Anti-blockage differential pressure type liquid level gauge

The utility model discloses an anti-blockage differential pressure type liquid level gauge. The anti-blockage differential pressure type liquid level gauge comprises a differential pressure gauge with a low-pressure cavity and a high-pressure cavity. The differential pressure gauge is provided with a low-pressure cavity connector communicated with the low-pressure cavity and a high-pressure cavity connector communicated with the high-pressure cavity. A display instrument is arranged on the differential pressure gauge and used for displaying the liquid level in a container. The low-pressure cavity connector is connected with a low-pressure pipeline used for being connected with a lower liquid phase space of the measured container. The high-pressure cavity connector is connected with a high-pressure pipeline used for being connected with an upper liquid phase space of the measured container. The high-pressure pipeline is connected with a liquid filling pipeline used for adding solvent immiscible with media in the measured container into the high-pressure pipeline. An emptying valve and a tower wall valve are arranged at the end, used for being connected with the upper liquid phase space of the measured container, of the high-pressure pipeline in the solvent flowing direction in sequence. By the adoption of the anti-blockage differential pressure type liquid level gauge, a pipeline to be measured can be prevented from being blocked without reversely blowing air, so the manufacturing cost of the liquid level gauge is lowered, and the influence of reverse air-blowing on rectifying tower technological operation is reduced.