公开(公告)号：US3730347A

公开(公告)日：1973-05-01

申请号：US3730347D

申请日：1971-11-22

Applicant: DOW CHEMICAL CO

Inventor： GIAMPALMI J ,  OLDFORD W

IPC: B01D29/00 ,  B01D27/02 ,  B01D27/04

CPC classification number: B01D29/58 ,  B01D24/047 ,  B01D27/148 ,  B01D29/21 ,  B01D2201/12

Abstract: An improved dry cleaning solvent filter cartridge comprising for the greater part conventional filter cartridge configuration and construction, i.e., an outer tubular element of accordion plaited filter paper and an inner tubular bed of activated charcoal all enclosed in a perforated outer cylindrical metal shell with a perforated concentric center tube serving as the filtered solvent outlet, contains a perforated unidirectional lockable annular metal retainer on the top of the charcoal bed and a cooperating locking section in either or both tubular walls of the charcoal bed, said retainer locking in place when pressed down on the bed by engagement between one or both of its inner and outer peripheral edges and inward projections on the corresponding wall or walls holding the charcoal bed.

Abstract translation: 一种改进的干洗溶剂滤筒，其中包括大部分常规的滤筒结构和结构，即手风琴编织过的滤纸的外部管状元件和活性炭的内部管状载体，全部封闭在穿孔的外部圆柱形金属壳体中， 用作过滤溶剂出口的同心中心管在木炭床的顶部上包​​含一个穿孔的单向可锁定的环形金属保持器，以及在木炭床的任一个或两个管状壁中的协作锁定部分，所述保持器在压下时锁定就位 该床通过在其内周边缘和外周边缘中的一个或两个上的接合以及在相应的壁或保持木炭床的壁上的向内突出部。