A hydraulic jet ejector is a mechanical device with three functions: vacuum extraction, condensation, and drainage. It operates by utilizing a stream of water under pressure, which is ejected through nozzles with a certain slope and distributed symmetrically, converging at a focal point. Due to the high velocity of the jet stream, a negative pressure is formed around it, creating a vacuum inside the chamber. Simultaneously, the secondary steam comes into direct contact with the jet stream for heat exchange, with most of the steam condensing into water. The uncondensed steam and non-condensable gases are then expelled through an expansion pipe, further enhancing the vacuum level.
Working Principle
Hydraulic jet nozzles create a vacuum effect by forming a high-speed jet of water. The high-speed water jet generates negative pressure around it, creating a vacuum inside the chamber. The secondary steam comes into direct contact with the jet water for heat exchange, with most of the steam condensing into water. Uncondensed steam and non-condensable gases are then expelled through an expansion tube, further enhancing the vacuum.
Structure Composition
The hydraulic jet atomizer is primarily composed of components such as the body, cover, nozzle, nozzle seat plate, guide disc, diffuser pipe, and check valve. The nozzle features a multi-nozzle design to achieve a larger steam contact area, which is beneficial for heat exchange and produces an excellent vacuum effect. The entire assembly is compact, precise, and highly durable, suitable for vacuum evaporation systems, where it can simplify the process and save on equipment.
Application Fields
Hydraulic jet pumps are widely used, primarily in vacuum and evaporation systems such as vacuum pumping, vacuum evaporation, vacuum filtration, vacuum crystallization, drying, and deodorization processes. They are extensively applied in sugar production, chemical industry, food processing, salt production, monosodium glutamate, milk, fermentation, and some light industry and defense sectors.
