The power source for oil-free screw vacuum pumps relies on electricity, and the methods of obtaining electricity for different screw vacuum pumps vary, with different power supply methods also impacting the pumps differently. When screw vacuum pumps are used to extract media, particularly "water or liquid," they require a higher amount of electricity. In contrast, small vacuum pumps and small air pumps typically extract "gases" more frequently. The operating current of screw vacuum pumps is generally higher than that of small-type vacuum pumps, ranging from 1 to over 10 amperes, whereas the operating current for small-type vacuum pumps ranges from a few hundred milliamperes to several amperes.

The Dry Oil-Free Screw Vacuum Pump is a dry-running, non-contact, equal pitch screw vacuum pump. It can remove gases containing a high amount of condensable gases and dust. The twin screws are precision dynamically balanced and supported by bearings. The equipment is housed within the pump casing, with a certain gap between the screws, ensuring smooth operation and no conflict between them. The working chamber is medium-free. It is an ideal environmentally friendly and energy-saving vacuum pump, more adaptable to different working environments than oil-sealed mechanical vacuum pumps, liquid ring vacuum pumps, reciprocating vacuum pumps, and other types of vacuum pumps.

The dry oil-free screw vacuum pump is composed of a screw rotor, housing, gears, cooling cycle, and seals. The drive shaft connects the driven rotor, which is rotated in the opposite direction by high-precision synchronous gears to compress and exhaust gases, achieving the purpose of evacuation.