Fire extinguisher internal damage detection device

The utility model discloses an internal damage detection device for a fire extinguisher, which belongs to the technical field of fire-fighting equipment and is technically characterized by comprising a rotating unit rotationally connected in a box body and connected with an ultrasonic flaw detector; the lifting unit is mounted in the box body and connected with the rotating unit; and the clamping unit is mounted on the lifting unit. When the fire extinguisher is detected, the fire extinguisher is placed on the clamping unit, the clamping unit can clamp and fix the fire extinguisher, the rotating unit is started, and the rotating unit can drive the ultrasonic flaw detector to rotate, so that the ultrasonic flaw detector can detect the fire extinguisher at various angles; and the detection comprehensiveness and accuracy are improved. And when rotating, the rotating unit can drive the clamping unit to alternately lift up and down in a reciprocating manner through connection with the lifting unit, so that the two