Vacuum pumps are used for more than just for collecting sewage and slurry. They are more commonly used than you think. They are used in many industries for commercial purposes like automobiles, industrial processes, sewage systems and pharmaceuticals among others.
A vacuum pump eliminates the air in an enclosed space through suction. It gradually reduces the density of air in a restricted space where a vacuum is created. Following are the various types of vacuum pumps:
This works with a mechanism that continuously expands in an enclosed area, space or cavity to allow the gases to flow to an external chamber. Positive displacement pumps create low vacuums.
They make fluids move by trapping a fixed amount and displacing the trapped materials into the discharge pipe. Examples of positive displacement pumps are:
These are momentum pumps that work with high-speed fluids for fast-moving gas particles. These pumps are mainly used to achieve high vacuums and work in conjunction with different displacement pumps.
They are also called molecular pumps and have two classifications:
This type of vacuum pump uses the hybrid theory of a centrifugal and turbopump. This is also called a turbine. It uses blowers to remove the air out of an enclosed space to create a vacuum.
It is suitable for small flow rates and high discharge pressure. They are ideal for pumping pure liquids and large gas proportions. It is not suitable for polluted liquids and multiphase applications with low volume flow.
Entrapment pumps use cold temperature to compress gases into a hard state. This includes cryopumps, getters, and ion pumps.
It responds with gases and produces a hard residue similar to an ion pump which utilises tough electrical fields to push the ions as well as ionise gases into a hard substrate.
The basic operating principle of an industrial vacuum pump is always the same no matter what type of technology is used. Vacuum pumps remove air molecules and other gases from the vacuum chamber.
For the common household and small businesses, the following situations need the aid of vacuum pumps:
Examples of the work done under these services are: