represents a business enterprise with strong commitment, foresight,
technical expertise and on-time delivery. Our promoters have spent
more than 3 decades in the pharmaceutical industry, which had helped
Vilas Engineering carve an edge in this competitive pharma / biotech
industry. We have successfully manufactured and supplied Sigma
Mixers for various pharmaceutical companies.
VILAS' Sigma Mixer is used for mixing highly
viscous materials in various industries viz. Adhesives, Chemical,
Confectionery, Carbon Black, Ceramic, Dyes & Pigments, Food
Products, Grease, Lead Storage Battery, Paint, Putties, Plastic,
Pharmaceuticals, Printing ink, Resin, Rubber, Soap & Detergent
Sigma Mixer consists of two counter-rotating blades
in two semi-cylinders, the intersection of which forms a saddle
piece and meeting tangentially just above the saddle the blades
are driven by gearing at both ends. The mixing action is a combination
of bulk movement, smearing, stretching, folding against the blades
and sidewalls. The blades, which are ground and polished, successively
sweep all portion of the trough surface during each revolution.
of Blades -
1. Sigma Blade - Sigma blade is capable of starting
and operating with either liquids or solids or a combination of
both. Sigma Blades give shredding or wiping effect. It has good
mixing action, readily discharges materials which do not stick to
the blades and is relatively easy to clean when sticky materials
are being processed.
2. Double Naben - In specific applications a lump
bridge across the two sigma blades is formed. To avoid the formation
Naben blades are used.
Features of Sigma Mixer -
1. Tilting tank. For small machines Tilting
is mechanical type (hand-lever or hand-wheel). For bigger machines
Tilting is electromechanical or hydraulic.
2. Extrusion screw. The extrusion-discharge
screw is situated at the centre of the bottom part of the saddle
under two sigma blades. During the mixing the screw pushes the
material towards the sigma blades ensuring uniform mixing. At
discharge time, the direction of rotation of the screw is reversed
and the mixed material is extruded out of the machine. Separate
drive is provided for this Screw.
BLADE - Hollow blades to enable internal cooling or
Design, Cover Design is optional
for HEATING or COOLING (Jacket) as per process requirements
- 25 Ltr. to 2500 Ltr.
of SS 316, SS 304 and carbon steel
VILAS ENGINEERING WORKS
Unit no. 4, Shreenath Industrial Estate, Mahakali Caves Road,
Andheri (E), Mumbai, INDIA 400093
V Cone Mixer
/ Heat Exchanger
Fluid Bed Dryer
Plant with Inline Homogenizer