TopLobe Series. Rotary lobe pumps

TopLobe Series. Rotary lobe pumps

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TopLobe (TL) series pumps are rotary lobe pumps with a special design that overcomes the compromises and limitations associated with the application and use of conventional rotary lobe pumps. TopLobe series pumps are characterized by a robust yet simple design with a high degree of hygiene.

They are designed for quick and uncomplicated operation and thorough cleaning – both manual and CIP/SIP. They are adapted to many types of connections – threaded, clamped or flanged, can be mounted horizontally or vertically, allow for gentle pumping of the medium with low pulsation, even if it is viscous or contains solid particles. A wide selection of shaft seals with easy access for servicing shortens downtime. TopLobe pumps are also available in ATEX explosion-proof versions.

TopLobe (TL) series pumps are rotary lobe pumps with a special design that overcomes the compromises and limitations associated with the application and use of conventional rotary lobe pumps. TopLobe series pumps are characterized by a robust yet simple design with a high degree of hygiene.

They are designed for quick and uncomplicated operation and thorough cleaning – both manual and CIP/SIP. They are adapted to many types of connections – threaded, clamped or flanged, can be mounted horizontally or vertically, allow for gentle pumping of the medium with low pulsation, even if it is viscous or contains solid particles. A wide selection of shaft seals with easy access for servicing shortens downtime. TopLobe pumps are also available in ATEX explosion-proof versions.

Technical data
Pump capacity: 125.9 m3/h
3.497 l/rev
Max. rotational speed: 1450 rpm
Max. discharge pressure: 22 bar
Max size of solids: 3-15 mm
particle sizes depend on the pump model
Temperature: 70 °C
Impeller type: three-vane made of Duplex stainless steel AISI 329L
Working chamber material: 316L stainless steel
Elastomer materials: FPM (also with FDA approval), EPDM (also with FDA approval), PTFE jacketed O-rings, Chemraz®, Kalrez®
Seal types: single mechanical: SiC/SiC, with or without flushing
double mechanical: SiC/SiC
lip seal with or without flushing
single O-ring type
double O-ring type with flushing
Connection types: threaded connections: DIN, SMS, DS, BS, ISO, gas thread, NPT thread
clamped connections: ISO, SMS, DIN,
flanged connections: DIN (PN16, PN25) and ANSI (class 150, class 300)
Dimensions
Model Displacement
Liter/Rev
Nominal Connection
Size
Differential Pressure Rating
Bar
Maximum Pump Speed
RPM
TL1/0039 0.039 25 22 1450
TL1/0100 0.100 25 12 950
TL1/0139 0.139 40 7 950
TL2/0074 0.074 25 22 1450
TL2/0234 0.234 40 12 950
TL2/0301 0.301 50 7 950
TL3/0234 0.234 40 22 1200
TL3/0677 0.667 50 12 720
TL3/0953 0.953 80 7 720
TL4/0535 0.535 50 22 950
TL4/2316 2.316 100 12 600
TL4/3497 3.497 150 7 600
Typical applications
Industry Application Example
Food Processing Hygienic design combined with gentle product transfer is most suitable for liquids of varying viscosities. The TopLobe series can handle delicate fluids containing both soft and hard particles with minimal mixing or shearing.
Fine Chemicals The demands in fine chemical processing are becoming as stringent as in food and pharmaceutical processing. TopLobe is the ideal pump, featuring gentle product handling, high efficiency and CIP capability.
Pharmaceutical TopLobe offers the pharmaceutical industry many benefits through the use of low-emission construction materials combined with hygienic design, gentle product transfer and extremely precise dosing.
Chemical and Paper Industry The TopLobe pump has been designed and developed in accordance with current requirements for high product quality, reliability and service. It offers advanced capabilities in handling aggressive chemicals, slurries or pastes.
Product features
  • Simple and robust design – high hygiene, minimal risk of product entrapment, short downtime during cleaning.
  • Gentle product handling – the three-lobe design ensures gentle and stable product transfer, low pulsation and the ability to handle solid particles.
  • 12 sizes – a range of models with a maximum capacity of up to 125 m3/h and pressure of 22 bar, allowing the pump to be adapted to specific customer requirements.
  • Horizontal (standard) and vertical mounting options – equipped with special feet adapted for vertical or horizontal mounting.
  • Easy maintenance – simplified servicing and maintenance, simple gearbox design with long service life.
  • Wide choice of connections – threaded, clamped and flanged connections.
  • Wide selection of shaft seals – easy replacement with other types of seals, short downtime.
  • CIP/SIP capable – design enabling cleaning and sterilization in place, as well as manual cleaning.
  • Designed for use in potentially explosive atmospheres – compliant with ATEX Directive, category II 2G.
Operation principle

The operating principle of a lobe pump is based on displacing a specific dose of liquid from the suction area to the discharge area by rotating the working elements (lobes). The lobes are mounted on shafts, which are supported by bearings in an external synchronizer. Shafts equipped with gears, located inside the synchronizer, transfer the drive from the drive shaft to the intermediate shaft. The lobes are synchronized so that they do not touch each other during operation.

