The liquid tank high efficiency air supply outlet is based on the ordinary high efficiency air supply outlet. In order to increase its airtightness and uniqueness, the liquid tank high efficiency jelly glue is used as the sealing groove, which is nested with the knife edge around the box body to form an airtight seal. It is equipped with PAO detection port, which has the advantages of good sealing, beautiful modeling, simple structure and easy construction. The equipment is widely used in biological laboratories, pharmaceutical factories, hospitals, food processing and other air purification places.