The invention discloses a liquid material accurate weighing device, a liquid supply
system and a concrete stirring
station. On the one hand, as the inner
diameter of a second liquid outlet
pipe is smaller than that of a first liquid outlet
pipe, the first liquid outlet
pipe can be firstly used for carrying out rough weighing and rapid liquid supply on a
liquid storage weighing hopper. When the weight or volume of the liquid in the
liquid storage weighing hopper reaches a preset value, the second liquid outlet pipe is used for carrying out accurate weighing and slow supply on the
liquid storage weighing hopper until the needed value is reached. The phenomenon that as the inner
diameter of the first liquid outlet pipe is large, the flow speed of the liquid is high, timely control is difficult, and the liquid material flowing into the liquid storage weighing hopper exceeds the needed value is avoided, and the accuracy of liquid supply is further improved. On the other hand, in the accurate weighing stage, slow liquid
material supply is carried out on the liquid storage weighing hopper through the liquid material left in a liquid inlet pipe and a tee joint
pipe fitting. At that time, the liquid inlet pipe and the tee joint
pipe fitting are equivalent to a liquid
material storage unit. The liquid inlet pipe and the tee joint
pipe fitting can be manufactured independently or adopt standard pipelines and pipe fittings, and the cost is lowered.