Electric heater on float glass production line

The utility model discloses an electric heater on a float glass production line, which comprises a long ring-shaped electric heating pipe, a square pipe, a supporting plate, a bracket plate and a baffle plate, wherein both terminals of the long ring-shaped electric heating pipe are arranged on one end face of the square pipe through a sleeve and a ceramic seat; a connector post is arranged on the other end face of the square pipe through a ceramic sleeve; the other end face of the square pipe is provided with a junction box; both the terminals of the long ring-shaped electric heating pipe are respectively connected with the connector post through lead posts; the lead posts are arranged in the square pipe through insulation brackets; the upper end of the supporting plate is provided with a groove with an upward opening; the lower end of the supporting plate is provided with a groove with a downward opening; the groove at the upper end of the supporting plate and the groove at the lower end of the supporting pl