Welding-free solar electric heater

The utility model relates to a welding-free solar electric heating device, which belongs to the field of electric heating and mainly solves the problems of the fixation and the sealing of an electric heating device. The utility model comprises an electric heating pipe assembly and a flange assembly which is positioned in an opening position of an inner liner of a water tank, wherein the flange assembly comprises a heating pipe upper flange, a heating pipe lower flange and a sealing rubber cushion which is positioned between the heating pipe upper flange and the heating pipe lower flange; the middle parts of the heating pipe upper flange, the heating pipe lower flange and the sealing rubber cushion are provided with through holes with the same shaft center and a screw bolt which are fastened into one body through the heating pipe lower flange, the sealing rubber cushion and the heating pipe upper flange by screw nuts; the heating pipe upper flange, the heating pipe lower flange and the sealing rubber cushion are also provided with two electric heating pipe assembly fixing holes; the electric heating pipe assembly is positioned in the fixing holes. The utility model has the characteristics of reasonable design, simple structure, no welding installation, fixing firmness, good tightness, no safety hidden danger, etc. and has good popularization and use values on a solar water heater.