Barking drum and method of heating same
AssigneeKone Corporation
InventorsKeijo Alander, Pekka Kokko, Tuomas Pontela
Life of this patent
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Abstract
For supplying pressurized steam into a rotating barking drum during the barking of tree trunks in order to thaw and warm the bark, steam is supplied into the barking drum from the periphery of the drum in a substantially radial direction through a distribution ring on the periphery of the drum and a stationary member in sliding contact with the ring.
Claims9
A method of supplying pressurized steam or the equivalent into a rotating barking drum for barking tree trunks in order to thaw and warm the bark, including the step of feeding the steam longitudinally of the periphery of said drum and discharging the steam from the periphery of said drum in a substantially radial direction into said drum at locations spaced apart along a substantial portion of the length of said drum.
A rotary barking drum comprising, secured to the periphery of said drum, at least one annular distribution ring, which is narrow in the axial direction of said drum, at least one substantially stationary means provided on the outside of said distribution ring and in sliding contact therewith or at least close thereto for supplying pressurized steam to said distribution ring, and means defining a plurality of distribution passages communicating with said annular distribution ring and extending longitudinally of said drum for discharging the steam radially into the interior of said drum at locations distributed along a substantial portion of the length of said drum.
Dependencies are inferred from the claim text.