Liquid level measuring device capable of eliminating foam interference of tank

The utility model relates to the technical field of radar liquid level meter measurement, in particular to a liquid level measuring device for eliminating foam interference of a tank. Comprising a tank, a measuring cylinder penetrating hole is formed in the top of the tank, a measuring cylinder penetrates through the bottom of the measuring cylinder penetrating hole and extends into the tank, the top of the measuring cylinder is connected with a measuring cylinder mounting flange arranged on the tank, a radar liquid level meter mounting flange is arranged at the top of the measuring cylinder mounting flange, and a radar liquid level meter is mounted on the radar liquid level meter mounting flange. The radar liquid level meter is connected to a far-end DCS control system through a communication line, a spraying water pipe penetrating hole is further formed in the measuring cylinder mounting flange, a spraying water pipe penetrates through the spraying water pipe penetrating hole, the bottom of the spraying wat