Filter

US6347712B1 · kind B1 · utility

Assignee

• HYDAC FILTERTECHNIK GMBH · DE

Inventors

• Harald Mees · Lebach, DE
• Michael Sakraschinsky · Sankt Ingbert, DE

Key dates

• Filing date: Sep 17, 1998
• Grant date: Feb 19, 2002
• Expiry date: Sep 17, 2018

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D2201/4084
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A filter with a multi-piece filter body has a filter head connected to a filter pot and has at least one filter element. The filter element has a support tube surrounded by a filter mat. The filter mat free ends have element mountings. One of the element mounting is rigidly connected to the support tube and can be placed in contact with the filter head. An intermediate member is arranged, at least at that end of the filter element mounting connected to the filter head, between that element mounting and that end of the filter mat, and can be removed along with the filter mat from the support tube which remains connected to the filter head. Axial support of the end caps of the cylindrical filter element is achieved in that a possible fluid passage point, in particular a gap which can be closed after the start of operation by the resulting fluid differential pressure, is provided in the axial mounting direction at least between one part of the intermediate members and the associated filter element mounting, when a filter mat is mounted on the support tube, providing reliable control also of high differential pressures.