Introduction
Oil-sealed vacuum pumps are dominant in the industries for decades. However, the proven advantages of dry vacuum pump technology bring a shift in the pharmaceutical, chemical, industrial, and petrochemical industries.
Dry vacuum pumps are versatile. You can control and operate them to do almost anything. Dry vacuum pumps offer an optimum solution, economic benefits, lower installation, running and maintenance cost, and above all, less environmental impact while providing a more flexible vacuum.
Let us differentiate between the dry vacuum pump and oil-sealed rotary vane vacuum pumps to understand the performance ratio of both. But before that, let us observe both types of pumps and their working principle.
Dry Vacuum Pump
Dry vacuum pump technology provides an apparent and calculable advantage in a wide variety of vital applications. A dry vacuum pump ensures that all the processing needs are attained, with a safe, reliable, and cost-effective solution. The dry vacuum pump works without water, no oil for sealing, and lubrication, thereby eliminating effluent generation, high treatment cost, and pollution. All this further helps to reduce waste disposal cost and maintenance costs.
Oil-sealed Rotary Vane Vacuum pump
Oil sealed rotary vane pumps are the most commonly used positive displacement vacuum pumps in the industry. As an established technology, they offer excellent reliability, compact design, robustness, and low-cost investment. They are often known as wet pumps as the pumped gas is exposed to oil for providing the seal.
Difference between Oil-sealed Vacuum pump and Dry Vacuum pump
|
Sr No |
Selection Parameter |
HIS Dry Vacuum Pump |
Oil Sealed Rotary Vane Vacuum Pump |
|
1. |
Use |
Process in which oil backstreaming is not needed, such as the Pharmaceutical and chemical industry. It is also used for distillation, degassing, sublimation, freeze-drying. |
The process in which oil is used as Medical, laboratory, and industrial. It is also used for Evaporation, Freezer dry, packaging, woodworking, paper production, and printing. |
|
2. |
Operation |
No lubricant or oil is used in this process and thus does not generate waste material |
Oil is used to seal the pump and cool the vanes and thus generate waste material |
|
3. |
Orientation |
Vertically mounted and hence, condensate drain out easily |
Horizontally mounted and hence, difficult to drain out condensed water |
|
4. |
Water cooling system |
Direct water-cooling & Indirect Water Cooling |
Water-cooled pumps are used separately. |
|
5. |
Ultimate vacuum |
0.06 Torr |
0.01 torr |
|
6. |
Capacity @ 1 Torr |
300 m3/hr |
170m3/hr |
|
7. |
Capacity @0.1 torr |
100 m3/hr |
Zero |
|
8. |
Vacuum drop |
Stable Vacuum Throughout the process |
Vacuum might fluctuate due to the contamination of the oil |
|
9. |
Vibration |
Lower compared to oil-sealed rotary vane vacuum pump |
Higher compared to dry vacuum pump |
|
10. |
Oil contamination |
No oil contamination due to dry pump |
Oil contamination issue arises frequently |
|
11. |
Oil replacement quantity |
No oil used |
50-60 litres per year Approx. |
|
12 |
Vane replacement |
No |
Yes |
|
13. |
In case of Pump Jamming |
The pump will be free after pouring diesel or suitable solvent. It takes 2-3 hours to free the pump |
Need change of oil or oil filter or exhaust filters |
|
14. |
Recovery cost |
Recovery of total cost in discharge |
No recovery cost possible |
Conclusion
In the end, we can see that a Dry Vacuum pump offers hygienic, 100% oil-free operation for the food processing, pharmaceutical, and chemical industries where no chance of contamination is allowed. With a compact design and whisper-quiet operation, it also has low operation and maintenance costs and is a good option as a green alternative. Our pumps come in standard configurations for quick and simple installations, and customized pumps as per client's requirements.
About HIS Pumps and System Private Limited
HIS Pumps and System Private Limited is a company pioneered in 1996 with an experience of over 30 years. We provide efficient industrial pumping technology, solutions, and services to the customers in the Chemical and Pharmaceutical sector all over India. We are engaged in sales, distribution and service of industrial pumps and pumping systems and provide solutions for various applications related to Process Vacuum, Extremely Corrosive, and Hazardous Liquids, as well as highly flammable liquids ensuring the safety of operation across all levels.
