TORNADO® Rotary Lobe Pumps
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TORNADO® Rotary Lobe Pumps The service-friendly rotary lobe pump, constructed according to the principle of “full service in place” Pumps & Syste

MAXIMUM SERVICE FRIENDLINESS MEETS HIGH PERFORMANCE NETZSCH TORNADO® self-priming, valveless, positive displacement pumps can be optimally customised to meet specific process and application requirements. They can be used for almost any media on intermittent, continuous or dosing applications. TORNADO® pumps are particularly service and maintenance friendly; all parts that come into contact with the media are directly accessible without dismantling the pipework or disconnecting the drive. Their advantages are small space requirements due to their compact design, high performance and...

Functioning principle The TORNADO® rotary lobe pump is a positive displacement pump. The pumping action is generated by the contra-rotation of two rotors within the pump chamber which are synchronised externally. The media enters the pump chamber through the inlet port and is carried around the chamber by the rotors to the outlet port where it is discharged. Characteristics Valve free construction Self priming Suitable for any kind of liquid including media containing gas, solids or fibrous matter Suitable for lubricating and non lubricating media Pumping media with high or low viscosity...

The TORNADO® T2 REVOLUTIONARY IN DESIGN AND CUSTOMER BENEFIT PROCESS OPTIMISATION COMPACTNESS OPERATIONAL SAFETY COST-EFFECTIVENESS EASE OF SERVICE MAINTENANCE-FREE 4

Environmental awareness “The best maintenance is no maintenance” “Full Service In Place instead of Maintenance In Place“ “Green is already our corporate colour” We have perfected the rotary lobe pump concept by incorporating the tried, tested and proven NETZSCH core competence in the design and manufacture of engineered rubber solutions for the TORNADO® T2. During the entire pumping cycle only elastomer and metal component surfaces interface within the pump; elastomer to elastomer component surface interfaces, which suffer from excess wear and generate heat, are completely eliminated....

Optimum choice of material YOUR APPLICATION IS THE DECISIVE FACTOR Tooth belt drive Casing liner Rotor case Bearing housing Seal Rotor TORNADO® T2 Rubber-Metal Pump Cover liner Front cover Rotor setting device Stability “The best maintenance is no maintenance” Click here for the 3D model: Plastic deformation and heat generation is reduced by maintaining a uniform elastomeric wall thickness within the pump chamber. Material sections, bearing selection and seal positioning combine to minimize the adverse effects on dimensional changes to pump head geometry due to temperature changes. The...

Tooth belt drive Rotor setting device Bearing housing Rotor case Front cover TORNADO® T.Sano® Smooth with completely smooth housing Click here for the 3D model: Process optimisation “Full Service In Place instead of Maintenance In Place” “Maximum reliability through design, material and range of mechanical seals” Servicing a rotary lobe pump has never been so easy and all without the need for any special tools. The rotors can be removed and replaced very easily and quickly because they are not bolted or keyed to the shafts within the pump head but fixed with quick-fit non media wetted taper...

Surprisingly simple THE OIL-FREE SYNCHRONISATION WITH A TOOTH BELT DRIVE Single tooth belt drive Functioning principle Operational safe and oil free Environmental awareness The drive motor transmits power via a double-sided tooth belt which both drives and synchronizes the pump shafts. If required, the drive can be used in conjunction with a frequency converter to achieve a specific flowrate or range of flowrates. “A new application of tried and tested drive technology” “TORNADO® T2 – the environment friendly pump” An accident causing a complete write-off is inconceivable with this pump. We...

Versatile combination – flexible installation – consistent pumping capacity Both single and double tooth belt drive arrangements are available providing a wide range of speed reduction ratios. If required a shaft extension for direct in line coupling to electric motor or diesel engine drive is available. Power take off (PTO) shaft extension for drive from truck or tractor; twin shaft extensions are available where reversible operation is required.

Optimum operation AND PROCESS RELIABILITY AND SAFETY From GSS1 to BSS2 No ingress of the media into the bearing housing in the event of seal failure Easy access to seal buffer/ quench and barrier/flush connections Visual indicator of seal performance ¹ GSS = Gearbox Security System ² BSS = Bearing Security System Design and position of mechanical seal: cartridge unit integral with rotor Uninterrupted and direct flow of media to and around seal faces Self draining, no dead areas No wear of shafts, since seals are designed as robust cartridges Easy assembly an

It‘s the combination that counts With the appropriate accessories, which are optionally available for the TORNADO T1 and T2 variants, you increase the operational reliability of your pump and thus help to avoid downtimes of your system. Dry running protector The dry running protection units (STP2A, STP2D) for use with the Tornado rotary lobe pumps operate by monitoring the temperature between rotor and rotor case during normal operation. Should the operating temperature rise over a predetermined set point due to an increase in friction caused by dry running the unit will shut down the pump,...

It‘s the combination that counts Pressurised flush for double mechanical seals A double mechanical seal must be used in conjunction with a system providing a pressurised flush or thermo-syphon system. The pressurised flush is required to lubricate the seals, cool the seals and seal area and flush contaminants from the seal chamber. The flush liquid should be compatible with the pumped media, lubricating and have a high specific heat capacity. The pressure of the flush should be 2 bar above the pressure acting on the inboard seal from the pump chamber and flow rate of the flush must also be...