Jet type fuse

The invention belongs to the technical field of injection type fuses, and particularly relates to an injection type fuse which comprises an injection type fuse body, a fusion tube is clamped at the bottom of the injection type fuse body, a bottom column is clamped at the bottom of the fusion tube, and a fuse wire is wound at one end, close to the bottom column, of the fusion tube. The surface of the jet fuse body is in threaded connection with a bolt; after a new connecting disc, a fusion tube and an injection type fuse body are installed through an operating rod, the operating rod and the connecting disc need to be separated, at the moment, a push plate is located between the connecting disc and a rectangular plate, and the push plate is slid, so that the push plate makes contact with the rectangular plate and drives the rectangular plate to slide in the direction of the connecting disc; and the rectangular plate drives the limiting column to leave the limiting hole of the operating rod through the connectin