ROTARY BATCH MIXERS

Unique Principle of Operation

MUNSON® Rotary Batch Mixers feature a stationary inlet, an opposing stationary discharge, and a rotating drum in between. Material is charged via the inlet chute while the drum is rotating.

Internal mixing flights create a gentle, four-way mixing action that tumbles, folds, cuts and turns the material.

This provides free space between particles, and causes them to recombine 288 times per minute-without the free-fall that can damage material.

The efficient flow pattern also creates ideal conditions for spraying liquid coatings, flavors, colors and impregnations onto a large area of moving material, achieving batch uniformity rapidly.

When the blend is complete, typically from 1 to 3 minutes, the discharge gate pivots into the machine and directs the material flow down the discharge spout.

Four-way mixing action

Four-way mixing action — fold/tumble/cut/turn — achieves batch uniformity in 1 to 3 minutes.

Rotary Batch Mixers spray liquid additions onto a wide, deep bed of moving material

Unlike mixers that spray liquid additions onto a narrow "waterfall" of moving material with the hope it will transfer to dry material, MUNSON Rotary Batch Mixers spray liquid additions onto a wide, deep bed of moving material, rapidly achieving batch uniformity to one-tenth of one percent at ratios down to 1 part per million of liquid to solids.

Exterior view of plug gate discharge valve in open position.

Exterior view of plug gate discharge valve in open position.

Interior view of rotating stainless steel mixing drum showing plug gate discharge valve pivoted to the open position, and mixing flights that blend and elevate bulk material.

Interior view of rotating stainless steel mixing drum showing plug gate discharge valve pivoted to the open position, and mixing flights that blend and elevate bulk material.

Internal mixing flights

Internal mixing flights tumble, fold, cut and turn batch materials, while directing material toward the plug gate valve when closed, and through it when opened.

 

  1. The plug gate discharge valve body remains stationary at all times. During discharge, the valve plug pivots inward, allowing internal flights to direct material toward and through the valve opening — with no stratification — until the vessel is empty.
  2. Trunnion ring at discharge end eliminates the need for internal shafts and shaft seals contacting material.
  3. Mixing vessel rotates continuously during loading, mixing and unloading, cutting cycle times and preventing stratification during discharge.
  1. Large access door(s) provide unobstructed access to every interior surface for cleaning, ventilation and inspection.
  2. Optional retractable intake chute allows rapid cleaning and inspection. The chute remains stationary while the vessel rotates and material is loaded, cutting cycle times significantly.
  3. Trunnion ring at intake end eliminates the need for internal shafts and shaft seals contacting material.
  4. Low power motor due to slow rotation and extreme mixing efficiency.