Introduction: The Submersible Agitator Pump is an innovative, all-in-one solution designed to both mix and pump liquids with high concentrations of settling solids. It is engineered to solve the common problem of sludge and sediment accumulation at the bottom of sumps and tanks. By actively agitating the contents before and during pumping, the pump ensures a homogenous slurry, prevents clogging, and facilitates the complete evacuation of the pit. This dual-action design eliminates the need for a separate mixing system, saving on cost and complexity.
Operating Principle: The pump features a unique dual-impeller system on a single, extended motor shaft:
- External Agitator Impeller: Located at the very bottom of the pump, this secondary impeller is exposed to the sump. As the motor runs, it rotates and creates a powerful vortex. This turbulent flow breaks up and re-suspends any settled sludge, sediment, or solids from the pit floor, mixing them thoroughly into the liquid.
- Primary Non-Clog Impeller: Located above the agitator and inside the main pump casing, this is the primary pumping impeller. It draws in the freshly mixed, solids-laden slurry and powerfully discharges it from the system.
This simultaneous mixing and pumping action is “automatic” and ensures that the pump is handling a consistent, flowable liquid rather than just skimming water off the top of a settled sludge bed.
Key Features & Benefits:
- Integrated Agitator for Solids Suspension: The powerful mixing action prevents the formation of a hard sludge layer, keeping solids suspended and ready for pumping.
- Complete Sump Evacuation: By liquefying the entire contents of the pit, the pump can remove virtually all solids and liquids, significantly reducing the need for expensive and hazardous manual cleanouts.
- Prevents Clogging: Ensures a smooth, homogenous slurry is fed to the main impeller, reducing the risk of clogging and improving overall operational reliability.
- Combined Pumping & Mixing: Acts as two machines in one, providing a cost-effective and energy-efficient alternative to installing separate pump and mixer units.
- Wear-Resistant Construction: The agitator and main impeller are often constructed from high-chrome iron or other hardened materials to withstand the highly abrasive nature of pumping slurries.
Common Applications:
- Municipal and industrial sewage lift stations prone to heavy sludge and grease buildup.
- Sludge holding tanks, digesters, and sedimentation tanks in wastewater treatment plants.
- Pumping of dense animal manure and slurry in agricultural pits.
- Industrial process sumps with settling solids (e.g., coal slurry, bentonite, lime slurries).
- Waste pits in tanneries, food processing plants, and paper mills.
