Sri Sai Nebula Engineering

A Top Entry Agitator is a vertical mixing system mounted on the top of a tank or vessel, with the drive unit (motor and gearbox) positioned above the tank and the impeller shaft extending downward into the liquid. It is one of the most commonly used agitation systems in chemical, pharmaceutical, food, fertilizer, and wastewater industries.

• Electric Motor – Provides rotational power

• Gearbox / Speed Reducer – Adjusts torque and RPM as required

• Rigid Coupling – Connects motor to shaft

• Agitator Shaft – Vertical shaft transmitting rotation

• Impeller – Mixing element (propeller, turbine, pitched blade, anchor, etc.)

• Mechanical Seal / Gland Packing – Prevents leakage at the tank top

• Mounting Flange / Base Plate – Secures agitator to tank

Working Principle

The motor rotates the shaft, which drives the impeller inside the tank. The impeller creates:

• Axial Flow – Top-to-bottom circulation

• Radial Flow – Side-to-side mixing

• Turbulence – Enhances blending, dissolution, or suspension

This ensures uniform mixing, solid suspension, gas dispersion, or heat transfer depending on process requirements.

Applications

• Chemical blending

• Dissolution of powders

• Slurry preparation

• Effluent treatment tanks

• Fertilizer and feed mixing

• Pharmaceutical processing

Advantages

• Suitable for large-capacity tanks

• High mixing efficiency

• Can handle high viscosity fluids (with proper impeller selection)

• Easy maintenance from top access

• Customizable for speed, torque, and sealing type

Typical Specifications (Example)

• Tank capacity: 500 Litres to 100 KL and above

• Speed: 20 – 1500 RPM

• Power: 0.5 HP to 100 HP

• MOC: SS304, SS316, MS, Rubber Lined, etc.

If you need, I can also provide a technical brochure-style description suitable for your company profile or quotation document.

Industrial Stirrer is used in the chemical industry, chemical plants, etc, for the Mixing Premixing, Dispersing, Homogenizing, Shade matching, Homogenizing and Shearing of the solution.