1、首先，根據污水處置站的節能來分析一下羅茨風機的工作原理，輸送的風量與轉速成比例，羅茨風機為容積式風機。三葉型葉輪每轉動一次由2個葉輪進行3次吸、排氣，與二葉型相比，氣體脈動變少，負荷變化小，機械強度高。

1. First, analyze the working principle of Roots blower according to the energy saving of sewage treatment station. The air volume conveyed is proportional to the speed. Roots blower is a positive displacement blower. The three blade impeller is sucked and vented by two impellers three times per rotation. Compared with the two blade impeller, the gas pulsation is less, the load change is smaller, and the mechanical strength is higher.

   
   

2、兩根平相行的軸上設有2個三葉型葉輪，輪與橢圓形機箱內孔面及各葉輪三者之間始終保持微小的間隙，由于葉輪互為反方向勻速旋轉，使箱體和葉輪所包圍著的量的氣體由吸入的一側輸送到排出的一側。

2. Two three leaf impellers are set on two parallel shafts. There is always a small gap between the wheel and the inner hole surface of the oval box and each impeller. As the impellers rotate at a uniform speed in the opposite direction, the amount of gas surrounded by the box and the impeller is transmitted from the suction side to the discharge side.

3、各支葉輪始終由同步齒輪保持正確的相位，不會出現互相碰觸現象，因而可以高速化，不需要內部潤滑，而且性能穩定，運轉平穩，結構簡單，適應多種用途，已運用于廣泛的領域。

3. Each impeller is always kept in the correct phase by the synchronous gear without touching each other. Therefore, it can be high-speed, does not need internal lubrication, and has stable performance, stable operation, simple structure, and is suitable for a variety of purposes. It has been used in a wide range of fields.

4、羅茨風機通過改變風機出口的閥門開度來調節風量或通過改變水泵入口管路上的調節閥開度來調節給水量。而風機和水泵的特點是負載轉矩與轉速的平方成正比，通常污水處置系統上的羅茨風機、水泵都是電機以定速運轉。

4. Roots blower adjusts the air volume by changing the valve opening at the outlet of the blower or the water supply by changing the opening of the regulating valve on the inlet pipeline of the water pump. The characteristic of fans and pumps is that the load torque is proportional to the square of the speed. Generally, the roots fans and pumps in the sewage treatment system operate at a constant speed.

5、而軸功率與轉速的立方成正比，因此如將電機的定速運轉改為根據需要的流量來調節電機的轉速就可節約大量的電能。污水處置系統中，羅茨風機的主要作用是給生化系統沖氧，使生化系統有充足的氧氣，生化池里放一個在線溶氧儀，溶氧儀上設定水。

5. The shaft power is directly proportional to the cube of the speed, so if the constant speed operation of the motor is changed to adjust the speed of the motor according to the required flow, a lot of electric energy can be saved. In the sewage treatment system, the main function of Roots blower is to flush oxygen to the biochemical system, so that the biochemical system has sufficient oxygen. An online dissolved oxygen meter is placed in the biochemical tank, and water is set on the dissolved oxygen meter.

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