Magnetic frame for nucleic acid extraction

The utility model discloses a magnetic frame for nucleic acid extraction, which relates to the technical field of biological nucleic acid molecule extraction and comprises a shell, an iron core, a coil and an electric heater, the iron core, the coil and the electric heater are arranged in the shell, the coil is wound on the iron core to form an electromagnet, a placing plane for placing a porous culture plate is arranged at the top of the iron core, and the heater is arranged at the bottom of the iron core. The heater is used for heating iron cores; a temperature sensor for monitoring the temperature of the iron core and a magnetic field intensity sensor for monitoring the magnetic field intensity of the electromagnet are arranged on the iron core; the temperature sensor is electrically connected with the electric heater; the magnetic field intensity sensor is electrically connected with a power supply of the coil; the magnetic frame for nucleic acid extraction disclosed by the utility model can be used for s