• 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:
    An apparatus and method are provided for treating flowing suspensions, extracting liquid from the suspensions and, if desired, introducing a treatment liquid into the flowing suspensions. Suspension flows in an elongated container from an inlet to an outlet in a first direction, and a screen surface is mounted within the container for screening a portion of the liquid from the suspension. The screen body is elongated in the direction of elongation of the container and defines a screen cavity volume within it, the volume tapering inwardly in the first direction. A baffle is disposed within the screen cavity volume. During movement of the screen in a second direction, opposite the first direction, at a higher speed, backflushing of the screen takes place, substantially evenly over the whole of the screen surface. Displacement liquid is introduced into the container, at at least one level along the inward taper of the screen body, so that during liquid extraction a crosswise displacement with treatment liquid is obtained through substantially all suspension flowing through the container. The container preferably has a vertical orientation, the inlet disposed above the outlet.
    公开号:SU1181556A3
    申请号:SU813225651
    申请日:1981-01-06
    公开日:1985-09-23
    发明作者:Якобсен Финн
    申请人:Камир Актиеболаг (Фирма)；
    IPC主号:
    专利说明:

    111 The invention relates to devices for the continuous extraction of liquid from current suspensions. A device is known for continuously extracting liquid from current suspensions, preferably cellulose pulp, comprising a housing for supplying axial suspension flow with inlet and outlet openings for suspension, at least one hollow lattice filter element placed in the housing on a support, equipped with an exhaust opening for extracted fluid and having the possibility of reciprocating movement through the shaft to change the volume of its cavity 1j. The disadvantage of this device is the low efficiency of the process. The purpose of the invention is to increase the efficiency of the process. The goal is achieved by the fact that the device for continuous screening. stratification of fluid from current suspensions, mainly cellulose pulp, containing a housing for supplying an axial suspension flow with suspension inlets and outlet openings, at least one hollow lattice filter element placed in a housing on a support, equipped with an outlet for the extracted liquid and having the possibility of reciprocating movement by means of a shaft for changing the volume of its cavity, has an annular partition installed in the cavity of a lattice filter along its surface, the larger base of which is oriented towards the suspension inlet, the filter element having a conical or wedge-shaped shape tapering in the direction of the axial flow of the suspension. t The partition has the shape of a paraboloid of rotation. . The device has means for supplying and distributing fluid to the housing, mounted ho its perimeter and arranged one behind the other in the direction of movement of the suspension. Figure 1 shows the device, a general view; Fig. 2 shows an embodiment of the device; Fig. 3 shows an embodiment of an annular partition. 6 The device comprises a housing 1 for supplying axial suspension flow with sealing covers 2 and 3 and inlet 4 and outlet 5 suspension openings. On the support 6, in the housing 1, a lattice filter element 7 is placed, provided with an outlet 8 for the extracted liquid. The lattice filtering element 7 has an internal cavity 9 at one end, supported by the seal 10, and another 11 at the other end. The support 6 is attached to the lid 2. In the cavity 9 of the lattice filtering element 7, an annular partition 12 is installed along its surface, the larger base of which is oriented side of the inlet 4 suspensions. The annular partition 12 has the shape of a paraboloid of rotation. The filter element 7 has a conical or wedge-shaped shape, narrowing in the direction of the axial flow of the suspension. The annular partition 12, with its narrow part 13, is connected to the shaft 14, which through the seal 15 can be moved reciprocally from the drive mechanism 16, which can be hydraulic or pneumatic. Scraper mechanism 17 is placed in housing 1 near outlet 5, rotating by means of a drive mechanism 18 and shaft 19. The latter rotates in suspension through a seal 20, transferring it in the direction of outlet 5. Along the perimeter of housing 1 in the direction of movement of the suspension the means for supplying and distributing the liquid in the form of inlet openings 21 and 22. The liquid is distributed inside the housing 1 by means of partitions 23 and 24 and flows into the suspension at the lower edge of the lattice filter element 7. P ssto between the inlets 21 and 22 may be selected so that the liquid which is added to the inlet 21 when the slurry reaches the inlet 22, replaces the initial liquid in the slurry. The fluid that is then added to the inlet 22 may, in turn, before the suspension leaves the device through the outlet 5, replace the liquid that was added to the first inlet 21, etc.
    Figure 2 shows that the device 5 has two drive mechanisms 16, each of which has an E-seal 15 and a shaft 14. Both shafts 14 are connected to a lattice filter element 7. Inlet Hole 4 for suspension 10 is located in the raised part 25 of housing 1 which also contains the scraper mechanism 17.
    The annular partition 12 (FIG. 3) has an open rear section 26 and is attached to the shaft 14 by means of a rib 27. Since the annular partition 12 is filled with liquid, in this case it serves as a distribution partition plate for the liquid. During the movement of the plate, the fluid enclosed in it also moves, and the total mass, which is to be accelerated and moved along with the lattice filter element 7, becomes larger.
    sixteen
    18
    Fig. {
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    sixteen
    fub.S
    权利要求:
    Claims (3)
    [1]
    1. DEVICE FOR CONTINUOUS Γ 0Γ0 EXTRACTION OF LIQUID FROM CURRENT SUSPENSIONS, mainly cellulose-fiber mass, containing a housing for supplying axial flow of the suspension with inlet and outlet openings for the suspension, at least one hollow grating filter element placed in the housing on the support, provided with an outlet fluid and having the possibility of reciprocating movement by means of a shaft to change the volume of its cavity, characterized in that, in order to increase the effect ivnosti process, it has an annular partition installed in the cavity of the filter element of the grill along its surface, the larger base of which is oriented towards the inlet for the suspension, wherein the filter element has a conical or wedge. tapering in the direction of the axial flow of the suspension.
