On-off apparatus for liquid level autonomous pipeline

The utility model discloses a liquid level initial pipeline on-off control device. It comprises of the floating body, valve and stop block. The floating body is installed on the driving arm of the lever; the gear frame of the valve revolves within the movement scope of the resistance arm of the lever or joins with the rotational axis of the valve and the lever at the pivot point; the stop block is installed on the motion trajectory of the floating body, lever or the gear frame of the valve. This utility model, with pure mechanical structure, leaves out the configuration of complicated electric system and frees from the reliance on electric power. Therefore, the utility model, with the advantages of excellent safety and energy-saving performance, simple structure, stable performance and low cost, is appropriate for promotion on large scale.