Vacuum pumps

There are many different types of vacuum pumps, but the main function of a vacuum pump is to suck liquids or gases out of a container. Air or liquid is sucked or pumped out, leaving a void with vacuum pressure.

Vacuum pump and air blower
Vacuum pump and air blower

Types of vacuum pumps are used in household and commercial vacuum cleaners, for vacuuming food or for vacuum packaging other products. In industry, they are applied in many production lines and systems, such as in food, in cosmetics, in the molding of plastic or glass…

What is a vacuum pump?

A vacuum pump is a type of pump used to reduce liquid pressure, relative to atmospheric pressure, to remove excess air and its particles. In some developed industries, vacuum requirements often come first. Therefore, vacuum pumps play an important role in many systems and production lines. Especially in the healthcare and F&B industries.

These pumps are classified into several types and are used in different applications according to the vacuum and displacement requirements.

Types of vacuum pumps
Types of vacuum pumps

The working efficiency of a vacuum pump mainly depends on parameters such as pump speed and flow. Some applications even calculate pump capacity in terms of suction capacity & vacuum capacity in Hg.

Construction of vacuum pump

To be honest, there are many different types of vacuum pumps in use in practice. Therefore, it is not possible to state the exact construction of the vacuum pumps. You can refer to a basic vacuum pump line as shown in the image below.


Construction of vacuum pump
Construction of vacuum pump

But in terms of basic theory, the vacuum pump has a very simple structure. They consist of many constituent parts, the parts of which are:

    • Motor, depending on the application and pump chamber, select the motor with the appropriate capacity
    • Pump chamber, in the pump chamber, there are many parts such as
      • Impeller: Takes on the role of moving the object out of the area to be vacuum treated
      • Pump shaft: The link between the impeller and the pump motor, helping to transfer kinetic energy from the motor to the impeller.
      • Seals and flanges: Seals the pumping process
      • Suction head: The task is to suck the object to be treated into the pump chamber
      • Discharge head: Push the subject out of the pump chamber
      • Mounting bracket: Hold the pump in place, to prevent movement and vibration when the pump is in operation

Working principle of vacuum pump

In essence, all vacuum pumps work the same way. Vacuum is created by moving most of the gas or liquid molecules out of the area to be treated by creating a pressure difference concerning the atmosphere. As a result, an area with fewer particles will have a lower pressure – or a vacuum – while an area with more particles will have a higher pressure.

Today, most vacuum pumps operate on one of three principles: volume, momentum, or rotation. While both momentum and rotary pumps are used to create high and super-high vacuum conditions, they require a lot of energy and maintenance and are therefore expensive to operate.

Principle of vacuum pump
Principle of vacuum pump

On the other hand, the majority of industrial and commercial vacuum pump usage is accomplished by volumetric pumps, such as screw vacuum pumps. Use the steady, consistent power of a double screw or screw, to vacuum in a sealed chamber and create a vacuum.

Classification of vacuum pumps

Industrial vacuum systems can be classified into the following pressure ranges:

    • Coarse / low vacuum: 1000 to 1 mbar / 760 to 0.75 Torr
    • Fine/medium vacuum: 1 to 10-3 mbar / 0.75 to 7.5-3 Torr
    • High Vacuum: 10-3 to 10-7 mbar / 7.5-3 to 7.5-7 Torr
    • Extremely high vacuum: 10-7 to 10-11 mbar / 7.5-7 to 7.5-11 Torr
    • Super high vacuum: <10-11 mbar / <7.5-11 Torr

There are five main known types of vacuum pumps in the world:

    • Rotary vane vacuum pumps
    • Diaphragm vacuum pumps
    • Liquid ring vacuum pumps
    • Scroll vacuum pumps
    • Turbomolecular vacuum pumps

But in the Vietnam market, there are the most popular, best known, and used vacuum pumps such as:

    • Oil ring vacuum pump
    • Water ring vacuum pump
    • Dry vacuum pump
    • And pneumatic vacuum pump

Your choice of vacuum pump will depend on the type of vacuum needed, but also on the price and durability of the technology required.

Vacuum pump accessories

Normally, the vacuum pump accessories that will often have to be replaced are the seals, seals, impellers, screws… Because during operation, these parts are most susceptible to physical damage and wear and tear.

Replacing these accessories requires technical knowledge as well as a thorough understanding of the pump line, for easy and technical disassembly.

Vacuum pump accessories
Vacuum pump accessories

Thai Khuong besides providing genuine products and vacuum pump lines of EU origin, there are always spare parts and accessories for vacuum pumps at the service warehouse. The purpose is to ensure the effective operation of all pump lines that Thai Khuong provides throughout the territory of Vietnam.

In addition, Thai Khuong is also ready to provide service support for pump replacement and repair needs that are not provided by Thai Khuong. Provide a reliable address in the service of industrial pumps. If you have any needs, please contact Thai Khuong!

Repair vacuum pump

Repair vacuum pump? Why not. Any equipment in the process of operation without damage. Especially pumps, especially vacuum pumps. Because of this pump line, it is not like ordinary liquid suction pumps. So catching the disease and fixing it is also quite difficult.

But with Thai Khuong’s service, will help you to take care of the maintenance and repair as well as repair and replace spare parts and accessories for pumps.

Vacuum pump repair
Vacuum pump repair

So, when you need or fall into this situation, your job is simply to pick up the phone and call Thai Khuong. Thai Khuong will help you diagnose and troubleshoot.

Advantages and disadvantages of vacuum pump

Some advantages of vacuum pump can be known as:

    • Create a vacuum quickly and safely.
    • Stable operation, there are many options for pump type to optimize pump performance and capacity.
    • Can be used to pump toxic objects and substances without polluting the processing environment.
    • Eliminate blockages on piping systems or tanks

Besides, the vacuum pump also has disadvantages:

    • Limited working temperature
    • Affected by viscous liquid
    • Some lines are only suitable for certain pumps
    • The suction pressure of the pump is limited to the vapors of the liquid inside the pump

Application of vacuum pump

These pumps are used in a wide variety of industrial applications. Typical examples are: high precision plastic molding, vacuum tube manufacturing, CRT lamps, electric light bulbs, semiconductor processing, dry etching, especially ion implantation and deposition of ALD, PVD, CVD, etc. & PECVD in photolithography, …

Vacuum pump application
Vacuum pump application

Vacuum pumps are also used to provide support for mechanical devices. For example, this pump can be located on engines in hybrid & diesel vehicles. Powering vehicle components such as hydraulic brakes, dampers, throttle controllers and door locks, etc.

These vacuum pumps are used in aircraft and are commonly used to control gyroscopes in many types of aircraft equipment.

In addition, the vacuum pumps are also applied in scientific, medical and industrial fields such as pulp, cement, paper, power plants, sugar factories, chemicals, pharmaceutical factories, etc. …

Vacuum pump price

Vacuum pump price is always a keyword that many people search for. But it will be difficult for you to get a satisfactory answer from the internet. Simply because of the price it is related to a lot of factors involved. Eg:

    • Origin of the pump
    • Pump capacity
    • Trademark
    • Structural materials…

Therefore, for the most accurate information, please contact the supplier. With Thai Khuong, when contacting, you will be consulted wholeheartedly from the stage of selecting the pump according to the system requirements, to the process of handing over the installation and operation, maintenance and maintenance of the equipment.

When you have a need, do not hesitate, contact Thai Khuong immediately!

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