Magnetically-variable magnetic separation device for solid household garbage

The invention provides a magnetically-variable magnetic separation device for solid household garbage. The device is mainly composed of a metal detection device, a magnetic separation device, strip-shaped electromagnets, a roller, a control box, a collecting tank and the like. During magnetic separation, the controller can change the magnitude of output current according to the detected ferromagnetic garbage content, so that the electromagnetic field intensity of the strip-shaped electromagnets is adjusted; when the detected ferromagnetic garbage content is high, the current is increased, so that the magnetic field intensity for adsorbing ferromagnetic garbage is enhanced; when the detected ferromagnetic garbage content is low, the output current is reduced after a certain time delay instead of being reduced immediately, and therefore, it can be ensured that ferromagnetic garbage in the household garbage can be subjected to complete magnetic separation; and thus the ferromagnetic garbage in the household garb