• 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 for screening pulp comprises a vessel, a cylindrical screen within the vessel, a rotating element moving in the vicinity of the screen at a predetermined speed, an inlet for the unscreened pulp, an outlet for the screened pulp in the vessel. The rotating element has a contour surface with grooves formed of a first plane parallel to the envelope surface, an inclined plane, an upper plane and a side plane, the side plane being essentially perpendicular to the first plane, the inclined plane forming an angle between 30 DEG -60 DEG with the first plane, the upper plane being parallel to the first plane. The rotating element may be a rotor or blade type segments.
    公开号:SU1309905A3
    申请号:SU843692006
    申请日:1984-01-20
    公开日:1987-05-07
    发明作者:Лампениус Гарри
    申请人:А.Альмстрем Осакейхтие (Фирма)；
    IPC主号:
    专利说明:

    fO
    11309905
    The invention relates to a sieve plate, which is intended mainly for sieves used for sifting paper pulps and for the pulp industry.
    The purpose of the invention is to increase productivity and prevent blockage of perforations.
    Figure 1 shows a sieve drum in which a sieve plate is used; in Fig.2 and 3 section aa in Fig.1 (options); Figures 4 and 5, versions of the screen plate.
    The grooves 1 are parallel to the axis on the inner surface of the screen drum 2. The pulp rotates in the screen in the direction of arrow B and at the same time moves in the direction of the axis of rotation in the direction of the end of the waste drum. Since the component in the direction of the circumference is much larger than the component in the direction of the axis, the angle between the direction of the grooves and the direction of flow of the pulp is slightly different from the straight line,
    In accordance with the variants shown in FIGS. 2 and 3, the groove forms the bottom plane 3, which is parallel to the surface of the sieve, the side surface upstream 4 and the side surface downstream 5.
    The angle about ((Figure 2) between the surface of the sieve and the surface is higher with the flow
    20
    thirty
    py. The total width of the grooves is defined with a hole or pitch.
    The variant shown in Fig. A differs from that described by the fact that between side surfaces 4 and 5 of ditch 2 there is a surface 7 parallel to the surface of the sieve 8, intended to improve the resistance to wear of the sieve plate compared to the sieve plate (Fig. 2), where then 9, formed by the side surfaces 3 and 5, can be abraded.
    The grooves 2 (FIG. 5) are Y-shaped, with the result that both side surfaces 4 and 5 are perpendicular to the surface 8 of the sieve.
    权利要求:
    Claims (8)
    [1]
    1. A sieve plate containing longitudinal grooves, the direction of which is perpendicular to the direction of sieved pulp, one of the side walls of each groove perpendicular to the working surface of the sieve plate, and perforations. are made in the bottom of the groove, which, in order to improve performance and prevent clogging of perforations, the bottom surface of each and the grooves is made flat and parallel to the working surface of the sieve plate, and the other side wall
    4 or between the surface of the tangent 35 of each groove is flat and the surface of the screen near this side surface and this side surface is about 90; the angle between the surface of the screen and the side surface downstream 5 is 5-60, preferably about 30. In this form, a pulsating movement of the fibrous mesh formed on the surface of the sieve is created without complete destruction.
    40
    45
    is located at an angle from 5 to 60 k
    , the working surface of the sieve plates
    I
    [2]
    2. Plate pop.1, differing from the fact that the plane of each groove located along the flow of bbkov forms the angle of 30 ° to the working surface of the plate.
    [3]
    3. A plate as claimed in claim 1, wherein the lateral plane of each groove located downstream of each groove is perpendicular to the working surface of the plate.
    Fig. 3 shows the formation for intensive destruction of the fiber, the angle being 5-60 and the angle 90. The perforations 6 of the sieve plate are located on the bottom surface of the 3 grooves.
    The width of the groove bottom surface is greater than or equal to the diameter or width of the perforations. The depth of the groove may be greater or less than the diameter or length of the perforations, preferably 0.4-4 mm, depending on the pulo
    0
    thirty
    py. The total width of the grooves is determined by the hole or pitch.
    The embodiment shown in Fig. A differs from that described in that between the side surfaces 4 and 5 of the grooves. 2, there is a surface 7 parallel to the surface of the sieve 8, designed to improve the wear resistance of the sieve plate compared to the sieve plate (Fig. 2), where point 9 formed by the side surfaces 3 and 5 can be abraded.
    The grooves 2 (FIG. 5) are Y-shaped, with the result that both side surfaces 4 and 5 are perpendicular to the surface 8 of the sieve.
    Invention Formula
    1. A sieve plate containing longitudinal grooves, the direction of which is perpendicular to the direction of the sifted pulp, one of the side walls of each groove is perpendicular to the working surface of the sieve plate, and the perforations are filled in the bottom of the groove, which is different for that purpose performance and prevention of clogging of perforations, the bottom surface of each of the grooves is made flat and parallel to the working surface of the sieve plate, and the other side wall
    each groove is made flat and
    angled from 5 to 60 k
    working surface of the sieve plate.
    2. Plate pop.1, characterized in that the plane of each groove located downstream of the bbkov plane forms an angle of 30 ° to the working surface of the plate.
    3. The plate according to claim 1, wherein the downstream side plane of each groove is perpendicular to the working surface of the plate.
    [4]
    4. Plate pop.1, characterized in that it is located above; along the flow, the lateral plane of each groove is perpendicular to the working surface of the plate.
    [5]
    5. The plate according to claim. Characterized in that the lateral plane located downstream and Bbmie located along the stream, the lateral plane of adjacent grooves are connected
    between a surface parallel to the working surface of the plate.
    I
    [6]
    6. Plate according to claim 1, about aphids h and u-. This is because the width of the perforations 5 is less than the width of the surface of the bottom of the grooves.
    54
    [7]
    7. The plate according to claims 1 and 6, that is, that the perforations are made in the form of round holes.
    [8]
    8. A plate according to claim 1, characterized in that the depth of each groove is made in the range from 0.4 to 4 mm.
    9I2.
    VU2.
    9U2.5
    Editor N. Gunko Order 1808/58
    Tehred M. Khodanych
    Corrector
     539Subscription
    VNIIPI USSR State Committee
    for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5
    Production and printing company, Uzhgorod, st. Design, And
    Proofreader G. Reshetnik
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    同族专利:
    公开号 | 公开日
    US4676903A|1987-06-30|
    DE3400423C2|1988-10-20|
    SE462982B|1990-09-24|
    DE3400423C3|1995-11-09|
    FI830256L|1984-07-27|
    SE8400330L|1984-07-27|
    IT1178815B|1987-09-16|
    SE8400330D0|1984-01-23|
    US5147543A|1992-09-15|
    FR2539644B3|1985-05-17|
    IT8467021D0|1984-01-10|
    JPS59137594A|1984-08-07|
    FI830256A0|1983-01-26|
    JPH0115633B2|1989-03-17|
    US4950402A|1990-08-21|
    FI67588C|1985-04-10|
    US4776957A|1988-10-11|
    US4836915A|1989-06-06|
    FR2539644A1|1984-07-27|
    US4529520A|1985-07-16|
    IT8452831V0|1984-01-10|
    KR890701836A|1989-12-21|
    FI67588B|1984-12-31|
    DE3400423A1|1984-07-26|
    US4880540A|1989-11-14|
    CA1215943A|1986-12-30|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FI830256A|FI67588C|1983-01-26|1983-01-26|SILPLAOT|
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