How to choose the right vacuum pump for your business? Which vacuum pump to choose? It is a problem that many buyers have to solve at the beginning. Today we first understand what is the difference between rotary vane pump and roots pump, and where the difference between the two is reflected.
Rotary vane vacuum pump and Roots vacuum pump are the mainstream pumps in the market, and the difference between the two is mainly reflected in the product structure, performance characteristics and application areas.
Roots vacuum pumps
Roots pump is a vacuum pump that relies on the synchronous and reverse rotation of a pair of leaf-shaped rotors in the pump chamber to move the gas and realize the extraction. The roots pump has no internal compression, so it cannot be pumped alone, and it needs to be equipped with a backing pump.
Roots pump features: fast start-up, low energy consumption, low operating and low maintenance costs, large pumping speed, high efficiency, and insensitive to the small amount of water vapor and dust contained in the pumped gas.
Rotary vane vacuum pump
Rotary vane pump: The eccentrically mounted rotor in the pump is tangent to the stator fixing surface, and two (or more) rotary vanes slide (usually radial) in the rotor slot and come into contact with the custom inner wall, dividing the pump cavity into several rotating variable volume vacuum pumps with several variable volumes.
Features of rotary vane pump: vacuum pump oil can be recycled, no fumes, clean, fuel saving; under low pressure can still maintain a high pumping speed; built-in filter element and filter, up to a high degree of filtration effect; built-in unidirectional valve, to prevent vacuum oil counterflow; good high temperature resistance.
The biggest difference between the two is that the rotary vane pump can be used alone, and the roots pump needs to be equipped with a backing pump. In addition, in the field of application, there are also great differences. According to different working conditions, thin film evaporation, large space, monocrystalline silicon, lyophilizer, power electronics industry, nuclear energy industry, metal industry, blister, atomic energy and other industries can choose roots pump or rotary vane pump; but in the field of vacuum packaging, vacuum filling, rotary vane pump application is more; in the field of machine tools and diesel engines, roots pump application is more common.
Which is more suitable for your company and production conditions, please consult Chinese Hokaido vacuum pump manufacturer for details.
