公开(公告)号：US6106669A

公开(公告)日：2000-08-22

申请号：US35335

申请日：1998-03-05

Applicant: Axel Gommel ,  Paul-Wilhelm Sepke

Inventor： Axel Gommel ,  Paul-Wilhelm Sepke

IPC: B01D33/073 ,  B01D33/21 ,  D21C9/18 ,  D21F1/74 ,  D21F1/76 ,  D21F1/78 ,  D21F1/80 ,  D21C5/00

CPC classification number: D21F1/80 ,  B01D33/073 ,  B01D33/21 ,  B30B9/241 ,  D21C9/18 ,  D21F1/74 ,  D21F1/76 ,  D21F1/78

Abstract: A process for thickening a fibrous pulp suspension by guiding the suspension between a rigid first face and a flexible second face that move in relation to each other and form a converging draining gap, where the first face and/or the second face is/are water permeable, and where the process includes providing the suspension to be drained, forming from the suspension a fibrous pulp layer with a solid matter content of at least about 4% on at least one of the first face and the second face, guiding the fibrous pulp layer into the draining gap, applying a pressure differential in the draining gap via the second face to thicken the fibrous pulp layer, the pressure differential being formed by stretching the second face and pressing the first face and the second face toward each other to drain water from the fibrous pulp layer, and transporting the thickened fibrous pulp from the draining gap.

Abstract translation: 通过将悬浮液引导到相对于彼此移动的刚性第一面和柔性第二面之间来形成纤维纸浆悬浮液的方法，并形成会聚的排出间隙，其中第一面和/或第二面是水 并且其中该方法包括提供待排出的悬浮液，从悬浮液形成在第一面和第二面中的至少一个上具有至少约4％的固体物质含量的纤维纸浆层，引导纤维纸浆 通过第二面在排出间隙中施加压差，使纤维纸浆层变厚，通过拉伸第二面并将第一面和第二面朝向彼此挤压而形成的压差，排出水 从纤维纸浆层，并且从排出间隙输送增稠的纤维纸浆。

公开(公告)号：US5785810A

公开(公告)日：1998-07-28

申请号：US198284

申请日：1994-02-18

Applicant: Reijo K. Salminen

Inventor： Reijo K. Salminen

IPC: D21C9/06 ,  D21C9/10 ,  D21C9/18 ,  D21D1/40 ,  D21F1/80 ,  D21C9/02

CPC classification number: D21C9/18 ,  D21C9/06 ,  D21C9/10 ,  D21D1/40 ,  D21F1/80

Abstract: A system for dewatering/washing wood pulp and also for bleaching the same. Pulp from a digester is directed into a dewatering/washing apparatus which comprises a high pressure vessel in which there is a table assembly having a perforate support surface for receiving the pulp thereon. A pressure differential is applied across the table assembly so that liquid is removed from the pulp. Also, a processing chemical and/or compound for bleaching is directed into the pulp at a final stage in the washer so as to be retained in the pulp. The pulp is then directed to a pressurized processing vessel where the compound and/or chemical reacts with the pulp. The pulp so treated in the processing vessel is then directed through a second washing station where the pulp is dewatered and has a compound and/or chemical introduced thereon, after which the pulp is transmitted to a second pressure vessel. This process is continued until the bleaching process is completed.

Abstract translation: 用于脱水/洗涤木浆的系统，也用于漂白木浆。 来自消化器的纸浆被引导到脱水/洗涤设备中，该设备包括高压容器，其中有一个具有用于在其上接收纸浆的穿孔支撑表面的工作台组件。 在台面组件上施加压差，使得液体从纸浆中移除。 此外，用于漂白的处理化学品和/或化合物在洗涤器中的最后阶段被引导到纸浆中，以便保留在纸浆中。 然后将纸浆引导到加压处理容器中，其中化合物和/或化学物质与纸浆反应。 然后在处理容器中处理的纸浆被引导通过第二洗涤站，其中纸浆脱水并具有引入其上的化合物和/或化学品，之后将纸浆传送到第二压力容器。 该过程一直持续到漂白过程完成。

