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公开(公告)号：US11926961B2
公开(公告)日：2024-03-12
申请号：US17733034
申请日：2022-04-29
申请人： ANDRITZ (China) Ltd.
发明人： Alexander Gscheider
IPC分类号： D21D5/06
CPC分类号： D21D5/06
摘要： A method for dilution for a pressure screen comprising a rotor rotating inside a screen a distance to the screen, includes supplying feeding stock into a screening zone formed in the spacing between the rotor and the screen with some of the feeding stock passing through the screen into an accept area to become accept, and the remaining feeding stock discharged into a reject area as reject flow. The amount of the dilution water added into the reject flow is 0.8 to 3.5 times the amount of the reject flow by volume. Additionally, a pressure screen comprises a dilution water adding apparatus adapted to add dilution water directly into the reject area of the pressure screen, wherein the amount of the dilution water added into the reject flow is 0.8 to 3.5 times of the amount of the reject flow by volume.
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公开(公告)号：US20220349124A1
公开(公告)日：2022-11-03
申请号：US17733034
申请日：2022-04-29
申请人： ANDRITZ (China) Ltd.
发明人： Alexander Gscheider
IPC分类号： D21D5/06
摘要： A method for dilution for a pressure screen comprising a rotor rotating inside a screen a distance to the screen, includes supplying feeding stock into a screening zone formed in the spacing between the rotor and the screen with some of the feeding stock passing through the screen into an accept area to become accept, and the remaining feeding stock discharged into a reject area as reject flow. The amount of the dilution water added into the reject flow is 0.8 to 3.5 times the amount of the reject flow by volume. Additionally, a pressure screen comprises a dilution water adding apparatus adapted to add dilution water directly into the reject area of the pressure screen, wherein the amount of the dilution water added into the reject flow is 0.8 to 3.5 times of the amount of the reject flow by volume.
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公开(公告)号：US20190240607A1
公开(公告)日：2019-08-08
申请号：US16266445
申请日：2019-02-04
发明人： Kentaro YAMADA
CPC分类号： B01D46/0068 , B01D46/0019 , B01D46/24 , B01D2279/00 , D21B1/10 , D21D5/06
摘要： Technology improving the effect of cleaning a filter by a high pressure air current is provided. A first dust collector 27 has a housing into which a gas carrying capture material is carried; a filter 240 having a filter element 305 that captures the capture material, and an opening 305b from which air passing through the filter element 305 flows out; and an injector having a nozzle with an injection opening that injects a gas, moves the nozzle to a position in contact with the opening, and injects the gas from the injection opening 305b when the nozzle is in contact with the opening 305b.
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公开(公告)号：US20190194868A1
公开(公告)日：2019-06-27
申请号：US16220536
申请日：2018-12-14
发明人： Hiroshi TANAKA
摘要： Technology for efficiently extracting fiber from a feedstock containing fiber. A subunit has a mesh drum configured as a rotatable cylinder with mesh in at least part of its surface, and a case that houses the mesh drum. The case has a first opening and a second opening that communicate with a first area, and a third opening that communicates with a second area. First screened material is supplied from the first opening to the first area. The subunit discharges from the third opening waste, which is a first component of the first screened material moved by an air current from the first area to the second area, and discharges from the second opening by an air current processing feedstock, which is a second component of the first screened material that does not pass through the mesh drum with the air current and remains in the first area.
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公开(公告)号：US20090236267A1
公开(公告)日：2009-09-24
申请号：US11721302
申请日：2005-12-07
申请人： Veli-Matti Rajala
发明人： Veli-Matti Rajala
IPC分类号： D21D5/06
摘要： A screen and a method for screening pulp. The screen comprises a body, a screen cylinder arranged inside the body for screening the pulp, and an accept chamber and an accept aggregate connected with it for removing the accepted pulp fraction from the screen. The accept chamber is arranged between the screening surface of the screen cylinder and the screen body and it is arranged to expand in the radial direction of the screen cylinder outwards from the screen cylinder continuously in the longitudinal direction of the screen cylinder towards the line which is parallel to the radius of the screen cylinder and corresponds to the cross-section of the body and on which the accept aggregate is arranged.
