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Difference between revisions of "Conical Screw Mixers"
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[[Category:Mixing]]{{Knoppen}} | [[Category:Mixing]]{{Knoppen}} | ||
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[[File:Nauta-mixer.jpg|thumb|right| Nauta mixer]] | [[File:Nauta-mixer.jpg|thumb|right| Nauta mixer]] | ||
[[File:Nauta_mixing_principle.jpg|thumb|right| Nauta mixing principle]] | [[File:Nauta_mixing_principle.jpg|thumb|right| Nauta mixing principle]] | ||
'''Conical Screw Mixers''' (also called [[Nauta Mixers]]) make use of a conical chamber with a vertical screw that mixes the powder or substance. | '''Conical Screw Mixers''' (also called [[Nauta Mixers]]) make use of a conical chamber with a vertical screw that mixes the powder or substance. | ||
==Working principle== | ==Working principle== | ||
First step is charging of mixer from the top, manually or vide pneumatic or mechanical conveying. After the mixer is charged the mixing process starts. | First step is charging of mixer from the top, manually or vide pneumatic or mechanical conveying. After the mixer is charged the mixing process starts. | ||
The mixing is carried by means of 3 distinct intermixing actions: | The mixing is carried by means of 3 distinct intermixing actions: | ||
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The typical speed of the central screw is 70 to 80 Rpm. The Tip speed can fluctuate from 1 to 3 m/s. The result is most intimate intermingling of all ingredients. The mixing time is depending on product characteristics, mixing accuracy and batch size | The typical speed of the central screw is 70 to 80 Rpm. The Tip speed can fluctuate from 1 to 3 m/s. The result is most intimate intermingling of all ingredients. The mixing time is depending on product characteristics, mixing accuracy and batch size | ||
Example | |||
==Example== | |||
Conical Double Screws Mixer (also called [[Nauta Mixers]]) consists of driving part, screw agitator and reverse cone cylinder. The agitator are two asymmetrically helixes. They rotate around their own axes and revolve around the cone’s center axis at the same time with the help of the arm rotation effect. The material will be elevated repeated through the rotation and revolution of the helix and form shearing, convection and diffusing in the cone cylinder to realize perfect mixing effect. | Conical Double Screws Mixer (also called [[Nauta Mixers]]) consists of driving part, screw agitator and reverse cone cylinder. The agitator are two asymmetrically helixes. They rotate around their own axes and revolve around the cone’s center axis at the same time with the help of the arm rotation effect. The material will be elevated repeated through the rotation and revolution of the helix and form shearing, convection and diffusing in the cone cylinder to realize perfect mixing effect. | ||
==Applications== | ==Applications== | ||
Vertical ribbon blenders are generally used in case of applications that require gentle mixing action and minimal heat generation at the same time these mixers can also be used for applications that requires high shear mixing this is accomplished using lump breakers, which is driven separately. | Vertical ribbon blenders are generally used in case of applications that require gentle mixing action and minimal heat generation at the same time these mixers can also be used for applications that requires high shear mixing this is accomplished using lump breakers, which is driven separately. | ||