Flameproof Stirrer Drives

Flameproof Stirrer Drives

Flameproof Stirrer Drives are specially engineered agitation drive units designed for operation in hazardous and explosive environments where flammable vapours, gases, or solvents may be present. These drives are built with flameproof motor enclosures that prevent internal ignition from propagating to the surrounding atmosphere, ensuring maximum operational safety.

They are widely used with glass reactors, agitated vessels, and process equipment in industries requiring strict safety compliance and reliable continuous mixing.

Construction & Safety Design

• Flameproof electric motor with certified enclosure
• Robust gear reducer for high torque transmission
• Heavy-duty housing in cast aluminium / cast iron / stainless steel
• Precision-machined output shaft for accurate alignment
• Sealed cable entries with flameproof glands
• Designed to withstand internal explosions without external flame release

Key Features & Advantages

• Explosion containment construction
• High torque at low RPM
• Stable speed control
• Safe operation in hazardous zones
• Long service life under continuous duty
• Low vibration and noise levels
• Compatibility with mechanical and bellow seals

Operational Capabilities

• Variable speed operation using VFD
• Smooth startup and shutdown
• Reliable mixing of low to medium viscosity liquids
• Consistent performance in solvent-rich processes

Technical Specifications

Parameter	Specification
Drive Type	Flameproof electric motor with gearbox
Motor Certification	Flameproof (Ex type)
Speed Range	Variable, typically 10–300 RPM
Power Rating	0.25 HP to 5 HP
Torque Output	High torque suitable for agitation
Mounting Orientation	Vertical, top-mounted
Housing Material	Cast aluminium / cast iron / SS 304 / SS 316
Protection Class	IP55 / IP65
Speed Control	VFD compatible
Seal Compatibility	Mechanical seal / bellow seal
Duty Class	Continuous
Operating Environment	Hazardous / flammable zones

Safety & Compliance

• Designed for hazardous area operation
• Suitable for flammable solvents and vapours
• Spark-free external operation
• Can be supplied with certified flameproof motors as per project requirement
• Compatible with plant safety protocols

Integration & Compatibility

• Glass reactors and agitated vessels
• SS and PTFE-lined stirrer shafts
• Propeller, turbine, blade, and paddle stirrers
• Mechanical seal stirring assemblies
• Bellow seal drive systems

Typical Applications

• Chemical processing plants
• Pharmaceutical solvent reactions
• Petrochemical pilot units
• Resin, paint, and coating industries
• Solvent recovery and distillation systems

Selection Considerations

Selection of a flameproof stirrer drive depends on:

• Zone classification
• Solvent type
• Reactor volume
• Process viscosity
• Required RPM and torque
• Seal arrangement

Optional Features & Accessories

• Digital RPM display
• Torque limiter
• Remote-mounted control panel
• Anti-vibration mounting pads
• SS mounting frames