This document discusses the V cone blender, also known as a twin shell blender. It is used for solid-solid mixing and is a batch-type tumbling mixer that can have blades. The document covers its principle of tumbling action, construction with shells and hatches, working by free fall mixing inside as it rotates, uses in pharmaceuticals and for fragile granules, advantages of easy loading and unloading, and concludes that it is commonly used in industry and laboratories.

1. V Cone Blender Or Twin Shell Blender
Safia Zariyat
University Of Science & Technology Chittagong
Department of Pharmacy

2. Content Outline
Introduction Principle Construction
Working
operation
Uses
Advantages
and
Disadvantage
Conclusion

3. Objectives
1)
• To know briefly about V cone blender .
2)
• To gain knowledge about the proper uses of
V cone blender in pharmaceutical industries.
3)
• To discuss best practices in mixing by V cone
blender

4. INTRODUCTION
 The unit operation that results in randomization of dissimilar
particles within a system is known as mixing and the machine or
device for mixing substances is called a mixer.
Ref:
1) Subrahmanyam C.V.S. , Setty J.T , Suresh.S, Devi V.K . Mixing. Pharmaceutical Engineering. Unit Operation 2. 2nd Ed. Delhi: Vallabh Prakashan; 2013.p.70-94.
2) Lachman L, Lieberman HA. , Kanig JL. Mixing. Theory and Practice Of Industrial Pharmacy. 2nd Ed. Philadelphia: Lea & Febiger; 1976.p.3-20.
V cone or
Twin Shell
Blender
Applicable for
solid - solid
mixing.
Batch type
tumbling
mixer Available as
both with or
without blade

5. Principle
Mechanism: Tumbling
action
Force: Shearing force if
blades are present.
Ordered mixing by
mechanical means
Key for mixing
efficiency: blender
speed
Ref:
1) Subrahmanyam C.V.S. , Setty J.T , Suresh.S, Devi V.K . Mixing. Pharmaceutical Engineering. Unit Operation 2. 2nd Ed. Delhi: Vallabh Prakashan;
2013.p.70-94.

6. Construction

7. Loaded 50-60%
of total volume
through shell
hatches.
Desired speed
or rpm is set
Rotation of
blender
Mixing occurs as
the material free
falls randomly
inside the vessel
Ordered
mixing by
mechanical
means
Collected
Through the
apex of
blender
Working Operation
Ref:
1) Subrahmanyam C.V.S. , Setty J.T , Suresh.S, Devi V.K . Mixing. Pharmaceutical Engineering. Unit Operation 2. 2nd Ed. Delhi: Vallabh Prakashan;
2013.p.70-94.

8. Advantages and Disadvantages

9. Uses Of Twin Shell Blender
Uses
1. Fragile granules can be
blended
2. Used in pharmaceutical,
cosmetics and chemical
industry
3. Dry powder blending

10. Uses Of V Cone Blender
Uses
Dry
powder
blending
Fragile
granules can
be blended
Pharmaceutica
l, chemical and
cosmetic
industry

11. Conclusion
The Twin shell or V cone
blender is very easy to
load and unload and so it
is commonly used in
both industry and
laboratory.

12. Thank You!