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 evenly distributed at a certain angle, 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 tube, further enhancing the vacuum.
Working Principle
The hydraulic jet ejector creates a vacuum effect by forming a high-speed jet of water, which generates a negative pressure. The high-speed jet of water produces 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. The uncondensed steam and non-condensable gases are then expelled through an expansion tube, further enhancing the vacuum.
Structural composition
The hydraulic jet atomizer is mainly composed of the body, cover, nozzle, nozzle seat plate, guide disc, diffuser tube, and one-way valve, etc. The nozzle features a multi-nozzle design to achieve a larger steam contact area, which is conducive to heat exchange and yields a better vacuum effect. The entire assembly is compact, precise, and highly robust, suitable for vacuum evaporation systems, where it can simplify the process flow 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, chemicals, food processing, salt production, monosodium glutamate, milk, fermentation, and some light industry and defense sectors.
