PNEUMATIC CIRCUIT

摘要

PROBLEM TO BE SOLVED: To improve the efficiency of separating a mixed liquid into an aqueous solution and an oil by securing a time for separating a mixed liquid to be separated into an aqueous solution and an oil into the aqueous solution and the oil without stirring of mixed liquid newly introduced.SOLUTION: An oil exceptor 1 includes an oil/water separation tank 40 which separates waste supernatant L2 (mixed liquid) into a coolant liquid (aqueous solution) L4 and an oil L3 floating on the coolant liquid L4 due to a difference in specific gravity between the coolant liquid L4 and the oil L3 and recovers the oil L3 in an oil recovery pipe 42A and the coolant liquid L4 in a coolant liquid recovery pipe 43A (aqueous solution recovery pipe) under the oil recovery pipe 42A, a mixed liquid introduction pipe 20 which introduces the waste supernatant L2 in a stored state into the oil/water separation tank 40 and execution means 30 of causing the mixed liquid introduction pipe 20 to introduce the waste supernatant L2 intermittently.