▎ 摘　　要

NOVELTY - Graphene preparing tubular furnace comprises a tubular furnace body (1), where its bottom is provided with a water cooling device (2), the left side of the water cooling device is provided with a vacuum pump (3). The right side of the water cooling device is provided with a three-channel gas flowmeter (4), movably connected with the top of the tube-type furnace body connected with right side and left side of the tubular furnace box cover (5), and the tube-type furnace body are fixedly connected with a limit block. The limiting block is sliding connection movable rod, the movable rod is fixedly connected with a bottom support, and the surface of the movable rod is provided with a first spring. The first spring of the bottom of the bottom support fixedly connected; the top part of the first spring and the limit block of bottom contact. The top of the movable rod is fixedly connected with connecting block, and the top of the connecting block is fixedly connected with a handle. USE - Used as graphene preparing tubular furnace. ADVANTAGE - The tubular furnace: has good sealing effect, and is suitable for user to use. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic representation of the graphene preparing tubular furnace. Tubular furnace body (1) Water cooling device (2) Vacuum pump (3) Three-channel gas flowmeter (4) Tubular furnace box cover (5)