• 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:
    A screen assembly is provided for the dewatering of flowing suspensions. A screen body having a perforated wall has a first slide bearing mounted at a first end thereof, and a second slide bearing mounted to a second end thereof. The screen body is mounted in a generally cylindrical container through which suspension to be dewatered flows in a first direction, and the screen slide bearings engage first and second bearing surfaces mounted interiorly of the container. The bearing surfaces have different effective cross-sectional areas. The screen between the first and second ends thereof and the bearing surfaces define a screen cavity volume, and a rod attached to a linear actuator moves the screen in the first direction, and in a second direction opposite the first direction, so that the cavity volume changes during movement of the screen. The screen and bearings may have any desired configuration or cross-sectional area.
    公开号:SU1291030A3
    申请号:SU813232346
    申请日:1981-01-09
    公开日:1987-02-15
    发明作者:Кьелл Фойн Торе
    申请人:Камир Актиеболаг (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to filtering devices for extracting liquids from current suspensions and can be used in the pulp industry to recover fibers from liquid solutions.
    The purpose of the invention is to increase the effective filter area.
    FIG. 1 shows the device section; in fig. 2 and 3 - options for the device.
    The filtering device for extirpating a liquid from the current suspension contains a housing 1 for axial flow of the suspension, located therein, in an extreme measure, one filter, the body 2 of which is provided with outlet openings for the filtered liquid and the front part 3 facing the inlet 4 aperture the casing 1 for the directional flow of the slurry stream is limited to flat sealing supports with supporting surfaces 5j and a reciprocating mechanism 6 for changing the volume of the cavity of the filter housing mounted on the mount The shaft 7 is fitted in the housing. The rear part of the filter housing is provided with sealing flat supports with supporting surfaces 8 installed at the periphery of the housing 1, and their cross-sectional area is larger than the cross-sectional area of the supports of the front part of the filter housing 2.
    The casing 1 can be made with a rectangular cross section, with the filter housing 2 having a rectangular cross section in a plane perpendicular to the plane of direction of movement of the slurry.
    The casing of the device has an outlet 9 and a flange 10 to which an elbow 11 is connected with an outlet 12.
    Inside the case there is a concentric sleeve 13, which forms an annular zone 14 between the sleeve and the case, bounded at the lower end by a ring 15. In zone 14 there is an outlet 16 for the liquid.
    The filtering device operates as follows.
    The slurry to be processed flows through the filtering means as indicated by the arrows. The filter housing 2 with flat sealing supports with support surfaces 5 and 8 is moved back and forth. Volume ring
    five
    0
    five
    0
    five
    0
    five
    0
    five
    zones 14 change (increase) when the filter housing 2 moves forward under the action of the reciprocating mechanism 6 in the direction of the slurry flow, and yes backward - the volume decreases. In this case, the liquid is drawn in from the suspension through the filter openings. This liquid is discharged from the zone through the outlet 16. As the filtering device is mainly intended for processing suspensions at elevated atmospheric pressure, the outlet openings are throttled using special tools (not shown) to obtain a corresponding pressure drop in the openings of the filter housing. When the filter housing moves against the direction of the slurry flow, the pressure inside the filter housing increases, the fluid flows back through the filter holes and countercurrently cleans the filter holes and at the same time facilitates the continuous movement of the suspension through the filter holes. The slurry moves uniformly through the device while the liquid is extracted from the slurry for some time and later sent back to the slurry in a smaller amount and for a short time, while also moving the filter housing forward and backward. output from the device through the outlet-1 her hole 16.
    Thus, a relatively large filtering surface can be obtained within the same diameter of the casing of the device. The same advantages are achieved in the design with a rectangular cross section of the casing and the filter housing.
    权利要求:
    Claims (2)
    [1]
    Invention Formula
    1, Filtering device for extracting liquid from the current suspension, containing a casing for axial flow of the suspension, at least one filter in it, in the casing of which outlet outlets for the filtered fluid are formed and the front part facing the inlet opening of the casing for directional flow suspensions, limited by sealing planes of their cross section, are larger than the cross section of the supports of the front part of the filter housing.
    mounts with support surfaces and a reciprocating mechanism for changing the volume of the cavity of the filter housing mounted on a shaft mounted in the housing, characterized in that, in order to increase the effective area of the filtering surface, the rear part of the filter housing is provided with additional sealing flat support -fO in the plane, parallel to the frame with the supporting surfaces, to the mechanism for accommodating the mechanism on the periphery of the casing, for the back and forth movement.
