Convenient-to-disassemble crucible furnace with circular launder in middle

The utility model relates to the technical field of crucible furnaces, and provides a crucible furnace provided with a round runner in the middle and convenient to disassemble, which comprises a shell and a feeding funnel, the bottom of the feeding funnel is fixedly connected with a runner pipe, the feeding funnel and the runner pipe are jointly provided with a runner groove, the shell is provided with a fixing device, and the fixing device is fixedly connected with the runner pipe. The fixing device comprises a rotating ring, the rotating ring is rotationally installed in the shell, four protruding blocks evenly distributed in the circumferential direction are welded to the inner wall of the rotating ring, and through arrangement of structures such as a fixing rod and a clamping plate, the fixing rod is rotated to drive the rotating ring to rotate, so that the clamping plate moves to fix the feeding hopper; the fixing rod is fixed through the clamping block, the stability of the feeding hopper is guaranteed,