Air blower NSR series

impellersingle-stagefor gas

NSR series roots blower has high cost-performance. Under mature technology, it is widely used for biogas or air boosting and transmission in our GasCle systems and oxidation systems. Main Parameters: 1.Pipeline size Ø40 - Ø300mm. 2.Gas flow 0.35 - 132 Nm3 / min. 3.Operation pressure 9.8 - 98.8 Kpa. 4.Motor 0.75 - 280 kW. Structure features: 1.There are two sets of 3-blade impellers inside the case, driven by a pair of synchronous gears to do reciprocating movements in the opposite directions. The rotation of impellers originates gas pressure. A certain gap reserved between impeller and housing, no friction for long-term operation; 2.Fixed helix of 20° or more. Special design of gas strength for inlet and outlet causes less noise and almost no exhaust pulsation; 3.Rotor is 3-blade straight type, just needs to ensure a certain gap between the rotors on the cross-section, efficiency is much higher than the same-size rotor spiral blower; 4.The design for special shaped rotor can easily maintain the gap between rotors, to get a good efficiency improvement; 5.The mass production of rotors by precise CNC machine under a set of strict precision management makes no performance differences of blowers produced. Rotor has been in a balanced state in manufacturing process, so that almost no vibration caused when blower running; 6.Adopting the most advanced driving gear produced by using special Cr-mo steel through appropriate quenching, in strict accordance with JIsI-class precision.