公开(公告)号：US3767048A

公开(公告)日：1973-10-23

申请号：US3767048D

申请日：1971-08-20

Applicant: PASSAVANT WERKE

Inventor： PRENGEMANN H

IPC: B01D24/30 ,  B01D37/03 ,  B01J47/10 ,  B01D33/00 ,  B01D33/30

CPC classification number: B01J47/10 ,  B01D24/30 ,  B01D24/4689 ,  B01D37/03

Abstract: A method and apparatus for filtering liquids in which the liquid to be filtered is passed upwardly through a downwardly moving filter bed of granular filter material. The effective crosssection of the filter bed bottom is increased by forming up into this bottom a cavity into which the liquid is introduced for passage through the bed, and through which the lowermost granular filter material of the bed is removed. The cavity may be formed structurally with fixed, annular, conically arranged supports between which the granular filter material and the liquid pass downwardly and upwardly, respectively.

Abstract translation: 一种用于过滤液体的方法和装置，其中待过滤的液体向上通过颗粒过滤材料的向下移动的过滤床。 过滤床底部的有效横截面通过在该底部形成空腔而增加，液体引入其中以通过床，并且通过该空腔去除床的最低颗粒过滤材料。 空腔可以在结构上形成有固定的，环形的，锥形布置的支撑件，颗粒过滤材料和液体之间分别向下和向上。