• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Method and apparatus for refining fiberous material in a disc refiner for withdrawing steam developed during refining of such fiberous material. The disc refinger comprises a pair of refining discs each of which includes a inner refining surface. The refining discs are mounted for rotation relative to one another in a housing with the refining surfaces opposing one another during the relative rotation and defining a refining space therebetween. Each of the refining surfaces of the refining discs is provided with a passageway for withdrawing steam developed in the refining space. The passageways extend from the respective refining surfaces in a direction away from the refining space and radially inward relative to the direction that the fiberous material moves through the refining space.
    公开号:SU837331A3
    申请号:SU782665547
    申请日:1978-09-22
    公开日:1981-06-07
    发明作者:Руне Хеллерквист Густав
    申请人:Ска Дивелопмент Актиеболаг (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to disk mills of fibrous cellulosic material and is used in the pulp and paper industry.
    Known disk mill of fibrous cellulose-containing material, including grinding disks with grinding segments installed in the housing, a channel for diverting na- | Q ra from the area between the grinding disks into the mill housing and the drive [1].
    A disadvantage of the known mill is that it does not provide passage between the disks, _ a fairly uniform flow of material.
    The purpose of the invention is to improve the grinding quality by ensuring that the disks pass through the disks with a uniform flow of material.
    The goal is achieved by the fact that the grinding segments are made with grooves directed at an angle to the plane of the disk, and are fixed on each 25 disk with a fixed gap, forming, together with the grooves, a channel for removing steam from the area between the grinding disks into the mill body. Moreover, the grooves form an angle of 30-60 ° with the plane of the disk, are located on a circle concentric with the disk, and the grinding segments have protrusions in the area of the inlet openings of the grooves.
    In FIG. 1 shows a longitudinal section of a disk mill; in FIG. 2 and 3 - two options for performing grinding disks.
    The mill contains a feeding device 1, a housing 2, grinding disks 3 and 4. The disk 3 is provided with an inlet 5 for supplying material. The disks are equipped with grinding segments 6 and 7 and form 4 zone 8 between them. The segments are made with grooves 9 directed at an angle to the plane of the disk and fixed on each disk with a fixed gap 10, which forms a channel for removing steam from the aeon 8 along with the grooves into the mill body. The grooves 9 form an angle οί · 30-60 ° with the plane of the disk; they can be located around a circle concentric to the disk. The grinding segments have protrusions 11 located in the area of the inlet openings of the stitches. The disk drive is not shown in the drawing.
    The mill operates as follows.
    The feed device I directs the material through the inlet 5 to zone 8. When grinding, most of the vapor generated in the aeon 8 passes through the grooves 9, as a result of which the undesirable effect of steam on the process is reduced. The amount of steam passing through the grooves should preferably be equal to the amount of steam passing through zone 8. As a result of the removal of steam through the grooves 9 and the gap 10 into the mill body, the temperature in zone 8 decreases, the space for the fibrous material increases and the vibration 15 decreases. This improves the grinding quality.
    权利要求:
    Claims (4)
    [1]
    The mill works as follows. The feeding device I guides the material through the inlet 5 to zone 8. When grinding, most of the steam formed in zone 8 passes through the grooves 9, as a result of which the undesirable effect of steam on the process is reduced. The amount of steam / passing through the grooves should preferably be equal to the amount of steam passing through zone 8. As a result of removing steam through the grooves 9 and the gap 10 into the mill body, the temperature in zone 8 decreases the space for the fibrous material and the vibration decreases. This is the quality of grinding. Claim 1. Disk mill of fibrous cellulose-containing material, which includes grinding discs installed in the housing with grinding segments, channel for removal of steam from the grinding wheels to the mill housing and drive, about 1 and./ that, in order to improve the quality of grinding by ensuring that a uniform flow of material passes between the disks, the grinding segments are made with grooves directed at an angle to the disk plane and fixed on each disk with a fixed gap, forming together with the grooves a channel DL9 for removal of steam from the zone by grinding discs into the body, mills ..,
    [2]
    2. The mill according to claim 1, about t l and so that the grooves form an angle of 30.60 with the plane of the disk.
    [3]
    3. Mill according to claim 1, characterized in that the grooves are arranged in a circle concentric with the disk.
    [4]
    4. Mill according to claim 1, characterized in that the grinding segments have protrusions located in the area of the inlet openings of the grooves. Sources in5) Formations taken into account in the examination. 1. Swedish patent 371654, cl. D 21 D 1/30, 1974.
    类似技术:
    公开号 | 公开日 | 专利标题
    SU837331A3|1981-06-07|Disc mill for fibrous cellulose-containing material
    US4676440A|1987-06-30|Disc cutter with exhaust channels
    KR20080106029A|2008-12-04|Refiner plates having steam channels and method for extracting backflow steam from a disk refiner
    CA2239337C|2005-02-08|Refining element
    NZ189683A|1982-12-21|Pulp defibrator grinding space between discs comprises two zones one inclined to the other
    US5335865A|1994-08-09|Two-stage variable intensity refiner
    US4754935A|1988-07-05|Method and apparatus for refining fibrous material
    US4401280A|1983-08-30|Disc-type pulp refining apparatus
    US3459379A|1969-08-05|Mechanical pulping apparatus
    US3942729A|1976-03-09|Device for supplying treatment agent to ligno-cellulose containing material
    US4423845A|1984-01-03|Refiner plates
    US4819881A|1989-04-11|Refiner for processing a fiber stock suspension for paper fabrication
    US3387796A|1968-06-11|Defibrating device
    SE8105217L|1982-03-09|SET AND APPARATUS FOR REFINING FIBER MATERIAL IN A DISC TYPE REFINER
    CA2438653C|2008-12-09|A pair of opposed co-operating refining elements
    US4111373A|1978-09-05|Apparatus for defibering conglomerates of fiber in fibrous suspensions, especially in the processing of mixed waste paper
    RU2005121443A|2007-01-20|DISK REFINER |, A Pair of REFINING ELEMENTS FOR DISK REFINER |, COMBINED DISK REFINER PLATE AND METHOD FOR THERMOMECHANICAL REFINING OF WOOD CHIP
    FI127628B|2018-10-31|Single-disc refiner
    US4396161A|1983-08-02|Disk refiner
    US7648090B2|2010-01-19|Disc housing
    US4163525A|1979-08-07|Device for evacuating blow-back steam in pulp refining apparatus
    KR860001616B1|1986-10-14|A multiple disk refiner for low consistency refining of mechanical pulp
    US3523649A|1970-08-11|Disc grinding apparatus
    ES8507640A1|1985-10-01|Flexible disk refiner and method of reducing particulate material.
