Liquid purification or separation – Flow – fluid pressure or material level – responsive – Discharge of treated material
Patent
1988-01-25
1989-08-29
Hruskoci, Peter
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Discharge of treated material
210169, 2104162, 119 5, 137143, 137216, A01K 6300
Patent
active
048614653
ABSTRACT:
Apparatus for a recirculating aquarium water supply system having a tank with a discharge control device for maintaining the level of the water in the tank and incorporating an overflow receptacle in the tank and a prefilter receptable outside the tank filled by a siphon from the overflow receptacle, the prefilter receptacle having a sponge-like filter serving as a divider fitted thereinbetween the discharge of the siphon and drain of the prefilter receptacle, the drain discharging onto a diffuser plate which drips the water onto a cylindrical filter made from a wrapping of fibrous batting material which is saturated by the water and drips through a gravel filled container which discharges through a labyrinthian path in several interconnected chambers to a pump container from which the water is pumped back into the tank by a U-shaped nozzle which below the bend of the U has a series of slots formed therein for discharging a slow moving spray over the top layer of water in the tank, the water also discharging through the lower end of the leg of the nozzle. The nozzle serves as a water level maintaining device by aspirating air through said slots to prevent the nozzle from acting as a reverse siphon when the pump stops.
REFERENCES:
patent: 758188 (1904-04-01), Miller
patent: 3688907 (1972-09-01), Oravec
patent: 4684462 (1987-08-01), Augustyniak
patent: 4708792 (1987-11-01), Takarabe et al.
Hruskoci Peter
Kowalik John J.
Upton Christopher
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