公开(公告)号：US20230226471A1

公开(公告)日：2023-07-20

申请号：US18029727

申请日：2021-10-01

Applicant: John Edgar SCRAGG

Inventor： John Edgar SCRAGG

IPC: B01D35/027 ,  B01D27/00 ,  B01D35/153 ,  B01D35/16 ,  B01D36/00

CPC classification number: B01D35/0276 ,  B01D27/00 ,  B01D35/153 ,  B01D35/16 ,  B01D36/006 ,  B01D2201/204

Abstract: Contaminants are removed from a liquid (12) in a storage vessel (14), by using a working liquid to varying the volume of a working cavity (44) sequentially inside a working vessel (16) and using the variations in the volume of the working cavity (44) to vary the volume of a suction cavity (20). The working cavity (44) is defined in a working vessel (18) and the suction cavity (20) is defined in a suction vessel (26) and the vessels (16, 18) are configured so that the volumes of their internal cavities (20, 44) are inter-dependent. Using non-return mechanisms (26, 36) to ensure one-way from the storage vessel (14) via the suction cavity (20) to a filter (28) and back to the storage vessel (14).