| 摘要 |
A separator for liquids of different specific gravities, such as oil and water, comprises a tank having a hopper therein with downwardly convergent side walls and an open bottom which is spaced above the bottom of the tank, the top of the hopper being closed by the top of the tank. Oil-water mixture is fed to an intermediate level of the hopper, and oil is withdrawn from the top of the tank and water from the bottom of the tank on the opposite side of a filter that passes water but not oil. The downward convergence of the hopper walls lengthens the path through which the water must travel during separation, thereby to reduce the entrainment of oil in the water. Vertical anti-turbulence baffles are positioned in the hopper, as well as a sensor responsive to the presence of oil to control the device. By-pass conduits return to the top of the hopper the oil that accumulates in the tank outside the hopper.
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