公开(公告)号：US4219423A

公开(公告)日：1980-08-26

申请号：US946139

申请日：1978-09-27

Applicant: Clarence G. Smith, Jr.

Inventor： Clarence G. Smith, Jr.

IPC: B01D29/00 ,  E04H3/16

CPC classification number: B01D29/54 ,  B01D29/15 ,  B01D2201/12 ,  B01D2201/182 ,  B01D2201/208 ,  Y10S261/75

Abstract: A pump and filter assembly suitable for circulating and filtering swimming-pool water is provided with a normally closed air-injection valve to aerate water flowing into a filtration element in the filter. When the exterior surfaces of the element become covered with dirt or filter cake, the air-injection valve and an auxiliary filter outlet are opened. Air aspirated through the valve into the filter inlet water stream causes a churning cleaning action which dislodges the dirt, and the debris-laden water is discharged through the auxiliary outlet without passing through the element.

Abstract translation: 适用于循环和过滤游泳池水的泵和过滤器组件设置有常闭空气喷射阀，以使流入过滤器中的过滤元件的水充气。 当元件的外表面被污垢或滤饼覆盖时，打开空气喷射阀和辅助过滤器出口。 通过阀吸入进入过滤器入口水流的空气引起​​搅拌清洁作用，从而排除污垢，并且残留碎屑的水通过辅助出口排出，而不会通过该元件。