TCM Double-Stage Cone-Type Liquid Ring Vacuum Pump

High Efficiency • Zero Cavitation • Stable Operation

The TCM Series Double-Stage Cone-Type Liquid Ring Vacuum Pump from VOLM is engineered to deliver high performance, operational stability, and cavitation-free operation. Unlike traditional flat-disc liquid ring pumps such as 2BE or 2BV, the cone-type structure offers significant advantages in flow behavior, mechanical balance, and hydraulic efficiency.

A primary structural difference lies in the arrangement of the suction and discharge ports:

• Flat-disc pumps: Suction and discharge ports are located on the end face (top inlet, top discharge).    

•  Cone-type pumps: The suction port is positioned on the upper section of the cone, while the discharge port is located laterally (top inlet, side discharge).   

This structural layout forms a smoother internal flow path, reduces flow resistance, and enhances energy efficiency.

Key Technical Advantages

1. High Efficiency Through Optimized Flow Geometry

The cone extends deeply into the impeller chamber, creating a straight and unobstructed flow passage.

Together with large radial suction and discharge openings, the design minimizes hydraulic losses and provides:

• Higher volumetric efficiency

• Reduced energy consumption

• Improved performance in continuous-duty applications

2. Simplified Structure and High Operational Stability

Although designed as a double-stage pump, the TCM series achieves two-stage compression using a single impeller. This results in a simplified mechanical structure, reduced maintenance requirements, and improved reliability.

The symmetrical dual-stage eccentric design balances radial forces, enabling:

• Low vibration

• Reduced noise

• Extended service life

This makes the pump suitable for long-term industrial operation under demanding conditions.

3. Zero Cavitation With Patented Cone Design

The proprietary cone design prevents vapor bubbles from accumulating on metal surfaces.

Bubbles are discharged before collapsing, which effectively eliminates cavitation and protects internal components.

Benefits include:

•  No cavitation erosion

•  Sustained performance stability

•  Longer equipment lifespan

Application Scenarios

 The TCM Double-Stage Cone-Type Liquid Ring Vacuum Pump is recommended for operating conditions where traditional liquid ring pumps exhibit:

• Cavitation

• Low efficiency

• Unstable operation

• Excessive vibration or noise

It is suitable for chemical processing, petrochemical plants, pharmaceuticals, environmental engineering, and other applications requiring high stability and efficient vacuum generation.

Enhance System Performance With VOLM TCM Series

The TCM series is developed based on advanced hydraulic design principles and long-term industrial application experience. It provides a reliable and energy-efficient solution for vacuum processes that demand continuous, stable, and cavitation-free operation.