Stable automatic calibration air pressure type liquid level sensing device

The invention relates to the technical field of liquid level detection, in particular to a stable automatic calibration air pressure type liquid level sensing device which comprises a floating ball mechanism which comprises a limiting cylinder, a triggering part adaptively installed in the limiting cylinder and a sliding part adaptively installed in the triggering part. The floating component is adaptively mounted on the outer side of the sliding component; through the interaction of the limiting cylinder, the triggering part, the sliding part and the floating part, when the liquid level is interfered by the outside and shakes, the triggering rod can be stably clamped in the original position and cannot be lifted up by the shaken liquid level to mistakenly touch the travel switch, and the triggering rod is still in a clamped state at the moment when the liquid level changes to the horizontal position, so that the safety of the liquid level is ensured. And the stability of the device is enhanced, so that the f