2SK Series Liquid Ring Vacuum Pump for Industrial Applications

The 2SK series liquid ring vacuum pump is designed for industrial processes that require reliable vacuum performance and different pumping capacities. With models ranging from 2SK-1.5 to 2SK-30, this series offers options for small and large vacuum systems.

These pumps can be considered for applications such as chemical evaporation, vacuum drying, industrial filtration, and gas extraction. Choosing the right model depends on the required pumping speed, operating pressure, gas properties, and working conditions.

1. Key Features of the 2SK Series Vacuum Pump

Multiple Models for Different Pumping Requirements

The 2SK series includes six main models: 2SK-1.5, 2SK-3, 2SK-6, 2SK-12, 2SK-20, and 2SK-30. Their listed maximum pumping speeds range from 1.5 to 30 m³/min, giving users several options for different production needs.

For example, the 2SK-12 has a listed maximum pumping speed of 12 m³/min and a motor power of 22 kW. The 2SK-30 offers a maximum pumping speed of 30 m³/min and a motor power of 55 kW, making it an option for applications that require a higher gas flow rate.

Actual pumping performance depends on the operating pressure and system conditions, so the performance curve should be checked before selecting a model.

How Does a Liquid Ring Vacuum Pump Work?

A liquid ring vacuum pump uses a rotating impeller and working liquid to create changing chambers inside the pump. As these chambers expand and contract, gas enters the pump, is compressed, and is discharged.

The working liquid helps seal the chambers and carries away part of the heat generated during compression. This operating principle makes liquid ring vacuum pumps suitable for certain processes involving moist gases and condensable vapors.

The choice of working liquid, its temperature, and the properties of the gas can affect pump performance. These factors should be considered during system design.

2. Common Industrial Applications

Chemical Evaporation and Concentration

In chemical production, vacuum is often used to lower the boiling temperature of liquids during evaporation and concentration. A properly selected 2SK vacuum pump can help maintain the vacuum required by the process.

For applications involving solvents, corrosive gases, or condensable vapors, the gas composition, material compatibility, and liquid handling requirements should be checked before choosing the equipment.

Vacuum Drying and Industrial Filtration

Vacuum drying is used in many manufacturing processes to remove moisture under reduced pressure. Liquid ring vacuum pumps may be suitable when their operating range matches the required drying conditions.

In industrial filtration and dewatering, vacuum helps create the pressure difference needed to separate liquids from solids. The appropriate pump size depends on the required airflow, working pressure, filtration cycle, and moisture content.

General Industrial Gas Extraction

The 2SK series can also be considered for other industrial vacuum systems that require continuous gas extraction. The final choice should be based on actual process requirements rather than maximum pumping speed alone.

3. Main Specifications and Model Selection

2SK Series Technical Data

The following table summarizes the main specifications provided for the series.

The supplied product data lists a limiting vacuum of approximately -0.098 MPa (-735 mmHg), while the table heading also refers to -0.093 MPa. Confirm the correct value and the applicable test conditions with the product documentation before publication or technical selection. Working-liquid flow rates should also be verified against the original model data.

How to Choose the Right Model

Before selecting a 2SK vacuum pump, consider these key factors:

Required pumping speed: Calculate the gas flow needed under actual operating conditions.

Operating pressure: Check the pump's performance at the required vacuum level.

Gas composition: Identify moisture, condensable vapors, solvents, or corrosive components.

Working-liquid conditions: Confirm the suitable liquid type, flow rate, and operating temperature.

Motor power and installation: Check the power supply, drive arrangement, available space, and equipment weight.

System accessories: Depending on the process, a gas-liquid separator, heat exchanger, and liquid circulation piping may be required.

Selecting a pump based on these factors helps ensure that the equipment matches the process instead of relying only on catalog maximum values.

4. Build a Vacuum System for Your Process

A complete industrial vacuum system may include the pump, motor, separator, heat exchanger, piping, and working-liquid circulation equipment. The exact configuration depends on the process, gas characteristics, cooling requirements, and installation conditions.

Greentech International (Zhangqiu) Co., Ltd. provides industrial vacuum equipment for different production requirements. To identify a suitable 2SK model, customers should prepare details such as the required pumping speed, operating pressure, gas composition, working temperature, and application.

Looking for a 2SK series liquid ring vacuum pump for your project? Contact Greentech with your operating conditions to discuss a suitable model and vacuum system configuration.

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