Friday, January 3, 2014

Lobe Pumps - Working Principle And Applications

Lobe pumps are very useful pumps, as they are the right solution for any kind of pumping process. Regardless of the application or what are you pumping, how small or small the flow might be, lobe pumps can help you do your pumping job with ease in the most efficient way. Lobe pumps are able to handle solids, pastes, slurries and various liquids. If wet, lobe pumps offer a superb self-priming performance, a performance which minimized product degradation.

Lobe pumps offer irregular and continuous reversible flows and it can operate dry for a short period of time, but only if flushed seals are used. The flow is independent of changes in the pressure process, so the output is constant and continuous. There are special models available for highly abrasive liquids, shear sensitive liquids or aggressive chemicals.



Lobe pumps characterize with highest efficiency, reliability, superb hygienic qualities and great corrosion resistance. The working principle of lobe pumps have over 50 years of experience and with the years passing by, they became very easy to maintain. To meet every need and to serve the broadest applications, there are a few types of lobe pumps, each with specific user benefits.

Working Principle
The working principle of the lobe pumps is achieved by the counter rotation of two pumping elements called rotors within a rotor case. Those pumping elements are located on shafts, which are mounted within an external gearbox and supported by bearings (which are also located on the shafts).

The timing gears transmit the energy to the driven shaft and also synchronize the rotors on a way that they will rotate without making any contact with each other. As the pumping elements pass the port, the achieved cavity increases, decreasing the pressure, which induces the pumped medium to flow into the rotor case.

Applications

Lobe pumps find their use in a variety of applications in various industries. As they are known for superb hygiene qualities, reliability, corrosion resistance, easy maintenance and high efficient, they are most commonly used in food related industries. For example, lobe pumps are used in the chemical industry for continuous conveyance of almost any substance (acids, solvents, resins, solvents, adhesives, detergents, paints, etc.) while dosing in proportion to rotation speed. Other industries that use lobe pumps are: pharmaceutical industry (mixing perfumes or similar additives, drying fatty acid, blending, recovery, soap and detergent) and sugar industry (glucose, treacle, molasses, liquids sugar, magma, sugar syrup).

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