Filtering device of electric heater for heating

The utility model discloses a heating electric heater filtering device which comprises a filtering box, a water inlet is fixedly installed on the right side of the bottom of the filtering box, and an end cover is arranged at the upper end of the filtering box. Water sucked by the device enters the filter tank through the water inlet, then is pumped into the header pipe through the two groups of water pumping pipes arranged at the upper end and finally enters the electric heater, the water is filtered by the filter membrane in the process, impurities are left on the surface of the filter membrane, and the water is discharged after being used for a period of time. A first electric telescopic rod and a second electric telescopic rod are started to push a backwashing tank to the outer side of one group of mounting frames, the backwashing tank and a rubber sealing block are matched and sealed, and then a water pump is started, so that a part of water is pumped out through a right side mounting frame, two groups of