Energy-saving electromagnetical demagnetization machine

The utility model relates to an energy-saving electromagnetic demagnetizer, and belongs to the technical field of the electromechanical equipment, the structure of which comprises a demagnetizing coil (1), a power source (2), a transmission belt (3) that pass through the hollow center of the demagnetizing coil (1), a motor (4) and a water-cooling system that is arranged at the periphery of the demagnetizing coil (1); an alternative-current voltage-regulation and controlling system consists of an autotransformer (5), a stepper motor (6) and a single chip (7); the rotation shaft of the autotransformer (5) and a carbon brush (9) that is connected with the rotation shaft can be driven by the stepper motor (6) to rotate; the single chip (7) controls the stepper motor (6) so as to further control the rotation direction and the rotation speed of the carbon brush (9). A separation transformer (8) can be arranged between the autotransformer (5) and the demagnetizing coil (1). The energy-saving electromagnetic demagnet