Types of Vacuum Pump

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Vacuum Pump

• Vacuum pumps are used in a variety of process
  plants to pump air, water vapor, organic and
  inorganic solvents and acids. There are many
  different types of vacuum pumps on the market
  today that meet special needs in pumping various
  gases.

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History of vacuum pumps

• Suction pumps go way back (Romans, Byzantine
  empire, etc)
• Major improvements on the idea of vacuum made by
  Galileo, Evangeilist Torricelli, and Blaise
  Pascal
• Otto von Guericke made first pump and famous for
  Magdeburg hemispheres experiment

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Types of Vacuum Pump

• 3 Types Of Vacuum Pumps
• Best Value Vacs Brand 3 CFM
  Single Stage Vacuum Pump

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• Vacuum pumps can be categorized as
• 1. Filtration vacuum pumps low vacuum pumps
  used in filtering, drying, degassing, and
  evaporation applications. Most laboratory/filtrati
  on pumps have vacuum and pressure capabilities
• 2.Rough vacuum pumps used in applications
  requiring a level of vacuum less than 103 Torr,
  such as degassing, freeze drying, and cryogenics
• 3.High vacuum pumps those vacuums higher than
  103 Torr, used for mass spectroscopy, electron
  microscopy, evaporation coating, and space
  simulation

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• Additionally, vacuum pumps may be dry,
  water-based, or oil lubricated
• Dry Pumps  (non-lubricated) offer a clean vacuum
  over the entire vacuum range. These pumps require
  little maintenance and dont generate any waste
  materials. Dry pumps do have a higher initial
  cost. Typical dry pumps include diaphragm,
  piston, scroll, and turbo molecular pumps.
• Water-Based Pumps provide a rough vacuum at low
  initial cost with minimum maintenance.
• These pumps are corrosion resistant but are
  unsuitable for water vapor sensitive systems.
  Another concern for these pumps is disposing of
  contaminated water. Common water-based pumps
  include water aspirator pumps.

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• Oil-Lubricated Pumps deliver high pumping speeds
  and a range of ultimate vacuum at an economical
  price. However, these pumps require routine
  maintenance and oil changes. The oil may
  contaminate your vacuum. The pumps also require
  inlet and outlet filters to protect the pump and
  the environment. Oil-lubricated pumps include
  rotary vane pumps and gear pumps.

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