CMC - Screw Conveyors for Fresh Concrete

Project Description

Description - The CMC Screw Conveyors are manufactured from carbon steel with a suitable surface finishing. They are made up from a U-shape trough with a wear-resistant rubber drop bottom. CMC has an outlet spout at one trough end, an end plate at each trough end, helicoid screw flighting welded on a centre pipe with a coupling bush at each end, two end bearing assemblies complete with shaft sealing unit, and a bolted trough cover. Furthermore, CMC Screw Conveyors are equipped with a gear motor that suits the application. The inlet zone is equipped with adjustable mixing paddles.

Function - CMC Screw Conveyors are used in the precast concrete industry to convey fresh concrete from the compulsory mixer to the moulds as an alternative to belt conveyors that, unlike screw conveyors, bear the risk of segregation of the concrete. To keep the concrete homogeneous and to reduce the absorbed drive power the mixing paddles in the inlet zone are adjustable. By changing the angle of the paddles the concrete throughput rate can be altered. Due to the rubber drop bottom trough large aggregate particles that end up between screw and trough will not block the unit as the rubber will let them pass. The drop bottom can be quickly opened and closed for cleaning and easily replaced when worn out.

Performance & Technical Features - Benefits

  • Powder-coated
  • Solid upper trough channels with bolted cover
  • Drop bottom trough in wear-resistant rubber
  • Outlet spout with flange drilling according to standard.
  • No inlet supplied
  • Extra-heavy-duty screw conveyor with adjustable mixing paddles in inlet zone and full blade helicoid flighting welded on centre pipe in conveying zone.
  • Flanged external end bearing assemblies with cast iron casing and incorporated shaft sealing units with manually adjustable stuffing boxes.
  • Direct or offset drive unit
  • Small footprint
  • Easy to fit and to maintain
  • Possibility of swing application
  • Avoids segregation of the concrete and guarantees even and continual discharge
  • Substitutes wheel barrows or belt conveyors
  • Favourable price-quality ratio
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