Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Material level or thickness responsive
Patent
1985-11-29
1987-03-17
Fisher, Richard V.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Material level or thickness responsive
210 90, 210 91, 210137, 210138, B01D 3500, B01D 2902
Patent
active
046505717
ABSTRACT:
In an industrial filter apparatus having a tank with an inlet receiving contaminated effluent from an industrial washing device and a discharge outlet connected to the washing device for recirculating washing fluids, a continuous filter spanning the tank interposed between the inlet and outlet, a continuous drive connected to the filter, a motor connected to the drive and a pump delivering filtered fluids from the outlet to the washing device, an automatic filter media indexer comprises a sensing arm rotatably journaled upon the tank having a contactor engagable with the filter on its downstream side connected by a link and a pull rod to a normally open switch connected to a power source and to the motor. A switch actuator on the pull rod is in registry with the switch, and an adjustable spring normally biases the pull rod. The differential between the liquid levels upon opposite sides of the filter increasing to a predetermined level as it becomes clogged, effecting a proportional deflection of the filter and causing movement of the sensing arm to close the switch.
REFERENCES:
patent: 2867325 (1959-01-01), Hirs
patent: 3939796 (1976-02-01), Smith et al.
patent: 4054521 (1977-10-01), Winzen
Evans Linda S.
Fisher Richard V.
H. R. Black Company
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