Application
The Lobe pumps basically consist of two lobe rotors which rotate synchronously inside a casing without touching each other.
The two rotors divide the rotor chamber into to several smaller rooms and move in order as: Abcd. At position a, only room Iif filled with medium; At position b, some medium is closed in room B; At position C, some medium is also closed in room A, and at position d, room A and B are connected with room II; Here the medium is delivered to the outlet. With this circulation, the medium (material) is delivered through the pump continuously.
As the rotors rotate, the spaces between the lobes and the casing are successively filled with fluid, which is transported to the discharge nozzle with a fixed amount of displacement. The pumped fluid forms a continuous stream thanks to the tolerances between the lobes and the pump casing, thus ensuring an efficient pumping.
Materials
- Parts in contact with the product AISI
- 316L or 304
- Gaskets EPDM
- Mechanical seal graphite/Sic/EPDM
- SiC/C/EPDM
- Internal surface finish Ra ≤ 0.4 µ M
- External surface finish bright polish
Options
- Mechanical seals: SiC/SiC or TuC/SiC.
- Cooled mechanical seal, pressurised
- Double mechanical seal, lip seal or Oring seal.
- Gaskets in EPDM or PTFE.
- Heating chamber (Jacket).
- Isolation can.
- Vertical support.
- Rectangular nozzle.
- Various kinds of drives and protections (gearbox drive with optional frequency converter.
- Pulley/mechanical drive speed selector).
- Trolley and/or control panel.
- Connections: Clamp, SMS, RJT, etc
Sanitary rotary lobe pump
