Agitator Impellers
Paddle, propeller, turbine, anchor, rushton turbine, gate, disperser, helical ribbon and hydrofoil impellers for industrial mixing duties.
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Bottom Entry Agitator
Introduction: Bottom Entry Agitator
Bottom entry agitators are selected where overhead space is limited, where the process requires a compact vessel top, or where bottom-mounted mixing improves installation access. Premix Technologies engineers these units with careful attention to sealing, shaft support and impeller selection.
Key Features
- Compact bottom-mounted configuration
- Useful for low-level mixing and fast batch turnover
- Mechanical seal, gland or application-specific sealing options
- Suitable for sanitary, chemical and process tank duties
Typical Applications
Bottom entry agitators are used in preparation vessels, storage tanks, hygienic tanks, process reactors and systems where top-mounted drives are not preferred.
Technical Configuration
| Parameter | Available Options |
| Mounting | Application-specific tank or vessel mounting arrangement |
| MOC | MS, SS304, SS316, PP, PVDF, rubber lined, FRP lined or special metallurgy |
| Drive | Motor, gearbox, VFD and speed selection based on process duty |
| Impeller | Selected as per viscosity, flow pattern, tank geometry and mixing objective |
CFD Assisted Agitator Engineering Review
Computational Fluid Dynamics (CFD) is used as an engineering support method to understand liquid circulation, velocity distribution, turbulence, vortex tendency and possible dead zones before finalizing agitator configuration. This helps our team match impeller type, RPM, shaft position, baffle arrangement and motor power with the actual process requirement.
For industrial agitators, CFD review is useful for blending, solid suspension, heat transfer, gas dispersion, slurry handling, fermentation and high-viscosity mixing duties. It gives customers a clearer view of how the mixer will perform inside the vessel, especially where tank geometry, viscosity, solids loading or batch quality is critical.
Engineering Points We Review
- Flow pattern, circulation path and tank turnover
- Dead zones near the wall, bottom dish and process nozzles
- Impeller tip speed, shear level and velocity profile
- Baffle requirement to reduce vortex and improve mixing
- Power draw, torque and gearbox loading for reliable operation
- Scale-up behavior from pilot trials to production vessels
Customer Benefits
- Better agitator selection for the real process duty
- Improved mixing uniformity and batch consistency
- Reduced risk of sedimentation, floating layers and unmixed pockets
- More confidence in motor, shaft, impeller and seal selection
- Useful technical support for new tanks and retrofit applications
CFD flow visualization used for agitator selection, impeller performance review and mixing improvement.
