公开(公告)号：US06315897B1

公开(公告)日：2001-11-13

申请号：US09577372

申请日：2000-05-23

Applicant: Kevin Maxwell

Inventor： Kevin Maxwell

IPC: B01D2422

CPC classification number: B01D24/12 ,  B01D2201/48 ,  C02F2103/001 ,  E03F1/002 ,  E03F11/00 ,  Y02A20/216

Abstract: A rain water run-off filtering system includes a tank for holding and filtering run-off water, said tank being generally cylindrical with a horizontal axis, and having at least one manway for the introduction of water and a filter media. A horizontal grate disposed at the bottom of the tank, supports a bed of gravel and sand, and incoming water is directed onto the sand bed, thence percolating through the sand to a space below the grate. The outflow of water from the tank is regulated by a baffle plate bounding the sand bed. This plate has small holes for normally producing a small outflow, and at least one large aperture for permitting water to flow through the tank, without percolating through the sand, during extremely heavy rains.

Abstract translation: 雨水径流过滤系统包括用于保持和过滤径流水的罐，所述罐通常为水平轴的圆柱形，并且具有用于引入水和过滤介质的至少一个通道。 设置在罐底部的水平炉排支撑着沙砾和沙子，并且进入的水被引导到砂床上，然后通过沙子渗透到炉排下方的空间中。 来自水箱的水流出由围绕砂床的挡板调节。 该板具有用于通常产生小的流出物的小孔，以及至少一个用于允许水在非常大的降雨期间渗透通过罐而不渗透沙子的大孔。