Rotary Screw Air Compressors - ELGi Equipments Ltd India

WHAT IS A ROTARY SCREW COMPRESSOR AND ITS BENEFITS?

Rotary screw air compressors are rotary positive displacement machines capable of high-speed operation over a wide range of operating pressures and flow rates at high efficiencies. In screw air compressors, there are no valves or other mechanical forces that can cause imbalance. This allows a compressor to operate at high speeds while combining a large flow rate with small exterior dimensions. The main advantage of using a rotary compressor is that it can supply compressed air continuously with minimum fluctuation in delivery pressure and generate less heat than other types of air compressors, which increases energy efficiency. Other advantages of using rotary screw air compressors include

Rotary air compressors are convenient and safe as they deliver air continuously for the required purposes, and the causes of any accident are minimal.
Rotary screw compressors can function at extreme temperatures, from high to low, and at any form of energy or temperature.
Rotary screw air compressors offer lower maintenance costs.
Rotary screw compressors are long-lasting as they have little or no capacity reduction.
These compressors are designed to run tools that generate more power than standard equipment.
Low noise output machine.
Minimum oil-carryovers as low as three ppm in an oil lubricated machine.

WHAT IS THE WORKING PRINCIPLE OF THE ROTARY SCREW AIR COMPRESSOR?

The Screw air compressor uses a rotary-type positive-displacement mechanism. The screw element consists of two rotors similar to a helix, each with a different shape and number of grooves/ teeth. Atmospheric air moves into the screw element, and as the air progresses along with the rotors, it gets compressed. The main characteristic of the screw compressor is a male and female rotor element that traps the air and compresses it as the volume reduces inside the airend gradually. The compressed air is released at the delivery end.

In an oil-injected rotary screw compressor, a thin film of lubricating oil ensures frictionless rotation. The oil also acts as a cooling medium as it carries away heat energy during the compression process. This oil is cooled in a heat exchanger before it re-enters the airend.
In an oil-free rotary screw type air compressor, a special coating on the rotors acts as a lubricating medium and helps dissipate the heat energy. No oil enters the airend which ensures a 100% oil-free air output.

The basic principle of a rotary-type screw air compressor is that the male and female rotors spin in opposite directions. The prime mover turns the rotor of the airend in a rotary screw air compressor. This develops a vacuum, which results in surrounding air being driven into the airends through the air filter. As the rotors turn progressively, air gets trapped in the spaces between the two screws (rotors).

Air is taken from the atmosphere and pumped into the rotary screw compressor through the air intake system. First, it passes through a filter that helps remove suspended particles from it. Next, the filtered air goes into the airend, which is the heart of the rotary screw air compressor. Here, the air is trapped within the spaces between the two rotors, with lobes that mesh with each other. As the rotors turn, they progressively compress the trapped pockets of air, discharging the compressed air at the outlet of the airend.

ELGi’s EN & EG series are good examples of best-in-class rotary screw electric air compressor technology.

INDUSTRIES THAT USE ROTARY SCREW AIR COMPRESSORS

Industries like food, beverage, and textile use rotary screw air compressors for their operations. The rotary screw air compressors are used in various applications like food processing plants, breweries, etc. Food and beverage companies rely on rotary air compressors to keep their finished products fresh. Textile companies make use of these industrial screw air compressors for drying and dyeing purposes.

Why should we buy a ELGi’s rotary screw compresors?

ELGi’s rotary screw air compressors are a popular choice for various industrial applications due to several compelling reasons. The key advantages of choosing ELGi’s rotary screw compressors are –

Efficiency – The innovative design of the rotary compressor offers desired energy savings and helps reduce power consumption and operating costs. The advanced technology of the eta-V rotors in ELGi’s screw compressors delivers high levels of efficiency.

Reliability – ELGi rotary screw compressors are strongly built with high quality components and ensure consistent performance and minimal downtime by reducing maintenance costs.

Compact design – ELGi screw type compressors are compact and can be beneficial for industries where space constraints are a concern. They are also easy to install in various industrial setups.

Low noise levels – Noise pollution can be a significant issue in industrial environments, affecting both workers’ well-being and regulatory compliance. ELGi’s rotary screw compressors are engineered with acoustic canopy and efficient bearings to lower noise levels, ensuring a quieter working environment and promoting better working conditions.

Versatility – ELGi screw compressors come with varying capacities and features to suit different applications and industries. Whether it’s for manufacturing, construction, automotive, or any other sector, ELGi engineers and manufactures air compressors and accessories for several applications.

The difference between rotary screw air compressors and reciprocating air compressors

The key difference between Rotary Screw Air Compressors and Reciprocating Air Compressors is the mechanism in which they compress air.

Why do air experts suggest screw air compressors?

The decision around choosing a suitable air compressor for your business goes beyond affordability and cost.

Making Screw Air Compressors Oil-free

It might be hard to believe but air compressors have been around for thousands of years.

FREQUENTLY ASKED QUESTIONS (FAQs)

How can I find a supplier or distributor of rotary screw air compressors near me?

information about our partners on this page https://www.elgi.com/in/partners/ in our website and click on the “Find an elgi dealer” button. Fill out the form and get details of nearby dealers.

Can you please provide me with the rotary screw air compressor price for the 5 HP model?

ELGi offers rotary screw compressors with a wide range of capacities. Please speak to our experts to find the right model for your requirements.

Are there specific safety guidelines for operating oil lubricated screw compressors?

To ensure safe operation of your air compressors, please refer to the operation manual. Consult our service team to know more about the air compressor installed in your premises.

What maintenance is required to ensure optimal performance and longevity of screw type air compressors?

Following the operation and service manual will help you run the screw air compressor optimally. Each model has its own defined maintenance schedule, and we advise the users to follow the same to ensure high uptime. For more information regarding your installation, consult our service experts at [email protected].

What is a screw element compressor?

The rotary screw compressor is also called a screw element compressor. The air end in a rotary screw air compressor is often referred to as the screw element, and this is where the compression takes place.