Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Patent
1975-08-08
1977-06-07
Granger, Theodore A.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Responsive to fluid flow
209269, 209365R, 210DIG22, 210389, B01D 3520
Patent
active
040282325
ABSTRACT:
A separator for effecting separation of solid materials from liquids has a filter screen arranged so that in operation liquid passes through that screen and solid materials are retained on and travel along that screen in a first direction. Generator means is provided for subjecting the screen to acoustic pressure waves, the generator means being arranged close to but not touching the screen so that in operation liquid passing through the screen couples acoustic pressure waves from the generator means to the screen. The generator means is an acoustic pressure wave transducer assembly that stretches at least nearly the whole way across the filter screen in a second direction transverse to said first direction. Preferably the generator means produces ultrasonic pressure waves and comprises a casing and a plurality of individual ultrasonic transducers within the casing so that a relatively uniform field of ultrasonic waves is produced over the entire width of the screen. The generator means is adjustable relative to the screen both towards and away from it and in said first direction.
REFERENCES:
patent: 3305481 (1967-02-01), Peterson
patent: 3327401 (1967-06-01), Sigmas et al.
patent: 3387379 (1968-06-01), Goble
patent: 3864249 (1975-02-01), Wallis
Granger Theodore A.
Wallis Separators Limited
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