-
E-mail
18006168180@elmvac.cn
-
Phone
15852642786
-
Address
No. 3001 Cheng Road, West Shiqiao Town, Lingang New City, Jiangyin City, Jiangsu Province
Jiangyin Elm Vacuum Equipment Co., Ltd
Working principle of air-cooled Roots vacuum pump
Date: 2024-08-29Read: 0
The working principle of air-cooled Roots vacuum pump is to use the rotation of Roots impeller and the transmission of synchronous gear to compress and expand gas inside the pump body, thereby achieving the purpose of exhaust. It has the following steps:
1. Air intake stage
When the Roots impeller rotates, gas is drawn into the pump body along with the movement of the impeller. When entering the pump body, the gas is compressed by the rotating Roots impeller, and the spacing between gas molecules gradually decreases, causing gas molecules to collide with each other and produce compression. Meanwhile, as the Roots impeller rotates, the air inlet gradually closes from its initial open state, preventing gas from moving in the direction of backflow.
2. Compression stage
As the gas advances forward, the air pressure gradually increases with the movement of the Roots impeller. When the air pressure reaches its limit, the exhaust valve starts and exhausts the gas from the pump body. At this point, another counter rotating impeller also begins to intake and compress, achieving non-stop gas compression and discharge.
3. Exhaust stage
Under the control and regulation of the inlet and outlet airflow, the compressed gas flows out of the gas path through the exhaust valve and outlet. Under normal circumstances, when the exhaust pressure is not higher than the standard flange pressure rating, the system does not need to be equipped with additional explosion-proof devices.
4. Cooling stage
During the process of rotating the Roots impeller, a large amount of heat is generated inside the pump due to the heat exchange effect of gas compression and expansion. Therefore, it is necessary to cool the pump body and Roots impeller to maintain their working condition. There are two types of cooling methods: water metallurgy and air cooling. Air cooling is often used, which utilizes natural ventilation or forced air cooling to achieve cooling.
Last Article: The principle and application of slide valve vacuum pump
Next Article: Structure and Process Principle of Screw Vacuum Pump