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公开(公告)号：US5300195A
公开(公告)日：1994-04-05
申请号：US200204
申请日：1988-05-31
摘要： In the continuous cooking of comminuted cellulosic fibrous material (e.g. wood chips) to produce paper pulp, the material is subjected to a minimum of mechanical action, especially under high temperature and pressure conditions, so as to increase the quality of the pulp. Also, even for large digesters the uniformity of treatment is enhanced, and scaling may be reduced while energy efficiency is increased. Material is fed without significant steaming to a feeder screw within a perforated cylinder mounted at the bottom of an impregnation vessel. The material flows upwardly in the impregnation vessel, with screens adjacent the top of the vessel thickening the slurry before it is discharged into the top of a continuous digester. The discharge from the impregnation vessel to the continuous digester is made with a minimum of mechanical action on the pulp. The impregnation vessel may be disposed within, and concentric with, the digester, or it may located exteriorly of the digester and supply more than one digester. Conduits mounted on the exterior of the impregnation vessel, when concentric with the digester, can supply treatment liquid at various locations along the height of the digester.
摘要翻译： 在粉碎的纤维素纤维材料（例如木片）的连续烹饪中以产生纸浆时，材料经受最小的机械作用，特别是在高温和高压条件下，以提高纸浆的质量。 此外，即使对于大型消化器，治疗的均匀性也增强，并且在能量效率增加的同时可以降低结垢。 在安装在浸渍容器底部的多孔圆柱体内，将材料进料而不显着蒸汽送入螺杆。 材料在浸渍容器中向上流动，邻近容器顶部的筛网在淤浆排放到连续蒸煮器的顶部之前使浆液变厚。 从浸渍容器到连续蒸煮器的排放通过对纸浆的最小的机械作用来制备。 浸渍容器可以设置在蒸煮器内并与蒸煮器同心的位置，或者它可以位于蒸煮器的外部并供应多于一个的消化器。 安装在浸渍容器外部的管道与蒸煮器同心时，可沿着消化器的高度向不同位置供应处理液。
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公开(公告)号：US4556494A
公开(公告)日：1985-12-03
申请号：US712312
申请日：1985-03-12
摘要： A method for diffusion washing and/or thickening paper pulp having a consistency of 6 to 15%. A number of withdrawal screens and fluid introducing structures are provided supported by spider arms which comprise conduits for introduction of liquid into and withdrawal of liquid from an elongated upright hollow vessel in which the assembly is disposed. The conduit means, with attached screen structures, is reciprocated up and down by a single linear actuator located preferably above the vessel and within the cross-sectional area thereof so that the wall of the vessel need not be penetrated by the conduits. The screens and fluid introducing structures remain stationary with respect to each other during reciprocation. A number of wiper blades, which may be operated by a single linear actuator, are provided at the top of the vessel for moving upwardly flowing pulp into withdrawal conduits surrounding the vessel periphery.
摘要翻译： 一种稠度为6〜15％的扩散洗涤和/或增稠纸浆的方法。 提供多个抽出筛网和流体引入结构，其由蜘蛛臂支撑，其包括用于将液体引入和排出液体的管道，该细长直立中空容器在其中设置组件。 具有附接的筛网结构的导管装置通过位于容器上方且在其横截面内的单个线性致动器上下往复运动，使得容器的壁不需要被导管穿透。 筛网和流体引入结构在往复运动期间相对于彼此保持静止。 可以由单个线性致动器操作的多个刮水器叶片设置在容器的顶部，用于将向上流动的纸浆移动到围绕容器周边的退避管道中。
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公开(公告)号：US4971694A
公开(公告)日：1990-11-20
申请号：US293855
申请日：1989-01-05
申请人： Ole J. Richter
发明人： Ole J. Richter
CPC分类号： D21D5/02 , B01D33/0116 , B01D29/665
摘要： Backflushing with internally mounted pistons and cylinders is provided in a pulp treating vertical vessel such as a paper pulp thickener, diffuser, or displacement bleacher. First and second sets of screens are mounted on a supporting arm/conduit within the vertical vessel, the first screens mounted directly to the arms and the second screens mounted on top of the first screens. A first cylinder is connected at one open end to the conduit and at the other open end is exposed to the pulp within the vessel. A second cylinder is mounted so that it is concentric with the first cylinder and both ends are in operative communication with the liquid conduit. A piston is mounted within each cylinder by a common vertically extending piston rod which connects them. The pistons and cylinders have different effective diameters. Relative movement between the pistons and cylinders is effected periodically in order to force liquid from within the cylinders into the conduit and ultimately out the screens to provide backflushing of the screens, which prevents clogging.