公开(公告)号：US5591336A

公开(公告)日：1997-01-07

申请号：US333206

申请日：1994-11-02

Applicant: Peter Seifert ,  David E. Chupka ,  Terry L. Bliss

Inventor： Peter Seifert ,  David E. Chupka ,  Terry L. Bliss

IPC: B01D33/04 ,  D21C9/02 ,  D21C9/18 ,  D21D1/40 ,  D21F1/80 ,  B01D33/00

CPC classification number: D21F1/80 ,  B01D33/04 ,  D21C9/02 ,  D21C9/18 ,  D21D1/40 ,  B01D2201/38

Abstract: Improved apparatus for dewatering or washing a suspension of paper pulp in which first and second rolls are rotatably mounted with an endless loop of wire tensioned around the rolls, and in which a headbox delivers a pulp suspension to be thickened or washed and positioned with an outlet to discharge the pulp suspension into or onto the wire as it approaches the first roll, and in which the washed or dewatered pulp is collected after it has passed between the wire and a second roll, in which the first roll has a central shaft, and screw flighting on the shaft formed in left and right-hand sections are terminated at cylindrical discs mounted at opposite ends of the shaft, and in which the screw flighting has a depth which is substantially greater than the maximum thickness of the pulp layer and in which the aggregate open area between the screw flights is substantially greater than the cross-sectional area of the headbox outlet to assure that the spaces between the flights can be no more than partially filled with a pulp suspension during operation.

Abstract translation: 改进的用于对纸浆悬浮液进行脱水或洗涤的装置，其中第一和第二辊可旋转地安装有围绕辊子张紧的钢丝绳的环形环，并且其中流浆箱输送纸浆悬浮液以加厚或洗涤并定位成具有出口 当纸浆悬浮液接近第一辊时将纸浆悬浮液排放到丝网中，并且其中洗涤或脱水的纸浆在其经过线和第二辊之后被收集，其中第一辊具有中心轴，并且 在左侧和右侧部分形成的轴上的螺旋排出在安装在轴的相对端处的圆柱形盘端部终止，并且其中螺旋排出的深度基本上大于纸浆层的最大厚度，其中 螺杆飞行之间的总开口面积显着大于流浆箱出口的横截面面积，以确保飞行之间的空间可以不是 e在操作期间部分地填充有纸浆悬浮液。

公开(公告)号：US4614566A

公开(公告)日：1986-09-30

申请号：US575543

申请日：1984-01-31

Applicant: Martti Koponen ,  Martti Pullinen ,  Erkki Koski ,  Jouni Koskimies

Inventor： Martti Koponen ,  Martti Pullinen ,  Erkki Koski ,  Jouni Koskimies

IPC: D21F9/02 ,  D21F1/00 ,  D21F1/48 ,  D21F3/00 ,  D21F9/00 ,  D21F1/40 ,  D21F1/80 ,  D21F3/04

CPC classification number: D21F1/48 ,  D21F3/00 ,  D21F9/003

Abstract: A web-forming section and method in a paper machine. The web-forming section includes a lower wire loop having an initial lower wire run constituting an initial single-wire dewatering zone of the web-forming section in which the web is dewatered through the lower wire, and an upper wire loop having a joint run with a subsequent run of the lower wire to form a two-wire dewatering zone of the web-forming section within which dewatering takes place substantially through the upper wire. A first open faced forming roll is situated within the upper wire loop so that the two-wire dewatering zone begins and curves upwardly in the region of the first forming roll. A forming shoe within the lower wire loop has a curved deck whose center of curvature is situated on the side of the lower wire loop and further guides the joint run of the upper and lower wires in the two-wire dewatering zone. A second forming roll situated within the lower wire loop after the forming shoe guides the joint run of the upper and lower wires over a downwardly curved sector thereof. According to the method, initial dewatering occurs in the single-wire dewatering zone through the lower wire. In the two-wire dewatering zone, within the range of the first and second forming rolls and the forming shoe situated therebetween, dewatering occurs first within the sector of the first open forming roll in two directions through both the upper and lower wires and primarily through the upper wire. The web is thus substantially dewatered whereupon within the region of the forming shoe, further dewatering takes place primarily upwardly through the upper wire and thereupon the dewatering pressure is further increased within the range of the second forming roll while dewatering continues to take place substantially through the upper wire.

