Heated roll, such as a godet, in drawing units, for example
AssigneeVepa AG
InventorHans Fleissner
Life of this patent
Estimating the term…
Abstract
A heated roll for effecting heat treatment of materials has an outer cylindrical shell, an inner cylindrical shell spaced from the outer cylindrical shell, a wall defining an annular space between the shells, partitions in the annular space for forming flow channels for the heating medium passing through the inner space, feed means for introducing a heating medium into the annular space and a discharge means for discharging the heating medium from the annular space and from the roll. The discharge means includes a centrally located backflow conduit and defines a single stationary discharge opening arranged in the roll below the roll axis for discharging heating medium selectively from the lower portion of the roll to the centrally located backflow conduit.
Claims40
A heated roll for the heat treatment of materials during rotation about its axis, which comprises an outer cylindrical shell, an inner cylindrical shell, said inner shell being spaced from the outer shell, wall means defining an annular space between said shells, partition means in said annular space for forming flow channels for a heating medium passing through said annular space, feed means for introducing the heating medium into said annular space and discharge means for discharging the heating medium from said annular space and from said roll, said discharge means comprising a centrally located backflow conduit means and defining a single stationary discharge opening arranged in said roll below said roll axis for discharging heating medium selectively from a lower portion of said roll to said centrally located backflow conduit means.
A roll according to claim 16, wherein the annular space has an outer diameter in the zone of the discharge conduits that is larger than the diameter in a zone subjacent to the remaining peripheral surface of the roll.
Dependencies are inferred from the claim text.