Sealing process for double-layer glass production

The invention discloses a sealing process for double-layer glass production, which comprises the following steps: forming an air exhaust hole in the surface of upper-layer glass, and installing a metal zinc alloy ring in the air exhaust hole; a first annular sealing strip and a third annular sealing strip are arranged at the bottom of the upper-layer glass, two second annular sealing strips and two fourth annular sealing strips are arranged at the top of the lower-layer glass, and a low-temperature glass solder is filled between the two second annular sealing strips; the double-layer glass is conveyed into a double-layer glass sealing box; and the interior of the box body is vacuumized to 0.1 Pa or below, the upper heating plate and the lower heating plate are started to heat the double-layer glass, the first molten metal zinc alloy ring flows into the position between the two fourth annular sealing strips to seal the edge of the air exhaust hole, and then the molten low-temperature glass solder seals the edg