Vacuum Pump for Environmental and Energy-saving Needs

 The dry-compressing Everest vacuum pump is oil-free and made by Everest Vacuum in India. Screw vacuum pumps are industrial vacuum pumps that are at the top of their class. The Dry Screw series is well-suited for many manufacturing processes. Pumps in industrial settings need to deal with not only clean air but also particles, dirt, and outgassing media and vapors. Some processes are not stable and may be affected by many factors. All of these factors must be tolerated by the pump. According to Everest Vacuum, screw vacuum pumps are the best option for these demanding requirements. By definition dry vacuum pumps do not use oil or water, unlike other oil-ring and water-ring pumps.  Thus, dry pumps are gaining attention in the industry.
 

 

Benefits of Everest Roots Vacuum Pumps:
 

1.  Large Inlet & discharge make it easy to maintain and inspect.
2. The high precision machined rotor results in high volumetric efficiency and can achieve strong vacuum levels of upto 0.01 mBar. 
3. The pump uses two-lobe root type rotors and achieves low noise levels and vibrations with properly balanced rotor motion.
4. The pump chamber does not require any lubricants. There is no oil backwash to the high vacuum side. This allows for a clean & 100% dry vacuum.
5. The shaft is sealed using a patented dry sealing combination, which has capability to withstand oil, dust and dirt contamination coming from the process. 
6. The pump emits no oil mist; this reduces the environmental impact as well as the health risks for the operator.
7. Operation can be started at atmospheric pressure, and performance is stable across a wide range of pressures, for machines that are coupled with variable frequency drives. 
8. It is possible to continue long-term operation without wear and maintenance is easy & economical.
9. You can drain and recover gas condensate.
10. This simple design provides outstanding durability.

Typical Installations of Dry Vacuum Pumps: 

• In Vacuum Desiccation

Because of their potential to damage the ozone layer, organic chlorofluorocarbon solvents like Freon and trichloroethane cannot be used in steam cleaning. For degreasing parts after washing, roots-type vacuum pumps are becoming a popular choice.
 

• In Vacuum Distillation

Vacuum distillation is a method that separates mixed substances into their constituents at low temperatures. Vacuum pumps made from dry roots are widely used in manufacturing equipment for food, pharmaceuticals, and vitamins.

• In Vacuum Packing

Vacuum-packing fresh foods such as vegetables, meats and fish are easier with oil-free vacuum pumps. Vacuum-packing precision components and antioxidation parts can also be done with dry roots vacuum pumps.

Why do dry vacuum pumps use in the chemical industry?

The dry screw vacuum pump is used in several different fields. However, this technology is broadly used in the pharmaceutical and chemical industries. But it’s relatively new in the vacuum pump technology, which is mainly ruled by the liquid ring technology. However, the main difference is that the dry screw vacuum pump doesn’t require operating fluid to condense the process gas.

Principle of vacuum pump

In a dry screw vacuum pump, two screw motors are placed in the opposite direction, which helps in pumping the process gas trapped between the cylinder and the screw chambers, which gets transported to the gas discharge. In the chemical process vacuum pump, cooling can be carried out through a high-quality air cooling process, resulting in uniform temperatures throughout the cooling process as it eliminates the need for an indirect cooling process or cooling water, which further wipes out cold spots. Meanwhile, the modern screw vacuum pump uses pitch screws, leading to pre-compression of the gases in the pump. 

Advantages of dry vacuum pumps

The dry vacuum pump is used in several different fields. Here are the following advantages of dry vacuum pumps are:

• High vacuum level
• It follows dry compression, which means no reaction or contamination occurs between operating fluid and possess gas.
• Energy efficient
• The chemical process vacuum pump is designed to function for almost all process gases due to its perfect temperature regulation and material selection.

Disadvantages of dry screw vacuum pumps

Here are the following disadvantages of dry screw vacuum pumps.

• As per the dry vacuum pump manufacturers, the dry screw vacuum pump can’t be used with those process gases which are likely to react under high temperature.
• Dry vacuum pumps are also sensitive to tiny particles which can enter the system.

