In view of the fact that the Roots vacuum pump is a variable-capacity vacuum pump, the structure is simple, the reserve capacity is large, and it is very easy to maintain. Routine maintenance work is simply to lubricate the bearings and gears with low maintenance costs.

Since the rotor profile of the Roots vacuum pump is a conjugate curve, its geometric symmetry is also good. It has good balance during operation. When the rotation speed is not high, its working vibration frequency is lower than 80Hz, so the operation is stable and the noise is low. After replacing the 1575 paper machine with three Roots pumps, the noise has been reduced, and the environmental noise pollution of the workshop has basically reached the standard of national environmental protection regulations.

The pulp passes through the natural dehydration and forced dehydration of the wire part to form a paper web with a certain humidity. On the premise that the transverse shrinkage and deformation are required to be small, the pulp is normally and smoothly transferred to the press to further dehydrate the paper web by mechanical methods.