Compressed air enters from the inlet of the single-stage vacuum generator and flows through the Venturi nozzle. As the cross-section gradually decreases, the pressure of the compressed air increases and the flow rate also increases At this point, a vacuum degree is generated at the inlet of the adsorption chamber, causing the surrounding air to be sucked into the vacuum generator and flow into the diffusion chamber along with the compressed air to increase the gas flow rate. Finally, it is sprayed out through the muffler In addition to a single-stage vacuum generator, there is also a vacuum generator that arranges several Venturi tubes in sequence together, called a multi-stage vacuum generator, which can generate much greater suction force than a single-stage vacuum generator Compressed air enters the multi-stage vacuum generator from the inlet and passes through multiple Venturi tubes connected in series. The nozzle converts the compressed gas into a high-speed airflow, carrying away gas molecules in the chamber and creating a vacuum at the end of the nozzle. The air is introduced from the inlet and the total suction capacity of all the connected nozzles is formed. The air sucked into the vacuum generator is finally sprayed out together with the compressed air through a muffler Vacuum generator Generally composed of a shell, nozzle, muffler, andIt consists of several parts such as a vacuum gauge.