In short, a dry vacuum pump is widely used in the chemical process due to its advantage of functioning under the high-temperature regulation and material used for making the dry vacuum pump. However, for better functioning under any chemical system dry vacuum pump which uses different compression systems must use various coatings to regulate better functioning. 

How to protect dry screw vacuum pumps from corrosion?

Vacuum plays a vital role in several industrial processes, including pharmaceutical and chemical processes. Whether in inertization, vacuum conveying, distilling, or drying, vacuum is generally used to make the procedure work smoothly, fastly, and safely. However, there are various types of vacuum technologies. These include:

• Liquid ring vacuum pumps and steam ejectors are the types of pumps used for decades to generate vacuum and work as robust workhorses.
• Rotary vane vacuum pumps are also used to generate vacuum, but they have one advantage: these pumps have recirculating oil lubrication that smoothens the industrial vacuum systems process.  

While liquid ring vacuum pumps don’t have recirculating oil lubrication thus, they require operating fluid to reach the process gas during the procedure.

 

 

 

Working principle of dry screw vacuum pump

Dry vacuum pumps consist of two screw rotors that rotate in clockwise and anticlockwise directions. While the pumped medium is sandwiched between the screw chambers and the cylinder. So it gets compressed and later transferred to the outlet for further procedure. However, during this procedure, a gap remains in between the screw rotors, and they never come in contact with the cylinder. Further, cooling can be done through water or air cooling.

How to protect the vacuum system?

Typically, vacuum pumps deal with several risk factors depending on the process gas. Thus, it’s crucial to use process gas which can minimize such risks. Further, to protect the dry vacuum pump, you must also focus on the various components that can be fixed on the pressure side or inlet. So it can quickly transfer the pressure gas without even damaging the pump.

It’s called a vacuum system, and to safely operate this vacuum system; it’s crucial to protect it from deposits and corrosion. It can happen due to polymerization or crystallization.

Protection against corrosion 

• Firstly, it’s crucial to prevent the entering of corrosive materials inside of the vacuum pump. It can be achieved by using gas scrubbers or upstream condensers.
• Secondly, use a specific operating temperature to keep the streaming process in the gas phase.
• Thirdly, it’s better to use compatible materials to boost the vacuum pump performance and prevent corrosion.  

In short, the dry screw vacuum pump can help perform the industrial vacuum systems process without the help of operating fluid. So it can compress the pressure gas to transfer to the outlet quickly. But for this, it’s better to use corrosive-resistant materials.

Types of Industrial Vacuum Pumps and their Applications

Industrial vacuum pumps have diverse applications in several industries. Mostly in every industry, the vacuum pump is required in some of the other means. Industrial vacuum pumps have a greater demand by chemical industries, food industries, hospitals, petrochemical industries, metal industries, restaurants, and so on. Whatever the application of the vacuum pump, there is an inclined vacuum pump that serves your purpose perfectly. 

Owning a vacuum pump for your industry is a great productive investment. Vacuum pumps for industrial applications are of 4 different types and the below-given information will help you to know which one is precise for your industry.

Types of Industrial Vacuum Pumps and their Application:

1- Liquid Ring Vacuum Pump

Liquid ring vacuum pumps have great industrial use as they can handle great vapor quantities, deal with dry and wet gases and water carrying out. It is widely used in paper production, melting metals, molding materials, soil remediation, refining of chemicals and petroleum, etc. The application includes sucking water from the machines and sucking air/gas from equipment.

2- Reciprocating Vacuum Pump

Reciprocating Vacuum pump is the conventional pump widely used in pharmaceutical, chemical, biochemical, and makeup industries. Reciprocating vacuum pumps, a part of  Industrial vacuum pump technologies, include features like higher airflow, efficient pressure, water cutting, customized pressure, etc to make it highly efficient and durable.

3- Rotary Vane Vacuum Pump

Rotary vane pumps have the most prominent use in the aerospace and automobile industries. The vacuum pumps are made with higher capacity models, customized horsepower, an efficient motor engine, and quality valves.

