Liquid purification or separation – Structural installation – Flume stream type
Patent
1982-04-09
1984-09-18
Spitzer, Robert H.
Liquid purification or separation
Structural installation
Flume stream type
210162, 210413, B01D 3502
Patent
active
044722737
ABSTRACT:
An improved filter lift system including generally vertical filtering member with a plurality of generally vertical elements or rearward sloping elements, bars or strips of material positioned across a fluid stream, and teeth lift mechanism with teeth positioned between the filtering elements for lifting debris positioned forward, adjacent and upstream to the filter lift system. The debris removal means includes the teeth that lift and dump the debris and claws that clean and pull debris off the teeth. In phase one, the teeth lifting mechansim moves the teeth upward through a rearward sloping lower portion of the face of the filtering element to prevent compacting of debris below the teeth. The teeth lifting mechanism moves the teeth upward. In a second phase, the distal upstream portion of the teeth project out from between the filtering elements on the upstream side to pick up debris during the debris removal portion of the cycle of operation. During the third phase, the teeth are movable upward and forward to clean the teeth and filtering elements. This is accomplished by the shape of the teeth and the shape of the filtering elements, and the relative movement therebetween. Then the teeth are moved upwardly and rearwardly during the fourth phase to remove debris from the teeth. Movable claws can be used to scrape debris off the teeth for discharge to a collection point. Thereafter, the teeth are positioned behind the front face, that is, downstream of the forward face of the single row of filtering elements and between the single row of filtering elements, and are moved downwardly during the fifth phase to the forward start position for repeated cyclic movement.
REFERENCES:
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patent: 3347382 (1967-10-01), Quast
patent: 3591006 (1971-07-01), Daferner et al.
patent: 3615012 (1971-10-01), Verbandt
patent: 3909411 (1975-09-01), Angele et al.
patent: 4184957 (1980-01-01), Botsch
patent: 4265750 (1981-05-01), Meunier
patent: 4353797 (1982-10-01), Verbandt
Malin Eugene F.
Spitzer Robert H.
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