公开(公告)号：US07105090B2

公开(公告)日：2006-09-12

申请号：US10726012

申请日：2003-12-01

Applicant: Kim Poh Choo

Inventor： Kim Poh Choo

IPC: B01D35/12

CPC classification number: A01K63/045 ,  B01D29/117 ,  B01D29/58 ,  B01D29/668 ,  B01D29/96 ,  B01D2201/02 ,  B01D2201/208

Abstract: A filter has three filter elements, e.g., screens, for trapping particulate material while allowing passage of a fluid. The second sides of each of the first and second screens are connected to an intermediate passage, and the second side of the third screen, and the intermediate passage, are connected to a filter outlet port. The filter has two alternately selectable configurations. In a first configuration, the first side of the first screen is connected to a filter inlet port, and the first side of the second screen is connected to the first side of the third screen. In the second configuration the first side of the second screen is connected to the inlet port, and the first side of the first screen is connected to the first side of the third screen. The first and second screens alternately filter particulates which are subsequently flushed and then trapped by the third screen for periodic removal.

Abstract translation: 过滤器具有三个过滤器元件，例如筛网，用于捕获颗粒材料，同时允许流体通过。 第一和第二屏幕中的每一个的第二侧连接到中间通道，并且第三屏幕的第二侧和中间通道连接到过滤器出口。 过滤器有两个可交替选择的配置。 在第一配置中，第一屏幕的第一侧连接到过滤器入口，并且第二屏幕的第一侧连接到第三屏幕的第一侧。 在第二配置中，第二屏幕的第一侧连接到入口端口，第一屏幕的第一侧连接到第三屏幕的第一侧。 第一和第二屏幕交替地过滤微粒，随后被冲洗，然后被第三屏幕捕获以便周期性地去除。