Sintering furnace heat preservation barrel with compression assembly

The utility model relates to the technical field of sintering furnace heat preservation, in particular to a sintering furnace heat preservation barrel with a compression assembly, which comprises an outer barrel, a top cover plate and an inverted inner barrel, a heat preservation layer is arranged between the inner barrel and the outer barrel, an upper cover plate is arranged between the heat preservation layer and the top cover plate, and a compression gap is arranged between the upper cover plate and the top cover plate. A plurality of compression spring assemblies are arranged at the upper end of the upper cover plate, the compression spring assemblies have downward pre-compression force, and each compression spring assembly comprises a spring seat, a compression spring and a spring guide sleeve; when the heat preservation barrel is in a high-temperature and high-pressure state, the inner barrel, the heat preservation layer and the upper cover plate move upwards in the outer barrel and apply upward compres