Fully automatic control by computerized system, tolerance in adding operation ≤1%, in addition,liquid level and temperature can be regulated automatically. Triple insurance, accurate and reliable. For Model SYTZ A intermittent fluid addition system, a supplementary supercharging device can be equipped to prevent the oil nozzles from dropping oil when spraying stops, resolving the problem of material agglomeration. Mainly used for intermittently adding all kinds of liquid nutritional ingredients like oil into feed. Thanks to auxiliary supercharging device, oil dripping from injection nozzle after spraying is eliminated, thus solving the problem of material agglomeration. Respectively suitable for adding liquids into the mixer with capacity of 100, 250, 500,1000, 2000, 3000, 4000, 5000 Kg per batch.