PerMix Vacuum Ribbon Mixers Dryers

How Do PerMix Vacuum Ribbon Mixers Dryers Work?

How PerMix Vacuum Ribbon Mixers Work – Horizontal & Vertical Designs Explained

PerMix Vacuum Ribbon Mixers are available in both horizontal and vertical configurations, each engineered for efficient, gentle mixing and rapid drying under vacuum. Whether horizontal or vertical, both designs utilize helical ribbon agitators and vacuum-sealed chambers to enable precise blending and low-temperature drying in a single operation.

Horizontal Vacuum Ribbon Mixers – Uniform Mixing & Fast Drying

In a horizontal vacuum ribbon mixer, a U-shaped trough houses a double helical ribbon agitator that rotates on a horizontal axis. The outer ribbon moves materials in one direction while the inner ribbon moves them in the opposite direction, creating a countercurrent flow that ensures fast, thorough mixing across the entire batch.

Once mixing is complete, vacuum is applied to the sealed chamber. Because the boiling point of liquids drops under vacuum, moisture evaporates at a much lower temperature, preserving sensitive materials while achieving efficient drying. The heated jacket surrounding the trough enhances heat transfer, speeding up drying time.

Horizontal Vacuum Ribbon Mixer Highlights:

• Fast batch cycles with efficient axial and radial mixing

• Ideal for free-flowing powders and granular materials

• Hinged or removable covers for easy cleaning and access

• Center or end discharge options for fast product release

Vertical Vacuum Ribbon Mixers – Compact Footprint & Gentle Processing

Vertical vacuum ribbon mixers use a vertical cylindrical vessel with a centrally mounted helical ribbon agitator that moves product upward along the wall and downward through the center. This vertical flow pattern ensures even mixing with less space required on the production floor.

Vacuum is applied to the sealed chamber, and a heating/cooling jacket around the vessel provides precise temperature control. This configuration is especially beneficial for smaller batch sizes, delicate powders, and applications with limited floor space.

Vertical Vacuum Ribbon Mixer Highlights:

• Gentle mixing with high surface area exposure for faster drying

• Gravity-assisted discharge for minimal product retention

• Smaller footprint—perfect for cleanrooms and tight spaces

• Easy access for cleaning and inspection

Common Operating Steps:

1. Loading – Ingredients are loaded manually or via vacuum into the mixer.

2. Mixing – The ribbon agitators rotate to create a uniform blend.

3. Vacuum Application – Air is evacuated from the chamber, lowering the boiling point of moisture.

4. Heating & Drying – Heated jackets accelerate moisture removal under vacuum.

5. Cooling (if needed) – Product can be cooled using chilled water or glycol in the same jacket.

6. Discharge – Product is released through a valve, ready for downstream processing or packaging.

Why Vacuum Ribbon Mixers?

• Combine mixing and drying into one streamlined process

• Reduce processing time, energy use, and footprint

• Preserve product integrity by avoiding high heat

• Ensure homogeneity even with minor additives or trace ingredients

Key components

• Mixing Chamer

  The enclosed space where materials are mixed and dried, designed for optimal material handling.

• Agitator Shaft

  Equipped with helical ribbons that move materials for uniform mixing and drying.

• Vacuum System

  Creates a controlled environment to reduce moisture content and prevent contamination.

• Inlet/Outlet Ports

  Allow for efficient loading and unloading of materials.