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1. WO2008022702 - FILTER CANDLE FOR A BACKWASH FILTER

Publication Number WO/2008/022702
Publication Date 28.02.2008
International Application No. PCT/EP2007/006850
International Filing Date 02.08.2007
IPC
B01D 29/66 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
29Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/-B01D27/170;   Filtering elements therefor
62Regenerating the filter material in the filter
66by flushing, e.g. counter-current air-bumps
CPC
B01D 29/15
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
29Other filters with filtering elements stationary during filtration, e.g. pressure or suction filters, or filtering elements therefor
11with bag, cage, hose, tube, sleeve or like filtering elements
13Supported filter elements
15arranged for inward flow filtration
B01D 29/52
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
29Other filters with filtering elements stationary during filtration, e.g. pressure or suction filters, or filtering elements therefor
50with multiple filtering elements, characterised by their mutual disposition
52in parallel connection
B01D 29/66
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
29Other filters with filtering elements stationary during filtration, e.g. pressure or suction filters, or filtering elements therefor
62Regenerating the filter material in the filter
66by flushing, e.g. counter-current air-bumps
B01D 29/902
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
29Other filters with filtering elements stationary during filtration, e.g. pressure or suction filters, or filtering elements therefor
88having feed or discharge devices
90for feeding
902containing fixed liquid displacement elements or cores
B01D 29/925
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
29Other filters with filtering elements stationary during filtration, e.g. pressure or suction filters, or filtering elements therefor
88having feed or discharge devices
92for discharging filtrate
925containing liquid displacement elements or cores
Applicants
  • DÜRR ECOCLEAN GMBH [DE]/[DE] (AllExceptUS)
  • KÄSKE, Egon [DE]/[DE] (UsOnly)
Inventors
  • KÄSKE, Egon
Agents
  • HÖRNER, Andreas
Priority Data
10 2006 039 508.523.08.2006DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) FILTERKERZE FÜR EIN RÜCKSPÜLFILTER
(EN) FILTER CANDLE FOR A BACKWASH FILTER
(FR) BOUGIE FILTRANTE POUR FILTRE À LAVAGE À CONTRE COURANT
Abstract
(DE)
Um eine Filterkerze für ein Rückspülfilter zum Filtrieren eines Fluids, die einen von einem Filtermedium umgebenen Filterkerzeninnenraum umfasst, zu schaffen, deren Filtermedium in der Rückspülphase besonders wirksam und gleichmäßig abreinigbar ist, wird vorgeschlagen, dass die Filterkerze einen in dem Filterkerzeninnenraum angeordneten Rückspülstromstaukörper umfasst, der beim Rückspülen der Filterkerze durch den Rückspülstrom in einer Längsrichtung der Filterkerze bewegbar ist und eine lokale Erhöhung des Staudrucks des Rückspülstroms erzeugt, wobei der Rückspülstromstaukörper beim Rückspülen der Filterkerze nicht an dem Filtermedium anliegt.
(EN)
The invention relates to a filter candle for a backwash filter for filtering a fluid, said filter candle comprising a filter candle interior which is surrounded by a filter medium. The aim of the invention is to create a filter candle the filter medium of which can be cleaned in the backwash phase in a particularly effective and even manner. For this purpose, the filter candle comprises a backwash flow baffle element which can be displaced in a longitudinal direction of the filter candle by the backwash flow caused when the filter candle is backwashed and effects a local increase of the baffle pressure of the backwash flow. The backwash flow baffle element does not rest on the filter medium when the filter candle is backwashed.
(FR)
L'invention vise à créer une bougie filtrante pour filtre à lavage à contre courant, destinée à filtrer un fluide et dotée d'un espace intérieur entouré d'un milieu filtrant qui peut être nettoyé de manière particulièrement homogène et efficace dans la phase de lavage à contre courant. A cet effet, la bougie filtrante comporte un élément de retenue du flux de contre courant disposé dans l'espace intérieur de la bougie filtrante, lequel élément, lorsque le flux de contre courant traverse la bougie filtrante, peut être déplacé dans le sens longitudinal de ladite bougie et générer ainsi une augmentation locale de la pression de retenue du flux de contre courant, ledit élément de retenue du flux de contre courant n'étant pas en contact avec le milieu filtrant lors du lavage à contre courant de la bougie filtrante.
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