空心转子优势：

Advantages of hollow rotor:

1.空心转子重量减轻后，与常规转子的轴向扭力减弱，启动扭矩降低，减速电机选型偏小，客户使用成本大大降低，达到环保节能效果。

1. After the weight of the hollow rotor decreases, the axial

torsion of conventional rotor will recede, break-out torque will lower, gear

motor type will be relatively small, as well as customer's use cost will

greatly lower with effect of environmental protection and energy saving

obtained.

2.因摩擦力与重量有密切关联，因此与同等实心转子对比，重量减轻后，泵在运行过程中转子摩擦力减弱，使用寿命同比增大。

2. Because the force of friction is closely related to

weight, the force of friction of the rotor lowers and service life increases on

a year-on-year basis in the operation process of the pump after the weight1

decreases in comparison to the equivalent solid rotor.

3.泵在快速启动和高速运转过程中的震动明显减小。

3. Pump vibration iously decreases in the process of quick

start and high-speed operation.

4.设备运行过程中，噪音分呗大幅度降低，不会有噪音污染。

4. In the operation process of the equipment, noise decibel

is greatly lowered without noise pollution.

螺杆泵基本原理：螺杆泵是容积式转子泵，主要是依靠泵体与螺杆之间所形成的啮合空间容积变化和移动来输送液体或使液体增压的回转泵，从上图中可以看出。螺杆泵按螺杆数目分为单螺杆泵、双螺杆泵和三螺杆泵等。当主动螺杆转动时，带动与其啮合的从动螺杆一起转动，吸入腔一端的螺杆啮合空间容积逐渐增大，压力降低。液体在压差作用下进入啮合空间容积。