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公开(公告)号：US4508473A
公开(公告)日：1985-04-02
申请号：US468674
申请日：1983-02-22
申请人： Ole J. Richter , Erwin D. Funk
发明人： Ole J. Richter , Erwin D. Funk
CPC分类号： G01F11/24
摘要： A low pressure feeder includes a rotor containing at least one pocket having a single access opening to it, the rotor rotatable about an axis and enclosed in a housing having an inlet port vertically above an outlet port. A sealing structure is disposed in a large clearance volume between the rotor and the housing, the sealing structure comprising a single shoe having an opening communicating with the inlet port, and one or more pressure compensators for biasing the shoe into engagement with the rotor. The pressure compensators are responsive to the process pressure at the feeder high pressure outlet port. A gas blast structure is provided for supplying a blast of gas to the pocket to effect discharge of material from the pocket when it is in communication with the outlet port. A vent is provided immediately before the inlet port in the direction of rotation of the roller, the access opening being dimensioned with respect to the vent and inlet port so that it can communicate with both during a portion of path of rotation thereof.
摘要翻译： 低压给料器包括转子，该转子包含至少一个具有单个通道开口的口袋，该转子可围绕一个轴线旋转并且封闭在具有垂直于出口端口的入口端口的壳体中。 密封结构在转子和壳体之间以大的间隙容积设置，密封结构包括具有与入口连通的开口的单个鞋，以及一个或多个用于偏置鞋与转子接合的压力补偿器。 压力补偿器响应于进料器高压出口处的过程压力。 提供了一种气体吹扫结构，用于将空气吹送到口袋中，以在与出口连通时从口袋中排出材料。 在进口端口之前在滚子的旋转方向上提供通气口，进入开口相对于通气孔和入口端口的尺寸确定，使得它可以在其旋转路径的一部分期间与两者连通。
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公开(公告)号：US4276167A
公开(公告)日：1981-06-30
申请号：US34928
申请日：1979-04-25
CPC分类号： D21C9/02
摘要： A diffusion washer and/or thickener assembly is provided that is greatly simplified. A number of withdrawal screens and fluid introducing structures are provided supported by spider arms which comprise conduits for introduction of liquid into and withdrawal of liquid from an elongated upright hollow vessel in which the assembly is disposed. The conduit means, with attached screen structures, is reciprocated up and down by a single linear actuator located preferably above the vessel and within the cross-sectional area thereof so that the wall of the vessel need not be penetrated by the conduits. The screens and fluid introducing structures remain stationary with respect to each other during reciprocation. A number of wiper blades, which may be operated by a single linear actuator, are provided at the top of the vessel for moving upwardly flowing pulp into withdrawal conduits surrounding the vessel periphery.
摘要翻译： 提供了大大简化的扩散洗涤器和/或增稠器组件。 提供多个抽出筛网和流体引入结构，其由蜘蛛臂支撑，其包括用于将液体引入和排出液体的管道，该细长直立中空容器在其中设置组件。 具有附接的筛网结构的导管装置通过位于容器上方且在其横截面内的单个线性致动器上下往复运动，使得容器的壁不需要被导管穿透。 筛网和流体引入结构在往复运动期间相对于彼此保持静止。 可以由单个线性致动器操作的多个刮水器叶片设置在容器的顶部，用于将向上流动的纸浆移动到围绕容器周边的退避管道中。
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公开(公告)号：US4976586A
公开(公告)日：1990-12-11
申请号：US381067
申请日：1989-07-18
CPC分类号： F04D7/045 , B01F7/063 , F04D13/12 , F05B2210/132
摘要： A pumping system is capable of handling a paper pulp suspension of medium consistency (e.g. about 8-15% solids consistency) utilizing a conventional centrifugal pump. A conventional pump system capable of handling 3-8% consistency pulp may be retrofit to handle 8-15% consistency pulp. A tube with vanes, and having an open end, extends through the inlet to the pump so that there is a small clearance between the vanes and the inlet, and so that the open end is adjacent but spaced from the hub of the pump impeller. A gas passage extends from the hollow interior of the tube to an area remote from the pump. The tube is rotated in a direction of rotation opposite to the direction of rotation of the pump impeller, and at a speed sufficient to fluidize pulp of about 8-15% consistency, and to force the pulp toward the pump. Gas which collects at the pump impeller is withdrawn through the tube and a gas passage in a shaft connected to the tube, and for that purpose a vacuum pump may be utilized.
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公开(公告)号：US4637878A
公开(公告)日：1987-01-20
申请号：US356464
申请日：1982-03-09
摘要： In vertical vessels, particularly continuous pulp digesters, fibrous material suspended in liquid passes downwardly past screens through which treatment liquid is withdrawn. The screens are reciprocated vertically up and down utilizing a piston and cylinder assembly, operatively connected by a two-way valve to a source of fluid under pressure or a vent. The piston and screen are connected by a universal joint, and the screen is positively guided during movement. The piston is vertically above the screen and the screen moves downwardly under pressure from the pump, and returns upwardly, under the influence of interior digester pressure, during normal digester operation.
