Vacuum treatment system of pharmaceutical factory

The utility model relates to a vacuum treatment system of a pharmaceutical factory, which is characterized in that a decompression tank is provided with a first vacuum pipeline, a double-effect concentrator is provided with a second vacuum pipeline, and the first vacuum pipeline comprises a first vacuum pipe, a first backing pump driven by a fixed-frequency motor and a first post pump driven by a variable-frequency motor; the second vacuum pipeline comprises a second vacuum pipe, a second backing pump driven by a fixed-frequency motor and a second post-stage pump driven by a variable-frequency motor, and the two post-stage pumps are water ring vacuum pumps. The front-stage pump is driven by a fixed-frequency motor, the rear-stage pump is driven by a variable-frequency motor, the front-stage pump can continuously work in the optimal working efficiency state, the vacuum degree of the vacuum treatment equipment is preliminarily controlled, and the rear-stage pump can accurately adjust the vacuum degree in real t