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Rotary lobe pumps are used extensively in the following industries in place of progressive cavity pumps and centrifugal pumps. Rotary Lobe pumps have an advantage over progressive cavity pumps because of their small size, low cost maintenance-in-place capability and ability to run dry. They also have advantages over centrifugal pumps because of their ability to handle small diameter solids and abrasives, and ability to pump a measured flow at a constant pressure at any pump rpm with low shear with little or no pulsation. In addition, rotary lobe pumps are more energy efficient than centrifugal pumps. This is important since studies show that energy costs are typically 80-87% of total lifetime pump costs.
Pulp and Paper Industry
Used for pump clay slurry, paper coating TI02 pigment, bio-solids waste sludge, resins, soap scums, latex, and starch slurries. API 676 pumps are available if required as well as stainless steel wet end pumps.Sugar Industry
Thick juices, molasses, sugar syrups, waste sludge, and crystalline sugar syrup are all good applications because of LobePro's ability to handle high viscosity fluids, low shear, and low pulsation measured flow.Food Processing Industry
Our pumps are commonly used for pumping sludge in the waste stream to and from beltpresses and centrifuges because of their ability to pump thick, viscous and/or abrasive materials containing hard solids up to 1/8” (3 mm) with a metered, pulseless flow.Construction Dewatering
Rotary Lobe Pumps are ideal for wellpointing and sock. Wellpointing and sock require that the pump be able to self prime, often to 20 ft; be able to pump both air and water without cavitation damage; and be able to overcome air leaks because of a high air handling capability and still continue to prime. Rotary lobe pumps are now the dominate pump used for wellpointing and sock in the USA. Our sister company www.hollandpump.com has over 200 wellpoint/sock pumps in its rental fleet. They have put more than 1.5 million hours on these pumps with outstanding results.Environmental Remediation
Rotary lobe pumps are often used for recovering oily water with solids or corrosives because it is self priming, is low shear and can handle abrasives. Centrifugal pumps will thoroughly emulsify oil and water making their eventual separation for disposal more difficult and hence expensive. The pumps are well suited for pumping clean bentonite into slurry walls because the low shear and low speed results in less damageMining
Many mining processes require dewatering. Rotary lobe pumps are well suited for feeding dewatering devices because of their ability to pump a measured, near pulseless flow at any pressure within the pump’s PSI range . Additionally, mining applications are often abrasive. Pump wear rate is greatly effected by pump speed . Typically, rotary lobe pumps run at 200-300 rpm in abrasive applications whereas centrifugal pumps are typically run at 1750 rpms. This results in much faster wear for centrifugal pumps. Rotary lobe pumps deal well with soft , compressible solids. However if the slurry consistently contains hard solids greater than 1/8” we can specify one of three methods: in-line grinder, filter, or knock-out tank. We have a broad variety of materials available to custom engineer a pump best suited to your application.Agriculture
Rotary lobe pumps are used for pumping and spreading manure and farm chemicals, pumping and to and from anaerobic digesters. They can be driven by PTO’s, hydraulically, engine, or motors as desired. The ability to run the pump in either direction is especially useful where the same pump is used to fill and drain the same tank or pit.
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