| 摘要 |
1509338 Reverse osmosis OCEAN WATER Ltd 17 Feb 1977 [27 Feb 1976 21 April 1976] 12 Aug 1976] 07854/76 16157/76 and 33621/76 Heading B1X Fluid is forced via an inlet valve through a reverse osmosis module from a ram having a piston or diaphragm in a cylinder, an operating rod extending from the rear face of the piston or diaphragm, and from the module is returned onto the rear face of the piston or diaphragm via a controlled valve, there being a second controlled valve to control discharge from said rear to waste. The controlled valves may be constituted by ports in the cylinder co - operating with slots in the piston together with means for effecting relative rotation between the piston and the cylinder, or may be external valves linked with the ram or inlet valve operation or controlled hydraulically by the fluid pressure at the front face of the ram. |
