Difference between revisions of "Nauta Mixers"

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[[Category:Mixing]]{{Knoppen}}
[[Category:Mixing]]{{Knoppen}}
<noinclude><!------------------------------------------------  
[[File:Nauta-mixer.jpg|thumb|right| Nauta mixer]]
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[[File:Nauta_mixing_principle.jpg|thumb|right| Nauta mixing principle]]
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'''Nauta Mixers''' (also called [[Conical  Screw Mixers]]) make use of a conical  chamber with a vertical screw that mixes the powder or substance.  
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==Working principle==
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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.                                                
[[Image: Nauta-mixer.jpg |thumb|200px|This conical mixer is a low intensity mixer specially designed for segregative, free flowing and  pasty products also applicable for cohesive products when using the intensifier.]]
The mixing is carried by means of 3 distinct intermixing actions:
Nauta-mixer.jpg
 
*The screw [[Agitators|agitator]], turning on its axis, produces a lifting action as it spirals the materials in an upward flow.  
*At  the same time, orbiting the tank, the screw removes material away from the wall and deflects it into the centre of the tank.
*Material lifted by the screw gravitates downward, thoroughly intermixing with material being spiraled upwards.
 
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==
Conical [[Double Shaft 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==
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.
 
*Mixing of free flowing powders
*Moistening of powders
*Coating
*Granulation
*Drying of powders
*Mixing of slurries

Latest revision as of 02:00, 19 May 2014

Nauta mixer
Nauta mixing principle

Nauta Mixers (also called Conical Screw Mixers) make use of a conical chamber with a vertical screw that mixes the powder or substance.


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. The mixing is carried by means of 3 distinct intermixing actions:

  • The screw agitator, turning on its axis, produces a lifting action as it spirals the materials in an upward flow.
  • At the same time, orbiting the tank, the screw removes material away from the wall and deflects it into the centre of the tank.
  • Material lifted by the screw gravitates downward, thoroughly intermixing with material being spiraled upwards.

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

Conical Double Shaft 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

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.

  • Mixing of free flowing powders
  • Moistening of powders
  • Coating
  • Granulation
  • Drying of powders
  • Mixing of slurries