Sigma Mixer Design & Operation | JCT Machinery

◪Sigma Blades

The sigma mixer features two sigma-shaped blades that rotate on parallel axes but in opposite directions. These blades resemble the Greek letter "∑", hence the name.

◪Mixing Chamber

The mixing chamber, also called the trough or bowl, is typically a jacketed vessel. The jacket allows for temperature control during sigma mixer working.

◪Jacket for Heating or Cooling

The jacketed vessel enables the introduction of heating or cooling media to maintain the desired temperature during mixing.

◪Tilting Mechanism

◪Pressure and Vacuum Options

Some sigma mixers are equipped with options for applying pressure or vacuum conditions, which can be useful for specific processing requirements, such as degassing or handling reactive materials.

◪Mixing Action

The sigma blades rotate in opposite directions, effectively kneading and folding the material. This counter-rotating action provides intense mixing and kneading, ensuring thorough dispersion and uniform blending of the components.

◪Temperature Control

The jacketed vessel allows for the control of the mixing temperature. Heating or cooling media is circulated through the jacket to maintain the desired temperature throughout the sigma mixer working.

◪Variable Speed Control

The sigma mixer's variable speed control allows the operator to adjust the mixing speed according to the specific requirements of the materials. Different speeds can influence the intensity of mixing and the time required for the process.

◪Discharge

After the mixing process is complete, the sigma mixer's tilting mechanism is used to discharge the mixed material from the trough.

◪Cleaning

Cleaning the sigma mixer is an essential part of the operation. The tilting mechanism may assist in providing easy access for cleaning and maintenance.