4- Dry Claw Vacuum Pump

Dry claw vacuum pumps are highly safe to use, giving the most effective outcome with very nominal noise levels. Twin rotary blowers are used in their function. These types of vacuum pumps are used in paper industries, packaging industries, wood industries, water waste associations, etc. Its features include durability, adequate strength, efficiency, and supreme performance.

Industrial vacuum pump technologies have advanced features that would support you to a great extent by making your work at ease. The right vacuum pump will merely work through your intentions.

Application of Vacuum in the Edible Oil Industry

 The vacuum allows the food processing that could not have been done in normal atmospheric conditions. Moreover, the vacuum has huge benefits on the processing of food items that are sensitive to heat and oxygen like edible oil. The vacuum that can be used in the food industry varies in the range of 1-600 mbar.

The vacuum which is applied in the edible oil industry apart from deodorization is also used for transport, processing, filling, and packaging of the edible oil. The vacuum system is also used in cleaning operations and the creation of appropriate hygienic conditions that are needed in an oil refinery.

Deodorisation of oil by the use of the vacuum system

While processing edible oil and fats, deodorization is essential to remove the undesirable compounds present in the oil such as free fatty acids and volatiles. These compounds need to be removed because they can deteriorate the taste of the final product. Not only the taste, the stability, odour, and colour of the final product might also get compromised if the vacuum system for edible oil deodorization is not there in the refinery.

Before the deodorization process, the refined oil is de-aerated under the vacuum and that is because the vacuum is necessary to keep the quality of the edible oil intact by the prevention of oxidation. The removal of the non-condensable gases is also done through the process of vacuum because the vacuum if not removed they often bubble on the surface of the oil which would then bring down the heat transfer rates.

After the removal of the gases, the oil is then transferred into the deodorization column after heating it well. After that steam is passed through the oil to remove the oil from any odour. As a precaution, so that the fatty acids and the volatiles are not carried into the final product, the stripped-off products are recovered in a condenser. This process is known as fractional distillation.

Vacuum pumps are of utmost importance for the final product of high-quality refined edible oil. Therefore, while investing the refineries must get in touch with the best vacuum pump manufacturers in India and have the best vacuum systems installed in the refineries.

Dry Screw Vacuum Pump and Its Advantages

 Dry screw vacuum pumps are the latest edition to the industry. These work on the principle of no lubricants i.e. no water, no oil, which makes the dry screw pumps ecologically sound. Dry screw pumps consist of two screws rotating in opposite directions and the gas moves in the screw's axis. They are designed in different configurations to meet different needs. They can be often used in combination with a variety of pumps to work for any specific requirement.

Principle of operation

The dry screw vacuum pumps are worked under a pump casing which consists of two screw rotors with no friction between them, supported by bearings. It sucks the air in and pumps the medium between the cylinder and screw chambers and then transfers it to the gas exhaust. These pumps are very stable and produce less noise and required no lubricating oil for application. These pumps have a wide range of applications in different industries like steel plants, agrochemical industries, and many more.

Advantages of dry screw vacuum pumps

Following are some of the advantages for dry screw vacuum pump-

It has a very high pumping capacity.
Friction-free operation in different chambers.
It does not require the consumption of fuel, and results in zero leakage.
The operation and maintenance cost is low.
Highly efficient for various operations.
The pumps have anti-corrosion coating, which makes them highly durable
Environment-friendly because of no water, no oil principle.
No contamination of medium as it is directly discharged from the pump body.
It has dust resistance properties.

Application

Dry screw pumps have various applications in industrial vacuum systems. It is used for the distillation of chemicals, biodiesel, oil, polymer industries, oil refining industries. It has wide usage even in the food industry for packaging, drying, and processing, these pumps are used because of their no contamination of medium quality. It has application in steel plants due to its dust resistance property and high durability.

Dry screw pumps are mainly used with equipment like reactor distillation, multi-phase transportation of liquid, gas, or solid, oil-water separating devices, wastewater treatment system, column distillation, fractional distillation, etc.

