Reverse osmosis desalination energy recovery from the high pressure booster pump

One kind of reverse osmosis desalination energy recovery from the high pressure booster pump, of: forming a plurality of internal flow paths within the central block; internal flow path is located above the center of the block, in communication with the central block, and provided with a high saline and the holes are symmetrically located between the first and second discharge holes on both sides of the high-pressure brine discharge hole bore directional control valves; internal flow passage located below the center of the block, in communication with the central block, and is provided with raw water inlet holes and are symmetrically disposed on both sides of the raw water inlet holes of the third and fourth discharge holes pilot control valve drain hole; internal flow passage in the center of the left side of the block, in communication with the central block, and symmetrically provided with a first a first cylinder and a second liquid stream bore hole; right in the center of the block, with the internal flow passage through the center of the block is connected to, and symmetrically provided with a third hole and the fourth flow a second flow aperture hydraulic cylinder. Reliable, high efficiency, low manufacturing cost, for small reverse osmosis desalination system, energy recovery efficiency of more than 90%.