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    • 82. 发明授权
    • Filter structure
    • 过滤器结构
    • US3638798A
    • 1972-02-01
    • US3638798D
    • 1969-09-26
    • BUCKAU WOLF MASCHF R
    • BASFELD KLAUSSCHREIBER HEINRICH
    • B01D33/00B01D33/06
    • B01D33/067
    • A rotatable filter drum has a plurality of internal filter cells which orbit about the axis of rotation of the drum in an endless path in which they are alternately immersed into and emerge from a bath of liquid to be filtered. Suction means communicates with the cells for drawing liquid in form of the initial filtrate into the cells when the same are immersed, with concomitant buildup of a filter cake on the exterior of the drum in the area of the respective cells. Dispensing means dispenses a wash solution onto the cells when the same are emerged from the bath so that the wash solution penetrates the filter cake and enters into the cells as a wash filtrate. A leading and a trailing conduit communicate with each of the cells in the respective leading and trailing regions thereof for evacuating the initial and wash filtrate therefrom. Control valve means defines two concentric annular interior channels one of which communicates with the leading conduits and the other of which communicates with the trailing conduits. First and second outlet means communicate with both of the channels, and adjustable control means in the annular channels is operative for diverting initial filtrate into the first outlet means and wash filtrate into the second outlet means to thereby separate the initial filtrate and the wash filtrate from one another.
    • 可旋转的过滤鼓具有多个内部过滤器单元,该多个内部过滤器单元围绕滚筒的旋转轴在环形路径中轨道运动,在该循环路径中,它们被交替地浸入并从待过滤的液体浴中排出。 抽吸装置与浸入的细胞中的初始滤液形式的液体一起进入细胞,同时在各个细胞区域的鼓的外部附带积聚滤饼。 当从浴中出来时,分液装置将洗涤溶液分配到细胞上,使得洗涤溶液渗透滤饼并作为洗涤滤液进入细胞。 引导和拖尾导管与其前后各区域中的每个细胞连通,用于从其中排出初始和洗涤滤液。 控制阀装置限定了两个同心的环形内部通道,其中一个通道与前导管道连通,另一个与后导管连通。 第一和第二出口装置与两个通道连通,并且环形通道中的可调控制装置用于将初始滤液转移到第一出口装置中并将滤液洗涤到第二出口装置中,从而将初始滤液和洗涤滤液从 另一个。