Heat insulation and oxygen reduction supporting tool and system for single crystal furnace

The utility model relates to the technical field of single crystal furnaces, and discloses a heat-insulating and oxygen-reducing supporting tool and system for a single crystal furnace, and the heat-insulating and oxygen-reducing supporting tool for the single crystal furnace comprises a heat-insulating and oxygen-reducing supporting ring which is arranged above an annular heating plate sleeved outside a crucible, an annular heat-insulation and oxygen-reduction groove is formed in the bottom face of the heat-insulation and oxygen-reduction supporting ring, the projection of the heat-insulation and oxygen-reduction groove on the horizontal plane comprises the projection of the annular heating plate on the horizontal plane, and the heat-insulation and oxygen-reduction supporting system for the single crystal furnace comprises a crucible, the annular heating plate, a lower heat preservation barrel and an upper heat preservation barrel. The utility model further comprises a heat-insulation oxygen-reduction suppor