摘要翻译： 筛选和筛选纸浆的方法。 屏幕包括主体，布置在主体内用于筛选纸浆的筛筒，以及与其连接的接收室和接收聚集体，用于从屏幕中去除所接收的纸浆部分。 容纳室布置在筛筒的筛网表面和筛体之间，并且布置成沿丝网滚筒的径向方向沿丝网滚筒的纵向方向向丝网滚筒的径向朝向线的方向向外延伸， 平行于筛筒的半径，并且对应于主体的横截面并且其上布置有接收骨料。
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公开(公告)号：US20070199883A1
公开(公告)日：2007-08-30
申请号：US11671670
申请日：2007-02-06
CPC分类号： D21D5/026
摘要： A device for cleaning a suspension, preferably a fibrous suspension for paper production. The device includes a screen basket, on the exterior surface of which the suspension to be cleaned is supplied and from the interior surface of which the screened accepted stock is released. A housing surrounds the screen basket. The housing includes an inflow for the suspension to be cleaned, an accepted-stock outlet for the cleaned suspension and a reject outlet for impurities. A scraping device rotates on the outside of the screen basket about the screen basket axis and has scraper blades (foils) which scrape along the exterior surface of the screen basket. The scraping device comprises a drum with a cylinder surrounding the screen basket. The cylinder carries a plurality of foils on its inside facing the screen basket.
摘要翻译： 用于清洁悬浮液的装置，优选用于造纸的纤维悬浮液。 该装置包括筛篮，其外表面上提供待清洁的悬浮液，并且从其内表面放出被筛选的可接受的原料。 围绕筛篮的外壳。 壳体包括待清洁的悬浮液的流入物，用于清洁的悬浮液的可接受的出口和用于杂质的废品出口。 刮板装置围绕筛篮轴线在筛网的外侧旋转，并且具有沿筛网的外表面刮擦的刮刀（箔）。 刮刀装置包括具有环绕筛篮的气缸的滚筒。 气缸在其面向筛篮的内侧承载多个箔片。
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公开(公告)号：US06938846B1
公开(公告)日：2005-09-06
申请号：US09958418
申请日：2000-03-03
申请人： Klas Kriström , Kjell Forslund
发明人： Klas Kriström , Kjell Forslund
CPC分类号： D21D5/06
摘要： Apparatus for screening pulp suspensions is provided, including a housing, a rotary screen within the housing, a screen chamber between the rotary screen and the housing, a reject outlet, an accept outlet, an outer screen surface defining the outer surface of the screen chamber, a bottom screen surface defining the lower surface of the screen chamber, a slot ring at the bottom screen surface and adjacent to a knob ring at the lower end of the rotary screen, and an adjustment screw for adjusting the size of the gap between the knob ring and the slot ring from outside of the housing.
摘要翻译： 提供了用于筛选纸浆悬浮液的装置，包括壳体，壳体内的旋转筛网，旋转筛网和壳体之间的筛网室，排污口，接收出口，限定筛网室外表面的外筛面 ，限定屏幕室的下表面的底部屏幕表面，底部屏幕表面处的狭槽环，并且与旋转屏幕的下端处的旋钮环相邻，以及用于调节旋转屏幕之间的间隙的尺寸的调节螺钉 旋钮环和外壳外的槽环。
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公开(公告)号：US20050126986A1
公开(公告)日：2005-06-16
申请号：US10944391
申请日：2004-09-20
申请人： Yoshihiko Aikawa
发明人： Yoshihiko Aikawa
CPC分类号： D21D5/026
摘要： A papermaking screen device includes a tank for receiving papermaking raw materials; an agitator provided in the tank; a screen provided in the tank; and a partition wall for dividing the screen and the tank. The tank includes a first chamber located at an outer side of the screen for receiving the papermaking raw materials; a second chamber located at an inner side of the screen; and a third chamber located at the outer side of the screen for discharging the papermaking raw materials. The first chamber is connected to a supply passage for supplying the papermaking raw materials into the tank and a first discharge passage for discharging the papermaking raw materials. The second chamber is connected to a second discharge passage for discharging the papermaking raw materials. The third chamber is connected to a discharge passage for discharging the papermaking raw materials to an outside of the tank.
