Information on vacuum pump that includes operation of vacuum pump, types of vacuum pumps, positive displacement vacuum pumps, momentum transfer vacuum pumps and entrapment vacuum pumps from PPI Pumps Pvt. Ltd., Ahmedabad, India
2. Introduction about Vacuum Pump
Vacuum pump is used to pull air or gases from a confined or sealed space. The air or
gas is sucked out leaving the space void of any or most of the air or gas molecules.
3. Introduction about Vacuum Pump
Different forms of vacuum pumps are used in household and commercial vacuum
applications like vacuum cleaning, vacuum sealing of food or other objects which are
damaged due to the harmful elements present in the nature and much more.
4. Introduction about Vacuum Pump
Otto von Guericke was the one who for the first time introduced to the world the
ever first vacuum pump in 1650. Pumping speed is the most important factor on the
basis of which vacuum pumps are usually compared or measured.
5. Basic Operation of a Vacuum Pump
The basic principle behind working of vacuum pumps is removal of air from the
enclosed system by suction to progressively decrease air density within the confined
space so that the absolute pressure of the remaining gas drops and vacuum is
created.
6. Basic Operation of a Vacuum Pump
A vacuum pump converts the mechanical input energy of a rotating shaft into
pneumatic energy by evacuating the air contained within a system. The internal
pressure level thus becomes lower than that of the outside atmosphere. The amount
of energy produced depends on the volume evacuated and the pressure difference
produced.
7. Types of Vacuum Pumps
There are basically three types of vacuum pumps.
Positive Displacement Vacuum Pumps
Momentum Transfer Vacuum Pumps
Entrapment Pumps
8. Positive Displacement Vacuum Pumps
In positive displacement pumps continuous mechanism is employed for expanding a
cavity. Here the gases are allowed to flow in from the chamber and exhausted to the
atmosphere after sealing of the cavity.
9. Transfer Type Vacuum Pumps
In transfer vacuum pumps momentum is created with a piston or propeller kind of
device in the pumps which pushes the gas around the inner parts of the pump. The
piston in the pump accelerates the gas and air molecules, creating an area of low
pressure.
The gas and air molecules begin moving away from the low pressure region and
escape through the outlet valve of the pump. When the desired amount has been
removed from the chamber, a closure valve is put into place to prevent the
molecules from being pulled back into the container from the pump.
10. Entrapment Pumps
To perform more effectively, trapping pumps or entrapment pumps are usually
placed inside the space or container to be vacuumed. These types of pumps work
using chemical reactions. Some entrapment pumps operate by removing the
condensation or thin film created by the molecules in the air when they chemically
react to the internal surfaces of the pump.
11. Contact Us
PPI Pumps Pvt. Ltd.
14 & 16 E, Phase I,
G.I.D.C. Estate, Vatva,
Ahmedabad - 382 445,
Gujrat (India).
Phone:+91 (79) 25832273 / 4
Fax:+91 (79) 25830578
E-mail:sales@ppipumps.com
