公开(公告)号：US06605216B1

公开(公告)日：2003-08-12

申请号：US09889868

申请日：2001-07-20

Applicant: Ilan Lederman

Inventor： Ilan Lederman

IPC: B01D2400

CPC classification number: B01D29/036 ,  B01D24/165 ,  B01D24/4668 ,  B01D24/4694 ,  B01D2201/086 ,  B01D2201/188

Abstract: A compact, rapid upflow deep media filter for removing suspended solids from a liquid flow, which includes: a filter casing having a liquid inlet port, a liquid outlet port, and a filter bed composed of a volume of granular filter media and located between the inlet port and the outlet port; and a screen, selectably movable between a first operative position and a second operative position within the filter casing, whereat in the first operative position the screen maintains the filter bed in a packed state so as to permit filtration therethrough of a liquid flow from the inlet port to the outlet port, and whereat in the second operative position the screen does not maintain the filter bed in a packed state such that in the presence of a liquid flow from the inlet port to the outlet port the volume of filter media expands so as to enable separation therefrom of suspended solids accumulated during filtration of the liquid flow therethrough.

Abstract translation: 一种用于从液体流中除去悬浮固体的紧凑型快速向上流动的深度介质过滤器，其包括：过滤器壳体，其具有液体入口，液体出口和由一定体积的颗粒过滤介质组成的过滤床， 入口和出口; 以及屏幕，可选择地在过滤器壳体内的第一操作位置和第二操作位置之间移动，其中在第一操作位置，筛网将过滤床保持在挤压状态，以允许从入口流过液体流 端口到出口，并且在第二操作位置，筛网不将过滤床保持在压缩状态，使得在存在从入口到出口的液体流的情况下，过滤介质的体积膨胀，从而 以使其能够与在其中流过的液体流过滤期间积聚的悬浮固体分离。