These are some of the advantages and applications of dry screw vacuum pumps, which is using widely in the pumping industry as a latest and advanced technology to fulfill the specific needs.

Working Principles of Different Types Dry Vacuum Pump

The significant development in vacuum pump technology has resulted in advances in the reliability, energy usage, noise levels, and overall performance of the machines. Here is the explanation of four main categories of industrial vacuum pumps.

Dry screw vacuum pump

The dry screw vacuum pump operates with two screw rotors rotating in the opposite direction. This technology is hallmarked by lowered heat and noise levels with higher performance levels. It traps the medium to be pumped between the cylinder and the screw chambers. Then, it transports it to the gas discharge.

The advanced screw models result in lower electric energy consumption compared to standard screw design. It also results in a lower heat load of the compressed gas. Within the housing of the vacuum booster, two pistons rotate synchronously.

Rotary vane vacuum pump

A rotary vane vacuum pump is a type of technology that enables the compression of the air inside the pump chamber. It creates suction for the removal of air molecules from a vessel. It follows the working principle of a positive displacement pump.

The design consists of a rotor that is mounted eccentrically inside a cylindrical stator. Blades, mounted inside the rotor, move in and out due to centrifugal force. It follows the internal surface of the housing.

Aluminum blades, rotors, housing, and housing cover bearings are lubricated with oil making them virtually wear-free. The dry vacuum pump doesn’t use any fluids to create a vacuum or contact the process gas and also discharge to the atmosphere.

Liquid ring vacuum pump

Liquid ring vacuum pumps are positive displacement machines providing process vacuum in industrial applications such as electrical power, chemical, food and beverage processing, environment, and textiles. Liquid ring vacuum pumps utilize water or other compatible liquids as the sealant.

The simple operation with no contracting parts makes liquid ring vacuum pumps a safe and reliable choice for handling dirty and potentially dangerous gas streams. Liquid ring pumps are optimal for handling extreme vapor load or in application with a high tolerance for liquid carryover.

The information mentioned above will help you to choose the right dry vacuum pump as per your need. Many agencies supply different types of vacuum pumps. You will get many options to choose.

Dry Vacuum Pump vs. Oil Seal Vacuum Pump

A wide variety of Industrial Vacuum Systems are available for different industries and various applications. Traditional Oil sealed pumps have made a permanent home in most of the Industries since long. But the latest technology has come up with dry vacuum systems that adds benefits in operation and maintenance charges.

Here is a clear comparison in oil sealed pump and dry vacuum pump to understand it's pros and cons in depth.

Dry Vacuum Pump

The name itself suggests that it does not use any oil or fluid to operate. Dry Vacuum pumps have good operations from atmosphere pressure to base pressure. But the point is, it does not work the same smoothly as wet pumps.

Dry pumps give clear and pollution free contamination and keeps the product chemical / oil free. The biggest advantage of dry vacuum pumps is oil free operation. Second advantage is, it can be fitted with any vacuum Booster pump to achieve high vacuum ranges.

But dry pumps have lower capacity as compared to oil sealed pumps. Oil changes are very frequent and maintenance costs are lower but in case of overhauls for bearing changes, it needs special tools and knowledge for the same.

Oil Sealed Pumps

Oil Sealed Pumps require oil and other fluid to operate. Industrial Vacuum Systems that are oil Sealed are durable when maintained properly. Oil Sealed Pumps are widely used in engineering fields. The working and mechanism of oil pumps are much simpler and easy to understand. It operates well for atmosphere to base and can be fixed well to external boosters in order to increase capacity and vacuum ranges.

On the other hand, managing waste toxic oil frequently can be a problem. And it is very important to handle and discharge the toxic materials very carefully. After a long run, it may be difficult to find spare parts in case of any repair issue.

Service and maintenance is difficult in the long run. But well, there are some parts and materials to repair and give a short term life to pumps.

Both the Industrial Vacuum Systems have their own benefits and drawbacks. So which type of pump to select depends upon your existing problem of your systems.