摘要翻译： 在垂直容器中，特别是连续的纸浆消化器中，悬浮在液体中的纤维材料向下通过筛网，通过该筛网处理液被排出。 使用活塞和气缸组件，通过双向阀可操作地连接到压力下的流体源或排气孔，使筛网垂直地往复运动。 活塞和屏幕通过万向节连接，运动过程中屏幕被积极引导。 活塞垂直于屏幕上方，屏幕在泵的压力下向下移动，并在正常的蒸煮器操作期间在内部蒸煮器压力的影响下向上返回。
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公开(公告)号：US4944167A
公开(公告)日：1990-07-31
申请号：US433794
申请日：1989-11-09
申请人： Finn Jacobsen , Ole J. Richter
发明人： Finn Jacobsen , Ole J. Richter
CPC分类号： D21F1/66 , B01D33/0315 , D21C9/04 , B01D33/033 , B01D33/39 , B01D33/48 , B01D33/60 , B01D33/763
摘要： A pressure diffuser includes in a liquid-tight pressurized vessel a vertical screen and which screen and vessel wall define first and second interior volumes for transmitting pulp from a pulp inlet to a pulp outlet and receiving displacement (e.g. wash or bleach) liquid transmitted from headers through the pulp. The screen ends have different cross-sectional areas, and quick movement of the screen effects backflushing. The volumes are segregated by a vertical, generally cylindrical, screen. A chamber is provided in communication on opposite sides of a piston therein with the pulp adjacent the pulp inlet and the extracted liquid. By displacing the piston immediately prior to rapidly moving the screen vertically to effect backflushing through the screen, the pulp pressure on the screen is being reduced and at the same time a volume is made available adjacent the pulp inlet in the chamber thus avoiding pressure shocks and compaction of the pulp adjacent the inlet caused by the movement of the screen.
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公开(公告)号：US4516887A
公开(公告)日：1985-05-14
申请号：US517747
申请日：1983-07-27
CPC分类号： B65G53/30
摘要： A high-pressure transfer device, utilizable with wood chips or particulate material, includes low-pressure inlet and outlet ports, with low-pressure shoes associated therewith, and high-pressure inlet and outlet ports with high-pressure shoes associated therewith. A rotor containing a plurality of diametrically through-going pockets operatively communicates with the ports. The low-pressure ports, and shoes, are quadrate in cross-section, and retainers are provided surrounding the low-pressure shoes for guiding radial movement thereof. The retainers include end portions which engage side walls of the high-pressure shoes for guiding radial movement thereof. Biasing means bias the shoes into operative association with the rotor to maintain effective sealing between the rotor and housing, unaffected by radial deflection of the housing. The high-pressure shoes contain through-extending openings which may be quadrate in cross-section at the portions thereof closest to the rotor, and circular in cross-section at the portions thereof furthest from the rotor. Pressure compensators, supplied with hydraulic fluid at a pressure proportional to that at the high-pressure inlet and outlet, are operatively associated with the high-pressure shoes to maintain the bias thereof into engagement with the rotor. The rotor, and all shoes, are made of metal.
摘要翻译： 可用木屑或颗粒材料使用的高压输送装置包括低压入口和出口以及与其相关联的低压鞋，以及与其相关的高压鞋的高压入口和出口。 包含多个直径通过的口袋的转子与端口可操作地连通。 低压端口和鞋子的横截面为正方形，并且围绕低压鞋的保持器设置用于引导其径向移动。 保持器包括接合高压鞋的侧壁以引导其径向移动的端部。 偏置装置将鞋子偏置成与转子操作关联，以保持转子和壳体之间的有效密封，而不受壳体的径向偏转的影响。 高压鞋包含通孔延伸的开口，其最靠近转子的部分的横截面为正方形，并且在离转子最远的部分呈横截面圆形。 压力补偿器以与高压入口和出口处成比例的压力的液压流体供应，与高压鞋可操作地相关联，以保持其与转子接合的偏压。 转子和所有的鞋子都是金属制成的。
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公开(公告)号：US4513515A
公开(公告)日：1985-04-30
申请号：US468716
申请日：1983-02-22
CPC分类号： F26B17/1408 , F26B17/1475
摘要： A vertical container holds and treats particulate material, such as comminuted cellulosic fibrous material like wood chips. The container includes a vertical interior wall, an open top, and a discharge outlet at the bottom. A top interior wall structure directs particulate material to a first false bottom concentric with it. The first false bottom is mounted for oscillation with respect to the vertical container and discharges particulate material through a discharge opening in the generally conical bottom thereof into a second false bottom structure. The second false bottom structure also includes a generally conical bottom with a discharge opening, and is also mounted for oscillation with respect to the container. Steam is preferably introduced into the second false bottom to effect steaming of the particulate material within it, and the container is held at super-atmospheric pressure.
摘要翻译： 垂直容器容纳和处理颗粒材料，例如粉碎的纤维素纤维材料如木屑。 容器包括垂直内壁，开口顶部和底部的排放口。 顶部内壁结构将颗粒材料引导到与其同心的第一假底部。 第一假底座安装成相对于垂直容器振荡，并将颗粒材料通过其大致圆锥形底部的排放口排放到第二假底部结构中。 第二假底结构还包括具有排出口的大致圆锥形的底部，并且还安装成相对于容器振荡。 蒸汽优选地引入第二假底部以实现其内的颗粒材料的蒸汽，并且容器保持在超大气压力下。
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