LIQUID LEVEL REGULATOR OF DISCHARGE MACHINING TANK.

摘要

A liquid level regulator which can regulate easily and accurately a liquid level in a discharge machining tank. The regulator includes a discharge pipe (10) communicating with a machining solution discharge port (3) of a discharge machining tank (1) and a regulation pipe (20) which fits slidably into the discharge pipe (10). An O-ring (30) is discharged in an annular groove in a lower part of the outer peripheral wall of the regulation pipe to be brought into pressure contact with the inner peripheral surface of the discharge pipe. When an operator holds a rod (40) projecting upward from the regulation pipe, slides the regulation pipe with respect to the discharge pipe (21) and positions its upper open end (21) to a predetermined height, the regulation pipe is held at this height by the O-ring. When a machining solution is supplied into the machining tank and the liquid level reaches the upper end of the regulation pipe, the machining solution overflows from the machining tank through the upper end of the pipe and is discharged outside the machining tank from the upper end of the pipe through the regulation pipe and the discharge pipe. Then, the supply of the machining solution is stopped and the liquid level regulation is completed. Leak of the machining solution from the machining tank is prevented by the O-ring and a substantial drop of the liquid level does not occur.