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B ucket elevators

Basic types. B ucket elevators. Pitched bucket elevator. Continuous bucket elevator. Belt. Conveying material. Round steel chain. Chain. Central chain. Belt bucket elevators. B ucket elevators. Chain bucket elevators. Round steel chain. Central chain. B ucket elevators.

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B ucket elevators

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  1. Basic types Bucket elevators Pitched bucket elevator Continuous bucket elevator Belt Conveying material Round steel chain Chain Central chain

  2. Belt bucket elevators Bucket elevators

  3. Chain bucket elevators Round steel chain Central chain Bucket elevators

  4. Feeding methods Bucket elevators Scoop-feeded Fly-feeded

  5. Discharge methods Pitched Continuous Centrifugal discharge Perfect discharge Outside discharge Inside discharge Bucket elevators

  6. Discharge principle Bucket elevators Inner radius COG radius Outer radius Pole distance

  7. Capacity calculation Force calculation Bucket elevators Mass / meter Sum. resistant coeff. Mat. flow Speed

  8. Transported materials: material not sensitive to the crunching effect of the screw (ashes, chemicals, fertilizers, food products, meal, ores, paper pulp, salt, sand...) Screw conveyors Screw types

  9. Flow direction types Screw conveyors Material in the trough

  10. Construction Screw conveyors Section A-A Parts: 1 Trough 2 Screw 3 End bearing 4 Head bearing 5 Hanging bearing 6 Drive motor 7 Coupling 8 Gear 10 Feed opening 11 Discharge opening Pushed or pulled screw?

  11. Required power of a horizontal screw: Capacity of a horizontal screw: P = ρhIv(Lf±H) in W ρh= Bulk density Iv= Volumetric capacity L= Horizontal distance of start and end points H= Height difference of start and end points f= General resistance factor (0,3 – 4,4) Capacity in m3/h Diameter of the screw in m Screw pitch in m Speed of screw in 1/min Fill factor Screw conveyors φ=0,125 high-density, highly abrasive material φ=0,25 high-density, lightly abrasive material φ=0,32 low-density, lightly abrasive material φ=0,4-0,5 low-density, non-abrasive material k = factor for inclined screw inclination For ribbon screws: Max. allowed screw speed exists! k factor

  12. Vertical screws Minimal required speed of the screw At critical speed Screw conveyors Above critical speed

  13. Transported material: • different unit loads, such as: • boxes • paletts • long steel or wood material • component assemblies Type of roller elements: - Rollers - Wheels (skates) - Balls Roller conveyors Classification of roller conveyors: - Gravity roller conveyors - Manual roller conveyors - Powered roller conveyors

  14. - Gravity and manual roller conveyors Gravity and manual roller conveyors Fixed Expandable v vlimit Accumulation of the transported unit load t

  15. Individually-driven rollers Powered roller conveyors Belt straight modules only transport rollers tensioning rollers

  16. Powered roller conveyors Chain Round belt Lineshaft

  17. Pusher Accessories for horizontal diversion Chain transfer Sliding shoes Turntable Pop-up belt

  18. Elevator • rope • belts Accessories for vertical diversion non-continuous Paternoster continuous

  19. Vertical spiral conveyor Accessories for vertical diversion Paternoster with sorting function

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