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SIGMA KNEADER
consist of double "U" shaped
container made of either Mild Steel or Stainless
Steel 304 or 316 with jacket of Carbon Steel covering
two side for heating or cooling application &
dust free cover to accomplish vacuum if desired
or normal cover.
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The mixing elements
are two nos. Z type steel casted blades..
They contra rotate inward fitted at close
or specified clearance with the container
to give thorough and uniform mixing. There
is a gland pusher of gun metal bush which
ensure minimal friction and extend the life
of mixing elements (Blades). Two counter rotating
mixing arms rotate at different speeds (usually
in the ratio of 3 to 2) in the trough, the
intersection of which forms a saddle and the
arms meet tangentially just above the saddle.
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The mixing action is a combination
of bulk movement, shearing, stretching, folding,
dividing, and recombining as the material
is pulled and squeezed against blades, saddle,
and side walls. Continually new layers of material
are compressed and folded over one another and
are subjected to shearing forces. New surfaces
are formed and the components can penetrate. The
blades, which are ground and polished, successively
sweep all points of the trough surface during
each revolution, at the same time dividing the
batch continuously across the saddle piece and
thereby achieving a perfect mix.
"DUPLEX"
Kneader
Duplex kneaders are twin basin
kneaders with two horizontally arranged kneading
blades, which are deeply geared into one another
and strip themselves reciprocally. The kneading
blades are turning to a ratio of 1:2. Because
of their different speeds, the blade sides approach
and withdraw alternately.
This causes high pressure tensile
and shearing rates and therefore heavy friction
in the kneading medium, which creates excellent
dispersing and homogeneity. The shape of the kneading
blades enables a steady flow of material from
the side walls of the kneading trough to the middle
of the trough.
Apart from the sigma blades,
we also offer sigma disperser blades
Different types of Sigma Blade
Available
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Sigma- or Z-form blade
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Two wing blade
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Double naben
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