Bottom Drive high shear mixer

 Bottom Drive high shear mixer

Wahal Engineers manufactured Bottom drive high shear mixer are designed in a manner to fit into the bottom or side of a mixing vessel. They are used to disperse immiscible liquids, and for the preparation of homogeneous slurries by mixing chips, powder and breaking of larger size polymer particles. These high shear mixers are typically used in conjunction with a slow speed stirrer or scraper unit for high viscosity products. All the larger particles are crushed to reduce their size into an optimal ratio to obtain the desired slurry. Its major application is for emulsification, blending, dissolution of solids into the liquids as desired by the application. They are also designed for the efficient and homogenous wet granulation of powders to form a medium to high density granule. The working head, i.e., the rotor/stator breaks down hard solids into fine particles. This type of mixer is ideal for high viscosity cosmetic, pharmaceutical and food products. Wahal Engineer’s bottom drive mixers is comprehensively used for a wide range of services, which includes product and process development, process scale up, calibration, maintenance program and pro active project management.

Working Principle:

1. The major working principle is the shear force produced between the high speed rotations of the rotor blades which exert a powerful suction. This suction draws the solid and liquid material into the centre of the stator head.

2. The centrifugal force produced then pumps the material out from the rotor head centrifugally towards the stator walls. Here they are milled between the clearance of the rotor and the stator.

3. Due to the minimum tolerance between the rotor and stator material is crushed subjected to the intense shear force produced and homogeneous product comes out forcefully from the stator. The crushed materials are projected radially outward towards the sides of the mixing vessel. Fresh material is further simultaneously drawn into the workhead to maintain the mixing cycle.

4. Since it’s a batch process the turbulence created in the mixing vessel disperses a homogenous mixture as an end product.

The system works on the basic Features:

•  Mixing, homogenization & emulsification.

•  Dissolving powder ingredient in liquid feed.

• Particle size reduction with uniform dispersion.

• Disintegration of enlarge particle cluster.

• Crushing of large size particle and size reduction.

• Disintegration of agglomerates

• Batch mixing homogenization & emulsification

• Create stable emulsion & suspension

Technical Specification:

Capacity 500 ml – 1000ml

Material of Construction Stainless Steel -304/S. S-316L, Hastelloy, SS 321 all wetted parts

Sealing Single or double mechanical Seal with self pumping Thermosyphon system, Gland Sealing

Compatibility Higher pressure up to 10 Bars and vacuum operation.

Rotor Head Four blade type rotor

Stator head wide range of stator

Heads Emulsion/Slotted/High Shear/Disintegrating/Square

 

Its Application includes:

• Pharmaceutical Industry :

• Ointment & creams

• Cough syrups

• Tablet Coatings

• Vaccines

• Cosmetic Industry :

• Carbopol Gels

• Lipsticks

• Toothpaste   

• Food Industry :

• Preparation of Mustards

• Manufacture of Mayonnaise

• Manufacture of Tomato sauces and ketchups.

• Preparation of Ginger Garlic paste.

 

Wahal Engineer’s bottom drive high shear mixer is the ideal solution for your wet granulation and to satisfy your mixing needs.