摘要翻译： 造纸屏幕装置包括用于接收造纸原料的罐; 设置在罐中的搅拌器; 在罐中提供的屏幕; 以及用于分隔屏幕和水箱的分隔壁。 所述罐包括位于所述筛网外侧的用于接收所述造纸原料的第一室; 位于屏幕内侧的第二室; 以及位于筛网外侧的用于排出造纸原料的第三室。 第一室连接到用于将造纸原料供应到罐中的供给通道和用于排出造纸原料的第一排出通道。 第二室连接到用于排出造纸原料的第二排出通道。 第三室连接到用于将造纸原料排放到罐的外部的排出通道。
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公开(公告)号：US5718826A
公开(公告)日：1998-02-17
申请号：US451349
申请日：1995-05-26
申请人： Frey A. Frejborg
发明人： Frey A. Frejborg
IPC分类号： B03B5/48 , D21D5/02 , D21D5/06 , D21D5/16 , B01D33/067
CPC分类号： D21D5/16 , Y10T29/496 , Y10T29/49604
摘要： A screen cylinder, screen, method of manufacture of the screen cylinder, and method of use of the screen cylinder, allow screen capacity to be maximized without sacrificing screen cylinder strength, and while achieving a clean accepts flow. A screen cylinder is constructed in a conventional manner except that at least one reinforcing ring is permanently fastened (typically by continuous or spot laser or electric beam welding, or direct resistance welding) to at least a majority of (and typically essentially all of) the land areas which separate grooves in a row from each other, at the outlet surface of the cylinder. The welds each typically have a width of about 1 to 3 mm (that is they are very small), but that width is typically at least about 75% of the width of a land area in which it is formed, and the weld has a length of at least about 50% of the width of the reinforcing ring at the weld. In this way effective slot length of screen cylinders may be about 65-90% of the total screen length, compared to only about 45-55% for conventional screen cylinders. The screen cylinders are particularly effective in screening cellulose pulps from the pulp and paper industry.
摘要翻译： 屏幕滚筒，筛网，丝网滚筒的制造方法以及筛筒的使用方法允许筛网容量最大化而不牺牲筛筒强度，同时实现清洁的接受流动。 以常规方式构造筛筒，除了至少一个加强环被永久地固定（通常是通过连续或点状激光或电子束焊接或直接电阻焊接）至少大部分（并且通常基本上全部） 在气缸的出口表面处分隔开一排的槽的陆地区域。 焊缝各自通常具有约1至3mm的宽度（即它们非常小），但是该宽度通常为其形成的焊盘区域的宽度的至少约75％，并且焊接具有 长度为焊缝宽度的至少约50％。 以这种方式，筛筒的有效槽长度可以是总筛网长度的约65-90％，而常规筛筒仅为约45-55％。 筛筒在纸浆和造纸工业中筛选纤维素浆是特别有效的。
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公开(公告)号：US5497886A
公开(公告)日：1996-03-12
申请号：US46319
申请日：1993-04-15
CPC分类号： D21D5/026 , B01D29/356 , B07B1/20 , B01D2201/184 , B01D2201/287
摘要： A hydrodynamic device for generating negative pressure excursions in a pulp slurry during fine screening, includes a plurality of half-foil members disposed on a substantially cylindrical outer surface of a rotor. The rotor is mounted within and co-axial with a substantially cylindrical screen having a circumferentially continuous apertured zone to define an annular screening chamber between the rotor and the screen. The half-foil members are collectively at least axially co-extensive with the apertured zone and have a leading edge which, also collectively, is inclined at a spiral angle relative to the axis of the rotor such that during rotation, the collective leading edge of the half-foil members conduct large particles downwardly through the screening chamber. A selection of hydrodynamic foil configurations is provided in order to adapt to a wide range of pulp types and screening conditions.
摘要翻译： 一种用于在精细筛选期间在纸浆中产生负压偏移的流体动力装置包括设置在转子的基本上圆柱形的外表面上的多个半箔构件。 转子与具有周向连续有孔区域的基本上圆柱形的筛网安装在同轴的内部，以在转子和筛网之间限定环形筛分室。 半箔构件集体地与有孔区域至少轴向共同延伸并且具有前缘，其也总体相对于转子的轴线以螺旋角度倾斜，使得在旋转期间，集合前缘 半箔构件将大颗粒向下传送通过筛分室。 提供了一系列流体动力学箔结构，以适应各种纸浆类型和筛选条件。
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