Patent · US Active

Filtering apparatus

US9855520B2 · kind B2 · utility

0Cited by

2References

16Claims

0Family size

Assignee

HYDAC PROCESS TECHNOLOGY GMBH · DE

Inventors

Ralf Wnuk · Bexbach, DE
Jörg Hermann Gerstner · Ettlingen, DE
Thomas Böttcher · Boynton Beach, US
Thomas Morawietz · Erbach, DE

Key dates

Filing date	Apr 26, 2012
Grant date	Jan 2, 2018
Priority date	—
Expiry date	Mar 28, 2034

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D29/668
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A filtering apparatus has a plurality of filtering elements (9) in a filter housing (1), a filter inlet (45) and a filter outlet (43). During the filtration operation, one of the filtering elements (9) can be back-flushed by a back-flushing device (13, 21). The back-flushing device has a pressure control device (13) including a hydraulic accumulator (13). One accumulator fluid chamber (67) can be filled during the filtration operation with a quantity of filtered fluid and can be connected for a back-flushing operation via a back-flushing guide (21) to the clean side (59) of the filtering clement (9) to be cleaned. Another accumulator fluid chamber (79) can be subjected to a media pressure.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.