What Is a Mechanical Booster Pump?
A mechanical booster pump is used to increase the capacity of an existing pump. It can dramatically increase the pumping speed.
Combined with a roughing pump such as an oil rotary vacuum pump or dry pump, the pumping speed can be greatly increased in pressure areas where the roughing pump’s pumping speed drops.
The disadvantage, however, is that backflow may occur. This is something to be aware of.
Uses of Mechanical Booster Pumps
A vacuum pump is a pump that can create a vacuum. There are a variety of products that can be manufactured by using a vacuum. They are used in a wide range of fields, including vacuum packaging, vacuum drying, vacuum distillation thin films, vacuum metallurgy, space exploration, vacuum impregnation, degassing, semiconductor processing, and low-density wind tunnel testing.
So-called roughing pumps, such as oil rotary vacuum pumps and dry pumps, do not have sufficient capacity in certain pressure regions, resulting in reduced pumping speeds. In such cases, mechanical booster pumps are used.
Principle of Mechanical Booster Pumps
The casing of a mechanical booster pump contains two gourd-shaped rotors. Each rotates in the opposite (inward) direction.
Each rotor is synchronized to create a vacuum inside at the right time. Gas drawn in from the intake side is trapped in the space between the rotor and the casing, and the rotation of the two rotors pushes the expected gas out to the exhaust side.
This type of mechanical booster pump is called a roots-type vacuum pump.
While the pumping speed decreases at a constant pressure with a roughing pump, the mechanical booster pump improves the pumping speed in the range of 10000 to 0.1 Pa.