Cone sintering device in optical fiber preform powder preparation and working method

The invention relates to the technical field of optical fiber preforms, and discloses a cone sintering device in optical fiber preform powder preparation and a working method thereof. The cone sintering device comprises a first-layer barrel, a second-layer barrel and a third-layer barrel; the first-layer barrel is located below the second-layer barrel; the second-layer barrel is located below thethird-layer barrel; and a limiting groove is formed in the bottom surface of the first-layer barrel. According to the cone sintering device in optical fiber preform powder preparation, hexagon socketscrew holes are formed and penetrate through the side wall of the first-layer barrel and the side wall of the second-layer barrel to extend into the side wall of the third-layer barrel, and the cone sintering device is designed in a multi-layer nested combination mode; the first-layer barrel, the second-layer barrel and the third-layer barrel are fixedly connected by inserting hexagon socket screws into the hexagon socket