    [2]
    2. A device according to claim 1, about a tl, which is that the casing has a rectangular cross section, and the fil / ra case has a rectangular cross section,
    12910304
    than the area of their cross section is larger than the cross section of the cross section of the supports of the front part of the filter housing.
    It is about alo-fO, which is located in a plane parallel to the plane of the mechanism of the reciprocating and accessible displacement.
     It is placed in a plane parallel to the plane of placement of the reciprocating mechanism.
    2. A device according to claim 1, wherein the casing has a rectangular cross section, and the filter / / filter housing has a rectangular cross section, located 11
    HER
    Srig.G.
    Editor V.Kovtun
    Compiled by E. Petrushova
    TehredM.Khodanich Proofreader S.Shekmar
    Order 7921/60 Circulation 341 Subscription
    VNIIPI USSR State Committee
    for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5
    Production and printing company, Uzhgorod, Projecto st., 4
    .З
    类似技术:
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    同族专利:
    公开号 | 公开日
    ATA590480A|1983-12-15|
    SE435400B|1984-09-24|
    DE3043011A1|1981-07-23|
    FR2473342B1|1984-03-09|
    NO155500B|1986-12-29|
    JPS56102912A|1981-08-17|
    FI803559L|1981-07-11|
    NO803518L|1981-07-13|
    FI69660B|1985-11-29|
    CA1148095A|1983-06-14|
    NO155500C|1987-04-08|
    DE3043011C2|1982-08-05|
    SE8000197L|1981-07-11|
    US4396509A|1983-08-02|
    AT375419B|1984-08-10|
    FI69660C|1986-03-10|
    FR2473342A1|1981-07-17|
    JPS613525B2|1986-02-03|
    BR8100072A|1981-07-21|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2024753A|1933-09-06|1935-12-17|Zwicky Ltd|Filter|
    US3347386A|1964-09-09|1967-10-17|Jr Frederick Kraissl|Multiple element filter assembly|
    US3557583A|1968-09-10|1971-01-26|Improved Machinery Inc|Pulp strainer|
    US3530993A|1968-09-19|1970-09-29|Garland L Fulton|Strainer valves|
    SE394821B|1975-04-15|1977-07-11|Kamyr Ab|METHOD AND DEVICE FOR DRAINING MOVEMENT SUSPENSIONS|
    SE394822B|1975-04-15|1977-07-11|Kamyr Ab|METHOD AND DEVICE FOR DRAINING MOVEMENT SUSPENSIONS|
    DE2545684C3|1975-10-11|1978-10-26|Bayer Ag, 5090 Leverkusen|Backwash plate filter|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|
    SE452558B|1985-05-17|1987-12-07|Sea Parator Hb|SET AND DEVICE FOR SEPARATION OF BODIES FROM A FLUID|
    FI81137B|1986-12-17|1990-05-31|Ahlstroem Oy|FOERFARANDE OCH ANORDNING FOER URVATTNING AV FIBERSUSPENSIONER.|
    US4881286A|1987-11-27|1989-11-21|Kamyr Ab|Effective diffuser/thickener screen backflushing|
    US4793161A|1987-11-27|1988-12-27|Kamyr Ab|Effective diffuser/thickener screen backflushing|
    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|
    SE462435B|1988-11-11|1990-06-25|Kamyr Ab|MAKE STABILIZING THE PRESSURE AND LIQUIDIZATION COUNTRIES IN A SILVER AND SILVER DEVICE|
    WO1994023119A1|1993-04-05|1994-10-13|Kvaerner Pulping Technologies Ab|Reciprocal movable screens in a vertically elongated vessel|
    US5444884A|1994-07-15|1995-08-29|Kamyr, Inc.|Controlling screen backflush and wash distribution in a pressure diffuser|
    SE9901668A0|1998-05-07|2000-11-07|J Robert Prough|Plate diffuser for treating comminuted cellulosic fibrous material|
    CN102575424B|2009-08-25|2014-08-13|维美德公司|Pressure diffuser with less power rating in hydraulic system|
    US10022656B2|2016-05-10|2018-07-17|Day Enterprises LLC|Filter pad|
    US10675572B2|2016-05-10|2020-06-09|Day Enterprises LLC|Filter pad|
    US10661206B2|2016-05-10|2020-05-26|Day Enterprises LLC|Filter pad for rapid removal|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE8000197A|SE435400B|1980-01-10|1980-01-10|SILAN SYSTEM FOR DEDUCTION OF LIQUID FROM SUSPENSIONS IN MOVEMENT|LV920542A| LV5304A3|1980-01-10|1992-12-29|Filter filter for fluid extraction from the plush suspension|
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