Abstract translation: 纸机中的卷筒纸成型部和方法。 卷筒纸形成部分包括下线环，其具有构成卷筒纸形成部分的初始单丝脱水区的初始下丝线，其中网通过下线脱水;以及上线环，其具有接合线 随后下游丝线形成网状物形成部分的双线脱水区，其中基本上通过上部线材进行脱水。 第一露面成形辊位于上部线环内，使得两线脱水区在第一成形辊的区域中开始并向上弯曲。 下线环内的成形靴具有弯曲的甲板，其曲率中心位于下线环的侧面，并进一步引导上下两根丝线在双线脱水区的连接行程。 在成形靴之后位于下部线环内的第二成形辊引导上下电线在其向下弯曲的部分上的接合行程。 根据该方法，通过下线在单线脱水区发生初始脱水。 在双线脱水区域中，在第一成形辊和第二成形辊以及位于它们之间的成形靴的范围内，首先在第一开放成形辊的扇区内沿两个方向穿过上部和下部导线首先脱水，并且主要通过 上线。 因此，网状物基本上脱水，因此在成型鞋的区域内进一步脱水通过上部线材主要向上发生，并且随后脱水压力在第二成形辊的范围内进一步增加，同时脱水继续基本上通过 上线。

公开(公告)号：US4491521A

公开(公告)日：1985-01-01

申请号：US412198

申请日：1982-08-27

Applicant: Rolf Wenske ,  Hans Schnell ,  Peter Mirsberger

Inventor： Rolf Wenske ,  Hans Schnell ,  Peter Mirsberger

IPC: B30B9/24 ,  D21C9/18 ,  D21F1/80 ,  F26B5/14 ,  B01D33/04

CPC classification number: F26B5/14 ,  B30B9/246 ,  D21C9/18 ,  D21F1/80

Abstract: A dewatering apparatus is disclosed containing a pre-dewatering funnel possessing pervious walls over which there are guided two wires. Arranged after the pre-dewatering funnel are two dewatering cylinders over which both of the wires are guided along a substantially S-shaped path of travel. A press roll is arranged after the last dewatering cylinder, this press roll coacting with further press rolls.

Abstract translation: 公开了一种脱水设备，其包含具有可渗透壁的预脱水漏斗，在其上引导两根导线。 在预脱水漏斗之后布置两个脱水筒，两个导丝沿着基本上S形的行进路径引导。 在最后一个脱水筒之后设置压辊，该压辊与另外的压辊共同作用。

公开(公告)号：US4147101A

公开(公告)日：1979-04-03

申请号：US682677

申请日：1976-05-03

Applicant: Otto Heissenberger ,  Rupert Syrowatka ,  Ernst Tutschek

Inventor： Otto Heissenberger ,  Rupert Syrowatka ,  Ernst Tutschek

IPC: D21F1/80 ,  B30B9/24 ,  D21F1/00 ,  D21F3/02 ,  B30B5/04

CPC classification number: B30B9/24

Abstract: This invention relates to an improvement in a press for dehydrating material in which the material is passed between two endless sieve belts adapted to move in the same direction and to pass over and around pairs of rollers and/or offset upper and lower rollers, the rollers in various sets forming a pre-dehydration zone and a wedging or compression zone,The improvement comprising a compression zone in the form of a frame-like structure, said structure containing individual compression roller means mounted on bearing blocks of varying heights,And means for displacing and/or exchanging said bearing blocks, whereby a path for said material has an ascending slope with line compression, or is wavelike or S-shaped with surface compression.

Abstract translation: 本发明涉及一种用于脱水材料的压榨机的改进，其中该材料通过适于沿相同方向移动的两个环形筛网带之间并且绕过成对的辊和/或偏移上下辊，辊 在形成预脱水区域和楔入或压缩区域的各种组合中，包括框架结构形式的压缩区域的改进，包含各种压缩轴承的单独压缩辊装置的均匀结构的变化结构以及改变的装置 位移和/或交换固定的轴承块，由于材料的路径具有线性压缩的升降斜率，或者是表面压缩的波形或S形。

