Full-automatic negative-pressure drainage device of acetylene slag slurry recovery device

The utility model relates to the technical field of drainage devices for acetylene slag slurry, in particular to a full-automatic negative pressure drainage device for an acetylene slag slurry recovery device. The device comprises a safe water-sealed tank, a stable vacuum degree extension pipe is fixedly installed on the upper portion of the safety water seal tank, the lower portion of the stablevacuum degree extension pipe is located on the lower portion of a cavity of the safety water seal tank, the upper portion of the stable vacuum degree extension pipe is located outside the safety waterseal tank, and a drainage pipe is fixedly connected to the lower portion of the right side of the safety water seal tank. The device is reasonable and compact in structure; convenient use, the safe water seal tank, the stable vacuum degree extension pipe, the U-shaped self-flow upturning bent pipe and the drainage pipe are matched for use; the automatic drainage device has the advantages of beingsafe and reliable, prevent