Metering control method of traditional Chinese medicine extraction solvent

The invention discloses a metering control method of a traditional Chinese medicine extraction solvent. The metering control method comprises the steps: adding a solvent in a traditional Chinese medicine extraction pot, wherein Q=0.25Pid2*v; Q is the flow of the solvent; Pi=3.14; d is the diameter of a solvent inlet pipeline; and v is the flow velocity of the solvent; and stopping adding the solvent when Va=V-Vr, wherein Va is the addition of the accumulated solvents; when Va=ta*Q, ta is the total add time of the solvent; and Vr=tr*Q, tr is the response time of a solvent valve. Through the above mode, the metering control method of a traditional Chinese medicine extraction solvent aims to solve the technical problem that the addition of an existing traditional Chinese medicine extraction solvent is not accurate, realizes accurate metering control of the traditional Chinese medicine extraction solvent, reduces the difference between batches during the extraction process of traditional Chinese medicines, and provides a new technology for improvement of quality stabilization of traditional Chinese medicine products and modernization of traditional Chinese medicines.