Traditionally an industrial vacuum pump would be linked with intense noise levels; high-energy costs and a high level of oil carry over. Much like with technological advancement and innovation within other air movement processes, the vacuum pump has undergone a wealth of improvements in efficiency, reliability and productivity in recent years. This shift in innovation has also led to much quieter vacuum pumps and economy of energy.
There are several types of vacuum pumps, with different attributes and functions. The first is the Rotary Vane, which is perfect within paper and printing applications. It works on a principal of centrifugal force on an eccentrically mounted rotor that has movable blades. Throughout the years there have been tweaks to design and innovation of this vacuum pump and with that a reduction of operational costs in line with an improvement in performance levels. With innovation has come a lower operating temperature, leading to greater levels of protection of oil consistency and better maintenance and life cycle. With design innovation there are fewer component parts required in newer models, minimising leaks and failure of the pump. Vacuum pumps are perfect for the handling of plastic, paper, printing and packaging materials.
The Liquid Ring vacuum pump provides high volumes of vacuum for applications such as filtration. It is the optimum in vacuum technology for extreme vapour loads and pumping gasses (both dry and wet). They are equipped with a fixed blade impeller, which as it rotates, throws out liquid through centrifugal force to form a ring around the casing circumference. This process seals the tips of the impeller and creates enclosed gas chambers between the blades.
A Dry Claw vacuum pump is suitable for all dry applications, such as clamping systems for CNC machines, moulding and drying processes, central vacuum supply systems and packaging lines. With no lubrication in the pumping chamber, this type of vacuum has no issues with possible contamination during any types of application process. It has two claw-shaped rotors running in different directions to each other and do not touch each other or the chamber, meaning that it is a vacuum with minimal wear and tear issues over time. It also ensures that it is one of the quietest vacuum pump technologies you can find.
The Rotary Screw vacuum pump is more suited to large industrial applications, such as the food packaging industries, where food products and canned goods are packaged ready for consumption. It is also great within the glass and plastics sector. The compressor screw technology used offers low maintenance, high standards of performance and lower levels of heat and noise when compared with oil sealed and dry vane pumps. It is pump technology that has been designed and optimised for use within very specific sectors and applications below 400 mbar. For any applications requiring pressure above that figure it is recommended that other forms of vacuum pump technology (see above) is utilised. The rotary screw is energy efficient and can be used with minimal vacuum flow depending on the application and parameters you have set it to work within.