Liquid purification or separation – Flow – fluid pressure or material level – responsive – Filter cleaning
Patent
1980-05-09
1981-07-14
Adee, John
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Filter cleaning
210108, B01N 2938
Patent
active
042785405
ABSTRACT:
A backwashable filtering device is described of the type including a housing, a filter body, a backwash nozzle having a nozzle inlet disposed adjacent to the upstream surface of the filter body, and pressure sensor means for sensing the pressure drop across the filter body and effective, upon sensing a predetermined pressure drop, to initiate a backwashing operation by connecting the backwash nozzle to the atmosphere and initiating relative rotary movement between the filter body and the backwash nozzle. The filtering device further includes a position sensor for sensing the home angular position of the filter body with respect to the backwash nozzle, and a control effective, only when said home angular position is sensed, for terminating the backwash operation.
REFERENCES:
patent: 4042504 (1977-08-01), Drori
patent: 4045745 (1977-08-01), Drori
Adee John
Barish Benjamin J.
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