High-temperature furnace body comprising airtight structure

The utility model relates to the technical field of high-temperature furnaces, and discloses a high-temperature furnace body with an airtight structure, which comprises a high-temperature furnace body, a high-temperature carbonization area and an air cooling area are arranged in the high-temperature furnace body, a wire passing channel is arranged in the middle of the high-temperature furnace body in the horizontal direction, and an airtight device is arranged between the high-temperature carbonization area and the air cooling area. The gas outlet pipes are symmetrically arranged in the vertical direction, the connecting holes are formed in the high-temperature furnace body and used for allowing the gas outlet pipes to be inserted, the fastening assemblies are arranged at the connecting holes and used for fixing the gas outlet pipes, the gas outlet pipes are located on the upper side and the lower side of the wire passing channel, and a plurality of vent grooves allowing inert gas to penetrate through are for