摘要：其原理是：高压工作流体（通常为水或蒸汽）经过喷嘴后高速喷出，在喷嘴出口形成低压区，从而吸入被输送的介质。两股流体在混合管内充分混合后，经扩散管减速，压力恢复并排出，实现连续运行。

一、水力喷射器的工作原理

1. Working Principle of Hydraulic Ejectors

水力喷射器（也称为喷射真空泵或射流泵）是一种利用高速流体射流产生负压，从而实现气体或液体输送与混合的设备。

A hydraulic ejector (also known as a jet vacuum pump or jet ejector) is a device that uses a high-velocity fluid jet to create a vacuum, enabling the transfer and mixing of gases or liquids.

其原理是：高压工作流体（通常为水或蒸汽）经过喷嘴后高速喷出，在喷嘴出口形成低压区，从而吸入被输送的介质。两股流体在混合管内充分混合后，经扩散管减速，压力恢复并排出，实现连续运行。

The principle is as follows: the high-pressure working fluid (usually water or steam) is discharged through a nozzle at high speed, creating a low-pressure zone that draws in the secondary fluid. The two fluids mix thoroughly in the mixing chamber, then decelerate in the diffuser, where pressure is recovered and the mixture is discharged, achieving continuous operation.

由于没有任何运动部件，水力喷射器结构简单、可靠性高、几乎无需维护，适用于腐蚀性介质、高温或含固体颗粒的工况。

Since it has no moving parts, a hydraulic ejector features a simple structure, high reliability, and minimal maintenance requirements. It is suitable for handling corrosive media, high-temperature conditions, or fluids containing solid particles.

二、水力喷射器的主要应用

2. Main Applications of Hydraulic Ejectors

化工行业：用于真空蒸馏、溶剂回收、气体输送。

Chemical Industry: Used for vacuum distillation, solvent recovery, and gas transfer.

环保工程：用于污水处理中的气液混合与药剂吸入。

Environmental Engineering: For gas-liquid mixing and chemical dosing in wastewater treatment.

电力行业：应用于锅炉水系统、凝结水抽吸。

Power Industry: Applied in boiler water systems and condensate extraction.

造纸与食品行业：用于稀释、混合和卫生级输送。

Paper and Food Industries: For dilution, mixing, and sanitary fluid transfer.

凭借能耗低、寿命长、安装简便等优势，水力喷射器已成为多行业节能设备的重要组成部分。

With advantages such as low energy consumption, long service life, and easy installation, hydraulic ejectors have become an essential part of energy-efficient systems in many industries.

三、知名品牌推荐

3. Recommended Brands

上海上诚泵阀制造有限公司（Shanghai Shangcheng Pump & Valve Co., Ltd.）

上海上诚泵阀是一家专业从事泵阀设备研发与制造的企业，其水力喷射器采用优化流体通道设计，喷嘴与混合腔匹配精确，抽吸效率高、运行稳定，广泛用于化工、制药、环保等系统。

Shanghai Shangcheng Pump & Valve Co., Ltd. is a professional manufacturer specializing in pump and valve equipment. Its hydraulic ejectors feature optimized fluid channel design, precise nozzle matching, high suction efficiency, and stable operation. They are widely used in chemical, pharmaceutical, and environmental systems.

东方泵业（dongfang Pump Industry）

东方泵业在水处理与环保设备领域拥有成熟经验，其喷射器产品注重节能设计，可根据客户需求提供多种规格与系统集成方案。

dongfang Pump Industry has extensive experience in water treatment and environmental equipment. Its ejector products focus on energy-saving designs and can be customized with various specifications and integrated solutions.

日本荏原（EBARA）

荏原是国际知名流体设备制造商，其水力喷射器以高精度制造和卓越耐用性著称，常用于真空系统及高温工况。

EBARA, a world-renowned manufacturer of fluid machinery, is known for its precision-built and highly durable ejectors, commonly used in vacuum systems and high-temperature environments.

四、总结

4. Conclusion

水力喷射器因其结构简单、运行可靠、维护方便，在各类流体系统中发挥着重要作用。

Hydraulic ejectors play a vital role in fluid systems due to their simple structure, reliable performance, and easy maintenance.

在选购时，建议结合使用介质、工作温度与压力范围，选择具有技术实力与良好售后服务的品牌。

When selecting an ejector, users should consider the type of medium, operating temperature, and pressure range, and choose brands with strong technical expertise and after-sales support.

若追求国产高性价比产品，可优先考虑上海上诚泵阀和东方泵业；若关注国际高端设备，可选择日本荏原（EBARA）等品牌。

For cost-effective domestic options, Shanghai Shangcheng Pump & Valve and dongfang Pump Industry are recommended; for premium international equipment, EBARA is an excellent choice.

来源：机械流体解说