Types and Features of Liquid Ring Vacuum Pumps

 Liquid ring vacuum pumps are essential equipment in various industries due to their unique design and operational benefits. This article provides an in-depth look at the different types of liquid ring vacuum pumps and their specific characteristics. Understanding these distinctions can help in selecting the most suitable pump for various industrial applications.

 

Types of Liquid Ring Vacuum Pumps

1. Single-Stage Single-Acting Liquid Ring Pump

   • Description: This type features a single impeller where suction and exhaust occur once per impeller revolution.
   • Characteristics: It provides higher vacuum levels but has lower pumping speed and efficiency.

2. Single-Stage Double-Acting Liquid Ring Pump

   • Description: Equipped with a single impeller, this pump performs suction and exhaust twice per impeller revolution.
   • Characteristics: Compared to single-acting pumps, it significantly reduces size and weight for the same pumping speed. The symmetrical distribution of the working chamber on both sides of the impeller improves load distribution on the rotor, resulting in higher pumping speeds and efficiency but slightly lower vacuum levels.

3. Two-Stage Liquid Ring Pump

   • Description: Typically, two single-stage single-acting pumps are connected in series, sharing a common shaft.
   • Characteristics: These pumps maintain high pumping speeds even at higher vacuum levels and provide stable operation.

4. Atmospheric Liquid Ring Pump

   • Description: This setup involves a combination of an atmospheric ejector and a liquid ring pump.
   • Characteristics: The atmospheric pump in front of the liquid ring pump enhances vacuum levels, expanding the pump's operational range.

Advantages of Liquid Ring Vacuum Pumps

1. Simple Structure

   • Benefit: Easy to manufacture with low precision requirements, making it simple to operate and maintain.

2. Compact Design

   • Benefit: Usually directly coupled with the motor, they have high rotational speeds, allowing for high exhaust volumes with relatively small structural dimensions.

3. Minimal Internal Friction

   • Benefit: No metal friction surfaces within the pump chamber eliminate the need for internal lubrication, with water serving as the sealant.

4. Isothermal Compression

   • Benefit: The temperature changes during gas compression are minimal, making them suitable for handling flammable and explosive gases.

5. Versatility

   • Benefit: Absence of exhaust valves and friction surfaces allows for the pumping of dusty gases, condensable vapors, and gas-water mixtures.

Due to these advantages, liquid ring vacuum pumps are widely used in various industries. They are particularly suitable for handling flammable, explosive, and corrosive gases, as well as gases containing dust and moisture, thanks to their isothermal compression and water-sealing capabilities.

Liquid ring vacuum pumps stand out for their ability to handle challenging gases and their robustness in demanding industrial environments. Their simple, compact design, combined with isothermal compression, makes them a reliable choice for various applications.

Contact us  

For more information about the Liquid ring vacuum pumps and how they can benefit your operations, contact us at contact@nuoxutech.com or visit our website www.nuoxutech.com .You can also reach us on WhatsApp at +86 13849062209.Our team is ready to provide you with professional service and support.

Keywords

Liquid Ring Vacuum Pump, single-stage pump, double-acting pump, two-stage pump, atmospheric pump, vacuum technology, industrial vacuum solutions