Dismounting device for auxiliary door core of fuel nozzle

The utility model relates to the field of aero-engine fuel nozzle flow repair, in particular to a dismounting device for an auxiliary door core of a fuel nozzle. A dismounting device for an auxiliary door core of a fuel nozzle comprises a dismounting rod and a clamping device, the clamping device is provided with a through hole, a strip-shaped groove is formed in the inner wall of the through hole, and the strip-shaped groove is used for limiting the moving range of the dismounting rod. The clamping device with the through hole is arranged, the strip-shaped groove is formed in the inner wall of the through hole, the moving range of the dismounting rod is limited through the strip-shaped groove, the auxiliary door core is prevented from being thrown out after being pulled out of the interior of the nozzle shell, and operation control over dismounting of the auxiliary door core is improved. Furthermore, a sleeve is arranged to control the advancing direction of the dismounting rod when the dismounting rod exten