Filter device

US10981092B2 · kind B2 · utility

Assignee

• HYDAC PROCESS TECHNOLOGY GMBH · DE

Inventors

• Hans-Juergen Lingen · Rheydt, DE
• Stefan Klein · Meitingen, DE
• Raphael Klein · Los Altos, US
• Sebastian Hrin · Elsdorf, DE

Key dates

• Filing date: Feb 27, 2018
• Grant date: Apr 20, 2021
• Expiry date: Mar 25, 2038

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D2201/4038
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The invention relates to a filter device, in particular for filtering lubrication, consisting of at least one filter insert (19), in which a respective filter material (27) is received and which is provided with fluid passage points (70) that are delimited by wall parts (63) of the filter insert (19) and with a backflush device (37, 49) that has at least one flush nozzle (49), said flush nozzle being movable along the interior of the respective pairable filter insert (19) by means of a hollow drive shaft (37). The invention is characterized in that at least one pair of flush nozzles (49) is provided for each filter insert (19, 21), said flush nozzles having longitudinal slots (73, 74) which are arranged one over the other in the axial direction of the drive shaft (37), wherein the longitudinal slots have an offset relative to one another which runs transversely to the axial direction such that for adjacent flush nozzles (49), at least one part of the longitudinal slot (73) of one flush nozzle (49) overlaps with at least one of the fluid passage points (70) of the pairable filter insert (19, 21) and at least one part of the longitudinal slot (74) of the other flush nozzle (49) at le…