Tetrafluorohydrochloric acid storage tank breathing device

The utility model discloses a tetrafluorohydrochloric acid storage tank breathing device, which belongs to the technical field of breathing devices and comprises a respirator and a harmful dust filter layer, a breathable connecting component is mounted at the bottom of the middle of the outer wall of the respirator, and an air guide connecting component is mounted at the outer bottom of the breathable connecting component. Limiting connecting assemblies are installed on the two sides of the outer wall of the respirator, an adjusting traceless assembly is installed on the inner wall of the top of the respirator, a filtering layer assembly is arranged in the air guiding connecting assembly, air is filtered through the respirator, adjustment is conducted through the adjusting traceless assembly, and air is guided through the ventilation connecting assembly and the air guiding connecting assembly. When air guiding is needed, the filter is sealed through the sealing cover, and when air guiding is not needed, the s