Float glass tin bath with adjustable tin liquor depth

The invention provides a tin liquor depth adjustable float glass tin bath and a use method, the tin liquor depth adjustable float glass tin bath comprises a bath bottom, a top cover, a breast wall, a movable edge seal, a protective gas ingress pipe, floating baffles and an edge roller, the floating baffles are located on two sides of a glass tape, float on a tin liquor surface, are connected through a connecting rod and penetrate through the movable edge seal, and the other side of the floating baffles is connected with a lifting assembly. The tin liquid depth adjusting device has the advantages that the tin liquid depth can be adjusted in real time, so that the tin liquid depth is kept constant, or the tin liquid depth is dynamically adjusted to adapt to continuous change of the thickness of a glass plate and stabilize the internal temperature fluctuation of the tin liquid, meanwhile, the floating baffle can protect the tin liquid originally exposed on the edge from volatilization, and glass liquid pollution