Efficient vacuum transition device

The utility model discloses an efficient vacuum transition device, which relates to the technical field of vacuumizing and comprises a vacuum cavity unit, a non-return unit, an equipment connecting unit and a vacuum pump connecting unit. Each vacuum cavity unit comprises a vacuum cavity, a first connecting pipe, a second connecting pipe, annular beams, a supporting beam, supporting feet and a base, the first connecting pipe is arranged at the rear end of the vacuum cavity in a penetrating mode, the second connecting pipe is arranged at the front end of the vacuum cavity in a penetrating mode, and the two annular beams are fixedly connected to the inner side face of the vacuum cavity at equal intervals; the annular beam is fixedly connected with the supporting beam in the diameter direction. The non-return unit is installed in the middle of the inner side of the first connecting pipe. The equipment connecting unit is mounted at the front end of the inner side of the connecting pipe II; the vacuum pump connecti