Transportation device
AssigneeSpirac Engineering AB
InventorRichard Bruke
Life of this patent
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Abstract
A conveying apparatus comprises a first conveyor combination including a horizontal casing and a horizontal shaftless spiral drive element, and a second conveyor combination including a vertical casing and a vertical shaftless spiral drive element. The discharge section of the first casing and the free end of the first driving element are directed from the side towards the center axis of the second casing. The casing of the second conveyor combination has a cross section having either a corner or a longitudinally extending rib to increase the friction between the casing and the material which abuts against the same.
Claims22
Apparatus for conveying particulate material from a lower level to a higher level comprising a first conveyor combination including a casing and a spiral drive element arranged rotatably in said casing, a second conveyor combination coupled to said first conveyor combination and including a casing inclined upwardly with respect to the casing of said first conveyor combination and a shaftless spiral drive element comprising a spiral screwblade arranged rotatably in said casing, said casing of the first conveyor combination having a discharge opening located axially of the first casing, said second casing having a boundary wall provided with a feed opening communicating with the discharge opening of the first casing, said spiral drive element of the first conveyor combination having a terminal end closely adjoining a region through which said screw blade of said shaftless spiral drive element of the second conveyor combination passes when said spiral drive element rotates, said casing of the second conveyor combination including a portion having a cross-section defining a corner.
Apparatus for conveying particulate material from a lower level to a higher level comprising a first conveyor combination including a casing and a spiral drive element arranged rotatably in said casing, a second conveyor combination coupled to said first conveyor combination and including a casing inclined upwardly with respect to the casing of said first conveyor combination and a shaftless spiral drive element comprising a spiral screwblade arranged rotatably in said casing, said casing of the first conveyor combination having a discharge opening located axially of the first casing, said second casing having a boundary wall provided with a feed opening communicating with the discharge opening of the first casing, said spiral drive element of the first conveyor combination having a terminal end closely adjoining a region through which said screw blade of said shaftless spiral drive element of the second conveyor combination passes when said spiral drive element rotates, said casing of the second conveyor combination including a portion having a cross-section with a substantially longitudinally extending internal rib.
Dependencies are inferred from the claim text.