Vacuum valves in china door refers to the vacuum system components used in the vacuum system to change the direction of air flow, adjust the size of the air flow, and cut or connect the pipeline. It refers to the valve whose working pressure is lower than the standard atmospheric pressure. Vacuum valves in china door closing parts are sealed with rubber seals or metal seals. So how much do you know about the role of Vacuum valves in china? Follow the editor of china Vacuum magnetic valve for a simple understanding!
1. Open and close the air circuit. When valve 1 and valve 4 are closed and valve 2 is opened, the mechanical vacuum pump III vacuums container I, and the air flows through the pre-vacuum pumping pipeline; when valve 2 is closed and valve 4 is opened, the mechanical pump can Vacuum the diffusion pump alone; when valve 1 and valve 4 are opened at the same time, the diffusion pump and the mechanical pump can work at the same time to evacuate the container, and the airflow flows through the diffusion pump at this time. It can be seen that the function of the valve in this operation is to switch the air path and change the route of the air flow.
2. Control the air flow and adjust the vacuum degree. In the figure, adjust the opening angle of the valve cover of valve 1 to adjust the amount of air flow through the pipeline; close valve 2 and valve 4, and use the air release valve 3 to give the mechanical pump Ⅲ The inlet of the container is put into the atmosphere; the vacuum degree in the container can be adjusted through the bleed valve 5.
3. Quantitative inflation. There is a small hole of a certain volume in the plunger of the glass valve. When the small hole is turned to the right and connected to the high-pressure gas cylinder, the small hole can be filled with high-pressure gas; when it is turned to the left and connected to the vacuum container , Put the volume of high-pressure gas into the container, which plays the role of quantitative inflation.
The above is about the editor of China Vacuum magnetic valve: a brief introduction to the relevant knowledge about the role of Vacuum valves in China.