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    Extended life dual full-flow and bypass filter
    2.
    发明授权
    Extended life dual full-flow and bypass filter 失效
    延长使用寿命的双重全流量和旁路过滤器

    公开(公告)号：US06319402B1

    公开(公告)日：2001-11-20

    申请号：US09466388

    申请日：1999-12-17

    申请人： Brian W. Schwandt ,  Peter K. Herman ,  David M. Stehouwer

    发明人： Brian W. Schwandt ,  Peter K. Herman ,  David M. Stehouwer

    IPC分类号： B01D2966

    CPC分类号： B01D29/21 ,  B01D29/54 ,  B01D29/60 ,  B01D29/606 ,  B01D29/66 ,  B01D29/925 ,  B01D2201/208 ,  Y10S210/13

    摘要： A cleanable backflushable re-usable dual full-flow and bypass filter includes a full-flow filter element providing filtered primary flow therethrough, a bypass filter element providing filtered secondary flow therethrough, a bypass tube conducting flow therethrough from said bypass filter element to said full-flow filter element, a venturi creating a low pressure zone aiding secondary flow through the bypass tube to assist in pulling the secondary flow through the more restrictive bypass filter element, wherein fluid, whether main fluid flow in the filtering direction or backflushing cleansing fluid flow in the opposite direction, flowing from the bypass tube changes direction at the venturi. During a backflushing cleaning cycle, a backflush deflector at the outlet end of the bypass tube in the venturi creates the directional change by changing axial flow of cleansing fluid through the bypass tube to radial flow at the outlet end of the bypass tube in the venturi and prevents straight-through rectilinear flow of cleansing fluid from the bypass tube to the filter outlet. Jets are provided, jumping the cleansing fluid across a radial gap between the bypass tube and the venturi throat to a region outside of the venturi and within the hollow interior of the full-flow filter element, to disperse and backflush the full-flow filter element.

    摘要翻译： 可清洗的可反吹的可重复使用的双重全流和旁路过滤器包括提供过滤的主流的全流量过滤器元件，提供过滤的二次流的旁路过滤元件，从所述旁路过滤元件传递到所述完全 流过滤元件，文丘里管，其产生低压区，辅助二次流通过旁通管，以帮助拉动二次流通过更严格的旁路过滤器元件，其中流体，主流体是否在过滤方向上流动或反冲洗清洁流体流动 在相反方向上，从旁路管流动，在文丘里管处改变方向。 在反冲洗清洁循环期间，文氏管中旁路管出口端的反吹偏转器通过将净化流体通过旁通管的轴向流动改变为在文丘里管旁通管的出口端处的径向流动而产生方向变化， 防止清洁液从旁路管直接流向直流到过滤器出口。 提供喷射器，将清洁流体跨过旁通管和文丘里喉管之间的径向间隙跳跃到文丘里管外部的区域和全流过滤元件的中空内部，以分散和反冲洗全流过滤元件 。