Filtering apparatus for separating solid and suspended matter fr

Details Filtering apparatus for separating solid and suspended matter fr Filtering apparatus for separating solid and suspended matter fr

1990-07-10

1992-11-17

Hruskoci, Peter

Liquid purification or separation

With heater or heat exchanger

For filter

210408, 210411, B01D 3518, B01D 3522

Patent

active

051640791

ABSTRACT:
A filtering apparatus for separating solid and suspended matter from liquids which includes a cylindrical housing, a cylindrical filter basket coaxially installed therein and delimiting a space I (FIG. 1) receiving the liquid to be filtered relative to an external annular space II receiving the filtratre, and a backflushing device axially displaceable by means of a drive and including at least one piston disc provided with a channel connecting the external annular space II, via perforations provided in the filter basket, with a hollow space III of a central tube provided coaxially with the filter basket and carrying the piston disc. The piston disc lies at the interior surface of the filter basket via seals. In order to be able to filter non-lubricating, aggressive and abrasive media by safeguarding a long service life and a low susceptance to failure of the filtering apparatus, the central tube constitutes a movable structural unit together with the piston disc and a discharge tube for backflush liquid running into the cavity III of the central tube. A dynamic seal is provided between the axially movable central tube and the housing. The drive engages at the closed end of the central tube carrying the discharge tube.

REFERENCES:
patent: 4156651 (1979-05-01), Mehoudar

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