The structure and working principle of vacuum butterfly valve

Vacuum technology plays an indispensable role in today’s scientific research and industrial production.In order to ensure the efficient operation of the vacuum system, various key components are crucial.Among them, vacuum butterfly valve, as a key component with simple structure, large conduction capacity and reliable operation, is attracting increasing attention.This article will explore the working principle of vacuum butterfly valves and their wide range of applications in different fields.

一、Working principle of vacuum butterfly valve

The working principle of the vacuum butterfly valve can be summarized as opening and closing the valve by rotating the butterfly plate fixed on the rotating shaft 90°.This simple yet sophisticated design allows it to play a key role in vacuum systems.Whether manual, pneumatic or electric, vacuum butterfly valves can quickly and reliably control air flow to ensure the normal operation of the system.It is worth mentioning that the vacuum butterfly valve has a self-locking function in both the open and closed positions, which means that once the valve reaches the desired position, it will remain there stably and will not accidentally close or open, thereby improving the stability of the system. sex.

二、Advantages of vacuum butterfly valve

Compared with other vacuum valves of the same diameter, vacuum butterfly valves have a series of obvious advantages, including:

1、Simple structure: Its simple design consists of fewer components, reducing the possibility of maintenance and failure.

2、Large ventilation capacity: The rotating design of the butterfly plate enables it to provide greater ventilation capacity and is suitable for various vacuum systems.

3、Short structural length of the valve body: Compared with other valves, the vacuum butterfly valve has a shorter structural length and takes up less space.

4、Fast opening and closing speed: Whether it is manual, pneumatic or electric, the vacuum butterfly valve can respond quickly to achieve fast opening and closing operations.

三、Application scope of vacuum butterfly valve

1、Small diameter vacuum pumping system: small diameter (nominal size DN25 ~ 300) vacuum butterfly valve, in the vacuum pumping system, can be used to connect or cut off the air flow in the pumping pipe.

2、Large diameter vacuum system: Vacuum butterfly valves above DN300 are suitable for large vacuum systems, such as particle accelerators, fusion reactors, etc.

3、Diversified temperature requirements: The medium used by the vacuum butterfly valve is clean air and non-corrosive gases that do not contain particle dust.Different sealing materials can be selected according to needs, such as nitrile rubber for high vacuum systems with a medium temperature of -25 to 80°C, and fluororubber sealing rings for ultra-high vacuum systems with a baking temperature of 150°C.

The above is an introduction to vacuum butterfly valves. Vacuum butterfly valves play a key role in the field of vacuum technology with their simple and efficient working principles and wide range of applications.Its simple structure, large conduction capacity, and fast opening and closing speed make it an indispensable component in various vacuum systems.