Transmission mode of vacuum pump of vacuum blister machine

The two rotors of the vacuum pump are operated relatively synchronously through a pair of high-precision gears. The driving shaft is connected with the motor through a coupling. There are two main types of transmission structure layout: one is that the motor and the gear are placed on the same side of the rotor as shown in the figure. The driven rotor is directly driven by the motor end gear, so that the torsional deformation of the driving rotor shaft is small, the gap between the two rotors will not be changed due to the large torsional deformation of the driving shaft, so the gap between the rotors is running. uniform in the process. The biggest disadvantage of this transmission method is: a. There are three bearings on the driving shaft, which increases the difficulty of processing and assembling the pump, and the disassembly and adjustment of the gear is inconvenient; b. The overall structure is not symmetrical, and the center of gravity of the pump is biased towards the motor and the gear. side of the box.