▎ 摘　　要

NOVELTY - The utility model claims a double-hole heater, relating to the technical field of graphene device. The utility model comprises two foot plates; one end of the bottom of the foot plate is provided with a connecting hole; the top of the two foot plates is provided with a heating ring; two ends of the heating ring and the position corresponding to the foot plate are provided with an arc-shaped surface; two sides of the top part of the foot plate are provided with a connecting groove; one end of the foot plate far away from the heating ring and the position corresponding to the connecting groove is provided with a wide step; for increasing the depth of the screw thread, increasing the connection strength; the inner part of the connecting groove is provided with a screw with rod; one end of the screw with rod is connected with the heating ring by screw thread. The utility model through the arc surface, the connecting groove, the matching of the screw with rod and wide step, the device is spliced through the double-hole arc surface when using, avoids the risk of the arc and the plane boundary wall, and fixed by the counter bore screw thread; thick wall centripetal hole, so that the device does not reduce the strength of the same, reduces the difficulty of dismounting the bolt.