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Rotary Screw Vacuum Pumps

Vacuum pumps are vital for creating controlled vacuum environments in various industrial processes. Rotary screw vacuum pumps are a popular type due to their reliability, efficiency, and versatility. Learn more about how they work, their common applications, their benefits, and the options available from Buykaeser.

Rotary Screw Vacuum Pumps: Operating Principles and Design

Functioning on the positive displacement principle, rotary screw vacuum pumps use two screws to create a vacuum. As the intermeshing screws rotate in opposite directions, they trap air between the turning screws and the outer casing. The trapped gas travels toward the pump’s exhaust, creating a vacuum as it moves to the exit.

Rotary screw vacuum pumps can achieve vacuum pressure levels of up to 25 in Hg. They are also measured in different forms such as Torr and in H2o.

Types of Rotary Screw Vacuum Pumps

There are two types of rotary screw vacuum pumps: oil lubricated and oil-free. Oil-lubricated pumps require oil for lubrication, cooling, and sealing and are ideal for heavy-duty applications without clean vacuum needs, such as plastics manufacturing. Oil-free or dry pumps are air-cooled and emit no oil, so they are more eco-friendly and safer for sensitive applications, like food processing. They can also achieve a higher pressure vacuum than oil-lubricated pumps.

Applications of Rotary Screw Vacuum Pumps

Various applications rely on vacuum pumps to optimize safety and productivity:

  • Pharmaceutical/Medical Production: These industries use oil-free vacuum pumps for clean and sterile environments, sterile packaging, research in clean labs, and more.
  • Plastics/Rubber Manufacturing: Rotary screw vacuum pumps help to degas in injection systems and enhance product quality by reducing air gap-related defects.
  • Chemical Processing: These applications require a vacuum-controlled environment to produce various chemical reactions without contamination. Rotary screw vacuum pumps also assist wastewater treatment centers and landfills to recover volatile gases.
  • Electronic/Semiconductor Manufacturing: These high-tech markets need highly controlled environments to produce sensitive electronic products. Rotary screw vacuum pumps help create vacuum coatings, perform electron beam welding, manufacture semiconductors, and more.
  • Industrial Food Processing: Rotary screw vacuum pumps are commonly used in food processing and packaging, where they prevent product contamination and maintain optimal freshness.

Benefits of Rotary Screw Vacuum Pumps

Rotary screw vacuum pumps are versatile products that offer a range of benefits for many industries and applications. These key benefits include the following:

  • High Efficiency and Performance: Rotary screw vacuum pumps supply a stable, consistent vacuum level throughout every cycle of operation, boosting production efficiency.
  • Continuous Operation and Reliability: Their ability to provide constant, steady levels of vacuum means less downtime and higher productivity.
  • Low Maintenance and Operating Costs: Because they do not feature metal-on-metal contact, these pumps, especially oil-free models, do not need frequent maintenance. They are also designed to optimize energy use, further driving down operating costs.
  • Reduced Noise and Vibration Levels: Rotary screw vacuum pumps produce minimal noise and vibration, ensuring the comfort and safety of workers in close proximity to the equipment.

Rotary Screw Vacuum Pumps: Installation and Maintenance

When properly installed and maintained, rotary screw vacuum pumps can optimize production output, safety, and labor in your facility. Here are some tips on how to make sure your vacuum pump performs properly throughout its service life.

Proper Installation Practices

Installation should always be performed by trained and authorized personnel. The vacuum pump should be lifted with suitable equipment, with any loose parts secured properly prior to lifting. The machine should be installed in a well-ventilated area where ambient air is as clean and cool as possible.

Routine Maintenance Procedures

Routine maintenance prevents expensive repairs and unscheduled downtime. Have your facility’s vacuum pump checked for oil and air leaks, dirty filters, loose connections, and degrading cooling systems. Cleaning all internal parts and replacing worn components also help optimize the equipment’s efficiency and performance.

Troubleshooting Common Issues

When installing the rotary screw vacuum pump, put it on a stable foundation, aligned with the connected system. It is also important to ensure enough space around the machine for maintenance and repairs when necessary.

Rotary Screw Vacuum Pumps from Buykaeser

Buykaeser offers a variety of efficient rotary screw vacuum pumps as well as 24/7 service, rentals, and installation. Our rotary screw vacuum pumps have a SIGMA profile air end specifically engineered for vacuum applications, including but not limited to vacuum forming, CNC router tables, packaging, thermoforming, degassing, drying, tube and bottle filling, and filtration. We offer a variety of models to choose from depending on your needs:

Contact Buykaeser to learn more about our rotary screw vacuum pumps. Request a quote for specific pricing details.

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