| 摘要 |
1,139,238. Distillation apparatus, control; desalination of water. G. & J. WEIR Ltd. 13 Sept., 1967 [7 Dec., 1966], No. 54704/66. Heading B1B. In distillation apparatus comprising an evaporator 1, condenser 2, distillate-conduit 13, and a pump 15 for discharging the required distillate from the apparatus, the quality of the distillate is measured by sensing- means 19 which sends a signal to stop the pump when the quality of the distillate is below the required value, the unsatisfactory distillate then flows to the evaporator through conduit 6, but when the quality of the distillate is at or above the required value, the pump is restarted and the distillate is discharged from the apparatus through non-return valve 17. The pump 15 is driven by motor 18, and controlled by an on-off switch communicating with sensing-means 19. During normal operation when the distillate is of the desired quality and pump 15 is in operation, conduit 6 acts as a gas-seal between conduit 13 and the evaporator. The apparatus is suitable for the production of distilled water from salt water which is fed to the evaporator through conduit 5, excess brine being withdrawn by jet-pump 10.
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