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1. WO2001056681 - CLEANING DEVICE FOR WASTE WATER

Publication Number WO/2001/056681
Publication Date 09.08.2001
International Application No. PCT/NO2000/000032
International Filing Date 03.02.2000
Chapter 2 Demand Filed 03.09.2001
IPC
B01D 33/04 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
33Filters with filtering elements which move during the filtering operation
04with filtering bands or the like supported on cylinders which are impervious for filtering
CPC
B01D 2201/34
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2201Details relating to filtering apparatus
34Seals or gaskets for filtering elements
B01D 2201/48
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2201Details relating to filtering apparatus
48Overflow systems
B01D 33/04
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
33Filters with filtering elements which move during the filtering operation
04with filtering bands or the like supported on cylinders which are impervious for filtering
B01D 33/056
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
33Filters with filtering elements which move during the filtering operation
056Construction of filtering bands or supporting belts, e.g. devices for centering, mounting or sealing the filtering bands or the supporting belts
B01D 33/50
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
33Filters with filtering elements which move during the filtering operation
44Regenerating the filter material in the filter
48by flushing, e.g. counter-current air-bumps
50with backwash arms, shoes or nozzles
B01D 33/722
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
33Filters with filtering elements which move during the filtering operation
70having feed or discharge devices
72for feeding
722containing fixed liquid displacement elements or cores
Applicants
  • SALSNES FILTER AS [NO]/[NO] (AllExceptUS)
  • FOSSENG, Audun [NO]/[NO] (UsOnly)
Inventors
  • FOSSENG, Audun
Agents
  • CURO AS
Priority Data
Publication Language English (en)
Filing Language Norvegian (NO)
Designated States
Title
(EN) CLEANING DEVICE FOR WASTE WATER
(FR) DISPOSITIF D'EPURATION POUR EAUX RESIDUAIRES
Abstract
(EN) Cleaning device having an endless filtering belt (31) guided through a waste water container (33) for filtering of waste water. The filtering belt is guided over a series turn rollers (32, 34, 36, 37) so that the belt in a certain region runs substantially horizontally with the filtrate faced downwards. Within this region there is a rod shaped blowoff device (43) for blowing air towards the filtering belt. Below the blowoff device (44) there is arranged a screw conveyor (42) for removing residues dislodged from the filter mesh. The filtering belt (31) is located adjacent to a transmission belt (51) and is pressed against the same by a clamping rail (58) within the rising section (38) of the filtering belt. The device is provided with a control device (4) adapting the filtering belt movement with the waste water supply, thus keeping the waste water surface below a certain level to provide a high degree of dewatering within the upwards rising section of the filtering belt (31). The blowoff device (43) is shaped to produce a knife shaped air beam directed towards the filtering belt from a sufficiently short distance to effect substantially full penetration through the openings of the filtering belt. The lateral edges of the filtering belt are covered by a tight cover band (66) pressed downwards by a soft elastic pressure lip (64).
(FR) L'invention concerne un dispositif d'épuration comprenant une courroie de filtrage sans fin (31) guidée à travers un récipient contenant des eaux résiduaires (33) en vue d'un filtrage de ces eaux résiduaires. Cette courroie de filtrage est guidée sur des rouleaux en série (32, 34, 36, 37) de façon à se déplacer dans une zone donnée de manière sensiblement horizontale, le filtrat restant orienté vers le bas. Cette zone comprend un dispositif de purge en forme de tige (43) servant à souffler de l'air vers la courroie de filtrage. Un transporteur à vis (42) est disposé en dessous de ce dispositif de purge (44), et permet d'enlever les résidus qui se sont échappés de la toile filtrante. Ladite courroie de filtrage (31) est située au voisinage d'une courroie de transmission (51) et pressée contre cette dernière au moyen un rail de serrage (58) à l'intérieur de la partie montante (38) de la courroie de filtrage. Ce dispositif est pourvu d'un dispositif de commande (4) régulant le mouvement de la courroie de filtrage selon le volume des eaux résiduaires acheminées, ce qui permet de maintenir la surface de ces eaux résiduaires en dessous d'un certain niveau et d'obtenir un degré élevé de déshydratation à l'intérieur de la partie montante de la courroie de filtrage (31). La conception du dispositif de purge (43) permet d'obtenir un courant d'air en forme de pointe dirigé vers la courroie de filtrage depuis un point suffisamment proche pour entraîner une pénétration quasi totale dans les ouvertures de la courroie de filtrage. Les bords latéraux de la courroie de filtrage sont recouverts d'une bande de garniture étroite (66) pressée vers le bas par un élément de pression élastique souple.
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