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1. WO1996041670 - FILTER DEVICE

Publication Number WO/1996/041670
Publication Date 27.12.1996
International Application No. PCT/NL1996/000231
International Filing Date 10.06.1996
Chapter 2 Demand Filed 29.11.1996
IPC
B01D 29/25 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
11with bag, cage, hose, tube, sleeve or like filtering elements
13Supported filter elements
23arranged for outward flow filtration
25open-ended
CPC
B01D 29/25
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
23arranged for outward flow filtration
25open-ended ; the arrival of the mixture to be filtered and the discharge of the concentrated mixture are situated on both opposite sides of the filtering element
B01D 29/60
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
60integrally combined with devices for controlling the filtration
B01D 29/606
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
60integrally combined with devices for controlling the filtration
606by pressure measuring
B01D 29/6438
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
64by scrapers, brushes, ; nozzles; , or the like, acting on the cake side of the filtering element
6438nozzles
B01D 29/72
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
70by forces created by movement of the filter element
72involving vibrations
B01D 29/904
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
904directing the mixture to be filtered on the filtering element in a manner to clean the filter continuously
Applicants
  • DEFIL N.V. HOLLAND INTERTRUST (ANTILLES) N.V. [NL]/[NL] (AllExceptUS)
  • DEMMERS, Petrus, Adrianus, Cornelis, Maria [NL]/[NL] (UsOnly)
Inventors
  • DEMMERS, Petrus, Adrianus, Cornelis, Maria
Agents
  • 'T JONG, Bastiaan, Jacobus
Priority Data
100053008.06.1995NL
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) FILTER DEVICE
(FR) DISPOSITIF DE FILTRE
Abstract
(EN)
The present invention relates to a method for filtering out of a liquid at least one solid substance comprised therein with mainly tube-shaped filter means, said method comprising consecutively: supplying said fluid containing said substance via axial supply means to said filter means; filtering said fluid containing said substance where said substance remains in said filter means as residue; draining away said fluid; and removing said residue via axial closable discharge means opposite to said supply means out of said filter means, where compressing a predetermined amount of residue to the shape of mainly a solid bar under the influence of pressure in said supplied fluid, when filtering; opening said closable discharge at a predetermined moment; and removing said bar under influence of pressure on said bar exerted by said fluid. With the use of a filter device according to the present invention a filtering process does not have to be interrupted in order to clean the filter means, since a compact accumulation of residue formed during a filtering process under pressure from the supplied flow of liquid is ejected in its entirety by opening the closeable second discharge means, whereafter the filtering process can be immediately resumed.
(FR)
L'invention concerne un appareil pour séparer par filtration au moins une substance solide présente dans un liquide, constitué d'un filtre de forme sensiblement tubulaire, ainsi qu'un procédé consistant successivement à amener le fluide contenant la substance en question axialement dans le filtre; à filtrer le fluide contenant cette substance pour que cette dernière reste dans le filtre en tant que résidu; à évacuer le fluide par drainage; à évacuer du filtre le résidu par un système d'évacuation axial que l'on peut fermer et qui se trouve en face de l'alimentation, après compression d'une quantité prédéterminée du résidu pour lui faire prendre sensiblement la forme d'une barre solide, par l'action de la pression du fluide d'alimentation, lors de la filtration; à ouvrir le système d'évacuation refermable à un moment prédéterminé; et à enlever la barre solide sous l'effet de la pression exercée par le fluide sur la barre. Lorsque le filtre de l'invention est en service, il n'est pas nécessaire d'interrompre son fonctionnement pour le nettoyer, puisque le résidu compact accumulé durant l'opération de filtration sous pression du flux d'alimentation est éjecté en totalité par l'ouverture du second système d'évacuation de liquide, après quoi la filtration peut reprendre immédiatement.
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