公开(公告)号：US3821073A

公开(公告)日：1974-06-28

申请号：US29402072

申请日：1972-10-02

Applicant: KARLSTAD MEKANISKA AB

Inventor： ERIKSSON E

IPC: D21F1/66 ,  D21F1/00 ,  D21F9/02 ,  D21F11/00 ,  D21F11/04 ,  D21F1/80

CPC classification number: D21F11/04

Abstract: In a process for the manufacture of paper or a similar fibre sheet product the initial fibre-stock suspension, which contains BOD substances, is divided into two fibre suspension flows. One of these fibre suspension flows is conveyed to a first sheet forming stage wherein a first fibre layer is formed and dewatered. The second fibre suspension flow is first subjected to a washing process in which the original suspension water containing BOD substances is exchanged for new suspension water which is substantially free from BOD substances, and is after this washing process conveyed to one or more additional sheet forming stages wherein one or more additional fibre layers are formed and dewatered. These additional fibre layers are joined with the first fibre layer from the first sheet forming stage into a multi-layer fibre web, which is passed through a press section for further dewatering. The backwater from the first sheet forming stage and the exchanged suspension water containing BOD containing substances from the washing process is recirculated to the initial fibre-stock suspension. The backwater from the additional sheet forming stages and from the press section is preferably recirculated to the washing process and used therein for the substitution of the original suspension water containing BOD containing substances in the second fibre suspension flow.

公开(公告)号：US3792656A

公开(公告)日：1974-02-19

申请号：US3792656D

申请日：1972-03-27

Applicant: ANDRITZ AG MASCHF

Inventor： HEISSENBERGER O

IPC: B30B9/24 ,  D21F1/80 ,  D21F3/04 ,  B30B5/04

CPC classification number: B30B9/24 ,  D21F1/80

Abstract: This invention relates to an improvement in a pressing device for the removal of water from solid materials, particularly cellulose or similar fibrous material, comprising a preliminary pressing station and a main pressing station including pairs of upper and lower horizontal rollers between which a sheet or web of material to be dehydrated is passed, on a sieve or between two sieves. The improvement comprises a lower roller mounted ahead of the paired upper rollers in a staggered manner in the traveling direction of the sieve, in at least one of said preliminary and main pressing stations.

Abstract translation: 本发明涉及一种用于从固体材料，特别是纤维素或类似纤维材料中去除水的挤压装置的改进，其包括预加压站和包括一对上下水平辊的主加压站，在该挤压站之间， 的待脱水材料通过筛子或两个筛子之间。 该改进包括在所述预压和主加压站中的至少一个中，在筛子的行进方向上以交错方式安装在成对的上辊之前的下辊。

公开(公告)号：US20230349099A1

公开(公告)日：2023-11-02

申请号：US17998235

申请日：2021-05-10

Applicant: Stora Enso OYJ

Inventor： Isto Heiskanen ,  Kaj Backfolk

IPC: D21F1/80 ,  D21F11/02 ,  D21H11/18

CPC classification number: D21F1/80 ,  D21F11/02 ,  D21H11/18

Abstract: The present invention relates to a method for manufacturing a web or film comprising highly refined cellulose fibers in a paper machine, the method comprising the steps of: a) forming a wet web by applying an aqueous pulp suspension comprising highly refined cellulose fibers on a wire; and b) dewatering the wet web on the wire to obtain a dewatered web comprising highly refined cellulose fibers, wherein the dewatering comprises membrane assisted dewatering using a gas permeable membrane temporarily applied to the wet web, wherein the gas permeable membrane has a lower air permeability than the wire.

公开(公告)号：US20230193558A1

公开(公告)日：2023-06-22

申请号：US18084720

申请日：2022-12-20

Applicant: Valmet Technologies Oy

Inventor： Juha-Pekka Huhtanen ,  Tuomo Aho

IPC: D21F1/00 ,  D21H11/18 ,  D21F9/00 ,  D21F3/08 ,  D21F3/04 ,  D21G9/00 ,  D21F1/80

CPC classification number: D21F1/0009 ,  D21H11/18 ,  D21F9/003 ,  D21F3/08 ,  D21F3/04 ,  D21G9/0027 ,  D21F1/80

Abstract: The invention relates to a system of producing MFC (micro fibrillated cellulose) having a process device (30) of a pulper, a refiner or a screen configured to process MFC suspension to consistency of 0.5-5%. The system has a continuous pressing means (15; 25, 26) configured to dry the MFC suspension to a consistency of 6-60%. A method of producing MFC has at least one process stage (30) which processes a MFC suspension to a consistency of 0.5-5% by a process device (30). In the process stage the MFC suspension is pulped in a pulping stage in a pulper and/or refined in a refining stage by a refiner and/or screened in a screening stage by a screen. The MFC suspension having the consistency of 0.5-5% is dried in a drying stage of continuous pressing (15, 25, 26) by continuous a pressing device (15, 25, 26) to a consistency of 6-60%.