公开(公告)号：US6139738A

公开(公告)日：2000-10-31

申请号：US265624

申请日：1999-03-10

申请人： Martin C. Maxwell

发明人： Martin C. Maxwell

IPC分类号： B01D29/15 ,  B01D35/26 ,  B01D36/00 ,  B01D27/00

CPC分类号： B01D36/003 ,  B01D29/15 ,  B01D35/26 ,  B01D2201/291 ,  B01D2201/302 ,  B01D2201/34 ,  B01D2201/4015 ,  B01D2201/4046 ,  B01D2201/4076 ,  Y10S210/17

摘要： A filter includes a casing enclosing a filter cartridge and a removable collection bowl. The filter cartridge includes a filter media ring with upper and lower end caps. The lower end cap of the filter cartridge has a ring-shaped member projecting axially downward. The ring-shaped member has an annular portion with radially inward-directed threads, whereby the collection bowl, with radially outward-directed threads, can be removably attached to the cartridge. The ring-shaped member further includes radial flow passages between the threads and the end cap, whereby contaminants may pass from a peripheral region of the filter element interiorly of the ring-shaped member and downwardly into the attached collection bowl. The filter includes an anti-rotation feature, comprising radially outward-directed keys, disposed circumferentially around the annular portion of the ring-shaped member and projecting radially-outward therefrom, and slots formed on the inside surface of the casing. The keys and slots rotationally fix the filter cartridge with respect to the casing when the cartridge is installed in the casing, such that the collection bowl can be threaded onto and off of the cartridge. The collection bowl and ring-shaped member trap a radially-inward directed portion of the casing and a resilient gasket to fluidly-seal the collection bowl to the cartridge.

摘要翻译： 过滤器包括封闭过滤器滤芯和可拆卸收集碗的壳体。 过滤器滤芯包括具有上端盖和下端盖的过滤介质环。 滤筒的下端盖具有向下突出的环状构件。 环形构件具有带径向向内定向的螺纹的环形部分，由此具有径向向外定向的螺纹的收集碗可以可拆卸地附接到盒。 环形构件还包括在螺纹和端盖之间的径向流动通道，由此污染物可以从环形构件内部的过滤元件的周边区域传递到附接的收集碗中。 过滤器包括防旋转特征，包括径向向外定向的键，周向地环绕环形构件的环形部分并且从其径向向外突出，并且形成在壳体的内表面上的槽。 当盒被安装在壳体中时，键和狭槽将滤筒相对于壳体旋转地固定，使得收集碗可以被带入和离开盒。 收集碗和环形构件捕获壳体的径向向内指向的部分和弹性垫圈以将收集碗流体密封到盒。