Vacuum injection oil mist system assembly

The utility model relates to the technical field of oil-gas separation, in particular to a vacuum injection oil mist system assembly which comprises a transverse pipe, a separation tank and an introduction pipe, an introduction cavity and a leading-out cavity are arranged in the transverse pipe, the introduction cavity and the leading-out cavity are separated through a partition plate, and a communicating hole communicated with the introduction cavity and an air hole communicated with the leading-out cavity are formed in the lower portion of the transverse pipe. The separating tank is fixed below the transverse pipe, and an oil filter element is arranged below the communicating hole; the leading-in pipe is communicated with the leading-in cavity and is used for injecting high-pressure oil mist into the leading-in cavity; mixed gas of oil mist and high-pressure air is led into the leading-in cavity of the transverse pipe through the leading-in pipe, the mixed gas passes through the communicating hole and the o