New NASH variable frequency oil screw vacuum pump

A screw vacuum pump consists of two screws, one with right-hand thread and the other with left-hand thread. Both screws turn in the compression housing without friction and at very tight clearances. They are synchronized via a precise gear. The compression housing and the specially shaped screws form the compression chambers. Due to the opposite rotation of both screws, the chamber connected with the suction port is enlarged and the gas is transported into the compression chamber. Then the chamber moves axially from the suction side to the pressure side. During transportation, plenty of gas increases in the chamber due to bigger flow. On the pressure side, the chamber is moved against the axial housing wall and the volume is reduced gradually until the front surface of the screw opens the pressure channel and the pre-compressed gas is discharged through the pressure connection.

The chamber is full of vacuum pump oil, which plays a role in lubrication, sealing and cooling. After oil-air mixture discharged out of the chamber undergoes three-level oil-air separation, clean gas is exhausted to the atmosphere. After being cooled by the air cooler, lubricating oil is injected to the vacuum pump chamber again for recycling.

List of Parameters

Note:

Applicable standard: ISO21360

Control system: PLC+ frequency conversion control                    

Motor power and protective rating: 380V/415V 50Hz IP55                          

Oil type: fully synthetic lubricating oil

Optional of cooling mode: air cooled

Mar.2020, Gardner Denver and Ingersoll Rand’s Industrial segment have officially joined forces to form the new Ingersoll Rand. As part of the Ingersoll Rand Pressure & Vacuum Solution (PVS), Nash China is the only production center of PVS in Asia-Pacific, we will continue to offer the full suite of liquid ring vacuum pumps, and compressors, centrifugal blowers, dry pumps and fully engineered systems and service.

NASH LV series can be widely applied to medical, electronic, tobacco, canning, aviation, aerospace, packaging, plastic, printing, wood processing and other fields.