 4, which is formed in a further development of the opening for the material inlet 2, and a second annular elevation 5, an annular recess 7 for the arrangement of a stator disc or grinding disc segments is formed.
  • a plurality of mounting holes 3 are arranged in the recess 7 around the opening for a material inlet 2 for fixing a stator grinding disk or for fastening Mahlusionnsegmenten the stator disc.
  • the mounting holes 3 are made with a thread.
  • the mounting holes 3 may also be designed as through holes, so that an attachment or a release of the stator grinding disk or the Mahlusionnsegmente from the outside is possible.
  • the reference numeral 17 three Justagesurchbrechungen are marked, which serve to align the stator stator disk or the Mahlusionnsegmente mounted on the inside.
  • 17 adjusting screws are screwed into the Justagesurchbrechungen that exert pressure when rotating against the inside mounted (n) Statormahlin or Mahlusionnsegmente so that the stator or the Mahlusionnsegmente can be aligned as planar as possible / can.
  • annular groove 6 for receiving a cavity element (not shown in the example) is formed in the inner side 8 of the outer housing element 1.
  • the annular groove 6 and the annular elevation 5 together form a pin on which the cavity element (not shown) can be held independently on the outer housing element 1.
  • further openings 11 as screw guides for fixing the housing assembly in a closed position ( FIG. 3 ) educated.
  • Reference numeral 9 designates a second outer housing element designed to accommodate a rotor wheel, which is coupled to an articulated spacer element 10 on the first outer housing element 1.
  • the articulated spacer element 10 is a hinge, which is fastened with a spacer plate to a side surface of the second outer housing element 9, so that the first outer housing element 1 can be pivoted like a door.
  • the spacer plate can have elongated holes, via which the spacer element 10 is attached to the second outer housing element 9, so that the distance between the outer Housing elements 1 and 9 can be varied by moving along the slots.
  • a circular recess 12 is formed on the inner surface 13 of the second outer housing member 9, a circular recess 12 is formed. Since the recess 12 serves for receiving or for enclosing a cavity element, its diameter can be suitably adapted to the diameter of the annular groove 5.
  • the first outer housing element 1 may have at least two preferably a plurality of annular grooves 5 of different diameters. Accordingly, the circular recess 12 of the second outer housing element 9 can likewise be designed as an annular groove with corresponding diameters.
  • a second aperture 14 is further formed in the second outer housing member 9 as a passage or for receiving a rotor shaft of the rotor grinding wheel or a segment carrier for a rotor wheel.
  • the arrangement of the second aperture 14 is chosen so that the first opening for a material inlet 2 and the second aperture 14 are concentrically aligned in a closed position of the outer housing elements 1 and 9.
  • a bearing for supporting a corresponding rotor shaft in the second opening 14 may be enclosed to reduce friction.
  • the bearing for the rotor shaft is located outside the housing arrangement
  • a third opening in the second outer housing member 9 is formed in a relation to the second aperture 14 eccentric arrangement.
  • the third opening 15 serves as a mounting opening, via which tool accessibility to a grinding disk or a segment carrier of the grinding disk can be ensured from the outside, that is, from an outer side of the second outer housing element 9.
  • the second outer housing member 9 on its inner side 13, two, in the example shown diagonally arranged threaded holes 24 which are provided as an assembly aid for fixing or fixing a cavity member.
  • the second outer housing member 9 each having a female spacer sleeve 16, wherein the spacer sleeves are arranged so that they are arranged in a closed position of the outer housing elements 1 and 9, in which the outer housing elements 1 and 9 in parallel , correspond to the openings 11 of the first outer housing element 1.
  • the spacers 16 may be screwed to vary the distance between the outer housing elements 1 and 9 accordingly or to be able to compensate for unequal distances.
  • the spacers are formed without internal thread, the spacers serve as feedthroughs for screws or threaded bolts, so that the outer housing elements 1 and 9 can be screwed together on the outside.
  • FIG. 2 shows a perspective view of the embodiment of the housing assembly according to the invention FIG. 1 with a cavity member 18 in an open position.
  • the cavity element 18 is a cylindrical housing element whose end faces are each formed such that it is enclosed on one side in the annular groove 6 of the first outer housing element 1 and on the opposite side by the annular recess 12 of FIG second outer housing element 9 is enclosed.
  • Reference numerals 19.1 and 19.2 each denote a material outlet opening, wherein the material outlet opening 19.1 is a radial outlet opening and the material outlet opening 19.2 is a tangential outlet opening for Fiber material is. Both material outlet openings 19.1 and 19.2 have a flange for connection to a further pipeline.
  • the cavity member 18 defined by its shaping and dimensioning in its interior, the grinding chamber for a defibration of supplied material.
  • the main advantage is the interchangeability of the cavity member 18, since this gives the possibility to adjust the grinding chamber in terms of size, length, the shape of the cross-sectional area or a change in the cross-sectional geometry in the longitudinal direction and the arrangement of a material outlet 19.1 or 19.2 to different requirements ,
  • FIG. 2 the cavity member 18 on the outside two diagonally disposed tabs 20, via which the cavity member 18 is secured with a screw fastening in the threaded holes 24 on the second outer housing member 9.
  • FIGS. 3a / 3b each show a perspective view of the embodiment of the housing assembly according to the invention FIG. 1 with cavity member 18 in a closed position, wherein the outer housing elements 1 and 9 are arranged parallel opposite one another with four screws 21 which are inserted through the screw guides 11 in each of the spacer sleeves 16, and thereby clamp the cavity member 18.
  • the reference numeral 22 designates a circular recess formed in the outer surface (23) for receiving a feed screw (not shown) with which the material to be shredded can be conveyed via the material inlet opening 2 into the grinding chamber.
  • the first outer housing element 1 is guided in a guide 25 on the articulated spacer element 10, wherein a movement of the first outer housing element 1 along the guide 25 a distance change between allows the outer housing elements 1 and 9.
  • the guide 25 adjusting screws 26, with which the distance between the outer housing elements 1 and 9 is adjustable.
  • the housing arrangement is in the closed position, so that a distance 27 is formed between the first outer housing element 1 and the guide 25 of the articulated spacer element 10.
  • the first outer housing element 1 when opening the housing assembly are first moved so that the distance between the housing elements increases uniformly, with the distance 27 between the first outer housing member 1 and the guide 25 is reduced before the first outer housing element 1 as a door can be opened.
  • the housing arrangement according to the invention for a refiner is to be dimensioned with regard to the material selection and / or wall thicknesses of the outer housing elements 1, 9 and the cavity element 18, taking into account the process parameters required for defibration of woodchips.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Paper (AREA)
EP17197922.2A 2016-10-26 2017-10-24 Agencement de boîtier pour un raffineur Active EP3315662B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL17197922T PL3315662T3 (pl) 2016-10-26 2017-10-24 Układ obudowy do młyna stożkowego

