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    • 4. 发明授权
    • Travelling sheet, flat-bed vacuum filter and method
    • 旅行床,平床真空过滤器和方法
    • US4267060A
    • 1981-05-12
    • US123101
    • 1980-02-19
    • Peter A. Miller
    • Peter A. Miller
    • B01D29/09B01D29/19B01D29/02B01D29/36
    • B01D29/096B01D29/19B01D2201/204
    • To seal the top cover of a vacuum travelling web filter, the top cover is lowered, by gravity, with a depending rim fitting against an upstanding rim of a filtrate chamber pan; the contaminant chamber above the filter web is closed off, and supply of filtrate is inhibited. Upon starting of the pump, a vacuum will result within the two chambers, drawing the cover tightly against the filtrate pan and, when a sufficient vacuum has been reached indicative of sealing engagement, supply of contaminant can be opened to draw contaminant into the upper chamber. As the filter cake builds up, further change in pressure in the contaminant chamber will result which, when a predetermined operating pressure level is reached, causes interruption of supply of contaminated fluid, and opening of an air vent valve to dry the resulting filter cake. Sealing fluid can be introduced between the engaging rims of the cover and the filtrate holding pan, between which rims the filter web is interposed, for example by introducing filtered fluid into a groove between the rims, or by introducing an inert gas. Preferably, filtered fluid is used which will be drawn back to the pump upon pump operation. A bypass line of filtered fluid to the pump prevents dry running thereof.
    • 为了密封真空行进网状过滤器的顶盖,顶盖通过重力降低,其具有靠近滤液室盘的直立边缘的悬垂边缘; 过滤网上方的污染物室被封闭,滤液的供给被抑制。 在启动泵时,将在两个室内产生真空,将盖子紧紧靠在滤液盘上,并且当达到足够的真空以表示密封接合时,可以打开污染物的供应以将污染物吸入上部室 。 当滤饼积聚时,污染物室中的压力进一步变化将导致当达到预定操作压力水平时,导致污染流体的供应中断,以及打开排气阀以干燥所得到的滤饼。 密封流体可以被引入盖子的接合边缘和滤液保持盘之间,例如通过将过滤的流体引入到边缘之间的沟槽中,或者通过引入惰性气体,过滤网被插入在该过滤网之间。 优选地,使用过滤的流体,其将在泵操作时被抽回到泵中。 过滤流体到泵的旁路管路防止其干燥运行。
    • 7. 发明授权
    • Travelling sheet, flat-bed filter apparatus and system
    • 旅行床,平床过滤器和系统
    • US4233157A
    • 1980-11-11
    • US854192
    • 1977-11-23
    • Peter A. Miller
    • Peter A. Miller
    • B01D29/09B01D29/19B01D29/02B01D29/36
    • B01D29/096B01D29/19B01D2201/204B01D2201/34
    • Fluid supplied from a contaminant tank holding the fluid to be filtered, and delivered at a filtered fluid outlet, is supplied to a filter housing which defines a chamber therein subdivided by a perforate divider plate over which the filter paper is guided, and on which it is supported. The filter paper subdivides the chamber in an upper, or contaminant chamber, and a lower, or filtrate chamber. The lower or filtrate chamber is connected to a vacuum and suction pump. The upper portion of the housing can be raised off the filtrate paper and its support to permit movement of the filtrate paper. The contaminated fluid to be filtered is guided from the contaminant tank to the upper filter chamber, without any intermediate pumping apparatus or the like, all pumping being done by the suction and vacuum pump connected to the filtrate chamber, so that pumping equipment connected to the installation need not handle contaminated materials which may contain obstructing, abrasive or cutting particles, such as metal shavings, husks of plant material used in oil extraction processes, or the like, or toxic or biologically contaminated materials.
    • 从容纳待过滤流体并在过滤的流体出口处输送的污染物箱供应的流体被供应到过滤器壳体,该过滤器壳体限定了其中由穿孔分隔板细分的室,所述穿孔分隔板在该过滤器壳体上被引导, 被支持。 滤纸将腔室细分为上部或污染室以及下部或滤液室。 下部或滤液室连接到真空和抽吸泵。 外壳的上部可以从滤纸及其支撑件上升起,以允许滤纸纸移动。 要被过滤的被污染流体从污染物罐被引导到上部过滤室,没有任何中间泵送装置等,所有的泵送都是通过连接到滤液室的抽吸和真空泵进行的,从而将连接到 安装不需要处理可能含有阻塞,磨损或切割颗粒(例如金属屑,油提取过程中使用的植物材料的外壳等)或有毒或生物污染的材料的污染物质。