How It Works
Vacuum tumble drying of materials is accomplished by heating the walls of a specially jacketed slow rotating vessel while applying vacuum. The vacuum lowers the boiling point of the component, while constant particle contact with the vessel walls provides fast heat input for quick, uniform drying action. The closed tumble vessel provides constant motion in a controlled atmosphere. This prevents lumping, segregation and active ingredient migration.The simple concept of applying heat and vacuum forms the basis of Gemco’s full line of Tumble Dryers, Blenders and Formulators. All are available in V-Shape, D/3 Double Cone and Slant Cone designs.

Slant Cone
The asymmetrical geometry of the Gemco Slant Cone design offers a very fast dry time. High particle mobility, plus the intermeshing action of materials results in dry times up to 33 percent less than other designs. In addition, this concept achieves more control and more precise end product with dry variation as low as ½ percent.

V-Shape
Gemco V-shape dryers are very popular in a wide variety of industries. They offer both short drying times…and efficient drying. Drying is achieved by the constant, dividing and intermeshing particle movement provided by two connected cylinders. This precise mixing action results in dry variations of 1-2%. Each cylindrical leg has an access cover for easy material loading and cleaning. The V, as all tumble dryers, requires low maintenance and consumes little horsepower.

Double Cone
The unique design of the Gemco D/3 Double Cone Dryer results in a high degree of particle mobility without the use of internal baffles. This type of dryer has a low profile, requiring less head-room than a V-dryer. One access cover means easier cleaning and inspection. Invented by Gemco in 1935, the Double Cone is a proven performer in a wide variety of industries, offering greater overall volume and high efficiency with dry variations 1-2%.