Multiway valve for fluids and its use
    1.
    发明授权
    Multiway valve for fluids and its use 有权
    用于流体的多通阀及其用途

    公开(公告)号:US6148861A

    公开(公告)日:2000-11-21

    申请号:US418149

    申请日:1999-10-14

    IPC分类号: F16K11/20

    摘要: The present invention comprises a multiway valve for fluids, consisting of an inlet line (1), a connector housing (9), basic valve bodies (2, 3) and additional valve bodies (25, 26, 26') branching off from the connector housing (9), with each of the valve bodies (2, 3, 25, 26, 26') having a valve housing (10) designed as a guide cylinder with a lateral discharge outlet (4) opening into the respective outlet line (5), with a valve spindle (13, 13a) movable in the axial direction within the guide cylinder with a valve head (12, 12a) engaging in a valve seat (6) in the connector housing (9) in the closed position of the respective valve body, as well as the use of this multiway valve.The basic valve bodies (2, 3) have a valve head lantern (17, 18) in the form of a straight cylinder (17) with an attached, straight cylinder (18) cropped at an inclined angle. The valve head (12a) of each additional valve body (25, 26, 26') has a cylindrical attachment with a front surface that forms a cavity curved inwards like the inner surface of a cylinder section, and a gable-roofed shaped wedge or a cone arranged flush to the front surface within said cavity.

    摘要翻译: 本发明包括用于流体的多通阀,由入口管线(1),连接器壳体(9),基本阀体(2,3)和从其分支的附加阀体(25,26,26')组成的多孔阀 连接器壳体(9),其中每个阀体(2,3,25,26,26')具有设计为导向气缸的阀壳体(10),其具有开口到相应出口管线的侧向排出口(4) (5),其中阀芯(13,13a)可在导向缸内在轴向方向上移动,其中阀头(12,12a)与连接器壳体(9)中的阀座(6)接合在闭合位置 的阀门,以及该多通阀的使用。 基本阀体(2,3)具有呈直筒形(17)形式的阀头灯(17,18),其具有以倾斜角度裁切的附接的直缸(18)。 每个附加阀体(25,26,26')的阀头(12a)具有圆柱形附件,其具有前表面,前表面形成与缸体部分的内表面一样向内弯曲的腔体,以及山形顶部形状的楔形物 在所述空腔内与前表面齐平的锥体。

    Process for filtering polymer melts with dead spot reduction
    2.
    发明授权
    Process for filtering polymer melts with dead spot reduction 失效
    过滤聚合物熔体与死点的过程

    公开(公告)号:US5484539A

    公开(公告)日:1996-01-16

    申请号:US413686

    申请日:1995-03-30

    IPC分类号: B01D29/11 B01D35/18 B29C47/68

    摘要: A process for filtering polymer melt which minimizes the generation of dead zones in the filter and provides uniform residence time and accurate temperature control. The process is carried out in an apparatus comprising a plurality of heat exchanger pipes, each enclosing a filter cartridge surrounded by an annular space which terminates at its upper end in a plurality of narrow channels. The molten polymer is charged into the annular space and divided into primary and secondary streams. The primary stream flows through the filter cartridge and the secondary stream, which constitutes 0.03 to 3.0 weight percent of the weight of the combined streams, flows through the narrow channels, whereupon the streams are combined and discharged from the apparatus. The discharge temperature of the polymer is maintained within .+-.1.degree. C. of the charging temperature and the heat exchanger fluid enters the apparatus at a temperature within 1.degree. and 5.degree.C. of the temperature of the melt.

    摘要翻译: 用于过滤聚合物熔体的方法,其使过滤器中死区的产生最小化并且提供均匀的停留时间和精确的温度控制。 该过程在包括多个热交换器管道的装置中进行,每个热交换器管道包围由环形空间围绕的过滤器滤芯,该环形空间在其上端终止于多个窄通道中。 将熔融的聚合物装入环形空间并分成一级和二级流。 主流体流过过滤器滤芯,并且构成混合流重量的0.03至3.0重量%的次流流过窄通道,于是流体从装置中组合并排出。 聚合物的排出温度保持在装入温度的+/- 1℃内,并且热交换器流体在熔体温度1℃和5℃的温度下进入设备。

    Polymer melt filtration apparatus
    3.
    发明授权
    Polymer melt filtration apparatus 失效
    聚合物熔体过滤装置

    公开(公告)号:US5456828A

    公开(公告)日:1995-10-10

    申请号:US252753

    申请日:1994-06-02

    摘要: A polymer melt filtration apparatus comprising a closed upright cylindrical vessel divided by two horizontal pipe plates into a small lower product distribution chamber with a product inlet at the bottom, a small upper product collecting chamber with a product outlet at the top, and a large middle chamber connected to a heat carrier fluid circuit. A plurality of closely spaced heat exchanger pipes are mounted in the middle chamber between the pipe plates and surrounded by heat carrier fluid, each pipe enclosing a filter cartridge detachably connected at its upper end to said pipe and radially spaced therefrom to form an annular space around each cartridge. A series of narrow channels are provided between the upper end of the annular space and the upper collecting chamber to impede the generation of dead zones inside the annular space and the collecting chamber. The main polymer melt stream flows inside the pipes through the filter cartridges. A very small amount of polymer passes through the channels, about 0.03 to 3.0 wt. % of the weight of the stream. This filtration apparatus and process provide accurate temperature control of the polymer melt and uniform residence time. Each individual filter cartridge is easily changed and cleaned without cooling down of the whole apparatus and it is not necessary to remove the whole filter assembly.

    摘要翻译: 一种聚合物熔体过滤装置,包括一个封闭的直立圆柱形容器,由两个水平管板分成一个小的下部产品分配室,底部有一个产品入口,一个小的上部产品收集室,顶部有一个产品出口,一个大的中间 室连接到热载体流体回路。 多个紧密排列的热交换器管安装在管板之间的中间室中并被热载体流体包围,每个管包围一个过滤器滤芯,其上端可拆卸地连接到所述管并且与其径向间隔开以形成环形空间 每个墨盒。 在环形空间的上端和上部收集室之间设置有一系列窄通道,以阻止在环形空间和收集室内产生死区。 主要的聚合物熔体流在管道内流过滤芯。 非常少量的聚合物通过通道,约0.03-3.0wt。 流量的百分比。 该过滤装置和方法提供了聚合物熔体的精确温度控制和均匀的停留时间。 每个单独的滤筒容易地改变和清洁,而不会冷却整个设备,并且不需要去除整个过滤器组件。