The Types and Benefits of Using a Vacuum Pump for Industrial Purposes

When you are dealing with industrial-related processes, you probably heard of vacuum pumps as an important part of the automated and mechanical devices that you are using at work. Some of you are not even aware that this is a system or mechanism that makes other or connected machines to function properly. That’s why you have to learn about this vacuum pump, especially when you are working with experts like industrial engineers or researchers and exposed to various equipment or machinery.

A vacuum pump is actually a special mechanism used in manufacturing for industrial or scientific experts to eliminate elements like gas particles and air from particular storage where vacuum is produced. This is usually present in the production of various products, such as electric bulbs, CRT tubes, and glass coating to name a few. The vacuum pumps used will depend on each type and category, since industrial applications and needs vary for each manufacturer, especially when technology is involved.

You should also know that every type has its own benefits to the user or your business. The choice is based on how economic it would be, how it will be used, and the length of time you will use it in the engineering or manufacturing industry. Aside from that, options will also depend on displacement classification which is either positive or nonpositive. Positive displacement produces space through isolation and compression of distinct air, while a nonpositive displacement accelerates air as well as produces vacuum through impeller blades.

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Rotary Vane

This is a type of pump that functions through gas that needs to pass through an inlet port. Through the vanes or rotors, the gas will then be trapped or stored in a chamber and will be compressed for expulsion with the help of an exhaust valve. Anyway, the vane’s length may decrease or increase so that it can fit in the chamber, that’s why it is loaded with spring – go to  for further reading.

By the way, when the pressure inside the chamber already exceeds or meets the allowed atmospheric pressure, it will discharge gas. You have to consider the tolerance as well as the level of stages to achieve your desired pressure. Here, they use a lubricant like oil in sealing and cooling down the vanes. So how can this be beneficial to your scientific or industrial needs?

If you will compare this to the screw pump, then this type is more robust that’s why when it comes to maintenance expenses, it is actually lower and it will take you 10 to 15 years before finally overhauling it. This may be cheaper but when this system breakdown, it can be repaired without the need to pull it out so on-site repair is possible. The power consumption is almost the same with the screw pump but much lower than the other types. With this, a lower level of vacuum is achieved and it works fine in normal operations. 


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The screw pumping system uses screw rotors in operating a VRU. Here, the two rotors are both rotating in opposite ways or directions. Through this system, the gas will be trapped between the chamber and cylinder. After that, it will be transported to the gas discharge. It looks like the work is easy but it has to be manipulated with the right skills and expertise to avoid failure in its operation – check this out to learn more.

What’s really good with this mechanism is the low cost of maintenance because you only need to change the spare part like the filter after operating the machine for 2000 hours. Though you may have to change the oil when necessary. Power consumption is lower than the other mechanisms but in some conditions, the consumption is almost the same. These two reasons are good enough that’s why other industrial manufacturing companies prefer it.

With such low power consumed, a lower vacuum is also achieved at normal working conditions and operations. Another good thing about it is that you do not need oil separator, which means that explosion protection like bursting discs is not necessary. This means that it comes with a modernized design for pressure. But again, you need to operate and handle this machine correctly due to its very sensitive or delicate pumping system so when it fails, you cannot fix it on-site and you are required to bring it to the accredited repair shop.

Liquid Ring

With this type of pumping system, the gas will be compressed through a vane impeller that has to be rotated automatically to work. The impeller must be eccentrically situated in a casing or storage which is cylindrical in shape. You need to feed the pumping system with a liquid mixture like the glycol-water for cooling sorption. Through centrifugal acceleration, the liquid mixture will form a cylindrical ring. The impeller vane spaces will be filled with seals created by the liquid ring and forms into compressed chambers inside the casing or storage.

Eccentricity is formed between the axis of rotation and geometric axis of the impeller and casing. This also resulted in a volume of cyclic variations in which the ring and vanes enclosed. These variations are comprised of gas particles that are discharged and pass by the end port of the storage or housing. This only shows that the liquid ring pumping system is quite simple, though the design is robust since the impeller and the shaft are the only parts that are moving. However, it still benefits the engineering industry, especially in the manufacturing and production of units.

The capacity is about 20.000 m3/h, but it is actually cheaper than other mechanisms and the maintenance cost is also cheap because of the robustness feature, so purchasing a spare part will not be a burden on your pocket – robust to physical pollution like dust. In fact, you will only need a minimal amount of glycol when necessary to refill and it will even take a couple of years even when you are not using filters. Not only had that because it is designed with a variety of sealing as well as materials that are specifically meant for its purpose or requirement.

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