    [2]
    2. The device according to π. 1, characterized in that the partition has the shape of a paraboloid of revolution.
    [3]
    3. The device according to claims 1 and 2, characterized in that it has means for supplying and distributing liquid on the housing, installed around its perimeter and located one after the other in the direction of movement of the suspension.
    ™ SU. „1181556
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    同族专利:
    公开号 | 公开日
    AT380405B|1986-05-26|
    US4535497A|1985-08-20|
    FR2473343B1|1984-04-27|
    DE3046969A1|1981-09-03|
    ATA622180A|1985-10-15|
    CA1153962A|1983-09-20|
    NO155501B|1986-12-29|
    NO155501C|1987-04-08|
    FI68686C|1985-10-10|
    BR8100094A|1981-07-21|
    NO803627L|1981-07-13|
    FR2473343A1|1981-07-17|
    DE3046969C2|1983-01-27|
    FI68686B|1985-06-28|
    FI803729L|1981-07-11|
    US4368628A|1983-01-18|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE858539C|1950-11-07|1952-12-08|Heinz Dipl-Volksw Hoening|Method of operating a thickener|
    DE1091535B|1958-09-26|1960-10-27|Yarrow And Company Ltd|Backwashable filter system|
    US3475271A|1966-02-07|1969-10-28|Kamyr Ab|Cellulose digester with washing apparatus|
    NO125495B|1966-10-27|1972-09-18|Kamyr Ab|
    SE330323B|1968-01-19|1970-11-09|Kamyr Ab|
    US3557583A|1968-09-10|1971-01-26|Improved Machinery Inc|Pulp strainer|
    HU171129B|1974-09-20|1977-11-28|Laszlo Kocsanyi|Apparatus for thickening sludge|
    SE394822B|1975-04-15|1977-07-11|Kamyr Ab|METHOD AND DEVICE FOR DRAINING MOVEMENT SUSPENSIONS|
    SE394821B|1975-04-15|1977-07-11|Kamyr Ab|METHOD AND DEVICE FOR DRAINING MOVEMENT SUSPENSIONS|SE426607B|1982-03-29|1983-01-31|Kamyr Ab|WANT TO TREAT A MASS PENSION SUSPENDED ALONG A BORN MIDDLE REPRESENTATION OF THE MASS SUSPENSION FLUID WITH ONE OR MORE REPLACEMENT WETS|
    US4900430A|1985-09-20|1990-02-13|Kamyr, Inc.|Screen cleaning in CIL and CIP systems|
    US4955482A|1985-09-20|1990-09-11|Kamyr, Inc.|Screen cleaning in cil & cip systems|
    US4944167A|1987-11-27|1990-07-31|Kamyr Ab|Backflushing pressure diffuser screens|
    US4908896A|1987-11-27|1990-03-20|Kamyr Ab|Backflushing pressure diffuser screens|
    US4881286A|1987-11-27|1989-11-21|Kamyr Ab|Effective diffuser/thickener screen backflushing|
    US5021127A|1987-12-01|1991-06-04|Kamyr, Inc.|Extended delignification in pressure diffusers|
    SE462435B|1988-11-11|1990-06-25|Kamyr Ab|MAKE STABILIZING THE PRESSURE AND LIQUIDIZATION COUNTRIES IN A SILVER AND SILVER DEVICE|
    US5183536A|1990-12-17|1993-02-02|Kamyr, Inc.|Atmospheric diffuser improved lower screens backflushing|
    US5567279A|1991-04-16|1996-10-22|Ahlstrom Machinery Inc.|Variable stage pressure diffuser|
    US5567262A|1991-04-16|1996-10-22|Ahlstrom Machinery Inc.|Two stage pressure diffuser|
    US5567461A|1994-05-09|1996-10-22|Robert Lehrer Associates, Inc.|Method of treating fluids with a filter|
    SE503071C2|1994-07-04|1996-03-18|Kvaerner Pulping Tech|Continuous pulp wash diffuser including annular hydraulic cylinders|
    US5444884A|1994-07-15|1995-08-29|Kamyr, Inc.|Controlling screen backflush and wash distribution in a pressure diffuser|
    WO1997002087A1|1995-06-30|1997-01-23|Pall Corporation|Separation systems and methods|
    US5667682A|1995-10-25|1997-09-16|Water Renewal Systems L.P.|Self-cleaning filtration apparatus|
    SE509152C2|1997-04-07|1998-12-07|Kvaerner Pulping Tech|Diffuser with floating body|
    SE9901668A0|1998-05-07|2000-11-07|J Robert Prough|Plate diffuser for treating comminuted cellulosic fibrous material|
    SE531514C2|2007-09-17|2009-05-05|Ebbe Hoden|Method and apparatus for dewatering a fiber suspension supplied by a nozzle assembly|
    SE531513C2|2007-09-17|2009-05-05|Ebbe Hoden|Method and apparatus for dewatering a fiber suspension in a vertical elongated container formed by two endless wire ribbons|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE8000198A|SE435401B|1980-01-10|1980-01-10|Device for continual take-off of liquid from flowing suspensions|
    SE8000196A|SE440802B|1980-01-10|1980-01-10|Apparatus for deduction and displacement of liquid from suspensions in stirring|LV920546A| LV5305A3|1980-01-10|1992-12-29|Device for continuous fluid extraction from the plush suspension|
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