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016120407.2A DE102016120407B4 (de) 2016-10-26 2016-10-26 Gehäuseanordnung für einen Refiner

Publications (2)

Publication Number Publication Date
EP3315662A1 true EP3315662A1 (fr) 2018-05-02
EP3315662B1 EP3315662B1 (fr) 2019-02-27

Family

ID=60182397

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17197922.2A Active EP3315662B1 (fr) 2016-10-26 2017-10-24 Agencement de boîtier pour un raffineur

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EP (1) EP3315662B1 (fr)
DE (1) DE102016120407B4 (fr)
PL (1) PL3315662T3 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006022886A1 (de) * 2006-05-15 2007-11-22 Pallmann Maschinenfabrik Gmbh & Co Kg Vorrichtung zum Zerkleinern von Aufgabegut
EP2182109A2 (fr) * 2008-10-31 2010-05-05 Metso Paper Inc. Procédé de fabrication de raffineur, et raffineur
EP2460933A1 (fr) * 2010-12-06 2012-06-06 Seed Co. Ltd. Dispositif pour la fabrication de la pâte à papier d'un appareil pour recycler le papier usé et appareil pour recycler le papier usé

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1246370B (de) * 1964-04-11 1967-08-03 Voith Gmbh J M Muehle, insbesondere zum Aufbereiten von Faserstoffen
US3276701A (en) * 1964-04-15 1966-10-04 Sprout Waldron & Co Inc Attrition mill apparatus
US3893631A (en) * 1974-07-17 1975-07-08 Sprout Waldron & Co Inc Twin refiner with double floating discs

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006022886A1 (de) * 2006-05-15 2007-11-22 Pallmann Maschinenfabrik Gmbh & Co Kg Vorrichtung zum Zerkleinern von Aufgabegut
EP2182109A2 (fr) * 2008-10-31 2010-05-05 Metso Paper Inc. Procédé de fabrication de raffineur, et raffineur
EP2460933A1 (fr) * 2010-12-06 2012-06-06 Seed Co. Ltd. Dispositif pour la fabrication de la pâte à papier d'un appareil pour recycler le papier usé et appareil pour recycler le papier usé

Also Published As

Publication number Publication date
PL3315662T3 (pl) 2019-09-30
DE102016120407A1 (de) 2018-04-26
EP3315662B1 (fr) 2019-02-27
DE102016120407B4 (de) 2018-10-04

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