Features Eccentric screw pumps
Bellin eccentric screw pumps have been designed for easy, low maintenance:wear parts can easily be replaced on the site. Eccentric screw pumps are heavy duty pumps and they can be used to pump abrasives sludges, viscous products, oils, emulsions etc. Due to the steady non turbulent flow they can also handle shear sensitive products and medium with solids content without breaking up the solids.
Eccentric screw pumps parts
a) drive shaft e) transmission shaft
b) bearings f ) rotor
c) gland packing seal g) rubber stator
d) pump housing h) pump outlet
Bellin eccentric screw pumps: identification code

Advantages of using Bellin eccentric screw pumps

- self priming up to 7-8 mt:
- low speed and so longer pump life (200-500 r.p.m. in comparison to 1400-2800 r.p.m of the centrifugal pumps);
- suitable to transfer abrasive and higly viscous products;
- high abrasion resistance;
- total absence of valves in the pump;
- minimum maintenance ;
- low noisy;
- capacity up to 200 mc/h;
- pressure up to 30 bar;
- direct relationship between conveying capacity and speed makes the Bellin pumps suitable for dosing purposes.

EXECUTION-MATERIALS
Bellin eccentric screw pumps can be manufactured with different materials.

PUMP CASING:

  • grey cast iron GG 25
  • stainless steel AISI 304 (1.4301)
  • stainless steel AISI 316 (1.4401)
 STATOR:
  • Perbunan/NBR rubber
  • Dutral/EPDM rubber
  • Hypalon/CSM rubber
  • FPM rubber
  • available also in white colour for food process
ROTOR:
  • hard chromed carbon steel
  • stainless steel AISI 304 (1.4301)
  • stainless steel AISI 316 (1.4401)
 TRANSMISSION PARTS-JOINT CONNECTIONS:
  • constant velocity shaft type
  • pins/cross joints
  • cardanic cross joint with joint sleeve with holding bands
SHAFT SEALS:
  • stuffing box standard construction
  • stuffing box with flushing ring
  • single mechanical seal (hard steel/graphite - tungsten carbide)
  • double mechanical seals
 CONNECTIONS:
  • flange according to DIN
  • gas threaded connections
  • DIN connections 11851
  • oenological connections
    type garolla - macon etc.
BELLIN S.p.A. 36040 ORGIANO (VICENZA) - ITALIA - Via Carbon,8 - tel. 0444-874900 r.a. - fax 0444-874742 - E-mail: info@bellinpompe.com