    US3321809A|1967-05-30|Papermaking machine stock distributor apparatus
    同族专利:
    公开号 | 公开日
    JPS578240B2|1982-02-15|
    FI62368B|1982-08-31|
    NO782653L|1979-04-02|
    FI782398A|1979-03-31|
    AU3931978A|1980-03-06|
    FI62368C|1982-12-10|
    FR2404707A1|1979-04-27|
    US4221631A|1980-09-09|
    JPS5450601A|1979-04-20|
    SE418309B|1981-05-18|
    ATA565078A|1980-12-15|
    NZ188339A|1982-03-30|
    SE7710948L|1979-03-31|
    FR2404707B1|1981-01-09|
    DE2839390A1|1979-04-05|
    CA1079559A|1980-06-17|
    AT363313B|1981-07-27|
    BR7806453A|1979-04-24|
    DE2839390C3|1981-09-10|
    AU513906B2|1981-01-15|
    DE2839390B2|1980-09-18|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    RU2489212C2|2007-12-06|2013-08-10|Андритц Инк.|Devices for attachment of refiner plate for its fast replacement, method of its attachment and assembly|SE362671B|1972-05-09|1973-12-17|Sca Project Ab|
    SE371654B|1973-11-09|1974-11-25|Sca Project Ab|
    SU486101A1|1973-12-14|1975-09-30|Diskov mill|
    SE403916B|1975-06-04|1978-09-11|Rolf Bertil Reinhall|DEVICE FOR MILLING APPARATUS FOR LIGNOCELLULOSE-MATERIAL|US4401280A|1980-09-08|1983-08-30|Sunds Defibrator, Inc.|Disc-type pulp refining apparatus|
    US4537675A|1982-05-13|1985-08-27|In-Situ, Inc.|Upgraded solvents in coal liquefaction processes|
    SE463821B|1986-02-11|1991-01-28|Kamyr Ab|PROCEDURE TO REDUCE ENERGY CONSUMPTION BY REFINING A MIXTURE OR SUSPENSION OF FIBER MATERIAL|
    SE456748B|1986-04-10|1988-10-31|Kamyr Ab|PROCEDURE AND DEVICE FOR REFINING FIBER MATERIAL|
    US5047118A|1986-04-10|1991-09-10|Kamyr Ab|Method for decreasing energy consumption during refining of fiber material at a reduced grinding frequency while maintaining capacity|
    US5152871A|1986-04-10|1992-10-06|Kamyr Ab|Method for decreasing energy consumption during refining of fiber material while maintaining capacity|
    US4986480A|1989-06-29|1991-01-22|Kamyr Ab|Method and apparatus for feeding a conical refiner|
    US5248099A|1991-04-05|1993-09-28|Andritz Sprout-Bauer, Inc.|Three zone multiple intensity refiner|
    US5373995A|1993-08-25|1994-12-20|Johansson; Ola M.|Vented refiner and venting process|
    US5645690A|1996-09-11|1997-07-08|Westvaco Corporation|Pressure relief system for treating fibrous materials under pressure|
    US5988538A|1998-07-28|1999-11-23|J&L Fiber Services, Inc.|Refiner disc having steam exhaust channel|
    US6024308A|1998-11-11|2000-02-15|J&L Fiber Services, Inc.|Conically tapered disc-shaped comminution element for a disc refiner|
    US7347392B2|2005-02-28|2008-03-25|J & L Fiber Services, Inc.|Refiners and methods of refining pulp|
    US20130001334A1|2005-02-28|2013-01-03|Johansson Ola M|Refiners and methods of refining pulp|
    US8006924B2|2005-02-28|2011-08-30|J & L Fiber Services, Inc.|Refiner plate assembly and method with evacuation of refining zone|
    FI124393B|2008-06-19|2014-08-15|Valmet Technologies Inc|Grinders and Method for Grinding Fibrous Material and Steel Segment in Grinder for Grinding Fibrous Material|
    SE540681C2|2017-03-03|2018-10-09|Valmet Oy|Steam evacuation in a pulp or fiber refiner|
    SE541111C2|2017-06-19|2019-04-09|Valmet Oy|Steam evacuation in a pulp or fiber refiner|
    SE1751058A1|2017-09-01|2018-12-11|Valmet Oy|Refiner segment in a fiber refiner|
    SE543499C2|2020-02-12|2021-03-09|Valmet Oy|Center ring provided with wings|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE7710948A|SE418309B|1977-09-30|1977-09-30|SET AND DEVICE FOR REFINING FIBER MATERIAL IN A DISC REFINER|
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