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Pilot Scale Batch Mixers

Pilot Scale Batch Mixers

This series of mixers are designed for small scale production in pilot plants, research institutions, hospital pharmacies, etc. Light and easily operated, AX series models have a capacity of up to 50 litres.

The Silverson multifunctional AX5 laboratory mixer features a range of instrumentation invaluable where process validation and reproducibility is required and provides an accurate and easy means of forecasting the performance of larger Silverson machines under full-scale working conditions.

The AX5 is suitable for the widest range of applications - mixing, emulsifying homogenising, disintegrating, dissolving - with an efficiency and flexibility unmatched by other machines.

Features:

  • Powerful 1HP (0.75 kW) motor
  • Touch pad controls
  • Electric rise & fall bench stand
  • Variable speed. Nominal maximum speed 6000 rpm
  • Compatible with the DataLogger system
  • Nominal capacity of up to 50 litres

How It Works

The advantages of Silverson’s high shear rotor/stator batch mixer over simple conventional stirrers or agitators stem from the multistage mixing/shearing action as materials are drawn through the specially designed Silverson workhead - the heart of every machine.

Pilot Scale Batch Mixers
Stage 1

The high-speed rotation of the rotor blades within the precision-machined mixing workhead exerts a powerful suction, drawing liquid and solid materials upwards from the bottom of the vessel and into the centre of the workhead.

Pilot Scale Batch Mixers
Stage 2

Centrifugal force then drives materials towards the periphery of the workhead where they are subjected to a milling action in the precision-machined clearance between the ends of the rotor blades and the inner wall of the stator.

Pilot Scale Batch Mixers
Stage 3

This is followed by intense hydraulic shear as the materials are forced, at high velocity, out through the perforations in the stator and circulated into the main body of the mix.

Pilot Scale Batch Mixers
Stage 4

The materials expelled from the head are projected radially at high speed towards the sides of the mixing vessel. At the same time, fresh material is continually drawn into the workhead maintaining the mixing cycle. The effect of the horizontal (radial) expulsion and suction into the head is to set up a circulation pattern that minimises aeration caused by the disturbance of the liquid’s surface.


Product Videos

Laboratory Mixers – small scale
Interchangeable Workheads

Workheads

A comprehensive range of workheads and screens is available for all Silverson high shear mixers. These easily interchangeable workheads offer great versatility by allowing any machine to be adapted to perform a wide range of mixing operations including emulsifying, homogenising, disintegrating, dissolving, dispersing, blending, particle size reduction and de-agglomerating. Changing from one head or screen to another is quick and simple.

Technical Information

Capacity
AX Series models have a capacity of up to 50 litres.
Motor
750W (1hp) 220 volt, single phase (110 volt optional), 50/60 Hz. Nominal maximum speed 6000 rpm.
Speed Control
Infinitely variable electronic speed control with integral on/off switch. The unit features a “speedlock” function designed to maintain the required speed as product viscosity rises or falls during operation.
Stand
Robust “H Frame” stand for floor or bench top use with integral raise and lower mechanism controlled from the touch pad on the motor unit.
Construction
Finished in a tough, easy to clean non-chip white nylon coating. All wetted parts in 316L stainless steel except the bush which may be bronze alloy or PTFE.
Assemblies
Compatible with the Duplex and Ultramix mixing assemblies.

Pilot Scale Batch Mixers
Model A B C D E F
AX5 1097 413 337 490 357 60

All dimensions shown are in millimetres. The dimensions shown are approximate only and certified diagrams should be used for installation purposes. Silverson reserves the right to change dimensions and specifications without notice.

Mixer Options

AX Model AX5 - UK
Model AX5

The AX5 features touch pad controls and is compatible with Silverson’s “DataLogger” system.

AX Model AX3 - UK
Model AX3

The model AX3 features a fixed speed 0.25kW (0.33hp), 3 phase, IP55/Hoseproof, TEFV or ATEX approved Flameproof industrial motor. Variable speed available via an inverter as an optional extra.

More powerful motors allowing a maximum speed of up to 6000 rpm are also available.

AX Model AX/Air - UK
Model AX/Air

The model AX/Air is powered by an intrinsically safe compressed air motor suitable for use in Atex Zoned/Explosion Hazard areas.

AX Ultramix Mixing Assembly - UK
Ultramix Mixing Assembly

The Ultramix assembly allows the user to replicate the mixing characteristics of production scale Ultramix units on a pilot scale. It is ideal for narrow necked containers and provides excellent product circulation, allowing the AX model to mix volumes of up to 50 litres (depending on product viscosity).

AX Duplex Mixing Assembly - UK
Duplex Mixing Assembly

This converts the AX series into a small-scale version of the Duplex, ideal for disintegration and solubilisation of solids, incorporation of powders and light products with a tendency to float, and for high viscosity mixes.

AX AX3 Electric Stand - UK
AX3 Electric Stand

An electric rise and fall stand is available as an alternative to the spring-loaded manual bench stand used for AX range mixers, allowing the mixer to be effortlessly raised and lowered.

AX AX3 D Stand - UK
AX3 D Stand

A mobile floor stand with hydraulic lift is available for AX3 mixers.

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