Secondary material-adding device for single crystal furnace

The utility model discloses a secondary material-adding device for a single crystal furnace and belongs to the field of single crystal silicon manufacturing devices. The secondary material-adding device for the single crystal furnace comprises a lifting rod, a fixed ring, a supporting ring and an outer cylinder. The secondary material-adding device for the single crystal furnace is characterized in that the supporting ring and a lower ring are connected with the outer cylinder, an inner cylinder is connected to the lower ring, the fixed ring is respectively connected with the outer and inner cylinders, the lifting head and the lifting rod are connected to an upper ring, a pull rod is connected with the upper ring, a connecting rod is connected with the pull rod by virtue of a dowel, both ends of a short pull rod are respectively connected with the connecting rod and a petal by virtue of a ball pair mechanism, and the petal is connected on the inner cylinder by virtue of a hinge. The secondary material-adding device for the single crystal furnace, disclosed by the utility model, is novel in structure and compact in design and can be used for effectively solving the problem that the silicon material of the original secondary material-adding device for the single crystal furnace is blocked and pollutes the environment.