Industrial with rubber coated lobes
When the flow rate needs to be high and the available foot print is limited, use rubber coated rotary lobe pumps. Operating principle The operating principle of a rotary lobe pump is based on the accurate movement of its rotors, which in turn depends on the perfectly regulated synchronisation of a corresponding set of high precision gears. The result is a positive-displacement volumetric pump with exceptional performance, which likewise allows the use of either rubberised or metallic lobe rotors, depending on the application concerned. The design offers you a pump of compact dimensions that are well out of proportion to its displacement flow volume, along with an ease of maintenance that really stands out with respect to other pump technologies. High-precision gears guatantee syncronised rotary movement without timing, while keeping running noise to a minimum. Industrial-grade mechanical seals. Robust design and top-quality materials guarantee an optimum shaft seal. Cost-effective, easy-to-replace wear plates contribute to a perfect maintenance routine. Main features & benefits: Large flow range (from 5 to 1 ) Compact dimensions - needs less installation footprint compared to conventional pump types Wear-resistant due to exclusive, high performance lobe rotor design (rubber coated or metallic) and due to dual reversible wear plates. Low maintenance cost and less shut down time - wear parts can be replaced without dismantling the piping system Dry self- priming due to high suction capabilities Dry run capability for a period of time (dry run detection device available and recommended) High suction capabilities great for suction lift applications Lower power consumption compared to other pump types Reversible flow - good for example for membrane filtration and when used as a mobile pump unit Volumetric pump with controlled flow - hence no need for flow meter Continuous flow (pulse-free) - hence no need for pulsation dampeners Low shear rate - ideal for delicate fluids and foaming products Large solids pass - good for liquids containing particles (5 mm) Able to pump highly viscous products Multiple connection configurations for a variety of installations Available in stainless or special-grade steel The intermediate chamber eliminates all possibility of cross-contamination between the lubricating oil in the gearbox and the media being pumped. Rubber re-coating possible High-performance, highly efficient lobe rotors developed in cooperation with the Polytechnic University of Catalonia. - 2 - - 3 -
1 4 6 146 146 1 1 196 196 349 349 35 h6 4 h6 35 h6 4 6 Lobe pumps LB-S/ LB-S/9 Lobe pumps LB-S/9 LB-M/ Lobe pumps LB-M/ LB-M/125 Lobe pumps LB-M/125 324 42 344 422 451 363 476 388 13 Ø13 2 3 195 2 2 3 195 2 34 3 29 21.5 3 Technical data LB-S/ LB-S/9 Capacity,91 l/rev 1,17 l/rev Operating pressure < bar <6 bar Rubber coated rotors NBR, EPDM, FKM NBR, EPDM, FKM Metallic rotors available AISI-316, AISI-4 AISI-316, AISI-4 Pump-body material AISI-316, AISI-4 AISI-316, AISI-4 Mechanical seals Carb. Silicon / Carb. Tungsten, Graphite/Carb. Tungsten Carb. Silicon / Carb. Tungsten, Graphite/Carb. Tungsten Standards connections DIN DN-65 flanges DIN DN- flanges Other connections available: DIN 11851 NW, Tri-clamp, SMS, Fast adapters, ANSI flanges, etc. DIN 11851 NW, Tri-clamp, SMS, Fast adapters, ANSI flanges, etc. Technical data LB-M/ LB-M/125 Capacity 2,79 l/rev 3,49 l/rev Operating pressure <8 bar <4 bar Rubber coated rotors NBR, EPDM, FKM NBR, EPDM, FKM LB-M/125 Metallic rotors available AISI-316, AISI-4 AISI-316, AISI-4 Pump-body material AISI-316, AISI-4 AISI-316, AISI-4 Mechanical seals Carb. Silicon / Carb. Tungsten, Graphite/Carb. Tungsten Carb. Silicon / Carb. Tungsten, Graphite/Carb. Tungsten 476 Standards connections388 DIN DN- flanges DIN DN-125 flanges Other connections available: DIN 11851 NW, Tri-clamp, SMS, Fast adapters, ANSI flanges, etc. DIN 11851 NW, Tri-clamp, SMS, Fast adapters, ANSI flanges, etc. 35 25 5 Performance curve LB-S/ 4 5 6 Performance curve LB-S/9 45 4 35 25 5 4 5 6 9 6 5 4 21.5 Performance curve LB-M/ 3 4 5 6 1 1 1 9 6 5 4 Performance curve LB-M/125 4 5 6-4 - - 5 -
Waste water treatment Membrane filtration Thickened sludge Centrifuge separation feeding Lime milk transfer Flotation sludge transfer Filter press feeding Digesters sludge transfers Clarifiers sludge transfers Marine spills Polluted water Grey waters Chemical Industry Detergents Oils Surfactants Plasters Paints Bitumen Slime (bio-diesel production) Pesticides Emulsions Ceramic slip Glycerin Cement mud Fertilizers Disposal and recycling Waste oil transfer Polyethylene granulate Waste food transfer Solids separators Sugar Industry Concentrated sugar syrup Sugar solution Raw sugar Palm sugar syrup Lime milk Molasses Waste sludge Applications Assemblies Pulp and paper Industry Paper sludge Pulp Starch Glue Lime milk Bulking agent Coatings Marine and offshore Sea water with oil Oil sludge Black water Sea water with crude oil Ballast water (ship balance) Bilge water Oil and gas Tar Fuel and Oil Oil sludge Petrochemical products (heavy oil, light oil, petroleum, biodiesel) Mixture of water and oil Crude oil Drilling fluid Other applications Load and unload trucks Mobile flood pump Manure Biogas plant Bentonite Fiber cement Titandioxide suspension Pressure safety switch The fitting of a pressure safety switch to a volumetric pump of this type prevents the accidental accumulations of excess pressure in the pump and its connected system that are likely to result from incorrectly-shut valves, pipework blockage, etc. Excess pressure of this type, which can also cause a mechanical or electrical fault, likewise supposes a general risk forthe installation as a whole. The pressure safety switch is designed to shut down pump whenever it reaches a predetermined operating pressure. Available accessories Feed screw hopper The optional feed screw hopper is recommended (and also necessary) when pumping heterogeneous substances that normally contain a high quantities of suspended solid matter likely to form an obstructive mass, which then lacks the required fluidity - thereby making if difficult to ensure its entry into the pump. This option allows use to ensure that the pump is kept properly supplied in such cases, which in turn means that the substances concerned can be pumped in a reliable and efficient way. Safety By-Pass valve The by-pass valve is designed, along the same lines as the pressure-activated safety switch, to protect the pump in the event of excess pressure. Protection is provided mechanically in this case, by recirculation of the substance being pumped. The safety valve can be installed either on the front cover of the pump or between its inlet and discharge connections. Compact assembly with hydraulic motor Vertical assembly with hopper Flow detector The design of the pump is such that it can only run dry for a short time before the lack of substance being pumped reduces lubrication and increases the temperature, which could affect the proper functioning of certain pump components. The flow detector is an optional component designed to protect the pump from possible dry running due to a lack of pumped substances. It can also be used to automate the shutdown function at the end of a transfer or dosing operation. Trolley Standard assembly on a base plate Mechanical or electronic torque limiter Given that the device is a positive displacement volumetric pump, the ability to control its operating torque also allows us to prevent incidents caused by increases in pressure or mechanical blockage of the pump. Electronic and mechanical units are both available. The electronic version can also be used to prevent the pump from dry running. - 6 - - 7 -
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