Hydraulic injectors Hydraulic injectors are three types of mechanical devices with vacuum, condensation, and drainage. It is a nozzle that uses a certain pressure to distribute the water symmetrically and evenly into a certain inclination, and converges at a focal point. Due to the high velocity of the jet stream, a negative pressure is generated around the chamber to create a vacuum. In addition, the secondary steam is directly contacted with the jet stream to exchange heat. Most of the steam condenses into water, and a small amount of uncondensed steam does not. The condensed gas is also rubbed with each other by high-speed jets of water, mixed and squeezed, and is eliminated through the diffuser tube to create a higher vacuum in the chamber. The hydraulic injectors are widely used, mainly for vacuum and evaporation systems, vacuum pumping, vacuum evaporation, vacuum filtration, vacuum crystallization, drying, deodorization and other processes, are sugar, pharmaceutical, chemical, food, salt, monosodium glutamate, milk , Fermentation, and some equipment that is widely demanded by the light industry and defense departments. However, the current production of hydraulic injectors is relatively small and the variety is not complete. For this reason, after continuous improvement in recent years, multi-spray resistance and steam rings (guide plates) have been adopted, and multi-stage pumps have been used to inject water. The installation requires only 4.5 meters of height, improves and improves its performance, and has certain advancement. It is an innovation of vacuum condensing equipment and is well received by users around the country.

Structure and advantages:

The hydraulic injector is composed of a body, a cover, a nozzle, a nozzle seat plate, a guide plate, a diffuser pipe, and a one-way valve. The nozzle adopts a multi-nozzle structure so as to obtain a greater contact with water vapor. The area is conducive to the implementation of heat exchange and better vacuum effect. The nozzle seat plate is processed with precision and high precision, so that the jet flow is deflected and the jet pumping efficiency is reduced. The entire device is compact and precise in structure and has high strength. It is used in vacuum evaporation systems. Since the condensation of the condenser can be combined with the pumping action of the vacuum pump in one device at the same time, the process flow is greatly simplified. The use of vacuum pumps and old condensers can save equipment such as vacuum pumps, condensers, water separators, and the following advantages: (1) The hydraulic injectors are small, lightweight, and compact. The performance is relatively high, the power consumption is lower than the vacuum pump system, and the investment is saved. (2) The operation is simple and easy to maintain. It does not require full-time personnel to manage. Because there is no mechanical transmission part, the noise is low and no lubricant is needed. (3) It can be installed at the bottom of the floor and has a small footprint, which can save the construction area and installation cost of the plant.