What is Immersible Pump

Immersible pumps are cost-effective, flood-proof pumps designed for dry environments. They are mounted in a vertical position with the motor above the fluid and the end of the pump extended below the fluid level. At the one of the immersible pumps is a float switch that turns the blower motor off to prevent water reaching the cooling fan when immersed. The opposite end is also enclosed with a fan, and the pump is encased with frames and a layer of grease to avoid water seeping into the motor.
The design of an immersible pump allows it to be used in any location where flooding may be present, such as in basements, under-building carparks, stairwells, etc). Immersible pumps are cost-effective for various flooding situations, but if the motor is intended to be submerged in water for a prolonged period of time, a submersible pump should be used instead. Immersible pumps are often easier to use, less expensive and easier to maintain. They can easily handle solids and liquids, allowing for a wide array of applications such as within storm water drains.
Application of Immersible Pump
Immersible pumps are largely used in municipal and industrial sectors. They are able to pump a wide variety of fluids and materials gently and with low pulsation. The materials of immersible pumps are often carefully chosen so that they can adapt to all difficult conditions to achieve the best results with regard to performance, energy efficiency and low life-cycle costs. Here are the main categories of the applications of immersible pumps:
Wastewater
Immersible pumps are ideal for wastewater collection, wastewater and sewage-sludge treatment, industrial wastewater, manure and ship wastewater.
Industrial Use
Immersible pumps are widely used in the manufacturing industry, such as paper, cellulose and chips, biomass, adhesives, paint, plastic granulates, solvents, sword and cooling lubricants, and brine.
Construction
In the aspect of construction, immersible pumps are used for dewatering and drainage, sewer rerouting, mine drainage, water intake and power, and flood protection.
Food
Immersible pumps are also used in the food industry, mainly in fruits and vegetables, live fish, brewery, molasses, oils and pastes, and gels.
Immersible Pump vs Submersible Pump
People are often obscured by these two types of pumps, assuming that they are the same by the names. But as a matter of fact they are not.
Submersible pumps are generally used for water and sewage pumping application. Their compact design and dimension with integral float switches make them ideal for home use as well. However, since they have standard carbon and ceramic mechanical seals and limited material options (typically cast iron or lower grade stainless steel), submersible pumps are incapable of submerging into anything other than water, they are unsuitable for aggressive liquids.
On the other hand, immersible pumps are designed and manufactured specifically for use in aggressive and corrosive fluids. To allow this, they are generally made in a range of materials from stainless steel up to engineered plastics, such as polypropylene and PVDF. Since the motor of an immersible pump is above liquid level, it can be supplied in a specialized environment. Column lengths up to six meters can be supplied and even with shorter lengths, provided that the impeller is flooded at start up the pump can still pump down to six meters.
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