三叶罗茨风机是一种双叶轮同步压缩机械，每个三叶型转子用两个轴承支承，利用一对同步齿轮，使两个转子的相对 位置始终保持不变。属容积式鼓风机，具有强制输气特征。三叶罗茨风机作为回转式机械，具有比较稳定的工作特性，  三叶罗茨风机转子与转子、转子与泵体｀转子与侧盖之间都有微小间隙，因而工作腔内没有摩擦，无接触磨损部分，三叶罗茨风机经济耐用，无需润淆，使用寿命长，动力平衡性好．运转一周有六次吸排气过程，容积效率离结构简单，使用维护方便 不需要内部润滑，输送的介质不含油等特点。泵转子的支承采用了可靠的消隙结构，转动部件作细致的动平衡，并采用高精度的斜齿轮，因此，运行平稳，噪声低，使用更加可靠，可在商压差下长期运行．

罗茨风机广泛应用于陶盗、建材、造纸、电业、石油、化工、纺织、水产养殖、污水处理、食品等行业的气力输送系统．

The three-lobe Roots blower is a two- impeller synchronous compressionmachine . Each three-bladed rotor 1s supported by two bearings. A pair of synchronous gears are used to keep the relative positions of the two rotors constant. It is a positive displacement blower with forced gas transmission chara cteristics  As a rotary machine, the three-leaf Roots blower has relatively stable working characteristics. There is a slight gap between the rotor and rotor of the three-lobe Roots blower, the rotor and the pump body, and the rotor and the side cover. Therefore, there is no friction in the working chamber. contact with the wear part; the three-leaf Roots blowe is economical and durable,requires no lubrication, has a long service life and good dynamic balance. There  are six suction and exhaust processes in one week of operation. The volumetric efficiency is high, the structure is simple, the use and maintenance are convenient, no internal lubrication is required, and the medium to be transported does not contain 0il..  The support of the pump rotor adopts a reliable anti-backlash structure, the rotating parts are carefully balanced, and the high-precision helical gear is used There fore, the operation is stable, the noise is low, the use is more reliable, and the long-term operation can be performed under the high pressure difference.

Roots blowers are widely used in the pneumatic conveying systems of ceramics,building materials, paper, electricity, petroleum,chemical, textile, aquaculture, sewage treatment,food and other industries.