Fireproof liner for wrapping total plate flange air duct rubber and plastics

The utility model discloses a fireproof liner for wrapping total plate flange air duct rubber and plastics. The fireproof liner comprises a galvanized steel sheet patch, a rivet and a batten liner for wrapping a rubber and plastic corner, a first batten liner and a second batten liner are pasted on two side planes of a joint crack of the rubber and plastic corner respectively, the outer wall of the batten liner is coated with a 0.2-0.4mm thick facing fireproof coating, the right-angled galvanized steel sheet patch wraps a vertical edge of the batten liner, the thickness of the batten liner is 3-4.5mm, the width of the batten liner is 25-40mm, the length of the batten liner is consistent with that of the joint crack of the rubber and plastic corner, a fireproof self-adhesive glass fiber fabric is pasted on the surfaces of the batten liner and the galvanized steel sheet patch, and the first batten liner and the second batten liner are straight strips or arc-shaped strips. Heat insulation quality of rectangular air duct rubber and plastics of an air-conditioning system can be effectively improved, the problems of untight heat insulation, irregular heat insulation formed surfaces and the like are avoided, materials are common, and the fireproof liner is simple in structure, low in cost and convenient to use and can be optionally formed according to appearance characteristics of an air duct.