Plasma burner with adjustable burning distance

The invention belongs to the technical field of combustors, and provides a combustion distance adjustable plasma combustor which comprises a device body, a power frame is fixedly connected to the outer wall of one side of the device body, a first motor is fixedly connected to the outer wall of one side of the power frame, and a first rotating rod is fixedly connected to the output end of the first motor. One end of the first rotating rod is fixedly connected with a first gear, the outer wall of the first rotating rod is fixedly connected with a second gear, and the inner wall of the device body is rotatably connected with a second rotating rod; when an operator starts the device, a rotating first rotating rod can drive a third gear to rotate, then a second rotating rod drives a fourth gear to rotate, then a rotating sliding block is driven to rotate, a cleaning iron rod is driven to rotate, and the rotating cleaning iron rod can remove coal ash accumulated on the surface of the anode ring. Failure ignition ca