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公开(公告)号：US10598162B2
公开(公告)日：2020-03-24
申请号：US15298257
申请日：2016-10-20
IPC分类号： F04B1/16 , F04B1/14 , F04B1/12 , F04B53/00 , F04B53/10 , F04B53/14 , C02F1/44 , C02F1/00 , F04B1/143 , F04B1/124 , F04B1/053 , F04B1/0538 , F04B9/04 , F04B7/00 , F04B5/02 , F04B1/0452 , F04B1/0408 , F04B1/0421 , C02F103/08
摘要： A pump in desalination systems has four cylinders, each having a double acting piston. Each cylinder and piston defines a feed chamber and a recovery chamber. The pistons connect to a common drive. The connection to the common drive is such that the pistons reciprocate in a sequence equally spaced in time. Reciprocating valving for each piston is driven by the common drive to be 90 degrees out of phase with the respective piston. The valving connects the recovery chamber alternately to an inlet manifold for an intake stroke of the piston relative to the recovery chamber, and to an outlet manifold for a discharge stroke of the piston relative to the recovery chamber. A brief period of closure coincides with top dead centre and bottom dead centre of the piston, during which the recovery chamber is blocked off from both the inlet and outlet manifolds. The reciprocating valving is midway between its top dead centre and bottom dead centre during the period of closure.
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公开(公告)号：US11378067B2
公开(公告)日：2022-07-05
申请号：US16747587
申请日：2020-01-21
IPC分类号： F04B1/16 , F04B53/14 , F04B53/10 , F04B1/143 , F04B1/124 , F04B53/00 , F04B1/053 , F04B1/0538 , F04B9/04 , F04B7/00 , C02F1/44 , F04B5/02 , F04B1/0452 , F04B1/0408 , F04B1/0421 , C02F103/08 , C02F1/00
摘要： A pump adapted for use in desalination systems that has four cylinders, with a double acting piston in each cylinder. Each cylinder and piston thereby defines a feed chamber and a recovery chamber. The pistons are connected to a common drive. The connection to the common drive is such that the pistons reciprocate in a sequence equally spaced in time. Reciprocating valving for each piston is driven by the common drive to be 90 degrees out of phase with the respective piston.
The valving connects the recovery chamber alternately to an inlet manifold for an intake stroke of the piston relative to the recovery chamber, and to an outlet manifold for a discharge stroke of the piston relative to the recovery chamber. There is a brief period of closure coinciding with top dead centre and bottom dead centre of the piston, during which the recovery chamber is blocked off from both the inlet and outlet manifolds. The reciprocating valving is midway between its top dead centre and bottom dead centre during the period of closure.-
公开(公告)号：US20220356084A1
公开(公告)日：2022-11-10
申请号：US17737917
申请日：2022-05-05
摘要： A reverse osmosis desalination system has a combined displacement pump and displacement pressure recovery motor that propagate feed water with a structurally fixed recovery rate and structurally stabilized volume flow through continuously alternating discharging and recirculation intervals. Thereby enabled is an instantaneous discharge of the entire feed water concentrate and unmixed replacement with low salinity source water that intermittingly and effectively flushes the reverse osmosis membranes. This in turn provides for high recirculation peak salinity and recovery rate that are simple and reliably controlled without impairing membrane longevity.
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公开(公告)号：US20200166025A1
公开(公告)日：2020-05-28
申请号：US16747587
申请日：2020-01-21
IPC分类号： F04B1/16 , F04B53/14 , F04B53/10 , F04B53/00 , F04B1/124 , F04B1/143 , C02F1/44 , F04B1/0421 , F04B1/0408 , F04B1/0452 , F04B5/02 , F04B7/00 , F04B9/04 , F04B1/0538 , F04B1/053
摘要： A pump adapted for use in desalination systems that has four cylinders, with a double acting piston in each cylinder. Each cylinder and piston thereby defines a feed chamber and a recovery chamber. The pistons are connected to a common drive. The connection to the common drive is such that the pistons reciprocate in a sequence equally spaced in time. Reciprocating valving for each piston is driven by the common drive to be 90 degrees out of phase with the respective piston.The valving connects the recovery chamber alternately to an inlet manifold for an intake stroke of the piston relative to the recovery chamber, and to an outlet manifold for a discharge stroke of the piston relative to the recovery chamber. There is a brief period of closure coinciding with top dead centre and bottom dead centre of the piston, during which the recovery chamber is blocked off from both the inlet and outlet manifolds. The reciprocating valving is midway between its top dead centre and bottom dead centre during the period of closure.
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