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Difference between revisions of "Conical Screw Dryers"
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[[File:Conical_Screw_Dryers.jpg|thumb|right|200px|Conical Screw Dryers]] | [[File:Conical_Screw_Dryers.jpg|thumb|right|200px|Conical Screw Dryers]] | ||
The '''Conical Screw Dryers''' are used for drying powders, granules and removing solvent from the product. | The '''Conical Screw Dryers''' are used for drying powders, granules and removing solvent from the product. | ||
==='''Description'''=== | ==='''Description'''=== | ||
The conical screw dryer is a vacuum contact dryer that is particularly suitable for drying hazardous and toxic products containing solvents or water, to a very low final moisture content, due to its closed design and indirect product heating.As a result of its unique, very gentle mixing characteristics, even mechanically sensitive products are not destroyed; the product quality after the drying process is reproducible and as good as that of the initial product, whereas the driving force required is very low. The achievable, high vacuum ensures low drying temperatures (a clear advantage when drying temperature-sensitive products), good heat transfer and short drying times, while at the same time requiring little energy. The short drying times and the high level of the fully closed system make the conical dryer the best choice in cases in which environmental and/or product requirements are strict. A directly fitted filter retains the dust particles in the processing space. Complete discharge and easy output ensure that you can continue to process your valuable products without a loss. Not just the solids, but also humidity and solvents can be recycled by the vacuum unit that has been integrated into the closed containment system. | The conical screw dryer is a vacuum contact dryer that is particularly suitable for drying hazardous and toxic products containing solvents or water, to a very low final moisture content, due to its closed design and indirect product heating.As a result of its unique, very gentle mixing characteristics, even mechanically sensitive products are not destroyed; the product quality after the drying process is reproducible and as good as that of the initial product, whereas the driving force required is very low. The achievable, high vacuum ensures low drying temperatures (a clear advantage when drying temperature-sensitive products), good heat transfer and short drying times, while at the same time requiring little energy. The short drying times and the high level of the fully closed system make the conical dryer the best choice in cases in which environmental and/or product requirements are strict. A directly fitted filter retains the dust particles in the processing space. Complete discharge and easy output ensure that you can continue to process your valuable products without a loss. Not just the solids, but also humidity and solvents can be recycled by the vacuum unit that has been integrated into the closed containment system. | ||
==='''Characteristics'''=== | ==='''Characteristics'''=== | ||
* A conical container with a domed roof, an external drive unit and an internal mixing screw, guided by an orbital swivel arm. The head room is used to expand the vapours and to settle the dust. | * A conical container with a domed roof, an external drive unit and an internal mixing screw, guided by an orbital swivel arm. The head room is used to expand the vapours and to settle the dust. | ||
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* Modular drive system, exchangeability of various equivalent systems. | * Modular drive system, exchangeability of various equivalent systems. | ||
* Spherical segment valve as a closed output and input valve with an inflatable sanitary seal that is easy to clean. No dead space, with CIP nozzle | * Spherical segment valve as a closed output and input valve with an inflatable sanitary seal that is easy to clean. No dead space, with CIP nozzle | ||
==='''Advantages'''=== | ==='''Advantages'''=== | ||
The conical screw dryer includes all the advantages mentioned for the conical screw mixer, without limitations: | The conical screw dryer includes all the advantages mentioned for the conical screw mixer, without limitations: | ||