Adjustable induction coil and vacuum induction melting furnace

The utility model discloses an adjustable induction coil and a vacuum induction melting furnace, which comprise two conductive connecting blocks, an induction section and two power supply leading-in sections, the induction section and the power supply leading-in sections are connected through the conductive connecting blocks, and both the induction section and the power supply leading-in sectionsare of hollow tubular structures; each conductive connecting block is provided with a through cavity, the movable sections located at the two ends of the induction section are inserted into the through cavities of the corresponding conductive connecting blocks in a sealed mode respectively, the outer walls of the corresponding power supply leading-in sections are sleeved with the through cavitiesin a sealed mode respectively, and the conductive connecting blocks are provided with two conductive voltage covers. The moving section and the power supply lead-in section are respectively fastened on the conductive connectin