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1. WO2000043097 - DEEP MEDIA FILTER

Publication Number WO/2000/043097
Publication Date 27.07.2000
International Application No. PCT/IL2000/000033
International Filing Date 18.01.2000
Chapter 2 Demand Filed 16.08.2000
IPC
B01D 24/16 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
24Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
02with the filter bed stationary during the filtration
10the filtering material being held in a closed container
16Upward filtration
B01D 29/03 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
01with flat filtering elements
03self-supporting
CPC
B01D 2201/086
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2201Details relating to filtering apparatus
08Regeneration of the filter
086using fluid streams co-current to the filtration direction
B01D 2201/188
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2201Details relating to filtering apparatus
18Filters characterised by the openings or pores
188Multiple filtering elements having filtering areas of different size
B01D 24/165
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
24Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
02with the filter bed stationary during the filtration
10the filtering material being held in a closed container
16Upward filtration
165the filtering material being supported by pervious surfaces
B01D 24/4668
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
24Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
46Regenerating the filtering material in the filter
4668by moving the filtering element
B01D 24/4694
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
24Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
46Regenerating the filtering material in the filter
4694containing filter material retaining means (e.g. screens, balls) placed on the surface of the filter material
B01D 29/036
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
01with flat filtering elements
03self-supporting
036ring shaped
Applicants
  • SINOMED LTD. [IL/IL]; P.O. Box 17373 Beer Sheva 84990 84990 Sde Boker, IL (AllExceptUS)
  • LEDERMAN, Ilan [IL/IL]; IL (UsOnly)
Inventors
  • LEDERMAN, Ilan; IL
Agents
  • JEREMY M. BEN-DAVID & CO. LTD.; Har Hotzvim Hi-Tech Park P.O. Box 45087 91450 Jerusalem, IL
  • BEN-PORAT, Moshe; Jeremy M. Ben-David & CO. LTD Har Hotzvim Hi-Tech Park P.O. Box 45087 91450 Jerusalem, IL
Priority Data
12817221.01.1999IL
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) DEEP MEDIA FILTER
(FR) FILTRE A FORTE HAUTEUR DE COUCHES
Abstract
(EN)
A compact, rapid upflow deep media filter (10) for removing suspended solids from a liquid flow, which includes: a filter casing (12) having a liquid inlet port (16), a liquid outlet port (18), and a filter bed (26) composed of a volume of granular filter media (24) and located between the inlet port and the outlet port; and a screen (32), selectably movable between a first operative position and a second operative position within the filter casing, whereat in the first operative position the screen maintains the filter bed in a packed state so as to permit filtration therethrough of a liquid flow from the inlet port to the outlet port, and whereat in the second operative position the screen does not maintain the filter bed in a packed state such that in the presence of a liquid flow from the inlet port to the outlet port the volume of filter media expands so as to enable separation therefrom of suspended solids accumulated during filtration of the liquid flow therethrough.
(FR)
L'invention concerne un filtre (10) à forte hauteur de couches, compact, à vitesse rapide de filtration, destiné à enlever des solides en suspension à partir d'un écoulement liquide. Ce filtre comprend : un boîtier (12) de filtre présentant un orifice d'entrée (16) de liquide, un orifice de sortie (18) de liquide, un lit filtrant (26) composé d'un certain volume de couches filtrantes granulaires (24) situées entre les orifices d'entrée et de sortie, ainsi qu'un écran (32), mobile au choix, dans le boîtier, entre une première position fonctionnelle et une seconde position fonctionnelle. Lorsque cet écran est placé dans la première position fonctionnelle, il maintient le lit filtrant à l'état tassé, de manière à permettre la filtration à travers ce lit d'un écoulement liquide, de l'orifice d'entrée vers l'orifice de sortie, et lorsqu'il est placé dans la seconde position fonctionnelle, il ne maintient pas ce filtre à l'état tassé, de sorte qu'en présence d'un écoulement liquide entre l'orifice d'entrée et l'orifice de sortie, le volume des couches filtrantes augmente, permettant ainsi la séparation, à partir de l'écoulement, de solides en suspension accumulés lors de la filtration de l'écoulement liquide à travers les couches.
Also published as
Latest bibliographic data on file with the International Bureau