The working principle of a vacuum ejector is based on the Venturi effect, which uses a low-pressure area generated when a high-speed fluid (usually air or steam) passes through a nozzle to extract and transport gas or liquid.
Specifically, when a high-speed fluid passes through a nozzle, its speed increases and the pressure decreases, creating a low-pressure area around the nozzle. This low-pressure area can attract and extract surrounding gas or liquid, bringing it into the interior of the injector. The extracted gas or liquid is then mixed with high-speed fluid, accelerated and compressed in the mixing chamber, and finally discharged through the discharge port.
By adjusting fluid flow and nozzle design, you can control vacuum ejector performance, including extraction speed, extraction volume, and vacuum level. Vacuum ejectors are typically used where a vacuum needs to be generated or maintained, such as in laboratories for gas sampling and analysis, or in industrial processes for gas recovery and processing.
It is important to note that the operating principles of vacuum ejector may vary depending on the specific design and application. Therefore, in practical applications, the appropriate vacuum ejector type and parameters need to be selected according to specific needs and conditions.
its scope of use
Vacuum ejector has a wide range of uses and can be used in the following fields and processes:
Industrial power and energy saving: Vacuum ejector (also known as pressure matcher or steam injection heat pump) plays an important role in textile, papermaking, petroleum, thermoelectric and other industries that use steam as power. It is mainly used to promote steam circulation, increase low-pressure steam pressure, and achieve comprehensive utilization of different levels of pressure steam, thereby achieving significant energy-saving effects.
Exhaust and gas treatment: Vacuum injection exhaust devices are often used in closed systems such as heating or refrigeration. They are used to solve problems such as air blockage and whistle caused by gas in the system and improve the thermal economy of the system. It is suitable for use in a variety of industries, including electric power, petrochemicals, steel metallurgy, textiles, food production, ships, automobiles, and civil heating and refrigeration.
Vacuum process and operation: Vacuum ejector is widely used in the vacuum suction process in light industry, chemical industry, pharmaceutical, vacuum smelting, sugar making, salt making, monosodium glutamate, chemical fiber, food, plastic rubber, ceramics and other industries. These processes include material absorption and transportation, condensation, distillation and evaporation, concentration, decolorization and deodorization, oxygen supply and deoxygenation, dry crystallization and filtration, chemical absorption, tail (waste) gas neutralization, etc.
Jet propulsion and mixing: As a power device, the ejector is widely used in the aerospace field, such as jet aircraft and missiles, to increment, pressurize and improve thrust by pumping the ejection gas. At the same time, it can also be used for injection mixing and reactions in chemical production. By producing strong mixing, it can shorten the reaction time, reduce the reactor volume, and reduce production costs and equipment investment.
Fluid transportation and mass transfer: Vacuum ejector can also use high-speed fluid to suck and transport another fluid. It is suitable for various harsh working environments, such as seabed, deep wells, toxic environments, etc.
To sum up, vacuum ejector plays an indispensable role in multiple industries and fields with its unique working principle and wide range of applications.
Industrial applications, which industry has the most
In industrial applications, although vacuum ejectors are widely used, there are currently no exact statistics on which industry has the most applications. However, based on the working principle and characteristics of vacuum ejector, it can be speculated that its application may be more common in industries that need to generate or maintain vacuum, gas processing, or fluid transportation.
For example, in chemical, pharmaceutical, food, textile and other industries, vacuum ejectors are often used in material absorption and transportation, vacuum suction technology, exhaust gas treatment, etc. These industries need to handle large amounts of gases and liquids during the production process, and have higher requirements for vacuum and fluid control. Therefore, the application demand for vacuum ejector is also correspondingly greater.
In addition, with the rapid development of the industrial machinery industry, the market demand for vacuum ejector, as one of the important industrial equipment, continues to grow. Especially after the normalization of epidemic prevention and control, large-scale infrastructure projects have started one after another, and the global demand for industrial machinery has remained unchanged. This has also provided good opportunities for the development of industrial equipment such as vacuum ejectors.
It should be noted that the specific needs and application methods of vacuum ejector may differ in different industries. Therefore, in actual applications, appropriate models and specifications need to be selected according to specific processes and conditions. At the same time, with the continuous advancement of technology and the expansion of application fields, the application scope and market demand of vacuum ejector will also continue to change.