As the lobes rotate, they increase the volume of the space between the teeth, causing a pressure drop on the suction port side (Fig. 1). This causes liquid to flow into the pump housing. The pumped liquid is transported inside the housing (Fig. 2 and Fig. 3) to the discharge side of the pump (Fig. 4). When the volume of the inter-lobe space decreases, it causes a pressure increase on the discharge port side, and consequently, the liquid is pushed out of the pump housing.

Construction

SPX TopLobe rotary lobe pump design.

1. Working chamber body

  • simple and solid construction
  • smooth surfaces
  • high hygiene
  • minimal risk of product entrapment
  • easy cleaning in CIP, SIP or manually

2. Connections

  • wide selection
  • welded, maximally enlarged inlet
  • few limitations in applications
  • high hygiene
  • handling of high-viscosity media
  • reduced requirements for net positive suction head (NPSHr)

3. Three-lobe rotary pump

  • gentle and hygienic product transfer – no risk of product entrapment
  • passes relatively large solid particles
  • quick and easy rotor clearance adjustment
  • single-point compensation
  • sealing by means of O-rings
  • mounting from only one side of the device
  • easy disassembly and assembly, simplified maintenance

4. Front Cover

  • high hygiene and easy cleaning

5. Conical Locking Screw

  • reliable protection
  • high hygiene
  • safe sealing
  • no contact with metal surfaces

6. Seal cover

  • front-mounted product seals mounted directly behind the seal cover
  • quick and easy access to seals
  • high hygiene
  • easy service and maintenance
  • short downtime for maintenance and cleaning
  • interchangeability with other seal types

Flushing cover

  • one cover type for all mechanical seal types (with barrier fluid and flushing)
  • versatility

7. Special pump foot

  • allows for maximum installation flexibility
  • designed for horizontal or vertical mounting
  • minimizes restrictions on the use of valves and bends on pipelines

8. Helical gears

  • Ringfeder type security
  • maintaining the clearance and phase of the pump head, low noise level
  • easy service and maintenance

Maximum bearing sizes

  • installation without the use of adjusting washers
  • ability to achieve high rotational speeds
  • good lubrication of both bearings and gears

9. Pump shaft

  • spline shaft
  • O-ring seal
  • one-sided mounting
  • reliable torque transmission
  • high hygiene
  • easy to service
  • easy cam removal

Shaft sealing bush

  • extended shaft life
  • quick and easy access to seals
  • interchangeability with other seal types
  • „dry” shaft

Shaft seal

  • large selection of universal seals
  • interchangeability with other seal types
  • easy access for inspection and service
  • short downtime
  • high hygiene
  • simplified operation and access from the front of the pump

10. Durable and simple synchronizer

  • no locating washers
  • oil lubrication
  • minimal shaft deflection
  • exceptional ease of operation
  • ability to work in extreme outdoor conditions
  • extended service life

Synchronizer cover sealed with O-rings

  • simple installation and precise positioning of bearings mounted from the rear of the pump
  • quick access to the synchronizer for easy service and maintenance
Options and accessories

Heating mantle with lubricating oil.

Tank for flushing the seal.

Wear-resistant tungsten coating.

Built-in overflow valves.

  • Technical data

  • Dimensions

  • Typical applications

  • Product features

  • Operation principle

  • Construction

  • Options and accessories

Pump capacity: 125.9 m3/h
3.497 l/rev
Max. rotational speed: 1450 rpm
Max. discharge pressure: 22 bar
Max size of solids: 3-15 mm
particle sizes depend on the pump model
Temperature: 70 °C
Impeller type: three-vane made of Duplex stainless steel AISI 329L
Working chamber material: 316L stainless steel
Elastomer materials: FPM (also with FDA approval), EPDM (also with FDA approval), PTFE jacketed O-rings, Chemraz®, Kalrez®
Seal types: single mechanical: SiC/SiC, with or without flushing
double mechanical: SiC/SiC
lip seal with or without flushing
single O-ring type
double O-ring type with flushing
Connection types: threaded connections: DIN, SMS, DS, BS, ISO, gas thread, NPT thread
clamped connections: ISO, SMS, DIN,
flanged connections: DIN (PN16, PN25) and ANSI (class 150, class 300)

Performance curves