Liquid purification or separation – Filter – Movable medium
Patent
1979-02-27
1980-03-04
Cuchlinski, Jr., William A.
Liquid purification or separation
Filter
Movable medium
210400, B01D 3304
Patent
active
041916530
ABSTRACT:
An endless driven belt strainer adapted for use as a porous barrier in a channel containing a flowing liquid, such as a channel supplying raw sewage to a treatment plant. The belt strainer is composed of a number of endless porous wire or plastic screen strips arranged in side-by-side relation and which pass over a driving roller, guide rollers and a tension adjusting roller, all of which rotate in a frame having an upwardly inclined bottom portion which slopes away from the direction of flow of the liquid to be cleansed, and a top portion located above the liquid level and equipped with a cleaning means for removing foreign matter from the belt strainer as it commences its return travel. Means is provided for twisting each porous strip 180.degree. during the initial part of its return travel above the flowing stream, so that during a subsequent downward travel of these screen portions the freshly cleansed liquid will pass through this downwardly traveling flight portion for removing any debris clinging to its outer surface. An additional endlessly driven cleaning device operates in front of the upwardly traveling screening surface for removing particles which cannot pass through the screen and are too large or of a nature such that they will not be taken out of the channel by the screen alone.
REFERENCES:
patent: 450094 (1891-04-01), Black
patent: 3075333 (1963-01-01), Revell
patent: 3302795 (1967-02-01), Jacobs
patent: 4042507 (1977-08-01), Langmack
Cuchlinski Jr. William A.
Randolph John N.
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