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The Many Uses of a Vacuum Pump

Even if we don’t notice their presence in our daily lives, vacuum pumps have been around for over three hundred years dating back to its invention in 1650 by Otto von Guericke.


There are many kinds but they can be categorized into 3 groups according to the way they function:

  • Momentum transfer: generally use high speed blades to suck air or gas from a particular space.
  • Entrapment : is a technique used to capture gases
  • Positive Displacement:  is based on expanding a cavity in order to make a specific gas enter and once it has, sealing the cavity and releasing the gas into another space (generally the atmosphere).

But Where Are They?

There are many uses to vacuum pumps specifically when it comes to industrial and scientific research processes ranging from simple milking machines to hard core science such as fusion research, uranium enrichment or the development of electron microscopy.

But in fact, they are a part of our daily lives even if we can’t actually see them. For example, did you know that the hydraulic brakes of your car work with this mechanism? Other motor functions like the cruise control or the door locks also have vacuum based functionalities.

Benefits of a Vacuum Pump on an Engine

Generally, a vacuum pump will only be of benefit for an engine that creates a significant amount of air or gas due to its high performance, by adding some horse power and increasing the life of the engine.

By putting a negative pressure on the machinery, it will reverse problems caused by the increase of pressure in the pan that pushes oil entrained in the air past the rings on the intake’s stroke and the valve guides

Other Functions

As we mentioned before, there are many kinds and the weapon of choice will vary according to wants to be accomplished: perhaps you would like a dry-running radial pump, or on the other end of the spectrum an oil-lubricated screw pump. Whether you are replacing an old part of a system or replacing the whole system itself the deciding argument generally boils down to energy conservation or low noise emission.


Importance of Hydraulic Cylinders

Have you ever paid attention to the importance of hydraulic cylinders in modern day construction? Every single tube you find on or under a machines arm while staring at a building in process is most likely one of these. As you may have guessed by the description given before, they are what power these arms in a unidirectional stroke in order to move or lift something which requires a lot of force.

The Power Itself

A hydraulic cylinder is made up of many parts like barrels and pistons, but mainly the force will come from a pressurized hydraulic fluid which tends to be oil. Inside the cylinder, this fluid’s flow is regulated by a pump which will in turn generate a pull force.

You will also find that there are two types of cylinders: Single acting and double acting.

  1. The first ones are simpler in design and generally cheaper. The oil enters through a port at one end of the cylinder, extending the rod which later gravity will send back into the piston.
  2. Double acting cylinders, on the other hand, have a port at each end and require the fluid to flow in or out of both sides for both movements (extension and retraction).

Different Designs

In the industry of hydraulic cylinders you will find many designs available:

  • Welded Body: it doesn’t have a tie rod and the barrel is welded directly into the end of the caps as well as the ports.
  • Tie Rod:  mostly seen in industrial factory applications, these hold the end caps using threaded steel rods.
  • Compact: utilized when the mounting space is expensive or difficult to acquire and the application demands a high force.
  • Telescopic: also called multi stage rod, due to the fact that it is actually a succession of rods tied together for force or distance required

Which One Should You Buy?

As you can see, there are many kinds of hydraulic cylinders in the market so the best thing to do is actually to ask for a professional’s help to suit your manufacturing or building needs. That way you’ll find the proper tool for the proper task.