LIQUID METERING DEVICE Russian patent published in 1995 - IPC

FIELD: metering of liquids. SUBSTANCE: integrity of structure of elements of metering. transfer and drain of dose with allowance for operation of all elements under different design-limited levels of liquid in tank makes it possible to increase precision of metering and operational reliability, to reduce material usage and power consumption. Possibility of use of chemically resistant materials in manufacture of key working element of metering device (cylindrical ladle-shaped body with hollow rotational support) enables metering device to be utilized in operation with chemically aggressive liquids. Level of liquid in cylindrical part of ladle-shaped body when it rotates does not change relative to concentric metering hole. Edge of hole in this case is limit for position of level of dose as excess of liquid drains out through this hole. EFFECT: increased precision of metering and operational reliability. 3 dwg