E - Fixed Constructions – 03 – B
Patent
E - Fixed Constructions
03
B
182/13, 137/75
E03B 5/00 (2006.01) F04B 9/115 (2006.01)
Patent
CA 1164308
ABSTRACT OF THE DISCLOSURE Method and apparatus of delivering fresh brine to a reverse osmosis device by use of main pump and a plurality of interconnected motor pumps using spent brine from the reverse osmosis device as motive fluid for the motor-pump, each motor-pump including a closed cylinder with a reciprocably mov- able piston therein separating the cylinder into motor and pump chambers, each piston having opposite faces of different effective area with the larger piston face being included in the motor chamber and the smaller face in the pump chamber for pressure amplification, said pistons being interconnected for simultaneous movement thereof, the method comprising sequentially supplying spent brine from the reverse osmosis device, through a non-pressure-increasing device, to the motor chambers for piston movement from start to end positions while simultaneously sequentially pumping fresh brine from the associated pump chambers, through a non-pressure-increasing device, to the inlet of the reverse osmosis device for supply- ing the reverse osmosis device with a first quantity of fresh brine for desalination, sequentially supplying fresh brine to the pump chambers while simultaneously sequentially dumping spent brine from the associated motor chambers during return piston movement from end to start positions and through the main pump, supplying the reverse osmosis device with a second quantity of fresh brine for desalination.
388038
Gowling Lafleur Henderson Llp
Sri International
LandOfFree
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