Floating furnace door for muffle furnace

The utility model discloses a floating furnace door for a muffle furnace. The floating furnace door for the muffle furnace comprises a furnace door body, floating assemblies, a sheet metal hoop and a door frame, wherein the furnace door body is inlaid in a penal, the furnace door body is clamped in the door frame by the sheet metal hoop through the floating assemblies, each floating assembly comprises a guide post, a spring and a gasket, one end of each guide post is provided with a first limiting cap after penetrating through the sheet metal hoop and the door frame, the other end of each guide post is provided with a second limiting cap after penetrating through the corresponding gasket, the springs are arranged between the gaskets and the sheet metal hoop, and the diameter of the springs is smaller than that of the gaskets. The floating furnace door for the muffle furnace is simple in structure and convenient to use; a combustion chamber is fixed with a shell; the floating assemblies are arranged, so the furnace door can be automatically moved at a proper distance and deflected by a proper angle, and the combustion chamber makes tight contact with the furnace door all the time; meanwhile, fragile ceramic fiber materials cannot be damaged.