| 摘要 |
PURPOSE:To make it possible to simply operate the titled apparatus in any extraction system without altering the internal mechanism thereof, by performing the unit operation in extraction in combination by utilizing a computer. CONSTITUTION:The valve 1 provided on a tank 2 is opened while a pressure reducing valve 4 is opened to reduce the pressure in an extraction tank 5 and the liquid in the tank 2 is introduced into the extraction tank 5. After a definite time lapse, the valve 1 and the pressure reducing valve 4 are closed (tanks 2'- 2''' are similarily operated). Subsequently, from the electric resistance value of the liquid passing an electrode, whether present in a reference range or not, a computer 12 judges the liquid at every tank to separate the liquid of each tank. In the next step, a value 10 is directed toward liquid receiving tanks 13<n>',...13' or 13 while a valve 8 is opend to drop the liquid remaining in the extraction tank 5 into each liquid receiving tank through a conduit 6 and a passage 11. The valve 10 is further directed toward each liquid receiving tank and the valve 8 and the pressure reducing valve 14 are opened to pump up the liquid in each liquid receiving tank to the extraction tank 5.
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