Patent ID: 11904313
Assignee: GUANGZHOU WONDFO BIOTECH CO., LTD.
Field: Measurement (Instruments)
Classification: CPC B  G | IPC B  G

Claim 0:
1. A liquid quantifying device, comprising a base body and a liquid quantifying area arranged in the base body;
the liquid quantifying area is provided with a preset volume, two ends of the liquid quantifying area are respectively provided with a liquid quantitative inlet and a liquid quantitative outlet, the liquid flows into the liquid quantifying area from the liquid quantitative inlet and reaches the liquid quantitative outlet after the liquid quantifying area is filled; and
a liquid identification device is arranged at the liquid quantitative outlet and used for identifying the liquid reaching the liquid quantitative outlet;
wherein the base body is further provided with a liquid channel communicated with the liquid quantitative inlet, an air branch channel and an air inlet; one end of the air branch channel is communicated with the liquid channel, the other end of the air branch channel is communicated with the air inlet, the air inlet is connected with an air conduit external to the chip via a valve in an on-off manner so as to control the air to enter the chip; and a communication position of the air branch channel with the liquid channel is 0.5-10 mm away from the liquid quantitative inlet of the liquid quantifying area; and
the liquid quantitative inlet of the liquid quantifying area has a width of 0.3-3 mm and a height of 0.3-3 mm; and the liquid quantitative outlet of the liquid quantifying area has a width of 0.3-3 mm and a height of 0.3-3 mm.