2023-03-25

Structure and Working Principle of Vacuum Flapper Valve

The working principle of a vacuum baffle valve is that the valve plate seals by moving up and down through the valve stem. There are three types of transmission components that drive the valve stem to move: manual, electric, and pneumatic. The manual transmission components are mainly threaded in structure, and can also use a flat cam structure. Figure 1 and Figure 2 are schematic diagrams of the structure of right angle and straight through vacuum flapper valves, respectively. The manual dual purpose transmission component consists of an electric motor, worm gear, and worm, and is equipped with a travel switch.

2023-03-25

Structure and working principle of vacuum ball valve

Vacuum ball valve is a type of vacuum valve developed in the 1990s. Its working principle is similar to a vacuum butterfly valve, which opens and closes the valve by rotating a ball fixed on the rotating shaft by 90 °. Vacuum ball valves have a faster opening and closing speed than vacuum butterfly valves, while their volume and leakage rate are larger than those of vacuum butterfly valves.

2023-03-25

Take you to understand the relevant technical parameters of vacuum butterfly valves

The working principle of a vacuum butterfly valve is to open and close the valve by rotating the butterfly plate fixed on the rotating shaft by 90 °. Compared with other vacuum valves of the same caliber, vacuum butterfly valves have the advantages of simple structure, large conductivity, short valve body structure length, and fast opening and closing speed. There are three types of vacuum butterfly valves produced in China: manual, pneumatic, and electromagnetic. Manual vacuum butterfly valves are suitable for small diameter (nominal size DN32-300) vacuum extraction systems, connection of extraction pipelines, or cut-off of airflow. Pneumatic and electric vacuum butterfly valves can have a maximum nominal size of DN5000.

2023-03-25

Vacuum Knowledge | How to Protect Molecular Pumps Well?

1. The molecular pump cannot exceed the usage environment and scope specified by the manufacturer.

2023-03-25

Vacuum Knowledge | The Relationship between Vacuum Degree and Absolute Pressure

Vacuum degree, as the name suggests, refers to the degree of vacuum. In a closed space, the fewer gas molecules there are, the higher the vacuum degree. Absolute pressure refers to the pressure exerted by gas molecules on the container wall in a closed space, and there is a close relationship between the two.