Flame detector

The utility model relates to the technical field of flame detectors, and provides a flame detector which comprises a flame detector body and an adjusting box, and an adjusting mechanism is arranged on the surface of the adjusting box. Structural linkage is generated by rotating a rotating handle in the adjusting mechanism, so that two gears II rotate in the same direction to drive two rotating shafts II to rotate, and the two rotating shafts II drive connecting blocks at the bottoms of the rotating shafts II to synchronously rotate until the flame detector body rotates to a determined angle, and the rotating handle stops rotating to keep the adjusted angle of the flame detector body; when the angle of the flame detector body is adjusted, a connecting rod is arranged on the outer wall of a connecting block and synchronously rotates in an arc-angle sliding groove through an arc-angle sliding block, so that the stability of the flame detector body during angle adjustment can be effectively improved, and the diam